uplink control channel resource allocation for transmit diversity

专利摘要:
UPLINK CONTROL CHANNEL RESOURCE ALLOCATION FOR TRANSMISSION DIVERSITY Systems and methods for resource allocation for an uplink control channel for a UE (110) using multiple transmit antennas (124) in a wireless communication network ( 100) are described. A plurality of orthogonal resources (108) for use by the UE (112) on the uplink control channel is selected. Control information is transmitted from the UE on the uplink control channel on the plurality of orthogonal resources with transmit diversity.
公开号:BR112012006997B1
申请号:R112012006997-7
申请日:2010-09-29
公开日:2021-05-18
发明作者:Xiliang Luo；Wanshi Chen；Peter Gaal；Juan Montojo；Jelena M. Damnjanovic
申请人:Qualcomm Incorporated；
IPC主号:

专利说明:

Cross Reference to Related Order
[0001] The present application claims the benefits of provisional US patent application No. 61/246,841 entitled "UPLINK CONTROL CHANNEL RESOURCE ALLOCATION FOR TRANSMIT DIVERSITY," filed September 29, 2009, which is incorporated herein by reference in its entirety. . Field of Invention
[0002] The present description relates generally to communication, and more specifically to uplink control channel resource allocation for transmit diversity across multiple transmit antennas in a wireless communication network. Description of Prior Art
[0003] The Long Term Evolution (LTE) of the 3rd Generation Partnership Project (3GPP) represents an important advance in cell technology and is the next step towards cellular 3G services as a natural evolution of the Global system for mobile communications ( GSM) and Universal Mobile Telecommunications System (UMTS). LTE provides an uplink speed of up to 50 megabits per second (Mbps) and a downlink speed of up to 100 Mbps and has many technical benefits for cellular networks. LTE is designed to meet the carrier's needs for high-speed data and media transport and high-capacity voice support within the next decade. Bandwidth is scalable from 1.25 MHz to 20 MHz. This matches the needs of different network operators that have different bandwidth allocations, and also allows operators to provide different services based on spectrum. LTE is also expected to improve spectral efficiency in 3G networks, allowing carriers to provide more data and voice services over a given bandwidth. LTE encompasses high-speed data, multimedia broadcast and multimedia unicast services.
[0004] The LTE physical layer (PHY) is a highly efficient means of carrying both data and control information between an enhanced base station (eNodeB) and the mobile user equipment (UE). PHY LTE employs some advanced technologies that are new to cellular applications. These include Orthogonal Frequency Division Multiplexing (OFDM), and Multiple Input and Multiple Output (MIMO) data transmission. Additionally, PHY LTE uses Orthogonal Frequency Division Multiple Access (OFDMA) on downlink (DL) and Single Carrier Frequency Division Multiple Access (SC-FDMA) on uplink (UL). OFDMA allows data to be directed to and from multiple subcarrier users per subcarrier for a specified number of symbol periods.
[0005] Recently, Advanced LTE is an evolving mobile communication standard for providing 4G services. Being defined as a 3G technology, LTE does not meet the requirements for 4G also called Advanced IMT as defined by the International Telecommunication Union such as peak data rates of up to 1 Gbit/s. In addition to peak data rate, Advanced LTE also aims for faster switching between power states and improved performance at the cell edge.
[0006] Transmission on the Physical Uplink Control Channel (PUCCH) in the current LTE (Rel-8) uses a resource. To achieve transmission diversity, multiple resources are needed for PUCCH. Invention Summary
[0007] A simplified summary is presented below in order to provide a basic understanding of some aspects of the aspects described. This summary is not an extensive overview and is not intended to identify key or critical elements or delineate the scope of such aspects. Its purpose is to present some concepts of the features described in a simplified way as an introduction to the more detailed description that will be presented later.
[0008] According to one or more aspects and corresponding description thereof, various aspects are described with respect to the allocation of multiple resources for use by a UE to send control information on an uplink control channel with diversity transmission of the control information.
[0009] In one aspect, a method is provided for resource allocation for an uplink control channel to a UE using multiple transmit antennas in a wireless communication network, the method comprising determining a plurality of orthogonal resources that the UE will use on the uplink control channel, optimizing resource scheduling for other user equipment based on the determined plurality of orthogonal resources, and receiving control information from the UE on the uplink control channel on the plurality of orthogonal resources with transmission diversity.
[0010] In another aspect, a wireless communication apparatus is provided for use in a wireless communication network, the apparatus supporting resource allocation for an uplink control channel for a UE using multiple transmit antennas, the apparatus comprising means for determining a plurality of orthogonal resources that the UE will use in the uplink control channel, means for optimizing the scheduling of resources for other user equipment based on the determined plurality of orthogonal resources, and means for receiving control information to from the UE on the uplink control channel on the plurality of orthogonal resources with transmit diversity.
[0011] In a further aspect, a computer program product is provided comprising a computer readable storage medium comprising instructions that cause a computer to: determine a plurality of orthogonal resources that a UE with multiple transmit antennas will use in a channel of uplink control channel, optimize the scheduling of resources for other user equipment based on the determined plurality of orthogonal resources, and receive the control information from the UE on the uplink control channel on the plurality of orthogonal resources with diversity of streaming.
[0012] In another aspect, a wireless communication apparatus is provided for use in a wireless communication network, the apparatus supporting resource allocation for an uplink control channel for a UE using multiple transmit antennas, the apparatus comprising a processor configured to determine a plurality of orthogonal resources that the UE will use on the uplink control channel, optimizing resource scheduling for other user equipment based on the determined plurality of orthogonal resources, and receiving control information from the UE on the channel of uplink control on the plurality of orthogonal resources with transmit diversity.
[0013] In another aspect, a method is provided for resource allocation for an uplink control channel to a UE using multiple transmit antennas in a wireless communication network, the method comprising selecting a plurality of orthogonal resources for use by the UE on the uplink control channel, and transmitting the control information on the uplink control channel on the plurality of orthogonal resources with transmit diversity.
[0014] In another aspect, a wireless communication apparatus is provided for use in a wireless communication network, the apparatus supporting resource allocation for an uplink control channel using multiple transmit antennas, the apparatus comprising means for selecting a plurality of orthogonal resources for use on the uplink control channel, and means for transmitting control information on the uplink control channel on the plurality of orthogonal resources with transmit diversity.
[0015] In a further aspect, a computer program product comprising a computer readable storage medium including instructions that cause the computer to: select a plurality of orthogonal resources for use by a UE with multiple transmit antennas on one channel. uplink control, and transmit the control information from the UE on the uplink control channel on the plurality of resources orthogonal with the transmission diversity.
[0016] In another aspect, a wireless communication apparatus is provided for use in a wireless communication network, the apparatus supporting resource allocation for an uplink control channel using multiple transmit antennas, the apparatus comprising a processor configured to select a plurality of orthogonal resources for use on the uplink control channel and transmitting control information on the uplink control channel on the plurality of orthogonal resources with transmit diversity.
[0017] To accomplish the above and related purposes, one or more aspects comprise the features hereinafter fully described and particularly highlighted in the claims. The following description and the accompanying drawings present in detail certain illustrative aspects and are indicative of some of the various ways in which the principles of aspects may be employed. Other advantages and novelty features will become apparent from the following detailed description when considered in conjunction with the drawings and features described must include all said features and their equivalents. Brief Description of Drawings
[0018] The characteristics, nature and advantages of the present description will become more apparent from the detailed description presented below when taken into consideration in conjunction with the drawings in which similar reference characters identify corresponding parts throughout all views and where:
[0019] Figure 1 illustrates a MIMO communication system that benefits from uplink transmission diversity;
[0020] Figure 2 is a diagram showing an illustrative structure 200 for a UL control channel;
[0021] Figure 3 is a diagram illustrating a wireless communication system configured to support a number of users;
[0022] Figure 4 is a diagram illustrating a wireless communication system comprising macro cells, femto cells and pico cells;
[0023] Figure 5 is a diagram illustrating a communication system where one or more femto nodes are developed within a networked environment;
[0024] Figure 6 is a diagram illustrating a coverage map where various tracking areas, targeting areas, or location areas are defined;
[0025] Figure 7 is a diagram illustrating a multiple access wireless communication system;
[0026] Figure 8 is a schematic diagram of a MIMO communication system;
[0027] Figure 9 is a diagram illustrating the ACK/NACK feedback by an LTE Rel-8 UE in FDD operation;
[0028] Fig. 10 is a diagram illustrating the ACK/NACK feedback by an LTE Rel-8 UE in TDD operation;
[0029] Figure 11a is a flowchart illustrating an illustrative process for a UL control channel resource allocation for Spatial Orthogonal Resource Transmission Diversity (SORTD) from an evolved Node B (eNB) perspective;
[0030] Figure 11b is a flowchart illustrating an illustrative process for a UL control channel resource allocation to SORTD from a UE perspective;
[0031] Fig. 12a is a diagram illustrating an illustrative resource scheduling scheme for ACK/NACK SORTD in a component DL single-carrier configuration in FDD operation;
[0032] Fig. 12b is a diagram illustrating another illustrative resource scheduling scheme for ACK/NACK SORTD in a single-carrier DL configuration of component in FDD;
[0033] Figure 13a is a flowchart illustrating an illustrative process for returning ACK/NACK SORTD for a single component DL carrier in FDD operation from an eNB perspective;
[0034] Fig. 13b is a flowchart illustrating an illustrative process for returning ACK/NACK SORTD for a single component DL carrier in FDD operation from a perspective of a UE;
[0035] Figure 14a is a flowchart illustrating an illustrative process for returning ACK/NACK SORTD for multiple DL component carriers in FDD operation from an eNB perspective;
[0036] Fig. 14b is a flowchart illustrating an illustrative process for returning ACK/NACK SORTD for multiple DL component carriers in FDD operation from a UE perspective;
[0037] Figure 15 is a diagram illustrating the ACK/NACK SORTD return for multiple DL component carriers in a one-to-one mapping configuration in FDD operation;
[0038] Figure 16a is a flowchart illustrating an illustrative process for returning ACK/NACK SORTD for multiple DL component carriers in a one-to-one mapping configuration in FDD operation from an eNB perspective;
[0039] Fig. 16b is a flowchart illustrating an illustrative process for returning ACK/NACK SORTD for multiple DL component carriers in a one-to-one mapping configuration in FDD operation from a UE perspective;
[0040] Fig. 17 is a diagram illustrating the return ACK, NACK SORTD for multiple DL component carriers in a many-to-one mapping configuration in FDD operation;
[0041] Figure 18a is a flowchart illustrating an illustrative process for returning ACK/NACK SORTD for multiple DL component carriers in a many-to-one mapping configuration in FDD operation from an eNB perspective;
[0042] Fig. 18b is a flowchart illustrating an illustrative process for returning ACK/NACK SORTD for multiple DL component carriers in a many-to-one mapping configuration in FDD operation from a UE perspective;
[0043] Figure 19 is a diagram illustrating the ACK/NACK SORTD feedback for multiple DL subframes in TDD operation;
[0044] Figure 20a is a flowchart illustrating an illustrative process for returning ACK/NACK SORTD for multiple DL subframes in TDD operation from an eNB perspective;
[0045] Fig. 20b is a flowchart illustrating an illustrative process for returning ACK/NACK SORTD for multiple DL subframes in TDD operation from a UE perspective;
[0046] Figure 21a is a flowchart illustrating an illustrative process for returning ACK/NACK SPS SORTD from an eNB perspective;
[0047] Fig. 21b is a flowchart illustrating an illustrative process for returning ACK/NACK SPS SORTD from a UE perspective;
[0048] Figure 22a is a diagram showing an UL carrier that includes a plurality of orthogonal resources configured for a scheduling request (SR);
[0049] Fig. 22b is a diagram showing an UL carrier that includes a plurality of orthogonal resources configured for simultaneous SR and ACK/NACK feedback;
[0050] Fig. 22c is a diagram showing an UL carrier that includes a plurality of orthogonal resources configured for SR where at least one of the plurality of orthogonal resources can be used for ACK/NACK feedback;
[0051] Figure 23a is a flowchart illustrating an illustrative process for returning CQI SORTD from an eNB perspective;
[0052] Figure 23b is a flowchart illustrating an illustrative process for returning CQI SORTD from a UE perspective. Detailed Description of the Invention
[0053] Various aspects are now described with reference to the drawings. In the following description, for the purpose of explanation, a number of specific details are presented in order to provide a deeper understanding of one or more aspects. It may be evident, however, that many aspects can be practiced without these specific details. In other cases, well-known structures and devices are illustrated in block diagram form in order to facilitate the description of these aspects.
[0054] In Fig. 1, the communication system 100 develops a node, shown as an evolved Base Node (eNB) 102 that responds to a scheduler 104 to transmit over downlink 106 a designation for UL 108 orthogonal resources that the UE 110 can use in an uplink 112 for transmit diversity. To that end, a transmitter (Tx) 114 and a receiver (Rx) 116 for the eNB 102 may utilize a plurality of antennas 118 for MIMO operation. Similarly, a Tx 120 and an Rx 122 for the UE 110 may use a plurality of antennas 124 for MIMO operation. In an illustrative aspect, a computing platform 126 of UE 110 uses the designation for resource allocation PUCCH in LTE-A 3GPP for transmit diversity.
[0055] A PUCCH is transmitted from the UE 110 to the eNB 102 on one or more UL 108 orthogonal resources on an UL control channel. Figure 2 is a diagram showing an illustrative structure 200 for a UL control channel. Structure 200 comprises an UL subframe 210 which is divided into a plurality of resource blocks (RBs) into subcarriers in the frequency domain and into 2 partitions (eg 211 and 222) in the time domain so that each RB (per example, 231) is placed in a partition. In the illustrated example, the UL subframe 210 is 1 ms long, and the RBs 220 range from RB1 to NULRB, where NULRB corresponds to a maximum number of RBs on the UL control channel. In an illustrative embodiment, each RB (eg 231) includes 12 subcarriers in the frequency domain. In some aspects, a single RB is positioned across 2 partitions (eg 211 and 222) in the time domain. In such aspects, the RB may or may not be positioned across 2 partitions within the same frequency subcarrier. For example, an RB can be mirror-skipped so that it occupies a subcarrier near the bottom of the frequency band in partition 1, and also occupies a subcarrier near the top of the frequency band in partition 2.
[0056] In some respects the teachings presented here can be employed in a network that includes macro-scale coverage (for example, a wide area cellular network such as 3G (Third Generation) networks, typically referred to as a macro cellular network) and a smaller scale coverage (for example, a home-based or building-based network environment). As an access terminal ("AT") moves through such a network, the access terminal can be serviced at certain locations by access nodes ("ANs") that provide macro coverage while the access terminal can be serviced in other locations by access nodes that provide coverage on a smaller scale. In some respects, smaller coverage nodes can be used to provide increased capacity growth, in-building coverage, and different services (eg for a more robust user experience). In the discussion presented here, a node that provides coverage across a relatively large area may be referred to as a macro node. A node that provides coverage across a relatively small area (eg, a residence) may be referred to as a femto node. A node that provides coverage across an area that is smaller than a macro area and larger than a femto area may be referred to as a peak node (eg, providing coverage within a commercial building).
[0057] A cell associated with a macro node, a femto node, or a pico node may be referred to as a macro cell, a femto cell, or a pico cell, respectively. In some implementations, each cell may be additionally associated with (for example, divided into) one or more sectors.
[0058] In many applications, other terminology can be used to refer to a macro node, a femto node, or a pico node. For example, a node macro can be configured or referred to as an access node, base station, access point, eNodeB, cell macro, and so on. In addition, a femto node can be configured or referred to as a home NodeB, home eNodeB, access point base station, femto cell, and so on.
[0059] Figure 3 illustrates a wireless communication system 300, configured to support multiple users, where the teachings presented here can be implemented. System 300 provides communication for multiple cells 302, such as, for example, macro cells 302a to 302g, with each cell being served by a corresponding access node 304 (e.g., access nodes 304a to 304g). As illustrated in Figure 3, access terminals 306 (e.g., access terminals 306a through 306l) can be distributed at various locations throughout the system over time. Each access terminal 306 can communicate with one or more access nodes 304 on a forward link ("FL") and/or a reverse link ("RL") at a given time, depending on whether the access terminal 306 is active and if it is in soft handoff, for example. Wireless communication system 300 can provide service across a large geographic region. For example, macro cells 302a to 302g can cover a few blocks in a neighborhood.
[0060] In the example illustrated in Figure 4, base stations 410a, 410b and 410c can be macro base stations for macro cells 402a, 402b, and 402c, respectively. The 410x base station can be a pico base station for a 402x pico cell communicating with the 420x terminal. Base station 410y can be a femto base station for a femto cell 402y communicating with terminal 420y. Although not illustrated in Figure 4 for reasons of simplicity, macro cells can overlap at the edges. Pico and femto cells may be located within macrocells (as illustrated in Figure 4) or may overlap macrocells and/or other cells.
[0061] Wireless network 400 may also include relay stations, for example a relay station 410z that communicates with terminal 420z. A relay station is a station that receives a transmission of data and/or other information from an upstream station and sends a transmission of data and/or other information to a downstream station. The upstream station can be a base station, another relay station, or a terminal. The downstream station can be a terminal, another relay station, or a base station. A relay station can also be a terminal that relays transmissions to other terminals. A relay station can transmit and/or receive low reuse preambles. For example, a relay station may transmit a low-reuse preamble similarly to a pico base station and may receive low-reuse preambles similarly to a terminal.
[0062] A network controller 430 can couple to a set of base stations and provide coordination and control for those base stations. Network controller 430 can be a single network entity or a collection of network entities. Network controller 430 can communicate with base stations 410 via a return access channel. The reverse access channel network communication 434 can facilitate point-to-point communication between base stations 410a through 410c employing such distributed architecture. Base stations 410a to 410c can also communicate with each other, for example, directly or indirectly via the wired or wireless backhaul channel.
[0063] Wireless network 400 can be a homogeneous network that includes only macro base stations (not shown in figure 4). Wireless network 400 can also be a heterogeneous network that includes base stations of different types, eg macro base stations, pico base stations, femto (domestic) base stations, relay stations, etc. These different types of base stations can have different transmit power levels, different coverage areas, and different impacts on interference on wireless network 400. For example, macro base stations can have a high transmit power level (for example , 20 Watts), whereas pico and femto base stations may have a low transmit power level (eg 9 Watts). The techniques described here can be used for homogeneous and heterogeneous networks.
[0064] The terminals 420 can be distributed throughout the wireless network 400, and each terminal can be stationary or mobile. A terminal can also be referred to as an access terminal (AT), a mobile station (MS), a user equipment (UE), a subscriber unit, a station, etc. A terminal can be a cell phone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless telephone, a wireless local circuit station (WLL ), etc. A terminal can communicate with a base station over both downlink and uplink. Downlink (or forward link) refers to the communication link from base station to terminal, and uplink (or reverse link) refers to communication link from terminal to base station.
[0065] A terminal may be able to communicate with macro base stations, pico base stations, femto base stations, and/or other types of base stations. In Figure 4, a solid line with double arrows indicates desired transmissions between a terminal and a serving base station, which is a base station designated to serve the terminal on downlink and/or uplink. A dashed line with double arrows indicates interfering transmissions between a terminal and the base station. An interfering base station is a base station causing interference at a downlink terminal and/or observing interference from the uplink terminal.
[0066] Wireless network 400 can support synchronous or asynchronous operation. For synchronized operation, base stations can have the same frame timing, and transmissions from different base stations can be time-aligned. For asynchronous operation, base stations may have different frame timing, and transmissions from different base stations may not be time-aligned. Asynchronous operation may be more common for pico and femto base stations, which may be internally developed and may not have access to a synchronization source such as the Global Positioning System (GPS).
[0067] In one aspect, to improve system capacity, the coverage area 402a, 402b and 402c, corresponding to a respective base station 410a to 410c can be divided into multiple smaller areas (for example, areas 404a, 404b and 404c). Each of the smaller areas 404a, 404b and 404c may be serviced by a respective base transceiver subsystem (BTS, not shown). As used herein and generally in the art, the term "sector" may refer to a BTS and/or its coverage area depending on the context in which the term is used. In one example, sectors 404a, 404b, 404c in a cell 402a, 402b, 402c can be formed by groups of antennas (not shown) at base station 410, where each group of antennas is responsible for communicating with terminals 420 in one part of cell 402a, 402b or 402c. For example, a base station 410 serving cell 402a may have a first group of antennas corresponding to sector 404a, a second group of antennas corresponding to sector 404b, and a third group of antennas corresponding to sector 404c. However, it should be appreciated that the various aspects described here can be used in a system having sectored and/or non-sectored cells. Additionally, it should be appreciated that all suitable wireless communication networks having any number of sectorized and/or non-sectorized cells must fall within the scope of the appended claims. For the sake of simplicity, the term "base station" as used here can refer to both a station serving a sector in addition to a station serving a cell. It should be appreciated that as used here, a downlink sector in a disjointed link situation is a neighboring sector. While the following description generally refers to a system in which each terminal communicates with a server access point for the sake of simplicity, it should be appreciated that the terminals can communicate with any number of server access points.
[0068] Figure 5 illustrates an illustrative communication system 500 in which one or more femto nodes are developed within a network environment. Specifically, system 500 includes multiple femto nodes 510 (eg, femto nodes 510a and 510b) installed in a relatively small-scale network environment (eg, user homes 530a and 530b). Each femto node 510 can be coupled to a wide area network 540 (eg, the Internet). Each femto node 510 can also be coupled to a 550 mobile operator core network through a 560 macro cell access or through a DSL router, cable modem, wireless link, or other connectivity device (not shown) . As will be discussed below, each femto node (eg, 510a, 510b) may be configured to service associated access terminals 520 (eg, access terminal 520a) and optionally, extraneous access terminals 520 (eg, access terminal 520b). In other words, access to femto nodes can be restricted where a certain access terminal (eg 520a) can be served by a set of designated femto nodes (eg domestic) (eg 510a), but they may not be served by any unassigned femto node (for example, a neighboring femto node 510b).
[0069] Figure 6 illustrates an example of a coverage map 600 where multiple tracking areas 602 (or targeting areas or location areas) are defined, each of which includes multiple macro coverage areas 604. coverage associated with tracking areas 602a, 602b, and 602c are delineated by broad lines and macro coverage areas 604 are represented by hexagons. Tracking areas 602 also include femto coverage areas 606. In this example, each of the femto coverage areas 606 (for example, femto coverage area 606c) is presented within a macro coverage area 604 (for example, the area macro coverage 604b). It should be appreciated, however, that a femto coverage area 606 may not lie entirely within a macro coverage area 604. In practice, a large number of femto coverage areas 606 can be defined with a given tracking area 602 or macro coverage area 604. In addition, one or more peak coverage areas (not shown) may be defined within a given tracking area 602 or macro coverage area 604.
[0070] Referring again to Figure 5, the owner of a femto node 510 may subscribe to mobile service, such as, for example, 3G mobile service, offered through a macro cellular network (e.g., mobile operator core network 550). Additionally, an access terminal 520 may be capable of operating both in macro environments and in smaller, smaller scale network environments (eg, residential). In other words, depending on the current location of the access terminal 520, a certain access terminal (eg 520c) may be served by an access node 560 of the macrocellular network 550, or, alternatively, a certain access terminal ( for example, 520a, or 520b) can be served by any one of a set of femto nodes 510 (for example, femto nodes 510a and 510b that reside within a corresponding user residence 530a and 530b). For example, when a subscriber is away from home, he is served by a standard macro access node (eg macro cell access 560) and when the subscriber is home, he is served by a femto node (eg. , node 510a). Here, it should be appreciated that a femto node 510 may be backward compatible with existing access terminals 520.
[0071] A femto node 510 can be developed on a single frequency or, alternatively, on multiple frequencies. Depending on the particular configuration, the single frequency or one or more out of multiple frequencies may overlap with one or more frequencies used by a macro node (eg macro cell access 560).
[0072] In some aspects, access terminal 520 may be configured to connect to a preferred femto node (eg, the home femto node of access terminal 520) whenever such connectivity is possible. For example, whenever access terminal 520 is within user's home 530 (eg, 530a, or 530b), it may be desirable for access terminal 520 (eg, 520a or 520b) to communicate only with the femto node. domestic 510 (eg 510a or 510b).
[0073] In some respects, if access terminal 520 operates within a macrocellular network 550, but is not residing in its most preferred network (for example, as defined in a preferred roaming list), access terminal 520 may continue to search for the most preferred network (eg, preferred femto node 510) using a New Best System Selection ("BSR"), which may involve a periodic scan of available systems to determine if the best systems are currently available, and subsequent efforts to associate with such preferred systems. With the acquisition register, the access terminal 520 can limit the search by specific band and channel. For example, the search for the most preferred system can be repeated periodically. Upon discovery of a preferred femto node 510, the access terminal 520 selects the femto node 510 on which to camp within its coverage area.
[0074] A femto node can be constrained in some respects. For example, a certain femto node may only provide certain services to certain access terminals. In developments with so-called restricted (or closed) association, a given access terminal can only be served by the macro cell mobile network and a defined set of femto nodes (for example, the femto nodes 510 that reside within the corresponding user's home 530). In some implementations, a node may be restricted from providing, for at least one node, at least one of: signaling, data access, registration, paging, or service.
[0075] In some aspects, a restricted femto node (which may also be referred to as a Closed Subscriber Group Domestic Node B) is one that provides service to a provided restricted set of access terminals. This set can be temporarily or permanently extended as needed. In some respects, a Closed Subscriber Group ("CSG") can be defined as the set of access nodes (eg femto nodes) that share a common access control list of access terminals. A channel on which all femto nodes (or all restricted femto nodes) in a region operate can be referred to as a femto channel.
[0076] Several relationships can, in this way, exist between a certain femto node and a certain access terminal. For example, from the perspective of an access terminal, an open femto node can refer to a femto node without any strict association. A restricted femto node can refer to a femto node that is restricted in some way (for example, restricted for membership and/or registration). A domestic femto node can refer to a femto node that the access terminal is authorized to access and operate on. A femto guest node can refer to a femto node that an access terminal is temporarily authorized to access or operate on. A strange femto node can refer to a femto node that the access terminal is not authorized to access or operate on, except perhaps in emergency situations (for example, 911 calls).
[0077] From a restricted femto node perspective, a home access terminal can refer to an access terminal that authorizes access to the restricted femto node. A guest access terminal can refer to an access terminal with temporary access to the restricted femto node. A foreign access terminal can refer to an access terminal that is not allowed to access the restricted femto node, except perhaps in emergency situations, for example, such as 911 calls (eg an access terminal that does not has the credentials or permission to register with the restricted femto node).
[0078] For convenience, the above discussion describes various features in the context of a femto node. It should be appreciated, however, that a peak node can provide the same or similar functionality for a larger coverage area. For example, a pico node can be restricted, a pico home node can be defined for a particular access terminal, and so on.
[0079] A wireless multiple access communication system can simultaneously support communication to multiple wireless access terminals. As mentioned above, each terminal can communicate with one or more base stations through forward and reverse link transmissions. The forward link (or downlink) refers to the communication link from the base stations to the terminals, and the reverse link (or uplink) refers to the communication link from the terminals to the base stations. This communication link may be established through a single-entry, single-exit system, a multiple-entry, multiple-exit ("MIMO") system, or some other type of system.
[0080] Referring to Fig. 7, a multiple access wireless communication system according to an aspect is illustrated. An access point (AP) 700 includes multiple antenna groups, one including 707 and 706, another including 708 and 710, and an additional one including 712 and 714. In Figure 7, only two antennas are illustrated for each antenna group, in However, more or less antennas can be used for each antenna group. The UE 716 is in communication with the antennas 712 and 714, where the antennas 712 and 714 transmit information to the UE 716 over the forward link 720 and receive information from the UE 716 over the reverse link 718. The UE 722 is in communication with the antennas 706 and 708, where antennas 706 and 708 transmit information to UE 722 over forward link 726 and receive information from UE 722 over reverse link 724. In an FDD system, communication links 718, 720, 724 and 726 they can use different frequencies for communication. For example, forward link 720 may use a different frequency than reverse link 718.
[0081] Each group of antennas and/or area in which they are designed to communicate is often referred to as an access point sector. In this regard, antenna groups are each assigned to communicate with access terminals in one sector of the areas covered by access point 700.
[0082] In communication over the forward links 720 and 726, the transmitting antennas of the access point 700 use beamforming in order to improve the signal-to-noise ratio of the forward links for different UEs 716 and 722. An access point using beamforming to transmit to UEs randomly spread across its coverage causes less interference to access terminals in neighboring cells than an access point transmitting through a single antenna to all of its access terminals.
[0083] An access point may be a fixed station used to communicate with terminals and may also be referred to as an access point, a Node B, or some other terminology. A UE may also be called an access terminal, a wireless communication device, terminal, or some other terminology.
[0084] A MIMO system employs multiple transmit antennas (NT) and multiple receive antennas (NR) for data transmission. A MIMO channel formed by NT transmitting antennas and NR receiving antennas can be decomposed into NS independent channels, which are also referred to as spatial channels, where NS < min {NT, NR} . Each of the independent NS channels corresponds to a dimension. The MIMO system can provide improved performance (eg, greater throughput and/or greater reliability) if the additional dimensions created by multiple transmit and receive antennas are used.
[0085] A MIMO system can support time division duplex ("TDD") and frequency division duplex ("FDD"). In a TDD system, forward and reverse link transmissions are in the same frequency region so that the principle of reciprocity allows estimation of the forward link channel from the reverse link channel. This allows the access point to extract the transmit beamforming gain on the forward link when multiple antennas are available at the access point.
[0086] The teachings presented here can be incorporated into a node (eg a device) employing various components to communicate with at least one other node. Figure 8 presents several illustrative components that can be used to facilitate communication between nodes. Specifically, Figure 8 illustrates a wireless device 810 (eg, an access point) and a wireless device 850 (eg, an access terminal) of a MIMO 800 system. In device 810, traffic data stops multiple data streams is provided from an 812 data source to the 814 TX data processor.
[0087] In some aspects, each data stream is transmitted through a respective transmit antenna. The TX data processor 814 formats, encodes and interleaves the traffic data for each data stream based on a particular encoding scheme selected for that data stream to provide encoded data.
[0088] The encoded data for each data sequence can be multiplexed with pilot data using OFDM techniques. Pilot data is typically a known data pattern that is processed in a known way and can be used in the receiving system to estimate the channel response. The multiplexed pilot and coded data for each data sequence is then modulated (ie, symbol-mapped) based on a particular modulation scheme (eg, BPSK, QSPK, M-PSK or M-QAM) selected for that data string to provide modulation symbols. The data rate, encoding and modulation for each data sequence can be determined by instructions performed by a processor 830. A data memory 832 can store program code, data, and other information used by the processor 830 or other components of device 810.
[0089] The modulation symbols for all data sequences are then provided to a MIMO TX 820 processor, which can further process the modulation symbols (eg OFDM). The MIMO TX processor 820 then provides NT modulation symbol sequences to NT transceivers ("XCVR") 822a to 822t which each have a transmitter (TMTR) and a receiver (RCVR). In some aspects, the MIMO TX processor 820 applies the beamforming weights to the symbols of the data streams and to the antenna from which the symbol is being transmitted.
[0090] Each transceiver 822a to 822t receives and processes a respective symbol sequence to provide one or more analog signals, and further conditions (e.g., amplifies, filters, and upconverts) the analog signals to provide a modulated signal suitable for transmission over of the MIMO channel. NT modulated signals from transceivers 822a to 822t are then transmitted from NT antennas 824a to 824t, respectively.
[0091] In device 850, the modulated transmitted signals are received by NR antennas 852a to 852r and the signal received from each antenna 852a to 852r is provided to a respective XCVR 854a to 854r. Each transceiver 854a to 854r conditions (e.g., filters, amplifies and downconverts) a respective received signal, digitizes the conditioned signal to provide samples, and further processes the samples to provide a corresponding "received" symbol sequence.
[0092] An RX data processor 860 then receives and processes the NR symbol sequences received from NR transceivers 854a to 854r based on a particular receiver processing technique to provide NT "detected" symbol sequences. RX data processor 860 then demodulates, deinterleaves, and decodes each detected symbol sequence to retrieve the traffic data for the data sequence. The processing by the RX 860 data processor is complementary to that performed by the MIMO TX 820 processor and the TX 814 data processor in the 810 device.
[0093] A processor 870 periodically determines which precoding matrix to use. Processor 870 formulates a reverse link message comprising an array index part and a rank value part. A data memory 872 can store program code, data, and other information used by processor 870 or other components of device 850.
[0094] The reverse link message can comprise various types of information regarding the communication link and/or received data sequence. The reverse link message is then processed by a TX data processor 838, which also receives traffic data for various data streams from a data source 836, modulated by modulator 880, conditioned by transceivers 854a to 854r, and transmitted back to the 810 device.
[0095] In device 810, the modulated signals from device 850 are received by antennas 824a to 824t, conditioned by transceivers 822a to 822t, demodulated by a demodulator ("DEMOD") 840, and processed by an RX 842 data processor to extract the reverse link message transmitted by device 850. Processor 830 then determines which precoding matrix to use to determine the beamforming weights then processes the extracted message.
[0096] Figure 8 also illustrates that the communication components may include one or more components that perform interference control operations. For example, an interference control ("INTER.") component 890 may cooperate with the processor 830 and/or the components of device 810 to send/receive signals to/from another device (e.g., device 850). Similarly, an interference control component 892 may cooperate with processor 870 and/or other components of device 850 to send/receive signals to/from another device (e.g., device 810). It should be appreciated that for each device 810 and 850 the functionality of two or more of the described components may be provided by a single component. For example, a single processing component can provide the functionality of the 890 interference control component and the 830 processor, and a single processing component can provide the functionality of the 892 interference control component and the 870 processor.
[0097] Currently, the UL Single Antenna Port Mode is defined in LTE Rel. 10. In this mode, the behavior of the UE is the same as the behavior of the UE with attached antenna from the perspective of the eNB. The exact implementation of UE was left to UE vendors (eg PA architecture). PUCCH, and/or PUSCH and/or SRS transmission can be independently configured for single uplink antenna port transmission, although detailed situations and operation have not been defined.
[0098] UL Single Antenna Port Mode is the default operating mode before the eNB is aware of the UE transmit antenna configuration. Broadcast diversity schemes employing multiple PUCCH resources are available for improved performance. In particular, SORTD is applied where the same d(0) modulated symbol is transmitted on different orthogonal resources from different antennas. Resource allocation has yet to be defined. The PUCCH 2/2a/2b format must also be resolved.
[0099] Multi-resource PUCCH for four transmit antennas (4Tx) can be achieved by applying 2Tx Transmit Diversity (TxD) via two virtual antennas with virtualization details being left as a UE implementation issue.
[00100] PUCCH can be divided into different formats. With respect to PUCCH modes in Rel-8, the following combinations of UL control information in PUCCH are supported: ACK/NACK with format 1a or 1b; ACK/NACK with format 1b with channel selection; SR with format 1; ACK/NACK + SR with format 1a or 1b; CQI with format 2; and CQI + ACK/NACK with format 2a or 2b for normal CP, format 2 for extended CP.
[00101] As indicated above with respect to Fig. 1, the PUCCH is an uplink access link from the UE 110 to an eNB 102. PUCCH can be used to transmit control information to the eNB 102 indicating an ACK/NACK , a CQI and/or MR. PUCCH can be observed, from a UE 110 point of view, as an RB comprising, for example, 12 subcarriers in a frequency domain and a partition in a time domain. I. Dynamic ACK/NACK Programming
[00102] In most cases, programming is fully dynamic. In the downlink direction, resources are assigned when data is available. For data to be sent in uplink, the UE dynamically requests transmission opportunities whenever the data arrives in the uplink store of the UE. Information about data being sent in the downlink direction and uplink transmission opportunities are carried on the radio layer control channel that is sent at the beginning of each subframe.
[00103] For PDSCH (Physical Downlink Shared Channel) transmission with corresponding PDCCH (Physical Downlink Control Channel) in subframe n-4: n(1)PUCCH=nCCE+N(1)PUCCH nCCE is the index from the first CCE (Control Channel Element) to the corresponding DCI (Downlink Control Information) designation N(1)PUCCH is a configured higher layer number
[00104] For PDSCH transmission without PDCCH in subframe n-4: The PUCCH resource index is configured by upper layers and informed by the value of "TPC command" in a semi-persistent scheduling (SPS) enable. A resource is mapped from n(1)PUCCH by applying an orthogonal sequence index and a cyclic shift.
[00105] A physical resource is determined by n(1)PUCCH by first determining m, which is the RB index for bandwidth used for PUCCH; and then from m, getting a physical RB index on an even partition and an odd partition.
[00106] Fig. 9 is a diagram 900 illustrating the ACK/NACK feedback by a LTE Rel-8 UE in FDD operation. Illustrated in diagram 900 is a DL subframe n-4 910 which includes a first CCE 911 and a second CCE 912 and a DL data channel (e.g., PDSCH) 915. In this way, a DL data transmission is made to from an eNB to a UE with data in data channel DL 915 together with DCI in first CCE 911 and a DCI in second CCE 912 in subframe DL n-4 910. In response, an ACK/NACK 949 corresponding to the data transmission DL 901 is sent from the UE to the eNB on a UL control channel (eg PUCCH). In this regard, the first CCE 911 carrying the DCI points (as illustrated by arrow 901) for the resource block (RB 941) and the corresponding orthogonal resource index in the UL subframe 940. In the example illustrated in figure 9, the RB 941 is mirror-skipped through two UL 940 subframe partitions.
[00107] In the LTE Rel-8 standard for TDD, two ACK/NACK modes are supported. In a first ACK/NACK mode, ACK/NACK messages are bundled into one resource in an UL 940 subframe, and in a second ACK/NACK mode, ACK/NACK messages are multiplexed into multiple resources in an UL 940 subframe. the UL-DL 5 configuration; DSUDDDDDDD, only the first ACK/NACK (bundling) mode is supported.
[00108] Figure 10 is a diagram illustrating the ACK/NACK feedback by a TDD UE LTE Rel-8 operation. A first DL data transmission is made from an eNB to a UE with data in a DL data channel (e.g., PDSCH) 1015 together with DCI in a first CCE 1011 and a second CCE 1012 in a first DL subframe 1010 Subsequently, a second DL data transmission is made from the eNB to the UE with the data on a DL data channel (eg PDSCH) 1025 together with a DCI on a first CCE 1021, a second CCE 1022 and a third CCE 1023 in a second DL subframe 1020. The CCEs programmed in DL subframes 1010 and 1020 are used to indicate (as illustrated by arrows 1001 and 1002) the resource blocks programmed in UL subframe 1040 to be used for PUCCH by the UE. For example, CCE 1011 corresponds to resource block RB1 1041 in UL subframe 1040, and CCE 1021 corresponds to resource block RB2 1042 in UL subframe 1040. In the example illustrated in Figure 10, resource blocks RB 1041 and RB 1042 are mirrored through two UL 1040 subframe partitions.
[00109] In the first ACK/NACK (bundling) mode in TDD REl. 8 LTE, ACK/NACK 1049 messages corresponding to DL 1 subframe and DL 2 subframe are bundled in a resource block (eg RB1 1041) and are transmitted from the UE to the eNB on a UL control channel ( for example, PUCCH) in the resource block. By way of example, ACK/NACK bundling can be performed by codeword through M DL subframes associated with a single UL subframe n by the AND operation.
[00110] In the second ACK/NACK (multiplexing) mode in TDD Rel. 8 LTE, a first part of ACK/NACK messages 1049 corresponding to the DL 1 subframe are transmitted from the UE to the eNB in a first resource block (by example, RB1 1041), and a second part of the ACK/NACK messages 1049 corresponding to the second DL 2 subframe is transmitted from the UE to the eNB in a second resource block (for example, RB2 1042). For example, if M>1, a spatial bundling is performed through multiple codewords in each DL subframe by the AND operation. PUCCH 1b format with channel selection can be used with ACK/NACK messages transmitted in 2 bits. If M=1, on the other hand, no spatial bundling is performed since only one DL subframe is associated with the single UL subframe.
[00111] The following are illustrative equations that can be used for PUCCH allocations under different ACK/NACK modes and/or different number (M) of subframes.
where m is an index of the smallest k_m in the set of K={k_0, k_1,...,k_M-1} so that UE detects PDCCH in subframe n-k_m, and n_CCE is the number of first CCE for that PDCCH. In this scheme, each CCE in each DL subframe in K is mapped to a different resource.
for each k_i so that a PDCCH is sent on the n-k_i.
[00112] In this scheme, since there are multiple resources that can be used for ACK return, a channel selection is used.
[00113] According to an embodiment of the invention, an eNB can configure UE LTE-A to transmit ACK/NACK in a single antenna port mode using a single resource or in a SORTD mode using multiple resources. In single antenna gate mode, similar to Rel-8 operation, the UE transmits ACK/NACK through a single orthogonal resource. Using a single antenna port mode is better than using a SORTD mode when there is a large amount of Antenna Gain Unbalance (AGI) between transmit antennas, for example.
[00114] In SORTD mode, depending on the actual situation and the upper layer configuration, the UE can employ multiple resources (to take advantage of the SORTD mode) or a single resource (such as a single antenna port mode) to return ACK/ NACK. In SORTD mode, if the UE determines that there are multiple PUCCH resources available for ACK/NACK feedback, the UE applies SORTD through two orthogonal PUCCH resources selected from the set of available resources. Otherwise, if the UE determines that multiple PUCCH resources are not available, the UE simply employs a single antenna gate mode for ACK/NACK transmission.
[00115] Figure 11a is a flowchart illustrating an illustrative process 1100a for a UL control channel resource allocation in a SORTD mode from an eNB perspective. To facilitate the illustration without any intention of limiting the scope of this description in any way, process 1100a will be described with reference to figure 1. In this mode for the SORTD mode, the eNB is considered to have already received control information from the UE 110 on a UL control channel which indicates that the UE 110 has multiple antennas 124, for example, for MIMO operation. For example, the eNB 102 may have already received such an indication from the UE 110 by the time the UE 110 enters the network or cell of the eNB 102. Process 1100a starts at initial state 1101a and proceeds to operation 1110a in which the eNB 102 determines, by a pre-established algorithm, a plurality of orthogonal resources that UE 110 will select for use by UE 110 on the UL control channel. In that regard, the UE 110 will be selecting the plurality of orthogonal resources according to the pre-established algorithm.
[00116] Process 1100a proceeds to operation 1120a in which the eNB 102 and/or the eNB 104 scheduler optimizes the scheduling of resources for use by all other UEs being served by the eNB 102, taking into account the determined plurality of orthogonal resources that UE 110 will select for use by UE 110 on the UL control channel.
[00117] Process 1100a proceeds to operation 1130a where eNB 102 receives control information from UE 110, such as ACK/NACK feedback or other control information, on the UL control channel in the selected plurality of orthogonal resources with diversity of transmission. Process 1100a ends in final state 1140a.
[00118] Fig. 11b is a flowchart illustrating an illustrative process 1100b for a UL control channel resource allocation in a SORTD mode from the perspective of a UE. For ease of illustration without any intention to limit the scope of the present description in any way, process 1100b will be described again with reference to Figure 1. Process 1100b starts at initial state 1101b and proceeds to operation 1110b where UE 110 selects, by a pre-established algorithm, a plurality of orthogonal resources that the UE 110 will use for the UL control channel. Process 1100b proceeds to operation 1120b where UE 110 transmits control information, such as ACK/NACK feedback or other control information, on the UL control channel on the selected plurality of orthogonal resources, with transmit diversity. Process 1100b ends in final state 1130b. II. SORTD to FDD: ACK/NACK
[00119] Several illustrative embodiments of UL control channel resource allocations for ACK/NACK SORTD return in FDD operation are now described. In FDD operation, DCI including resource allocation and other control information for a UE can be transmitted using one or more CCEs on a single component DL carrier or multicomponent DL carriers. The modalities corresponding to these alternative situations are described below. A. Single Component DL Carrier
[00120] In an FDD operation that uses a single component DL carrier when a corresponding DCI aggregation level is greater than 1 (multiple CCEs in each DL frame), the eNB 104 programmer (figure 1) does not need to perform an allocation of additional resource since multiple resources connected to CCEs in the DCI have been reserved and the SORTD can be applied through two of them.
[00121] When the aggregation level of the corresponding DCI is equal to 1 (one CCE in each DL frame), however, several possible approaches exist for scheduling resources for use by UE 110 on the UL control channel. In one approach, a single antenna gate mode is applied for ACK/NACK feedback when the UE is not at the cell edge and the single antenna gate mode is good enough since the UL signal quality of the UE 110 for the eNB 102 it is strong enough and does not require transmit diversity.
[00122] In another approach, a SORTD programming scheme illustrated by figure 12a is applied in which a predetermined algorithm is used whereby the eNB programmer ensures that a second resource 1223 connected with a Cce having an index of n_cce+X is not programmed for use by others to return ACK/NACK. Here, n_cce is the index of a first CCE to the corresponding DCI, the first CCE being connected to a first resource 1221, and X is an upper-layer configurable parameter (for example, a non-zero integer that can be positive or negative ). In the illustrated example in Figure 12a, the second resource is offset from the first resource by 3 (X=3). In this way, the UE can use the same predetermined algorithm to select a second resource for use on the UL control channel.
[00123] In another approach, a SORTD scheduling scheme related to cyclic shift as illustrated by Fig. 12b is applied where, when Δ_PUCCH_shift>1, a second resource can be selected by UE 110 for use by UE 110 in the UL control channel based on a position deviation of a first resource that is less than the cyclic shift separation of the programmed resources. By way of example, the eNB 102 sets a "closer-CS-usable" parameter to True, and then SORTD can be applied via a first resource (n_oc, n_cs) connected to n_cce and a second resource (n_oc, n_cs+Y ) which is the deviation of the first resource by Y, where Y is less than a cyclic shift separation (Δ_PUCCH_shift) between the resources for the UL control channel. An advantage of this scheme is that SORTD can be applied even when DCI contains only one CCE by resource utilization between cyclic change separation of resources that are programmed by the eNB for use by other UEs, for example. In this way, the UE can use the same predetermined algorithm to select a second resource for use on the UL control channel.
[00124] Fig. 13a is a flowchart illustrating an illustrative process 1300a for returning ACK/NACK SORTD for a single component carrier in FDD operation from an eNB perspective. For ease of illustration without any intention to limit the scope of the present description in any way, the process 1300a will be described with reference to Figure 1. In the SORTD mode, it is considered that the eNB has already received the control information from the UE 110 in an UL control channel which indicates that the UE 110 has multiple antennas 124, for example, for MIMO operation. For example, the eNB 102 may already have received such an indication from the UE 110 by the time the UE 110 enters the network or cell of the eNB 102. Process 1300a starts at the initial state 1301a and proceeds to operation 1310a where the eNB 102 determines, by a pre-established algorithm, a plurality of orthogonal resources that UE 110 will select for use by UE 110 on the UL control channel. In particular, eNB 102 determines that the UE 110 will select a first resource and a second resource, the second resource being offset from the first resource by the predetermined offset, as discussed above with respect to Fig. 12a. In that regard, the UE 110 will be selecting the plurality of orthogonal resources according to the pre-established algorithm.
[00125] In the illustrated example of Figure 12a, the predetermined offset is X, which can be any non-zero, positive or negative integer. In the illustrated example of Fig. 12b, the predetermined shift is Y, which is less than a cyclic shift separation (Δ_PUCCH_shift) between resources for the UL control channel.
[00126] Process 1300a proceeds to operation 1320a where the eNB 102 and/or eNB 104 scheduler optimizes the scheduling of resources for use by all other UEs being served by the eNB 102, taking into account the determined plurality of orthogonal resources that UE 110 will select for use by UE 110 on the UL control channel. Process 1300a proceeds to operation 1330a where eNB 102 receives control information from UE 110, such as ACK/NACK feedback or other control information, on the UL control channel at the selected first and second orthogonal resources with transmit diversity.
[00127] Fig. 13b is a flowchart illustrating an illustrative process 1300b for returning ACK/NACK SORTD for a single component carrier in FDD operation from a perspective of a UE. Process 1300b starts at initial state 1301b and proceeds to operation 1310b where UE 110 receives a first CCE on a DL control channel (e.g., PDCCH), where the first CCE corresponds to a first resource. Process 1300b proceeds to operation 1320b and selects a second resource which is offset from the first resource by a predetermined offset. The predetermined offset may be X or Y as described above with respect to the features depicted in Figure 12a and Figure 12b, respectively. Process 1300b proceeds to operation 1330b where UE 110 transmits control information, such as ACK/NACK feedback or other control information, on the UL control channel on the selected first and second orthogonal resources with transmit diversity. Process 1300b ends in final state 1340b. B. Multiple component carriers
[00128] In certain FDD modalities, the transmission of DL data (for example, PDSCH) from an eNB to a UE takes place on multiple DL carriers. For example, when PDSCH for a UE is via multiple DL carriers and NxSC-FDM is allowed in uplink, multiple ACK/NACK returns via different PUCCH for all PDSCH transmissions via all active DL carriers can be sent simultaneously via of different orthogonal features within different UL carriers or equal carriers depending on DL/UL carrier mapping (one DL to one UL, or multiple DLs to one UL). A rule for the single-carrier component case can be applied to determine whether SORTD or single-antenna mode should be adopted to send each ACK/NACK return for PDSCH transmission over each DL carrier.
[00129] Fig. 14a is a flowchart illustrating an illustrative process 1400a for returning ACK/NACK SORTD for multiple component carriers in FDD operation from an eNB perspective. To facilitate the illustration without any intention to limit the scope of this description in any way, the process 1400a will be described with reference to figure 1. In this modality for the SORTD mode, it is considered that the eNB has already received the control information to from the UE 110 on a UL control channel which indicates that the UE 110 has multiple antennas 124, for example, for MIMO operation. For example, the eNB 102 may have already received such an indication from the UE 110 by the time the UE 110 enters the network or cell of the eNB 102. Process 1400a starts at the initial state 1401a and proceeds to operation 14010a where the eNB 102 determines , by a pre-established algorithm, a plurality of orthogonal resources that the UE 110 will select for use by the UE 110 in the UL control channel. In that regard, the UE 110 will be selecting the plurality of orthogonal resources according to the pre-established algorithm. Some illustrative feature selection rules/algorithms are described below with reference to figures 15 and 17.
[00130] Process 1400a proceeds to operation 1420a where the eNB 102 and/or the eNB 104 scheduler optimizes the scheduling of resources for use by all other UEs being served by the eNB 102, taking into account the determined plurality of orthogonal resources that UE 110 will select for use by UE 110 on the UL control channel.
[00131] Process 1400a proceeds to operation 1430a where eNB 102 receives control information from UE 110, such as ACK/NACK feedback or other control information, on the UL control channel in the selected plurality of orthogonal resources with diversity of streaming. Process 1400a ends in final state 1440a.
[00132] Fig. 14b is a flowchart illustrating an illustrative process 1400b for returning ACK/NACK SORTD for multiple component carriers in FDD operation from a perspective of a UE. Process 1400b starts at initial state 1401b and proceeds to operation 1410b where UE 110 selects, by a pre-set algorithm, a plurality of orthogonal resources that UE 110 will use for the UL control channel.
[00133] Process 1400b proceeds to operation 1420b where UE 110 transmits control information, such as ACK/NACK feedback or other control information, on the UL control channel on the selected plurality of orthogonal resources with transmit diversity.
[00134] Process 1400b then proceeds to end in final state 1430b. 1. Multiple DL Component Carriers: One-to-One Mapping Configuration
[00135] When DL data transmission (eg PDSCH) occurs over multiple DL carriers, only one DL carrier is associated with each UL carrier in a one-to-one mapping configuration. By way of example, a PDSCH over DL carrier k is programmed by PDCCH over DL carrier k and ACK/NACK for a PDSCH transmission over DL carrier k is sent through PUCCH on UL carrier k.
[00136] Figure 15 is a diagram 1500 illustrating the one-to-one (DL/UL) mapping configuration for ACK/NACK SORTD return for multiple DL component carriers in FDD operation. DL 1501, 1502, 1503 transmissions are performed from an eNB to a UE via DL carriers 1510, 1520, 1530 along with the DCI in CCEs 1511, 1521, 1531, respectively. In this situation, ACK/NACK messages 1549, 1559, 1569 corresponding to DL transmissions 1501, 1502, 1503 are transmitted from the UE to the eNB on an UL control channel (eg PUCCH) via three corresponding UL carriers 1540 , 1550, 1560. Each of the three UL carriers 1540, 1550, 1560 includes a corresponding available resource block, that is, RB1 1541, RB2 1551 and RB3 1561. In the example of figure 15, the resource blocks RB1 1541, RB2 1551 and RB3 1561. In the example of Fig. 15, resource blocks RB1 1541, RB2 1551 and RB3 1561 are mirror-skipped through two time slices within each of the UL carriers 1540, 1550, 1560, respectively. In the illustrated example, two features, that is, RB1 1541 and RB2 1551 on the UL 1540 and 1550 carriers, respectively, are selected from the three available features RB1 1541, RB2 1551 and RB3 1561 based on the relative amounts of UL path losses ( PL1, PL2, PL3) of each corresponding UL 1 Carrier 1540, UL 2 Carrier 1550 and UL 3 Carrier 1560. In the illustrated example, RB3 1561 is not chosen as the path loss PL3 is greater than that of PL1 and PL2. ACK message 1549 for DL bearer 1 is transmitted on RB1 1541 while ACK message 1559 for DL bearer 2 is transmitted on RB2 1551. ACK message 1569 for DL bearer 3 is bundled for transmission on RB1 1541 or RB2 1551. In this way, bundled ACK/NACK messages are sent over the strongest carriers.
[00137] An additional illustrative feature selection rule for FDD/ACK SORTD in a one-to-one configuration is now described. It is assumed that a UE decides to employ a transmission scheme that requires M resources. The M resources can be selected to reside on a set of UL carriers that have the least UL path loss. This rule can also be applied to UEs configured in single-antenna port mode. For example, consider {PL1, PL2, PL3} as the UL path loss of each of the 3 active DL carriers with PDSCH transmission occurring in ascending order, {k1, k2, k3} being the active DL carrier index corresponding. Additionally, consider that Resource_q denotes a set of resources available for the ACK/NACK return on the UL carrier q, where q is found in {k1, k2, k3}. Then, the required M resources can be selected by taking the resources from the Resource_q available resource pool in the following order until all the M resources are obtained: Resource_k1 -> Resource_k2 -> Resource_k3 (in the order of least path loss).
[00138] When SC-FDM is needed, ACK bundling across carriers or ACK multiplexing similar to TDD Rel-8 operation described above with respect to figure 10 can be adopted. For ACK bundling: let {PL1, PL2...} be the UL path loss for each active DL carrier (eg for transmitting a PDSCH) in ascending order, and {k1, k2...} be the corresponding active DL carrier index. If the number of CCEs on DCI for PDSCH through carrier k1 is greater than 1, SORTD is applied across two orthogonal resources connected to two CCEs occupied by DCI on carrier K1.
[00139] If only 1 CCE is used for DCI over carrier k1 and the approaches discussed above with respect to figure 12a and 12b for component single-carrier configuration are allowed, SORTD can be applied across two resources over carrier k1 . Otherwise, if a difference between PL2 and PL1 is less than a PL threshold (PL2-PL1<PL_Thr), SORTD can be applied through two orthogonal resources: one of carrier k1 connected to the first CCE on DCI n carrier k1, and the another from the K2 carrier connected to the first CCE on the DCI on the K2 carrier. In one modality, PL_Thr is a high-layer configured parameter. Otherwise, if PL2-PL1>PL_Thr, a single antenna port mode is applied and PUCCH is sent from carrier k1.
[00140] When SC-FDM is required, ACK/NACK multiplexing with channel selection can be employed. In this approach, it is considered that PUCCH should be sent over the kj carrier after the channel selection has been performed. Then, through the DL carrier kj the watering for the "single-carrier carrier" mode as described above can be applied to determine whether SORTD is applied or not.
[00141] Figure 16a is a flowchart illustrating an illustrative process 1600a for returning ACK/NACK SORTD for multiple DL component carriers in a one-to-one mapping (DL/UL) configuration in FDD operation from a perspective of an eNB. For ease of illustration without any intention to limit the scope of the present description in any way, process 1600a will be described with reference to figure 1.
[00142] The process 1600a starts in the initial state 1601a and proceeds to operation 1610a in which the eNB 102 and/or the eNB 104 programmer determines a set of M orthogonal resources on M UL carriers out of N available resources, the set of M orthogonal resources the resources being that will be selected by the UE 110 using the same algorithm. In the illustrated example in Figure 15, N=3 and M=2 and feature selection is based on an UL path loss with each of the three active UL carriers 1540, 1550, 1560.
[00143] Process 1600a proceeds to operation 1620a where the eNB 102 and/or the eNB 104 scheduler optimizes the scheduling of resources for use by all other UEs being served by the eNB 102, taking into account the determined set of M orthogonal resources that UE 110 will select for use by UE 110 on the UL control channel.
[00144] Process 1600a proceeds to operation 1630a where the eNB 102 receives the ACK/NACK feedback from the UE 110 on an UL control channel (e.g. PUCCH) through M UL carriers in the selected set of M orthogonal resources with diversity of transmission. Process 1600a ends in final state 1640a.
[00145] Fig. 16b is a flowchart illustrating an illustrative process 1600b for returning ACK/NACK SORTD in a one-to-one mapping (DL/UL) configuration in FDD operation from a UE perspective. Process 1600b starts at initial state 1601b and proceeds to operation 1610b where UE 110 selects a set of M orthogonal resources for use in the UL control channel via M UL carriers, the M orthogonal carriers being selected based on path loss respective UL associated with each of a plurality of N resources available on all active UL bearers. Process 1600b proceeds to operation 1620b where UE 110 transmits ACK/NACK on the UL control channel in the set of M orthogonal resources with transmit diversity. Process 1600b ends in final state 1630b. 2. Many-to-One Mapping Setup
[00146] Where DL data transmission occurs over multiple DL carriers, one UL carrier can be associated with multiple DL carriers in a many-to-one mapping configuration. Such many-to-one mapping configurations can be used when an asymmetric DL/UL configuration exists or when a cross-carrier control operation is performed. In the many-to-one mapping configuration, the ACK/NACK feedback for PDSCH transmissions over multiple DL carriers is sent over a single UL carrier.
[00147] Fig. 17 is a 1700 diagram illustrating many-to-one mapping (DL/UL) configuration for ACK/NACK SORTD return on multiple DL component carriers in FDD operation. DL 1701, 1702, 1703 data transmissions are performed from an eNB to a UE via DL carriers 1710, 1720, and 1730 along with the DCIs in CCEs 1711, 1721, and 1731, respectively. In response, 1749 ACK messages corresponding to DL data transmissions 1701, 1702, 1703 are transmitted from the UE to the eNB on an UL control channel (e.g., PUCCH) over a single UL carrier 1740. The single carrier UL 1740 includes three available features, that is, RB1 1741, RB2 1742, and RB3 1743. As seen in figure 17, features RB1 1741, RB2 1742, and RB3 1743 are mirror-skipped across two UL 1740 carrier partitions (leap frequency with partition limit). In the illustrated example, two features, that is, RB1 1741 and RB3 1743 of the single UL 1740 carrier are selected from the three available features based on the proximity of each of the available features to the edges of the 1747 bandwidth of the single UL 1740 carrier Each of the selected features RB1 1741 and RB3 1743 is closer to a lower and upper edge, respectively, of bandwidth compared to the remaining (unselected) RB2 1742. In this way, bundled ACK/NACK messages are sent across the edge RBs, and a potential fragmentation problem when scheduling resource blocks for the uplink data on the UL 1740 carrier can be avoided or minimized.
[00148] An illustrative feature selection rule for returning FDD/ACK SORTD in a many-to-one (DL/UL) configuration is now further described. Assume that a UE decides to employ a transmission scheme that requires M resources. The M resources can be chosen such that the mapped PUCCH resources reside in the physical RBs closest to one or both edges of the bandwidth of the single UL carrier through which the ACK/NACK return is performed. This rule can also be applied to UEs configured in a single-antenna port mode.
[00149] When an SC-FDM waveform is to be preserved, ACK bundling across carriers or ACK multiplexing with channel selection similar to TDD Rel-8 operation described above with respect to figure 10 can be used. For example, consider {n_cce1_1, n_cce2_1, n-cce3_1...} as the indices of the first CCEs in the DCIs for PDSCH transmission over active DL carriers and consider {k1, k2,...} as denoting the corresponding set of active DL carriers.
[00150] For ACK bundling in SC-FDM situation, SORTD is applied through two orthogonal resources selected from the following sets union: {Resources available for ACK/NACK return for PDSCH through carrier k1} + {Resources available for ACK/NACK return for PDSCH through carrier k2}+ ... {Available resources for ACK/NACK return for PDSCH through carrier kL}, where L is a total number of active carriers. Additionally, two resources can be selected from all available resources so that the resulting connected PUCCH resources are mapped to the lowest physical Resource Block index.
[00151] For ACK multiplexing with channel selection in SC-FDM situation, it is considered that the channel selection through the resources connected to the CCEs: {n_cce1_1, n_cce2_1,...} has been performed and the resource connected to the CCE corresponding to n_ccej_1 (first CCE occupied by DCI for PDSCH through DL carrier kj) is selected for PUCCH transmission. When the DCI for PDSCH over the DL carrier kj occupies multiple CCEs, SORTD is applied across the resources connected to a first CCE having an index of n_ccej_1 and a second CCE having an index of n_ccej_1+1 in the DCI for PDSCH over the DL carrier kj . Otherwise, a single antenna port mode is applied (unless similar approaches as described above with respect to Figures 12a and 13b for single component carrier operation are adopted).
[00152] Figure 18a is a flowchart illustrating an illustrative 1800a process for returning ACK/NACK SORTD in a many-to-one (DL/UL) mapping configuration in FDD operation from an eNB perspective. For ease of illustration without any intention to limit the scope of this description in any way, process 1800a will be described with reference to figure 1.
[00153] Process 1800a proceeds to operation 1810a in which the eNB 102 and/or the eNB 104 programmer determines a set of orthogonal resources M that the UE will select on a single UL carrier among the N available resources where the resource selection is based on the proximity of each of the N resources available to an edge of the bandwidth of the single UL carrier. In the example illustrated in Figure 17, N=3, M=2, and resource selection is based on the proximity of each of the available resources to an edge of the 1747 bandwidth of the single UL 1740 carrier.
[00154] Process 1800a proceeds to operation 1820a where the eNB 102 and/or the eNB 104 programmer optimizes the scheduling of resources for use by all other UEs being served by the eNB 102, taking into account the determined set of M orthogonal resources that the UE 110 will select for use by the UE 110 on the UL control channel. Process 1800a proceeds to operation 1830a where the eNB 102 receives the ACK/NACK feedback on the single UL control channel (eg, PUCCH) via a single UL carrier on the selected set of M orthogonal resources with transmit diversity. The 1800a process ends in the 1840a final state.
[00155] Fig. 18b is a flowchart illustrating an illustrative 1800b process for returning ACK/NACK in a many-to-one (DL/UL) mapping configuration in FDD operation from a UE perspective. For ease of illustration without any intention to limit the scope of the present description in any way, process 1800b will be described again with reference to figure 1.
[00156] Process 1800b proceeds to operation 1810b where the UE 110 selects a set of M orthogonal resources for use by the UE 110 in the UL control channel, where the M orthogonal carriers are selected based on the proximity of each of the available resources for a single UL carrier bandwidth edge. Process 1800b proceeds to operation 1820b where the UE 110 transmits the ACK/NACK control information on the UL control channel over the single UL carrier in the transmit diversity orthogonal resource set. The 1800b process ends in the final state 1830b. III. SORTD to TDD: ACK/NACK
[00157] Various illustrative modes of UL control channel resource allocations for ACK/NACL SORTD return for LTE operating in TDD operation are described below. In TDD operation, DCI including resource allocation and other control information for a UE can be transmitted on a DL data channel (eg PDSCH along with data) using one or more control channel elements (CCEs) in multiple subframes DL
[00158] In Fig. 19, a 1900 diagram is provided for the ACK/NACK SORTD return associated with DL data transmissions across multiple DL subframes in the TDD operation. DL 1902, 1902 data transmissions are made from an eNB to a UE via DL subframes 1910, 1920 along with the DCI in CCEs 1911 and 1921, respectively. In response, ACK messages 1949 corresponding to DL data transmissions 1901, 1902 via DL subframes 1910, 1920 are maintained from the UE to the eNB in a UL control channel (eg PUCCH) via a single UL subframe 1940. The single UL 1940 subframe includes the available features, among which are RB1 1941 and RB2 1942, which are illustrated in Figure 19 as being mirror-skipped through both partitions of the UL 1940 subframe. features, RB1 1941 and RB2 1942, are selected based on the proximity of each of the available features to the edges of the bandwidth 1947 associated with the single UL 1940 subframe. The selected feature set RB1 1941 and RB2 1942 is closest to the edges of 1947 bandwidth compared to other features. In this way, bundled ACK/HACK messages are sent through RBs close to the edge, and a potential fragmentation problem when scheduling resources for uplink data can be avoided or minimized.
[00159] An illustrative feature selection rule for ACK/NACK SORTD for TDD operation is now described. Assume that the UE decides to employ a transmission scheme that requires M resources. The M resources can be chosen so that the mapped PUCCH resources reside on the physical RBs closest to the edges of the bandwidth. This rule can also be applied to UEs configured in a single-antenna port mode.
[00160] When NxSC-FDM is allowed, multiple ACK/NACK returns corresponding to PDCCH detected in subframes {n-q_0, n-q_1,...} where {q_0, q_1,...} is a subset of {k_0 ,...,k_M-1}, which is the corresponding DL association set, can be sent simultaneously through different PUCCH resources. For each PDCCH detected in subframe n-q_j, the following rule can be applied:
[00161] If the number of CCEs occupied by the corresponding DCI is only 1, single antenna port mode operation is applied (unless similar approaches to those described above with respect to figures 12a and 12b for single-carrier operation of component are adopted); and
[00162] If the number of CCEs occupied by the corresponding DCI is greater than or equal to 2 and {n_ccej, n_ccej+1,...} denotes the set of CCEs, SORTD is then applied through the PUCCH resources connected to the CCE: n_ccej and CCE: n_ccej+1 in subframe n-q_j.
[00163] When an SC-FDM waveform is to be preserved, ACK bundling across carriers or ACK multiplexing with channel selection similar to TDD Rel-8 operation described above with respect to Fig. 10 can be used. For ACK bundling in such situation, if multiple CCEs are occupied by DCIs for PDSCH transmission in subframes {n-q_0, n-1_1...} where {q_0, q_1,...} is a subset of {k_0, ...,k_M-1}, which is the corresponding DL association set, SORTD can be applied through two orthogonal resources connected to the two CCEs in the set of all occupied CCEs comprising: {CCEs in DCI for PDSCH in subframe n- q_0}+ {CCEs in DCI for PDSCH through subframe n-1_1} + ...etc. The two selected CCEs can be selected so that the resulting connected PUCCH resources are mapped to physical RBs that are closer to the edges of the UL bandwidth. Otherwise, single antenna port mode is applied to send bundled ACK/NACK unless approaches similar to those described above with respect to figure 12a and figure 12b for "Single Component Carrier" FDD mode are adopted for use .
[00164] For ACK multiplexing with channel selection, the channel selection through {n_cce1, n_cce2,...} is considered to have been performed, where n_ccej denotes the first CCE index in the DCI for PDSCH in subframe n - q_j, and so that the resource connected to the CCE: n_ccej in subframe n-q_j is selected for PUCCH transmission. When DCI for PDSCH in subframe n-q_j occupies multiple CCEs, SORTD is applied through the resources connected to CCE: n_ccej and with CCE: n_ccej+1 in DL subframe n-q_j. Otherwise, single antenna port mode is applied unless similar approaches as described above with respect to figures 12a and 12b for "Single Component Carrier" FDD mode are adopted for use.
[00165] Figure 20a is a flowchart illustrating an illustrative process 2000a for returning ACK/NACL SORTD in TDD operation from an eNB perspective. For ease of illustration without any intention to limit the scope of this description in any way, process 2000a will be described with reference to figure 1.
[00166] Process 2000a proceeds to operation 2010a where the eNB 102 and/or the eNB 104 scheduler determines a set of M orthogonal resources that the UE will select in a single UL subframe among the N available resources distributed in the single UL subframe, where resource selection is based on the proximity of each N available resources to a single UL subframe bandwidth edge. In the example illustrated in Figure 19, N=2, M=2, and the feature selection is based on the proximity of the resources available to an edge of the bandwidth 1947 associated with the single UL 1940 subframe. In the example illustrated in Figure 19, features RB1 1941 and RB2 1942 are selected.
[00167] Process 2000a proceeds to operation 2020a where the eNB 102 and/or the eNB 104 programmer optimizes the scheduling of resources for use by other UEs being served by the eNB 102, taking into account the determined set of M orthogonal resources that UE 110 will select for use by UE 110 on the UL control channel.
[00168] Process 2000a proceeds to operation 2030a where the eNB 102 receives the ACK/NACK feedback from the UE 110 on the single UL control channel (e.g. PUCCH) through a single UL subframe in the selected set of M orthogonal resources with transmission diversity. Process 2000a ends in the final state 2040a.
[00169] Fig. 20b is a flowchart illustrating an illustrative process 2000b for returning ACK/NACL SORTD in TDD operation from a UE perspective. Process 2000b starts at initial state 2001b and proceeds to operation 2010b where UE 110 selects a set of M orthogonal resources for use by UE 110 in the UL control channel, where M orthogonal carriers are selected based on the proximity of each of the resources available from an edge of the bandwidth associated with the single UL subframe to be used by UE 110 for ACK/NACK feedback. Process 2000b proceeds to operation 2020b where UE 110 transmits ACK/NACK on the UL control channel through the single UL subframe in the set of M orthogonal resources with transmit diversity. Process 2000b ends in final state 2030b. IV. ACK/NACK SPS, SR, CQI
[00170] Various UL SORTD control channel resource allocation schemes (eg PUCCH) for ACK/NACK SPS, SR and CQI are now described. A. ACK/NACK SPS
[00171] While dynamic scheduling is advantageous for bursty and infrequent bandwidth consuming data transmissions (eg web browsing, video sequencing, email) it is less suitable for time sequencing applications such as voice calls. Here, data is sent in short bursts while at regular intervals. If the data rate of the sequence is too low, as is the case for voice calls, the scheduling message overhead is too high since little data is being sent for each scheduling message.
[00172] SPS can be used in such cases of low data rate sequencing. Rather than dynamically scheduling each uplink or downlink transmission, a semi-persistent transmission pattern is defined. This significantly reduces the programming assignment overhead on the control channel.
[00173] During periods of silence, wireless voice codecs stop transmitting voice data and only send silence description information with much longer time intervals between them. During these quiet times the SPS can be turned off. In uplink, SPS is implicitly canceled if no data is sent for a network-configured number of empty uplink transmission opportunities. In the downlink direction, SPS can be canceled with the RRC message. The network can determine when and for which packages to use SPS based on QCI and dedicated supports.
[00174] Illustrative PUCCH resource scheduling schemes for ACK/NACK SPS are now described. For UE Rel-8, a set of available PUCCH resources are configured by higher layers, and a TPC command on SPS activation is used to indicate a specific PUCCH resource to be sent for ACK/NACK return. For LTE-A UE when configured in a SORTD mode, an upper layer can configure/reserve more PUCCH resources so that LTE-A UE can employ SORTD during ACK/NACK transmission. A value carried by the TPC command can be mapped to two orthogonal resources in the set of total available PUCCH resources configured for the ACK/NACK SRS return. For example, a two-bit value in the TPC command can indicate one of four predetermined combinations of two orthogonal features.
[00175] Figure 21a is a flowchart illustrating an illustrative process 2100a for returning ACK/NACK SPS SORTD from an eNB perspective. For ease of illustration without any intention to limit the scope of the present description in any way, process 2100a will be described with reference to Figure 1. Process 2100a starts at initial state 2101a and proceeds to operation 2110a where the eNB 102 and/or the eNB scheduler 104 determines a semi-persistent plurality of orthogonal resources that the UE 110 will select for use on the UL control channel, where the plurality of orthogonal resources is scheduled based on the SPS for ACK/NACK feedback from the UE.
[00176] Process 2100a proceeds to operation 2120a where the eNB 102 transmits an indication that the UE 110 should select a plurality of orthogonal resources based on the SPS for the ACK/NACK feedback from the UE 110. In certain embodiments, the operation 2120a involves sending a TPC to UE 110 where the TPC includes a value corresponding to an SPS plurality of orthogonal resources. Process 2100a proceeds to operation 2130a where the eNB 102 and/or the eNB 104 scheduler optimize resource scheduling for use by all other UEs being served by the eNB 102, taking into account the determined set of the semi-persistent plurality of orthogonal resources that UE 110 will select for use by UE 110 on the UL control channel. Process 2100a proceeds to operation 2140a where the eNB 102 receives ACK/NACK on the UL control channel in the SPS plurality of orthogonal resources with transmit diversity. Process 2100a ends in final state 2150a.
[00177] Fig. 21b is a flowchart illustrating an illustrative process 2100b for an UL control channel resource allocation for ACK/NACK SPS SORTD mode from a UE perspective.
[00178] Process 2100b proceeds to operation 2110b where UE 110 receives an indication that UE 110 should select an SPS plurality of orthogonal resources for ACK/NACK feedback. As described above with respect to Fig. 21a, the indication may be in the form of a TPC command which includes a value corresponding to an SPS plurality of orthogonal resources. Process 2100b proceeds to operation 2120b where UE 110 selects an SPS plurality of orthogonal resources for ACK/NACK feedback. Process 2100b proceeds to operation 2130b where UE 110 transmits ACK/NACK on the UL control channel on the SPS plurality of orthogonal resources with transmit diversity. Process 2100b ends in final state 2140b. B. Programming Request (SR)
[00179] UL SORTD for SR control channel resource allocation schemes are now described. As described above with reference to Fig. 11a , in a SORTD mode, the eNB 102 and/or the eNB 104 scheduler schedules a plurality of orthogonal resources for the UE 110 on a UL control channel (e.g., PUCCH). In certain embodiments, the plurality of orthogonal resources is programmed to an SR from the UE. Fig. 22a is a diagram 2200a showing an UL carrier 2240a that includes a first resource (RB1) 2241a and a second resource (RB2) 2242a that are programmed for use by UE 110 for an SR. When an LTE-A UE is configured in SORTD for SR, an upper layer configures the two resources 2241a, 2242a for the UE and the UE sends the SR over two resources via SORTD.
[00180] In certain embodiments, an LTE-A UE can send SR and ACK/NACK simultaneously on a plurality of scheduled orthogonal resources. For example, Figure 22b is a diagram 2200b showing an UL carrier 2240b that includes a first resource (RB1) 2241b and a second resource (RB2) 2242b where RB1 2241b is configured for ACK/NACK return and RB2 2242b is configured for SR . SR and ACK/NACK are transmitted from a UE to an eNB via configured RB1 2241b and RB2 2242b, respectively, in parallel. Alternatively, SORTD can be applied independently for SR and ACK/NACK when applicable through the configured resources (RB1 and RB2).
[00181] In some embodiments, an LTE-A UE may send ACK/NACK through resources configured for SR. SORTD is applied when multiple SR resources are configured. For example, Figure 22c is a diagram 2200c showing a UL carrier 2240c that includes a first resource (RB1) 2241c and a second resource (RB2) 2242c. RB1 2241c and RB2 2242c are both set to SR, so ACK/NACK feedback can be sent through both resources set with SORTD. C. Return CQI
[00182] UL SORTD control channel resource allocation schemes for UE CQI feedback will now be described. In certain embodiments, an LTE-A UE is configured to send CQIs over a plurality of scheduled orthogonal resources. Figure 23a is a flowchart illustrating an illustrative process 2300a for CQI SORTD from an eNB perspective. For ease of illustration without any intention to limit the scope of the present description in any way, process 2300a will be described with reference to Figure 1. Process 2300a starts at initial state 2301a and proceeds to operation 2310a in which the eNB 102 e/ or the eNB scheduler 104 determines a plurality of orthogonal resources that the UE will select for CQI on the UL control channel. Process 2300a proceeds to operation 2320a where the eNB 102 and/or the eNB 104 scheduler optimizes the scheduling of resources for use by all other UEs being served by the eNB 102, taking into account the determined plurality of orthogonal resources that the UE 110 will select for use by UE 110 for CQI on the UL control channel. Process 2300a proceeds to operation 2330a where eNB 102 receives CQI from UE 110 on the UL control channel on the scheduled plurality of orthogonal resources with transmit diversity. Process 2300a ends in final state 2340a.
[00183] Fig. 23b is a flowchart illustrating an illustrative process 2300b for CQI SORTD from a UE perspective. Process 2300b starts at initial state 2301b and proceeds to operation 2310b where UE 110 selects a plurality of orthogonal resources for use by UE 110 on the UL control channel for CQI. Process 2300b proceeds to operation 2320b where UE 110 transmits CQI on the UL control channel on the selected plurality of orthogonal resources with transmit diversity. Process 2300b ends in final state 2330b.
[00184] Accordingly, the modalities described here provide the UE transmission diversity when sending various types of control information to the eNB on the UL control channel.
[00185] Those skilled in the art will further appreciate that the various illustrative logic blocks, modules, circuits, and algorithm steps described with respect to aspects described herein can be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this hardware and software interchangeability, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality will be implemented as hardware or software depends on the particular application and design constraints imposed on the system as a whole. Those skilled in the art can implement the described functionality in various ways for each particular application, but such implementation decisions should not be construed as detracting from the scope of the present description.
[00186] As used in this application, the terms "component", "module", "system" and the like shall refer to a computer-related entity, be it hardware, a combination of hardware and software, software, or running software . For example, a component can be, but is not limited to, a process running on a processor, a processor, an object, an executable element, an execution sequence, a program and/or a computer. By way of illustration, both an application running on a server and the server can be a component. One or more components can reside within a process and/or execution sequence and a component can be located on one computer and/or distributed among two or more computers.
[00187] The term "illustrative" is used here to mean serving as an example, case or illustration. Any aspect or design described herein as "illustrative" is not necessarily to be considered preferred or advantageous over other features or designs.
[00188] Several aspects will be presented in terms of systems that may include a number of components, modules and the like. It should be understood and appreciated that the various systems may include additional components and modules, etc. and/or many do not include all components, modules, etc. discussed in relation to the figures. A combination of these approaches can also be used. The various aspects described here can be performed on electrical devices including devices that utilize touch screen display technologies and/or mouse and keyboard interfaces. Examples of such devices include computers (desktop and mobile), smart phones, personal digital assistants (PDAs), and other wired or wireless electronic devices.
[00189] Additionally, the various illustrative logic blocks, modules and circuits described with respect to the aspects described here can be implemented or realized with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC ), a field-programmable gate (FPGA) assembly or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor can be a microprocessor, but in the alternative, the processor can be any conventional processor, controller, microcontroller, or state machine. A processor can also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors together with a DSP core, or any other similar configuration.
[00190] Additionally, the steps of a method or algorithm described with respect to the aspects described here can be directly embodied in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. An illustrative storage medium is coupled to the processor so that the processor can read information from and write information to the storage medium. Alternatively, the storage medium can be integral to the processor. The processor and storage medium can reside on an ASIC. The ASIC can reside on a user terminal. Alternatively, the processor and storage medium can reside as discrete components in a user terminal.
[00191] The foregoing description of the aspects described is provided to allow any person skilled in the art to create or make use of the present description. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the inventive concept or scope of description. As such, the present description should not be limited to the modalities illustrated here, but the broader scope consistent with the principles and new features described here should be agreed.
[00192] In view of the illustrative systems described above, the methodologies that can be implemented according to the present described matter have been described with reference to several flowcharts. While for the sake of simplicity of explanation, the methodologies are illustrated and described as a series of blocks, it should be understood and appreciated that the present claimed subject matter is not limited by the order of blocks, as some blocks may occur in different orders and/ or simultaneously with other blocks from what was presented and described here. Furthermore, not all blocks illustrated may be necessary to implement the methodologies described here. Additionally, it should be further appreciated that the methodologies described here may be stored in an article of manufacture to facilitate transport and transfer of such methodologies to computers. The term article of manufacture, as used herein, shall encompass a computer program accessible from any computer-readable device, carrier, or media.
[00193] It should be appreciated that any patent, publication or other descriptive material, in whole or in part, which is deemed to be incorporated by reference herein is incorporated herein only to the extent that the incorporated material does not conflict with definitions, statements or other existing description material presented in that description. As such, and to the extent necessary, the description as explicitly presented herein supersedes any conflicting material incorporated herein by reference. Any material, or any part thereof, which is considered to be incorporated by reference herein, but which conflicts with existing definitions, statements or other descriptive material presented herein, will only be incorporated to the extent that no conflict arises between such incorporated material and the material of existing description.

权利要求:
Claims (13)
[0001]
1. Method (1300A) for use by an eNodeB, eNB, (102) to allocate resources for an uplink control channel to a user equipment, UE, using multiple transmit antennas in a wireless communication network, characterized comprising: determining (1310A), by a pre-established algorithm, a plurality of orthogonal resources that the UE will select for use in the uplink control channel; optimizing (1320A) resource scheduling for other UEs based on the determined plurality of orthogonal resources; and receiving (1330A) control information from the UE (110) on the uplink control channel on the plurality of orthogonal resources with transmit diversity; wherein a first resource (1221) of the plurality of orthogonal resources is associated with a first control channel element, CCE, which is transmitted from the eNB (102) to the UE (110) via a single downlink carrier , DL, and wherein a second resource (1223) of the plurality of orthogonal resources is determined, by the eNB (102), by a predetermined offset from the first resource.
[0002]
2. Method according to claim 1, characterized in that the plurality of orthogonal resources is used by the UE to transmit at least one of a scheduling request, SR, an acknowledgment/non-acknowledgement return, ACK/NACK, and an indicator of channel quality, CQI.
[0003]
3. Method (1300B) for use by a UE (110) to allocate resources for an uplink control channel to the UE (110) using multiple transmit antennas in a wireless communication network, characterized by comprising: selecting (1320B), by a pre-established algorithm, a plurality of orthogonal resources for use by the UE (110) on the uplink control channel; wherein the preset algorithm is also used by the eNode B, eNB, (102) in determining the plurality of orthogonal resources that the UE (110) will select for use in the uplink control channel; transmitting (1330B) to the eNB (102) the control information on the uplink control channel on the plurality of orthogonal resources with transmit diversity; wherein the method further comprises: receiving (1310B) from the eNB (102) a first control channel element, CCE, on a downlink control channel, the first CCE corresponding to a first resource (1221) of the plurality of orthogonal features; and selecting (1320B) a second feature (1223) from the plurality of orthogonal features, the second feature corresponding to a predetermined offset of the first feature.
[0004]
4. Method according to claim 3, characterized in that the control information includes an acknowledgment/non-acknowledgement, ACK/NACK, feedback from the UE, or a scheduling request, SR, from the UE or an ACK/NACK feedback and SR return simultaneously from the UE or a channel quality indicator, CQI, from the UE.
[0005]
Method according to claim 3, characterized in that the first CCE has an index of n_cce, and the second resource corresponds to a second CCE having an index of n_cce + X, where X is a non-zero integer indicative of the predetermined offset .
[0006]
Method according to claim 5, characterized in that the first CCE has a first index of n_cce that maps the first resource with a cyclical offset of x, and where the second resource is determined by a same orthogonal coverage index as the first resource and a cyclic shift of x + y, where y is less than a signaled minimum cyclic shift separation between the resources of the uplink control channel.
[0007]
7. Wireless communication apparatus for use in a wireless communication network, the apparatus supporting resource allocation for an uplink control channel to a user equipment, UE, using multiple transmit antennas, the apparatus characterized in that it comprises : mechanisms for determining, by a pre-established algorithm, a plurality of orthogonal resources that the UE (110) will select for use in the uplink control channel; mechanisms to optimize resource scheduling for other UEs based on the determined plurality of orthogonal resources; and mechanisms for receiving control information from the UE on the uplink control channel on the plurality of orthogonal resources with transmit diversity; wherein a first resource (1221) of the plurality of orthogonal resources is associated with a first control channel element, CCE, which is transmitted from the eNB (102) to the UE (110) via a single downlink carrier , DL, and wherein a second resource (1223) of the plurality of orthogonal resources is determined, by the eNB (102), by a predetermined offset of the first resource.
[0008]
8. Apparatus according to claim 7, characterized in that the control information comprises at least one of a scheduling request, SR, an acknowledge/non-acknowledgement return, ACK/NACK, and a channel quality indicator, CQI .
[0009]
9. UE apparatus for use in a wireless communication network, the apparatus supporting resource allocation for an uplink control channel using multiple transmit antennas, the apparatus comprising: mechanisms for selecting, by a pre- established, a plurality of orthogonal resources for use on the uplink control channel; wherein the preset algorithm is also used by the eNode B, eNB, (102) in determining the plurality of orthogonal resources that the UE (110) will select for use in the uplink control channel; mechanisms for transmitting to the eNB (102) control information on the uplink control channel on the plurality of orthogonal resources with transmit diversity; mechanisms for receiving from the eNB (102) a first control channel element, CCE, on a downlink control channel, DL, the first CCE corresponding to a first resource (1221) of the plurality of orthogonal resources; and mechanisms for determining a second resource (1223) from the plurality of orthogonal resources, the second resource corresponding to a predetermined offset of the first resource.
[0010]
Apparatus according to claim 9, characterized in that the control information includes an acknowledge/non-acknowledgement, ACK/NACK, or an SR feedback transmitted on the first resource of the plurality of orthogonal resources and also includes an ACK/ NACK transmitted on the second resource of the plurality of orthogonal resources.
[0011]
Apparatus according to claim 9, characterized in that the first CCE has an index of n_cce, and the second resource corresponds to a second CCE having an index of n_cce + X, where X is a non-zero integer indicative of the predetermined offset .
[0012]
Apparatus according to claim 9, characterized in that the first CCE has a first index of n_cce that maps the first resource with a cyclical offset of x, and where the second resource is determined by a same orthogonal coverage index as the first resource and a cyclic shift of x + y, where y is less than a signaled minimum cyclic shift separation between the resources of the uplink control channel.
[0013]
13. Memory characterized by comprising instructions that, when executed by a computer, cause the computer to perform the method as defined in any one of claims 1 to 6.

类似技术:

---

公开号 | 公开日 | 专利标题

---

BR112012006997B1|2021-05-18|uplink control channel resource allocation for transmit diversity

---

JP6651650B2|2020-02-19|System and method for SRS switching, transmission and extension

---

US10548153B2|2020-01-28|Methods and apparatus for supporting frequency division multiplexing of multiple waveforms

---

JP6437918B2|2018-12-12|Radio frame setting method for user equipment, user equipment, radio frame setting method for base station, and base station

---

TWI726141B|2021-05-01|Bandwidth group | for enhanced channel and interference mitigation in 5g new radio

---

RU2507688C2|2014-02-20|Channel quality feedback in multicarrier systems

---

EP2807763B1|2019-05-08|Method and apparatus for providing data service using broadcasting signal

---

BRPI1014109B1|2021-02-09|method and apparatus for monitoring a physical downlink control channel to receive broadcast, multicast or unicast information, method and apparatus for transmitting a physical downlink control channel for sending broadcast, multicast or unicast information, all in a communication system wireless and computer readable memory

---

KR20130019415A|2013-02-26|Uplink sounding reference signals configuration and transmission

---

JP6894885B2|2021-06-30|Terminals, wireless communication methods, base stations and systems

---

US10568040B2|2020-02-18|Terminal and radio communication method

---

JP6865501B2|2021-04-28|Terminals, wireless base stations and wireless communication methods

---

US10880864B2|2020-12-29|Methods and apparatuses for waveform indication in high-frequency bands

---

US20180254868A1|2018-09-06|User terminal, radio base station, and radio communication method

---

JP6633084B2|2020-01-22|User terminal, wireless base station, and wireless communication method

---

WO2019170106A1|2019-09-12|Power control method and device

---

WO2017164142A1|2017-09-28|User terminal, wireless base station, and wireless communication method

---

JP7028646B2|2022-03-02|Terminals, wireless communication methods, base stations and systems

---

WO2021231626A1|2021-11-18|Dynamic and compact measurement report resolution in wireless systems

---

TW201909611A|2019-03-01|Physical channel configuration according to frame structure

---

BR112012018878B1|2021-11-30|METHOD ON A USER EQUIPMENT TO DISCLOSE CHANNEL STATUS INFORMATION, METHOD AND DISPOSITION ON A BASE STATION TO OBTAIN CHANNEL STATUS INFORMATION, AND, LAYOUT ON A USER EQUIPMENT ADAPTED TO COMMUNICATE WITH THE BASE STATION ON A COMMUNICATION NETWORK CELL

同族专利:

---

公开号 | 公开日

---

ES2741855T3|2020-02-12|

---

CN102687414A|2012-09-19|

---

TWI441468B|2014-06-11|

---

CN102687414B|2015-12-02|

---

EP2484022A1|2012-08-08|

---

JP2013506386A|2013-02-21|

---

US20110228731A1|2011-09-22|

---

KR101397653B1|2014-05-23|

---

BR112012006997A2|2017-05-30|

---

WO2011041445A1|2011-04-07|

---

JP5694337B2|2015-04-01|

---

EP2484022B1|2019-05-22|

---

KR20120073319A|2012-07-04|

---

US8670396B2|2014-03-11|

---

TW201136218A|2011-10-16|

---

HUE043943T2|2019-09-30|

引用文献:

---

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

---

---

US7620367B2|2005-10-31|2009-11-17|Ipwireless, Inc.|Frequency domain unscheduled transmission in a TDD wireless communications system|

---

US8611300B2|2006-01-18|2013-12-17|Motorola Mobility Llc|Method and apparatus for conveying control channel information in OFDMA system|

---

US8068457B2|2007-03-13|2011-11-29|Samsung Electronics Co., Ltd.|Methods for transmitting multiple acknowledgments in single carrier FDMA systems|

---

JP4558020B2|2007-08-14|2010-10-06|株式会社エヌ・ティ・ティ・ドコモ|User apparatus, transmission method, and communication system|

---

US8739013B2|2007-09-28|2014-05-27|Lg Electronics Inc.|Method for detecting control information in wireless communication system|

---

AU2008320874B2|2007-10-30|2013-09-19|Nokia Solutions And Networks Oy|Providing improved scheduling request signaling with ACK/NACK or CQI|

---

KR101417084B1|2008-07-02|2014-08-07|엘지전자 주식회사|Method of transmitting reference signals for uplink transmission|

---

US8792839B2|2009-05-14|2014-07-29|Qualcomm Incorporated|Allocating transmit power among multiple air interfaces|EP2437561B1|2009-05-26|2018-07-04|Sharp Kabushiki Kaisha|Mobile communication system, base station apparatus, mobile station apparatus, and mobile communication method|

---

JP5482068B2|2009-10-01|2014-04-23|ソニー株式会社|Relay station, relay method, radio communication system, and radio communication apparatus|

---

CN102045789B|2009-10-16|2013-05-08|中兴通讯股份有限公司|Frequency physics resource scheduling method and system based on frequency hopping|

---

JP5005018B2|2009-11-02|2012-08-22|株式会社エヌ・ティ・ティ・ドコモ|Mobile terminal apparatus, radio base station apparatus, and radio communication method|

---

CN102014510B|2009-11-03|2015-02-25|电信科学技术研究院|Method, equipment and system of uplink control channel resource allocation|

---

WO2011083984A2|2010-01-07|2011-07-14|Samsung Electronics Co., Ltd.|Resource indexing for acknowledgement signals in response to receptions of multiple assignments|

---

US20110243079A1|2010-03-18|2011-10-06|Texas Instruments Incorporated|Transmission Modes and Signaling for Uplink MIMO Support or Single TB Dual-Layer Transmission in LTE Uplink|

---

CN102083211B|2010-03-29|2017-04-19|电信科学技术研究院|Determining method and equipment of uplink control channel resources|

---

US8644199B2|2010-03-31|2014-02-04|Samsung Electronics Co., Ltd|Indexing resources for transmission of acknowledgement signals in multi-cell TDD communication systems|

---

CN102083181B|2010-11-09|2013-11-20|大唐移动通信设备有限公司|Power control method and device|

---

KR101875611B1|2010-11-22|2018-07-06|엘지전자 주식회사|Method and apparatus for transmitting ack/nack for downlink transmission in a wireless communication system|

---

CN102595514B|2011-01-12|2015-03-18|上海贝尔股份有限公司|Configuration method for non-periodic detection reference signal|

---

CN103444106B|2011-03-18|2016-05-11|Lg电子株式会社|The method sending control information in wireless communication system and equipment thereof|

---

EP2706678B1|2011-05-03|2019-04-03|LG Electronics Inc.|Method for transmitting/receiving downlink control information in wireless communication system and device therefor|

---

CN102857325B|2011-06-27|2017-08-04|华为技术有限公司|Determine the method and user equipment of control channel resource|

---

TW201322813A|2011-08-11|2013-06-01|Research In Motion Ltd|Orthogonal resource selection transmit diversity and resource assignment|

---

EP2742628A4|2011-08-11|2015-05-20|Nokia Corp|Pdsch assignment indication for fdd scell ack/nack transmission|

---

US9949211B2|2011-08-24|2018-04-17|Lg Electronics Inc.|Method for controlling PUCCH transmission power in wireless communication system and terminal for same|

---

US8842628B2|2011-09-12|2014-09-23|Blackberry Limited|Enhanced PDCCH with transmit diversity in LTE systems|

---

EP2771991B1|2011-10-24|2018-12-19|LG Electronics Inc.|Method and apparatus for allocating resources in wireless communication system|

---

US9439208B2|2011-11-04|2016-09-06|Intel Corporation|Scheduling requests for wireless communication devices running background applications|

---

US9826514B2|2011-11-16|2017-11-21|Qualcomm Incorporated|Downlink control informationdesign for low cost devices|

---

US20130172032A1|2011-12-29|2013-07-04|International Business Machines Corporation|Controlling Communication Between Whitespace Devices|

---

GB2498814B|2012-01-30|2013-12-04|Renesas Mobile Corp|Transceiver|

---

US9693340B2|2012-02-03|2017-06-27|Lg Electronics Inc.|Method and apparatus for transmitting uplink control information in wireless communication system|

---

US9271271B2|2012-03-05|2016-02-23|Samsung Electronics Co., Ltd|HARQ-ACK signal transmission in response to detection of control channel type in case of multiple control channel types|

---

IN2012DE00756A|2012-03-15|2015-08-21|Nokia Siemens Network Oy|

---

US9526091B2|2012-03-16|2016-12-20|Intel Corporation|Method and apparatus for coordination of self-optimization functions in a wireless network|

---

EP2830234B1|2012-03-19|2018-08-01|Panasonic Intellectual Property Corporation of America|Transmission device, receiving device, transmission method, and receiving method|

---

KR101533208B1|2012-04-11|2015-07-01|가부시키가이샤 히다치 고쿠사이 덴키|Radio system, radio base station, and management apparatus|

---

KR102040622B1|2012-04-15|2019-11-05|엘지전자 주식회사|Method for determining uplink resource, method for transmitting uplink control signal using same, and apparatus therefor|

---

CN103379604B|2012-04-20|2018-04-27|北京三星通信技术研究有限公司|Ascending power control method in dynamic TDD cell|

---

CN104285399B|2012-05-10|2018-03-30|瑞典爱立信有限公司|Method and apparatus for hybrid automatic repeat-request signaling|

---

EP2897435B1|2012-09-17|2019-11-06|LG Electronics Inc.|Method and apparatus for receiving downlink signal in wireless communication system|

---

US9503140B2|2012-09-28|2016-11-22|Telefonaktiebolaget Lm Ericsson |Methods reducing antenna port interference for EPDCCH and related systems, devices, and networks|

---

JP2014090396A|2012-10-04|2014-05-15|Ntt Docomo Inc|Mobile station and wireless base station|

---

US10314015B2|2012-10-26|2019-06-04|Intel Corporation|Reporting of user plan congestion|

---

WO2014077577A1|2012-11-13|2014-05-22|엘지전자 주식회사|Method and apparatus for transmitting data, and method and apparatus for transmitting data|

---

EP3051908B1|2013-09-26|2021-12-15|Sharp Kabushiki Kaisha|Terminal, base station, and communication method|

---

CN112738900A|2014-09-01|2021-04-30|瑞典爱立信有限公司|Radio transmission method, device, node and medium in cellular network|

---

US10143005B2|2014-11-07|2018-11-27|Qualcomm Incorporated|Uplink control resource allocation for dynamic time-division duplex systems|

---

US9820298B2|2015-03-09|2017-11-14|Ofinno Technologies, Llc|Scheduling request in a wireless device and wireless network|

---

US10182406B2|2015-03-09|2019-01-15|Comcast Cable Communications, Llc|Power headroom report for a wireless device and a base station|

---

US10700845B2|2015-03-09|2020-06-30|Comcast Cable Communications, Llc|Secondary cell deactivation in a wireless device and a base station|

---

US9820264B2|2015-03-09|2017-11-14|Ofinno Technologies, Llc|Data and multicast signals in a wireless device and wireless network|

---

US10327236B2|2015-03-09|2019-06-18|Comcast Cable Communications, Llc|Secondary cell in a wireless device and wireless network|

---

US9877334B2|2015-04-05|2018-01-23|Ofinno Technologies, Llc|Cell configuration in a wireless device and wireless network|

---

MX368344B|2015-05-15|2019-09-30|Ericsson Telefon Ab L M|Communicating a transport block in a wireless network.|

---

US10200177B2|2015-06-12|2019-02-05|Comcast Cable Communications, Llc|Scheduling request on a secondary cell of a wireless device|

---

US9894681B2|2015-06-12|2018-02-13|Ofinno Technologies, Llc|Uplink scheduling in a wireless device and wireless network|

---

JP6470426B2|2015-11-13|2019-02-13|日本電信電話株式会社|Resource allocation device and resource allocation method|

---

US20210120557A1|2017-03-17|2021-04-22|Ntt Docomo, Inc.|User terminal and radio communication method|

---

CN110463107A|2017-04-28|2019-11-15|富士通株式会社|Terminal installation, base station apparatus, wireless communication system and control method of terminal apparatus|

---

WO2019028703A1|2017-08-09|2019-02-14|Oppo广东移动通信有限公司|Method for determining length of feedback response information and related product|

---

WO2019029202A1|2017-08-09|2019-02-14|Oppo广东移动通信有限公司|Method for determining total number of bits of feedback response information and related product|

法律状态:
2017-06-06| B15I| Others concerning applications: loss of priority|

---

2017-06-27| B12F| Appeal: other appeals|

---

2019-01-08| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|

---

2020-01-21| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

---

2020-01-21| B15K| Others concerning applications: alteration of classification|Free format text: AS CLASSIFICACOES ANTERIORES ERAM: H04B 7/04 , H04W 72/12 Ipc: H04W 72/12 (2009.01), H04W 52/14 (2009.01), H04W 5 |

---

2021-03-09| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

---

2021-05-18| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 29/09/2010, OBSERVADAS AS CONDICOES LEGAIS. PATENTE CONCEDIDA CONFORME ADI 5.529/DF |

优先权:

---

申请号 | 申请日 | 专利标题

---

US24684109P| true| 2009-09-29|2009-09-29|

---

US61/246,841|2009-09-29|

---

US12/890,452|US8670396B2|2009-09-29|2010-09-24|Uplink control channel resource allocation for transmit diversity|

---

US12/890,452|2010-09-24|

---

PCT/US2010/050768|WO2011041445A1|2009-09-29|2010-09-29|Uplink control channel resource allocation for transmit diversity|

---