WO2015158111A1 - Procédé et appareil pour une mise en correspondance de débits binaires de liaison descendante - Google Patents

Procédé et appareil pour une mise en correspondance de débits binaires de liaison descendante Download PDF

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Publication number
WO2015158111A1
WO2015158111A1 PCT/CN2014/087222 CN2014087222W WO2015158111A1 WO 2015158111 A1 WO2015158111 A1 WO 2015158111A1 CN 2014087222 W CN2014087222 W CN 2014087222W WO 2015158111 A1 WO2015158111 A1 WO 2015158111A1
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configuration
csi
information element
identifier
epdcch
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PCT/CN2014/087222
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English (en)
Chinese (zh)
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李儒岳
徐俊
谢峰
张峻峰
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中兴通讯股份有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received

Definitions

  • the present invention relates to the field of channel state information (CSI) measurement, and in particular, to a method and apparatus for downlink data rate matching.
  • CSI channel state information
  • the frame structure of the Long Term Evolution (LTE) system Time Division Duplex (TDD) mode is shown in Figure 1.
  • a 10 ms radio frame consists of two half frames of 5 ms in length. The fields are composed of 5 subframes of length 1 ms.
  • the uplink and downlink configurations supported by the frame structure are as shown in Table 1, where D indicates that the subframe is used for downlink transmission, U indicates that the subframe is used for uplink transmission, and S indicates a special subframe and includes three special time slots, that is, downlink.
  • the eNB evolved Node B
  • SIB1 system broadcast message
  • TDD-enhanced interference management and traffic adaptation is a system performance enhancement technology introduced in the LTE TDD system, which allows the base station to dynamically or semi-statically adjust according to its cell service load change.
  • the uplink and downlink configurations are configured to match cell service load changes and meet cell service load requirements, thereby improving system uplink and downlink throughput performance and overall system performance.
  • the base station sends the adjusted uplink and downlink configuration information to the user equipment by using a downlink control channel (for example, a physical downlink control channel (PDCCH)).
  • a downlink control channel for example, a physical downlink control channel (PDCCH)
  • eNB1, eNB2, and eNB3 are three base stations in an area, and the uplink and downlink configuration 0, the uplink and downlink configuration 1, and the uplink and downlink configuration 2 are respectively adopted according to the service load situation of the respective cells, and then, eNB2 is used.
  • downlink transmission when eNB2 performs downlink transmission in subframe 0, it will receive downlink interference caused by downlink transmission of eNB1 and eNB3 in the corresponding subframe; when eNB2 performs downlink transmission in subframe 4, it will be performed by eNB1 in the corresponding subframe.
  • the uplink interference generated by the uplink transmission may be downlink interference generated by the downlink transmission of the eNB3 in the corresponding subframe;
  • the TDD eIMTA supports the sub-frame packet CSI measurement reporting mechanism for the downlink sub-frames to improve the downlink adaptation effect and improve the downlink throughput performance of the system.
  • the base station can semi-statically divide the potential downlink subframe (including the special subframe) in the radio frame into two subframe groups, so that the user equipment performs periodic or aperiodic CSI measurement reports on the two subframe groups respectively. Therefore, the base station can receive CSI information corresponding to each of the two subframe groups, and perform downlink adaptive transmission on the two subframe groups respectively.
  • the following three types of downlink physical control channels are defined in the Release 8 standard of the Long-Term Evolution (LTE): Physical Control Format Indicator Channel (PCFICH), and physical A hybrid automatic retransmission request indicator channel (PHICH) and a physical downlink control channel (PDCCH) are referred to as a physical downlink control channel (Physical Hybrid Control Channel).
  • the PDCCH is used to carry downlink control information (Downlink Control Information, DCI for short), and includes: uplink and downlink scheduling information, and uplink power control information.
  • the DCI format (DCI format) is divided into the following types: DCI format0, DCI format 1, DCI format 1A, DCI format 1B, DCI format 1C, DCI format1D, DCI format 2, DCI format 2A, DCI format 3, and DCI format 3A.
  • the transmission mode 5 supporting the MU-MIMO utilizes the downlink control information of the DCI format 1D, and the downlink power domain (Downlink power offset field) G power-offset in the DCI format 1D is used to indicate that in the MU-MIMO mode One user's power is halved (ie -10log10(2)) because MU-MIMO transmission mode 5 only supports MU-MIMO transmission for two users.
  • MU-MIMO transmission mode 5 can support SU. - Dynamic switching of MIMO mode and MU-MIMO mode, but this DCI format supports only one stream transmission for one UE in either SU-MIMO mode or MU-MIMO mode, although LTE Release 8 supports up to two in transmission mode 4. Single-user transmission of the stream, but since the switching between transmission modes can only be semi-static, dynamic switching of single-user multi-stream transmission and multi-user transmission cannot be performed in LTE Release 8.
  • a dual-stream beamforming transmission mode is introduced, defined as transmission mode 8, and downlink control information is added to DCI format 2B to support such transmission.
  • the mode in the DCI format 2B, has a scrambling identity (SCID) identification bit to support two different scrambling code sequences, and the eNB can allocate the two scrambling code sequences to different users, in the same resource. Reuse multiple users.
  • SCID scrambling identity
  • the new data indication (NDI) bit corresponding to the non-enabled (Transabled) transport block is also used to indicate the antenna port at the time of single layer transmission.
  • LTE-A Long Term Evolution Advanced
  • LTE-A supports up to 8 antennas in the Rel-10 and Rel-11 versions on the basis of the existing LTE system.
  • /MU-MIMO dynamic handover carrier aggregation CA, multipoint coordinated transmission COMP, inter-cell interference coordination eICIC, advanced relay, enhanced PDCCH and other key technologies.
  • a new closed-loop spatial multiplexing transmission mode is added, which is defined as transmission mode 9, and the downlink control information is increased by DCI format 2C.
  • This transmission mode is supported.
  • This transmission mode can support both single-user SU-MIMO and multi-user MU-MIMO, and can support dynamic switching between the two.
  • this transmission mode also supports 8-antenna transmission.
  • This new transmission mode has determined the pilot for demodulation using the UE Specific Reference Signal (URS). The UE needs to obtain the position of the pilot before it can do the channel on the pilot. Estimation of interference.
  • URS UE Specific Reference Signal
  • LTE Release 11 in order to further support multipoint coordinated transmission of COMP, it is defined as transmission mode 10, and downlink control information is added with DCI format 2D to support such transmission. mode.
  • the UE is semi-statically set by higher layer signaling to be based on one of the following transmission modes, in accordance with an indication of the PDCCH of the user equipment-specific (UE-Specific) search space.
  • Transmission mode 1 single antenna port; port 0 (Single-antenna port; port 0);
  • Transmission mode 2 Transmit diversity (Transmit diversity);
  • Transmission mode 3 Open-loop spatial multiplexing
  • Transmission mode 4 Closed-loop spatial multiplexing
  • Transmission mode 5 multi-user multiple input multiple output (Multi-user MIMO);
  • Transmission mode 7 single antenna port; port 5 (Single-antenna port; port 5);
  • Transmission mode 8 dual stream transmission, ie dual stream beamforming
  • Transmission mode 9 Up to 8 layer transmission (up to 8 layer transmission);
  • Transmission mode 10 support up to 8 layer transmission of COMP (up to 8 layer transmission);
  • the user equipment When the transmission mode 10 is adopted, the user equipment supports one or more CSI processes for CSI measurement. For each CSI process, there is one CSI reference signal (CSI-RS, CSI Reference Signal) resource and one CSI interference measurement (CSI). -IM, CSI Interference Measurement)
  • CSI-RS CSI reference signal
  • CSI Reference Signal CSI Reference Signal
  • CSI interference measurement CSI interference measurement
  • -IM CSI Interference Measurement
  • the resource performs channel measurement, and performs CSI measurement result based on the CSI-IM resource, where the CSI-RS resource is a non-zero power CSI-RS, and the CSI-IM resource is a zero power CSI-RS.
  • the CSI-RS configuration includes a resource element (RE, Resource Element) location mapping and a CSI-RS subframe configuration
  • the CSI-RS subframe configuration includes a CSI-RS period and a CSI-RS subframe offset, where
  • the CSI-RS cycle includes 5, 10, 20, 40, and 80 ms.
  • the prior art stipulates that the user equipment does not expect to receive a CSI-IM resource configuration that cannot completely overlap with a zero-power CSI-RS resource configuration that the system can configure for the user equipment.
  • UE-specific reference signal In LTE Release 11, there is a need to support enhanced physical downlink control channel PDCCH (EPDCCH) transmission, and a specific UE-specific reference signal (UE specific reference signal) needs to be transmitted to support EPDCCH transmission, and the data transmission technology is mainly applied to transmission.
  • Control signaling to improve the transmission efficiency of control signaling.
  • the problem of downlink control signaling is basically about CSI-RS signaling enhancement, DMRS signaling enhancement, Cell-Specific Reference Signal (CRS) collision and interference problem avoidance enhancement, PDSCH start symbol CSI-RS collision and interference avoidance enhancements that align receive enhancement, zero power, and non-zero power.
  • CRS collision and interference problem avoidance enhancement CRS collision and interference problem avoidance enhancement, PDSCH start symbol alignment reception enhancement, zero power and non-zero power CSI-RS collision and interference avoidance enhancement are all in the rate matching category, collectively referred to as interference avoidance method, specifically, according to The signaling is used to perform rate matching processing or interference compression processing.
  • the main reason is that in the new scenario of the R11 version, four network scenarios are defined, and standard work is performed for different application scenarios, especially scenarios 1 to 3 ( Scenarios 1 to 3), because different nodes have different cell identifiers, resulting in different CRS locations of different nodes, resulting in different sequences of different nodes.
  • the base station configures a PQI (PDSCH RE Mapping and Quasi-Co-Location Indicator) state for the UE in the transmission mode 10, and each EPDCCH physical resource block set EPDCCH-PRB-set (EPDCCH-
  • the physical resource block-set can only be configured with one parameter set defined by the PQI state, and is used to determine the mapping of the resource elements of the EPDCCH (RE mapping) and the quasi co-location of the EPDCCH antenna port.
  • the eNB2 divides the downlink subframes 0, 1, 5, and 6 into the subframe group 1, and divides the downlink subframes 4 and 9 into the subframe group 2, and the CSI-configured by the eNB2.
  • the IM resources may be located on subframes 0, 5, or on subframes 1, 6, or on subframes 4, 9, that is, CSI-IM resources can only be distributed in subframes of one of the subframe groups. Then, when the user equipment needs to report the CSI of another subframe group, the corresponding CSI reference resource cannot be received, so that the corresponding CSI measurement result cannot be received.
  • different subframe groups may have different CSI-IM resources, but lack rate matching considerations of different subframe groups; for the related art, the data rate matching accuracy of the downlink EPDCCH is relatively low, No effective solution has yet been proposed.
  • the user equipment When the transmission mode 1-8 and the transmission mode 9 in which the precoding matrix indication and the rank indication report parameter are not configured, the user equipment performs CSI measurement based on the cell level reference signal CRS, and the prior art supports the user equipment to use the subframe n as the CSI reference.
  • the user equipment receives the CSI measurement result on the subframe.
  • the PDCCHs carrying the CSI request indication information can be transmitted only in the downlink subframe or the special subframe in the uplink and downlink configuration notified by the SIB1, because the different base stations can flexibly adjust the uplink and downlink configuration according to the traffic load condition of the cell.
  • the frame is divided into the same subframe group.
  • the user equipment uses the subframe n as the CSI reference resource, and cannot receive the CSI measurement corresponding to the other subframe group. As a result, the user equipment is thus unable to effectively implement the aperiodic CSI report for the subframe group. There is currently no effective solution to this problem.
  • the same rate matching problem also occurs when the UE is in a non-downlink control letter.
  • Receiving the PDSCH in the case of the Downlink Control Information (DCI) Format 2D including the UE, when the UE receives the PDSCH based on the DCI Format 1A in the transmission mode 1-9 or the transmission mode 10, the prior art base station can only configure the UE for the PDSCH.
  • a zero-power CSI-RS of the resource element map, so the problem of lower rate matching accuracy is also generated.
  • the method and the device for matching the downlink data rate are at least for the problem that the downlink data rate matching accuracy is relatively low in the related art, because the different subframe groups may have different interferences. Solve the above problem.
  • the embodiment of the present invention provides a method for downlink data rate matching applied to a base station, including:
  • the base station configures an enhanced physical downlink control channel EPDCCH configuration information element for the user equipment UE with the transmission mode M, the EPDCCH configuration information element includes N EPDCCH configuration set information, or the user equipment UE with the transmission mode M a zero power channel state information reference signal CSI-RS information element list and a physical downlink shared channel PDSCH configuration information element, the zero power CSI-RS information element list including P zero power CSI-RS information elements;
  • Each EPDCCH configuration set or PDSCH configuration information element of the EPDCCH configuration information element includes at least X resource mapping and an identifier re-MappingQCL-ConfigId of a quasi-same location QCL configuration, the identifier of the resource mapping and QCL configuration is used to determine an EPDCCH Mapping of resource elements RE mapping and QPDCCH of EPDCCH antenna port, or mapping of resource elements of PDSCH to RE mapping and QCL of PDSCH antenna port;
  • the base station performs rate matching processing according to the EPDCCH configuration information element, and sends an EPDCCH to the user equipment; or performs rate matching processing according to the PDSCH configuration information element or the zero-power CSI-RS information element list, and sends the PDSCH data to the user. device;
  • the base station configures an enhanced physics for the user equipment UE with the transmission mode M
  • M is a positive integer greater than or equal to 10
  • N is a positive integer greater than or equal to 1
  • X is a positive integer greater than or equal to 1.
  • M is a positive integer greater than or equal to 1
  • N I is a positive integer greater than or equal to 1 and less than or equal to 2
  • X is a positive integer greater than or equal to 1
  • P is a positive integer greater than or equal to 1 and less than or equal to 4.
  • the identifier of the resource mapping and the QCL configuration, the re-MappingQCL-ConfigId indicates a set of parameters, where the parameter set includes at least: a cell-specific reference signal CRS parameter, and a multicast single-frequency network MBSFN subframe configuration list.
  • each EPDCCH configuration set of the EPDCCH configuration information element includes at least one resource mapping and a QCL configuration identifier re-MappingQCL-ConfigId,
  • the base station implicitly allocates an additional ZP CSI-RS configuration identifier in each EPDCCH configuration set information, or
  • the base station additionally separately configures one ZP CSI-RS configuration identifier in each EPDCCH configuration set information.
  • the implicitly allocated ZP CSI-RS configuration identifier is a ZP CSI-RS configuration identifier of (re-MappingQCL-ConfigId+1) mod L, where L is a positive integer greater than or equal to 1.
  • the PDSCH configuration information element supports a semi-persistent scheduling SPS, where the PDSCH configuration information element includes at least two resource mappings and a QCL configuration identifier re-MappingQCL-ConfigId,
  • the base station configures the first re-MappingQCL-ConfigId to be 1 in the PDSCH configuration information element, and sets the second re-MappingQCL-ConfigId to 2.
  • each EPDCCH configuration set of the EPDCCH configuration information element includes at least two resource mappings and a QCL configuration identifier re-MappingQCL-ConfigId,
  • the NZP CSI-RS identifier is the same as the corresponding parameter of the first re-MappingQCL-ConfigId, and the ZP CSI-RS configuration identifier of the second re-MappingQCL-ConfigId is different from the corresponding parameter of the first re-MappingQCL-ConfigId, or
  • the CRS parameter of the second re-MappingQCL-ConfigId, the MBSFN subframe configuration list, the QCL NZP CSI-RS identifier are invalid, and the ZP CSI-RS configuration identifier of the second re-MappingQCL-ConfigId is valid.
  • each EPDCCH configuration set of the EPDCCH configuration information element includes at least one resource mapping and QCL configuration identifier re-MappingQCL-ConfigId, and one resource mapping and QCL configuration indication configuration has two ZP CSI-RS configuration identifier.
  • the base station sends the EPDCCH configuration information element or the PDSCH configuration information element to the user equipment by using high layer configuration signaling.
  • the performing, by the base station, the rate matching processing according to the EPDCCH configuration information element includes: the base station not transmitting at least EPDCCH data on the resource indicated by the ZP CSI-RS configuration identifier, or the base station according to the PDSCH
  • the configuration information element or the zero-power CSI-RS information element list performing rate matching processing includes the base station not transmitting at least PDSCH data on the resource indicated by the ZP CSI-RS configuration identifier.
  • the base station performs rate matching processing on the PDSCH data according to the rate matching parameter of the first re-MappingQCL-ConfigId of the PDSCH configuration information element supporting the SPS and the ZP CSI-RS configuration identifier of the second re-MappingQCL-ConfigId. .
  • the base station if the PDSCH supports transmission from port 0 to port 3 or transmission mode 1 to 9, the base station according to the minimum ZP CSI-RS resource identifier of the zero-power CSI-RS information element list and the second small The ZP CSI-RS resource identifier performs rate matching processing of PDSCH data, wherein the zero-power CSI-RS information element list defines a plurality of CSI-RS resources; or, if the PDSCH supports transmission or transmission from port 0 to port 3 Modes 1 to 9, the base station further sends a version 10 CSI-RS configuration information element to the terminal, and the base station according to the minimum ZP CSI-RS resource identifier of the zero-power CSI-RS information element list and the The ZP CSI-RS resource of the CSI-RS configuration information element of Release 10 performs rate matching processing of PDSCH data.
  • an embodiment of the present invention provides a method for rate matching, which should For terminals, including:
  • the user equipment UE with the transmission mode M receives one physical downlink shared channel PDSCH configuration information element sent by the base station, the EPDCCH configuration information element includes N EPDCCH configuration set information, or receives a zero power channel state information reference signal CSI sent by the base station.
  • the EPDCCH configuration information element includes N EPDCCH configuration set information, or receives a zero power channel state information reference signal CSI sent by the base station.
  • the zero power CSI-RS information element list includes P zero power CSI-RS information elements;
  • Each EPDCCH configuration set or PDSCH configuration information element of the EPDCCH configuration information element includes at least X resource mapping and an identifier re-MappingQCL-ConfigId of a quasi-same location QCL configuration, the identifier of the resource mapping and QCL configuration is used to determine an EPDCCH Mapping of resource elements RE mapping and QCL of antenna ports of EPDCCHSCH, or mapping of resource elements of PDSCH to RE mapping and QCL of antenna ports of PDSCH;
  • the user equipment UE performs rate matching processing according to the EPDCCH configuration information element, and performs decoding processing on the EPDCCH data; or performs rate matching processing according to the PDSCH configuration information element or the zero-power CSI-RS information element list,
  • the PDSCH data is subjected to decoding processing;
  • M is a positive integer greater than or equal to 10
  • N is a positive integer greater than or equal to 1
  • X is a positive integer greater than or equal to 1;
  • M is a positive integer greater than or equal to 1
  • N is a positive integer greater than or equal to 1 and less than or equal to 2
  • X is a positive integer greater than or equal to 1
  • P is a positive integer greater than or equal to 1 and less than or equal to 4.
  • the identifier of the resource mapping and the QCL configuration, the re-MappingQCL-ConfigId indicates a set of parameters, where the parameter set includes at least: a cell-specific reference signal CRS parameter, and a multicast single-frequency network MBSFN subframe configuration list.
  • each EPDCCH configuration set of the EPDCCH configuration information element includes at least one resource mapping and a QCL configuration identifier re-MappingQCL-ConfigId,
  • Each of the EPDCCH configuration set information received by the UE is implicitly additionally assigned with a ZP CSI-RS configuration identifier, or
  • Each of the EPDCCH configuration set information received by the UE is additionally configured with a ZP CSI-RS configuration identifier.
  • the implicitly allocated ZP CSI-RS configuration identifier is a ZP CSI-RS configuration identifier of (re-MappingQCL-ConfigId+1) mod L, where L is a positive integer greater than or equal to 1.
  • the PDSCH configuration information element supports a semi-persistent scheduling SPS, where the PDSCH configuration information element includes at least two resource mappings and a QCL configuration identifier re-MappingQCL-ConfigId,
  • the first re-MappingQCL-ConfigId of the PDSCH configuration information element received by the UE is 1, and the second re-MappingQCL-ConfigId is 2.
  • each EPDCCH configuration set of the EPDCCH configuration information element includes at least two resource mappings and a QCL configuration identifier re-MappingQCL-ConfigId,
  • the CRS parameter of the second re-MappingQCL-ConfigId, the MBSFN subframe configuration list, the QCL NZP CSI-RS identifier are the same as the corresponding parameters of the first re-MappingQCL-ConfigId, and the ZP CSI-RS configuration identifier of the second re-MappingQCL-ConfigId Different from the corresponding parameters of the first re-MappingQCL-ConfigId, or
  • the CRS parameter of the second re-MappingQCL-ConfigId, the MBSFN subframe configuration list, the QCL NZP CSI-RS identifier are invalid, and the ZP CSI-RS configuration identifier of the second re-MappingQCL-ConfigId is valid.
  • each EPDCCH configuration set of the EPDCCH configuration information element includes at least one resource mapping and QCL configuration identifier re-MappingQCL-ConfigId, and one resource mapping and QCL configuration indication configuration has two ZP CSI-RS configuration identifier.
  • the terminal receives the EPDCCH configuration information element sent by the base station by using the high layer configuration signaling, or receives the PDSCH configuration information element and the zero power CSI-RS information element list sent by the base station.
  • the user equipment UE performs a rate according to the EPDCCH configuration information element.
  • the matching processing includes: when the decoding is not using the information on the physical resource indicated by the ZP CSI-RS configuration identifier, or the decoding soft information of the physical resource indicated by the terminal corresponding to the ZP CSI-RS configuration identifier is 0; or, according to And performing a rate matching process on the PDSCH configuration information element or the zero-power CSI-RS information element list, including: not using the physical resource information indicated by the ZP CSI-RS configuration identifier during decoding, or setting the corresponding ZP CSI-RS by the terminal setting The decoding soft information of the physical resource indicated by the configuration identifier is 0.
  • the terminal performs rate matching processing of the PDSCH data according to the rate matching parameter of the first re-MappingQCL-ConfigId of the PDSCH configuration information element supporting the SPS and the ZP CSI-RS configuration identifier of the second re-MappingQCL-ConfigId.
  • the terminal if the PDSCH supports transmission from port 0 to port 3 or transmission mode 1 to 9, the terminal according to the minimum ZP CSI-RS resource identifier of the zero-power CSI-RS information element list and the second small The ZP CSI-RS resource identifier performs rate matching processing of PDSCH data, wherein the zero-power CSI-RS information element list defines a plurality of CSI-RS resources; or, if the PDSCH supports transmission from port 0 to port 3 or transmission mode 1 Up to 9, the terminal further receives a version 10 CSI-RS configuration information element sent by the base station, where the terminal is based on the minimum ZP CSI-RS resource identifier of the zero-power CSI-RS information element list and the version The ZP CSI-RS resource of the CSI-RS configuration information element of 10 performs rate matching processing of the PDSCH data.
  • an embodiment of the present invention provides a rate matching device for downlink data, which is disposed at a base station, and includes:
  • the resource mapping and QCL configuration unit is configured to configure an enhanced physical downlink control channel EPDCCH configuration information element for the user equipment UE with the transmission mode M, where the EPDCCH configuration information element includes N EPDCCH configuration set information; or the transmission mode is
  • the user equipment UE of the M configures a zero power channel state information reference signal CSI-RS information element list and a physical downlink shared channel PDSCH configuration information element, the zero power CSI-RS information element list including P zero power CSI-RS information element;
  • Each EPDCCH configuration set or PDSCH configuration information element of the EPDCCH configuration information element includes at least an identifier re-MappingQCL-ConfigId of X resource mapping and quasi-same location QCL configuration, the identifier of the resource mapping and QCL configuration is used to determine Mapping of RE elements of the EPDCCH and QCL of the EPDCCH antenna port, or mapping of the resource elements of the PDSCH and the QCL of the PDSCH antenna port;
  • a sending unit configured to send the EPDCCH configuration information element to the UE, or send a PDSCH configuration information element and a zero-power CSI-RS information element list to the UE;
  • a data processing unit configured to perform rate matching processing according to the EPDCCH configuration information element, and send EPDCCH or PDSCH data to the user equipment; or perform rate matching processing according to the PDSCH configuration information element or the zero-power CSI-RS information element list Sending PDSCH data to the user equipment;
  • M is a positive integer greater than or equal to 10
  • N is greater than or equal to 1
  • X is a positive integer greater than or equal to 1;
  • M is greater than A positive integer equal to 1
  • N is a positive integer greater than or equal to 1 and less than or equal to 2
  • X is a positive integer greater than or equal to 1
  • P is a positive integer greater than or equal to 1 and less than or equal to 4.
  • the resource mapping and the QCL configuration of the resource mapping and the QCL configuration identifier re-MappingQCL-ConfigId indicate a set of parameters
  • the parameter set includes at least: a cell-specific reference signal CRS parameter, and a Multicast single frequency network MBSFN subframe configuration list, QCL non-zero power channel state information - reference symbol QCL NZP CSI-RS identifier, Y ZP CSI-RS configuration identifiers; where Y is a positive integer greater than or equal to 1.
  • the base station implicitly allocates an additional ZP CSI-RS configuration identifier in each EPDCCH configuration set information, or
  • the base station additionally separately configures one ZP CSI-RS configuration identifier in each EPDCCH configuration set information.
  • the implicitly allocated ZP CSI-RS configuration identifier is a ZP CSI-RS configuration identifier of (re-MappingQCL-ConfigId+1) mod L, where L is a positive integer greater than or equal to 1.
  • the base station configures the first re-MappingQCL-ConfigId to be 1 in the PDSCH configuration information element, and sets the second re-MappingQCL-ConfigId to 2.
  • the CRS parameter of the second re-MappingQCL-ConfigId, the MBSFN subframe configuration list, the QCL NZP CSI-RS identifier are the same as the corresponding parameters of the first re-MappingQCL-ConfigId, and the ZP CSI-RS configuration identifier of the second re-MappingQCL-ConfigId Different from the corresponding parameters of the first re-MappingQCL-ConfigId, or
  • the CRS parameter of the second re-MappingQCL-ConfigId, the MBSFN subframe configuration list, the QCL NZP CSI-RS identifier are invalid, and the ZP CSI-RS configuration identifier of the second re-MappingQCL-ConfigId is valid.
  • the mapping and QCL configuration indications are configured with two ZP CSI-RS configuration identities.
  • the sending unit sends the EPDCCH configuration information element to the user equipment by using high layer configuration signaling, or sends the PDSCH configuration information element and a zero power CSI-RS information element list to the User equipment.
  • the data processing unit performs rate matching processing according to the EPDCCH configuration information element, where the data processing unit does not send at least EPDCCH data on the resource indicated by the ZP CSI-RS configuration identifier; or the data
  • the rate matching process performed by the processing unit according to the PDSCH configuration information element or the zero-power CSI-RS information element list refers to: the data processing unit At least no PDSCH data is transmitted on the resource indicated by the ZP CSI-RS configuration identifier.
  • the data processing unit performs the rate of the PDSCH data according to the rate matching parameter of the first re-MappingQCL-ConfigId of the PDSCH configuration information element supporting the SPS and the ZP CSI-RS configuration identifier of the second re-MappingQCL-ConfigId. Match processing.
  • the data processing unit according to the minimum ZP CSI-RS resource identifier of the zero-power CSI-RS information element list and the The two small ZP CSI-RS resource identifiers perform rate matching processing of PDSCH data, wherein the zero-power CSI-RS information element list defines multiple CSI-RS resources; or, if the PDSCH supports transmission from port 0 to port 3 Or transmitting modes 1 to 9, the transmitting unit further sends a version 10 CSI-RS configuration information element to the terminal, and the data processing unit is configured according to the minimum ZP CSI-RS of the zero-power CSI-RS information element list.
  • the resource identifier and the ZP CSI-RS resource of the CSI-RS configuration information element of the Release 10 perform rate matching processing of the PDSCH data.
  • an embodiment of the present invention provides a rate matching device, which is disposed in a terminal, and includes:
  • the receiving device is configured to receive an enhanced physical downlink control channel EPDCCH configuration information element sent by the base station, where the EPDCCH configuration information element includes N EPDCCH configuration set information; or receive a zero power channel state information reference signal CSI- sent by the base station.
  • EPDCCH configuration information element includes N EPDCCH configuration set information
  • CSI- sent by the base station receives a zero power channel state information reference signal CSI- sent by the base station.
  • Each EPDCCH configuration set or PDSCH configuration information element of the EPDCCH configuration information element includes at least X resource mapping and an identifier re-MappingQCL-ConfigId of a quasi-same location QCL configuration, the identifier of the resource mapping and QCL configuration is used to determine an EPDCCH Mapping of resource elements RE mapping and QPDCCH of EPDCCH antenna port, or mapping of resource elements of PDSCH to RE mapping and QCL of PDSCH antenna port;
  • a data demodulating device configured to perform rate matching processing according to the EPDCCH configuration information element, perform decoding processing on the EPDCCH data, or perform rate matching processing according to the PDSCH configuration information element or the zero-power CSI-RS information element list , performing PDSCH data Decoding processing
  • M is a positive integer greater than or equal to 10
  • N is a positive integer greater than or equal to 1
  • X is greater than or equal to a positive integer of 1;
  • M is a positive integer greater than or equal to 1
  • N is A positive integer greater than or equal to 1 and less than or equal to 2
  • X is a positive integer greater than or equal to 1
  • P is a positive integer greater than or equal to 1 and less than or equal to 4.
  • the resource mapping and the QCL configured identifier re-MappingQCL-ConfigId received by the receiving device indicates a set of parameters, where the parameter set includes at least: a cell-specific reference signal CRS parameter, and a multicast single frequency.
  • Each of the EPDCCH configuration set information received by the receiving device is implicitly additionally assigned with a ZP CSI-RS configuration identifier, or
  • Each of the EPDCCH configuration set information received by the receiving device is separately configured with a ZP CSI-RS configuration identifier.
  • the implicitly allocated ZP CSI-RS configuration identifier is a ZP CSI-RS configuration identifier of (re-MappingQCL-ConfigId+1) mod L, where L is a positive integer greater than or equal to 1.
  • the first re-MappingQCL-ConfigId of the PDSCH configuration information element received by the receiving device is 1, and the second re-MappingQCL-ConfigId is 2.
  • the CRS parameter of the second re-MappingQCL-ConfigId, the MBSFN subframe configuration list, the QCL NZP CSI-RS identifier are the same as the corresponding parameters of the first re-MappingQCL-ConfigId, and the ZP CSI-RS configuration identifier of the second re-MappingQCL-ConfigId Different from the corresponding parameters of the first re-MappingQCL-ConfigId, or
  • the CRS parameter of the second re-MappingQCL-ConfigId, the MBSFN subframe configuration list, the QCL NZP CSI-RS identifier are invalid, and the ZP CSI-RS configuration identifier of the second re-MappingQCL-ConfigId is valid.
  • each EPDCCH configuration set of the EPDCCH configuration information element includes at least one resource mapping and QCL configuration identifier re-MappingQCL-ConfigId, a resource mapping and The QCL configuration indication is configured with two ZP CSI-RS configuration identifiers.
  • the receiving device receives the transmitted EPDCCH configuration information element from the base station by using high layer configuration signaling, or receives a PDSCH configuration information element and a zero power CSI-RS information element list sent by the base station.
  • the data demodulation device performs rate matching processing according to the EPDCCH configuration information element, where: the information on the physical resource indicated by the ZP CSI-RS configuration identifier is not used when decoding, or the terminal sets the corresponding ZP.
  • the decoding soft information of the physical resource indicated by the CSI-RS configuration identifier is 0; or the data demodulating device performs rate matching processing according to the PDSCH configuration information element or the zero-power CSI-RS information element list:
  • the information on the physical resource indicated by the ZP CSI-RS configuration identifier is not used, or the decoding soft information of the physical resource indicated by the terminal corresponding to the ZP CSI-RS configuration identifier is 0.
  • the data demodulating device performs the rate of the PDSCH data according to the rate matching parameter of the first re-MappingQCL-ConfigId of the PDSCH configuration information element supporting the SPS and the ZP CSI-RS configuration identifier of the second re-MappingQCL-ConfigId. Match processing.
  • the data demodulating means is based on the minimum ZP of the zero power CSI-RS information element list
  • the CSI-RS resource identifier and the second small ZP CSI-RS resource identifier perform rate matching processing of the PDSCH data, wherein the zero-power CSI-RS information element list defines a plurality of CSI-RS resources; or, if the PDSCH supports the slave port 0
  • the transmission device or the transmission mode 1 to 9 of the port 3, the receiving device further receives a version 10 CSI-RS configuration information element sent by the base station, the data demodulating device according to the zero-power CSI-RS information element
  • the minimum ZP CSI-RS resource identifier of the list and the ZP CSI-RS resource of the CSI-RS configuration information element of the Release 10 perform rate matching processing of the PDSCH data.
  • An embodiment of the present invention provides a method and apparatus for downlink data rate matching applied to an eIMTA, which is applied to a base station and a terminal, and proposes that different subframe groups do not need different resource mapping and QCL configuration, and only need to provide different ZP CSI-RSs.
  • the identification parameters are configured, and various possible solutions solve the problem of low data rate matching accuracy under the condition of ensuring the minimum signaling overhead.
  • FIG. 1 is a schematic diagram of a frame structure of a TDD mode of a related art LTE system
  • 2 is a schematic diagram of interference conditions on different subframes in the related art
  • FIG. 3 is a flowchart of a method for downlink data rate matching applied to a base station according to an embodiment of the present invention
  • FIG. 4 is a flowchart of a method for rate matching applied to a terminal according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of an apparatus for downlink data rate matching applied to a base station according to an embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of an apparatus for rate matching applied to a terminal according to an embodiment of the present invention.
  • the embodiment of the present invention provides a rate matching method for the EPDCCH downlink data, to solve at least The above question.
  • FIG. 3 is a flowchart of a method for downlink data rate matching applied to a base station according to an embodiment of the present invention. As shown in FIG. 3, the method is applied to a base station, including:
  • Step S101 The base station configures one EPDCCH configuration set information of the ePDCCH configuration for the user equipment UE of the transmission mode M, and each configuration set includes at least X resource mapping and QLC configuration identifier re-MappingQCL-ConfigId for indicating one.
  • a set of parameter parameters the parameter set is used to determine a mapping of resource elements of the EPDCCH (RE mapping) and a quasi co-location of the EPDCCH antenna port, the set includes: one CRS parameter, one MBSFN subframe configuration list , QCL NZP CSI-RS identification, Y ZP CSI-RS configuration identification.
  • M is a positive integer greater than or equal to 10
  • N is a positive integer greater than or equal to 1
  • X and Y are positive integers greater than or equal to 1, respectively. among them:
  • each configuration set includes at least one resource mapping and QCL configuration identifier re-MappingQCL-ConfigId, and the base station implicitly allocates another ZP CSI-RS configuration identifier in each EPDCCH configuration set information.
  • the implicitly allocated ZP CSI-RS configuration identifier is a ZP CSI-RS configuration identifier of (re-MappingQCL-ConfigId+1) mod L, where L is a positive integer greater than or equal to one.
  • each configuration set includes at least one resource mapping and QCL configuration identifier re-MappingQCL-ConfigId, wherein the base station separately configures a separate ZP CSI-RS configuration in each EPDCCH configuration set information.
  • each configuration set includes at least two resource mappings and a QCL configuration identifier re-MappingQCL-ConfigId, and a CRS parameter of the second re-MappingQCL-ConfigId
  • the MBSFN subframe configuration list and the QCL NZP CSI-RS identifier are the same as the corresponding parameters of the first one, and the ZP CSI-RS configuration identifier of the second re-MappingQCL-ConfigId is different from the corresponding parameter of the first one.
  • each configuration set includes at least two resource mappings and a QCL configuration identifier re-MappingQCL-ConfigId, which is characterized by a CRS parameter of the second re-MappingQCL-ConfigId and an MBSFN subframe configuration list.
  • the QCL NZP CSI-RS identifier although present, is invalid by default, and the ZP CSI-RS configuration identifier of the second re-MappingQCL-ConfigId is valid.
  • each configuration set includes at least one resource mapping and QCL configuration identifier re-MappingQCL-ConfigId, wherein one resource mapping and QCL configuration indicates that two ZP CSI-RS configuration identifiers are configured.
  • Step S102 The base station sends the N EPDCCH configuration set information to the user equipment by using RRC signaling.
  • Step S103 The base station performs rate matching processing according to the N EPDCCH configuration set information, and sends the EPDCCH data to the user equipment. Specifically, the base station does not send EPDCCH data on the resource indicated by the ZP CSI-RS configuration identifier.
  • FIG. 4 is a flowchart of a method for rate matching applied to a terminal according to an embodiment of the present invention. As shown in FIG. 4, the method includes:
  • Step S201 The user equipment UE of one transmission mode M receives N EPDCCH configuration set information of one ePDCCH configuration; each configuration set includes at least X resource mapping and QLC configuration identifier re-MappingQCL-ConfigId, which is used to indicate a set of parameters.
  • a set the parameter set is used to determine a mapping of a resource element of an EPDCCH (RE mapping) and a quasi co-location of an EPDCCH antenna port, where the set includes: one CRS parameter, one MBSFN sub- Frame configuration list, QCL NZP CSI-RS identifier, Y ZP CSI-RS configuration identifiers.
  • M is a positive integer greater than or equal to 10
  • N is a positive integer greater than or equal to 1
  • X and Y are positive integers greater than or equal to 1, respectively. . among them:
  • each configuration set includes at least one resource mapping and QCL configuration identifier re-MappingQCL-ConfigId, and each EPDCCH configuration set information implicitly allocates another ZP CSI-RS configuration identifier.
  • the implicitly allocated ZP CSI-RS configuration identifier is a ZP CSI-RS configuration identifier of (re-MappingQCL-ConfigId+1) mod L, where L is a positive integer greater than or equal to one.
  • each configuration set includes at least one resource mapping and QCL configuration identifier re-MappingQCL-ConfigId, and each of the EPDCCH configuration set information is additionally configured with one ZP CSI-RS configuration identifier.
  • each configuration set includes at least two resource mapping and QCL configuration identifiers re-MappingQCL-ConfigId, CRS parameters of the second re-MappingQCL-ConfigId, MBSFN subframe configuration list, QCL NZP CSI
  • the -RS flag is the same as the corresponding parameter of the first one, and the ZP CSI-RS configuration identifier of the second re-MappingQCL-ConfigId is different from the corresponding parameter of the first one.
  • each configuration set includes at least two resource mapping and QCL configuration identifiers re-MappingQCL-ConfigId, CRS parameters of the second re-MappingQCL-ConfigId, MBSFN subframe configuration list, QCL NZP CSI
  • the -RS flag although present, is invalid by default, and the ZP CSI-RS configuration flag of the second re-MappingQCL-ConfigId is valid.
  • each configuration set includes at least one resource mapping and QCL configuration identifier re-MappingQCL-ConfigId, one resource mapping and QCL configuration indication configured with two ZPs CSI-RS configuration identifier.
  • Step S202 The UE performs rate matching processing according to the N EPDCCH configuration set information, and performs demodulation processing on the EPDCCH data.
  • the terminal places 0 on the physical resource indicated by the ZP CSI-RS configuration identifier.
  • an embodiment of the present invention provides a rate matching device for downlink data, which is set in a base station.
  • 5 is a schematic structural diagram of an apparatus for downlink data rate matching applied to a base station according to an embodiment of the present invention. As shown in FIG. 5, the method includes:
  • the resource mapping and QCL configuration unit 301 configures, by the user equipment UE of one transmission mode M, one EPDCCH configuration set information of one ePDCCH configuration, where each configuration set includes at least X resource mapping and an identifier re-MappingQCL-ConfigId of the QCL configuration, For indicating a set of parameters, the parameter set is used to determine a mapping of resource elements of an EPDCCH (RE mapping) and a quasi co-location of an EPDCCH antenna port, the set includes: one CRS parameter, one MBSFN Subframe configuration list, QCL NZP CSI-RS identification, Y ZP CSI-RS configuration identification. Where M is a positive integer greater than or equal to 10, N is a positive integer greater than or equal to 1, and X and Y are positive integers greater than or equal to 1, respectively. among them:
  • each configuration set includes at least one resource mapping and QCL configuration identifier re-MappingQCL-ConfigId, and the resource mapping and QCL configuration unit 301 implicitly allocates an additional ZP CSI in each EPDCCH configuration set information.
  • -RS configuration ID the resource mapping and QCL configuration unit 301 implicitly allocates an additional ZP CSI in each EPDCCH configuration set information.
  • each configuration set includes at least one resource mapping and QCL configuration identifier re-MappingQCL-ConfigId, and the resource mapping and QCL configuration unit 301 separately configures one ZP CSI separately in each EPDCCH configuration set information.
  • RS configuration ID the resource mapping and QCL configuration unit 301 separately configures one ZP CSI separately in each EPDCCH configuration set information.
  • each configuration set includes at least two resource mappings and QCL configuration identifiers.
  • re-MappingQCL-ConfigId, the CRS parameter of the second re-MappingQCL-ConfigId, the MBSFN subframe configuration list, the QCL NZP CSI-RS identifier are the same as the first corresponding parameter, and the ZP CSI of the second re-MappingQCL-ConfigId -
  • the RS configuration identifier is different from the corresponding parameter of the first one.
  • each configuration set includes at least two resource mapping and QCL configuration identifiers re-MappingQCL-ConfigId, CRS parameters of the second re-MappingQCL-ConfigId, MBSFN subframe configuration list, QCL NZP CSI
  • the -RS flag although present, is invalid by default, and the ZP CSI-RS configuration flag of the second re-MappingQCL-ConfigId is valid.
  • each configuration set includes at least one resource mapping and QCL configuration identifier re-MappingQCL-ConfigId, and one resource mapping and QCL configuration indication is configured with two ZP CSI-RS configuration identifiers.
  • the sending unit 302 sends the N pieces of EPDCCH configuration set information to the user equipment by using RRC signaling.
  • the data processing unit 303 performs rate matching processing according to the N pieces of EPDCCH configuration set information, and sends the EPDCCH data to the user equipment.
  • the data processing unit 303 does not transmit EPDCCH data on the resource indicated by the ZP CSI-RS configuration identifier.
  • FIG. 6 is a schematic structural diagram of an apparatus for rate matching applied to a terminal according to an embodiment of the present invention. As shown in FIG. 6, the method includes:
  • the receiving unit 401 is configured to receive N EPDCCH configuration set information of one ePDCCH configuration sent by the base station; each configuration set includes at least X resource mapping and QLC configured identifier re-MappingQCL-ConfigId, and is used to indicate a set of parameters,
  • the parameter set is used to determine the mapping of the resource elements of the EPDCCH (RE mapping) and the quasi-identical location of the EPDCCH antenna port (quasi co-location), the set includes: one CRS parameter, one MBSFN subframe configuration list, QCL NZP CSI-RS identifier, and Y ZP CSI-RS configuration identifiers.
  • M is a positive integer greater than or equal to 10
  • N is a positive integer greater than or equal to 1
  • X and Y are positive integers greater than or equal to 1, respectively. among them:
  • each configuration set includes at least one resource mapping and QCL configuration identifier re-MappingQCL-ConfigId, and each EPDCCH configuration set information implicitly allocates another ZP CSI-RS configuration identifier.
  • each configuration set includes at least one resource mapping and QCL configuration identifier re-MappingQCL-ConfigId, and each of the EPDCCH configuration set information is additionally configured with one ZP CSI-RS configuration identifier.
  • each configuration set includes at least two resource mapping and QCL configuration identifiers re-MappingQCL-ConfigId, CRS parameters of the second re-MappingQCL-ConfigId, MBSFN subframe configuration list, QCL NZP CSI
  • the -RS flag is the same as the corresponding parameter of the first one, and the ZP CSI-RS configuration identifier of the second re-MappingQCL-ConfigId is different from the corresponding parameter of the first one.
  • each configuration set includes at least two resource mapping and QCL configuration identifiers re-MappingQCL-ConfigId, CRS parameters of the second re-MappingQCL-ConfigId, MBSFN subframe configuration list, QCL NZP CSI
  • the -RS flag although present, is invalid by default, and the ZP CSI-RS configuration flag of the second re-MappingQCL-ConfigId is valid.
  • each configuration set includes at least one resource mapping and QCL configuration identifier re-MappingQCL-ConfigId, and one resource mapping and QCL configuration indication is configured with two ZP CSI-RS configuration identifiers.
  • the data demodulating unit 402 performs rate matching processing according to the N pieces of EPDCCH configuration set information, and performs demodulation processing on the EPDCCH data.
  • the data demodulation unit 402 places the soft information 0 on the physical resource indicated by the ZP CSI-RS configuration identifier.
  • the downlink data rate matching accuracy of the semi-persistent scheduling in the related art is relatively low, and the downlink data rate of the semi-persistent scheduling is relatively low.
  • the rate matching method is applied to the base station to solve at least the above problems, including:
  • Step A1 The base station first configures a zero-power CSI-RS information element list for the user equipment UE with the transmission mode M, and then configures one PDSCH configuration information element; one PDSCH configuration information element includes at least X resource mappings and quasi-identical locations.
  • the identifier of the QCL (quasi co-location) configuration re-MappingQCL-ConfigId, the identifier of the resource mapping and the QCL configuration is used to determine the mapping of the resource elements of the EPDCCH or the PDSCH, the RE mapping and the quasi-same location of the EPDCCH or PDSCH antenna port.
  • QCL quadsi co-location
  • a PDSCH configuration information element supporting SPS includes at least two resource mappings and a QCL configuration identifier re-MappingQCL-ConfigId, and the base station configures the first re-MappingQCL in the PDSCH configuration information element.
  • -ConfigId is 1, and the second re-MappingQCL-ConfigId is set to 2.
  • Step B1 The base station sends the one PDSCH configuration information element and a zero-power CSI-RS information element list to the UE;
  • Step C1 The base station performs rate matching processing according to a PDSCH configuration information element or a zero-power CSI-RS information element list, and sends PDSCH data to the user equipment.
  • step C1 the base station performs PDSCH data according to the rate matching parameter of the first re-MappingQCL-ConfigId of the PDSCH configuration information element supporting the SPS and the ZP CSI-RS configuration identifier of the second re-MappingQCL-ConfigId. Rate matching deal with.
  • a set of zero-power CSI-RS information elements includes P zero-power CSI-RS information elements, M is a positive integer greater than or equal to 1, N is a positive integer greater than or equal to 1 and less than or equal to 2, and X is a positive integer greater than or equal to 1.
  • An integer, P is an integer greater than or equal to 1 and less than or equal to 4.
  • the resource mapping and the QCL configured identifier re-MappingQCL-ConfigId indicates a set of parameters, the parameter set including at least: a cell-specific reference signal CRS parameter, an MBSFN subframe configuration list, a QCL NZP CSI-RS identifier, and a Y ZP CSI-RS configuration identifier, OFDM start symbol of PDSCH; where Y is a positive integer greater than or equal to 1.
  • the downlink data rate matching accuracy of the semi-persistent scheduling in the related art is relatively low, and the downlink data rate of the semi-persistent scheduling is relatively low.
  • the rate matching method is applied to the terminal to solve at least the above problems, including:
  • Step D1 The user equipment UE with the transmission mode M receives one PDSCH configuration information element sent by the base station, and one zero-power CSI-RS information element list;
  • one PDSCH configuration information element includes at least X resource mappings and quasi-identical locations QCL (quasi) Co-location) an identifier of the configured re-MappingQCL-ConfigId, where the identifier of the resource mapping and the QCL configuration is used to determine a mapping RE mapping of the resource element of the EPDCCH or the PDSCH and a quasi-co-location of the EPDCCH antenna port;
  • a PDSCH configuration information element supporting SPS includes at least two resource mappings and a QCL configuration identifier re-MappingQCL-ConfigId, and the base station configures the first re-MappingQCL in the PDSCH configuration information element.
  • -ConfigId is 1
  • the second re-MappingQCL-ConfigId is set to 2.
  • Step E1 The user equipment UE performs rate matching processing according to a PDSCH configuration information element or a zero-power CSI-RS information element list, and performs decoding processing on the PDSCH data.
  • step E1 the terminal performs PDSCH data according to the rate matching parameter of the first re-MappingQCL-ConfigId of the PDSCH configuration information element supporting the SPS and the ZP CSI-RS configuration identifier of the second re-MappingQCL-ConfigId. Rate matching processing.
  • a set of zero-power CSI-RS information elements includes P CSI-RS information elements, M is a positive integer greater than or equal to 1, N is a positive integer greater than or equal to 1 and less than or equal to 2, and X is a positive integer greater than or equal to 1.
  • P is an integer greater than or equal to 1 and less than or equal to 4.
  • the resource mapping and the QCL configured identifier re-MappingQCL-ConfigId indicates a set of parameters, the parameter set including at least: a cell-specific reference signal CRS parameter, an MBSFN subframe configuration list, a QCL NZP CSI-RS identifier, and a Y ZP CSI-RS configuration identifier, OFDM start symbol of PDSCH; where Y is a positive integer greater than or equal to 1.
  • Step A2 The base station first configures a zero-power CSI-RS information element list for the user equipment UE with the transmission mode M, and then configures one PDSCH configuration information element; one PDSCH configuration information element includes at least X resource mappings and quasi-identical locations.
  • the identifier of the QCL (quasi co-location) configuration re-MappingQCL-ConfigId, the identifier of the resource mapping and the QCL configuration is used to determine the mapping of the resource elements of the EPDCCH or the PDSCH, the RE mapping and the quasi-same location of the EPDCCH or PDSCH antenna port.
  • QCL quadsi co-location
  • Step B2 The base station sends the one PDSCH configuration information element and a zero-power CSI-RS information element list to the UE;
  • Step C2 The base station performs rate matching processing according to at least one zero-power CSI-RS information element list, and sends PDSCH data to the user equipment.
  • the base station If the PDSCH supports transmission from port 0 to port 3 or transmission mode 1 to 9, the base station according to the minimum ZP CSI-RS resource identifier of the zero-power CSI-RS information element list and the second small ZP CSI-RS The resource identifier performs rate matching processing of the PDSCH data.
  • the zero-power CSI-RS information element list defines a plurality of zero-power CSI-RS resources.
  • the base station also sends a version 10 CSI-RS configuration information element to the terminal, the base station according to the zero power CSI-
  • the minimum ZP CSI-RS resource identifier of the RS information element list and the ZP CSI-RS resource of the Release 10 CSI-RS configuration information element perform rate matching processing of the PDSCH data.
  • a set of zero-power CSI-RS information elements includes P zero-power CSI-RS information elements, M is a positive integer greater than or equal to 1, N is a positive integer greater than or equal to 1 and less than or equal to 2, and X is a positive integer greater than or equal to 1.
  • An integer, P is an integer greater than or equal to 1 and less than or equal to 4.
  • the resource mapping and the QCL configured identifier re-MappingQCL-ConfigId indicates a set of parameters, the parameter set including at least: a cell-specific reference signal CRS parameter, an MBSFN subframe configuration list, a QCL NZP CSI-RS identifier, and a Y ZP CSI-RS configuration identifier, OFDM start symbol of PDSCH; where Y is a positive integer greater than or equal to 1.
  • a rate matching method for downlink data in a transmission mode from 1 to 10 or a port from 0 to 3, to at least solve the above problem, applied to a terminal including:
  • Step D2 The user equipment UE with the transmission mode M receives one PDSCH configuration information element sent by the base station, and one zero-power CSI-RS information element list;
  • one PDSCH configuration information element includes at least X resource mappings and quasi-identical locations QCL (quasi) Co-location) an identifier of the configured re-MappingQCL-ConfigId, where the identifier of the resource mapping and the QCL configuration is used to determine a mapping RE mapping of the resource element of the EPDCCH or the PDSCH and a quasi-co-location of the EPDCCH antenna port;
  • Step E2 The user equipment UE performs rate matching processing according to at least one zero-power CSI-RS information element list, and performs decoding processing on the PDSCH data.
  • the terminal If the PDSCH supports transmission from port 0 to port 3 or transmission mode 1 to 9, the terminal according to the minimum ZP CSI-RS resource identifier of the zero-power CSI-RS information element list and the second small ZP CSI-RS The resource identifier performs rate matching processing of the PDSCH data.
  • the zero-power CSI-RS information element list defines a plurality of zero-power CSI-RS resources.
  • the base station also sends a version 10 CSI-RS configuration information element to the terminal, the base station according to the zero power CSI-
  • the minimum ZP CSI-RS resource identifier of the RS information element list and the ZP CSI-RS resource of the Release 10 CSI-RS configuration information element perform rate matching processing of the PDSCH data.
  • a set of zero-power CSI-RS information elements includes P CSI-RS information elements, M is a positive integer greater than or equal to 1, N is a positive integer greater than or equal to 1 and less than or equal to 2, and X is a positive integer greater than or equal to 1.
  • P is an integer greater than or equal to 1 and less than or equal to 4.
  • the resource mapping and the QCL configured identifier re-MappingQCL-ConfigId indicates a set of parameters, the parameter set including at least: a cell-specific reference signal CRS parameter, an MBSFN subframe configuration list, a QCL NZP CSI-RS identifier, and a Y ZP CSI-RS configuration identifier, OFDM start symbol of PDSCH; where Y is a positive integer greater than or equal to 1.
  • the embodiment of the present invention provides a rate matching method and apparatus applied to eIMTA, which can be applied to a base station and a terminal. Although different subframe groups may have different CSI-IM resources, the rate of different subframe groups is lacking.
  • the present invention firstly finds that the data rate matching accuracy of the downlink EPDCCH in the related art is relatively low, and proposes that different subframe groups do not need different resource mapping and QCL configuration, and only need to provide different ZP CSI-RS configurations. Identification parameters, and various possible solutions, solve the problem of low data rate matching accuracy under the condition of ensuring the least possible signaling overhead, significantly improve the performance of the system, and improve the COMP technology in the eIMTA system. Effect.
  • all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve. Thus, the invention is not limited to any specific combination of hardware and software.
  • the devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
  • each device/function module/functional unit in the above embodiment When each device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • An embodiment of the present invention provides a method and apparatus for downlink data rate matching applied to an eIMTA, which is applied to a base station and a terminal, and proposes that different subframe groups do not need different resource mapping and QCL configuration, and only need to provide different ZP CSI-RSs.
  • the identification parameters are configured, and various possible solutions solve the problem of low data rate matching accuracy under the condition of ensuring the minimum signaling overhead.

Abstract

Conformément à un mode de réalisation, la présente invention concerne un procédé et un appareil pour une mise en correspondance de débits binaires de liaison descendante, lesquels se rapportent au domaine de la mesure d'informations d'état de canal. Une station de base configure, pour un équipement utilisateur dans un mode de transmission M, un élément d'informations de configuration de canal de commande de liaison descendante physique amélioré (EPDCCH), ou une liste d'éléments d'informations de signal de référence d'informations d'état de canal (CSI-RS) de puissance nulle et un élément d'informations de configuration de canal partagé de liaison descendante physique (PDSCH) ; la station de base envoie l'élément d'informations de configuration d'EPDCCH, ou les informations de configuration de PDSCH et la liste d'éléments d'informations de CSI-RS de puissance nulle à l'équipement utilisateur ; la station de base réalise une mise en correspondance de débits selon l'élément d'informations de configuration d'EPDCCH et envoie des données d'EPDCCH à l'équipement utilisateur, ou réalise une mise en correspondance de débits selon l'élément d'informations de configuration de PDSCH ou la liste d'éléments d'informations de CSI-RS de puissance nulle et envoie des données de PDSCH à l'équipement utilisateur ; et l'équipement utilisateur réalise une mise en correspondance de débits selon l'élément d'informations de configuration d'EPDCCH et décode les données d'EPDCCH, ou réalise une mise en correspondance de débits selon l'élément d'informations de configuration de PDSCH ou la liste d'éléments d'informations de CSI-RS de puissance nulle et décode les données de PDSCH.
PCT/CN2014/087222 2014-04-15 2014-09-23 Procédé et appareil pour une mise en correspondance de débits binaires de liaison descendante WO2015158111A1 (fr)

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