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    • 专利摘要:
    semi-persistent programming leases in heterogeneous networks particularly by time division multiplexing (tdm) is an inter-cell interference (icic) coordination mechanism for a heterogeneous network icicle (hetnet) in a co-channel implementation. for example, a subframe that is pre-assigned to an evolved b node (inb), neighboring enbs cannot transmit, so the interference experienced by user equipment (ues served) can be reduced. semi-persistent programming grants (sps) may have multiple periodicities available, which may not be compatible with tdm partitioning. therefore, an eu can miss an opportunity of sps that was programmed for a subframe that was not usable by the eu. thus, using sps concessions with short periodicity in a heterogeneous network with tdm partitioning may require changes that may include adjusting sps grant periodicity, reprogramming uplink sps messages based on resource partitioning information (rpi), and / or determine rip based on current sps concessions.
    公开号:BR112012026832B1
    申请号:R112012026832-5
    申请日:2011-04-20
    公开日:2021-03-02
    发明作者:Alan Barbiere；Hao Xu；Madhavan Srinivasan Vajapeyam；Aleksandar Damnjanovic
    申请人:Qualcomm Incorporated；
    IPC主号:
    专利说明:

    PRIORITY CLAIM
    [001] The present Patent Application claims the U.S. Provisional Patent Application no. serial number 61 / 326.193, entitled "SPS GRANTS IN HETNET", filed on April 20, 2010 and assigned to the assignee of the same and expressly incorporated by reference in this document. FUNDAMENTALS I. field
    [002] Certain aspects of the present disclosure generally refer to wireless communications and, more particularly, to a method for exchanging scheduled transmissions over a heterogeneous network. II. fundamentals
    [003] Wireless communication networks are widely deployed to provide various communication services such as voice, video, data packet, message exchange, broadcast, etc. These wireless networks can include multiple access networks capable of supporting multiple users by sharing available network resources. Code Division Multiple Access Networks (CDMA), Time Division Multiple Access Networks (TDMA), Frequency Division Multiple Access Networks (FDMA), Orthogonal FDMA Networks (OFDMA) and Single Carrier FDMA Networks (SC-FDMA) are examples of such multiple access networks.
    [004] A wireless communication network can include several base stations that can support communication to various user equipment (UEs). The UE can communicate with a base station via downlink and uplink. The downlink (or direct link) refers to the communication link from the base station to the UE and the uplink (or reverse link) refers to the communication link from the UE to the base station.
    [005] The Base Station can transmit control information and data in the downlink to the UE and / or can receive data and control information about the uplink from the UE. In the downlink, a transmission from the base station may observe interference due to transmissions from neighboring base stations. In the uplink, a transmission from the UE can cause interference in the transmissions of other UEs that communicate with neighboring base stations. Interference can degrade downlink and uplink performance. SUMMARY
    [006] Time division multiplexing (TDM) partitioning is one of the inter-cell interference coordination (ICIC) mechanisms considered for a heterogeneous network ICIC (HetNet) in a cochannel deployment. For example, in subframes that are pre-allocated to an evolved B node (eNB), neighboring eNBs cannot transmit, so interference experienced by served user equipment (UEs) can be reduced. Semi-persistent scheduling leases (SPS) may have multiple periodicities available, which may not be compatible with TDM partitioning. Therefore, the UE may miss an SPS opportunity that has been programmed for a subframe that was not usable by the UE. Therefore, using SPS concessions with small recurrences on a heterogeneous network with TDM partitioning may require changes that may include adjusting the SPS grant intervals, rescheduling SPS uplink messages based on resource partitioning information (RPI), and / or determination RPI based on current SPS concessions.
    [007] Certain aspects of this disclosure provide a method for wireless communications. The method generally includes the determination of the resource partitioning information (RPI), having a first periodicity, in which the RPI includes information that identifies the subframe that is usable by a user equipment (UE) and protected due to the cooperative partitioning of resources between a service B node and one or more non-service Bs node; send a semi-persistent programming grant (SPS) message identifying the one or more subframes for scheduled transmissions, in which the SPS grant message, having a second periodicity, is determined based, at least in part, on the RPI; and exchange programmed transmissions with the UE, in accordance with the SPS grant message.
    [008] Certain aspects of the present disclosure provide a device for wireless communications. The device usually includes means to determine the resource partitioning information (RPI), having a first periodicity, in which the RPI includes information that identifies the subframe that is usable by a user equipment (UE) and protected due to the cooperative partitioning of resources between a service B node and one or more non-service B Nodes; means for sending a semi-persistent programming grant (SPS) message identifying the one or more subframes for scheduled transmissions, in which the SPS grant message, having a second periodicity, is determined based, at least in part, on the RPI; and means to exchange scheduled transmissions with the UE, in accordance with the SPS grant message.
    [009] Certain aspects of the present disclosure provide a device for wireless communications. The device generally includes at least one processor configured to determine the resource partitioning information (RPI), having a first periodicity, in which the RPI includes information that identifies the subframe that is usable by a user equipment (UE) and protected due to to the cooperative partitioning of resources between a service B node and one or more non-service B nodes, send a semi-persistent programming grant message (SPS) identifying the one or more subframes for scheduled transmissions, in which the grant information SPS, having a second periodicity, is determined based, at least in part, on the RPI and to exchange programmed transmissions with the UE, according to the SPS concession message.
    [0010] Certain aspects provide a computer program product for wireless communications. The computer program product typically includes a computer-readable medium having instructions stored on it, the instructions being executable by one or more processors. The instructions usually include the code to determine the resource partitioning information (RPI), having a first periodicity, in which the RPI includes information that identifies the subframe that is usable by a user equipment (UE) and protected due to the cooperative partitioning resources between a service B node and one or more non-service B Nodes; code for sending a semi-persistent programming grant (SPS) message identifying the one or more subframes for scheduled transmissions, in which the SPS grant message, having a second periodicity, is determined based, at least in part, on the RPI; code to exchange programmed transmissions with the UE, according to the SPS grant message.
    [0011] Certain aspects of this disclosure provide a method for wireless communications. The method generally includes receiving a semi-persistent programming grant message (SPS) identifying one or more subframes for scheduled transmissions, in which the SPS grant message, having a first periodicity, is determined based, at least in part, on resource partitioning information (RPI) having a second periodicity, in which the RPI includes information that identifies the subframe that can be used by user equipment (UE) and protected due to the cooperative partitioning of resources between a service node B and one or more non-service B nodes; and exchange transmissions scheduled with node B according to the SPS grant message.
    [0012] Certain aspects of the present disclosure provide a device for wireless communications. The apparatus generally includes means for receiving a semi-persistent programming grant (SPS) message identifying the one or more subframes for scheduled transmissions, in which the SPS grant message, having a first periodicity, is determined based, at least in part , in the resource partitioning information (RPI) having a second periodicity, in which the RPI includes information that identifies the subframe that is usable by a user equipment (UE) and protected due to the cooperative partitioning of resources between a service node B and one or more non-service B nodes; and means for exchanging scheduled transmissions with node B according to the SPS grant message.
    [0013] Certain aspects of the present disclosure provide a device for wireless communications. The apparatus generally includes at least one processor configured to receive a semi-persistent programming grant (SPS) message identifying the one or more subframes for scheduled transmissions, in which the SPS grant information, having a first periodicity, is determined based on, at least in part, in the resource partitioning information (RPI) having a second periodicity, in which the RPI includes information that identifies subframes that are usable by a user equipment (UE) and protected due to the cooperative partitioning of resources between a node Service B and one or more non-service B nodes and exchange programmed transmissions with node B according to the SPS grant message.
    [0014] Certain aspects provide a computer program product for wireless communications. The computer program product typically includes a computer-readable medium having instructions stored on it, the instructions being executable by one or more processors. The instructions generally include the code for receiving a semi-persistent programming grant (SPS) message identifying the one or more subframes for scheduled transmissions, in which the SPS grant message, having a first periodicity, is determined based on, by the less in part, in the resource partitioning information (RPI) having a second periodicity, in which the RPI includes information that identifies the subframe that is usable by a user equipment (UE) and protected due to the cooperative partitioning of resources between a node Service B and one or more non-service B nodes; and code to exchange transmissions scheduled with node B according to the SPS grant message.
    [0015] Certain aspects of this disclosure provide a method for wireless communications. The method generally includes the determination of resource partitioning information (RPI) which includes information that identifies one or more subframes that are usable by user equipment (UE) and protected due to the cooperative partitioning of resources between a service node B and one or more non-service B nodes, where RPI is determined based, at least in part, on current semi-persistent programming (SPS) concessions.
    [0016] Certain aspects of the present disclosure provide a device for wireless communications. The apparatus generally includes means for determining resource partitioning information (RPI) which includes information that identifies one or more subframes that are usable by user equipment (UE) and protected due to cooperative resource partitioning between a service node B and one or more non-service B nodes, where RPI is determined based, at least in part, on current semi-persistent programming (SPS) concessions.
    [0017] Certain aspects of the present disclosure provide a device for wireless communications. The device generally includes at least one processor configured to determine resource partitioning information (RPI) that includes information that identifies one or more subframes that are usable by a user device (UE) and protected due to the cooperative partitioning of resources between one service B node and one or more non-service B nodes, where RPI is determined based, at least in part, on current semi-persistent programming grants (SPS).
    [0018] Certain aspects provide a computer program product for wireless communications. The computer program product typically includes a computer-readable medium having instructions stored on it, the instructions being executable by one or more processors. The instructions generally include the code for determining resource partitioning information (RPI) which includes information that identifies one or more subframes that are usable by user equipment (UE) and protected due to cooperative resource partitioning between a B node of service and one or more non-service B nodes, where RPI is determined based, at least in part, on current semi-persistent programming (SPS) concessions.
    [0019] Various aspects and characteristics of the disclosure are described in more detail below. BRIEF DESCRIPTION OF THE DRAWINGS
    [0020] Figure 1 is a block diagram conceptually illustrating an example of a wireless communications network in accordance with certain aspects of the present disclosure.
    [0021] Figure 2 is a block diagram conceptually illustrating an example of a frame structure in a wireless communications network in accordance with certain aspects of the present disclosure.
    [0022] Figure 2A shows an exemplary format for the Long Term Evolution uplink (LTE) according to certain aspects of this disclosure.
    [0023] Figure 3 shows a block diagram conceptually illustrating an example of a Node B in communication with a user equipment device (UE) in a wireless communications network in accordance with certain aspects of the present disclosure.
    [0024] Figure 4 illustrates an exemplary heterogeneous network.
    [0025] Figure 5 illustrates an example of resource partitioning in a heterogeneous network.
    [0026] Figure 6 illustrates an example of cooperative partitioning of subframes in a heterogeneous network.
    [0027] Figure 7 illustrates an example of operations for sending a semi-persistent programming grant (SPS) message that is determined based, at least in part, on resource partitioning information (RPI), according to certain aspects of this disclosure.
    [0028] Figure 7 illustrates an example of components capable of performing the operations illustrated in Figure 7.
    [0029] Figure 7B illustrates an example of components capable of determining RPI based, at least in part, on current SPS concessions, in accordance with certain aspects of this disclosure.
    [0030] Figure 8 illustrates an example of operations for receiving an SPS grant message that is determined based, at least in part, on the RPI, in accordance with certain aspects of this disclosure.
    [0031] Figure 8 illustrates an example of components capable of performing the operations illustrated in Figure 8.
    [0032] Figures 9 to 12 illustrate examples of a UE receiving an SPS grant message to schedule transmissions between a service node B and the UE, in accordance with certain aspects of the present disclosure. DETAILED DESCRIPTION
    [0033] The techniques described here can be used for different wireless communications networks, such as CDMA, TDMA, FDMA, OFDMA, SC-FDMA and other networks. The terms "network" and "system" are often used interchangeably. A CDMA network can implement radio technology such as Universal Terrestrial Access Radio (UTRA), CDMA2000, etc. UTRA includes Broadband CDMA (WCDMA) and other variants of CDMA. CDMA2000 covers IS-2000, IS-95 and IS-856 standards. A TDMA network can implement radio technology, such as the Global System for Mobile Communications (GSM). An OFDMA network can implement radio technology, such as Evolved UTRA (E-UTRA), Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM ®, etc. UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (UMTS). Long Term Evolution (LTE) 3GPP and Advanced LTE (LTE-A) are new launches of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A and GSM are described in documents from an organization called "3rd Generation Partnership Project" (3GPP). cdma2000 and UMB are described in documents from an organization called "3rd Generation Partnership Project 2" (3GPP2). The techniques described here can be used for the wireless networks and radio technologies mentioned above, as well as other wireless and radio network technologies. For clarity, certain aspects of the techniques are described below for LTE and LTE terminology is used in much of the description that follows.
    [0034] Figure 1 shows a wireless communication network 100, which can be an LTE network. The wireless network 100 can include a number of Evolved Bs Nodes (eNBs) and other network entities 110. An eNB can be a station that communicates with user equipment devices (UEs), and can also be referred to as a base station, a B node, an access point, etc. Each eNB 110 can provide communication coverage for a specific geographic area. In 3GPP, the term "cell" can refer to a coverage area of an eNB and / or an eNB service subsystem this coverage area, depending on the context in which the term is used.
    [0035] An eNB can provide communication coverage for a macro cell, a peak cell, a femto cell, and / or other types of cells. A macro cell can cover a relatively large geographical area (for example, several kilometers in radius) and can allow unrestricted access by UEs with a service subscription. A peak cell can cover a relatively small geographical area and can allow unrestricted access by UEs with a service subscription. A femto cell can cover a relatively small geographic area (for example, a house) and can allow restricted access by UEs that are associated with the femto cell (for example, UEs in a Closed Subscriber Group (CSG), UEs for users in home, etc.). An eNB for a macro cell can be referred to as a macro eNB. An eNB for a peak cell can be referred to as a peak eNB. An eNB for a femto cell can be referred to as a femto eNB or a native eNB. In the example shown in figure 1, eNBs 110a, 110b and 110c can be macro eNBs for macro cells 102a, 102b and 102c, respectively. eNB 110x can be a peak eNB for a 102x peak cell. 110y and 110z eNBs can be femto eNBs for 102y and 102z femto cells, respectively. An eNB can support one or more (for example, three) cells.
    [0036] Wireless network 100 may also include relay stations. A relay station is a station that receives a transmission of data and / or other information from an upstream station (for example, an eNB or UE) and sends a transmission of data and / or other information to the station to downstream (for example, a UE or an eNB). The relay station can also be a UE that relays transmissions to other UEs. In the example shown in figure 1, a relay station 110r can communicate with an eNB 110a and at UE 120r, in order to facilitate communication between the eNB 110 and UE 120r. The relay station can also be referred to as a relay eNB, a retransmission, etc.
    [0037] Wireless network 100 can be a heterogeneous network (HetNet) that includes eNBs of different types, for example, macro eNBs, peak eNBs, femto eNBs, retransmissions, etc. These different types of eNBs can have different levels of transmission power, different coverage areas and different impact on interference in the wireless network 100. For example, macro eNBs can have a high transmission power level (for example, 20 watts ), while peak eNBs, femto e retransmission eNBs may have a low level of transmit power (for example, 1 watt).
    [0038] Wireless network 100 can support synchronous or asynchronous operation. For synchronous operation, eNBs can have similar frame timing and different eNB transmissions can be roughly aligned in time. For asynchronous operation, eNBs can have different frame timing, and transmissions from different eNBs cannot be time aligned. The techniques described in this document can be used for synchronous and asynchronous operation.
    [0039] A network controller 130 can couple with a set of eNBs and provide coordination and control for those eNBs. The network controller 130 can communicate with the eNBs 110 through a backhaul transport channel. ENBs 110 can also communicate with each other, for example, directly or indirectly via wireless return transport channel or wired return transport channel.
    [0040] UEs 120 can be dispersed throughout the wireless network 100, and each UE can be fixed or mobile. A UE can also be referred to as a terminal, a mobile station, a subscriber unit, a station, etc. A UE can be a cell phone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a portable device, a portable computer, a cordless phone, a local wireless loop station (WLL ), a tablet, etc. A UE may be able to communicate with macro eNBs, peak eNBs, femto eNBs, retransmissions, etc. In figure 1, a full line with double arrows indicates desired transmissions between a UE and a service eNB, which is an eNB designated to serve the UE in the downlink and / or uplink. A dashed line with double arrows indicates interfering transmissions between a UE and an eNodeB.
    [0041] LTE uses orthogonal frequency division multiplexing (OFDM) in the downlink and single carrier frequency division multiplexing (SC-FDM) in the uplink. OFDM and SC-FDM divide the system's bandwidth into multiple (K) orthogonal subcarriers, which are also commonly referred to as tones, beams, etc. Each subcarrier can be modulated with data. In general, the modulation symbols are sent in the frequency domain with OFDM and in the time domain with SC-FDM. The spacing between adjacent subcarriers can be fixed, and the total number of subcarriers (K) can be dependent on the system's bandwidth. For example, K can be equal to 128, 256, 512, 1024 or 2048 for the system bandwidth of 1.25, 2.5, 5, 10, or 20 megahertz (MHz), respectively. The system bandwidth can also be divided into sub-bands. For example, a subband can span 1.08 MHz, and there can be 1, 2, 4, 8, or 16 subbands for the system bandwidth of 1.25, 2.5, 5, 10 or 20 MHz , respectively.
    [0042] Figure 2 shows a structure used in LTE. The transmission timeline for the downlink can be divided into units of radio frames. Each radio frame can have a predetermined duration (for example, 10 milliseconds (ms)) and can be divided into 10 subframes, with indexes from 0 to 9. Each subframe can include two partitions. Each radio frame can thus include 20 partitions, with indexes from 0 to 19. Each partition can include L symbol periods, for example, L = 7 symbol periods in a normal cyclic prefix (as shown in FIGURE 2) , or L = 6 symbol periods in an extended cyclic prefix. The 2L symbol periods in each subframe can be assigned indexes from 0 to 2L-1. The available time frequency resources can be divided into resource blocks. Each resource block can cover N subcarriers (for example, 12 subcarriers) in a single partition.
    [0043] In LTE, an eNB can send a primary synchronization signal (PSS) and a secondary synchronization signal (SSS) to each cell in the eNB. The primary and secondary synchronization signals can be sent in symbol periods 5 and 6, respectively, in each of the subframes 0 and 5 of each radio frame with the normal cyclic prefix, as shown in figure 2. The synchronization signals can be be used by UEs for the detection and acquisition of cells. For FDD mode, eNB can send a physical broadcast channel (PBCH) in symbol periods 0 to 3 in partition 1 of subframe 0. The PBCH can carry certain system information.
    [0044] eNB can send a Physical Control Format Indicator Channel (PCFICH) during the symbol period before each subframe, as shown in figure 2. The PCFICH can transmit the number of symbol periods (M) used for the control channels, where M can be equal to 1, 2, or 3, and can be changed from subframe to subframe. M can also be equal to 4, for a small system bandwidth, for example, with less than 10 resource blocks. ENB can send a Physical HARQ Indicator Channel (PHICH) and Physical Downlink Control Channel (PDCCH) in the first M symbol periods of each subframe (not shown in figure 2). The PDCCH and PHICH are also included in the first three symbol periods in the example shown in FIGURE 2. PHICH can carry information to support hybrid automatic retransmission (HARQ). The PDCCH can carry information on uplink and downlink resource allocation for UEs and power control information for uplink channels. ENóB can send a Shared Physical Downlink Channel (PDSCH) for the remaining symbol periods of each subframe. The PDSCH can carry data to UEs programmed for data transmission in the downlink. The various signals and channels in LTE are described in 3GPP TS 36.211, entitled "Evolved Universal Terrestrial Radio Access (E-UTRA); Physical Channels and Modulatio", which is publicly available.
    [0045] eNB can send PSS, SSS, and PBCH in the center 1.08 MHz of the system bandwidth used by eNB. The eNB can send the PCFICH and PHICH for the entire bandwidth of the system, in each symbol period in which these channels are sent. The eNB can send the PDCCH to groups of UEs in certain portions of the system's bandwidth. The eNB can send the PDSCH to specific UEs in specific portions of the system's bandwidth. The eNB can send the PSS, SSS, PBCH, PCFICH and PHICH in a broadcast way to all UEs, it can send the PDCCH in a unicast way to specific UEs, and it can also send the PDSCH in a unicast way to specific UEs.
    [0046] Various resource elements may be available in each symbol period. Each feature element can cover a subcarrier in a symbol period and can be used to send a modulation symbol, which can be a real or complex value. Resource elements not used for a reference signal in each symbol period can be arranged in resource element groups (REGs). Each REG can include four resource elements in a symbol period. The PCFICH can occupy four REGs, which can be spaced approximately uniformly across all frequencies, in the symbol period 0. PHICH can occupy three REGs, which can be distributed in frequency, in one or more configurable symbol periods. For example, the three REGs for PHICH can all belong to the 0 symbol period, or they can be spread over 0, 1, and 2 symbol periods. The PDCCH can occupy 9, 18, 32, or 64 REGs, which can be selected from the available REGs, in the first M symbol periods. Only certain combinations of REGs can be allowed for the PDCCH.
    [0047] A UE can know the specific REGs used for PHICH and PCFICH. The UE can search for different combinations of REGs for the PDCCH. The number of combinations to search for is typically less than the number of combinations allowed for the PDCCH. An eNB can send the PDCCH to the UE in any of the combinations that the UE searches for.
    [0048] Figure 2A shows an exemplary 200A format for the LTE uplink. The resource blocks available for the uplink can be partitioned into a control section and a data section. The control section can be formed at the two edges of the system bandwidth and can be configurable in size. The resource blocks in the control section can be assigned to the UEs for transmitting control information. The data section can include all feature blocks not included in the control section. The design in Figure 2 results in the data section including contiguous subcarriers, which can allow a single UE to be assigned to all contiguous subcarriers in the data section.
    [0049] The UE can be assigned resource blocks in the control section to transmit control information to an eNB. The UE can also be assigned resource blocks in the data section to transmit data to the eNB. The UE can transmit control information on a Physical Uplink Control Channel (PUCCH) 210 in the resource blocks assigned in the control section. The UE can transmit only data or both control and data and data on a shared physical uplink channel (PUSCH) 220 on the resource blocks assigned in the data section. An uplink transmission can cover both partitions of a subframe and can hop through frequency, as shown in Figure 2A.
    [0050] The PSS, SSS, CRS, PBCH, PUCCH and PUSCH in LTE are described in 3 GPP TS 36.211, entitled, "Evolved Universal Terrestrial Radio Access (E-UTRA); Physical Channels and modulation", which is publicly available.
    [0051] An UE can be within the coverage of several eNBs. One of these eNBs can be selected to serve the UE. The service eNB can be selected based on several criteria such as received power, lost path, signal / noise ratio (SNR), etc.
    [0052] A UE can operate in a dominant interference scenario in which the UE can observe high interference from one or more interfering eNBs. A dominant interference scenario may occur due to the restricted association. For example, in Figure 1, UE 120y may be close to the eNB 110y femto and may have received high power for eNB 110y. However, the UE 120y may not be able to access the eNB 110y femto due to the restricted association and can then connect to the eNB 110c macro with lower received power (as shown in Figure 1) or the eNB 110z femto also with less power received (not shown in Figure 1). The UE 120y can then observe high interference from eNB 110y femto in the downlink and can also cause high interference in eNB 110y in the uplink. For certain aspects of this disclosure, UE 120y may receive a semi-persistent programming grant message (SPS) 140 identifying one or more subframes for regular transmissions between UE 120y and macro eNB 110c, where SPS 140 grant information can be determined based on resource partitioning information (RPI), as will be discussed further here.
    [0053] A dominant interference scenario may also occur due to the extension of the range, which is a scenario in which the UE connects to an eNB with less loss of path and low SNR among all eNBs detected by the UE. For example, in Figure 1, UE 120x can detect eNB macro and eNB 110x peak and may have less power received for eNB 110x than for eNB110b. However, it may be desirable for UE 120x to connect to the eNB 110x peak if the loss of travel for eNB 110x is less than the loss of travel for the eNB 110b macro. This can result in less interference on the wireless network for a determined data rate for the UE 120x.
    [0054] In one aspect, communication in a dominant interference scenario can be supported by having different eNBs operating in bands of different frequencies. A frequency range is a frequency range that can be used for communication and can be given by (i) a central frequency and a bandwidth or (ii) a lower frequency and a higher frequency. A frequency band can also be referred to as a band, a frequency channel, etc. Frequency bands for different eNBs can be selected such that the UE can communicate with a weaker eNB in a dominant interference scenario, allowing a strong eNB to communicate with its UEs. An eNB can be classified as a "weak" eNB or a "strong" eNB based on the power received from the eNB in a UE (and not based on the transmission power level of the eNB).
    [0055] Figure 3 shows a block diagram of a project of a base station / eNB, 110 and a UE 120, which can be one of the base stations / eNBs and one of the UEs in Figure 1. For a restricted association scenario , base station 110 can be macro eNB 110c in Figure 1, and UE 120 can be UE 120y. Base station 110 can also be a base station of some other type. The base station 110 can be equipped with T antennas 334a to 334t, and the UE 120 can be equipped with R antennas 352a to 352r, where in general T> 1 and R> 1.
    [0056] At base station 110, a transmission processor 320 can receive data from a data source 312 and control information from a controller / processor 340. The control information can be for PBCH, PCFICH, PHICH, PDCCH, etc. The data can be for the PDSCH, etc. The processor 320 can process (for example, encode and map into symbol) the data and control information to obtain data symbols and control symbols, respectively. Processor 320 can also generate reference symbols, for example, for PSS, SSS, and cell-specific reference signal. The transmission multiple input and multiple output (MIMO) processor (TX) 330 can perform spatial processing (for example, pre-coding) on data symbols, control symbols, and / or reference symbols, when applicable, and can provide output symbol streams for modulators (MODs) 332a to 332t. Each modulator 332 can process a respective stream of output symbols (for example, for OFDM, etc.), to obtain a sample output stream. Each modulator 332 can additionally process (for example, convert to analog, amplify, filter and upwardly convert) the output sample stream to obtain a downlink signal. Downlink signals from modulators 332a to 332t can be transmitted through antennas 334a to 334t, respectively.
    [0057] At UE 120, antennas 352a to 352r can receive downlink signals from base station 110 and can provide received signals to demodulators (DEMODs) 354a to 354r, respectively. Each demodulator 354 can condition (for example, filter, amplify, downwardly convert, and digitize) a respective received signal to obtain input samples. Each demodulator 354 can additionally process the input samples (for example, for OFDM, etc.) to obtain received symbols. A MIMO 356 detector can obtain symbols received from all demodulators 354a through 354r, perform MIMO detection on received symbols, if applicable, and provide detected symbols. A receiving processor 358 can process (e.g., demodulate, deinterleave and decode) the detected symbols, provide decoded data by UE 120 to a 360 data store, and provide decoded control information to a controller / processor 380.
    [0058] In the uplink, in the UE 120, a transmission processor 364 can receive and process data (for example, for the PUSCH) from a data source 362 and the control information (for example, for the PUCCH) a from controller / processor 380. Processor 364 can also generate reference symbols for a reference signal. The symbols from the transmission processor 364 can be pre-encoded by a MIMO TX 366 processor if applicable, further processed by modulators 354a to 354r (for example, for SC-FDM, etc.), and transmitted to the base station 110. At base station 110, uplink signals from UE 120 can be received by antenna 334, processed by demodulators 332, detected by a MIMO detector 336 if applicable, and further processed by a receiving processor 338 to obtain decoded data and control information sent by UE 120. Processor 338 can provide decoded data to a data warehouse 339 and decoded control information to controller / processor 340. Base station 110 can send messages to other base stations, for example, through a 341 interface.
    [0059] Controllers / processors 340 and 380 can direct the operation at base station 110 and UE 120, respectively. The processor 380 and / or other processors and modules in the UE 120 may also execute or direct processes for the techniques described in this document. Memories 342 and 382 can store data and program codes for base station 110 and UE 120, respectively. A 344 programmer can program UEs for data transmission on the downlink and / or uplink. RESOURCE PARTITIONING EXAMPLE
    [0060] According to certain aspects of this disclosure, when a network supports improved interference coordination, base stations can negotiate with each other to coordinate resources in order to reduce / eliminate interference by causing the interfering cell to give up. part of its resources. According to this interference coordination, a UE may be able to access a service cell even with severe interference using resources generated by the interfering cells.
    [0061] For example, a femto cell with a closed access mode (ie, in which only a member of the femto UE can access the cell) in the coverage area of an open macro cell may be able to create a "hole cover ", for the macro cell. By negotiating for the femto cell to produce some of its resources, effectively removing interference, the macro UE under the femto cell coverage area may still be able to access the macro cell serving the UE using these provided resources.
    [0062] In a radio access system using OFDM, such as E-UTRAN, the resources provided can be time-based, frequency-based, or a combination of both. When coordinated resource partitioning is time-based, the interfering cell simply cannot use some of the time domain subframes. When coordinated resource partitioning is frequency-based, interference can produce subcarriers in the frequency domain. When a combination of frequency and time, the interfering cell can produce time and frequency resources.
    [0063] Figure 4 illustrates an example of a scenario where improved inter-cell interference coordination (elCIC) can allow a 120y macro UE supporting elCIC (for example, a Rel-10 macro UE, as shown in figure 4) to access the macro cell 110c, even when the UE macro 120y is experiencing severe interference from the 110y femto cell, as illustrated by a solid radiolink 402. A legacy 120u macro UE (for example, a Rel-8 macro UE, as shown in figure 4) may not be able to access macro cell 110c under severe interference from the femto cell 110y, as illustrated by the broken radiolink 404. A 120v femto UE (for example, a Rel-8 femto UE, as shown in figure 4) may have access to a cell femto 110y, without any interference problems from macro cell 110c.
    [0064] According to certain aspects, networks can support elCIC, where there may be different sets of partitioning information. The first of these series can be referred to as partitioning information for semi-static resources (SRPI). A second of these sets can be referred to as Adaptive resource partitioning (ARPI) information. As the name implies, SRPI does not normally change frequently, and SRPI can be sent to a UE, so that the UE can use the data for the UE's own resource partitioning operations.
    [0065] As an example, resource partitioning can be implemented with a periodicity of 8 ms (8 subframes) or periodicity of 40 ms (40 subframes). According to certain aspects, it can be assumed that frequency division duplexing (FDD) can also be applied in such a way that the frequency resources can also be divided. For downlink communications (for example, from a cell B node to a UE), a partitioning pattern can be mapped to a known subframe (for example, a first subframe of each radio frame that has a value of SFN which is a multiple of an integer N). Such a mapping can be applied in order to determine the resource partitioning information for a specific subframe. As an example, a subframe that is subjected to coordinated resource partitioning (for example, produced by an interfering cell) for the downlink can be identified by an index: IndexSRPI_DL = (SFN * 10 + subframe number) mod 8
    [0066] For the uplink, the SRPI mapping can be moved, for example, by 4 ms. So, an example for uplink can be: IndexSRPI_UL = (SFN * 10 + subframe number + 4) mod 8
    [0067] SRPI can use the following three values for each input • U (Usage): this value indicates that the subframe has been cleared from the dominant interference to be used by this cell (ie, the main interference cells do not use this subframe); • N (unused): this value indicates that the subframe should not be used, and • X (Unknown): this value indicates that the subframe is not statically partitioned.
    [0068] Details of the negotiation of resource usage between base stations are not known to the UE.
    [0069] Another possible set of parameters for SRPI can be the following: • U (Usage): this value indicates that the subframe has been cleared from the dominant interference to be used by this cell (that is, the main interference cells do not use this subframe); • N (not used): this value indicates that the subframe must not be used; • X (unknown): this value indicates that the subframe is not statically partitioned (and details of the negotiation of resource usage between base stations are not known to the UE); and • C (common): this value can indicate that all cells can use this subframe without resource partitioning. This subframe can be subjected to interference, so the base station can choose to use this subframe only for an UE that is not experiencing severe interference.
    [0070] The service cell's SRPI can be transmitted over the air. In E-UTRAN, the SRPI of the service cell can be sent in a main information block (MIB), or one of the system information blocks (SIBS). The default SRPI can be defined based on cell characteristics, for example, macro cell, peak cell (with open access), and femto cells (with closed access). In such a case, encoding the SRPI in the system's overhead message can result in more efficient transmission over air.
    [0071] The base station can also broadcast SRPI from the neighboring cell, in one of the SIBs. For this, SRPI can be sent with its corresponding range of physical cell identities (PIC).
    [0072] ARPI can represent additional resource partitioning information with detailed information for the 'X' sub-frames in SRPI. As mentioned above, detailed information for the 'X' subframes is usually known only for base stations, and an UE does not know. For example, subframe 'X' can be adaptively designated as AU (same meaning as U), as one (same meaning as N), or as AC, which are common subframes where victim and aggressor can transmit.
    [0073] Figures 5 and 6 illustrate examples of SRPI assignment in the scenario with macro and femto cells, in which the resource partitioning is implemented with an 8 ms periodicity. As described above, cells can negotiate with each other to coordinate resources in order to reduce / eliminate interference. For example, illustrated in Figure 5, a subframe of a radio frame can be subject to coordinated resource partitioning, in which the femto cell can produce resources (subframe N 504), allowing a macro EU under the femto cell cover to access the macro cell (subframe U 502). Figure 6 illustrates that, for downlink, a partitioning pattern can be mapped to a subframe 602 of each radio frame. For the uplink, the SRPI mapping is shifted by ms 4 (that is, 4 subframes), in which the femto cell produces resources (subframe N 606), allowing a macro UE under the femto cell cover to access the macro cell ( subframe U 604). SEMIPERSSTANT PROGRAMMING CONCESSIONS IN HETEROGENEOUS NETWORKS
    [0074] Time division multiplexing (TDM) partitioning is one of the inter-cell interference coordination (ICIC) mechanisms considered for heterogeneous network ICIC (HetNet) in a cochannel deployment. For example, in subframes that are pre-allocated to an evolved B node (eNB), neighboring eNBs cannot transmit, therefore, interference experienced by user equipment (UEs) served can be reduced, as described above. TDM resources for traffic can be negotiated between eNBs, allowing for a defined minimum for control procedures.
    [0075] For semi-persistent programming (SPS), resources can be configured semi-statically by higher network layers and can have a periodicity of 10, 20, 32, 40, 64, 80, 128, 160, 320 or 640 ms, where 10 , 20 ms are not compatible with the TDM 8 ms periodicity. Therefore, the UE may miss an SPS opportunity that has been programmed for a subframe that was not usable by the UE (for example, subframe X or N) due to the assigned TDM schedule. Therefore, using SPS concessions with short intervals (for example, for sensitive delayed traffic) on a heterogeneous network with TDM partitioning may require appropriate changes.
    [0076] For some modalities, the SPS grant message can be defined with new configurations, with a periodicity that is an integer multiple of a periodicity of subframes indicated by RPI as usable by the UE (for example, 8 ms and 16 ms ). Therefore, each SPS opportunity can be programmed into a usable subframe, as indicated by RPI.
    [0077] Figure 7 illustrates operations 700 for exchanging scheduled transmissions in a heterogeneous network, according to certain aspects of this disclosure. Operations 700 can be performed, for example, by a service node B to send an SPS grant message.
    [0078] In 702, the service node B can determine resource partitioning information (RPI), having a first periodicity. The RPI may include information that identifies the subframe that is usable and the protected subframe (for example, subframe U) according to the cooperative resource partitioning between service node B and one or more non-service B nodes. The additional RPI may include information that identifies the subframe that is not usable (for example, subframe N) and subframe that is usable but not protected (for example, subframe X).
    [0079] In 703, the service node B can send the RPI to the UE.
    [0080] In 704, the service node B can determine SPS concession information, having a second periodicity, based at least in part, on the IPCR.
    [0081] In 705, the service node B can send the SPS concession information identifying the one or more subframes for scheduled transmissions.
    [0082] In 706, the service node B can exchange programmed transmissions with the UE, according to the SPS grant message.
    [0083] Figure 7A illustrates means 700A, corresponding to operations 700 illustrated in Figure 7. The RPI module 702A of a service node B can determine RPI, having a first periodicity (step 702). The service node B can send the RPI to a UE 701A via the transmitter / receiver module 703A (step 703). The SPS 704A module of the service node B can determine an SPS grant message, having a second periodicity, based at least in part, on the RPI (step 704). Node B can send the SPS grant message to UE 701A through the transmitter / receiver module 703A (step 705). The service node B can then exchange transmissions scheduled with the UE 701A according to the SPS grant message (step 706).
    [0084] Figure 7B illustrates means 700B, illustrating a modality as will be explained below, where, instead of determining the SPS grant information based on the IPC, the RPI 702A module can instead determine the RPI based, at least in part, current SPS concessions.
    [0085] Figure 8 illustrates the 800 operations for exchanging scheduled transmissions in a heterogeneous network, according to certain aspects of this disclosure. Operations 800 can be performed, for example, by a UE to receive an SPS grant message.
    [0086] In 801, the UE can receive RPI, including information that identifies the subframe that is usable by the UE and protected due to the cooperative partitioning of resources between a service B node and one or more non-service B nodes.
    [0087] In 802, the UE can receive an SPS grant message identifying one or more subframes for scheduled transmissions, in which the SPS grant message, having a first periodicity, can be determined based, at least in part, at RPI having a second periodicity.
    [0088] In 803, the UE can schedule a transmission with node B according to the SPS grant message.
    [0089] In 804, the UE can determine whether the transmission is within the usable subframe.
    [0090] In 806, if the transmission is in a usable subframe, the UE can exchange the programmed transmission with the service node B.
    [0091] In 805, if the transmission is not in a usable subframe, the UE can reprogram the transmission based on the IPC, as will be discussed more here.
    [0092] Figure 8A illustrates means 800A, corresponding to operations 800 illustrated in Figure 8. The UE transmitter / receiver module 801A can receive RPI and a SPS grant message from a service node B (steps 801 and 802) . The CPI can be determined based, at least in part, on the SPS grant message, or vice versa. Programmer UE 803A can program an 804A transmission with the service node B, according to the SPS grant message (step 803). If the transmission is in a usable subframe, the UE programmer can exchange the programmed transmission with the service node B through the 801A transmitter / receiver module (step 806). However, if the transmission is not in a usable subframe, the EU Programmer 803A can reprogram the transmission based on the IPC (step 805).
    [0093] For some modalities, SPS opportunities that are programmed for the subframe that is not protected under SRPI (for example, subframes X and / or subframes N) can be ignored. Due to incompatible periodicities between TDM partitioning and SPS opportunities, some subframes programmed with SPS opportunities can be protected and some others cannot be protected. An eNB and UE can agree that only subframe U can be used (ie protected under SRPI), such that if a subframe belonging to an SPS opportunity is in a non-U subframe, a non-U subframe cannot be used. be used. This can maintain SPS DL and SPS UL.
    [0094] In UL SPS, subframes that cannot be used for transmission because they are not protected cannot be counted as "empty transmissions" because of the implied release. However, if a missed SPS UL opportunity has been programmed for a U subframe, the missed opportunity can be counted as an empty transmission. After a number of empty transmissions, SPS opportunities can be released.
    [0095] Figure 9 illustrates an example of SPS opportunities that are scheduled for one or more subframes determined based, at least in part, on an RPI to schedule transmissions between a service node B and the UE, according to certain aspects of this disclosure. The SPS grant message can be received at the UE in subframe U 902. The service node B and the UE can agree that a single subframe U can be protected due to cooperative resource partitioning between the service node B and one or more nodes B for non-service and usable by the UE. Therefore, subframes N 904 belonging to an SPS opportunity cannot be used, but the subsequent subframes U 906 can be used.
    [0096] For some modalities, if the UE receives a PDCCH activation grant in a subframe X, the UE can assume that SPS opportunities programmed for subframe X are dynamically usable (for example, in the AU or AC subframe). In other words, the service eNB can guarantee that subframe X, and periodic repetitions of subframe X (that is, as indicated by the RPI), are dynamically usable. Although the UE may not know detailed information for subframes X, due to resource usage negotiations between base stations (for example, adaptive partitioning), the UE may determine not to skip the unprotected subframe beyond those marked with N. For some modalities, if if a subframe associated with an SPS opportunity is ignored (for example, because it is an N subframe), the UE can use the next U or AU / AC subframe. The AU / AC subframe can be known only if the PDCCH SPS activation grant was received in a non-U subframe, where the UE can know that this specific subframe within the interlacing must be AU or AC. In addition, the UE can assume that, during the current SPS grant period, adaptive partitioning does not change (ie, eNB can guarantee that, if the partitioning changes, the SPS grant can be revoked). If a missed SPS UL opportunity has been programmed for a U or X subframe, the missed opportunity can be counted as an empty transmission.
    [0097] Figure 10 illustrates an example of SPS opportunities that are programmed for one or more specified subframes based, at least in part, on a PDCCH SPS activation grant received in a subframe X 1002, in accordance with certain aspects of this disclosure. The UE can assume that SPS opportunities programmed for subframe X is dynamically usable and can determine not to skip the unprotected subframe beyond those marked with N. Therefore, subframes N 1004 belonging to an SPS opportunity cannot be used. However, the UE can use the following subframe X 1006 (for example, AU / AC subframe), where the UE can know that this specific subframe within the interlacing must be AU or AC.
    [0098] For some modalities, eNB can provide an offset to the UE that can be used by the UE to determine which backup subframe belonging to an SPS opportunity can be used when a subframe is ignored (applicable for SPS DL and UL) . The offset can be included in the downlink control information carrying the SPS grant message, or can be obtained with upper layers. The offset can be provided as a new information element (IE) in the SPS configuration radio control parameter (RRC) parameter, or it can be flagged for the PDCCH activation grant. For example, the displacement demodulation reference signal (DM-RS) field in downlink control information (ICD) 0 format can be considered 000 (3 bits) in an SPS activation lease. For some modalities, 3 bits can be used to encode the displacement, when an SPS activation concession is signaled to a UE Rel-10. However, Re 1-8 UEs may require this field to be 000 to validate the grant.
    [0099] Likewise, an HARQ case number in the format of DCI 1 / 1A and 2 / 2A / 2B can be considered 000 in an SPS activation concession. These 3 bits (4 bits in TDD) can be replaced by the offset when an SPS activation is signaled to a UE Rel-10. Referring to Figure 11, it is assumed that subframes N 1102 belong to an SPS concession, but it is not a subframe U (i.e., subframes N as shown in Figure 11), so this subframe 1102 can be ignored and subframe n + m 1104 can be used in place of subframe no 1102, where m can be the offset specified above (ie m = 4, as shown in Figure 11). Alternatively, referring to Figure 12, the offset may represent an offset from the most recent subframe U 1107 (ie, subframe p), ie if subframe n 1106 is ignored, subframe p + m 1108 can be used, p being the integer maximum such that p is less than or equal to anep mod 8 can denote a subframe U (that is, m = 8, as shown in Figure 12).
    [00100] For some modalities, instead of ignoring SPS opportunities that are programmed for the subframe that is not protected under SRPI (for example, subframes X and / or subframes N), only the reserved subframe (that is, the one where no no transmission is allowed, such as subframes N) can be ignored. In other words, if a subframe that belongs to an SPS opportunity or resides in a subframe U (protected under SRPI) or a subframe X (unknown), it can be used for transmission. ENB can ensure that SPS opportunities are programmed for U and X subframes (eg AU / AC), by properly configuring the SPS period and subframe used for SPS activation, that SPS opportunities can never be in AN or N subframe If a missed SPS UL opportunity has been programmed for a U or X subframe, the missed opportunity can be counted as an empty transmission. After a number of empty transmissions, SPS opportunities can be released.
    [00101] Subframes of different types (for example, protected against unprotected) can have completely different qualities. Traditionally, an SPS concession can provide a single resource allocation and a single modulation and coding scheme (MCS). MCS even used in the subframe of a different quality can reduce performance. For some modalities, the SPS concession may provide two MCS, denoted as clean MCS and unclean MCS. The display of the second MCS can be moved from the display of the first MCS. The clean MCS can be used in a protected subframe (eg U / AU subframe), whereas the uncleaned MCS can be used in any other subframe used for transmissions (eg, AC subframe).
    [00102] In addition, different frequency resources can be assigned, as well as, one for protected subframe and for unprotected subframe. Different amounts of resource blocks (RBs) may be desired in subframes protected from being unprotected. There may be frequency resource partitioning between eNBs of different power classes over unprotected subframe.
    [00103] For some modalities, doubling the information (ie MCS and possibly the allocation of resources) in a concession of SPS DL or UL in PDSCH can be accomplished by sending two different PDCCHs with two temporary radio identifier identities SPS cell network (C-RNTI), for example, in the same consecutive subframe or subframes within a predefined window. Alternatively, the DCI payload can be increased to account for additional fields. For some modalities, the unclean channel quality indicator (CQI) can be equal to the clean CQI minus a delta, where delta can be supplied to the UE through signaling of the upper layer (for example, in the RRC message for configuration of SPS).
    [00104] For some modalities, instead of a clean and unclean MCS, the same MCS can be used, but with different defined points of control power. At least one defined control bridge can be provided by upper layers or in the SPS grant message. In current specifications, RRC parameter p0-UE-PUSCH- persistent can define power control from UL to SPS. Two UL power control parameters for SPS can be used by Rel-10 UEs depending on the type of subframe. Rel-8 UEs can always use the existing parameter only, but Rel-10 UEs can interpret both and can use them accordingly. The existing parameter can represent the average power, while the additional parameter can include a delta.
    [00105] For some modalities, instead of determining an SPS grant message based on the IPC, as described above, RPI can instead be determined based, at least in part, on current SPS grants, as illustrated in Figure 7B. Periodically, or triggered by some specific events (for example, a change in load conditions), an optimization algorithm can be performed which can update resource partitioning vectors for eNBs one or more eNBs (for example, by increasing the resources that aggressor cannot use and, consequently, increasing the protected resources for the victim eNB). The subframe (s) that are exchanged between the eNBs can be determined by the current SPS grants for at least one of the service eNBs and the one or more non-service eNBs. Current SPS concessions may also have an impact on the decision on whether to switch resources or not.
    [00106] Therefore, SPS opportunities can be programmed in subframe U and X (AU / AC). For example, a 20 ms SPS allocation can be considered, where an eNB can provide a PDCCH activation grant in a protected subframe (subframe n). Transmission opportunities in subframe n + 40, n + 80 etc., may lie in protected subframes, such as subframe U (that is, multiples of 8 ms interleaving periodicity). Transmission opportunities in n + 20, n + 60 subframes, etc. they can be in the adaptively assigned subframe (that is, multiples of the SPS period of 20 ms). In other words, when adaptive subframe negotiation between eNBs is performed, a macro eNB may attempt to allocate subframe n + 20, n + 60, etc. like AU or AC. In this way, SPS allocations with a 20 ms period can work perfectly, where the U and X (AU / AC) subframe can be useful. For some modalities, the RPI may remain the same as the previous RPI based, at least in part, on current SPS concessions. Femto eNBs may not achieve this because SPS is useful mainly for macro eNBs, where several connected UEs can be present at the same time. A similar adaptive allocation can be created, for example, for an SPS period of 10 ms.
    [00107] Those skilled in the art would understand that information and signals can be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that can be referenced throughout the above description can be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination of these.
    [00108] Those skilled in the art would additionally appreciate that several illustrative logic blocks, modules, circuits, and algorithm steps described in connection with the present disclosure can be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, several illustrative components, blocks, modules, circuits, and steps have been described above, generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends on the particular application and design limitations imposed on the global system. Those skilled in the art can implement the functionality described in different ways for each particular application, but such execution decisions should not be interpreted as causing a departure from the scope of this disclosure.
    [00109] The various illustrative logic blocks, modules and circuits described in connection with the present disclosure can be implemented or executed with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA) 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 alternatively, 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 in conjunction with a DSP core, or any other such configuration.
    [00110] The steps of a process or algorithm described in connection with the present disclosure can be incorporated directly into hardware, in a software module executed by a processor, or in a combination of the two. A software module can reside in RAM, 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 exemplary 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 an integral part of the processor. The processor and storage medium can reside in an ASIC. The ASIC can reside on a user terminal. Alternatively, the processor and the storage medium can reside as discrete components in a user terminal.
    [00111] In one or more exemplary projects, the functions described can be implemented in hardware, software, firmware, or any combination of these. If implemented in software, functions can be stored in or transmitted via one or more code instructions or in a computer-readable medium. Computer-readable media includes both computer storage media and communication media, including any medium that facilitates the transfer of a computer program from one place to another. The storage media can be any available medium that can be accessed by a general purpose or special purpose computer. By way of example, and not limitation, such computer-readable media may comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that may be used. used to carry or store code elements of the desired program in the form of instructions or data structures and which can be accessed by a general purpose or special purpose computer, or a general purpose or special purpose processor. In addition, any connection is properly called a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source over a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL or wireless technologies such as infrared, radio, and microwave are included in the media definition. Disc and floppy disk, as used here, include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy and blu-ray, where floppy disks generally reproduce data magnetically, while disks reproduce data optically with lasers. Combinations of the above should also be included in the scope of computer-readable media.
    [00112] The previous description of the disclosure is provided to allow anyone skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the description is not intended to be limited to the examples and drawings described here, but should be given the broadest scope consistent with the principles and innovative features disclosed here.
    权利要求:
    Claims (15)
    [0001]
    1. Method for wireless communications, characterized by the fact that it comprises: determining (702) RPI resource partitioning information, having a first periodicity, in which the RPI includes information that identifies subframes that are usable by an EU user equipment and protected due to cooperative resource partitioning between a service Node B and one or more non-service B Nodes; send (705) a semi-persistent SPS programming grant message identifying one or more subframes for scheduled transmissions, in which the SPS grant message, having a second periodicity, is determined based, at least in part, on the RPI; and exchange (706) transmissions scheduled with the UE according to the SPS grant message.
    [0002]
    2. Method, according to claim 1, characterized by the fact that the second periodicity is an integer multiple of the first periodicity.
    [0003]
    3. Method, according to claim 1, characterized by the fact that the programmed transmissions are exchanged in usable subframes, in which the usable subframes include subframes that are not protected.
    [0004]
    4. Method, according to claim 1, characterized by the fact that it further comprises: identifying that a missed uplink SPS opportunity has been programmed for a subframe identified by the RPT as usable by the UE; and determining the uplink SPS opportunity missed as an empty stream for purposes of implicit release based on identification.
    [0005]
    5. Apparatus for wireless communications, characterized by the fact that it comprises: means (702A) to determine (702) RPI resource partitioning information, having a first periodicity, in which the RPI includes information that identifies subframes that are usable by a EU user equipment and protected due to cooperative resource partitioning between a service Node B and one or more non-service Node B; means (703A) for sending (705) a semi-persistent SPS programming grant message, identifying one or more subframes for scheduled transmissions, wherein the SPS grant message, having a second periodicity, is determined based, at least in part , at RPI; and means for exchanging (706) transmissions scheduled with the UE in accordance with the SPS grant message.
    [0006]
    6. Apparatus, according to claim 5, characterized by the fact that the second periodicity is an integer multiple of the first periodicity.
    [0007]
    7. Apparatus according to claim 5, characterized by the fact that the programmed transmissions are exchanged into usable subframes, in which the usable subframes include subframes that are not protected.
    [0008]
    8. Method for wireless communications, characterized by the fact that it comprises: receiving (802) a semi-persistent SPS programming grant message identifying one or more subframes for scheduled transmissions, in which the SPS grant message, having a first periodicity, is determined based, at least in part, on the RPI resource partitioning information, having a second periodicity, in which the RPI includes information that identifies subframes that are usable by an EU user equipment and protected due to cooperative resource partitioning between a service Node B and one or more non-service B Nodes; and exchange (806) transmissions scheduled with Node B according to the SPS grant message.
    [0009]
    9. Method according to claim 8, characterized by the fact that the first periodicity is an integer multiple of the second periodicity.
    [0010]
    10. Method according to claim 8, characterized by the fact that the programmed transmissions are exchanged into usable subframes, in which the usable subframes include subframes that are not protected.
    [0011]
    11. Method according to claim 8, characterized by the fact that it further comprises: identifying that a missed uplink SPS opportunity has been programmed for a subframe identified by RPI as usable by the UE; and determining the uplink SPS opportunity missed as an empty stream for purposes of implicit release based on identification.
    [0012]
    12. Wireless communication device, characterized by the fact that it comprises: means (801A) to receive (801) a semi-persistent SPS programming grant message, identifying one or more subframes for scheduled transmissions, in which the SPS grant message , having a first periodicity, is determined based, at least in part, on the resource partitioning information RPI having a second periodicity, in which RPI includes information that identifies subframes that are usable by an EU user equipment, and protected due to cooperative resource partitioning between a service Node B and one or more non-service B Nodes; and means (803A) to exchange (806) transmissions scheduled with Node B according to the SPS grant message.
    [0013]
    13. Apparatus according to claim 12, characterized by the fact that the first periodicity is an integer multiple of the second periodicity.
    [0014]
    14. Apparatus according to claim 12, characterized by the fact that the programmed transmissions are exchanged into usable subframes, in which the usable subframes include subframes that are not protected.
    [0015]
    15. Memory, characterized by the fact that it comprises instructions stored therein, instructions being executed by a computer to carry out the method as defined in any one of claims 1 to 4 and 8 to 11.
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    同族专利:
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    JP2014197859A|2014-10-16|
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    US9288004B2|2016-03-15|
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    WO2011133708A1|2011-10-27|
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    法律状态:
    2018-12-26| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-04-07| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-12-08| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-03-02| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 20/04/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US32619310P| true| 2010-04-20|2010-04-20|
    US61/326,193|2010-04-20|
    US13/087,170|US8634364B2|2010-04-20|2011-04-14|Semi-persistent scheduling grants in heterogeneous networks|
    US13/087,170|2011-04-14|
    PCT/US2011/033310|WO2011133708A1|2010-04-20|2011-04-20|Semi-persistent scheduling grants in heterogeneous networks|
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