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WO2019051796A1 - Procédé de démodulation de canal et dispositif associé - Google Patents

Procédé de démodulation de canal et dispositif associé Download PDF

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Publication number
WO2019051796A1
WO2019051796A1 PCT/CN2017/101930 CN2017101930W WO2019051796A1 WO 2019051796 A1 WO2019051796 A1 WO 2019051796A1 CN 2017101930 W CN2017101930 W CN 2017101930W WO 2019051796 A1 WO2019051796 A1 WO 2019051796A1
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WIPO (PCT)
Prior art keywords
format
base station
user equipment
downlink control
reference signal
Prior art date
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Ceased
Application number
PCT/CN2017/101930
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English (en)
Chinese (zh)
Inventor
高东培
罗亚军
杨春磊
朱永升
张志强
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to PCT/CN2017/101930 priority Critical patent/WO2019051796A1/fr
Priority to CN201780094464.5A priority patent/CN111052825B/zh
Publication of WO2019051796A1 publication Critical patent/WO2019051796A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present application relates to the field of wireless network technologies, and in particular, to a channel demodulation method and related devices.
  • the LTE R10 protocol introduces Transmission Mode 9 (TM9), which is designed to support higher-order Multiple-Input Multiple-Output (MIMO), support up to 8 streams of downlink single-user MIMO, and enhance downlink multi-users. MIMO performance.
  • R11 introduces TM10 for Downlink Coordinated Multipoint Transmission (DL CoMP) technology application and enhances it based on TM9.
  • Both TM10 and TM9 use multiple reference signals: Common Reference Signal (CRS), Demodulation Reference Signal (DMRS), and Channel State Information-Reference Signal (CSI-RS).
  • CRS Common Reference Signal
  • DMRS Demodulation Reference Signal
  • CSI-RS Channel State Information-Reference Signal
  • the CRS is a cell-level reference signal; the DMRS is used for channel estimation of a Physical Downlink Share Channel (PDSCH), and the CSI-RS is used by a terminal to acquire channel state information (CSI).
  • CSI-RS can greatly reduce the time/frequency density and can support up to 8 layers of spatial multiplexing.
  • TM10 introduces multiple sets of measurement configurations (CSI Process), Quasi co-located (QCL), VCID, and corresponding CSI feedback changes.
  • Multiple sets of CSI Process are used to enhance DL CoMP measurement, and coordinate through multiple transmission processing (TP) on the system side, such as Dynamic Point Selection (DPS), Joint Transmission (JT), Coordinated Scheduling/Coordinated Beamforming (CS/CB), etc., to improve the signal to interference plus noise ratio (SINR) or channel quality of the edge user equipment (User Equipment, UE) Channel Quanlity Indicator (CQI), thereby improving the throughput of the edge UE.
  • DPS Dynamic Point Selection
  • JT Joint Transmission
  • CS/CB Coordinated Scheduling/Coordinated Beamforming
  • SINR signal to interference plus noise ratio
  • UE User Equipment
  • CQI Channel Quanlity Indicator
  • the quasi-co-location relationship between CSI-RS can improve the equivalent channel estimation performance of the UE based on DMRS, thereby improving UE receiving performance.
  • the DMRS demodulation PDSCH can be compensated by the channel information obtained from the CRS and the CSI-RS.
  • TM2's 2T/4T JT solution only supports one set of CSI measurements.
  • the JT user equipment falls back to independent scheduling, there is no corresponding CSI measurement, channel mismatch, it is difficult to guarantee demodulation performance, and the DCI 2C format DMRS brings 8%-16% overhead.
  • the DMRS in the DCI 2D format brings 8%-16% overhead, consuming the gain of JT/DPS.
  • the embodiment of the invention provides a channel demodulation method and related equipment, which can reduce resource overhead and improve the gain of JT/DPS.
  • the embodiment of the present application provides a channel demodulation method, including: a user equipment first receiving configuration information sent by a first base station, where the configuration information includes at least one format of the added downlink control information; and then receiving the first base station. Format of the downlink control information to be sent; finally obtaining a reference signal corresponding to the format of the downlink control information for channel It is estimated to demodulate the downlink physical shared channel.
  • the user equipment measures channel state information according to the pre-configured first common reference signal and the channel state information reference signal; and sends channel state information to the first base station, where the channel state information is used by the base station to determine downlink control information. format.
  • the user equipment first receives the physical downlink control channel sent by the first base station; then performs blind detection on the physical downlink control channel to determine the format of the downlink control information.
  • the user equipment when the format of the downlink control information is the first format, the user equipment receives the second common reference signal sent by the first base station for channel estimation to demodulate the downlink physical shared channel; When the format of the information is the second format, the user equipment receives the demodulation reference signal sent by the first base station for channel estimation to demodulate the downlink physical shared channel.
  • the UE when the format of the DCI is 2/2A/1A, the UE receives the CRS sent by the base station for channel estimation, and then demodulates the PDSCH.
  • the format of the DCI is 2C
  • the UE receives the DMRS transmitted by the base station for channel estimation, and further demodulates the PDSCH.
  • the format of the DCI is 2/2A/1A
  • the UE receives the CRS sent by the base station for channel estimation, and then demodulates the PDSCH.
  • the format of the DCI is 2D
  • the UE receives the DMRS sent by the base station for channel estimation, and then demodulates the PDSCH.
  • the periodic CSI can be measured based on the CRS, and the aperiodic CSI can be reported based on the CSI-RS measurement.
  • the 2T/4T DPS or JT scheme of TM10 one CSI process is measured based on CRS, and one CSI process is measured based on CSI-RS, and CSI reporting is performed respectively.
  • the embodiment of the present application provides a channel demodulation method, including: the first base station sends configuration information to the user equipment, where the configuration information is used to indicate that the user equipment adds at least one format of the downlink control information; and sends the configuration information to the user equipment.
  • the format of the downlink control information is used by the user equipment to obtain a corresponding reference signal for channel estimation to demodulate the downlink physical shared channel.
  • the configuration information further includes a configuration of the channel state information reference signal, where the configuration information is further used to indicate that the user equipment measures the channel state information according to the pre-configured first common reference signal and the channel state information reference signal.
  • the user equipment is notified to use two sets of CSI measurements. When the JT user equipment falls back to independent scheduling, there is a corresponding CSI measurement to ensure demodulation performance.
  • the first base station receives channel state information sent by the user equipment; and determines the format of the downlink control information according to the channel state information.
  • the first base station determines, according to the channel state information measured by the first common reference signal, that the format of the downlink control information is the first format.
  • the first base station and the second base station perform joint scheduling on the user equipment, determines, according to the channel state information measured by the channel state information reference signal, that the format of the downlink control information is the second format.
  • the user equipment when the user equipment is jointly scheduled by Cell0 and Cell1, the user equipment reports two sets of measurement results based on CRS and CSI-RS, and Cell0 adopts the DCI format according to the CSI result measured by CSI-RS. It is 2C/1A.
  • the user equipment When the user equipment is independently scheduled by Cell0, the user equipment reports CRS-based and CSI-RS.
  • Cell0 uses the DCI format of 2/2A/1A according to the CSI result measured by CRS.
  • the user equipment when the user equipment is jointly scheduled by Cell0 and Cell1, the user equipment reports the CSI measurement result of the CSI-RS based on the two cells and the CSI measurement result based on the serving cell CRS, and the Cell0 is based on the CSI-RS.
  • the measured CSI results are in DCI format using DCI 2D/1A.
  • the user equipment When the user equipment is independently scheduled by Cell0, the user equipment reports the CSI measurement result of the CSI-RS based on the two cells and the CSI measurement result based on the serving cell CRS, and the Cell0 uses the DCI format as 2/2A according to the CSI result of the CRS measurement. /1A.
  • the first base station determines a scheduling manner for the user equipment according to the channel state information measured by the first common reference signal and the channel state information reference signal, and the scheduling manner includes joint scheduling or independent scheduling.
  • the first base station determines the format of the downlink control information according to the channel state information measured by the first common reference signal.
  • the first base station determines, according to the channel state information measured by the channel state information reference signal, that the format of the downlink control information is the second format.
  • the user equipment when the PDSCH is transmitted in the coordinated cell, the user equipment reports two sets of measurement results, one based on the CSI result of the two-cell CSI-RS measurement, one based on the CSI result of the serving cell CRS measurement, and the Cell0 according to the CSI -
  • the CSI result of the RS measurement is 2D/1A in the DCI format.
  • the user equipment reports two sets of measurement results, one based on the CSI result of the two-cell CSI-RS measurement, one based on the CSI result of the serving cell CRS measurement, and the Cell0 adopts the DCI format according to the CSI result measured by the CRS. It is 2/2A/1A.
  • the first base station determines, according to the channel state information measured by the first common reference signal and the channel state information reference signal, a cell that sends a downlink physical shared channel, where the cell includes a serving cell to which the first base station belongs or The coordinated cell to which the second base station belongs.
  • the embodiment of the present application provides a user equipment, where the user equipment is configured to implement the method and function performed by the user equipment in the foregoing first aspect, implemented by hardware/software, and the hardware/software includes the foregoing functions.
  • the corresponding unit is configured to implement the method and function performed by the user equipment in the foregoing first aspect, implemented by hardware/software, and the hardware/software includes the foregoing functions.
  • the embodiment of the present application provides a first base station, where the first base station is configured to implement the method and function performed by the first base station in the foregoing second aspect, implemented by hardware/software, and the hardware/software includes The unit corresponding to the above function.
  • the present application provides another user equipment, including: a processor, a memory, and a communication bus, wherein the communication bus is used to implement connection communication between the processor and the memory, and the processor executes a program stored in the memory for The steps in a channel demodulation method provided by the above first aspect are implemented.
  • the user equipment provided by the present application may include a module for performing user equipment behavior in the above method design.
  • Modules can be software and/or hardware.
  • the present application provides another first base station, including: a processor, a memory, and a communication bus, wherein the communication bus is used to implement connection communication between the processor and the memory, and the processor executes the program stored in the memory.
  • the steps in a channel demodulation method provided by the above second aspect are implemented.
  • the user equipment provided by the present application may include a module for performing the behavior of the first base station in the above method design.
  • Modules can be software and/or hardware.
  • the present application provides a computer readable storage medium having stored therein instructions that, when executed on a computer, cause the computer to perform the methods of the above aspects.
  • the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the methods of the above aspects.
  • FIG. 1 is a schematic structural diagram of a channel demodulation system according to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a JT provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a DPS provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a 2T/4T JT scheme of TM9 provided by an embodiment of the present application.
  • FIG. 5(A) is a schematic diagram of a 2T/4T JT scheme of the TM10 provided by the embodiment of the present application;
  • FIG. 5(B) is a schematic diagram of a 2T/4T DPS scheme of the TM10 provided by the embodiment of the present application;
  • FIG. 6 is a schematic flowchart of a channel demodulation method according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of another TMT 2T/4T JT scheme provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of another 2T/4T JT scheme of the TM10 provided by the embodiment of the present application.
  • FIG. 9 is a schematic diagram of another 2T/4T DPS scheme of the TM10 provided by the embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a user equipment according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of a first base station according to an embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of another first base station proposed by the present application.
  • FIG. 1 is a schematic structural diagram of a channel demodulation system according to an embodiment of the present disclosure.
  • the channel demodulation system includes a user equipment (User Equipment, UE), a first base station, and a second base station, and a user equipment.
  • the handover may be performed between a serving cell to which the first base station belongs and a coordinated cell to which the second base station belongs.
  • a user device may refer to a device that provides a voice and/or data connection to a user, or may be connected to a computing device such as a laptop or desktop computer, or it may be, for example, a Personal Digital Assistant (PDA). ) and other independent devices.
  • PDA Personal Digital Assistant
  • User equipment may also be referred to as systems, subscriber units, subscriber stations, mobile stations, mobile stations, remote stations, access points, remote terminals, access terminals, user terminals, user agents, or user devices.
  • the first base station and the second base station may be an access point, a Node B, an Evolution Bureau (eNB), or a 5G base station (gNB), which refers to one or more sectors on the air interface.
  • eNB Evolution Bureau
  • gNB 5G base station
  • the base station can act as a router between the wireless terminal and the rest of the access network, which can include an internet protocol network.
  • the base station can also coordinate the management of the attributes of the air interface.
  • the DL CoMP mainly includes two technologies of JT and DPS, and data of the UE is available on nodes of at least one CoMP collaboration set.
  • FIG. 2 is a schematic diagram of a JT provided by an embodiment of the present application. After the UE moves from Cell1 to the overlapping area of Cell1 and Cell2, Cell1 sends a PDCCH, Cell1 and the UE to the UE. Cell2 simultaneously transmits a PDSCH to the UE.
  • FIG. 3 is a schematic diagram of a DPS provided by an embodiment of the present application. After the UE moves from Cell1 to the overlapping area of Cell1 and Cell2, Cell1 transmits a PDCCH to the UE, and Cell2 transmits a PDSCH to the UE.
  • DPS Dynamic Cell Selection
  • the embodiments of the present application provide the following channel demodulation methods, including:
  • FIG. 4 is a schematic diagram of a 2T/4T JT scheme of TM9 provided by an embodiment of the present application.
  • the UE only reports a set of CSI-RS-based CSI measurements; the PDCCH is transmitted in the serving cell, the UE is based on CRS demodulation, supports the PDSCH in the DCI 2C/1A format; in the serving cell (Cell0) and the coordinated cell (Cell1)
  • the UE demodulates the PDSCH of the DCI 2C based on the DMRS; the PDSCH is independently transmitted in the serving cell, for example, a Transmission Time Interval (TTI), and the RB resource is not obtained from the coordinated cell, and needs to be rolled back to the serving cell.
  • TTI Transmission Time Interval
  • the UE is independently scheduled.
  • TM9 only supports one set of CSI measurements.
  • PMI Precoding Matrix Indicator
  • RI Rank Indication
  • FIG. 5(A) is a schematic diagram of a 2T/4T JT scheme of the TM10 provided by the embodiment of the present application.
  • the UE reports two sets of CSI-RS-based CSI measurements; the PDCCH is transmitted in the serving cell, the UE is based on CRS demodulation, and supports DCI 2D/1A; the PDSCH is jointly sent in the serving cell (Cell0) and the coordinated cell (Cell1).
  • the UE demodulates the PDSCH in the DCI 2D format based on the DMRS; the PDSCH is independently transmitted in the serving cell, for example, a TTI, and the RB resource is not obtained from the coordinated cell, and needs to be rolled back to the serving cell to perform independent scheduling on the UE.
  • FIG. 5(B) is a schematic diagram of a 2T/4T DPS scheme of the TM10 provided by the embodiment of the present application.
  • the UE reports two sets of CSI-RS-based CSI measurements; the PDCCH is transmitted in the serving cell, the UE is based on CRS demodulation, and supports DCI 2D/1A; the PDSCH is transmitted in the coordinated cell, and the UE demodulates the DCI 2D-based PDSCH based on the DMRS.
  • the PDSCH is transmitted in the serving cell, for example, a TTI, and the RB resource is not obtained from the coordinated cell, and needs to be rolled back to the serving cell to perform independent scheduling on the UE.
  • FIG. 6 is a schematic flowchart of a channel demodulation method according to an embodiment of the present disclosure, where the method includes but is not limited to the following steps:
  • the first base station sends configuration information to the user equipment, where the configuration information is used to indicate that the user equipment adds at least one format of downlink control information.
  • the at least one format includes a first format, for example, a DCI 2 or 2A format may be added.
  • the configuration information further includes a configuration of a channel state information reference signal, where the configuration information is further used to indicate that the user equipment is configured according to the pre-configured first common reference signal and the channel state information reference signal. No. Measuring channel status information.
  • the user equipment measures channel state information according to the pre-configured first common reference signal and the channel state information reference signal.
  • the user equipment and the first base station may pre-arrange that, in the 2T/4T JT scheme of the TM9, the reporting period CSI may be measured based on the CRS, and the aperiodic CSI may be reported based on the CSI-RS measurement.
  • the 2T/4T DPS or JT scheme of TM10 one CSI process is measured based on CRS, and one CSI process is measured based on CSI-RS, and CSI reporting is performed respectively.
  • the user equipment sends the channel state information to the first base station.
  • the base station determines, according to the channel state information, a format of the downlink control information.
  • the channel status information measured by the first base station according to the first common reference signal Determining, in the first format, the format of the downlink control information; when the first base station and the second base station perform joint scheduling on the user equipment, the first base station according to the channel state information reference signal The channel state information is measured, and the format of the downlink control information is determined to be a second format.
  • FIG. 7 is a schematic diagram of a 2T/4T JT scheme of the TM9 provided by the embodiment of the present application.
  • the user equipment reports the CRS and the CSI-RS. 2 sets of measurement results, Cell0 according to the CSI results measured by CSI-RS, using DCI format 2C/1A.
  • the user equipment reports two sets of measurement results based on CRS and CSI-RS. According to the CSI result measured by CRS, Cell0 adopts DCI format as 2/2A/1A.
  • the 2T/4T DPS scheme of TM9 is also supported due to the CRS and CSI-RS based measurement.
  • FIG. 8 is a schematic diagram of a 2T/4T JT scheme of the TM10 provided by the embodiment of the present application.
  • the user equipment When the user equipment is jointly scheduled by Cell0 and Cell1, the user equipment reports the CSI measurement result of the CSI-RS based on the two cells and the CSI measurement result based on the serving cell CRS, and the Cell0 adopts the DCI format according to the CSI result measured by the CSI-RS.
  • DCI 2D/1A When the user equipment is independently scheduled by Cell0, the user equipment reports the CSI measurement result of the CSI-RS based on the two cells and the CSI measurement result based on the serving cell CRS, and the Cell0 uses the DCI format as 2/2A according to the CSI result of the CRS measurement. /1A.
  • the first base station may determine, according to the channel state information measured by the first common reference signal and the channel state information reference signal, a scheduling manner for the user equipment, where the scheduling manner includes the joint scheduling or The independent scheduling. For example, in a TTI, when the JT user equipment obtains a scheduling opportunity, the first base station selects joint scheduling or independent according to at least one of two sets of CSI measurement, modulation and coding scheme (MCS) and neighboring RB resources. Scheduling.
  • MCS modulation and coding scheme
  • the channel measured by the first base station according to the first common reference signal Determining, by the status information, that the format of the downlink control information is the first format; when the cell that sends the downlink physical shared channel is a coordinated cell to which the second base station belongs, the first base station according to the channel state And determining the format of the downlink control information into a second format by using the channel state information measured by the information reference signal.
  • FIG. 9 is a schematic diagram of a 2T/4T DPS scheme of the TM10 provided by the embodiment of the present application.
  • the user equipment reports two sets of measurement results, one based on the two-cell CSI-RS.
  • the measured CSI result a CSI result based on the serving cell CRS measurement
  • the Cell0 uses the DCI format as 2D/1A according to the CSI result measured by the CSI-RS.
  • the user equipment When the PDSCH is transmitted in the serving cell, the user equipment reports two sets of measurement results, one based on the CSI result of the two-cell CSI-RS measurement, one based on the CSI result of the serving cell CRS measurement, and the Cell0 adopts the DCI format according to the CSI result measured by the CRS. It is 2/2A/1A.
  • the first base station determines, according to the channel state information measured by the first common reference signal and the channel state information reference signal, a cell that sends the downlink physical shared channel, where the cell includes the first The serving cell to which the base station belongs or the coordinated cell to which the second base station belongs. For example, in a TTI, when the JT user equipment obtains a scheduling opportunity, the first base station selects a cell to be transmitted by the PDSCH according to at least one of two sets of CSI measurement, MCS adjustment, and neighboring RB resources.
  • the first base station sends the format of the downlink control information to the user equipment.
  • the first base station may send a physical downlink control channel to the user equipment, where the physical downlink control channel indicates the format of the downlink control information.
  • the user equipment acquires a reference signal corresponding to a format of the downlink control information, performs channel estimation, and performs demodulation on a downlink physical shared channel.
  • the user equipment first receives a physical downlink control channel sent by the first base station; and then performs blind detection on the physical downlink control channel to determine a format of the downlink control information.
  • the format of the downlink control information is the first format
  • the user equipment receives a second common reference signal sent by the first base station to perform channel estimation to demodulate the downlink physical shared channel
  • the format of the downlink control information is the second format
  • the user equipment receives the demodulation reference signal sent by the first base station to perform channel estimation to demodulate the downlink physical shared channel.
  • the user equipment After receiving the PDCCH sent by Cell0, the user equipment performs blind detection on the PDCCH to determine the format of the DCI.
  • the UE receives the CRS transmitted by the base station for channel estimation, and then demodulates the PDSCH.
  • the UE receives the DMRS transmitted by the base station for channel estimation, and further demodulates the PDSCH.
  • the UE receives the CRS transmitted by the base station for channel estimation, and then demodulates the PDSCH.
  • the UE When the format of the DCI is 2D, the UE receives the DMRS sent by the base station for channel estimation, and then demodulates the PDSCH. As shown in FIG. 9, when the format of the DCI is 2/2A/1A, the UE receives the CRS transmitted by the base station for channel estimation, and then demodulates the PDSCH. When the format of the DCI is 2D, the UE receives the DMRS sent by the base station for channel estimation, and then demodulates the PDSCH.
  • the first base station sends configuration information to the user equipment, where the configuration information includes at least one format of the added downlink control information; and then the format of the downlink control information that is sent by the first base station to the user equipment; A reference signal corresponding to a format of the downlink control information may be acquired for channel estimation to demodulate the downlink physical shared channel.
  • FIG. 10 is a schematic structural diagram of a user equipment according to an embodiment of the present application.
  • the user equipment includes a receiving module 1001, a processing module 1002, and a sending module 1003, wherein a detailed description of each module is as follows.
  • the receiving module 1001 is configured to receive configuration information sent by the first base station, where the configuration information includes an increased downlink. Controlling at least one format of the information;
  • the receiving module 1001 is further configured to receive a format of the downlink control information sent by the first base station;
  • the processing module 1002 is configured to obtain a reference signal corresponding to a format of the downlink control information, perform channel estimation, and perform demodulation on the downlink physical shared channel.
  • the configuration information further includes a configuration of a channel state information reference signal
  • the processing module 1002 is further configured to: measure channel state information according to the pre-configured first common reference signal and the channel state information reference signal;
  • the sending module 1003 is configured to send the channel state information to the first base station, where the channel state information is used by the base station to determine a format of the downlink control information.
  • the at least one format includes a first format
  • the processing module 1002 is specifically configured to:
  • the format of the downlink control information is the first format, receiving a second common reference signal sent by the first base station to perform channel estimation to demodulate the downlink physical shared channel;
  • the demodulation reference signal sent by the first base station is received for channel estimation to demodulate the downlink physical shared channel.
  • the receiving module 1001 is specifically configured to:
  • each module may also perform the method and function performed by the user equipment in the foregoing embodiment, corresponding to the corresponding description of the method embodiment shown in FIG. 6.
  • FIG. 11 is a schematic structural diagram of a first base station according to an embodiment of the present application.
  • the first base station includes a sending module 1101, a receiving module 1102, and a processing module 1103, wherein a detailed description of each module is as follows.
  • the sending module 1101 is configured to send configuration information to the user equipment, where the configuration information is used to indicate that the user equipment adds at least one format of downlink control information.
  • the sending module 1101 is further configured to send the format of the downlink control information to the user equipment, where the format of the downlink control information is used by the user equipment to obtain a corresponding reference signal for channel estimation to solve a downlink physical shared channel. Tune.
  • the configuration information further includes a configuration of a channel state information reference signal, where the configuration information is further used to instruct the user equipment to measure channel state information according to the pre-configured first common reference signal and the channel state information reference signal.
  • the receiving module 1102 is configured to receive the channel state information sent by the user equipment.
  • the processing module 1103 is configured to determine a format of the downlink control information according to the channel state information.
  • the at least one format includes a first format
  • the processing module 1103 is specifically configured to:
  • the first base station and the second base station When the first base station and the second base station perform joint scheduling on the user equipment, determine, according to the channel state information measured by the channel state information reference signal, that the format of the downlink control information is a second format.
  • the processing module 1103 is further configured to: according to the first common reference signal and the channel state information. Determining a scheduling manner of the user equipment by using the channel state information measured by the signal, where the scheduling manner includes the joint scheduling or the independent scheduling.
  • the at least one format includes a first format
  • the processing module 1103 is specifically configured to:
  • the first base station determines the downlink control information according to the channel state information measured by the first common reference signal.
  • the format is the first format
  • the first base station determines the downlink control information according to the channel state information measured by the channel state information reference signal.
  • the format is the second format.
  • the processing module 1103 is further configured to determine, according to the channel state information measured by the first common reference signal and the channel state information reference signal, a cell that sends the downlink physical shared channel, where the cell includes a serving cell to which the first base station belongs or a coordinated cell to which the second base station belongs.
  • each module may also perform the method and function performed by the first base station in the foregoing embodiment, corresponding to the corresponding description of the method embodiment shown in FIG. 6.
  • FIG. 12 is a schematic structural diagram of another user equipment proposed by the present application.
  • the user equipment can include at least one processor 1201, at least one communication interface 1202, at least one memory 1203, and at least one communication bus 1204.
  • the processor 1201 may be a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, combinations of digital signal processors and microprocessors, and the like.
  • the communication bus 1204 may be a peripheral component interconnect standard PCI bus or an extended industry standard architecture EISA bus or the like. The bus can be divided into an address bus, a data bus, a control bus, and the like.
  • Communication bus 1204 is used to implement connection communication between these components.
  • the communication interface 1202 of the device in the embodiment of the present application is used for signaling or data communication with other node devices.
  • the memory 1203 may include volatile memory, such as non-volatile volatile random access memory (NVRAM), phase change random access memory (PRAM), and magnetoresistive random access memory (Magetoresistive).
  • NVRAM non-volatile volatile random access memory
  • PRAM phase change random access memory
  • RAM, MRAM, etc. may also include non-volatile memory, such as at least one disk storage device, Electrically Erasable Programmable Read-Only Memory (EEPROM), flash memory device, such as reverse or flash memory (NOR flash memory) or NAND flash memory, semiconductor devices, such as Solid State Disk (SSD).
  • EEPROM Electrically Erasable Programmable Read-Only Memory
  • flash memory device such as reverse or flash memory (NOR flash memory) or NAND flash memory
  • semiconductor devices such as Solid State Disk (SSD).
  • SSD Solid State Disk
  • the memory 1203 can also optionally be at least one storage device located remotely from the processor 1201.
  • a set of program codes is stored in the memory 1203, and the processor 1201 executes the programs executed by the above-described user equipment in the memory 1203.
  • processor 1201 is further configured to perform the following operations:
  • the method further includes:
  • processor 1201 is further configured to perform the following operations:
  • the format of the downlink control information is the first format, receiving a second common reference signal sent by the first base station to perform channel estimation to demodulate the downlink physical shared channel;
  • the demodulation reference signal sent by the first base station is received for channel estimation to demodulate the downlink physical shared channel.
  • processor 1201 is further configured to perform the following operations:
  • processor may also cooperate with the memory and the communication interface to perform the operations of the user equipment in the foregoing application embodiment.
  • FIG. 13 is a schematic structural diagram of another first base station proposed by the present application.
  • the user equipment can include at least one processor 1301, at least one communication interface 1302, at least one memory 1303, and at least one communication bus 1304.
  • the processor 1301 may be various types of processors mentioned above.
  • the communication bus 1304 may be a peripheral component interconnect standard PCI bus or an extended industry standard architecture EISA bus or the like. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in FIG. 13, but it does not mean that there is only one bus or one type of bus. Communication bus 1304 is used to implement connection communication between these components.
  • the communication interface 1302 of the device in the embodiment of the present application is used for signaling or data communication with other node devices.
  • the memory 1303 may be various types of memories mentioned above. The memory 1303 can also optionally be at least one storage device located remotely from the aforementioned processor 1301. A set of program codes is stored in the memory 1303, and the processor 1301 executes the programs executed by the above-described user equipment in the memory 1303.
  • the format of the downlink control information is sent to the user equipment, where the format of the downlink control information is used by the user equipment to obtain a corresponding reference signal for channel estimation to demodulate the downlink physical shared channel.
  • processor 1301 is further configured to perform the following operations:
  • processor 1301 is further configured to perform the following operations:
  • the first base station or the second base station performs independent scheduling on the user equipment, according to the first public parameter Determining the channel state information measured by the signal, determining that the format of the downlink control information is the first format;
  • the format of the downlink control information is a second format, when the first base station and the second base station perform joint scheduling on the user equipment.
  • processor 1301 is further configured to perform the following operations:
  • processor 1301 is further configured to perform the following operations:
  • the cell that sends the downlink physical shared channel is the serving cell to which the first base station belongs, determining, according to the channel state information measured by the first common reference signal, that the format of the downlink control information is the a format
  • the cell that sends the downlink physical shared channel is the coordinated cell to which the second base station belongs, determining, according to the channel state information measured by the channel state information reference signal, that the format of the downlink control information is the second format. .
  • processor 1301 is further configured to perform the following operations:
  • processor may also cooperate with the memory and the communication interface to perform the operations of the first base station in the foregoing application embodiment.
  • the computer program product includes one or more computer instructions.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé de démodulation de canal, comprenant les étapes suivantes : un équipement utilisateur reçoit des informations de configuration envoyées par une première station de base, les informations de configuration comprenant au moins un format d'informations de commande de liaison descendante ajoutées; recevoir un format, envoyé par la station de base, des informations de commande de liaison descendante; et acquérir un signal de référence correspondant au format des informations de commande de liaison descendante pour une estimation de canal de façon à démoduler un canal partagé physique de liaison descendante. Ainsi, la surcharge de ressource peut être réduite, et le gain peut être augmenté.
PCT/CN2017/101930 2017-09-15 2017-09-15 Procédé de démodulation de canal et dispositif associé Ceased WO2019051796A1 (fr)

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CN201780094464.5A CN111052825B (zh) 2017-09-15 2017-09-15 一种信道解调方法及相关设备

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104137440A (zh) * 2012-02-11 2014-11-05 Lg电子株式会社 在基于多小区的无线通信系统中接收下行链路数据信道的方法和设备
CN104782061A (zh) * 2012-11-02 2015-07-15 三星电子株式会社 用于协作多点传输的速率匹配和干扰测量资源的配置
US20150229451A1 (en) * 2012-10-04 2015-08-13 Lg Electronics Inc. Method and apparatus for transreceiving downlink signal by considering antenna port relationship in wireless communication system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013012264A2 (fr) * 2011-07-19 2013-01-24 엘지전자 주식회사 Procédé de communication utilisant de multiples points de transmission et appareil pour ce procédé
US20140064135A1 (en) * 2012-08-28 2014-03-06 Texas Instruments Incorporated Reception of Downlink Data for Coordinated Multi-Point Transmission in the Event of Fall-Back
US9923684B2 (en) * 2013-01-09 2018-03-20 Samsung Electronics Co., Ltd. Methods to support inter-eNodeB CoMP

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104137440A (zh) * 2012-02-11 2014-11-05 Lg电子株式会社 在基于多小区的无线通信系统中接收下行链路数据信道的方法和设备
US20150229451A1 (en) * 2012-10-04 2015-08-13 Lg Electronics Inc. Method and apparatus for transreceiving downlink signal by considering antenna port relationship in wireless communication system
CN104782061A (zh) * 2012-11-02 2015-07-15 三星电子株式会社 用于协作多点传输的速率匹配和干扰测量资源的配置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
LG ELECTRONICS ET AL.: "Fallback operation for TM10", 3GPP TSG RAN WG1 MEETING #71 R1-124977, 16 November 2012 (2012-11-16), XP050662894 *

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