• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    DATA SIGNALING AND CONTROL IN HETEROGENEOUS WIRELESS COMMUNICATION NETWORKS One method in a wireless communication device includes receiving control signaling from a base station in a control region of a carrier on the descending link covering a first bandwidth, receiving a base station signaling message indicating a second bandwidth, receiving a first control message within the control region using a first Downlink Control Information (DCI) format size, the first DCI format size based on the first bandwidth, and receiving a second control message within the control region using a second DCI format size, the second DCI format size based on the second bandwidth, where the second bandwidth is distinct of the first bandwidth and the first and second control messages indicate downlink resource assignments to the downlink carrier.
    公开号:BR112012000662B1
    申请号:R112012000662-2
    申请日:2010-06-08
    公开日:2021-07-06
    发明作者:Ravikiran Nory；Ravi Kuchibhotla；Jialing Liu；Robert T. Love；Ajit Nimbalker；Kenneth A. Stewart
    申请人:Google Technology Holdings LLC；
    IPC主号:
    专利说明:

    CROSS REFERENCE TO APPLICATIONS RELATED
    [0001] The present application is a non-provisional application of United States Provisional Application Number 61/220,556 filed on June 25, 2009, the contents of which are incorporated herein by reference and from which benefits are claimed under the 35 USC 119. REVELATION FIELD
    [0002] The present disclosure relates generally to wireless communication systems and more specifically to the management of interference between the uncoordinated employment of Closed Subscriber Group (CSG) cells or residential Virtual-Nodes Bs within a network wireless base stations or macro Virtual-Nodes Bs. HISTORIC
    [0003] Some wireless communication networks are proprietary while others are employed in accordance with one or more standards and accommodate equipment manufactured by multiple vendors. One of these standards-based networks is the Universal Module Telecommuniations System) UMTS - Universal Mobile Telecommunication System) standardized by the Third Generation Partnership Project (3GPP - Third Generation Partnership Project), which is a collaboration of groups of telecommunication associations that generate globally applicable mobile phone system specifications within the scope of the International Mobile Telecommunications-2000 (International Mobile Telecommunications 2000) project of the International Telecommunication Union (ITU - International Telecommunication Union). Efforts are currently underway to develop an evolved UMTS standard, which is typically referred to as UMTS Long Term Evolution (LTE) or Evolved UMTS Terrestrial Radio Access (E-UTRA).
    [0004] According to Version 8 of the standard or specific LTE or E-UTRA, downlink communication from a base station (referred to as an "Enhanced Node B" or simply "eNB") to a wireless communication device (referred to as “user equipment” or “UE”) use orthogonal frequency division multiplexing (OFDM). In OFDM, orthogonal sub-carriers are modulated with a digital stream, which may include data, control information, or other information, to form a set of OFDM symbols. The sub-carriers may be contiguous or non-contiguous and downlink data modulation may be performed using quadrature phase key shift (QPSK), 16-ary (16QAM) or 64QAM quadrature amplitude modulation. OFDM symbols are configured in a downlink subframe for base station transmission. Each OFDM symbol has a duration of time and is associated with a cyclic prefix (CP). The cyclic prefix is essentially a guard period between successive OFDM symbols in a subframe. According to the E-UTRA specification, a normal cyclic prefix is about five (5) microseconds and an extended cyclic prefix is about 16.67 microseconds. Data from the serving base station is transmitted on the physical downlink shared channel (PDSCH) and control information is signaled on a Physical Downlink Control Channel (PDCCH).
    [0005] In contrast to downlink, uplink communication from UE to eNB uses single carrier frequency division multiple access (SC-FDMA) according to the E-UTRA standard. In SC-FDMA, block transmission of QAM data symbols is performed by a first discrete Fourier transform (DFT) spreading (or precoding) followed by sub-carrier mapping to a conventional OFDM modulator. The use of DFT precoding allows for a moderate/peak-to-average cubic metric power ratio (PAPR) leading to reduced cost, size and power consumption of the UE power amplifier. According to SC-FDMA, each subcarrier used for uplink transmission includes information for all transmitted modulated signals, with the input data stream being spread over them. Data transmission on the uplink is controlled by the eNB, involving the transmission of scheduling grants (and scheduling information) sent through control channels on the downlink. Scheduling allowances for uplink transmissions are provided by the downlink eNB and include, among other things, a resource allocation (for example, resource block size per one millisecond (ms) interval) and the identification of the modulation to be used for uplink transmissions. With the addition of higher order modulation and Adaptive Modulation and Coding (AMC), great spectral efficiency is possible when scheduling users with favorable channel conditions. The UE transmits data on the physical uplink shared channel (PUSCH). Physical control information is transmitted by the UE on the physical uplink control channel (PUCCH).
    [0006] E-UTRA systems also facilitate the use of multiple input and multiple output (MIMO) antenna systems in the downlink to increase capacity. As is known, MIMO antenna systems are employed at the eNB through the use of multiple transmit antennas and at the UE through the use of multiple receive antennas. The UE may rely on a pilot or reference symbol (RS) sent from the eNB for channel estimation, subsequent data demodulation, and link quality measurement for reporting purposes. Feedback link quality measurements may include such spatial parameters as class indicator or the number of data streams sent on the same resources, precoding matrix index (PMI), and encoding parameters such as modulation and coding scheme (MCS) or the channel quality indicator (CQI). For example, if a UE determines that the link can support a class greater than one, it may report multiple CQI values (for example, two CQI values when class=2). In addition, link quality measurements may be reported on a periodic or aperiodic basis, as instructed by an eNB, in one of the supported feedback modes. Reports may include sub-band or broadband frequency selective information from the parameters. The eNB may use the class information, the CQI, and other parameters, such as the quality information in the uplink, to serve the UE in the uplink and downlink channels.
    [0007] In the context of the Version 8 specification of the Long Term Evolution (LTE - Long Term Evolution) system developed by the 3GPP third-generation partnership project based on Orthogonal Frequency Division Multiplexing (OFDM) for downlink transmissions , the eNB-to-UE link typically consists of an integral number of time units (or samples), where the time unit denotes a fundamental reference time duration. For example, in LTE, the time unit corresponds to 1/(15000x2048) seconds. Thus, PDCCH transmissions are a first control region with a fixed start location (contemporarily) in the first OFDM symbol in a subframe. All symbols remaining in a subframe after the PDCCH are typically for data bearer traffic, i.e., PDSCH, designated in multiples of Resource Blocks (RBs). Typically, the RB comprises a set of sub-carriers and a set of OFDM symbols. The smallest resource unit for transmissions is denoted a resource element which is given by the smallest time-frequency resource unit (a subcarrier per an OFDM symbol). For example, an RB may contain 12 sub-carriers (with a 15 kHz sub-carrier separation) with 14 OFDM symbols with some sub-carriers being designated as pilot symbols, etc. Typically, the 1 ms subframe is divided into two grooves, each 0.5 ms. RB is sometimes defined in terms of one or more grooves rather than subframes. According to the Version 8 specification, uplink communication between the UE and the eNB is based on Single Carrier Frequency Division Multiple Access (SC-FDMA), which is also referred to as Discrete Fourier Transform OFDM ( DFT) spread. It is also possible to have non-contiguous uplink allocations by sending uplink control information and uplink data on noncontiguous sub-carriers. A virtual resource block is a resource block whose sub-carriers are distributed (that is, not contiguous) in frequency, while the located RB is an RB whose sub-carriers are contiguous in frequency. Virtual RB may have improved performance due to frequency diversity. Version 8 UEs typically share resources in the frequency domain (i.e., at an RB level or in multiples of an RB) rather than in time in any individual downlink subframe.
    [0008] The PDCCH contains control information about the formats of the downlink control information (DCI) or scheduling messages, which inform the UE of the modulation and coding scheme, transport block size and location, pre information. -encoding, hybrid information-ARQ, UE Identifier, etc., which is needed to decode the data transmissions on the downlink. This control information is protected by channel encoding (typically, a cyclic redundancy check (CRC) code for error detection and convolutional encoding for error correction) and the resulting encoded bits are mapped to the time-frequency resources. For example, in LTE Version 8, these time-frequency resources occupy the first several OFDM symbols in a subframe. A group of four Resource Elements is called a Resource Element Group (REG). Nine REGs comprise a Control Channel Element (CCE). The encoded bits are typically mapped onto 1 CCE, 2 CCEs, 4 CCEs, or 8 CCEs. These four are typically referred to as aggregation levels 1, 2, 4, and 8. The UE looks for the different assumptions (ie assumptions on aggregation level, DCI format size, etc.) when trying to decode the transmission based on allowed settings. This processing is referred to as blind decoding. To limit the number of configurations needed for blind decoding, the number of hypotheses is limited. For example, the UE blind decodes using the initial CCE locations as those allowed for the particular UE. This is done by the so-called UE-specific search space, which is a search space defined for the particular UE (typically configured during the initial establishment of a radio link and also modified using the RRC message). Similarly, a common search space is also defined that is valid for all UEs and can be used to schedule information on broadcast downlink like Paging, or random access response, or other purposes.
    [0009] Control messages are typically encoded using convolutional encoders. The control region includes a Physical Hybrid ARQ indicator channel or the PHICH that is used to transmit hybrid ARQ acknowledgments.
    [00010] Each communication device searches the control region in each subframe for control channels (PDCCHs) with different downlink control indicator (DCI) formats using blind detection, where PDCCH CRC is mixed with either the C-RNTI of the communication device (UEID) whether it is for scheduling data on Shared Channel on Physical Downlink (PDSCH) or Shared Channel on Physical Uplink (PUSCH) or mixed with SI-RNTI, P-RNTI, or RA -RNTI if it is for scheduling broadcast control (system information, paging, or random access response, respectively). Other mixing types include joint power control, semi-persistent scheduling (SPS), and a temporary C-RNTI for use with scheduling some random access messages.
    [00011] A particular user equipment needs to locate the control channel elements corresponding to each PDCCH candidate that it should monitor (blindly decode for each subframe control region). The CRC of each PDCCH will be masked by a unique identifier corresponding to the user equipment that the base unit is trying to schedule. The unique identifier is assigned to the UE by its serving base unit. This identifier is known as the temporary radio network identifier (RNTI) and the one normally assigned to each UE at call admission is the cell RNTI or C-RNTI. The UE may also be designated as a semi-persistent scheduling C-RNTI (SPS C-RNTI) or a temporary C-RNTI (TC-RNTI). When the UE successfully decodes a PDCCH of a particular DCI format type, it will use the control information of the decoded PDCCH to determine, for example, the resource allocation, hybrid ARQ information, and power control information for the transmission of data on the scheduled downlink or on the corresponding uplink. Legacy DCI format type 0 is used to schedule uplink data transmission on the physical uplink shared channel (PUSCH) and DCI format type 1A is used to schedule downlink data transmissions on the shared channel on the physical downlink (PDSCH). Other types of DCI format are also used to schedule PDSCH transmissions including DCI format 1, 1B, 1D, 2, 2A each corresponding to a different transmission mode (eg single antenna transmissions, user open loop MIMO single, multi-user MIMO, single-user closed-loop MIMO, class-1) precoding. In addition, there is legacy DCI 3 and 3A format to schedule the transmission of joint power control information. The format 0, 1A, 3 and 3A PDCCH DCI all have the same payload sizes and thus the same encoding speeds. So only one blind decoding is needed for all of the 0, 1A, 3, 3A per candidate PDCCH. The CRC is then masked with C-RNTI to determine if the PDCCH was format type 0 or 1A and a different RNTI if it is 3 or 3A. Type 0 and 1A format DCI are distinguished by the type DCI bit in the PDCCH payload itself (ie part of the control information in one of the control information fields). The UE is always required to search for all DCI 0.1A formats in each PDCCH candidate site in the UE-specific search spaces. There are four UE-specific search spaces for aggregation levels 1, 2, 4, and 8. Only one of the DCI format types 1, 1B, 1D, 2, or 2A is assigned at a time to the UE such that the UE it only needs to do one additional blind decoding per PDCCH candidate site in the UE-specific search space in addition to the blind decoding required for DCI types 0, 1A. The PDCCH candidate locations are the same for the DCI format types when they are located in the UE-specific search spaces. There are also two CCE common search spaces 16 of aggregation level 4 and 8 respectively that are logically and sometimes physically (when there are 32 or more control channel elements) adjacent to the UE specific search spaces. In the common search spaces the UE monitors the DCI types 0, 1A, 3 and 3A as well as the DCI of type 1C format. Type 1C DCI format is used to schedule broadcast control that includes paging, random access response, and system block data transmissions. DCI 1A can also be used for broadcast control in common search spaces. DCI 0 and 1A are also used to schedule PUSCH and PDSCH in common search spaces. The UE is required to perform up to 4 blind decodings in the L=4 common search space and two blind decodings in the L=8 common search space for DCI formats 0, 1A, 3 and 3A and the same number again for DCI 1C, as DCI 1C is not the same size as DCI 0, 1A, 3 and 3A. The UE is required to perform (6, 6, 2, 2) blind decodings for L= (1, 2, 4, 8) UE specific search spaces respectively where L refers to the aggregation level of the search space. The maximum total number of blind decoding attempts that the UE is then required to perform per subframe control region is therefore 44 (=2x(6,6,2,2)+2x(4,2)) . A "hash" function is used by the serving base unit and the UE to find the PDCCH candidate sites in each search space. The “hash” function is based on the C-RNTI of the UE (or sometimes the TC-RNTI), the aggregation level (L), the total number of CCEs available in the control region (Ncce), the number or index of subframe, and the maximum number of PDCCH candidates for the search space.
    [00012] Residential base stations or femto cells are referred to as Residential eNBs (HeNBs) in the present disclosure. The HeNB can either belong to a closed subscriber group (CSG) or it can be an open access cell. A CSG is a set of one or more cells that allow access to only a certain group of subscribers. HeNB jobs where at least a part of the employed bandwidth (BW) is shared with macro-cells are considered to be high risk scenarios from an interference standpoint. When UEs connected to a macro-cell travel close to a HeNB, the uplink of the HeNB can be severely interfered with, particularly when the HeNB is far (eg >400 m) away from the macro-cell, thus degrading the quality of service of the UEs connected to HeNB. Currently, the existing UE Version 8 measurement framework can be used to identify the situation when this interference might occur and the network can transfer the UE to an inter-frequency carrier that is not shared between macro-cells and HeNBs to mitigate this problem . However, there may not be such carriers available on certain networks to which to transfer the UE. Also, with increasing penetration of HeNBs, being able to efficiently operate HeNBs across the available spectrum may be desirable from a cost perspective.
    [00013] The various aspects, features and advantages of the disclosure will become more fully apparent to those of ordinary skill in the technology upon careful consideration of the following Detailed Description with the accompanying drawings described below. Drawings may have been simplified for clarity and are not necessarily drawn to scale. BRIEF DESCRIPTION OF THE DRAWINGS
    [00014] The accompanying Figures, in which like reference numbers refer to identical or functionally similar elements throughout separate views and which, together with the detailed description below are incorporated and form part of the specification, serve to further illustrate various versions and explaining various principles and advantages all in accordance with one or more versions of the present invention.
    [00015] Figure 1A is a heterogeneous job with an MNB and HeNB and the subframe configuration in the downlink of the carrier transmitted by the MNB and HeNB.
    [00016] Figure 1b shows more details about the subframe structure in uplink and downlink.
    [00017] Figure 2 illustrates the method of shifting HeNB subframes by k=2 symbols with respect to macrocell subframes.
    [00018] Figure 3 illustrates the method of shifting the HeNB subframe by k=16 symbols with respect to the macrocell.
    [00019] Figure 4 illustrates an exemplary sub-carrier structure of 5MGz and 15MHz carriers with raster frequencies separated by multiples of 300 kHz.
    [00020] Figure 5 illustrates an exemplary sub-carrier structure of 5 and 15 MHz DL carriers.
    [00021] Figure 6 illustrates the process for receiving control messages whose DCI format sizes are based on the first and second bandwidths. DETAILED DESCRIPTION
    [00022] In a heterogeneous network comprising macro cells and HeNB cells that have overlapping BW jobs, certain interference problems may arise. One such interference problem is where uplink (UL) transmission from a UE connected to a macro-eNB (MeNB) that is close to (ie, within the signal range of a HeNB) interferes with the UL of a UE connected to the HeNB. This case was identified as interference scenario 3 in 3GPP TR 25,967 “Home Node B Radio Frequency (RF) Requirements (FDD) (Version 9)” on the Universal Terrestrial Radio Access network (UTRA = Universal Terrestrial Radio Access).
    [00023] The severity of the problem can be high when the separation between MeNB and HeNB is large. This is illustrated by some simple calculations as follows. The path loss equation (PL) for typical macrocellular environments (from TR 25,814) used in system evaluations is given by PL (dBrn = dBm) = 128.1 + 37.6log10(R), where R is in kilometers, for a 2GHz carrier frequency. The MUE fixes its UL transmit power based on the SINR requirement of the receiver in the MeNB which is still dependent on the desired PUSCH MCS. From TS 36.213, the UL power control equation can be approximated as PTx,MUE=max{PCMAX,IMeNB + SNRreq,MeNB + PLMeNB-MUE}, where PCMAX is the maximum MUE transmission power allowed by power class, IMeNB is the co-channel interference at the MeNB receiver, SNRreq,MeNB is the SINR required for MUE UL transmission to support the desired MCS level and PLMeNB-MUE is the path loss from MeNB to MUE. Table 1 summarizes the distance dependence of the transmission power PL and MUE with PCMAX = 23 dBm, ImeNB = -98 dBm and SNRreqMeNB = 10 dB.
    Table 1. Dependence of PL and MUE transmission energy on distance
    [00024] From these calculations, the MUE farther than 400 m away from the MeNB starts transmitting at maximum energy under the chosen conditions. For a macro cell with a cell radius of one kilometer, this means roughly 80% of users are transmitting at full power. Therefore, MUE traveling close to a HeNB that serves its users can severely degrade UL productivity in the HeNB, particularly when the MeNB-HeNB separation becomes large (>400 m).
    [00025] Techniques such as uplink adaptive attenuation considered in the UTRA 3GPP TR 25.967 structure will likely be investigated in the LTE context to mitigate this problem. However, this alone may not be enough to achieve the best possible spectral efficiency with heterogeneous jobs. Some methods that can be useful in making HeNB jobs more efficient are discussed below.
    [00026] A coarse geolocation of UEs is possible by limiting either the path loss (PL) of the UE of a HeNB or alternatively by limiting the path loss differential between the HeNB and MeNB. In one version, if the PL (HeNB to UE) is below a predetermined threshold, then the UE is close to the HeNB. In an alternate version, if the difference (PL(MeNB to UE) - PL(HeNB to UE)) exceeds a certain threshold, then the UE is not only close to the HeNB, but it may indicate a significant interference risk for the UL of HeNB. If a macro-cell UE that is far from the macro-cell, but close to a CSG cell transmits with high power, it can cause UL interference in the CSG of the UEs. To determine the path loss from the HeNB to the UE, the UE may read the broadcast system information (SIB) containing information element about the downlink transmit power of the HeNB. Alternatively, it can make some assumptions about the transmission power on the downlink (for example, setting for maximum allowed power per power class of HeNBs employed in the network.
    [00027] Various versions are described below to ensure reliable HeNB downlink control when the residential Digital Node B is close to an eNB macro-cell (MNB) if they are time aligned. Some versions rely on Version 9 UEs to have additional functionality that is similar to a simplified version of carrier aggregation (sub-20MHz and contiguous) although this feature would most likely be employed in LTE Version 9. In this case, separate control channel support it is necessary for the PDCH on a carrier to be able to schedule resources at a bandwidth that exceeds the transmit bandwidth of the PDCCH. In another version, HeNB control regions are time shifted relative to the macrocell control region and the macrocell attenuates or mutes portions of the symbol that overlap them. In a similar way the macro-cell can attenuate RBs that align with the SCH and PBCH of the time-shifted HeNB. Carrier aggregation is not necessarily required in the latter case. Unlike data (PDSCH, PUSCH), there is no HARQ to control channel transmissions that typically need to target a relatively low BLER of 1% or less. Low-power transmit HeNBs in proximity to high-power macro-cells will not have reliable downlink control channels (eg, PDCCH, PHICH, PCFICH, PBCH, SSCH). One way to solve this is to segment the LTE carrier and allow the MNB and HeNB to transmit their control signaling on separate frequency domain resources. For example, if the LTE carrier is 20 MHz, then it would be segmented into 5 MHz and 15 MHz carriers on the downlink with the MNB transmitting its control signaling (PDCCH, PHICH, PCFICH, P-SCH, PBCH) on the 15 MHz carrier and the HeNB transmitting its control signaling on the 5 MHz carrier (see Figure 1a and Figure 1b). Carrier segmentation would avoid any reliability issues on the downlink control channel.
    [00028] In one release, both LTE Version 8 and Version 9 UEs would access the MNB as a 15 MHz carrier and receive control and broadcast signaling from the MNB within 15 MHz. However, in this release the UEs Version 9 may additionally be assigned PDSCH resource on the remaining 5 MHz frequency resources using DCI types corresponding to 20 MHz. For HeNB, both Version 8 and Version 9 UEs would access the HeNB as a 5 MHz carrier while UEs Version 9 may additionally be assigned PDSCH resources in the remaining 15 MHz frequency resource using DCI types corresponding to 20 MHz. In this version, Version 8 UEs would be limited to allocations of 25RBs (when affixed to the HeNB) or 75 RBs (when posted to the MNB). Version 9 UEs could be assigned any portion of the 100 RBs (when pinned to either the MNB or the HeNB).
    [00029] In this version, Version 9 UEs would be signaled by higher layers about monitoring normal DL DCI types corresponding to the bandwidth of the DL carrier (25 RBs if affixed to a 5 MHz carrier or 75 RBs if affixed to a DL carrier 15 MHz) or monitor broadband DL DCI types corresponding to 20 MHz with 100 RBs. Although the wideband DL DCI types correspond to 20 MHz resource allocations, they are still signaled on the PDCCH covering the nominal carrier bandwidth (i.e., 5 or 15 MHz) of the carrier to which the Version 9 UE is affixed . Also, reception of broadband DE DCIs may be limited to specific UE search spaces. Version 9 UEs can still continue to receive normal DCI types in the common search space for PDCCHs that signal broadcast messages. The UE specific search spaces and the common ones are defined in 3GPP TS 36.213.
    [00030] In another version, for the uplink, both Version 8 and Version 9 UEs would monitor UL DCI types corresponding to 20 MHz carrier bandwidth in both HeNB and MNB. The reliability of uplink control signaling can be maintained by using PUCCH backoff (so-called “PUCCH overprovisioning”) for orthogonal PUCCH assignments between the HeNB and MNB carriers. As UL resources are not segmented, UL resource grants can be signaled for both Version 8 and Version 9 UEs using 20 MHz DCI types. This requires Version 8 devices to be tested to ensure they are capable to handle asymmetric DL and UL bandwidths (in this example, DL=5/15 MHz and UL=20 MHz). System DL (DL bandwidth) and UL (UL bandwidth) bandwidths are signaled in MIG and SIB-2 respectively (see TS 36.331). The Rel.8 device would also have frequency backoff between its DL and UL center frequencies. The PBCH and SCH occur at the center of each carrier as defined in Version 8.
    [00031] In a version, the DL bandwidth parameter (DL bandwidth) signaled in the MIB corresponds to the bandwidth at which Version 8 UEs can be assigned resources on the downlink. The information about the widest bandwidth that Version 9 UEs can expect resource assignments on can be signaled through the P-BCH (Physical Broadcast Channel) by using the reserved fields in the MIB (Master Information Block - Information Block) Teacher). This allows Version 9 UEs to configure their receiver for wideband reception (ie, 20 MHz reception) immediately after receiving the P-BCH.
    [00032] In another version, broader bandwidth information can be signaled to Version 9 UEs using other broadcast messages, for example, SIBs (System Information Blocks) or by using dedicated RRC messages (Radio Resource Configuration - Radio Resource Configuration). In this case, Version 8 UEs must initially configure their receiver according to the DL bandwidth parameter signaled in the MIB, that is, the same bandwidth as the Version 8 UEs (for example, 5 MHz or 15 MHz ) and then reconfigure the receiver to receiver of wider bandwidth transmissions (eg 20 MHz) after receiving the appropriate broadcast or RRC message from the base station
    [00033] In one version, subframe time alignment between macro-cell and HeNB/Femto/Relay is supposed to exist. In this release, signaling is supported in Version 9 to indicate BW of DCI format types to allow resource assignment signaling of up to 20 MHz on a PDCCH that spans a lower bandwidth (for example, only 5 MHz or 15 MHz ). Alternatively, in another version, a separate PDCCH on a carrier is allowed to indicate resource allocations on a frequency segment affixed to the carrier with control signaling (eg, 5MHz PDCCH carrier indicates allocations on 15MHz frequency segment) .
    [00034] Another version uses symmetric PUCCH backoff (so-called "PUCCH overprovisioning") to maintain orthogonal PUCCH designations when uplink carriers overlap (eg, both UL carriers are 20 MHz).
    [00035] Another version is based on the HeNB transmission time offset by k symbols (that is, to avoid overlap with the size of the MNB control region k) and uses MNB power reduction or muting in the portion of a symbol ( or symbols) that overlap the HeNB control region (see Figure 2). The MNB could also use power reduction on all RBs (ie, the 25 RBs) that overlap the HeNB control region to improve PDSCH performance for the HeNBs very close to the MNB. The HeNB control region of a single OFDM symbol (n=1) is preferred for PDSCH efficiency which leaves 5 CCEs for HeNB control channels which should be sufficient for HeNB control signaling. Due to the time shift of the HeNB transmissions, the last k symbols of the PDSCH HeNB region would see interference from the macro-cell control region. The PDSCH HeNB overlay with the macro-cell control region could be justified either by (a) doing nothing and using all non-control symbols for the PDSCH, (b) using truncation so that only 14-nk symbols would be used for the PDSCH HeNB or (c) still use 14-n symbols but justify the overlap by selecting MCS. As carrier MNB interference in PDCCH HeNB signals (control region) is being avoided by time offset of carrier MNB it does not need to be segmented. The HeNB carrier can still be targeted.
    [00036] Carrier segmentation for the HeNB can also be avoided (as shown in Figure 3) by allocating the HeNB the integral band of 20 MHz as well, but then an additional single subframe shift (k=16 total symbols ) is needed so that your SCH/PBCH does not overlap that of the macro-cell. Then the macrocell would mute or mute its PDSCH symbols overlaying the HeNB control region and also mute/mute RBs that overlap the PBCH/SCH of the HeNB. HeNB RRM measurements are conducted as normal.
    [00037] Table 2 below summarizes the different control reliability techniques being considered in this document.
    [00038] In this version, the HeNB is supposed to be time-aligned with the macro-cell. Shift the subframe on the downlink HeNB by k symbols relative to the subframe on the downlink of the macrocell so that there is no overlap in their control regions. The macro-cell attenuates or mutes symbols in its PDSCH region that overlaps the HeNB control region. The macro-cell attenuates or mutes PRBs in the PDSCH region that overlaps the SCH or PBCH. Table 2 - Control Reliability Techniques for Homogeneous Jobs
    n - size of MNB control region (preferably n<3) 1 if carrier aggregation then symbol muting is mandatory to maintain HeNB control region orthogonality 2 * if carrier aggregation then MNB does not allocate overlapping RBs in PBCH/SCH of HeNB 3 ** Muting by MNB for symbol portions of PDSCH RBs overlapping HeNB III control region depends on PDCCH repetition assuming fixed control region size of 3 symbols (preferably also for MNB) IV - MNB should not schedule RBs overlapping HeNB PBCH/SCH - this requires coordination
    [00039] In another version, time offset to avoid control alignment between MNB and HeNB is not done. Instead, the HeNB repeats each PDCCH in its control region (or uses additional CCEs) and always uses the largest PCFICH (for example, n=3) that could be signaled to Version 9 UEs through the SIB. If HeNB has the same bandwidth as the MNB then full subframe offset (k=13) is needed so that HeNB transmissions from PBCH and SCH do not overlap with MNB transmissions from its PBCH and SCH. Additionally, the MNB can attenuate or mute RBs of the PDSCH that overlap the PBCH/SCH of the HeNB. The MNB can also attenuate or mute transmissions in some portions of its control region. Alternatively, a set of CCEs from the MNB can be blocked from use to reduce interference in a relatively small number of CCEs from the HeNB (n=1 size of the HeNB control region is then possible. The small number of CCEs should be adequate for the HeNB schedule (See Appendix A for more details).
    [00040] In one version, carriers are overlapped and the system relies on PDCCH repetition or increasing #CCEs/PDCCH to support PDCCH coverage. the version uses 1 subframe offset so that the PBCH and SCH of the HeNB do not overlap with that of the MNB. The MNB can attenuate/mute RBs that overlap the PBCH/SCH of the HeNB as well as portions of its control region.
    [00041] In another version, a set of MNB CCEs can be blocked from use which would reduce interference in a relatively small number of HeNB CCEs (n=1 size of the HeNB control region is then possible). It is assumed that a small number of CCEs should be adequate for the HeNB schedule.
    [00042] If it were possible to choose PCIDs from HeNB, then a PCID could be chosen so that the REG CCE locations of the HeNB were as close as possible to those of the MNB. So separate CCE groups could be defined with one group allocated to the HeNB and the other to the MNB thus reducing interference for the HeNB CCEs. Instead, a small number of CCEs (eg 5 CCEs which is the number of CCEs available in the case of the 5 MHz carrier for the control region size of 1 OFDM symbol (n=1) given 2 or more antennas transmission) can be chosen for the HeNB with REG locations that are closely aligned with REG locations from a set of CCEs in the MNB such that the set of CCEs (which can be greater than 5) are not used or rarely used by the MNB ( that is, CCEs are in the MNB's locked CCE pool). In this case, it is not necessary to select a specific HeNB PCID, but h HeNB would need to know the MNB PCID so that it could use it and its own PCID to determine the MNB blocked CCE pool which it would then signal to the MNB. HeNB would also know which CCEs it could allocate (in this case, all 5 CCEs would all be in its HeNB CCE Allocation set). In this case, the 5 CCEs of the HeNB CCE allocation set cover the HeNB UE-specific and common search spaces. If not (eg n>1 and/or BW>5MHz) then some CCEs (eg 4) in the HeNB common search space and some (eg 4) in the HeNB UE specific search spaces would be selected for their HNB CCE allocation set and based on these the MNB CCE blocked set would be determined. Based on their respective CCE sets, the HeNB and MNB would not assign certain UEIDs to their respective served UEs if they cause “hash”ing for locked CCEs (or in the case of the HeNB map for CCEs not in the HNB's CCE allocation set ). The number of blocked UEIDs would be much smaller for the MNB given its control region is 3 OFDM symbols (n=3).
    [00043] In another version, common reference symbols (CRSs) for macro-cell and HeNB can be configured to use different CRS frequency offsets to avoid integral alignment which can help with HeNB channel estimation. Note that choosing the guard band appropriately through raster frequency selection is another way to shift the Common RSs from different bands to control the degree of overlap (see Figure 5). If the HeNB and macro-cell are not aligned in subframe time then CRS overlap need not be faced. The UE Version 9 served by the HeNB can match speed around the macro-cell CRS RE locations.
    [00044] In this version, reference symbols are shifted using an existing PCID method and/or by selecting “raster” carrier frequencies to improve the channel estimation of HeNB/Femto/Relay transmissions. CRS power boost is also possible.
    [00045] The DC sub-carriers of the MNB DL carrier (15 MHz for Version 8) and the HeNB LD carrier (5 MHz for Version 8) must be in the 100 kHz raster locations to be accessible to the Version UEs 8 (for example, see Figure 4). Version 9 UEs would still only need a single FFT to demodulate transmissions to resource allocations spanning 20 MHz by shifting its center frequency to a frequency corresponding to 20 MHz. For example, in Figure 5 the Version 9 UE would first camp in the raster ” of 5 MHz or 15 MHz would then shift its center frequency to the “raster” frequency of the 20 MHz carrier. Figure 5 also shows two possible “raster” selections for the 5 and 15 MHz carriers. A selection of “ raster” results in 1 sub-carrier overlap for the 5 and 15 MHz carriers and the other results in a guard interval of 59 sub-carriers which would tend to mitigate any adjacent carrier interference (ACI). the guard band between 5 and 15 MHz carrier is eliminated (1 sub-carrier overlap due to extra DC) so that the 20 MHz band used by Version 9 UEs completely includes 5 and 15 MHz carrier RBs .Port interference now adjacent (ACI) is higher in this case compared to using a guard band (e.g. sub-carrier guard band 59). ACI mitigation is lost if the guardband is cannibalized for more RBs for the Version 9 UE allocations.
    [00046] Although the present disclosure and the best modes of it have been described in such a way as to establish ownership and allow those of ordinary ability to make and use it, it will be understood and appreciated that there are equivalents to the exemplary versions disclosed herein and what modifications and variations may be made in them without deviating from the scope and spirit of the invention, which are to be limited not by exemplary versions but by embodiments.
    权利要求:
    Claims (22)
    [0001]
    1. Method in a wireless communication device, characterized in that it comprises the steps of: receiving, in the device, control signaling from a wireless base station in a control region of a downlink carrier, the control region spanning a first bandwidth, a first control message within the control region using a first Downlink Control Information (DCI) format size, the first DCI format size based on first bandwidth; receiving, at the device, a signaling message from the base station indicating a second bandwidth, a second control message within the control region using a second DCI format size, the second DCI format size based on the second bandwidth, wherein the second bandwidth is distinct from the first bandwidth, and the first and second control messages indicate downlink resource assignments for the downlink carrier.
    [0002]
    2. Method according to claim 1, characterized in that the signaling message from the base station is a broadcast message.
    [0003]
    3. Method according to claim 1, characterized in that the signaling message is a message dedicated to the Radio Resource Configuration (RRC)).
    [0004]
    4. Method according to claim 1, characterized in that the first control message is a broadcast message and the second control message is a dedicated message addressed to the wireless communication device.
    [0005]
    5. Method according to claim 1, characterized in that the first control message is received in a common search space within the control region, the second control message is received within a specific search space of the wireless communication device within the control region, wherein the wireless communication device-specific search space is based on an identifier specific to a wireless communication device.
    [0006]
    6. Method according to claim 1, characterized in that the first control message is a Physical Downlink Control Channel (PDCCH) message and the second control message is a PDCCH message.
    [0007]
    7. Method according to claim 1, characterized in that the first bandwidth and the second bandwidth share at least one sub-carrier.
    [0008]
    8. Method according to claim 1, characterized in that the wireless communication device is configured to receive signals in the first bandwidth and in the second bandwidth.
    [0009]
    9. Method according to claim 1, characterized in that the second bandwidth includes the first bandwidth.
    [0010]
    10. Method according to claim 1, characterized in that the wireless communication device has a 20 MHz receiver.
    [0011]
    11. Method according to claim 1, characterized in that the first control message and the second control message are received in the same subframe.
    [0012]
    12. Wireless communication device characterized in that it comprises: a transceiver configured to receive control signaling from a wireless base station in a control region of a downlink carrier, the control region encompassing a first bandwidth; the transceiver configured to receive a signaling message from the wireless base station indicating a second bandwidth; a processor coupled to the transceiver; the processor configured to decode a first control message within the control region using a first Downlink Control Information (DCI) format size, the first DCI format size based on the first bandwidth, the configured processor to decode a second control message within the control region using a second DCI format size, the second DCI format size based on the second bandwidth; wherein the second bandwidth is distinct from the first bandwidth, and the first and second control messages indicate downlink resource assignments for the downlink carrier.
    [0013]
    13. Device according to claim 12, characterized in that the signaling message is a broadcast message.
    [0014]
    14. Device according to claim 12, characterized in that the signaling message is a message dedicated to the Configuration of Radio Resources (RRC).
    [0015]
    15. Device according to claim 12, characterized in that the first control message is a broadcast message and the second control message is a message dedicated to the wireless communication device.
    [0016]
    16. Device according to claim 12, characterized in that the first control message is received in a common search space within the control region, the second control message is received within a dedicated search space within of the control region, where the dedicated search space is based on a specific identifier of the wireless communication device.
    [0017]
    17. Device according to claim 12, characterized in that the first control message is a Physical Downlink Control Channel (PDCCH) message and the second control message is a PDCCH message.
    [0018]
    18. Device according to claim 12, characterized in that the first bandwidth and the second bandwidth share at least one sub-carrier.
    [0019]
    19. Device according to claim 12, characterized in that the device is configured to receive signals in the first bandwidth and in the second bandwidth.
    [0020]
    20. Device according to claim 12, characterized in that the second bandwidth includes the first bandwidth.
    [0021]
    21. Device according to claim 12, characterized in that the transceiver has a 20 MHz receiver.
    [0022]
    22. Device according to claim 12, characterized in that the first control message and the second control message are received in the same subframe.
    类似技术:
    公开号 | 公开日 | 专利标题
    BR112012000662B1|2021-07-06|method in a wireless communication device and wireless communication device for data signaling and control in heterogeneous wireless communication networks
    JP6077160B2|2017-02-08|Method and apparatus for transmitting power headroom report in a communication system supporting multi-carrier
    US20210083811A1|2021-03-18|Acknowledgement / negative acknowledgement feedback for tdd
    JP2020162154A|2020-10-01|Terminal
    CN105850192B|2020-01-14|Terminal device, base station device, and method
    US9276710B2|2016-03-01|Method and apparatus for resource allocation with carrier extension
    US8780833B2|2014-07-15|Control channel monitoring apparatus in multi-carrier system and method thereof
    US20110064042A1|2011-03-17|Method and apparatus for transmitting data in multiple carrier system
    EP2767026B1|2018-11-14|Extension carrier as a bandwidth extension
    KR102040616B1|2019-11-05|Method of allocating a resource in a wireless communication system and device for same
    US20130114419A1|2013-05-09|Resource management for enhanced pdcch
    WO2015060433A1|2015-04-30|Terminal apparatus, base station apparatus, method in terminal apparatus, and method in base station apparatus
    WO2015141770A1|2015-09-24|Terminal apparatus, base station apparatus and method
    BR112019004556A2|2020-02-11|TECHNIQUES TO ALLOCATE RESOURCES IN LOW LATENCY WIRELESS COMMUNICATIONS
    WO2015129578A1|2015-09-03|Terminal device, base station device, and method
    JP6306859B2|2018-04-04|Terminal apparatus, base station apparatus, and communication method
    同族专利:
    公开号 | 公开日
    US20100331030A1|2010-12-30|
    JP2012531810A|2012-12-10|
    US9345021B2|2016-05-17|
    US8340676B2|2012-12-25|
    CN104038329A|2014-09-10|
    RU2012102387A|2013-07-27|
    CN104038329B|2018-10-02|
    BR112012000662A2|2016-11-16|
    KR20130121191A|2013-11-05|
    JP2014075823A|2014-04-24|
    EP2446575A2|2012-05-02|
    US20130188505A1|2013-07-25|
    JP5472663B2|2014-04-16|
    RU2539327C2|2015-01-20|
    WO2010151424A2|2010-12-29|
    EP2648359A2|2013-10-09|
    CN102461053A|2012-05-16|
    CN102461053B|2015-05-13|
    EP2648359A3|2013-11-13|
    MX2011013413A|2012-02-21|
    KR20120026103A|2012-03-16|
    WO2010151424A3|2011-02-24|
    JP5717152B2|2015-05-13|
    KR20130121190A|2013-11-05|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2358385C2|2004-03-16|2009-06-10|Нокиа Корпорейшн|Method, device and system for duplex communication|
    US8054787B2|2006-10-20|2011-11-08|Stmicroelectronics, Inc.|Apparatus and method for enhanced adaptive channel selection and subframe allocation in a communication system|
    CN101222260A|2007-01-09|2008-07-16|北京三星通信技术研究有限公司|Device and method for transmitting control signaling|
    US8072918B2|2007-04-03|2011-12-06|Texas Instruments Incorporated|Network-based inter-cell power control for multi-channel wireless networks|
    JP5152472B2|2007-04-28|2013-02-27|日本電気株式会社|Resource allocation control method and apparatus in radio communication system|
    CN101370226B|2007-08-17|2012-08-08|华为技术有限公司|Method and customer equipment for measuring and reading control signal channel|
    CN101374340B|2007-08-23|2012-02-29|中兴通讯股份有限公司|Method and apparatus for interleaving and de-interleaving district interference synergic control channel|
    WO2009037854A1|2007-09-21|2009-03-26|Panasonic Corporation|Radio resource management device, radio communication base station device, and radio resource management method|
    KR101448309B1|2007-09-28|2014-10-08|엘지전자 주식회사|Method of monitoring downlink control channel in wireless communication system|
    CN101809897B|2007-09-28|2013-07-31|Lg电子株式会社|Method for detecting control information in wireless communication system|
    US8483107B2|2008-03-16|2013-07-09|Lg Electronics Inc.|Method and apparatus for acquiring resource allocation of control channel|
    KR100913473B1|2008-03-20|2009-08-25|엘지전자 주식회사|Method for monitoring pdcch in wireless communication|
    CN102047726B|2008-04-22|2014-07-30|诺基亚公司|Grouping of cells for efficient neighbor cell information distribution|
    US8509161B2|2008-08-11|2013-08-13|Sharp Kabushiki Kaisha|Systems and methods for OFDMA and SC-FDMA switching|US9622190B2|2006-07-25|2017-04-11|Google Technology Holdings LLC|Spectrum emission level variation in schedulable wireless communication terminal|
    US20080025254A1|2006-07-25|2008-01-31|Motorola Inc|Spectrum emission level variation in schedulable wireless communication terminal|
    KR101273610B1|2008-08-08|2013-06-11|노키아 지멘스 네트웍스 오와이|Fine-grain and backward-compliant resource allocation|
    KR101611295B1|2009-02-18|2016-04-11|엘지전자 주식회사|The method for receiving control information and control information signaling and mobile station apparatus using the same method|
    US9106378B2|2009-06-10|2015-08-11|Qualcomm Incorporated|Systems, apparatus and methods for communicating downlink information|
    US8270977B2|2009-06-19|2012-09-18|Futurewei Technologies, Inc.|System and method for temporarily reconfiguring a communications system to provide selected services|
    KR101591829B1|2009-07-17|2016-02-04|엘지전자 주식회사|Method of transmitting and receiving channel bandwidth information in a wireless communication system|
    US8761094B2|2009-07-22|2014-06-24|Qualcomm Incorporated|Method and apparatus that facilitates interference cancellation for control channels in heterogenous networks|
    US9144037B2|2009-08-11|2015-09-22|Qualcomm Incorporated|Interference mitigation by puncturing transmission of interfering cells|
    US8194603B2|2009-08-18|2012-06-05|Motorola Mobility, Inc.|Subframe component reduction and notification in a heterogeneous wireless communication system|
    CN102026375B|2009-09-11|2013-10-23|中国移动通信集团公司|Method, system and apparatus for system information transmission|
    US9277566B2|2009-09-14|2016-03-01|Qualcomm Incorporated|Cross-subframe control channel design|
    US8942192B2|2009-09-15|2015-01-27|Qualcomm Incorporated|Methods and apparatus for subframe interlacing in heterogeneous networks|
    RU2012108871A|2009-09-18|2013-09-20|Сони Корпорейшн|RELAY STATION, METHOD OF RELAY AND WIRELESS COMMUNICATION DEVICE|
    US9236992B2|2009-09-18|2016-01-12|Lg Electronics Inc.|Method and apparatus for transceiving scheduling signals in a multi-carrier wireless communication system|
    CN102549944B|2009-09-28|2014-11-26|三星电子株式会社|Extending physical downlink control channels|
    US9949261B2|2009-10-15|2018-04-17|Qualcomm Incorporated|Method and apparatus for conveying resource assignment for multiple system bandwidths|
    US8891459B2|2009-11-02|2014-11-18|Qualcomm Incorporated|Spectrum interpretation in a heterogenous network|
    US20110105135A1|2009-11-03|2011-05-05|Motorola-Mobility, Inc.|Interference coordination in heterogeneous networks using wireless terminals as relays|
    JP5395641B2|2009-11-30|2014-01-22|シャープ株式会社|COMMUNICATION SYSTEM, MOBILE STATION DEVICE, BASE STATION DEVICE, AND PROCESSING METHOD|
    US8897235B2|2009-12-18|2014-11-25|Qualcomm Incorporated|Protection of broadcast signals in heterogeneous networks|
    KR101754970B1|2010-01-12|2017-07-06|삼성전자주식회사|DEVICE AND METHOD FOR COMMUNCATING CSI-RS IN WIRELESS COMMUNICATION SYSTEM|
    WO2011093644A2|2010-01-26|2011-08-04|Lg Electronics Inc.|Method and apparatus for allocating resources in a wireless communication system|
    US10389479B2|2010-01-29|2019-08-20|Qualcomm Incorporated|Method and apparatus for signaling expansion and backward compatibility preservation in wireless communication systems|
    US8917614B2|2010-02-05|2014-12-23|Qualcomm Incorporated|Resource allocation and transmission for coordinated multi-point transmission|
    JP4862086B2|2010-03-04|2012-01-25|シャープ株式会社|Wireless communication system, base station apparatus, mobile station apparatus, wireless communication method, and integrated circuit|
    US9226288B2|2010-04-13|2015-12-29|Qualcomm Incorporated|Method and apparatus for supporting communications in a heterogeneous network|
    US9271167B2|2010-04-13|2016-02-23|Qualcomm Incorporated|Determination of radio link failure with enhanced interference coordination and cancellation|
    US9392608B2|2010-04-13|2016-07-12|Qualcomm Incorporated|Resource partitioning information for enhanced interference coordination|
    US9125072B2|2010-04-13|2015-09-01|Qualcomm Incorporated|Heterogeneous networkuser equipmentradio resource managementmeasurements|
    US8483156B2|2010-05-03|2013-07-09|Nokia Siemens Networks Oy|Feedback for inter-radio access technology carrier aggregation|
    JP4928621B2|2010-05-27|2012-05-09|シャープ株式会社|Wireless communication system, base station apparatus, mobile station apparatus, wireless communication method, and integrated circuit|
    US20130121278A1|2010-06-01|2013-05-16|Lg Electronics Inc.|Method and apparatus for allocating resources in a wireless communication system|
    KR101468767B1|2010-06-08|2014-12-08|한국전자통신연구원|Method and apparatus for transmission and reception in multi-carrier wireless communication systems|
    US20110317624A1|2010-06-23|2011-12-29|Qualcomm Incorporated|Methods of control/data partition scheme in heterogeneous networks for lte-a|
    CN101902301B|2010-08-12|2018-11-20|中兴通讯股份有限公司|Upstream control signaling sends, the bearing method and device of uplink demodulation reference signal|
    KR20120018266A|2010-08-20|2012-03-02|삼성전자주식회사|Method and apparatus for controlling power amplifier consumption power of base station in wireless communication system using orthogonal frequency division multiple access|
    US9185711B2|2010-09-14|2015-11-10|Qualcomm Incorporated|Method and apparatus for mitigating relay interference|
    KR20130096736A|2010-09-28|2013-08-30|후지쯔 가부시끼가이샤|Micro base station, micro base station interference coordination method, and user terminal|
    US8886190B2|2010-10-08|2014-11-11|Qualcomm Incorporated|Method and apparatus for measuring cells in the presence of interference|
    CN105846945A|2010-12-02|2016-08-10|交互数字专利控股公司|Wireless device and method executed by the wireless devcie|
    US8711790B2|2011-02-11|2014-04-29|Nokia Corporation|DL control channel structure enhancement|
    WO2012115361A2|2011-02-21|2012-08-30|엘지전자 주식회사|Method for setting search space for relay node in wireless communication system and device therefor|
    JP5444275B2|2011-02-28|2014-03-19|株式会社Ｎｔｔドコモ|Base station apparatus and communication control method|
    US9565655B2|2011-04-13|2017-02-07|Google Technology Holdings LLC|Method and apparatus to detect the transmission bandwidth configuration of a channel in connection with reducing interference between channels in wireless communication systems|
    US8934500B2|2011-04-13|2015-01-13|Motorola Mobility Llc|Method and apparatus using two radio access technologies for scheduling resources in wireless communication systems|
    US8478190B2|2011-05-02|2013-07-02|Motorola Mobility Llc|Multi-cell coordinated transmissions in wireless communication network|
    JP5396427B2|2011-05-02|2014-01-22|株式会社Ｎｔｔドコモ|Radio base station apparatus, user terminal apparatus, radio communication system, and radio communication method|
    JP5432210B2|2011-05-02|2014-03-05|株式会社Ｎｔｔドコモ|User terminal, radio base station, downlink control channel receiving method, and mobile communication system|
    CN103503349B|2011-05-03|2017-02-22|Lg电子株式会社|Method for transmitting control information in wireless communication system and device therefor|
    WO2012150821A2|2011-05-03|2012-11-08|엘지전자 주식회사|Method for receiving downlink signal and user device, and method for transmitting downlink signal and base station|
    CN103650397B|2011-05-04|2017-04-19|英派尔科技开发有限公司|relay and hierarchical transmission scheme|
    WO2012151739A1|2011-05-09|2012-11-15|Empire Technology Development Llc|Power control of control channels in an lte system|
    KR102040614B1|2011-05-10|2019-11-05|엘지전자 주식회사|Method for transmitting signal using plurality of antenna ports and transmission end apparatus for same|
    US8885560B2|2011-06-27|2014-11-11|Telefonaktiebolaget L M Ericsson |Cellular communication system support for limited bandwidth communication devices|
    US9544790B2|2011-06-28|2017-01-10|Lg Electronics Inc.|Method for monitoring downlink control informationand a user equipment using the same|
    US8879667B2|2011-07-01|2014-11-04|Intel Corporation|Layer shifting in open loop multiple-input, multiple-output communications|
    US20150296542A1|2011-08-11|2015-10-15|Blackberry Limited|Performing random access in carrier aggregation|
    KR102087608B1|2011-08-11|2020-03-13|삼성전자주식회사|Appratus and method for extension of physical downlink control channels in a communication system|
    US9252918B2|2011-08-15|2016-02-02|Google Technology Holdings LLC|Method and apparatus for control channel transmission and reception|
    US9197387B2|2011-08-15|2015-11-24|Google Technology Holdings LLC|Method and apparatus for control channel transmission and reception|
    US8917679B2|2011-08-16|2014-12-23|Nokia Corporation|Method for signaling the overlap of downlink control and data channels|
    IN2014CN02924A|2011-09-27|2015-07-03|Nec Corp|
    WO2013046375A1|2011-09-28|2013-04-04|富士通株式会社|Wireless signal transmission method, wireless signal transmission device, wireless signal reception device, wireless base station device, and wireless terminal device|
    CN107104776B|2011-09-30|2021-02-12|三星电子株式会社|Method for transmitting and receiving data, receiver and transmitter|
    US8948111B2|2011-10-03|2015-02-03|Qualcomm Incorporated|Uplink resource management under coordinated multipoint transmission|
    JP5703398B2|2011-10-18|2015-04-15|エルジー エレクトロニクス インコーポレイティド|Primary cell indication method and apparatus for demodulating control channel|
    US11239971B2|2011-11-03|2022-02-01|Texas Instruments Incorporated|Method and apparatus with enhanced control messages and search space|
    WO2013066100A1|2011-11-03|2013-05-10|엘지전자 주식회사|Method for transreceiving downlink control information in wireless access system and apparatus for same|
    CN105846984B|2011-11-04|2019-04-23|华为技术有限公司|Send and receive method, user equipment and the base station of control channel|
    CN104968056B|2011-11-07|2019-03-01|华为技术有限公司|Control information transferring method|
    WO2013086410A2|2011-12-08|2013-06-13|Interdigital Patent Holdings, Inc.|High-rate dual-band cellular communications|
    US9154979B2|2011-12-14|2015-10-06|Ixia|Scalable architecture for long term evolutionmultiple user equipmentsimulation|
    WO2013089344A1|2011-12-15|2013-06-20|Lg Electronics Inc.|Method for reducing interference of user equipment in wireless access system, and the user equipment for the same|
    GB2497743B|2011-12-19|2017-09-27|Sca Ipla Holdings Inc|Telecommunications systems and methods|
    US9204325B2|2011-12-20|2015-12-01|Ixia|Methods, systems, and computer readable media for reducing the impact of false downlink control informationdetection in long term evolutionphysical downlink control channeldata|
    US9071995B2|2012-01-17|2015-06-30|Ixia|Methods, systems, and computer readable media for long term evolutionuplink data processing|
    US8908535B2|2012-02-10|2014-12-09|Ixia|Methods, traffic simulators, and computer readable media for validating long term evolutioncode blocks and transport blocks|
    JP5851583B2|2012-02-29|2016-02-03|京セラ株式会社|Mobile communication system, mobile communication method, radio base station, and radio terminal|
    US9924498B2|2012-03-12|2018-03-20|Qualcomm Incorporated|Selecting a cell identifier based on a downlink control information|
    KR101645710B1|2012-03-21|2016-08-04|후지쯔 가부시끼가이샤|Wireless communications system, wireless station, and wireless communications method|
    US9131000B2|2012-04-13|2015-09-08|Ixia|Methods, systems, and computer readable media for heuristics-based adaptive protocol parsing|
    US8989112B2|2012-04-27|2015-03-24|Nokia Siemens Networks Oy|eICIC carrier aggregation using extension carriers|
    KR102021590B1|2012-06-04|2019-09-18|삼성전자주식회사|Method and apparatus for transmitting and receiving control nformation in a wireless communication system|
    JP5850573B2|2012-07-23|2016-02-03|シャープ株式会社|Terminal device, base station device, communication method, and integrated circuit|
    US9357417B2|2012-08-17|2016-05-31|Telefonaktiebolaget L M Ericsson|Methods, systems and devices for obtaining system information in a wireless network|
    US20140064135A1|2012-08-28|2014-03-06|Texas Instruments Incorporated|Reception of Downlink Data for Coordinated Multi-Point Transmission in the Event of Fall-Back|
    JP6152253B2|2012-08-29|2017-06-21|株式会社Ｎｔｔドコモ|Wireless base station|
    US8923880B2|2012-09-28|2014-12-30|Intel Corporation|Selective joinder of user equipment with wireless cell|
    US8937882B2|2012-10-26|2015-01-20|Ixia|Methods, systems, and computer readable media for automatically decoding uplink data|
    US9307521B2|2012-11-01|2016-04-05|Samsung Electronics Co., Ltd.|Transmission scheme and quasi co-location assumption of antenna ports for PDSCH of transmission mode 10 for LTE advanced|
    JP6263782B2|2012-11-01|2018-01-24|シャープ株式会社|Mobile station apparatus, base station apparatus, communication method, and integrated circuit|
    US8929294B2|2012-11-20|2015-01-06|Ixia|Methods, systems, and computer readable media for rapid decoding of wireless communications network uplink data|
    US9167603B2|2012-12-19|2015-10-20|Fujitsu Limited|System and method for optimized access messaging in a wireless network|
    CN109547184A|2013-02-28|2019-03-29|华为技术有限公司|Communication means and device|
    US9198065B2|2013-03-15|2015-11-24|Ixia|Methods, systems, and computer readable media for utilizing adaptive symbol processing in a multiple user equipmentsimulator|
    CN105165094B|2013-04-03|2019-02-05|寰发股份有限公司|Obtain the method and device of data channel scheduling information|
    CN104125035B|2013-04-23|2017-05-24|展讯通信（上海）有限公司|Method and apparatus for DCI false detection screening|
    WO2015010269A1|2013-07-24|2015-01-29|华为技术有限公司|Channel detection method, apparatus and terminal|
    US10813082B2|2013-07-26|2020-10-20|Qualcomm Incorporated|Transmission time intervalbundling for control channels in long term evolution |
    EP2978270B1|2013-08-23|2018-10-03|Huawei Technologies Co., Ltd.|Method and device for transmitting uplink information|
    WO2015057134A1|2013-10-16|2015-04-23|Telefonaktiebolaget L M Ericsson |Managing of paging of a wireless device in a wireless communication network|
    WO2015070369A1|2013-11-12|2015-05-21|Nokia Technologies Oy|Apparatus and method for serving cell configuration for dual connectivity|
    US9467269B2|2014-01-06|2016-10-11|Intel IP Corporation|Systems and methods for modulation and coding scheme selection and configuration|
    US20150195819A1|2014-01-06|2015-07-09|Intel IP Corporation|Systems and methods for modulation and coding scheme selection and configuration|
    US10075309B2|2014-04-25|2018-09-11|Qualcomm Incorporated|Modulation coding schemeindication in LTE uplink|
    US9867187B2|2014-08-04|2018-01-09|Qualcomm Incorporated|Techniques for configuring uplink channel transmissions using shared radio frequency spectrum band|
    US10244426B2|2014-08-19|2019-03-26|Qualcomm Incorporated|Frequency error detection with PBCH frequency hypothesis|
    USD785586S1|2014-10-01|2017-05-02|Samsung Electronics Co., Ltd.|Portable electronic device|
    USD779450S1|2014-10-01|2017-02-21|Samsung Electronics Co., Ltd.|Portable electronic device|
    USD779449S1|2014-10-01|2017-02-21|Samsung Electronics Co., Ltd.|Portable electronic device|
    USD797713S1|2014-10-01|2017-09-19|Samsung Electronics Co., Ltd.|Portable electronic device|
    USD781275S1|2014-10-01|2017-03-14|Samsung Electronics Co., Ltd.|Portable electronic device|
    USD795855S1|2014-10-01|2017-08-29|Samsung Electronics Co., Ltd.|Portable electronic device|
    USD803818S1|2014-10-01|2017-11-28|Samsung Electronics Co., Ltd.|Portable electronic device|
    USD784972S1|2014-10-01|2017-04-25|Samsung Electronics Co., Ltd.|Portable electronic device|
    US10063340B2|2014-11-25|2018-08-28|Nokia Solutions And Networks Oy|Dynamic resource adaptation|
    US10028176B2|2015-03-14|2018-07-17|Qualcomm Incorporated|Carrier aggregation across different radio access technologies|
    BR112017005567A2|2015-04-10|2017-12-12|Panasonic Ip Corp America|wireless communication method, enodeb and user equipment|
    US10206211B2|2015-06-04|2019-02-12|Futurewei Technologies, Inc.|Device, network, and method for wideband long-term evolutionuplink transmission|
    US9661513B2|2015-06-09|2017-05-23|Ixia|Methods, systems, and computer readable media for enhanced channel control elementdecoding in LTE networks|
    TW201714467A|2015-08-25|2017-04-16|Idac控股公司|Downlink control channel in wireless systems|
    US11212760B2|2015-09-24|2021-12-28|Qualcomm Incorporated|Common synchronization channel design for narrowband communications|
    US9979452B2|2015-12-29|2018-05-22|Lg Electronics Inc.|Method for multi-user transmission in a wireless local area network and device for same|
    CN107370580A|2016-05-11|2017-11-21|中兴通讯股份有限公司|The sending method and device of uplink channel information and/or signal|
    US11019609B2|2016-07-15|2021-05-25|Guangdong Oppo Mobile Telecommunications Corp., Ltd.|Wireless-network-based communication method, terminal device, and network device|
    US10687252B2|2016-09-28|2020-06-16|Qualcomm Incorporated|Bandwidth groupfor enhanced channel and interference mitigation in 5G new radio|
    PT3453212T|2016-11-04|2020-01-06|Ericsson Telefon Ab L M|Method and apparatus for identifying and using radio resources in a wireless communication network|
    KR20180062979A|2016-11-05|2018-06-11|애플 인크.|Asymmetric bandwidth support and dynamic bandwidth tuning|
    JP6842742B2|2016-11-14|2021-03-17|テレフオンアクチーボラゲット エルエム エリクソン（パブル）|Radio device and network node methods, such radio devices and network nodes, and their computer programs.|
    KR20180068677A|2016-12-14|2018-06-22|삼성전자주식회사|Method and apparatus for transmitting and receiving downlink control channel in wirelss communication system|
    US10321386B2|2017-01-06|2019-06-11|At&T Intellectual Property I, L.P.|Facilitating an enhanced two-stage downlink control channel in a wireless communication system|
    CN108365936B|2017-01-26|2020-10-27|华为技术有限公司|Communication method, device and system|
    US11115868B2|2017-05-15|2021-09-07|Samsung Electronics Co., Ltd.|Method and apparatus for control resource set configuration and monitoring of downlink control channel in wireless communication system|
    WO2019019200A1|2017-07-28|2019-01-31|华为技术有限公司|Data transmission method and apparatus|
    US10484981B2|2017-08-10|2019-11-19|At&T Intellectual Property I, L.P.|Decoding downlink control channels for 5G wireless communication systems|
    CN109391417A|2017-08-11|2019-02-26|华为技术有限公司|Transmit the methods, devices and systems of Downlink Control Information|
    US10542443B2|2017-10-27|2020-01-21|Keysight Technologies, Inc.|Methods, systems, and computer readable media for testing long term evolutionair interface device using emulated noise in unassigned resource blocks |
    US10945251B2|2017-11-15|2021-03-09|Sharp Kabushiki Kaisha|User equipments, base stations and methods|
    US10973013B2|2017-11-15|2021-04-06|Sharp Kabushiki Kaisha|User equipments, base stations and methods|
    US10673553B2|2018-03-23|2020-06-02|Qualcomm Incorporated|Search space overbooking and pruning|
    KR20200009662A|2018-07-19|2020-01-30|삼성전자주식회사|A method and apparatus for downlink control informaton transmission and reception in a wireless communication systems|
    US20220039138A1|2018-12-11|2022-02-03|Ntt Docomo, Inc.|User terminal and radio communication method|
    CN111757516A|2019-03-29|2020-10-09|电信科学技术研究院有限公司|Method and device for sending and processing downlink control information|
    WO2022025498A1|2020-07-30|2022-02-03|엘지전자 주식회사|Method for performing channel access procedure and device therefor|
    法律状态:
    2017-07-18| B25D| Requested change of name of applicant approved|Owner name: MOTOROLA MOBILITY LLC (US) |
    2017-08-08| B25G| Requested change of headquarter approved|Owner name: MOTOROLA MOBILITY LLC (US) |
    2017-08-29| B25A| Requested transfer of rights approved|Owner name: GOOGLE TECHNOLOGY HOLDINGS LLC (US) |
    2019-01-15| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-03-03| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-04-27| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-07-06| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 08/06/2010, OBSERVADAS AS CONDICOES LEGAIS. PATENTE CONCEDIDA CONFORME ADI 5.529/DF, QUE DETERMINA A ALTERACAO DO PRAZO DE CONCESSAO. |
    优先权:
    申请号 | 申请日 | 专利标题
    US22055609P| true| 2009-06-25|2009-06-25|
    US61/220,556|2009-06-25|
    US12/767,161|US8340676B2|2009-06-25|2010-04-26|Control and data signaling in heterogeneous wireless communication networks|
    US12/767,161|2010-04-26|
    PCT/US2010/037679|WO2010151424A2|2009-06-25|2010-06-08|Control and data signaling in heterogeneous wireless communication networks|
    [返回顶部]