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WO2017166977A1 - Procédé et système d'acquisition d'une rétroaction d'informations d'état de canal, et dispositif associé - Google Patents

Procédé et système d'acquisition d'une rétroaction d'informations d'état de canal, et dispositif associé Download PDF

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Publication number
WO2017166977A1
WO2017166977A1 PCT/CN2017/075761 CN2017075761W WO2017166977A1 WO 2017166977 A1 WO2017166977 A1 WO 2017166977A1 CN 2017075761 W CN2017075761 W CN 2017075761W WO 2017166977 A1 WO2017166977 A1 WO 2017166977A1
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WIPO (PCT)
Prior art keywords
feedback information
feedback
pilot signal
precoding matrix
information
Prior art date
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PCT/CN2017/075761
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English (en)
Chinese (zh)
Inventor
陈润华
李辉
高秋彬
陈文洪
塔玛拉卡·拉盖施
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China Academy of Telecommunications Technology CATT
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China Academy of Telecommunications Technology CATT
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports

Definitions

  • the present disclosure relates to the field of communications technologies, and in particular, to a method, a related device, and a system for acquiring channel state information feedback.
  • a receiver selects an appropriate precoding matrix from a set of pre-defined precoding matrices according to channel information, and feeds back an index of the selected precoding matrix in the set to the transmission.
  • This collection is called a codebook.
  • the transmitter determines a corresponding precoding matrix according to the received index, and uses the appropriate preprocessing of the transmitted signal to improve the validity and reliability of the information transmission.
  • the codebook is an essential element in achieving this process.
  • the base station 8 antenna is also enhanced to a two-level codebook.
  • the FD MIMO (Full Dimension Multi-Input-Multi-Output) antenna array is used at the base station (see Figure 1 and Figure 2), and the antenna port is increased to 16, and Can be arranged in one or two dimensions.
  • Massive MIMO technology with a large number of antenna elements can effectively improve the performance of wireless networks.
  • massive MIMO technology a non-precoded scheme is typically used.
  • the eNB configures an N-port pilot resource, for example, a CSI-RS (Channel State Information-Reference Signal) or a CRS (Cell-specific Reference Signal) resource.
  • N is the number of antenna elements of the eNB antenna array.
  • Each CSI-RS port is sent from one antenna unit and is therefore not pre-coded.
  • the UE measures the complete channel and reports the N-port Precoding Matrix Indicator (PMI)/Channel Quality Indicator (CQI).
  • PMI Precoding Matrix Indicator
  • CQI Channel Quality Indicator
  • CSI feedback relies on a single codebook direct feedback.
  • the disadvantage is that the UE performs the codebook.
  • the complexity of the search is high and the PMI overhead is large, since the size of the codebook usually increases with the N exponent.
  • the present disclosure provides a method for acquiring channel state information feedback, a related device, and a system, which solves the problem of high complexity and high overhead of the feedback method in the prior art.
  • a method for acquiring channel state information feedback comprising: transmitting a first pilot signal; receiving first feedback information, where the first feedback information reflects the first pilot a channel state measured on the signal; transmitting a second pilot signal; receiving second feedback information, the second feedback information reflecting a channel state of the second pilot signal.
  • the first feedback information is used to obtain a beamforming or virtualization weight of the second pilot signal; the method further includes: pairing the second pilot according to the first feedback information The signal is beamformed or virtualized.
  • the method further includes determining a transmission format of the data transmission according to the second feedback information or according to the first feedback information and the second feedback information, and shaping the downlink data according to the transmission format.
  • the transmission format includes one or more of a precoding matrix, a time frequency resource allocation, and a modulation and coding mode.
  • the method further includes: configuring the first pilot signal and the second pilot signal, wherein the first pilot signal has N1 ports, and the second pilot signal has N2 ports , N1, N2 are positive integers greater than or equal to 1, and the values of N1 and N2 are the same or different.
  • the first feedback information includes one or more of the following: the first precoding matrix indicates the PMI1, the first channel quality information symbol CQI1, and the indication information of the second pilot signal in the first ⁇ indication RI1,
  • the first precoding matrix indicates that PMI1 points to one N1 port precoding matrix in the N1 port codebooks, and the first channel quality information symbol CQI1 corresponds to the first precoding matrix indicator PMI1,
  • the first indication RI1 reflects that the first precoding matrix indicates the ⁇ of the PMI1;
  • the second feedback information includes one or more of the following: the second precoding matrix indicates the PMI2, the second channel quality information symbol CQI2, and the second ⁇ indicating RI2, wherein the second precoding matrix indicates that PMI2 points to one N2 port precoding matrix in the N2 port codebook, and the second channel quality information symbol CQI2 and the second precoding matrix indicate PMI2
  • the second ⁇ indication RI2 reflects that the second precoding matrix indicates the ⁇ of PMI2.
  • the method further includes: configuring a first pilot resource and a second pilot resource, where the first pilot signal uses the first pilot resource, and the second pilot signal uses The second pilot resource is configured, or the third pilot resource is configured, where the first pilot signal and the second pilot signal correspond to N1 ports and N2 ports in the third pilot resource; or, configuration a fourth pilot resource, wherein the first pilot signal and the second pilot signal can both use a fourth pilot resource, and the number of antenna ports of the fourth pilot resource is dynamically or semi-statically changed between subframes. .
  • the method further includes: configuring a feedback manner of the first feedback information and the second feedback information, where the first feedback information and the second feedback information are periodic feedback, the first feedback information and the second The reporting period and the reporting offset are jointly or independently configured; or the first feedback information and the second feedback information are aperiodic feedback, and the first feedback information and/or the second feedback information is triggered by the access device.
  • the first feedback information is periodic feedback
  • the second feedback information is aperiodic feedback
  • the aperiodic feedback is triggered by the access device
  • the first feedback information is aperiodic feedback
  • the first The second feedback information is periodic feedback
  • the aperiodic feedback is triggered by the access device.
  • the method further includes: configuring feedback parameters of the first feedback information and the second feedback information, including codebook parameters, channel and/or interference measurement configuration parameters, enabling/disabling PMI feedback parameters, enabling All or part of the parameters of the NR feedback parameter and the enabled/disabled CQI feedback parameter; the feedback parameter of the first feedback information and the second feedback information.
  • a method for acquiring channel state information feedback comprising: receiving a first pilot signal; transmitting first feedback information, where the first feedback information reflects the a channel state measured on the first pilot signal; receiving a second pilot signal; transmitting second feedback information, the second feedback information reflecting a channel state of the second pilot signal.
  • the first feedback information is used to obtain a beamforming or virtualization weight of the second pilot signal.
  • the method further includes: receiving downlink data that is shaped according to the second feedback information or the transmission format determined according to the first feedback information and the second feedback information.
  • the transmission format includes one or more of a precoding matrix, a time frequency resource allocation, and a modulation and coding mode.
  • the first pilot signal has N1 ports
  • the second pilot signal has N2 Ports
  • N1, N2 are positive integers greater than or equal to 1
  • the values of N1 and N2 are the same or different.
  • the first feedback information includes one or more of the following: the first precoding matrix indicates the PMI1, the first channel quality information symbol CQI1, and the indication information of the second pilot signal in the first ⁇ indication RI1,
  • the first precoding matrix indicates that PMI1 points to one N1 port precoding matrix in the N1 port codebooks, and the first channel quality information symbol CQI1 corresponds to the first precoding matrix indicator PMI1,
  • the first indication RI1 reflects that the first precoding matrix indicates the ⁇ of the PMI1;
  • the second feedback information includes one or more of the following: the second precoding matrix indicates the PMI2, the second channel quality information symbol CQI2, and the second ⁇ indicating RI2, wherein the second precoding matrix indicates that PMI2 points to one N2 port precoding matrix in the N2 port codebook, and the second channel quality information symbol CQI2 and the second precoding matrix indicate PMI2
  • the second ⁇ indication RI2 reflects that the second precoding matrix indicates the ⁇ of PMI2.
  • the first pilot signal uses a first pilot resource
  • the second pilot signal uses a second pilot resource
  • the first pilot signal and the second pilot signal correspond to a third N1 ports and N2 ports in the pilot resource
  • the first pilot signal and the second pilot signal can use the fourth pilot resource
  • the number of antenna ports of the fourth pilot resource is in the sub Dynamic or semi-static changes between frames.
  • the method further includes: receiving a feedback manner of the first feedback information and the second feedback information, where the first feedback information and the second feedback information are periodic feedback, and the first feedback information and The reporting period and the reporting offset of the second feedback information are jointly or independently configured; or the first feedback information and the second feedback information are aperiodic feedback, and the first feedback information and/or the second is triggered by the access device.
  • the feedback information is reported; or the first feedback information is periodic feedback, the second feedback information is aperiodic feedback, and the aperiodic feedback is triggered by the access device; or the first feedback information is aperiodic feedback.
  • the second feedback information is periodic feedback, and the aperiodic feedback is triggered by the access device.
  • the method further includes: receiving feedback parameters of the first feedback information and the second feedback information, including codebook parameters, channel and/or interference measurement configuration parameters, enabling/disabling PMI feedback parameters, enabling /Failure RI feedback parameters and all or part of the parameters of the enabled/disabled CQI feedback parameters.
  • an access device includes: a first sending module, configured to send a first pilot signal; and a first receiving module, configured to receive a first feedback information, the first feedback information reflects a channel state measured on the first pilot signal; a second sending module is configured to send a second pilot signal; and a second receiving module is configured to receive the second feedback Information, the second feedback information reflects a channel state of the second pilot signal.
  • the first feedback information is used to obtain a beamforming or a virtualization weight of the second pilot signal;
  • the access device further includes: a shaping module, configured to use, according to the first feedback Information is beamformed or virtualized to the second pilot signal.
  • the access device further includes: a determining module, configured to determine, according to the second feedback information, or according to the first feedback information and the second feedback information, a transmission format of the data transmission, and according to the transmission format
  • the downlink data is shaped.
  • the transmission format includes one or more of a precoding matrix, a time frequency resource allocation, and a modulation and coding mode.
  • the access device further includes: a first configuration module, configured to configure the first pilot signal and the second pilot signal, where the first pilot signal has N1 ports, The second pilot signal has N2 ports, N1, N2 are positive integers greater than or equal to 1, and the values of N1 and N2 are the same or different.
  • a first configuration module configured to configure the first pilot signal and the second pilot signal, where the first pilot signal has N1 ports, The second pilot signal has N2 ports, N1, N2 are positive integers greater than or equal to 1, and the values of N1 and N2 are the same or different.
  • the first feedback information includes one or more of the following: the first precoding matrix indicates the PMI1, the first channel quality information symbol CQI1, and the indication information of the second pilot signal in the first ⁇ indication RI1,
  • the first precoding matrix indicates that PMI1 points to one N1 port precoding matrix in the N1 port codebooks, and the first channel quality information symbol CQI1 corresponds to the first precoding matrix indicator PMI1,
  • the first indication RI1 reflects that the first precoding matrix indicates the ⁇ of the PMI1;
  • the second feedback information includes one or more of the following: the second precoding matrix indicates the PMI2, the second channel quality information symbol CQI2, and the second ⁇ indicating RI2, wherein the second precoding matrix indicates that PMI2 points to one N2 port precoding matrix in the N2 port codebook, and the second channel quality information symbol CQI2 and the second precoding matrix indicate PMI2
  • the second ⁇ indication RI2 reflects that the second precoding matrix indicates the ⁇ of PMI2.
  • the access device further includes: a second configuration module, configured to configure a first pilot resource and a second pilot resource, where the first pilot signal uses the first pilot resource, The second pilot signal uses the second pilot resource, or configures a third pilot resource, where the first pilot signal and the second pilot signal correspond to N1 of the third pilot resources. Port and N2 ports; Or configuring a fourth pilot resource, where the first pilot signal and the second pilot signal can use a fourth pilot resource, where the number of antenna ports of the fourth pilot resource is dynamic between subframes or Semi-static change.
  • a second configuration module configured to configure a first pilot resource and a second pilot resource, where the first pilot signal uses the first pilot resource, The second pilot signal uses the second pilot resource, or configures a third pilot resource, where the first pilot signal and the second pilot signal correspond to N1 of the third pilot resources. Port and N2 ports; Or configuring a fourth pilot resource, where the first pilot signal and the second pilot signal can use a fourth pilot resource, where the number of antenna ports of the fourth pilot resource is dynamic between subframe
  • the access device further includes: a third configuration module, configured to configure a feedback manner of the first feedback information and the second feedback information, where the first feedback information and the second feedback information are periodic feedback, The reporting period and the reporting offset of the first feedback information and the second feedback information are jointly or independently configured; or the first feedback information and the second feedback information are aperiodic feedback, and the first device triggers the first The feedback information and/or the second feedback information are reported; or the first feedback information is periodic feedback, the second feedback information is aperiodic feedback, and the aperiodic feedback is triggered by the access device; or the first feedback The information is aperiodic feedback, the second feedback information is periodic feedback, and the aperiodic feedback is triggered by the access device.
  • a third configuration module configured to configure a feedback manner of the first feedback information and the second feedback information, where the first feedback information and the second feedback information are periodic feedback, The reporting period and the reporting offset of the first feedback information and the second feedback information are jointly or independently configured; or the first feedback information and the second feedback information are
  • the access device further includes: a fourth configuration module, configured to configure feedback parameters of the first feedback information and the second feedback information, including codebook parameters, channel, and/or interference measurement configuration parameters, All or part of the energy/failure PMI feedback parameter, the enable/fail RI feedback parameter, and the enable/fail CQI feedback parameter; and the feedback parameter of the first feedback information and the second feedback information.
  • a fourth configuration module configured to configure feedback parameters of the first feedback information and the second feedback information, including codebook parameters, channel, and/or interference measurement configuration parameters, All or part of the energy/failure PMI feedback parameter, the enable/fail RI feedback parameter, and the enable/fail CQI feedback parameter; and the feedback parameter of the first feedback information and the second feedback information.
  • a terminal device is further provided, where the terminal device includes: a third receiving module, configured to receive a first pilot signal; and a third sending module, configured to send the first feedback information
  • the first feedback information reflects the channel state measured on the first pilot signal
  • the fourth receiving module is configured to receive the second pilot signal
  • the fourth sending module is configured to send the second feedback information, where The second feedback information reflects a channel state of the second pilot signal.
  • the first feedback information is used to obtain a beamforming or virtualization weight of the second pilot signal.
  • the terminal device further includes: a fifth receiving module, configured to receive downlink data that is shaped according to the second feedback information or the transmission format determined according to the first feedback information and the second feedback information.
  • a fifth receiving module configured to receive downlink data that is shaped according to the second feedback information or the transmission format determined according to the first feedback information and the second feedback information.
  • the transmission format includes one or more of a precoding matrix, a time frequency resource allocation, and a modulation and coding mode.
  • the first pilot signal has N1 ports
  • the second pilot signal has N2 ports
  • N1, N2 are positive integers greater than or equal to 1
  • the values of N1 and N2 are the same or different.
  • the first feedback information includes one or more of the following: the first precoding matrix indicates the PMI1, the first channel quality information symbol CQI1, and the indication information of the second pilot signal in the first ⁇ indication RI1,
  • the first precoding matrix indicates that PMI1 points to one N1 port precoding matrix in the N1 port codebooks, and the first channel quality information symbol CQI1 corresponds to the first precoding matrix indicator PMI1,
  • the first indication RI1 reflects that the first precoding matrix indicates the ⁇ of the PMI1;
  • the second feedback information includes one or more of the following: the second precoding matrix indicates the PMI2, the second channel quality information symbol CQI2, and the second ⁇ indicating RI2, wherein the second precoding matrix indicates that PMI2 points to one N2 port precoding matrix in the N2 port codebook, and the second channel quality information symbol CQI2 and the second precoding matrix indicate PMI2
  • the second ⁇ indication RI2 reflects that the second precoding matrix indicates the ⁇ of PMI2.
  • the first pilot signal uses a first pilot resource
  • the second pilot signal uses a second pilot resource
  • the first pilot signal and the second pilot signal correspond to N1 ports and N2 ports in the third pilot resource
  • both the first pilot signal and the second pilot signal can use the fourth pilot resource, and the number of antenna ports of the fourth pilot resource Dynamic or semi-static changes between subframes.
  • the terminal device further includes: a sixth receiving module, configured to receive a feedback manner of the first feedback information and the second feedback information, where the first feedback information and the second feedback information are periodic feedback
  • the reporting period and the reporting offset of the first feedback information and the second feedback information are jointly or independently configured; or the first feedback information and the second feedback information are aperiodic feedback, and the access device triggers the The feedback information and/or the second feedback information are reported; or the first feedback information is periodic feedback, the second feedback information is aperiodic feedback, and the aperiodic feedback is triggered by the access device; or, the first The feedback information is aperiodic feedback, the second feedback information is periodic feedback, and the aperiodic feedback is triggered by the access device.
  • the terminal device further includes: a seventh receiving module, configured to receive feedback parameters of the first feedback information and the second feedback information, including codebook parameters, channel and/or interference measurement configuration parameters, and enable All or part of the parameters of the failed/inactive PMI feedback parameter, the enable/fail RI feedback parameter, and the enable/disable CQI feedback parameter.
  • a seventh receiving module configured to receive feedback parameters of the first feedback information and the second feedback information, including codebook parameters, channel and/or interference measurement configuration parameters, and enable All or part of the parameters of the failed/inactive PMI feedback parameter, the enable/fail RI feedback parameter, and the enable/disable CQI feedback parameter.
  • an acquisition system for channel state information feedback including: an access device, configured to send a first pilot signal; and the access device is further used to Receiving the first feedback information, the first feedback information reflects a channel state measured on the first pilot signal; the access device is further configured to send a second pilot signal; Receiving the second feedback information, the second feedback information reflects a channel state of the second pilot signal; the terminal device is configured to receive the first pilot signal; the terminal device is further configured to send the first feedback information The first feedback information reflects a channel state measured on the first pilot signal; the terminal device is further configured to receive a second pilot signal, and the terminal device is further configured to send second feedback information, where The second feedback information reflects a channel state of the second pilot signal.
  • One of the above technical solutions has the following advantages or advantages: By combining the non-precoded CSI-RS scheme and the beamforming CSI-RS scheme, the complexity and overhead of the feedback scheme in this embodiment are effectively reduced.
  • FIG. 1 is a schematic diagram of a 12-antenna port in a two-dimensional antenna port in the Rel-13 version
  • FIG. 2 is a schematic diagram of a 16-antenna port in a two-dimensional antenna port in the Rel-13 version
  • FIG. 3 is a schematic structural diagram of a network according to an embodiment of the present disclosure.
  • FIG. 4 is a flowchart of a method for acquiring channel state information feedback according to some embodiments of the present disclosure
  • FIG. 5 is a flowchart of a method for acquiring channel state information feedback according to some embodiments of the present disclosure
  • FIG. 6 is a flowchart of a method for acquiring channel state information feedback according to some embodiments of the present disclosure
  • FIG. 7 is a schematic diagram of an access device according to some embodiments of the present disclosure.
  • FIG. 8 is a schematic diagram of an access device according to some embodiments of the present disclosure.
  • FIG. 9 is a schematic diagram of a terminal device according to some embodiments of the present disclosure.
  • FIG. 10 is a schematic diagram of a terminal device according to some embodiments of the present disclosure.
  • FIG. 11 is a schematic diagram of an acquisition system for channel state information feedback according to some embodiments of the present disclosure.
  • FIG. 3 is a schematic structural diagram of a network according to an embodiment of the present disclosure.
  • the terminal device 31 and the access device 32 are included.
  • the terminal device 31 (UE) It can be a mobile phone (or cell phone), or other device capable of transmitting or receiving wireless signals, including user equipment (terminal), personal digital assistant (PDA), wireless modem, wireless communication device, handheld device, laptop computer, cordless Telephone, wireless local loop (WLL) station, CPE (Customer Premise Equipment) capable of converting mobile signals into WiFi signals, mobile smart hotspots, smart home appliances, or other non-human operations can spontaneously communicate with mobile communication networks Communication equipment, etc.
  • PDA personal digital assistant
  • WLL wireless local loop
  • CPE Customer Premise Equipment
  • the access device 32 may be a base station, and the base station is not limited in form, and may be a Macro Base Station, a Pico Base Station, a Node B (a name of a 3G mobile base station), Enhanced Base Station (ENB), Home Enhanced Base Station (Femto eNB or Home eNode B or Home eNB or HNEB), Relay Station, Access Point, RRU (Remote Radio Unit), RRH (Remote Radio Head) Pull the head) and so on.
  • the base station is not limited in form, and may be a Macro Base Station, a Pico Base Station, a Node B (a name of a 3G mobile base station), Enhanced Base Station (ENB), Home Enhanced Base Station (Femto eNB or Home eNode B or Home eNB or HNEB), Relay Station, Access Point, RRU (Remote Radio Unit), RRH (Remote Radio Head) Pull the head) and so on.
  • RRU Remote Radio Unit
  • the execution body of the method is an access device, and the specific steps are as follows:
  • Step S401 Send a first pilot signal.
  • the access device may configure the first pilot signal and the second pilot signal.
  • the first pilot signal has N1 ports
  • the second pilot signal has N2 ports, where N1, N2 are positive integers greater than or equal to 1, and the values of N1 and N2 are the same or different.
  • Step S402 Receive first feedback information, where the first feedback information reflects a channel state measured on the first pilot signal.
  • Step S403 Send a second pilot signal.
  • the foregoing first feedback information may be used to obtain a beamforming or virtualization weight of the second pilot signal.
  • the second pilot signal may be beamformed or virtualized according to the first feedback information, and then the shaped or virtualized second pilot signal is transmitted, thereby implementing beamforming CSI-RS.
  • the scheme enables the beamforming CSI-RS scheme to be combined with the non-precoded CSI-RS scheme, thereby effectively reducing the present.
  • the first pilot signal and the second pilot signal may be, but are not limited to, CSI-RS, CRS, and the like.
  • Step S404 Receive second feedback information, where the second feedback information reflects a channel state of the second pilot signal.
  • the first feedback information includes one or more of the following: the first precoding matrix indicates the PMI1, the first channel quality information symbol CQI1, and the first ⁇ indication RI1, the indication information of the second pilot signal,
  • the first precoding matrix indicates that PMI1 points to one N1 port precoding matrix in the N1 port codebooks, and the first channel quality information symbol CQI1 corresponds to the first precoding matrix indicator PMI1, where the first indication indicates RI1 reflects that the first precoding matrix indicates the ⁇ of PMI1.
  • the second feedback information includes one or more of: a second precoding matrix indicating PMI2, a second channel quality information symbol CQI2, and a second ⁇ indication RI2, wherein the second precoding matrix indicates that PMI2 points to N2 port codes An N2 port precoding matrix, where the second channel quality information symbol CQI2 corresponds to the second precoding matrix indication PMI2, and the second UI indication RI2 reflects that the second precoding matrix indicates PMI2 Hey.
  • Step S405 Determine a transmission format of the data transmission according to the second feedback information or according to the first feedback information and the second feedback information, and shape the downlink data according to the transmission format.
  • the foregoing transmission format includes one or more of a precoding matrix, a time-frequency resource allocation, and a modulation and coding mode. It should be noted that the above step S405 is an optional step in this embodiment.
  • the method further includes: configuring a first pilot resource and a second pilot resource, where the first pilot signal uses the first pilot resource, and the second pilot The signal is used by the second pilot resource; or the third pilot resource is configured, where the first pilot signal and the second pilot signal correspond to N1 ports and N2 ports in the third pilot resource; or The fourth pilot resource, wherein the first pilot signal and the second pilot signal can both use the fourth pilot resource, and the number of antenna ports of the fourth pilot resource changes dynamically or semi-statically between the subframes.
  • the method further includes: configuring a feedback manner of the first feedback information and the second feedback information, where the first feedback information and the second feedback information are periodic feedback, the first The feedback information and the reporting period of the second feedback information are combined or independently configured; or the first feedback information and the second feedback information are aperiodic feedback, and the first feedback information is triggered by the access device and/or The second feedback information is reported; or the first feedback information is periodic feedback, the second feedback information is aperiodic feedback, and the aperiodic feedback is triggered by the access device; or the first feedback information is aperiodic feedback.
  • the second feedback information is periodic feedback, and the non-periodic feedback is The access device triggers.
  • the method further includes: configuring feedback parameters of the first feedback information and the second feedback information, including codebook parameters, channel and/or interference measurement configuration parameters, and enabling/disabling PMI feedback parameters. And all or part of the parameters of the enable/disable RI feedback parameter and the enable/disable CQI feedback parameter; and the feedback parameter of the first feedback information and the second feedback information.
  • the execution body of the method is a terminal device, and the specific steps are as follows:
  • Step S501 Receive a first pilot signal.
  • Step S502 Send first feedback information, where the first feedback information is a channel state measured on the first pilot signal.
  • Step S503 receiving a second pilot signal.
  • the first pilot signal has N1 ports
  • the second pilot signal has N2 ports, where N1, N2 are positive integers greater than or equal to 1, and the values of N1 and N2 are the same or different.
  • the first pilot signal uses the first pilot resource
  • the second pilot signal uses the second pilot resource
  • the first pilot signal and the second pilot signal correspond to the third pilot N1 ports and N2 ports in the frequency resource
  • the fourth pilot resource can be used for both the first pilot signal and the second pilot signal, and the number of antenna ports of the fourth pilot resource is dynamic or semi-static between subframes
  • N1 and N2 are positive integers greater than or equal to 1, and the values of N1 and N2 are the same or different.
  • the first pilot signal and the second pilot signal may be, but are not limited to, CSI-RS, CRS, and the like.
  • Step S504 Send second feedback information, where the second feedback information reflects a channel state of the second pilot signal.
  • the first feedback information is used to obtain a beamforming or virtualization weight of the second pilot signal.
  • the first feedback information includes one or more of the following: the first precoding matrix indicates the PMI1, the first channel quality information symbol CQI1, and the first ⁇ indication RI1, the indication information of the second pilot signal,
  • the first precoding matrix indicates that PMI1 points to one N1 port precoding matrix in the N1 port codebooks, and the first channel quality information symbol CQI1 corresponds to the first precoding matrix indicator PMI1, where the first indication indicates RI1 reflects that the first precoding matrix indicates the ⁇ of PMI1.
  • the second feedback information includes one or more of: a second precoding matrix indicating PMI2, a second channel quality information symbol CQI2, and a second ⁇ indication RI2, wherein the second precoding matrix indicates that PMI2 points to N2 port codes An N2 port precoding matrix, where the second channel quality information symbol CQI2 corresponds to the second precoding matrix indication PMI2, and the second UI indication RI2 reflects that the second precoding matrix indicates PMI2 Hey.
  • Step S505 Receive downlink data that is shaped according to the second feedback information or the transmission format determined according to the first feedback information and the second feedback information.
  • step S505 is an optional step.
  • the foregoing transmission format includes one or more of a precoding matrix, a time frequency resource allocation, and a modulation and coding mode.
  • the method further includes: receiving a feedback manner of the first feedback information and the second feedback information, where the first feedback information and the second feedback information are periodic feedback, and the first feedback information is And the reporting period and the reporting offset of the second feedback information are jointly or independently configured; or the first feedback information and the second feedback information are aperiodic feedback, and the first feedback information and/or the second is triggered by the access device.
  • the feedback information is reported; or the first feedback information is periodic feedback, the second feedback information is aperiodic feedback, and the aperiodic feedback is triggered by the access device; or the first feedback information is aperiodic feedback, the first The second feedback information is periodic feedback, and the aperiodic feedback is triggered by the access device.
  • the method further includes: receiving feedback parameters of the first feedback information and the second feedback information, including codebook parameters, channel and/or interference measurement configuration parameters, and enabling/disabling PMI. All or part of the feedback parameters, enable/fail RI feedback parameters, and enable/disable CQI feedback parameters.
  • the eNB is used as an access device, and the CSI-RS is used as a pilot signal.
  • FIG. 6 a method for obtaining channel state information feedback is shown, and the specific steps are as follows:
  • Step S601 The eNB configures a first CSI-RS signal (having N1 ports) to the UE, The eNB transmits a first CSI-RS signal to the UE.
  • Step S602 The UE measures the first CSI-RS signal for channel estimation, and selects a precoding matrix indication (PMI) that points to the N1 port precoding matrix in the N1 port codebook, and the UE reports the N1 port PMI to the eNB. , defined as PMI1.
  • PMI precoding matrix indication
  • the UE may additionally report the CQI corresponding to the PMI1 to the eNB, which is defined as CQI1.
  • the UE may additionally report the rank indication RI, which reflects the rank of the PMI1 (the number of columns of the precoding matrix), and is defined as RI1.
  • the rank indication RI which reflects the rank of the PMI1 (the number of columns of the precoding matrix), and is defined as RI1.
  • the rank of PMI1 will be pre-configured by the eNB or fixed in the protocol.
  • the rank of PMI1 is fixed at 1.
  • Step S603 The eNB receives a corresponding first CSI feedback of the first CSI-RS signal.
  • the first CSI feedback includes at least PMI1.
  • the first CSI feedback further includes: CQI1 and/or RI1.
  • Step S604 the eNB determines a beamforming/virtualization matrix using PMI1 (or RI1).
  • Step S505 the eNB configures a second CSI-RS signal (having N2 ports) and indicates the second CSI-RS signal to the UE.
  • Step S606 The eNB performs beamforming/virtualization on the second CSI-RS signal by using the beamforming/virtualization matrix determined in step S504.
  • the eNB sends the shaped second CSI-RS signal to the UE.
  • Step S607 The UE measures the shaped second CSI-RS signal, and reports PMI2 (PMI2 points to one N2 port precoding matrix in the N2 port codebook).
  • CQI2 and RI2 may also be reported in this step.
  • Step S608 the eNB receives the PMI2 fed back by the UE.
  • the information that can be fed back by the UE in this step further includes CQI2/RI2.
  • Step S609 The eNB determines a transmission format of the downlink data according to the feedback of the second CSI-RS signal, or the eNB determines a transmission format of the downlink data according to the feedback of the first CSI-RS signal and the feedback of the second CSI-RS signal.
  • the foregoing transmission format includes one or more of the following: a precoding matrix, a time-frequency resource allocation, and a modulation and coding mode, and the foregoing plurality may be understood as a combination of the foregoing three items or a subset of the combinations.
  • Step S610 The transport format determined by the eNB in step S609 transmits downlink data to the UE.
  • the feedback configuration in this embodiment is introduced in the following three combinations.
  • a CSI process is configured to be associated with two CSI-RS resources.
  • One CSI-RS resource uses N1 ports without precoding CSI-RS, and the other uses N2 port beamforming CSI-RS.
  • the first pilot signal corresponds to the first CSI-RS resource
  • the second pilot signal corresponds to the second CSI-RS resource.
  • Each of the above CSI-RS resources independently configures the following parameters: a subframe configuration, a CSI-RS configuration, a PDSCH and CSI-RS power ratio Pc, and an antenna port number.
  • a subframe configuration a CSI-RS configuration
  • a PDSCH a PDSCH and CSI-RS power ratio Pc
  • an antenna port number a CSI-RS configuration
  • Pc CSI-RS power ratio
  • measurement limits can be independently configured for each CSI-RS resource.
  • the MR configuration of the first CSI-RS resource (not precoded) is OFF, and the MR configuration of the second CSI-RS resource (beamforming) is ON.
  • the MR configurations of the two CSI-RS resources may be the same or different.
  • the measurement limit is configured to be ON, the UE uses a specific set of time resources for channel measurement, otherwise the time resource used by the UE for channel measurement is not limited.
  • the restricted configuration is enabled, the UE uses the most recent subframe containing the CSI-RS pilot for channel measurement.
  • each CSI report may be based on a first CSI-RS resource or a second CSI-RS resource.
  • the mapping relationship between CSI reporting and its corresponding CSI-RS resources is implicitly determined. For example, by the type of CSI feedback (periodic or aperiodic), it reports subframes and/or other parameters. Or use explicit signaling to indicate which CSI-RS resource the UE generates a special CSI report.
  • the periodic CSI feedback is based on the first CSI-RS resource, and the aperiodic CSI feedback is based on the second CSI-RS resource.
  • Reporting mode 2 When both CSI feedbacks are started using dynamic signaling aperiodic, when the eNB uses dynamic signaling to trigger a CSI report, the dynamic signaling indicates which CSI-RS resource is used to measure the CQI.
  • the subframe in which the CSI is reported determines the type of CSI and the index of CSI-RS resources used for CSI measurement.
  • the eNB may independently configure one CSI reporting period and offset for each CSI-RS resource.
  • one CSI period eg, the first CSI-RS resource
  • another CSI period eg, the second CSI-RS resource
  • a CSI reporting period is not excluded.
  • the first CSI-RS resource is an integer multiple of another CSI reporting period (eg, the second CSI-RS resource).
  • the UE reports the CSI of the corresponding CSI-RS resource.
  • the subframe in which the CSI of the first CSI-RS resource is reported by the UE is satisfied.
  • the subframe in which the CSI of the second CSI-RS resource is reported is satisfied.
  • n f and n s are the number of subframes and the number of slots.
  • two CSIs may be transmitted simultaneously or only one is transmitted, and the other is discarded.
  • one CSI has a higher priority than another CSI, for example, when the CSI of the second CSI-RS resource conflicts with the CSI of the first CSI-RS resource.
  • the eNB may trigger the CSI of any one CSI-RS resource or simultaneously trigger the CSI of two CSI-RS resources.
  • Table 1 below gives an example of a trigger table using a 2-bit trigger, including four trigger states.
  • a CSI process is configured to be associated with an N-port CSI-RS resource. Based on the CSI-RS resources, up to two CSIs can be reported, and the two CSIs can be represented as a first CSI feedback (CSI1) and a second CSI feedback (CSI2).
  • CSI1 first CSI feedback
  • CSI2 second CSI feedback
  • the UE uses a subset of antenna ports of the CSI-RS resources for feedback. For example, the UE feeds back CSI1/CSI2 using N1/N2 ports in the N-port CSI-RS.
  • N1 N (the first CSI signal uses N ports)
  • N2 ⁇ N (the second CSI signal uses a subset of N ports).
  • the antenna port number indication (N1 or N2) also needs to be indicated to the UE for correct channel measurement, either in a semi-static or dynamic manner.
  • the configuration and notification of the two ports can be the same or different.
  • N1 can use semi-static signaling (take a fixed value), while N2 uses dynamic signaling and can dynamically change every subframe.
  • the reporting period and offset of the first/second CSI feedback can be configured independently.
  • the reporting period of the first CSI feedback is greater than the reporting period of the second CSI feedback.
  • the reporting period of the first CSI feedback may be an integer multiple of the reporting period of the second CSI feedback.
  • the eNB may trigger a CSI1 or CSI2 report, or trigger CSI1 and CSI2 to report or not report.
  • An example of a trigger table using a 2-bit trigger is given in Table 2 below, including four trigger states.
  • Trigger bit (2-bits) UE behavior 00 Report the first CSI feedback and not report the second CSI feedback. 01 Report the second CSI feedback and not report the first CSI feedback. 10 The first CSI feedback and the second CSI feedback are not reported. 11 The first CSI feedback and the second CSI feedback CSI are reported
  • Each CSI feedback can be independently configured with a measurement limit (MR). Measurement limits can be configured to be ON or OFF. Alternatively, the measurement limit of the first CSI feedback may always be configured to be OFF, while the measurement limit of the second CSI feedback is always configured to be ON. Or vice versa. This method can be used for both channel measurement limits and interference measurement limits.
  • MR measurement limit
  • the PDSCH Physical Downlink Shared Channel
  • the PDSCH can perform rate matching of the N-port CSI-RS unless the PQI state is configured, so that the PDSCH rate matching can be dynamically switched between subframes.
  • the number of antenna ports of the CSI-RS resource is not fixed, and the number of antenna ports may be dynamically or semi-statically changed between subframes.
  • the eNB For each CSI feedback, the eNB indicates the number of antenna ports for the CSI-RS, and may also indicate the CSI-RS configuration used by the UE for CSI measurements.
  • the UE measures the CSI-RS indicated by the signaling and calculates the CSI.
  • the eNB can transparently transmit CSI-RS1 or CSI-RS2 to the UE; however, from the perspective of the UE, It is not necessary to know if this CSI-RS is shaped.
  • the UE only needs to receive information about CSI-RS resources, such as the number of ports N1/N2, and perform channel measurement accordingly. )
  • the eNB also indicates that all or part of the parameters below the UE are used to calculate CSI, and the parameters include one or more of the following: codebook, channel and/or interference measurement configuration (such as ON/OFF state), enable/disable PMI feedback, enable Energy/failure RI feedback and enable/disable CQI feedback.
  • codebook codebook
  • channel and/or interference measurement configuration such as ON/OFF state
  • enable/disable PMI feedback enable Energy/failure RI feedback
  • enable/disable CQI feedback enable/disable CQI feedback.
  • each DL grant (downlink scheduling signaling) that triggers CSI feedback it includes codebook information, the measurement limits the ON/OFF state, and the PMI/RI/CQI enables or disables the state.
  • the eNB when the eNB needs beamforming virtualization information, the eNB transmits CSI-RS1 with N1 ports on the downlink, and triggers the UE to feed back PMI1 on the uplink without any measurement restriction.
  • the dynamic signaling that triggers the CSI reporting indicates that the UE uses the N1 port codebooks to disable the measurement limit and only feeds back PMI1.
  • the eNB may trigger the CQI of the CSI-RS after the beamforming is performed by the UE.
  • the dynamic signaling that triggers the CSI reporting indicates that the UE uses the N2 port codebooks to enable the measurement limit and feed back PMI2/CQI2/RI2.
  • an access device in another embodiment, referring to FIG. 7, an access device is shown, where the access device includes: a first sending module 701, configured to send a first pilot signal; and a first receiving module 702, For receiving the first feedback information, the first feedback information reflects a channel state measured on the first pilot signal; the second sending module 703 is configured to send a second pilot signal; and the second receiving module 704 is configured to: Receiving second feedback information, the second feedback information reflects a channel state of the second pilot signal.
  • the first feedback information is used to acquire a beamforming or a virtualization weight of the second pilot signal;
  • the access device further includes: a shaping module, configured to: The second pilot signal is beamformed or virtualized according to the first feedback information.
  • the access device further includes: a determining module, configured to determine, according to the second feedback information, or according to the first feedback information and the second feedback information, a transmission format of the data transmission, And shaping the downlink data according to the transmission format.
  • a determining module configured to determine, according to the second feedback information, or according to the first feedback information and the second feedback information, a transmission format of the data transmission, And shaping the downlink data according to the transmission format.
  • the transmission format includes one or more of a precoding matrix, a time frequency resource allocation, and a modulation and coding mode.
  • the access device further includes: a first configuration module, configured to configure the first pilot signal and the second pilot signal, where the first pilot signal has N1 ports, the second pilot signal has N2 ports, N1, N2 are positive integers greater than or equal to 1, and the values of N1 and N2 are the same or different.
  • a first configuration module configured to configure the first pilot signal and the second pilot signal, where the first pilot signal has N1 ports, the second pilot signal has N2 ports, N1, N2 are positive integers greater than or equal to 1, and the values of N1 and N2 are the same or different.
  • the first feedback information includes one or more of the following: a first precoding matrix indication PMI1, a first channel quality information symbol CQI1, and a first ⁇ indication RI1, a second guide
  • the indication information of the frequency signal wherein the first precoding matrix indicates that PMI1 points to one N1 port precoding matrix in the N1 port codebook, the first channel quality information symbol CQI1 and the first precoding matrix Instructing PMI1 to correspond, the first indication RI1 reflects that the first precoding matrix indicates the ⁇ of PMI1.
  • the second feedback information includes one or more of the following: a second precoding matrix indication PMI2, a second channel quality information symbol CQI2, and a second UI indication RI2, wherein the second precoding matrix indicates that PMI2 points to N2 An N2 port precoding matrix in the port codebook, the second channel quality information symbol CQI2 corresponding to the second precoding matrix indication PMI2, the second UI indication RI2 reflecting the second precoding matrix indication The flaw of PMI2.
  • the access device further includes: a second configuration module, configured to configure a first pilot resource and a second pilot resource, where the first pilot signal uses the a first pilot resource, where the second pilot signal uses the second pilot resource, or a third pilot resource is configured, where the first pilot signal and the second pilot signal correspond to a third pilot N1 ports and N2 ports in the frequency resource; or, configuring a fourth pilot resource, wherein the first pilot signal and the second pilot signal can use the fourth pilot resource, the fourth guide
  • the number of antenna ports of the frequency resource varies dynamically or semi-statically between subframes.
  • the access device further includes: a third configuration module, configured to configure a feedback manner of the first feedback information and the second feedback information, where the first feedback information and the second The feedback information is periodic feedback, and the reporting period and the reporting offset of the first feedback information and the second feedback information are jointly or independently configured; or the first feedback information and the second feedback information are aperiodic feedback, and the access is The device triggers the first feedback information and/or the second feedback information to report; or the first feedback information is periodic feedback, the second feedback information is aperiodic feedback, and the aperiodic feedback is triggered by the access device; or The first feedback information is aperiodic feedback, the second feedback information is periodic feedback, and the aperiodic feedback is triggered by the access device.
  • a third configuration module configured to configure a feedback manner of the first feedback information and the second feedback information, where the first feedback information and the second The feedback information is periodic feedback, and the reporting period and the reporting offset of the first feedback information and the second feedback information are jointly or independently configured; or the first feedback information and the
  • the access device further includes: a fourth configuration module, configured to configure feedback parameters of the first feedback information and the second feedback information, including codebook parameters, channels, and/or All or part of the interference measurement configuration parameter, the enable/fail PMI feedback parameter, the enable/fail RI feedback parameter, and the enable/fail CQI feedback parameter; and the feedback parameter of the first feedback information and the second feedback information.
  • a fourth configuration module configured to configure feedback parameters of the first feedback information and the second feedback information, including codebook parameters, channels, and/or All or part of the interference measurement configuration parameter, the enable/fail PMI feedback parameter, the enable/fail RI feedback parameter, and the enable/fail CQI feedback parameter; and the feedback parameter of the first feedback information and the second feedback information.
  • the foregoing access device may be the access device in the embodiment shown in FIG. 4, and any implementation manner of the access device in the embodiment shown in FIG. 4 may be accessed in this embodiment.
  • the device is implemented and will not be described here.
  • an access device including: a first processor 800, configured to read a program in the first memory 820, and perform the following process: through the first transceiver
  • the machine 810 sends a first pilot signal, receives first feedback information, the first feedback information reflects a channel state measured on the first pilot signal, transmits a second pilot signal, and receives second feedback information,
  • the second feedback information reflects a channel state of the second pilot signal.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by the first processor 800 and various circuits of the memory represented by the first memory 820. .
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • the first transceiver 810 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the first processor 800 is responsible for managing the bus architecture and normal processing for different user devices, and the first memory 820 can store data used by the first processor 800 when performing operations.
  • a terminal device in another embodiment, referring to FIG. 9, a terminal device is shown, where the terminal device includes: a third receiving module 901, configured to receive a first pilot signal; and a third sending module 902, configured to Sending a first feedback information, the first feedback information reflects a channel state measured on the first pilot signal; a fourth receiving module 903, configured to receive a second pilot signal; and a fourth sending module 904, configured to send The second feedback information reflects the channel state of the second pilot signal.
  • the first feedback information is used to obtain a beamforming or virtualization weight of the second pilot signal.
  • the terminal device further includes: a fifth receiving module, configured to receive a transmission format determined according to the second feedback information or according to the first feedback information and the second feedback information Downward data after shape.
  • the transmission format includes one or more of a precoding matrix, a time frequency resource allocation, and a modulation and coding mode.
  • the first pilot signal has N1 ports
  • the second pilot signal has N2 ports
  • N1, N2 are positive integers greater than or equal to 1
  • values of N1 and N2 are Same or different.
  • the first feedback information includes one or more of the following: a first precoding matrix indication PMI1, a first channel quality information symbol CQI1, and a first ⁇ indication RI1, a second guide
  • the indication information of the frequency signal wherein the first precoding matrix indicates that PMI1 points to one N1 port precoding matrix in the N1 port codebook, the first channel quality information symbol CQI1 and the first precoding matrix Instructing PMI1 to correspond, the first indication RI1 reflects that the first precoding matrix indicates the ⁇ of PMI1.
  • the second feedback information includes one or more of the following: a second precoding matrix indication PMI2, a second channel quality information symbol CQI2, and a second UI indication RI2, wherein the second precoding matrix indicates that PMI2 points to N2 An N2 port precoding matrix in the port codebook, the second channel quality information symbol CQI2 corresponding to the second precoding matrix indication PMI2, the second UI indication RI2 reflecting the second precoding matrix indication The flaw of PMI2.
  • the first pilot signal uses a first pilot resource
  • the second pilot signal uses a second pilot resource
  • the first pilot signal and the second pilot signal corresponds to N1 ports and N2 ports in the third pilot resource, where N1, N2 are positive integers greater than or equal to 1, and the values of N1 and N2 are the same or different; or the first pilot signal
  • the fourth pilot resource can be used for both the second pilot signal and the number of antenna ports of the fourth pilot resource is dynamically or semi-statically changed between subframes.
  • the terminal device further includes: a sixth receiving module, configured to receive a feedback manner of the first feedback information and the second feedback information, where the first feedback information and the first The feedback information is periodic feedback, and the reporting period of the first feedback information and the second feedback information
  • the first feedback information and the second feedback information are triggered by the access device, and the first feedback information and/or the second feedback information are reported by the access device; or
  • the first feedback information is periodic feedback
  • the second feedback information is aperiodic feedback
  • the aperiodic feedback is triggered by the access device
  • the first feedback information is aperiodic feedback
  • the second feedback information is a period. Feedback, aperiodic feedback is triggered by the access device.
  • the terminal device further includes: a seventh receiving module, configured to receive feedback parameters of the first feedback information and the second feedback information, including codebook parameters, channels, and/or interference All or part of the parameters of the configuration parameters, enable/fail PMI feedback parameters, enable/fail RI feedback parameters, and enable/disable CQI feedback parameters.
  • a seventh receiving module configured to receive feedback parameters of the first feedback information and the second feedback information, including codebook parameters, channels, and/or interference All or part of the parameters of the configuration parameters, enable/fail PMI feedback parameters, enable/fail RI feedback parameters, and enable/disable CQI feedback parameters.
  • the foregoing terminal device may be the terminal device in the embodiment shown in FIG. 5, and any implementation manner of the terminal device in the embodiment shown in FIG. 5 may be implemented by the terminal device in this embodiment. I won't go into details here.
  • a terminal device including: a second processor 1000, configured to read a program in the second memory 1020, and perform the following process: through the second transceiver 1010: Receive a first pilot signal; send first feedback information, where the first feedback information reflects a channel state measured on the first pilot signal; receive a second pilot signal; and send second feedback information, where The two feedback information reflects the channel state of the second pilot signal.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by the second processor 1000 and various circuits of the memory represented by the second memory 1020. .
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • the second transceiver 1010 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface 1030 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the second processor 1000 is responsible for managing the bus architecture and normal processing, and the second memory 1020 can store data used by the second processor 1000 when performing operations.
  • the foregoing terminal device may be the terminal device in the embodiment shown in FIG. 5, and any implementation manner of the terminal device in the embodiment shown in FIG. 5 may be implemented by the terminal device in this embodiment. I won't go into details here.
  • an acquisition system for channel state information feedback including: an access device 1101, configured to send a first pilot signal; and the access device 1101, further For receiving the first feedback information, the first feedback information reflects a channel state measured on the first pilot signal; the access device 1101 is further configured to send a second pilot signal; the access device 1101. The method is further configured to receive a second feedback information, where the second feedback information reflects a channel state of the second pilot signal, and the terminal device 1102 is configured to receive a first pilot signal, where the terminal device 1102 is further used.
  • the first feedback information reflects a channel state measured on the first pilot signal; the terminal device 1102 is further configured to receive a second pilot signal; the terminal device 1102, further And configured to send second feedback information, where the second feedback information reflects a channel state of the second pilot signal.
  • system and “network” are used interchangeably herein.
  • B corresponding to A means that B is associated with A, and B can be determined from A.
  • determining B from A does not mean that B is only determined based on A, and that B can also be determined based on A and/or other information.
  • the disclosed method and apparatus may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • each functional unit in various embodiments of the present disclosure may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
  • the above software functional unit is stored in a storage medium and includes a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform part of the steps of the transceiving method of the various embodiments of the present disclosure.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, and the program code can be stored. Medium.

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Abstract

L'invention concerne un procédé et un système d'acquisition d'une rétroaction d'informations d'état de canal, et un dispositif associé, le procédé comportant les étapes consistant à: émettre un premier signal pilote; recevoir des premières informations de rétroaction, les premières informations de rétroaction reflétant l'état de canal mesuré sur le premier signal pilote; émettre un deuxième signal pilote; recevoir des deuxièmes informations de rétroaction, les deuxièmes informations de rétroaction reflétant l'état de canal du deuxième signal pilote.
PCT/CN2017/075761 2016-03-31 2017-03-06 Procédé et système d'acquisition d'une rétroaction d'informations d'état de canal, et dispositif associé Ceased WO2017166977A1 (fr)

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