WO2024082315A1 - 一种信道状态信息反馈方法、装置、设备及存储介质 - Google Patents

一种信道状态信息反馈方法、装置、设备及存储介质 Download PDF

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Publication number
WO2024082315A1
WO2024082315A1 PCT/CN2022/126846 CN2022126846W WO2024082315A1 WO 2024082315 A1 WO2024082315 A1 WO 2024082315A1 CN 2022126846 W CN2022126846 W CN 2022126846W WO 2024082315 A1 WO2024082315 A1 WO 2024082315A1
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Prior art keywords
information
nzp csi
target
csi
cmr
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PCT/CN2022/126846
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English (en)
French (fr)
Inventor
李明菊
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北京小米移动软件有限公司
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Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to PCT/CN2022/126846 priority Critical patent/WO2024082315A1/zh
Priority to CN202280004319.4A priority patent/CN115997353A/zh
Publication of WO2024082315A1 publication Critical patent/WO2024082315A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B17/00Monitoring; Testing
    • H04B17/30Monitoring; Testing of propagation channels
    • H04B17/309Measuring or estimating channel quality parameters
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems

Definitions

  • the present disclosure relates to the field of communication technology, and in particular to a channel state information feedback method, device, equipment and storage medium.
  • TRPs transmission and receiving points
  • CSI-RS channel state information reference signal
  • the terminal does not select a certain NZP CSI-RS, that is, the terminal does not select the TRP corresponding to the NZP CSI-RS, then how the terminal should provide feedback to the network device and how to report the corresponding NZP CSI-RS channel state information (CSI) to the network device are problems that need to be solved.
  • CSI channel state information
  • the present disclosure provides a channel state information feedback method, device, equipment and storage medium.
  • a channel state information feedback method which is applied to a terminal, comprising: receiving configuration information sent by a network device, determining at least one channel measurement resource CMR based on the configuration information, wherein a target CMR in at least one CMR includes multiple non-zero power channel state information reference signals NZP CSI-RS; sending channel state information CSI to the network device, wherein the CSI is obtained by the terminal through channel measurement based on the target CMR.
  • a channel state information feedback method is provided, which is applied to a network device, comprising: sending configuration information to a terminal, the configuration information is used by the terminal to determine at least one channel measurement resource CMR, wherein a target CMR in at least one CMR includes multiple non-zero power channel state information reference signals NZP CSI-RS; receiving channel state information CSI sent by the terminal, the CSI being obtained by the terminal through channel measurement based on the target CMR.
  • a channel state information feedback device configured in a terminal and includes: a receiving module for receiving configuration information sent by a network device; a determining module for determining at least one channel measurement resource CMR based on the configuration information, wherein a target CMR in at least one CMR includes multiple non-zero power channel state information reference signals NZP CSI-RS; and a sending module for sending channel state information CSI to the network device, wherein the CSI is obtained by the terminal through channel measurement based on the target CMR.
  • a channel state information feedback device configured in a network device and includes: a sending module, used to send configuration information to a terminal, the configuration information is used by the terminal to determine at least one channel measurement resource CMR, wherein a target CMR in at least one CMR includes multiple non-zero power channel state information reference signals NZP CSI-RS; a receiving module, used to receive channel state information CSI sent by the terminal, the CSI is obtained by the terminal through channel measurement based on the target CMR.
  • a channel state information feedback device comprising: a processor; a memory for storing processor executable instructions; wherein the processor is configured to: execute any one of the methods in the first aspect.
  • a channel state information feedback device comprising: a processor; a memory for storing processor executable instructions; wherein the processor is configured to: execute any one of the methods in the second aspect.
  • a storage medium in which instructions are stored.
  • the instructions in the storage medium are executed by a processor of a terminal, the terminal is enabled to execute any one of the methods in the first aspect.
  • a storage medium in which instructions are stored.
  • the instructions in the storage medium are executed by a processor of a network device, the network device is enabled to execute any one of the methods in the second aspect.
  • a communication system including a terminal and a network device, wherein the terminal is used to execute any one of the methods in the first aspect; and the network device is used to execute any one of the methods in the second aspect.
  • the technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources is fed back in the channel state information sent to the network device, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • Fig. 1 is a schematic diagram of a wireless communication system according to an exemplary embodiment.
  • Fig. 2 is a flow chart of a channel state information feedback method according to an exemplary embodiment.
  • Fig. 3 is a flow chart of another channel state information feedback method according to an exemplary embodiment.
  • Fig. 4 is a schematic diagram of a channel state information feedback device according to an exemplary embodiment.
  • Fig. 5 is a schematic diagram of another channel state information feedback device according to an exemplary embodiment.
  • Fig. 6 is a schematic diagram of a channel state information feedback device according to an exemplary embodiment.
  • Fig. 7 is a schematic diagram of another channel state information feedback device according to an exemplary embodiment.
  • the communication method involved in the present disclosure can be applied to the wireless communication system 100 shown in Figure 1.
  • the network system may include a network device 110 and a terminal 120.
  • the wireless communication system shown in Figure 1 is only for schematic illustration, and the wireless communication system may also include other network devices, for example, core network devices, wireless relay devices, and wireless backhaul devices, which are not shown in Figure 1.
  • the embodiment of the present disclosure does not limit the number of network devices and the number of terminals included in the wireless communication system.
  • the wireless communication system of the embodiment of the present disclosure is a network that provides wireless communication functions.
  • the wireless communication system can adopt different communication technologies, such as Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency-Division Multiple Access (OFDMA), Single Carrier FDMA (SC-FDMA), and Carrier Sense Multiple Access with Collision Avoidance.
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency-Division Multiple Access
  • SC-FDMA Single Carrier FDMA
  • Carrier Sense Multiple Access with Collision Avoidance According to the capacity, rate, delay and other factors of different networks, networks can be divided into 2G (English: Generation) networks, 3G networks, 4G networks or future evolution networks, such as the 5th Generation Wireless Communication System (5G) network. 5G
  • the network device 110 involved in the present disclosure may also be referred to as a wireless access network device.
  • the wireless access network device may be: a base station, an evolved Node B (eNB), a home base station, an access point (AP) in a wireless fidelity (WIFI) system, a wireless relay node, a wireless backhaul node, a transmission point (TP) or a TRP, etc. It may also be a gNB in an NR system, or it may also be a component or a part of a device constituting a base station, etc.
  • V2X vehicle-to-everything
  • the network device may also be a vehicle-mounted device. It should be understood that in the embodiments of the present disclosure, the specific technology and specific device form adopted by the network device are not limited.
  • the terminal 120 involved in the present disclosure may also be referred to as a terminal device, a user equipment (UE), a mobile station (MS), a mobile terminal (MT), etc., which is a device that provides voice and/or data connectivity to users.
  • the terminal may be a handheld device with a wireless connection function, a vehicle-mounted device, etc.
  • some examples of terminals are: a smart phone (Mobile Phone), a pocket computer (Pocket Personal Computer, PPC), a handheld computer, a personal digital assistant (Personal Digital Assistant, PDA), a laptop computer, a tablet computer, a wearable device, or a vehicle-mounted device, etc.
  • V2X vehicle-to-everything
  • the terminal device may also be a vehicle-mounted device. It should be understood that the embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the terminal.
  • the network device 110 and the terminal 120 may use any feasible wireless communication technology to achieve mutual data transmission.
  • the transmission channel corresponding to the data sent by the network device 110 to the terminal 120 is called a downlink channel (DL)
  • the transmission channel corresponding to the data sent by the terminal 120 to the network device 110 is called an uplink channel (UL).
  • DL downlink channel
  • UL uplink channel
  • the network device involved in the embodiments of the present disclosure may be a base station.
  • the network device may also be any other possible network device
  • the terminal may be any possible terminal, which is not limited by the present disclosure.
  • a network device uses multiple TRPs to provide services to a terminal.
  • a network device uses four TRPs to provide services to a terminal.
  • whether the TRP used for coherent joint transmission (CJT) is configured by the network device or selected by the terminal is an issue currently under discussion.
  • the multiple TRPs mentioned above can belong to the service cell and/or neighboring cell of the terminal.
  • Each TRP can correspond to one NZP CSI-RS.
  • the issue currently under discussion can be considered as which NZP CSI-RS are used for CSI feedback, whether it is configured by the network equipment or selected by the terminal.
  • the terminal selection method such as the network device configuration, for example, 4 NZP CSI-RS
  • the terminal does not select a certain NZP CSI-RS
  • how the terminal should inform the network device which NZP CSI-RS it has selected, and how the CSI corresponding to the NZP CSI-RS should be indicated, is a problem that needs to be solved at present.
  • the present disclosure provides a channel state information feedback method, apparatus, device and storage medium.
  • Parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources is fed back in the channel state information sent to the network device, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • FIG. 2 is a flow chart of a channel state information feedback method according to an exemplary embodiment. As shown in FIG. 2 , the method is applied to a terminal and may include the following steps:
  • step S11 configuration information sent by a network device is received, and at least one channel measurement resource CMR is determined based on the configuration information.
  • a terminal receives configuration information sent by a network device.
  • the terminal may determine at least one channel measurement resource (CMR) based on the received configuration information.
  • CMR channel measurement resource
  • a target CMR in at least one CMR includes a plurality of NZP CSI-RSs.
  • the target CMR can be considered as the CMR for the terminal to perform channel measurement.
  • one CMR corresponds to one CSI.
  • different TRPs can correspond to different NZP CSI-RSs.
  • the configuration information received by the terminal can be carried in radio resource control (RRC) signaling and/or medium access control element (MAC CE).
  • RRC radio resource control
  • MAC CE medium access control element
  • step S12 channel state information CSI is sent to the network device.
  • the terminal may send CSI to the network device, wherein the CSI is obtained by the terminal through channel measurement based on the target CMR.
  • the terminal can measure at least one NZP CSI-RS among the multiple NZP CSI-RS included in the target CMR to obtain CSI.
  • CSI may also be referred to as a CSI report.
  • the present invention feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources in the channel state information sent to the network device, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • CSI includes: first information and second information.
  • the first information and the second information are different indication information corresponding to the NZP CSI-RS in the target CMR.
  • the first information includes the target NZP CSI-RS indication information.
  • the target NZP CSI-RS indication information is used to indicate that the NZP CSI-RS is a target NZP CSI-RS or a non-target NZP CSI-RS, and the target NZP CSI-RS is part or all of the NZP CSI-RS in multiple NZP CSI-RS.
  • the CSI sent by the terminal to the network device may include first information and second information.
  • the CSI report may include two parts, namely part 1 and part 2. Part 1 may correspond to the first information, and part 2 may correspond to the second information.
  • the first information and the second information are different indication information corresponding to the NZP CSI-RS in the target CMR. It can be understood that the first information and the second information are both indication information for describing the NZP CSI-RS in the target CMR, but the first information and the second information are different indication information.
  • the first information may include target NZP CSI-RS indication information.
  • the target NZP CSI-RS indication information may be used to indicate that the NZP CSI-RS is a target NZP CSI-RS or a non-target NZP CSI-RS.
  • the target NZP CSI-RS is part or all of the multiple NZP CSI-RSs.
  • the target NZP CSI-RS is the NZP CSI-RS whose channel quality meets the conditions after the terminal performs channel measurement. That is, the terminal believes that the channel quality of such NZP CSI-RS is good and can communicate with the TRP corresponding to such NZP CSI-RS.
  • the non-target NZP CSI-RS refers to the NZP CSI-RS whose channel quality does not meet the conditions. It can be considered that the channel quality of such NZP CSI-RS is poor and is not conducive to terminal communication.
  • the present invention discloses that, through CSI feedback, parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources is provided, so that when a terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the size of the indication field corresponding to the second information is determined based on the first information.
  • the size of the indication field corresponding to the second information may be determined based on the first information.
  • the size of part 2 of CSI is determined based on the information in part 1.
  • the size of part 2 indicates the number of bits occupied by part 2 of CSI, such as 8 bits or 16 bits.
  • the size of the indication field corresponding to the first information may be a fixed value, such as a pre-set value or a default size specified by a protocol.
  • the present disclosure dynamically adjusts the size of different parts of the CSI, which is beneficial to feedback parameter information corresponding to at least one NZP CSI-RS, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the first information also includes at least one of the following: channel state information reference signal resource indication CRI information; broadband channel quality information CQI; the number of non-zero broadband amplitude coefficients; non-zero coefficient number indication information; non-zero coefficient position indication information; mode indication; rank indication information.
  • the first information may include channel state information reference signal resource indicator (CRI) information.
  • CRI channel state information reference signal resource indicator
  • the first information may include broadband channel quality information (channel quality indicator, CQI).
  • broadband channel quality information channel quality indicator, CQI
  • the first information may include the number of non-zero wideband amplitude coefficients.
  • the number of non-zero broadband amplitude coefficients means the number of broadband amplitude coefficient values that are non-zero.
  • the first information may include non-zero coefficient number indication information.
  • non-zero coefficient number indication information can indicate the number of coefficients whose coherent coefficients are non-zero.
  • the first information may include non-zero coefficient position indication information.
  • non-zero coefficient position indication information can indicate the position of the coefficient whose coherent coefficient is non-zero.
  • the first information may include a mode indication.
  • the mode indication can be used to indicate the CSI feedback mode, codebook mode, etc.
  • the CSI feedback mode may include mode 1 and mode 2, where mode 1 is feedback based on a single TRP and mode 2 is feedback based on multiple TRPs.
  • the CSI feedback mode may also include other modes, which are not limited by the present disclosure.
  • the codebook mode may include codebook structure 1 and codebook structure 2, where codebook structure 1 is to feedback a frequency domain basis vector (FD basis) information for all NZP CSI-RS; codebook structure 2 is to feedback a frequency domain basis vector information for each NZP CSI-RS.
  • the codebook mode may also include other modes, which are not limited by the present disclosure.
  • the first information may include rank indication information.
  • the present disclosure provides a variety of different first information included in the CSI, and feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources through CSI, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the target NZP CSI-RS indication information includes N bits, where N is the number of NZP CSI-RS contained in the target CMR, and the N bits correspond one-to-one to the N NZP CSI-RS; in response to the value of the bit being a specified value, it indicates that the NZP CSI-RS corresponding to the bit is the target NZP CSI-RS.
  • the target NZP CSI-RS indication information in the first information may include N bits. Wherein N is a positive integer. N represents the number of NZP CSI-RS contained in the target CMR.
  • the N bits in the target NZP CSI-RS indication information correspond one-to-one to the N NZP CSI-RS contained in the target CMR. That is, each bit can be used to describe whether the corresponding NZP CSI-RS is the target NZP CSI-RS.
  • the NZP CSI-RS corresponding to the bit can be considered to be the target NZP CSI-RS.
  • the designated value of a bit may be “0” or “1.”
  • the designated value may also be any other numerical value or symbol, which is not limited in the present disclosure.
  • the TRP corresponding to the determined target NZP CSI-RS is the TRP selected by the terminal for subsequent communications.
  • the present invention indicates a target NZP CSI-RS among multiple NZP CSI-RSs through bits in target NZP CSI-RS indication information, and feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources through CSI, so that when a terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the target NZP CSI-RS indication information is indicated by N non-zero coefficient number indication information, where N is the number of NZP CSI-RS included in the target CMR, and the N non-zero coefficient number indication information corresponds to the N NZP CSI-RS one by one.
  • the non-zero coefficient number indication information being a specified value, it indicates that the NZP CSI-RS corresponding to the non-zero coefficient number indication information is the target NZP CSI-RS.
  • the target NZP CSI-RS indication information in the first information can be implicitly indicated by N non-zero coefficient number indication information.
  • N is a positive integer.
  • N represents the number of NZP CSI-RS contained in the target CMR.
  • the N non-zero coefficient number indication information in the target NZP CSI-RS indication information corresponds one-to-one to the N NZP CSI-RS contained in the target CMR. That is, each non-zero coefficient number indication information can be used to describe whether the corresponding NZP CSI-RS is the target NZP CSI-RS.
  • the non-zero coefficient number indication information is a specified value
  • the NZP CSI-RS corresponding to the non-zero coefficient number indication information can be considered to be the target NZP CSI-RS.
  • the non-zero coefficient number indication information may be a specified value, and the number indicated by the non-zero coefficient number indication information may be a number greater than 0. That is, it means that the NZP CSI-RS corresponding to the non-zero coefficient number indication information is the target NZP CSI-RS.
  • any equivalent method may be used to determine the specified value of the non-zero coefficient number indication information, which is not limited in the present disclosure.
  • the present disclosure can indicate a target NZP CSI-RS among multiple NZP CSI-RSs through the non-zero coefficient number indication information in the target NZP CSI-RS indication information.
  • the signaling overhead of CSI reporting can be reduced when the terminal communicates with multiple TRPs.
  • the target NZP CSI-RS indication information is indicated by N non-zero coefficient position indication information, where N is the number of NZP CSI-RS included in the target CMR, and the N non-zero coefficient position indication information corresponds to the N NZP CSI-RS one by one.
  • the non-zero coefficient position indication information being a specified value, it indicates that the NZP CSI-RS corresponding to the non-zero coefficient position indication information is the target NZP CSI-RS.
  • the target NZP CSI-RS indication information in the first information can be implicitly indicated by N non-zero coefficient position indication information.
  • N is a positive integer.
  • N represents the number of NZP CSI-RS contained in the target CMR.
  • the N non-zero coefficient position indication information in the target NZP CSI-RS indication information corresponds one-to-one to the N NZP CSI-RS contained in the target CMR. That is, each non-zero coefficient position indication information can be used to describe whether the corresponding NZP CSI-RS is the target NZP CSI-RS.
  • the non-zero coefficient position indication information is a specified value
  • the NZP CSI-RS corresponding to the non-zero coefficient number indication information can be considered to be the target NZP CSI-RS.
  • the non-zero coefficient position indication information may be a specified value, and the non-zero coefficient position indication information may indicate that there is at least one position where the coherent coefficient is a non-zero coefficient. That is, it means that the NZP CSI-RS corresponding to the non-zero coefficient position indication information is the target NZP CSI-RS.
  • any equivalent method may be used to determine the specified value of the non-zero coefficient position indication information, which is not limited in the present disclosure.
  • the non-zero coefficient position indication information can be implemented through a non-zero coefficient bitmap.
  • the non-zero coefficient bitmap corresponding to the NZP CSI-RS can indicate that the coherence coefficient of the NZP CSI-RS is indicated as a specified value or 0. In response to the coherence coefficient being indicated as a specified value, it means that the coherence coefficient at this position is a non-zero coefficient; in response to the coherence coefficient being indicated as 0, it means that the coherence coefficient at this position is 0. It can be understood that the bitmap of the non-target NZP CSI-RS indicates that the coherence coefficients of the NZP CSI-RS are all 0. Only when the bitmap indicates the presence of a non-zero coefficient, the corresponding NZP CSI-RS is considered to be the target NZP CSI-RS.
  • the target NZP CSI-RS there will be at least one non-zero coefficient in its coherence coefficient, that is, a non-zero coefficient.
  • the coherence coefficients corresponding to the non-target NZP CSI-RS are all 0.
  • the present disclosure can indicate a target NZP CSI-RS among multiple NZP CSI-RSs through non-zero coefficient position indication information in the target NZP CSI-RS indication information.
  • the signaling overhead of CSI reporting can be reduced when the terminal communicates with multiple TRPs.
  • the second information includes precoding matrix indicator (PMI) information
  • PMI information may include at least one of the following: spatial basis vector parameter information; frequency domain basis vector parameter information; non-zero coefficient position indication information; phase coefficient information; amplitude coefficient information.
  • the second information may include PMI information.
  • the PMI information may be used to describe the precoding matrix used by the NZP CSI-RS in the target CMR for downlink multiple in multiple out (MIMO) spatial multiplexing.
  • the PMI information may include spatial domain basis (SD basis) parameter information.
  • SD basis spatial domain basis
  • the PMI information may include FD basis parameter information.
  • the PMI information may include non-zero coefficient position indication information.
  • the PMI information in response to the use of non-zero coefficient position indication information in the first information to implicitly indicate the target NZP CSI-RS indication information, the PMI information does not include the non-zero coefficient position indication information.
  • the PMI information may include the non-zero coefficient position indication information.
  • the PMI information may include phase coefficient information.
  • the PMI information may include amplitude coefficient information.
  • the present disclosure provides a variety of different information included in the second information of CSI, and feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources through CSI, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the second information includes PMI information corresponding to the target NZP CSI-RS.
  • the second information may include PMI information corresponding to the target NZP CSI-RS.
  • the second information may also include or exclude PMI information corresponding to the non-target NZP CSI-RS.
  • the PMI information corresponding to the non-target NZP CSI-RS may be a default value. For example, it may be 0 or any other equivalent value, and the specific default value is not limited in this disclosure.
  • the present invention discloses the PMI information corresponding to the target NZP CSI-RS included in the second information of CSI, and thereby feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources through CSI, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the second information does not include PMI information corresponding to NZP CSI-RS other than the target NZP CSI-RS.
  • the second information only includes PMI information corresponding to the target NZP CSI-RS, but does not include PMI information corresponding to NZP CSI-RS other than the target NZP CSI-RS, that is, it does not include PMI information corresponding to non-target NZP CSI-RS.
  • the second information does not include PMI information corresponding to NZP CSI-RS other than the target NZP CSI-RS, and may not include SD basis parameter information, FD basis parameter information, phase coefficient information and amplitude coefficient information.
  • the present disclosure reduces the size of CSI by including only the PMI information corresponding to the target NZP CSI-RS in the second information of CSI, but not including the PMI information corresponding to the non-target NZP CSI-RS. This reduces the signaling overhead of CSI reporting when the terminal communicates with multiple TRPs.
  • the spatial basis vector parameter information may include at least one of the following: oversampling information; beam selection information.
  • the SD basis parameter information may include oversampling information.
  • the oversampling information may correspond to O1 information and O2 information, wherein the O1 information is an oversampling factor of a first dimension, and the O2 information is an oversampling factor of a second dimension.
  • the SD basis parameter information may include beam selection information.
  • the beam selection information corresponds to L beams selected from N1 and N2, where N1 is the number of antenna ports in the first dimension of the NZP CSI-RS and N2 is the number of antenna ports in the second dimension of the NZP CSI-RS.
  • the present disclosure provides a variety of information including spatial basis vector parameter information, and feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources through CSI, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the frequency domain basis vector includes determining M frequency domain units from multiple frequency domain units for each data layer, where M is a positive integer.
  • FD basis parameter information can be specific to each data layer.
  • the FD basis parameter information may select M frequency domain units from N3 frequency domain units.
  • M is a positive integer.
  • N3 is the number of CQI subbands multiplied by an R value.
  • the R value represents the number of PMI subbands corresponding to a CQI subband.
  • the present disclosure provides a variety of information including frequency domain basis vector parameter information, and feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources through CSI, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the phase coefficient information may include at least one of the following: broadband phase coefficient information; narrowband phase coefficient information; phase coefficient information corresponding to NZP CSI-RS.
  • the phase coefficient information may include broadband phase coefficient information.
  • the phase coefficient information may include narrowband phase coefficient information.
  • the phase coefficient information may include phase coefficient information corresponding to the NZP CSI-RS.
  • phase coefficient information corresponding to the non-target NZP CSI-RS may not be indicated, or may be a default value.
  • the default value is, for example, 0.
  • the present disclosure provides a variety of information including phase coefficient information, and feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources through CSI, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the amplitude coefficient information may include at least one of the following: broadband amplitude coefficient information; narrowband amplitude coefficient information; amplitude coefficient information corresponding to NZP CSI-RS.
  • the amplitude coefficient information may include broadband amplitude coefficient information.
  • the amplitude coefficient information may include narrowband amplitude coefficient information.
  • the amplitude coefficient information may include amplitude coefficient information corresponding to the NZP CSI-RS.
  • the amplitude coefficient information corresponding to the non-target NZP CSI-RS may not be indicated, or may be a default value.
  • the default value is, for example, 0.
  • the present disclosure provides a variety of information including amplitude coefficient information, and feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources through CSI, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the present disclosure also provides a channel state information feedback method executed by a network device side.
  • FIG3 is a flow chart of another channel state information feedback method according to an exemplary embodiment. As shown in FIG3 , the method is applied to a network device and may include the following steps:
  • step S11 configuration information is sent to the terminal.
  • the network device sends configuration information to the terminal.
  • the configuration information can be used by the terminal to determine at least one CMR.
  • a target CMR in the at least one CMR includes multiple NZP CSI-RSs.
  • the network device may send configuration information using RRC signaling and/or MAC CE.
  • step S12 channel state information CSI sent by the terminal is received.
  • the network device may receive CSI sent by the terminal, wherein the CSI is obtained by the terminal through channel measurement based on the target CMR.
  • the terminal can measure at least one NZP CSI-RS among the multiple NZP CSI-RS included in the target CMR to obtain CSI.
  • CSI may also be referred to as a CSI report.
  • the present invention feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources in the channel state information sent to the network device, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • CSI includes: first information and second information.
  • the first information and the second information are different indication information corresponding to the NZP CSI-RS in the target CMR.
  • the first information includes the target NZP CSI-RS indication information.
  • the target NZP CSI-RS indication information is used to indicate that the NZP CSI-RS is a target NZP CSI-RS or a non-target NZP CSI-RS, and the target NZP CSI-RS is part or all of the NZP CSI-RS in multiple NZP CSI-RS.
  • the CSI received by the network device may include first information and second information.
  • the CSI report may include two parts, namely part 1 and part 2. Part 1 may correspond to the first information, and part 2 may correspond to the second information.
  • the first information and the second information are different indication information corresponding to the NZP CSI-RS in the target CMR. It can be understood that the first information and the second information are both indication information for describing the NZP CSI-RS in the target CMR, but the first information and the second information are different indication information.
  • the first information may include target NZP CSI-RS indication information.
  • the target NZP CSI-RS indication information may be used to indicate that the NZP CSI-RS is a target NZP CSI-RS or a non-target NZP CSI-RS.
  • the target NZP CSI-RS is part or all of the multiple NZP CSI-RSs.
  • the target NZP CSI-RS is the NZP CSI-RS whose channel quality meets the conditions after the terminal performs channel measurement. That is, the terminal believes that the channel quality of such NZP CSI-RS is good and can communicate with the TRP corresponding to such NZP CSI-RS.
  • the non-target NZP CSI-RS refers to the NZP CSI-RS whose channel quality does not meet the conditions. It can be considered that the channel quality of such NZP CSI-RS is poor and is not conducive to terminal communication.
  • the present invention discloses that, through CSI feedback, parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources is provided, so that when a terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the size of the indication field corresponding to the second information is determined based on the first information.
  • the size of the indication field corresponding to the second information may be determined based on the first information.
  • the size of part 2 of CSI is determined based on the information in part 1.
  • the size of part 2 indicates the number of bits occupied by part 2 of CSI, such as 8 bits or 16 bits.
  • the size of the indication field corresponding to the first information may be a fixed value, such as a pre-set value or a default size specified by a protocol.
  • the present disclosure dynamically adjusts the size of different parts of the CSI, which is beneficial to feedback parameter information corresponding to at least one NZP CSI-RS, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the first information also includes at least one of the following: channel state information reference signal resource indication CRI information; broadband channel quality information CQI; the number of non-zero broadband amplitude coefficients; non-zero coefficient number indication information; non-zero coefficient position indication information; mode indication; rank indication information.
  • the first information may include CRI information.
  • the first information may include a wideband CQI.
  • the first information may include the number of non-zero wideband amplitude coefficients.
  • the number of non-zero broadband amplitude coefficients means the number of broadband amplitude coefficient values that are non-zero.
  • the first information may include non-zero coefficient number indication information.
  • non-zero coefficient number indication information can indicate the number of coefficients whose coherent coefficients are non-zero.
  • the first information may include non-zero coefficient position indication information.
  • non-zero coefficient position indication information can indicate the position of the coefficient whose coherent coefficient is non-zero.
  • the first information may include a mode indication.
  • the mode indication can be used to indicate the CSI feedback mode, codebook mode, etc.
  • the CSI feedback mode may include mode 1 and mode 2, where mode 1 is feedback based on a single TRP and mode 2 is feedback based on multiple TRPs.
  • the CSI feedback mode may also include other modes, which are not limited by the present disclosure.
  • the codebook mode may include codebook structure 1 and codebook structure 2, where codebook structure 1 is to feedback a frequency domain basis vector (FD basis) information for all NZP CSI-RS; codebook structure 2 is to feedback a frequency domain basis vector information for each NZP CSI-RS.
  • the codebook mode may also include other modes, which are not limited by the present disclosure.
  • the first information may include rank indication information.
  • the present disclosure provides a variety of different first information included in the CSI, and feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources through CSI, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the target NZP CSI-RS indication information includes N bits, N is the number of NZP CSI-RS contained in the target CMR, wherein the N bits correspond one-to-one to the N NZP CSI-RS; in response to the value of the bit being a specified value, it indicates that the NZP CSI-RS corresponding to the bit is the target NZP CSI-RS.
  • the target NZP CSI-RS indication information in the first information may include N bits. Wherein N is a positive integer. N represents the number of NZP CSI-RS contained in the target CMR. The N bits in the target NZP CSI-RS indication information correspond one-to-one to the N NZP CSI-RS contained in the target CMR. In other words, each bit can be used to describe whether the corresponding NZP CSI-RS is the target NZP CSI-RS. When a bit is a specified value, the NZP CSI-RS corresponding to the bit can be considered to be the target NZP CSI-RS.
  • the designated value of a bit may be “0” or “1.”
  • the designated value may also be any other numerical value or symbol, which is not limited in the present disclosure.
  • the TRP corresponding to the determined target NZP CSI-RS is the TRP selected by the terminal for subsequent communications.
  • the present invention indicates a target NZP CSI-RS among multiple NZP CSI-RSs through bits in target NZP CSI-RS indication information, and feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources through CSI, so that when a terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the target NZP CSI-RS indication information is indicated by N non-zero coefficient number indication information, where N is the number of NZP CSI-RS included in the target CMR, and the N non-zero coefficient number indication information corresponds to the N NZP CSI-RS one by one.
  • the non-zero coefficient number indication information being a specified value, it indicates that the NZP CSI-RS corresponding to the non-zero coefficient number indication information is the target NZP CSI-RS.
  • the target NZP CSI-RS indication information in the first information can be implicitly indicated by N non-zero coefficient number indication information.
  • N is a positive integer.
  • N represents the number of NZP CSI-RS contained in the target CMR.
  • the N non-zero coefficient number indication information in the target NZP CSI-RS indication information corresponds one-to-one to the N NZP CSI-RS contained in the target CMR. That is, each non-zero coefficient number indication information can be used to describe whether the corresponding NZP CSI-RS is the target NZP CSI-RS.
  • the non-zero coefficient number indication information is a specified value
  • the NZP CSI-RS corresponding to the non-zero coefficient number indication information can be considered to be the target NZP CSI-RS.
  • the non-zero coefficient number indication information may be a specified value, and the number indicated by the non-zero coefficient number indication information may be a number greater than 0. That is, it means that the NZP CSI-RS corresponding to the non-zero coefficient number indication information is the target NZP CSI-RS.
  • any equivalent method may be used to determine the specified value of the non-zero coefficient number indication information, which is not limited in the present disclosure.
  • the present disclosure can indicate a target NZP CSI-RS among multiple NZP CSI-RSs through the non-zero coefficient number indication information in the target NZP CSI-RS indication information.
  • the signaling overhead of CSI reporting can be reduced when the terminal communicates with multiple TRPs.
  • the target NZP CSI-RS indication information is indicated by N non-zero coefficient position indication information, where N is the number of NZP CSI-RS included in the target CMR, and the N non-zero coefficient position indication information corresponds to the N NZP CSI-RS one by one.
  • the non-zero coefficient position indication information being a specified value, it indicates that the NZP CSI-RS corresponding to the non-zero coefficient position indication information is the target NZP CSI-RS.
  • the target NZP CSI-RS indication information in the first information can be implicitly indicated by N non-zero coefficient position indication information.
  • N is a positive integer.
  • N represents the number of NZP CSI-RS contained in the target CMR.
  • the N non-zero coefficient position indication information in the target NZP CSI-RS indication information corresponds one-to-one to the N NZP CSI-RS contained in the target CMR. That is, each non-zero coefficient position indication information can be used to describe whether the corresponding NZP CSI-RS is the target NZP CSI-RS.
  • the non-zero coefficient position indication information is a specified value
  • the NZP CSI-RS corresponding to the non-zero coefficient number indication information can be considered to be the target NZP CSI-RS.
  • the non-zero coefficient position indication information may be a specified value, and the non-zero coefficient position indication information may indicate that there is at least one position where the coherent coefficient is a non-zero coefficient. That is, it means that the NZP CSI-RS corresponding to the non-zero coefficient position indication information is the target NZP CSI-RS.
  • any equivalent method may be used to determine the specified value of the non-zero coefficient position indication information, which is not limited in the present disclosure.
  • the non-zero coefficient position indication information can be implemented through a non-zero coefficient bitmap.
  • the non-zero coefficient bitmap corresponding to the NZP CSI-RS can indicate that the coherence coefficient of the NZP CSI-RS is indicated as a specified value or 0. In response to the coherence coefficient being indicated as a specified value, it means that the coherence coefficient at this position is a non-zero coefficient; in response to the coherence coefficient being indicated as 0, it means that the coherence coefficient at this position is 0. It can be understood that the bitmap of the non-target NZP CSI-RS indicates that the coherence coefficients of the NZP CSI-RS are all 0. Only when the bitmap indicates the presence of a non-zero coefficient, the corresponding NZP CSI-RS is considered to be the target NZP CSI-RS.
  • the target NZP CSI-RS there will be at least one non-zero coefficient in its coherence coefficient, that is, a non-zero coefficient.
  • the coherence coefficients corresponding to the non-target NZP CSI-RS are all 0.
  • the present disclosure can indicate a target NZP CSI-RS among multiple NZP CSI-RSs through non-zero coefficient position indication information in the target NZP CSI-RS indication information.
  • the signaling overhead of CSI reporting can be reduced when the terminal communicates with multiple TRPs.
  • the second information includes PMI information
  • the PMI information may include at least one of the following: spatial domain basis vector parameter information; frequency domain basis vector parameter information; non-zero coefficient position indication information; phase coefficient information; amplitude coefficient information.
  • the second information may include PMI information.
  • the PMI information may be used to describe the precoding matrix used by the NZP CSI-RS in the target CMR for downlink MIMO spatial multiplexing.
  • the PMI information may include SD basis parameter information.
  • the PMI information may include FD basis parameter information.
  • the PMI information may include non-zero coefficient position indication information.
  • the PMI information in response to the use of non-zero coefficient position indication information in the first information to implicitly indicate the target NZP CSI-RS indication information, the PMI information does not include the non-zero coefficient position indication information.
  • the PMI information may include the non-zero coefficient position indication information.
  • the PMI information may include phase coefficient information.
  • the PMI information may include amplitude coefficient information.
  • the present disclosure provides a variety of different information included in the second information of CSI, and feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources through CSI, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the second information includes PMI information corresponding to the target NZP CSI-RS.
  • the second information may include PMI information corresponding to the target NZP CSI-RS.
  • the second information may also include or exclude PMI information corresponding to the non-target NZP CSI-RS.
  • the PMI information corresponding to the non-target NZP CSI-RS may be a default value. For example, it may be 0 or any other equivalent value, and the specific default value is not limited in this disclosure.
  • the present invention discloses that the PMI information corresponding to the target NZP CSI-RS is included in the second information of the CSI, and thus the parameter information corresponding to at least one NZP CSI-RS measured based on the channel measurement resource is fed back through the CSI, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the second information does not include PMI information corresponding to NZP CSI-RS other than the target NZP CSI-RS.
  • the second information only includes PMI information corresponding to the target NZP CSI-RS, but does not include PMI information corresponding to NZP CSI-RS other than the target NZP CSI-RS, that is, it does not include PMI information corresponding to non-target NZP CSI-RS.
  • the second information does not include PMI information corresponding to NZP CSI-RS other than the target NZP CSI-RS, and may not include SD basis parameter information, FD basis parameter information, phase coefficient information and amplitude coefficient information.
  • the present disclosure reduces the size of CSI by including only the PMI information corresponding to the target NZP CSI-RS in the second information of CSI, but not including the PMI information corresponding to the non-target NZP CSI-RS.
  • the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the spatial basis vector parameter information may include at least one of the following: oversampling information; beam selection information.
  • the SD basis parameter information may include oversampling information.
  • the oversampling information may correspond to O1 information and O2 information, wherein the O1 information is an oversampling factor of a first dimension, and the O2 information is an oversampling factor of a second dimension.
  • the SD basis parameter information may include beam selection information.
  • the beam selection information corresponds to L beams selected from N1 and N2, where N1 is the number of antenna ports in the first dimension of the NZP CSI-RS and N2 is the number of antenna ports in the second dimension of the NZP CSI-RS.
  • the present disclosure provides a variety of information including spatial basis vector parameter information, and feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources through CSI, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the frequency domain basis vector includes determining M frequency domain units from multiple frequency domain units for each data layer, where M is a positive integer.
  • FD basis parameter information can be specific to each layer.
  • the FD basis parameter information can select M frequency domain units from N3 frequency domain units.
  • M is a positive integer.
  • N3 is the number of CQI subbands multiplied by an R value.
  • the R value represents the number of PMI subbands corresponding to a CQI subband.
  • the present disclosure provides a variety of information including frequency domain basis vector parameter information, and feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources through CSI, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the phase coefficient information may include at least one of the following: broadband phase coefficient information; narrowband phase coefficient information; phase coefficient information corresponding to NZP CSI-RS.
  • the phase coefficient information may include broadband phase coefficient information.
  • the phase coefficient information may include narrowband phase coefficient information.
  • the phase coefficient information may include phase coefficient information corresponding to the NZP CSI-RS.
  • phase coefficient information corresponding to the non-target NZP CSI-RS may not be indicated, or may be a default value.
  • the default value is, for example, 0.
  • the present disclosure provides a variety of information including phase coefficient information, and feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources through CSI, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the amplitude coefficient information may include at least one of the following: broadband amplitude coefficient information; narrowband amplitude coefficient information; amplitude coefficient information corresponding to NZP CSI-RS.
  • the amplitude coefficient information may include broadband amplitude coefficient information.
  • the amplitude coefficient information may include narrowband amplitude coefficient information.
  • the amplitude coefficient information may include amplitude coefficient information corresponding to the NZP CSI-RS.
  • the amplitude coefficient information corresponding to the non-target NZP CSI-RS may not be indicated, or may be a default value.
  • the default value is, for example, 0.
  • the present disclosure provides a variety of information including amplitude coefficient information, and feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources through CSI, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the embodiments of the present disclosure also provide a channel state information feedback device and apparatus.
  • the channel state information feedback device and equipment provided by the embodiments of the present disclosure include hardware structures and/or software modules corresponding to the execution of each function in order to realize the above functions.
  • the embodiments of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the technical solution of the embodiments of the present disclosure.
  • Fig. 4 is a schematic diagram of a channel state information feedback device according to an exemplary embodiment.
  • the device 200 is configured in a terminal, and includes: a receiving module 201, used to receive configuration information sent by a network device; a determining module 202, used to determine at least one channel measurement resource CMR based on the configuration information, wherein the target CMR in at least one CMR includes multiple non-zero power channel state information reference signals NZP CSI-RS; a sending module 203, used to send channel state information CSI to the network device, and the CSI is obtained by the terminal through channel measurement based on the target CMR.
  • a receiving module 201 used to receive configuration information sent by a network device
  • a determining module 202 used to determine at least one channel measurement resource CMR based on the configuration information, wherein the target CMR in at least one CMR includes multiple non-zero power channel state information reference signals NZP CSI-RS
  • a sending module 203 used to send channel state information CSI to the network device,
  • the present invention feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources in the channel state information sent to the network device, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the CSI includes: first information and second information, wherein the first information and the second information are different indication information corresponding to the NZP CSI-RS in the target CMR; the first information includes target NZP CSI-RS indication information, and the target NZP CSI-RS indication information is used to indicate that the NZP CSI-RS is a target NZP CSI-RS or a non-target NZP CSI-RS, and the target NZP CSI-RS is part or all of the NZP CSI-RS among multiple NZP CSI-RS.
  • the present invention discloses that, through CSI feedback, parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources is provided, so that when a terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the size of the second information corresponding indication field is determined based on the first information.
  • the present disclosure dynamically adjusts the size of different parts of the CSI, which is beneficial to feedback parameter information corresponding to at least one NZP CSI-RS, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the first information also includes at least one of the following: channel state information reference signal resource indication CRI information; broadband channel quality information CQI; number of non-zero broadband amplitude coefficients; non-zero coefficient number indication information; non-zero coefficient position indication information; mode indication; rank indication information.
  • the present disclosure provides a variety of different first information included in the CSI, and feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources through CSI, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the target NZP CSI-RS indication information includes N bits, where N is the number of NZP CSI-RS included in the target CMR, and the N bits correspond one-to-one to the N NZP CSI-RS; in response to the value of the bit being a specified value, it indicates that the NZP CSI-RS corresponding to the bit is the target NZP CSI-RS.
  • the present invention indicates a target NZP CSI-RS among multiple NZP CSI-RSs through bits in target NZP CSI-RS indication information, and feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources through CSI, so that when a terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the target NZP CSI-RS indication information is indicated by N non-zero coefficient number indication information, where N is the number of NZP CSI-RS included in the target CMR, wherein the N non-zero coefficient number indication information corresponds one-to-one to the N NZP CSI-RS; in response to the non-zero coefficient number indication information being a specified value, it indicates that the NZP CSI-RS corresponding to the non-zero coefficient number indication information is the target NZP CSI-RS.
  • the present disclosure can indicate a target NZP CSI-RS among multiple NZP CSI-RSs through the non-zero coefficient number indication information in the target NZP CSI-RS indication information.
  • the signaling overhead of CSI reporting can be reduced when the terminal communicates with multiple TRPs.
  • the target NZP CSI-RS indication information is indicated by N non-zero coefficient position indication information, where N is the number of NZP CSI-RS included in the target CMR, wherein the N non-zero coefficient position indication information corresponds one-to-one to the N NZP CSI-RS; in response to the non-zero coefficient position indication information being a specified value, it indicates that the NZP CSI-RS corresponding to the non-zero coefficient position indication information is the target NZP CSI-RS.
  • the present disclosure can indicate a target NZP CSI-RS among multiple NZP CSI-RSs through non-zero coefficient position indication information in the target NZP CSI-RS indication information.
  • the signaling overhead of CSI reporting can be reduced when the terminal communicates with multiple TRPs.
  • the second information includes precoding matrix indication PMI information
  • the PMI information includes at least one of the following: spatial domain basis vector parameter information; frequency domain basis vector parameter information; non-zero coefficient position indication information; phase coefficient information; amplitude coefficient information.
  • the present disclosure provides a variety of different information included in the second information of CSI, and feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources through CSI, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the second information includes PMI information corresponding to the target NZP CSI-RS.
  • the present invention discloses the PMI information corresponding to the target NZP CSI-RS included in the second information of CSI, and thereby feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources through CSI, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the second information does not include PMI information corresponding to NZP CSI-RS other than the target NZP CSI-RS.
  • the present disclosure reduces the size of CSI by including only the PMI information corresponding to the target NZP CSI-RS in the second information of CSI, but not including the PMI information corresponding to the non-target NZP CSI-RS. This reduces the signaling overhead of CSI reporting when the terminal communicates with multiple TRPs.
  • the spatial basis vector parameter information includes at least one of the following: oversampling information; beam selection information.
  • the present disclosure provides a variety of information including spatial basis vector parameter information, and feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources through CSI, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the frequency domain basis vectors include determining, for each data layer, M frequency domain units from a plurality of frequency domain units, where M is a positive integer.
  • the present disclosure provides a variety of information including frequency domain basis vector parameter information, and feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources through CSI, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the phase coefficient information includes at least one of the following: wideband phase coefficient information; narrowband phase coefficient information; phase coefficient information corresponding to NZP CSI-RS.
  • the present disclosure provides a variety of information including phase coefficient information, and feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources through CSI, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the amplitude coefficient information includes at least one of the following: wideband amplitude coefficient information; narrowband amplitude coefficient information; amplitude coefficient information corresponding to NZP CSI-RS.
  • the present disclosure provides a variety of information including amplitude coefficient information, and feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources through CSI, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • Fig. 5 is a schematic diagram of another channel state information feedback device according to an exemplary embodiment.
  • the device 300 is configured in a network device, and includes: a sending module 301, used to send configuration information to a terminal, the configuration information is used by the terminal to determine at least one channel measurement resource CMR, wherein the target CMR in at least one CMR includes multiple non-zero power channel state information reference signals NZP CSI-RS; a receiving module 302, used to receive the channel state information CSI sent by the terminal, the CSI is obtained by the terminal through channel measurement based on the target CMR.
  • a sending module 301 used to send configuration information to a terminal, the configuration information is used by the terminal to determine at least one channel measurement resource CMR, wherein the target CMR in at least one CMR includes multiple non-zero power channel state information reference signals NZP CSI-RS
  • a receiving module 302 used to receive the channel state information CSI sent by the terminal, the CSI is obtained by the terminal through channel measurement based on the target CMR
  • the present invention feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources in the channel state information sent to the network device, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the CSI includes: first information and second information, wherein the first information and the second information are different indication information corresponding to the NZP CSI-RS in the target CMR; the first information includes target NZP CSI-RS indication information, and the target NZP CSI-RS indication information is used to indicate that the NZP CSI-RS is a target NZP CSI-RS or a non-target NZP CSI-RS, and the target NZP CSI-RS is part or all of the NZP CSI-RS among multiple NZP CSI-RS.
  • the present invention discloses that, through CSI feedback, parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources is provided, so that when a terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the size of the second information corresponding indication field is determined based on the first information.
  • the present disclosure dynamically adjusts the size of different parts of the CSI, which is beneficial to feedback parameter information corresponding to at least one NZP CSI-RS, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the first information also includes at least one of the following: channel state information reference signal resource indication CRI information; broadband channel quality information CQI; number of non-zero broadband amplitude coefficients; non-zero coefficient number indication information; non-zero coefficient position indication information; mode indication; rank indication information.
  • the present disclosure provides a variety of different first information included in the CSI, and feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources through CSI, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the target NZP CSI-RS indication information includes N bits, where N is the number of NZP CSI-RS included in the target CMR, and the N bits correspond one-to-one to the N NZP CSI-RS; in response to the value of the bit being a specified value, it indicates that the NZP CSI-RS corresponding to the bit is the target NZP CSI-RS.
  • the present invention indicates a target NZP CSI-RS among multiple NZP CSI-RSs through bits in target NZP CSI-RS indication information, and feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources through CSI, so that when a terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the target NZP CSI-RS indication information is indicated by N non-zero coefficient number indication information, where N is the number of NZP CSI-RS included in the target CMR, wherein the N non-zero coefficient number indication information corresponds one-to-one to the N NZP CSI-RS; in response to the non-zero coefficient number indication information being a specified value, it indicates that the NZP CSI-RS corresponding to the non-zero coefficient number indication information is the target NZP CSI-RS.
  • the present disclosure can indicate a target NZP CSI-RS among multiple NZP CSI-RSs through the non-zero coefficient number indication information in the target NZP CSI-RS indication information.
  • the signaling overhead of CSI reporting can be reduced when the terminal communicates with multiple TRPs.
  • the target NZP CSI-RS indication information is indicated by N non-zero coefficient position indication information, where N is the number of NZP CSI-RS included in the target CMR, wherein the N non-zero coefficient position indication information corresponds one-to-one to the N NZP CSI-RS; in response to the non-zero coefficient position indication information being a specified value, it indicates that the NZP CSI-RS corresponding to the non-zero coefficient position indication information is the target NZP CSI-RS.
  • the present disclosure can indicate a target NZP CSI-RS among multiple NZP CSI-RSs through non-zero coefficient position indication information in the target NZP CSI-RS indication information.
  • the signaling overhead of CSI reporting can be reduced when the terminal communicates with multiple TRPs.
  • the second information includes precoding matrix indication PMI information
  • the PMI information includes at least one of the following: spatial domain basis vector parameter information; frequency domain basis vector parameter information; non-zero coefficient position indication information; phase coefficient information; amplitude coefficient information.
  • the present disclosure provides a variety of different information included in the second information of CSI, and feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources through CSI, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the second information includes PMI information corresponding to the target NZP CSI-RS.
  • the present invention discloses the PMI information corresponding to the target NZP CSI-RS included in the second information of CSI, and thereby feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources through CSI, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the second information does not include PMI information corresponding to NZP CSI-RS other than the target NZP CSI-RS.
  • the present disclosure reduces the size of CSI by including only the PMI information corresponding to the target NZP CSI-RS in the second information of CSI, but not including the PMI information corresponding to the non-target NZP CSI-RS. This reduces the signaling overhead of CSI reporting when the terminal communicates with multiple TRPs.
  • the spatial basis vector parameter information includes at least one of the following: oversampling information; beam selection information.
  • the present disclosure provides a variety of information including spatial basis vector parameter information, and feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources through CSI, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the frequency domain basis vector parameter information includes, for each data layer, determining M frequency domain units from a plurality of frequency domain units, where M is a positive integer.
  • the present disclosure provides a variety of information including frequency domain basis vector parameter information, and feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources through CSI, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the phase coefficient information includes at least one of the following: wideband phase coefficient information; narrowband phase coefficient information; phase coefficient information corresponding to NZP CSI-RS.
  • the present disclosure provides a variety of information including phase coefficient information, and feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources through CSI, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • the amplitude coefficient information includes at least one of the following: wideband amplitude coefficient information; narrowband amplitude coefficient information; amplitude coefficient information corresponding to NZP CSI-RS.
  • the present disclosure provides a variety of information including amplitude coefficient information, and feeds back parameter information corresponding to at least one NZP CSI-RS measured based on channel measurement resources through CSI, so that when the terminal communicates with multiple TRPs, the signaling overhead of CSI reporting can be reduced.
  • Fig. 6 is a schematic diagram of a channel state information feedback device according to an exemplary embodiment.
  • the device 400 may be any terminal such as a mobile phone, a computer, a digital broadcast terminal, a message transceiver device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.
  • device 400 may include one or more of the following components: a processing component 402 , a memory 404 , a power component 406 , a multimedia component 408 , an audio component 410 , an input/output (I/O) interface 412 , a sensor component 414 , and a communication component 416 .
  • a processing component 402 may include one or more of the following components: a processing component 402 , a memory 404 , a power component 406 , a multimedia component 408 , an audio component 410 , an input/output (I/O) interface 412 , a sensor component 414 , and a communication component 416 .
  • a processing component 402 may include one or more of the following components: a processing component 402 , a memory 404 , a power component 406 , a multimedia component 408 , an audio component 410 , an input/output (I/O) interface 412 , a sensor component 414 , and a communication component
  • the processing component 402 generally controls the overall operation of the device 400, such as operations associated with display, phone calls, data communications, camera operations, and recording operations.
  • the processing component 402 may include one or more processors 420 to execute instructions to complete all or part of the steps of the above-mentioned method.
  • the processing component 402 may include one or more modules to facilitate the interaction between the processing component 402 and other components.
  • the processing component 402 may include a multimedia module to facilitate the interaction between the multimedia component 408 and the processing component 402.
  • the memory 404 is configured to store various types of data to support operations on the device 400. Examples of such data include instructions for any application or method operating on the device 400, contact data, phone book data, messages, pictures, videos, etc.
  • the memory 404 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read-only memory
  • EPROM erasable programmable read-only memory
  • PROM programmable read-only memory
  • ROM read-only memory
  • magnetic memory flash memory
  • flash memory magnetic disk or optical disk.
  • the power component 406 provides power to the various components of the device 400.
  • the power component 406 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device 400.
  • the multimedia component 408 includes a screen that provides an output interface between the device 400 and the user.
  • the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user.
  • the touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation.
  • the multimedia component 408 includes a front camera and/or a rear camera. When the device 400 is in an operating mode, such as a shooting mode or a video mode, the front camera and/or the rear camera may receive external multimedia data. Each front camera and the rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
  • the audio component 410 is configured to output and/or input audio signals.
  • the audio component 410 includes a microphone (MIC), and when the device 400 is in an operating mode, such as a call mode, a recording mode, and a speech recognition mode, the microphone is configured to receive an external audio signal.
  • the received audio signal can be further stored in the memory 404 or sent via the communication component 416.
  • the audio component 410 also includes a speaker for outputting audio signals.
  • I/O interface 412 provides an interface between processing component 402 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, a home button, a volume button, a start button, and a lock button.
  • the sensor assembly 414 includes one or more sensors for providing various aspects of status assessment for the device 400.
  • the sensor assembly 414 can detect the open/closed state of the device 400, the relative positioning of components, such as the display and keypad of the device 400, and the sensor assembly 414 can also detect the position change of the device 400 or a component of the device 400, the presence or absence of user contact with the device 400, the orientation or acceleration/deceleration of the device 400, and the temperature change of the device 400.
  • the sensor assembly 414 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact.
  • the sensor assembly 414 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications.
  • the sensor assembly 414 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
  • the communication component 416 is configured to facilitate wired or wireless communication between the device 400 and other devices.
  • the device 400 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof.
  • the communication component 416 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel.
  • the communication component 416 also includes a near field communication (NFC) module to facilitate short-range communication.
  • the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.
  • RFID radio frequency identification
  • IrDA infrared data association
  • UWB ultra-wideband
  • Bluetooth Bluetooth
  • the device 400 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above methods.
  • ASICs application-specific integrated circuits
  • DSPs digital signal processors
  • DSPDs digital signal processing devices
  • PLDs programmable logic devices
  • FPGAs field programmable gate arrays
  • controllers microcontrollers, microprocessors, or other electronic components to perform the above methods.
  • a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 404 including instructions, which can be executed by a processor 420 of the device 400 to perform the above method.
  • the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.
  • FIG7 is a schematic diagram of another channel state information feedback device according to an exemplary embodiment.
  • device 500 may be provided as a base station, or a server.
  • device 500 includes a processing component 522, which further includes one or more processors, and a memory resource represented by a memory 532 for storing instructions executable by the processing component 522, such as an application.
  • the application stored in the memory 532 may include one or more modules, each corresponding to a set of instructions.
  • the processing component 522 is configured to execute instructions to perform the above method.
  • the device 500 may also include a power supply component 526 configured to perform power management of the device 500, a wired or wireless network interface 550 configured to connect the device 500 to a network, and an input/output (I/O) interface 558.
  • the device 500 may operate based on an operating system stored in the memory 532, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, or the like.
  • the present disclosure further provides a communication system, which includes a terminal and a network device.
  • the terminal is used to execute any one of the channel state information feedback methods described in FIG2 ; and the network device is used to execute any one of the channel state information feedback methods described in FIG3 .
  • the above-mentioned CSI reporting method is used to improve the transmission performance based on multiple TRPs while reducing the signaling overhead of CSI reporting.
  • plural refers to two or more than two, and other quantifiers are similar thereto.
  • “And/or” describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and/or B may represent: A exists alone, A and B exist at the same time, and B exists alone.
  • the character “/” generally indicates that the associated objects before and after are in an “or” relationship.
  • the singular forms “a”, “the” and “the” are also intended to include plural forms, unless the context clearly indicates other meanings.
  • first, second, etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a specific order or degree of importance. In fact, the expressions “first”, “second”, etc. can be used interchangeably.
  • the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

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Abstract

本公开是关于一种信道状态信息反馈方法、装置、设备及存储介质,包括:接收网络设备发送的配置信息,基于配置信息确定至少一个信道测量资源CMR,其中,至少一个CMR中的目标CMR包括多个非零功率信道状态信息参考信号NZP CSI-RS;向网络设备发送信道状态信息CSI,CSI为终端基于目标CMR进行信道测量得到的。在发送至网络设备的信道状态信息中反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。

Description

一种信道状态信息反馈方法、装置、设备及存储介质 技术领域
本公开涉及通信技术领域,尤其涉及一种信道状态信息反馈方法、装置、设备及存储介质。
背景技术
目前网络设备可以采用多发送接收点(transmission and receiving point,TRP)为终端提供服务。每个TRP可以对应一个非零功率(non-zero-power,NZP)信道状态信息参考信号(channel state information reference signal,CSI-RS)。
然而,当终端没有选择某个NZP CSI-RS时,即终端未选择该NZP CSI-RS对应的TRP,那么终端该如何向网络设备进行反馈,以及相应的NZP CSI-RS信道状态信息(channel state information,CSI)如何报告至网络设备,是需要解决的问题。
发明内容
为克服相关技术中存在的问题,本公开提供一种信道状态信息反馈方法、装置、设备及存储介质。
根据本公开实施例的第一方面,提供一种信道状态信息反馈方法,方法应用于终端,包括:接收网络设备发送的配置信息,基于配置信息确定至少一个信道测量资源CMR,其中,至少一个CMR中的目标CMR包括多个非零功率信道状态信息参考信号NZP CSI-RS;向网络设备发送信道状态信息CSI,CSI为终端基于目标CMR进行信道测量得到的。
根据本公开实施例的第二方面,提供一种信道状态信息反馈方法,方法应用于网络设备,包括:向终端发送配置信息,配置信息用于终端确定至少一个信道测量资源CMR,其中,至少一个CMR中的目标CMR包括多个非零功率信道状态信息参考信号NZP CSI-RS;接收终端发送的信道状态信息CSI,CSI为终端基于目标CMR进行信道测量得到的。
根据本公开实施例的第三方面,提供一种信道状态信息反馈装置,装置配置于终端包括:接收模块,用于接收网络设备发送的配置信息;确定模块,用于基于配置信息确定至少一个信道测量资源CMR,其中,至少一个CMR中的目标CMR包括多个非零功率信道状态信息参考信号NZP CSI-RS;发送模块,用于向网络设备发送信道状态信息CSI, CSI为终端基于目标CMR进行信道测量得到的。
根据本公开实施例的第四方面,提供一种信道状态信息反馈装置,装置配置于网络设备,包括:发送模块,用于向终端发送配置信息,配置信息用于终端确定至少一个信道测量资源CMR,其中,至少一个CMR中的目标CMR包括多个非零功率信道状态信息参考信号NZP CSI-RS;接收模块,用于接收终端发送的信道状态信息CSI,CSI为终端基于目标CMR进行信道测量得到的。
根据本公开实施例的第五方面,提供一种信道状态信息反馈设备,包括:处理器;用于存储处理器可执行指令的存储器;其中,处理器被配置为:执行第一方面中的任意一项方法。
根据本公开实施例的第六方面,提供一种信道状态信息反馈设备,包括:处理器;用于存储处理器可执行指令的存储器;其中,处理器被配置为:执行第二方面中的任意一项方法。
根据本公开实施例的第七方面,提供一种存储介质,存储介质中存储有指令,当存储介质中的指令由终端的处理器执行时,使得终端能够执行第一方面中的任意一项方法。
根据本公开实施例的第八方面,提供一种存储介质,存储介质中存储有指令,当存储介质中的指令由网络设备的处理器执行时,使得网络设备能够执行第二方面中的任意一项方法。
根据本公开实施例的第九方面,提供一种通信系统,包括终端和网络设备,其中,终端用于执行第一方面中的任意一项方法;网络设备用于执行第二方面中的任意一项方法。
本公开的实施例提供的技术方案可以包括以下有益效果:在发送至网络设备的信道状态信息中反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
应当理解的是,以上的一般描述和后文的细节描述仅是示例性和解释性的,并不能限制本公开。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分,示出了符合本公开的实施例,并与说明书一起用于解释本公开的原理。
图1是根据一示例性实施例示出的一种无线通信系统示意图。
图2是根据一示例性实施例示出的一种信道状态信息反馈方法流程图。
图3是根据一示例性实施例示出的另一种信道状态信息反馈方法流程图。
图4是根据一示例性实施例示出的一种信道状态信息反馈装置示意图。
图5是根据一示例性实施例示出的另一种信道状态信息反馈装置示意图。
图6是根据一示例性实施例示出的一种信道状态信息反馈设备示意图。
图7是根据一示例性实施例示出的另一种信道状态信息反馈设备示意图。
具体实施方式
这里将详细地对示例性实施例进行说明,其示例表示在附图中。下面的描述涉及附图时,除非另有表示,不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开相一致的所有实施方式。
本公开所涉及的通信方法可以应用于图1所示的无线通信系统100中。该网络系统可以包括网络设备110和终端120。可以理解的是,图1所示的无线通信系统仅是进行示意性说明,无线通信系统中还可包括其它网络设备,例如还可以包括核心网络设备、无线中继设备和无线回传设备等,在图1中未画出。本公开实施例对该无线通信系统中包括的网络设备数量和终端数量不做限定。
进一步可以理解的是,本公开实施例的无线通信系统,是一种提供无线通信功能的网络。无线通信系统可以采用不同的通信技术,例如码分多址(Code Division Multiple Access,CDMA)、宽带码分多址(Wideband Code Division Multiple Access,WCDMA)、时分多址(Time Division Multiple Access,TDMA)、频分多址(Frequency Division Multiple Access,FDMA)、正交频分多址(Orthogonal Frequency-Division Multiple Access,OFDMA)、单载波频分多址(Single Carrier FDMA,SC-FDMA)、载波侦听多路访问/冲突避免(Carrier Sense Multiple Access with Collision Avoidance)。根据不同网络的容量、速率、时延等因素可以将网络分为2G(英文:Generation)网络、3G网络、4G网络或者未来演进网络,如第五代无线通信系统(The 5th Generation Wireless Communication System,5G)网络,5G网络也可称为是新无线网络(New Radio,NR)。为了方便描述,本公开有时会将无线通信网络简称为网络。
进一步的,本公开中涉及的网络设备110也可以称为无线接入网络设备。该无线接入网络设备可以是:基站、演进型基站(evolved Node B,eNB)、家庭基站、无线保真(Wireless Fidelity,WIFI)系统中的接入点(Access Point,AP)、无线中继节点、无线回传节点、传输点(Transmission Point,TP)或者TRP等,还可以为NR系统中的gNB,或 者,还可以是构成基站的组件或一部分设备等。当为车联网(V2X)通信系统时,网络设备还可以是车载设备。应理解,本公开的实施例中,对网络设备所采用的具体技术和具体设备形态不做限定。
进一步的,本公开中涉及的终端120,也可以称为终端设备、用户设备(User Equipment,UE)、移动台(Mobile Station,MS)、移动终端(Mobile Terminal,MT)等,是一种向用户提供语音和/或数据连通性的设备,例如,终端可以是具有无线连接功能的手持式设备、车载设备等。目前,一些终端的举例为:智能手机(Mobile Phone)、口袋计算机(Pocket Personal Computer,PPC)、掌上电脑、个人数字助理(Personal Digital Assistant,PDA)、笔记本电脑、平板电脑、可穿戴设备、或者车载设备等。此外,当为车联网(V2X)通信系统时,终端设备还可以是车载设备。应理解,本公开实施例对终端所采用的具体技术和具体设备形态不做限定。
本公开实施例中,网络设备110与终端120可以采用任意可行的无线通信技术以实现相互传输数据。其中,网络设备110向终端120发送数据所对应的传输通道称为下行信道(downlink,DL),终端120向网络设备110发送数据所对应的传输通道称为上行信道(uplink,UL)。可以理解的是,本公开实施例中所涉及的网络设备可以是基站。当然网络设备还可以是其它任意可能的网络设备,终端可以是任意可能的终端,本公开不作限定。
目前,相关技术中,讨论了网络设备采用多TRP为终端提供服务。例如,网络设备使用4个TRP为终端提供服务。在这种情况下,用于做相关联合传输(coherent joint transmission,CJT)的TRP是网络设备进行配置,还是终端进行选择,是目前正在讨论的问题。其中,上述提到的多个TRP可以属于终端的服务小区和/或邻小区。
而每个TRP可以对应一个NZP CSI-RS,也就是说,目前讨论的问题可以认为是基于哪几个NZP CSI-RS进行CSI反馈,是网络设备进行配置,还是终端进行选择。
在一些方案中,对于终端选择的方法,比如网络设备配置例如4个NZP CSI-RS,终端如果没有选择某个NZP CSI-RS,即表示终端没有选择该NZP CSI-RS对应的TRP。那么终端该如何告知网络设备自身设备选择了哪些NZP CSI-RS,以及相应的该NZP CSI-RS对应的CSI应如何进行指示,是目前需要解决的问题。
因此,本公开提供一种信道状态信息反馈方法、装置、设备及存储介质。在发送至网络设备的信道状态信息中反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
图2是根据一示例性实施例示出的一种信道状态信息反馈方法流程图,如图2所示, 方法应用于终端,可以包括以下步骤:
在步骤S11中,接收网络设备发送的配置信息,基于配置信息确定至少一个信道测量资源CMR。
在一些实施例中,终端接收网络设备发送的配置信息。终端可以基于接收到的配置信息确定至少一个信道测量资源(channel measurement resource,CMR)。其中,至少一个CMR中的目标CMR包括多个NZP CSI-RS。
可以理解,目标CMR可以认为是终端进行信道测量的CMR。其中,一个CMR对应一个CSI。在一个CMR中,不同的TRP可以分别对应不同的NZP CSI-RS。
在一些实施例中,终端接收到的配置信息可以承载在无线资源控制(radio resource control,RRC)信令和/或媒体接入控制单元(medium access control control element,MAC CE)。
在步骤S12中,向网络设备发送信道状态信息CSI。
在一些实施例中,终端可以向网络设备发送CSI。其中,CSI为终端基于目标CMR进行信道测量得到的。
可以理解,终端可以基于目标CMR包括的多个NZP CSI-RS中的至少一个NZP CSI-RS进行测量,得到CSI。
在一些实施例中,CSI也可以称为CSI报告。
本公开在发送至网络设备的信道状态信息中反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
本公开实施例提供的信道状态信息反馈方法中,CSI包括:第一信息和第二信息。其中,第一信息和第二信息为目标CMR中NZP CSI-RS对应的不同指示信息。第一信息包括目标NZP CSI-RS指示信息。目标NZP CSI-RS指示信息用于指示NZP CSI-RS为目标NZP CSI-RS或非目标NZP CSI-RS,目标NZP CSI-RS为多个NZP CSI-RS中的部分或全部NZP CSI-RS。
在一些实施例中,终端向网络设备发送的CSI可以包括第一信息和第二信息。例如,CSI报告可以包括两个部分,即部分(part)1和part 2。其中,part 1可以对应第一信息,part 2可以对应第二信息。其中,第一信息和第二信息为目标CMR中NZP CSI-RS对应的不同指示信息。可以理解,第一信息和第二信息都是用于描述目标CMR中NZP CSI-RS的指示信息,但第一信息和第二信息为不同的指示信息。
在一些实施例中,第一信息可以包括目标NZP CSI-RS指示信息。其中,目标NZP  CSI-RS指示信息可以用于指示NZP CSI-RS为目标NZP CSI-RS或非目标NZP CSI-RS。目标NZP CSI-RS为多个NZP CSI-RS中的部分或全部NZP CSI-RS。
可以理解,目标NZP CSI-RS为终端进行信道测量后,确定信道质量满足条件的NZP CSI-RS。即终端认为此类NZP CSI-RS的信道质量较好,可以与此类NZP CSI-RS对应的TRP进行通信。而非目标NZP CSI-RS则表示信道质量不满足条件的NZP CSI-RS,可以认为此类NZP CSI-RS的信道质量较差,不利于终端进行通信。
本公开通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
本公开实施例提供的信道状态信息反馈方法中,第二信息对应指示域的大小基于第一信息确定。
在一些实施例中,第二信息对应的指示域的大小(size)可以基于第一信息确定。
例如,CSI的part 2的size基于part 1中的信息确定。其中,part 2的size表示CSI的part 2所占用的比特(bit)数的大小。如占用8个bit或16个bit等。
在一些实施例中,第一信息对应的指示域的size可以是固定值。例如是预先设定的,或者是协议规定的默认size等。
本公开通过动态调整CSI不同部分的大小,有利于反馈至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
本公开实施例提供的信道状态信息反馈方法中,第一信息还包括以下至少一项:信道状态信息参考信号资源指示CRI信息;宽带信道质量信息CQI;非零宽带幅度系数个数;非零系数个数指示信息;非零系数位置指示信息;模式指示;秩rank指示信息。
其中,在一些实施例中,第一信息可以包括信道状态信息参考信号资源指示(channel state information reference signal resource indicator,CRI)信息。
在一些实施例中,第一信息可以包括宽带信道质量信息(channel quality indicator,CQI)。
在一些实施例中,第一信息可以包括非零宽带幅度系数个数。
可以理解,非零宽带幅度系数个数即表示宽带幅度系数值为非零的数量。
在一些实施例中,第一信息可以包括非零系数个数指示信息。
可以理解,非零系数个数指示信息可以指示相干系数为非零的系数的数量。
在一些实施例中,第一信息可以包括非零系数位置指示信息。
可以理解,非零系数位置指示信息可以指示相干系数为非零的系数的位置。
在一些实施例中,第一信息可以包括模式指示。
例如,模式指示可以用于指示CSI反馈模式、码本模式等。CSI反馈模式可以包括模式1和模式2,模式1为基于单个TRP的反馈,模式2为基于多个TRP的反馈。当然,CSI反馈模式也可以包含其它模式,本公开不作限制。码本模式可以包括码本结构1和码本结构2,码本结构1为针对所有NZP CSI-RS,反馈一份频域基向量(frequency domain basis,FD basis)信息;码本结构2为针对每个NZP CSI-RS,均反馈一份频域基向量信息。码本模式也可以包含其它模式,本公开不作限制。
在一些实施例中,第一信息可以包括秩(rank)指示信息。
本公开提供了CSI中包括的多种不同的第一信息,并通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
本公开实施例提供的信道状态信息反馈方法中,目标NZP CSI-RS指示信息包括N个比特位,N为目标CMR中包含的NZP CSI-RS的数量,其中N个比特位与N个NZP CSI-RS一一对应;响应于比特位的值为指定值,则表示比特位对应的NZP CSI-RS为目标NZP CSI-RS。
在一些实施例中,第一信息中的目标NZP CSI-RS指示信息可以包括N个比特位。其中,N为正整数。N表示为目标CMR中包含的NZP CSI-RS的数量。目标NZP CSI-RS指示信息中的N个比特位与目标CMR中包含的N个NZP CSI-RS一一对应。也就是说,每个比特位可以用于描述对应的NZP CSI-RS是否为目标NZP CSI-RS。当比特位为指定值的时候,可以认为该比特位对应的NZP CSI-RS为目标NZP CSI-RS。
例如,比特位的指定值可以为“0”或“1”。当然,指定值还可以是其它任意数值或符号,本公开不做限定。
可以理解,确定的目标NZP CSI-RS所对应的TRP,即终端选中可以进行后续通信的TRP。
本公开通过目标NZP CSI-RS指示信息中的比特位指示多个NZP CSI-RS中的目标NZP CSI-RS,通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
本公开实施例提供的信道状态信息反馈方法中,目标NZP CSI-RS指示信息通过N个非零系数个数指示信息进行指示,N为目标CMR中包含的NZP CSI-RS的数量,其中N个非零系数个数指示信息与N个NZP CSI-RS一一对应。响应于非零系数个数指示信息为指定值,则表示非零系数个数指示信息对应的NZP CSI-RS为目标NZP CSI-RS。
在一些实施例中,第一信息中的目标NZP CSI-RS指示信息可以通过N个非零系数个 数指示信息隐式的指示。其中,N为正整数。N表示为目标CMR中包含的NZP CSI-RS的数量。目标NZP CSI-RS指示信息中的N个非零系数个数指示信息与目标CMR中包含的N个NZP CSI-RS一一对应。也就是说,每个非零系数个数指示信息可以用于描述对应的NZP CSI-RS是否为目标NZP CSI-RS。当非零系数个数指示信息为指定值的时候,可以认为该非零系数个数指示信息对应的NZP CSI-RS为目标NZP CSI-RS。
例如,非零系数个数指示信息为指定值可以是,非零系数个数指示信息所指示的个数为大于0的数量。即表示该非零系数个数指示信息对应的NZP CSI-RS为目标NZP CSI-RS。当然,还可以采用任意等效的方式确定非零系数个数指示信息的指定值,本公开不做限定。
本公开通过目标NZP CSI-RS指示信息中的非零系数个数指示信息,可以指示多个NZP CSI-RS中的目标NZP CSI-RS。通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
本公开实施例提供的信道状态信息反馈方法中,目标NZP CSI-RS指示信息通过N个非零系数位置指示信息进行指示,N为目标CMR中包含的NZP CSI-RS的数量,其中N个非零系数位置指示信息与N个NZP CSI-RS一一对应。响应于非零系数位置指示信息为指定值,则表示非零系数位置指示信息对应的NZP CSI-RS为目标NZP CSI-RS。
在一些实施例中,第一信息中的目标NZP CSI-RS指示信息可以通过N个非零系数位置指示信息隐式的指示。其中,N为正整数。N表示为目标CMR中包含的NZP CSI-RS的数量。目标NZP CSI-RS指示信息中的N个非零系数位置指示信息与目标CMR中包含的N个NZP CSI-RS一一对应。也就是说,每个非零系数位置指示信息可以用于描述对应的NZP CSI-RS是否为目标NZP CSI-RS。当非零系数位置指示信息为指定值的时候,可以认为该非零系数个数指示信息对应的NZP CSI-RS为目标NZP CSI-RS。
例如,非零系数位置指示信息为指定值可以是,非零系数位置指示信息可以指示存在至少一个位置的相干系数为非零系数。即表示该非零系数位置指示信息对应的NZP CSI-RS为目标NZP CSI-RS。当然,还可以采用任意等效的方式确定非零系数位置指示信息的指定值,本公开不做限定。
在一些实施例中,非零系数位置指示信息可以通过非零系数位图(bitmap)实现。例如,通过NZP CSI-RS对应非零系数bitmap可以指示该NZP CSI-RS的相干系数指示为指定值或0。响应于相干系数指示为指定值,则表示该位置的相干系数为非零系数;响应于相干系数指示为0,则表示该位置的相干系数为0。可以理解,非目标NZP CSI-RS的bitmap指示该NZP CSI-RS的相干系数全都为0。只有bitmap指示存在非零系数时,对应 的NZP CSI-RS才认为是目标NZP CSI-RS。
可以理解,对于目标NZP CSI-RS而言,其相干系数中会存在至少一个非零的系数,即非零系数。而非目标NZP CSI-RS对应的相干系数则均为0。
本公开通过目标NZP CSI-RS指示信息中的非零系数位置指示信息,可以指示多个NZP CSI-RS中的目标NZP CSI-RS。通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
本公开实施例提供的信道状态信息反馈方法中,第二信息包括预编码矩阵指示(precoding matrix indicator,PMI)信息,PMI信息可以包括以下至少一项:空域基向量参数信息;频域基向量参数信息;非零系数位置指示信息;相位系数信息;幅度系数信息。
其中,在一些实施例中,第二信息可以包括PMI信息。PMI信息可以用于描述目标CMR中的NZP CSI-RS所采用的预编码矩阵,以用于下行多进多出(multiple in multiple out,MIMO)空间复用。
在一些实施例中,PMI信息可以包括空域基向量(space domain basis,SD basis)参数信息。
在一些实施例中,PMI信息可以包括FD basis参数信息。
在一些实施例中,PMI信息可以包括非零系数位置指示信息。
可以理解,响应于第一信息中采用非零系数位置指示信息隐式指示目标NZP CSI-RS指示信息,则PMI信息中不包括非零系数位置指示信息。响应于第一信息中未采用非零系数位置指示信息隐式指示目标NZP CSI-RS指示信息,则PMI信息中可以包括非零系数位置指示信息。
在一些实施例中,PMI信息可以包括相位系数信息。
在一些实施例中,PMI信息可以包括幅度系数信息。
本公开提供了CSI的第二信息中包括的多种不同信息,并通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
本公开实施例提供的信道状态信息反馈方法中,第二信息包括目标NZP CSI-RS对应的PMI信息。
在一些实施例中,第二信息中可以包括目标NZP CSI-RS对应的PMI信息。当然,第二信息中也可以包括或不包括非目标NZP CSI-RS对应的PMI信息。
在一些实施例中,响应于第二信息中包括非目标NZP CSI-RS对应的PMI信息,则非 目标NZP CSI-RS对应的PMI信息可以为默认值。例如可以为0或其它任意等效的数值,具体的默认值本公开不做限定。
本公开通过CSI的第二信息中包括的目标NZP CSI-RS对应的PMI信息,从而通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
本公开实施例提供的信道状态信息反馈方法中,第二信息不包括目标NZP CSI-RS以外的NZP CSI-RS对应的PMI信息。
在一些实施例中,第二信息中仅包括目标NZP CSI-RS对应的PMI信息,而不包括目标NZP CSI-RS以外的NZP CSI-RS对应的PMI信息,即不包括非目标NZP CSI-RS对应的PMI信息。
在一些实施例中,第二信息中不包括目标NZP CSI-RS以外的NZP CSI-RS对应的PMI信息,可以是不包括SD basis参数信息、FD basis参数信息、相位系数信息和幅度系数信息。
本公开通过CSI的第二信息中仅包括的目标NZP CSI-RS对应的PMI信息,而不包括非目标NZP CSI-RS对应的PMI信息,进而减小了CSI的大小。使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
本公开实施例提供的信道状态信息反馈方法中,空域基向量参数信息可以包括以下至少一项:过采样信息;波束选择信息。
在一些实施例中,SD basis参数信息可以包括过采样信息。
例如,过采样信息可以对应O 1信息和O 2信息。其中,O 1信息为第一维度过采样因子,O 2信息为第二维度过采样因子。
在一些实施例中,SD basis参数信息可以包括波束选择信息。
例如,波束选择信息对应从N1、N2中选出的L个波束。其中,N1为NZP CSI-RS的第一维度的天线端口数。N2为NZP CSI-RS的第二维度的天线端口数。
本公开提供了空域基向量参数信息包括的多种信息,通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
本公开实施例提供的信道状态信息反馈方法中,频域基向量包括针对各个数据层,从多个频域单元中确定M个频域单元,其中,M为正整数。
在一些实施例中,FD basis参数信息可以针对各个数据层(layer)。
在一些实施例中,FD basis参数信息可以从N3个频域单元中选出M个频域单元。其 中,M为正整数。N3为CQI的子带(subband)数量乘以一个R值。R值表示一个CQI subband对应的PMI子带的数量。
本公开提供了频域基向量参数信息包括的多种信息,通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
本公开实施例提供的信道状态信息反馈方法中,相位系数信息可以包括以下至少一项:宽带相位系数信息;窄带相位系数信息;NZP CSI-RS对应的相位系数信息。
其中,在一些实施例中,相位系数信息可以包括宽带相位系数信息。
在一些实施例中,相位系数信息可以包括窄带相位系数信息。
在一些实施例中,相位系数信息可以包括NZP CSI-RS对应的相位系数信息。
可以理解,对于非目标NZP CSI-RS对应的相位系数信息可以不进行指示,或者为默认值。默认值例如为0。
本公开提供了相位系数信息包括的多种信息,通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
本公开实施例提供的信道状态信息反馈方法中,幅度系数信息可以包括以下至少一项:宽带幅度系数信息;窄带幅度系数信息;NZP CSI-RS对应的幅度系数信息。
其中,在一些实施例中,幅度系数信息可以包括宽带幅度系数信息。
在一些实施例中,幅度系数信息可以包括窄带幅度系数信息。
在一些实施例中,幅度系数信息可以包括NZP CSI-RS对应的幅度系数信息。
可以理解,对于非目标NZP CSI-RS对应的幅度系数信息可以不进行指示,或者为默认值。默认值例如为0。
本公开提供了幅度系数信息包括的多种信息,通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
基于相同构思,本公开还提供了网络设备侧执行的信道状态信息反馈方法。
图3是根据一示例性实施例示出的另一种信道状态信息反馈方法流程图,如图3所示,方法应用于网络设备,可以包括以下步骤:
在步骤S11中,向终端发送配置信息。
在一些实施例中,网络设备向终端发送配置信息。该配置信息可以用于终端确定至少一个CMR。其中,至少一个CMR中的目标CMR包括多个NZP CSI-RS。
在一些实施例中,网络设备可以采用RRC信令和/或MAC CE的方式发送配置信息。
在步骤S12中,接收终端发送的信道状态信息CSI。
在一些实施例中,网络设备可以接收终端发送的CSI。其中,CSI为终端基于目标CMR进行信道测量得到的。
可以理解,终端可以基于目标CMR包括的多个NZP CSI-RS中的至少一个NZP CSI-RS进行测量,得到CSI。
在一些实施例中,CSI也可以称为CSI报告。
本公开在发送至网络设备的信道状态信息中反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
本公开实施例提供的信道状态信息反馈方法中,CSI包括:第一信息和第二信息。其中,第一信息和第二信息为目标CMR中NZP CSI-RS对应的不同指示信息。第一信息包括目标NZP CSI-RS指示信息。目标NZP CSI-RS指示信息用于指示NZP CSI-RS为目标NZP CSI-RS或非目标NZP CSI-RS,目标NZP CSI-RS为多个NZP CSI-RS中的部分或全部NZP CSI-RS。
在一些实施例中,网络设备接收的CSI可以包括第一信息和第二信息。例如,CSI报告可以包括两个部分,即part 1和part 2。其中,part 1可以对应第一信息,part 2可以对应第二信息。其中,第一信息和第二信息为目标CMR中NZP CSI-RS对应的不同指示信息。可以理解,第一信息和第二信息都是用于描述目标CMR中NZP CSI-RS的指示信息,但第一信息和第二信息为不同的指示信息。
在一些实施例中,第一信息可以包括目标NZP CSI-RS指示信息。其中,目标NZP CSI-RS指示信息可以用于指示NZP CSI-RS为目标NZP CSI-RS或非目标NZP CSI-RS。目标NZP CSI-RS为多个NZP CSI-RS中的部分或全部NZP CSI-RS。
可以理解,目标NZP CSI-RS为终端进行信道测量后,确定信道质量满足条件的NZP CSI-RS。即终端认为此类NZP CSI-RS的信道质量较好,可以与此类NZP CSI-RS对应的TRP进行通信。而非目标NZP CSI-RS则表示信道质量不满足条件的NZP CSI-RS,可以认为此类NZP CSI-RS的信道质量较差,不利于终端进行通信。
本公开通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
本公开实施例提供的信道状态信息反馈方法中,第二信息对应指示域的大小基于第一信息确定。
在一些实施例中,第二信息对应的指示域的size可以基于第一信息确定。
例如,CSI的part 2的size基于part 1中的信息确定。其中,part 2的size表示CSI的part 2所占用的比特数的大小。如占用8个bit或16个bit等。
在一些实施例中,第一信息对应的指示域的size可以是固定值。例如是预先设定的,或者是协议规定的默认size等。
本公开通过动态调整CSI不同部分的大小,有利于反馈至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
本公开实施例提供的信道状态信息反馈方法中,第一信息还包括以下至少一项:信道状态信息参考信号资源指示CRI信息;宽带信道质量信息CQI;非零宽带幅度系数个数;非零系数个数指示信息;非零系数位置指示信息;模式指示;秩rank指示信息。
其中,在一些实施例中,第一信息可以包括CRI信息。
在一些实施例中,第一信息可以包括宽带CQI。
在一些实施例中,第一信息可以包括非零宽带幅度系数个数。
可以理解,非零宽带幅度系数个数即表示宽带幅度系数值为非零的数量。
在一些实施例中,第一信息可以包括非零系数个数指示信息。
可以理解,非零系数个数指示信息可以指示相干系数为非零的系数的数量。
在一些实施例中,第一信息可以包括非零系数位置指示信息。
可以理解,非零系数位置指示信息可以指示相干系数为非零的系数的位置。
在一些实施例中,第一信息可以包括模式指示。
例如,模式指示可以用于指示CSI反馈模式、码本模式等。CSI反馈模式可以包括模式1和模式2,模式1为基于单个TRP的反馈,模式2为基于多个TRP的反馈。当然,CSI反馈模式也可以包含其它模式,本公开不作限制。码本模式可以包括码本结构1和码本结构2,码本结构1为针对所有NZP CSI-RS,反馈一份频域基向量(frequency domain basis,FD basis)信息;码本结构2为针对每个NZP CSI-RS,均反馈一份频域基向量信息。码本模式也可以包含其它模式,本公开不作限制。
在一些实施例中,第一信息可以包括rank指示信息。
本公开提供了CSI中包括的多种不同的第一信息,并通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
本公开实施例提供的信道状态信息反馈方法中,目标NZP CSI-RS指示信息包括N个比特位,N为目标CMR中包含的NZP CSI-RS的数量,其中N个比特位与N个NZP CSI- RS一一对应;响应于比特位的值为指定值,则表示比特位对应的NZP CSI-RS为目标NZP CSI-RS。
在一些实施例中,第一信息中的目标NZP CSI-RS指示信息可以包括N个比特位。其中,N为正整数。N表示为目标CMR中包含的NZP CSI-RS的数量。目标NZP CSI-RS指示信息中的N个比特位与目标CMR中包含的N个NZP CSI-RS一一对应。也就是说,每个比特位可以用于描述对应的NZP CSI-RS是否为目标NZP CSI-RS。当比特位为指定值的时候,可以认为该比特位对应的NZP CSI-RS为目标NZP CSI-RS。
例如,比特位的指定值可以为“0”或“1”。当然,指定值还可以是其它任意数值或符号,本公开不做限定。
可以理解,确定的目标NZP CSI-RS所对应的TRP,即终端选中可以进行后续通信的TRP。
本公开通过目标NZP CSI-RS指示信息中的比特位指示多个NZP CSI-RS中的目标NZP CSI-RS,通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
本公开实施例提供的信道状态信息反馈方法中,目标NZP CSI-RS指示信息通过N个非零系数个数指示信息进行指示,N为目标CMR中包含的NZP CSI-RS的数量,其中N个非零系数个数指示信息与N个NZP CSI-RS一一对应。响应于非零系数个数指示信息为指定值,则表示非零系数个数指示信息对应的NZP CSI-RS为目标NZP CSI-RS。
在一些实施例中,第一信息中的目标NZP CSI-RS指示信息可以通过N个非零系数个数指示信息隐式的指示。其中,N为正整数。N表示为目标CMR中包含的NZP CSI-RS的数量。目标NZP CSI-RS指示信息中的N个非零系数个数指示信息与目标CMR中包含的N个NZP CSI-RS一一对应。也就是说,每个非零系数个数指示信息可以用于描述对应的NZP CSI-RS是否为目标NZP CSI-RS。当非零系数个数指示信息为指定值的时候,可以认为该非零系数个数指示信息对应的NZP CSI-RS为目标NZP CSI-RS。
例如,非零系数个数指示信息为指定值可以是,非零系数个数指示信息所指示的个数为大于0的数量。即表示该非零系数个数指示信息对应的NZP CSI-RS为目标NZP CSI-RS。当然,还可以采用任意等效的方式确定非零系数个数指示信息的指定值,本公开不做限定。
本公开通过目标NZP CSI-RS指示信息中的非零系数个数指示信息,可以指示多个NZP CSI-RS中的目标NZP CSI-RS。通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
本公开实施例提供的信道状态信息反馈方法中,目标NZP CSI-RS指示信息通过N个非零系数位置指示信息进行指示,N为目标CMR中包含的NZP CSI-RS的数量,其中N个非零系数位置指示信息与N个NZP CSI-RS一一对应。响应于非零系数位置指示信息为指定值,则表示非零系数位置指示信息对应的NZP CSI-RS为目标NZP CSI-RS。
在一些实施例中,第一信息中的目标NZP CSI-RS指示信息可以通过N个非零系数位置指示信息隐式的指示。其中,N为正整数。N表示为目标CMR中包含的NZP CSI-RS的数量。目标NZP CSI-RS指示信息中的N个非零系数位置指示信息与目标CMR中包含的N个NZP CSI-RS一一对应。也就是说,每个非零系数位置指示信息可以用于描述对应的NZP CSI-RS是否为目标NZP CSI-RS。当非零系数位置指示信息为指定值的时候,可以认为该非零系数个数指示信息对应的NZP CSI-RS为目标NZP CSI-RS。
例如,非零系数位置指示信息为指定值可以是,非零系数位置指示信息可以指示存在至少一个位置的相干系数为非零系数。即表示该非零系数位置指示信息对应的NZP CSI-RS为目标NZP CSI-RS。当然,还可以采用任意等效的方式确定非零系数位置指示信息的指定值,本公开不做限定。
在一些实施例中,非零系数位置指示信息可以通过非零系数bitmap实现。例如,通过NZP CSI-RS对应非零系数bitmap可以指示该NZP CSI-RS的相干系数指示为指定值或0。响应于相干系数指示为指定值,则表示该位置的相干系数为非零系数;响应于相干系数指示为0,则表示该位置的相干系数为0。可以理解,非目标NZP CSI-RS的bitmap指示该NZP CSI-RS的相干系数全都为0。只有bitmap指示存在非零系数时,对应的NZP CSI-RS才认为是目标NZP CSI-RS。
可以理解,对于目标NZP CSI-RS而言,其相干系数中会存在至少一个非零的系数,即非零系数。而非目标NZP CSI-RS对应的相干系数则均为0。
本公开通过目标NZP CSI-RS指示信息中的非零系数位置指示信息,可以指示多个NZP CSI-RS中的目标NZP CSI-RS。通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
本公开实施例提供的信道状态信息反馈方法中,第二信息包括PMI信息,PMI信息可以包括以下至少一项:空域基向量参数信息;频域基向量参数信息;非零系数位置指示信息;相位系数信息;幅度系数信息。
其中,在一些实施例中,第二信息可以包括PMI信息。PMI信息可以用于描述目标CMR中的NZP CSI-RS所采用的预编码矩阵,以用于下行MIMO空间复用。
在一些实施例中,PMI信息可以包括SD basis参数信息。
在一些实施例中,PMI信息可以包括FD basis参数信息。
在一些实施例中,PMI信息可以包括非零系数位置指示信息。
可以理解,响应于第一信息中采用非零系数位置指示信息隐式指示目标NZP CSI-RS指示信息,则PMI信息中不包括非零系数位置指示信息。响应于第一信息中未采用非零系数位置指示信息隐式指示目标NZP CSI-RS指示信息,则PMI信息中可以包括非零系数位置指示信息。
在一些实施例中,PMI信息可以包括相位系数信息。
在一些实施例中,PMI信息可以包括幅度系数信息。
本公开提供了CSI的第二信息中包括的多种不同信息,并通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
本公开实施例提供的信道状态信息反馈方法中,第二信息包括目标NZP CSI-RS对应的PMI信息。
在一些实施例中,第二信息中可以包括目标NZP CSI-RS对应的PMI信息。当然,第二信息中也可以包括或不包括非目标NZP CSI-RS对应的PMI信息。
在一些实施例中,响应于第二信息中包括非目标NZP CSI-RS对应的PMI信息,则非目标NZP CSI-RS对应的PMI信息可以为默认值。例如可以为0或其它任意等效的数值,具体的默认值本公开不做限定。
本公开通过CSI的第二信息中包括的目标NZP CSI-RS对应的PMI信息,从而通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
本公开实施例提供的信道状态信息反馈方法中,第二信息不包括目标NZP CSI-RS以外的NZP CSI-RS对应的PMI信息。
在一些实施例中,第二信息中仅包括目标NZP CSI-RS对应的PMI信息,而不包括目标NZP CSI-RS以外的NZP CSI-RS对应的PMI信息,即不包括非目标NZP CSI-RS对应的PMI信息。
在一些实施例中,第二信息中不包括目标NZP CSI-RS以外的NZP CSI-RS对应的PMI信息,可以是不包括SD basis参数信息、FD basis参数信息、相位系数信息和幅度系数信息。
本公开通过CSI的第二信息中仅包括的目标NZP CSI-RS对应的PMI信息,而不包括非目标NZP CSI-RS对应的PMI信息,进而减小了CSI的大小。使得当终端与多TRP通信 时,可以减少CSI上报的信令开销。
本公开实施例提供的信道状态信息反馈方法中,空域基向量参数信息可以包括以下至少一项:过采样信息;波束选择信息。
在一些实施例中,SD basis参数信息可以包括过采样信息。
例如,过采样信息可以对应O 1信息和O 2信息。其中,O 1信息为第一维度过采样因子,O 2信息为第二维度过采样因子。
在一些实施例中,SD basis参数信息可以包括波束选择信息。
例如,波束选择信息对应从N1、N2中选出的L个波束。其中,N1为NZP CSI-RS的第一维度的天线端口数。N2为NZP CSI-RS的第二维度的天线端口数。
本公开提供了空域基向量参数信息包括的多种信息,通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
本公开实施例提供的信道状态信息反馈方法中,频域基向量包括针对各个数据层,从多个频域单元中确定M个频域单元,其中,M为正整数。
在一些实施例中,FD basis参数信息可以针对各个layer。
在一些实施例中,FD basis参数信息可以从N3个频域单元中选出M个频域单元。其中,M为正整数。N3为CQI的subband数量乘以一个R值。R值表示一个CQI subband对应的PMI子带的数量。
本公开提供了频域基向量参数信息包括的多种信息,通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
本公开实施例提供的信道状态信息反馈方法中,相位系数信息可以包括以下至少一项:宽带相位系数信息;窄带相位系数信息;NZP CSI-RS对应的相位系数信息。
其中,在一些实施例中,相位系数信息可以包括宽带相位系数信息。
在一些实施例中,相位系数信息可以包括窄带相位系数信息。
在一些实施例中,相位系数信息可以包括NZP CSI-RS对应的相位系数信息。
可以理解,对于非目标NZP CSI-RS对应的相位系数信息可以不进行指示,或者为默认值。默认值例如为0。
本公开提供了相位系数信息包括的多种信息,通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
本公开实施例提供的信道状态信息反馈方法中,幅度系数信息可以包括以下至少一项:宽带幅度系数信息;窄带幅度系数信息;NZP CSI-RS对应的幅度系数信息。
其中,在一些实施例中,幅度系数信息可以包括宽带幅度系数信息。
在一些实施例中,幅度系数信息可以包括窄带幅度系数信息。
在一些实施例中,幅度系数信息可以包括NZP CSI-RS对应的幅度系数信息。
可以理解,对于非目标NZP CSI-RS对应的幅度系数信息可以不进行指示,或者为默认值。默认值例如为0。
本公开提供了幅度系数信息包括的多种信息,通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
可以理解,图3所描述的网络侧各实施例,具体实现过程可以参考图2所示终端侧相应实施例的描述,本公开不再赘述。
需要说明的是,本领域内技术人员可以理解,本公开实施例上述涉及的各种实施方式/实施例中可以配合前述的实施例使用,也可以是独立使用。无论是单独使用还是配合前述的实施例一起使用,其实现原理类似。本公开实施中,部分实施例中是以一起使用的实施方式进行说明的。当然,本领域内技术人员可以理解,这样的举例说明并非对本公开实施例的限定。
基于相同的构思,本公开实施例还提供一种信道状态信息反馈装置、设备。
可以理解的是,本公开实施例提供的信道状态信息反馈装置、设备为了实现上述功能,其包含了执行各个功能相应的硬件结构和/或软件模块。结合本公开实施例中所公开的各示例的单元及算法步骤,本公开实施例能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行,取决于技术方案的特定应用和设计约束条件。本领域技术人员可以对每个特定的应用来使用不同的方法来实现所描述的功能,但是这种实现不应认为超出本公开实施例的技术方案的范围。
图4是根据一示例性实施例示出的一种信道状态信息反馈装置示意图。参照图4,该装置200配置于终端,包括:接收模块201,用于接收网络设备发送的配置信息;确定模块202,用于基于配置信息确定至少一个信道测量资源CMR,其中,至少一个CMR中的目标CMR包括多个非零功率信道状态信息参考信号NZP CSI-RS;发送模块203,用于向网络设备发送信道状态信息CSI,CSI为终端基于目标CMR进行信道测量得到的。
本公开在发送至网络设备的信道状态信息中反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开 销。
在一些实施方式中,CSI包括:第一信息和第二信息,其中,第一信息和第二信息为目标CMR中NZP CSI-RS对应的不同指示信息;第一信息包括目标NZP CSI-RS指示信息,目标NZP CSI-RS指示信息用于指示NZP CSI-RS为目标NZP CSI-RS或非目标NZP CSI-RS,目标NZP CSI-RS为多个NZP CSI-RS中的部分或全部NZP CSI-RS。
本公开通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
在一些实施方式中,第二信息对应指示域的大小基于第一信息确定。
本公开通过动态调整CSI不同部分的大小,有利于反馈至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
在一些实施方式中,第一信息还包括以下至少一项:信道状态信息参考信号资源指示CRI信息;宽带信道质量信息CQI;非零宽带幅度系数个数;非零系数个数指示信息;非零系数位置指示信息;模式指示;秩rank指示信息。
本公开提供了CSI中包括的多种不同的第一信息,并通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
在一些实施方式中,目标NZP CSI-RS指示信息包括N个比特位,N为目标CMR中包含的NZP CSI-RS的数量,其中N个比特位与N个NZP CSI-RS一一对应;响应于比特位的值为指定值,则表示比特位对应的NZP CSI-RS为目标NZP CSI-RS。
本公开通过目标NZP CSI-RS指示信息中的比特位指示多个NZP CSI-RS中的目标NZP CSI-RS,通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
在一些实施方式中,目标NZP CSI-RS指示信息通过N个非零系数个数指示信息进行指示,N为目标CMR中包含的NZP CSI-RS的数量,其中N个非零系数个数指示信息与N个NZP CSI-RS一一对应;响应于非零系数个数指示信息为指定值,则表示非零系数个数指示信息对应的NZP CSI-RS为目标NZP CSI-RS。
本公开通过目标NZP CSI-RS指示信息中的非零系数个数指示信息,可以指示多个NZP CSI-RS中的目标NZP CSI-RS。通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
在一些实施方式中,目标NZP CSI-RS指示信息通过N个非零系数位置指示信息进行指示,N为目标CMR中包含的NZP CSI-RS的数量,其中N个非零系数位置指示信息与 N个NZP CSI-RS一一对应;响应于非零系数位置指示信息为指定值,则表示非零系数位置指示信息对应的NZP CSI-RS为目标NZP CSI-RS。
本公开通过目标NZP CSI-RS指示信息中的非零系数位置指示信息,可以指示多个NZP CSI-RS中的目标NZP CSI-RS。通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
在一些实施方式中,第二信息包括预编码矩阵指示PMI信息,PMI信息包括以下至少一项:空域基向量参数信息;频域基向量参数信息;非零系数位置指示信息;相位系数信息;幅度系数信息。
本公开提供了CSI的第二信息中包括的多种不同信息,并通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
在一些实施方式中,第二信息包括目标NZP CSI-RS对应的PMI信息。
本公开通过CSI的第二信息中包括的目标NZP CSI-RS对应的PMI信息,从而通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
在一些实施方式中,第二信息不包括目标NZP CSI-RS以外的NZP CSI-RS对应的PMI信息。
本公开通过CSI的第二信息中仅包括的目标NZP CSI-RS对应的PMI信息,而不包括非目标NZP CSI-RS对应的PMI信息,进而减小了CSI的大小。使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
在一些实施方式中,空域基向量参数信息包括以下至少一项:过采样信息;波束选择信息。
本公开提供了空域基向量参数信息包括的多种信息,通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
在一些实施方式中,频域基向量包括针对各个数据层,从多个频域单元中确定M个频域单元,其中,M为正整数。
本公开提供了频域基向量参数信息包括的多种信息,通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
在一些实施方式中,相位系数信息包括以下至少一项:宽带相位系数信息;窄带相 位系数信息;NZP CSI-RS对应的相位系数信息。
本公开提供了相位系数信息包括的多种信息,通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
在一些实施方式中,幅度系数信息包括以下至少一项:宽带幅度系数信息;窄带幅度系数信息;NZP CSI-RS对应的幅度系数信息。
本公开提供了幅度系数信息包括的多种信息,通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
图5是根据一示例性实施例示出的另一种信道状态信息反馈装置示意图。参照图5,该装置300配置于网络设备,包括:发送模块301,用于向终端发送配置信息,配置信息用于终端确定至少一个信道测量资源CMR,其中,至少一个CMR中的目标CMR包括多个非零功率信道状态信息参考信号NZP CSI-RS;接收模块302,用于接收终端发送的信道状态信息CSI,CSI为终端基于目标CMR进行信道测量得到的。
本公开在发送至网络设备的信道状态信息中反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
在一些实施方式中,CSI包括:第一信息和第二信息,其中,第一信息和第二信息为目标CMR中NZP CSI-RS对应的不同指示信息;第一信息包括目标NZP CSI-RS指示信息,目标NZP CSI-RS指示信息用于指示NZP CSI-RS为目标NZP CSI-RS或非目标NZP CSI-RS,目标NZP CSI-RS为多个NZP CSI-RS中的部分或全部NZP CSI-RS。
本公开通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
在一些实施方式中,第二信息对应指示域的大小基于第一信息确定。
本公开通过动态调整CSI不同部分的大小,有利于反馈至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
在一些实施方式中,第一信息还包括以下至少一项:信道状态信息参考信号资源指示CRI信息;宽带信道质量信息CQI;非零宽带幅度系数个数;非零系数个数指示信息;非零系数位置指示信息;模式指示;秩rank指示信息。
本公开提供了CSI中包括的多种不同的第一信息,并通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少 CSI上报的信令开销。
在一些实施方式中,目标NZP CSI-RS指示信息包括N个比特位,N为目标CMR中包含的NZP CSI-RS的数量,其中N个比特位与N个NZP CSI-RS一一对应;响应于比特位的值为指定值,则表示比特位对应的NZP CSI-RS为目标NZP CSI-RS。
本公开通过目标NZP CSI-RS指示信息中的比特位指示多个NZP CSI-RS中的目标NZP CSI-RS,通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
在一些实施方式中,目标NZP CSI-RS指示信息通过N个非零系数个数指示信息进行指示,N为目标CMR中包含的NZP CSI-RS的数量,其中N个非零系数个数指示信息与N个NZP CSI-RS一一对应;响应于非零系数个数指示信息为指定值,则表示非零系数个数指示信息对应的NZP CSI-RS为目标NZP CSI-RS。
本公开通过目标NZP CSI-RS指示信息中的非零系数个数指示信息,可以指示多个NZP CSI-RS中的目标NZP CSI-RS。通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
在一些实施方式中,目标NZP CSI-RS指示信息通过N个非零系数位置指示信息进行指示,N为目标CMR中包含的NZP CSI-RS的数量,其中N个非零系数位置指示信息与N个NZP CSI-RS一一对应;响应于非零系数位置指示信息为指定值,则表示非零系数位置指示信息对应的NZP CSI-RS为目标NZP CSI-RS。
本公开通过目标NZP CSI-RS指示信息中的非零系数位置指示信息,可以指示多个NZP CSI-RS中的目标NZP CSI-RS。通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
在一些实施方式中,第二信息包括预编码矩阵指示PMI信息,PMI信息包括以下至少一项:空域基向量参数信息;频域基向量参数信息;非零系数位置指示信息;相位系数信息;幅度系数信息。
本公开提供了CSI的第二信息中包括的多种不同信息,并通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
在一些实施方式中,第二信息包括目标NZP CSI-RS对应的PMI信息。
本公开通过CSI的第二信息中包括的目标NZP CSI-RS对应的PMI信息,从而通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
在一些实施方式中,第二信息不包括目标NZP CSI-RS以外的NZP CSI-RS对应的PMI信息。
本公开通过CSI的第二信息中仅包括的目标NZP CSI-RS对应的PMI信息,而不包括非目标NZP CSI-RS对应的PMI信息,进而减小了CSI的大小。使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
在一些实施方式中,空域基向量参数信息包括以下至少一项:过采样信息;波束选择信息。
本公开提供了空域基向量参数信息包括的多种信息,通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
在一些实施方式中,频域基向量参数信息包括针对各个数据层,从多个频域单元中确定M个频域单元,其中,M为正整数。
本公开提供了频域基向量参数信息包括的多种信息,通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
在一些实施方式中,相位系数信息包括以下至少一项:宽带相位系数信息;窄带相位系数信息;NZP CSI-RS对应的相位系数信息。
本公开提供了相位系数信息包括的多种信息,通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
在一些实施方式中,幅度系数信息包括以下至少一项:宽带幅度系数信息;窄带幅度系数信息;NZP CSI-RS对应的幅度系数信息。
本公开提供了幅度系数信息包括的多种信息,通过CSI反馈基于信道测量资源测量的至少一个NZP CSI-RS对应的参数信息,使得当终端与多TRP通信时,可以减少CSI上报的信令开销。
关于上述实施例中的装置200和装置300,其中各个模块执行操作的具体方式已经在有关该方法的实施例中进行了详细描述,此处将不做详细阐述说明。
图6是根据一示例性实施例示出的一种信道状态信息反馈设备示意图。例如,设备400可以是移动电话,计算机,数字广播终端,消息收发设备,游戏控制台,平板设备,医疗设备,健身设备,个人数字助理等任意终端。
参照图6,设备400可以包括以下一个或多个组件:处理组件402,存储器404,电力 组件406,多媒体组件408,音频组件410,输入/输出(I/O)接口412,传感器组件414,以及通信组件416。
处理组件402通常控制设备400的整体操作,诸如与显示,电话呼叫,数据通信,相机操作和记录操作相关联的操作。处理组件402可以包括一个或多个处理器420来执行指令,以完成上述的方法的全部或部分步骤。此外,处理组件402可以包括一个或多个模块,便于处理组件402和其他组件之间的交互。例如,处理组件402可以包括多媒体模块,以方便多媒体组件408和处理组件402之间的交互。
存储器404被配置为存储各种类型的数据以支持在设备400的操作。这些数据的示例包括用于在设备400上操作的任何应用程序或方法的指令,联系人数据,电话簿数据,消息,图片,视频等。存储器404可以由任何类型的易失性或非易失性存储设备或者它们的组合实现,如静态随机存取存储器(SRAM),电可擦除可编程只读存储器(EEPROM),可擦除可编程只读存储器(EPROM),可编程只读存储器(PROM),只读存储器(ROM),磁存储器,快闪存储器,磁盘或光盘。
电力组件406为设备400的各种组件提供电力。电力组件406可以包括电源管理系统,一个或多个电源,及其他与为设备400生成、管理和分配电力相关联的组件。
多媒体组件408包括在所述设备400和用户之间的提供一个输出接口的屏幕。在一些实施例中,屏幕可以包括液晶显示器(LCD)和触摸面板(TP)。如果屏幕包括触摸面板,屏幕可以被实现为触摸屏,以接收来自用户的输入信号。触摸面板包括一个或多个触摸传感器以感测触摸、滑动和触摸面板上的手势。所述触摸传感器可以不仅感测触摸或滑动动作的边界,而且还检测与所述触摸或滑动操作相关的持续时间和压力。在一些实施例中,多媒体组件408包括一个前置摄像头和/或后置摄像头。当设备400处于操作模式,如拍摄模式或视频模式时,前置摄像头和/或后置摄像头可以接收外部的多媒体数据。每个前置摄像头和后置摄像头可以是一个固定的光学透镜系统或具有焦距和光学变焦能力。
音频组件410被配置为输出和/或输入音频信号。例如,音频组件410包括一个麦克风(MIC),当设备400处于操作模式,如呼叫模式、记录模式和语音识别模式时,麦克风被配置为接收外部音频信号。所接收的音频信号可以被进一步存储在存储器404或经由通信组件416发送。在一些实施例中,音频组件410还包括一个扬声器,用于输出音频信号。
I/O接口412为处理组件402和外围接口模块之间提供接口,上述外围接口模块可以是键盘,点击轮,按钮等。这些按钮可包括但不限于:主页按钮、音量按钮、启动按钮 和锁定按钮。
传感器组件414包括一个或多个传感器,用于为设备400提供各个方面的状态评估。例如,传感器组件414可以检测到设备400的打开/关闭状态,组件的相对定位,例如所述组件为设备400的显示器和小键盘,传感器组件414还可以检测设备400或设备400一个组件的位置改变,用户与设备400接触的存在或不存在,设备400方位或加速/减速和设备400的温度变化。传感器组件414可以包括接近传感器,被配置用来在没有任何的物理接触时检测附近物体的存在。传感器组件414还可以包括光传感器,如CMOS或CCD图像传感器,用于在成像应用中使用。在一些实施例中,该传感器组件414还可以包括加速度传感器,陀螺仪传感器,磁传感器,压力传感器或温度传感器。
通信组件416被配置为便于设备400和其他设备之间有线或无线方式的通信。设备400可以接入基于通信标准的无线网络,如WiFi,2G或3G,或它们的组合。在一个示例性实施例中,通信组件416经由广播信道接收来自外部广播管理系统的广播信号或广播相关信息。在一个示例性实施例中,所述通信组件416还包括近场通信(NFC)模块,以促进短程通信。例如,在NFC模块可基于射频识别(RFID)技术,红外数据协会(IrDA)技术,超宽带(UWB)技术,蓝牙(BT)技术和其他技术来实现。
在示例性实施例中,设备400可以被一个或多个应用专用集成电路(ASIC)、数字信号处理器(DSP)、数字信号处理设备(DSPD)、可编程逻辑器件(PLD)、现场可编程门阵列(FPGA)、控制器、微控制器、微处理器或其他电子元件实现,用于执行上述方法。
在示例性实施例中,还提供了一种包括指令的非临时性计算机可读存储介质,例如包括指令的存储器404,上述指令可由设备400的处理器420执行以完成上述方法。例如,所述非临时性计算机可读存储介质可以是ROM、随机存取存储器(RAM)、CD-ROM、磁带、软盘和光数据存储设备等。
图7是根据一示例性实施例示出的另一种信道状态信息反馈设备示意图。例如,设备500可以被提供为一基站,或者是服务器。参照图7,设备500包括处理组件522,其进一步包括一个或多个处理器,以及由存储器532所代表的存储器资源,用于存储可由处理组件522执行的指令,例如应用程序。存储器532中存储的应用程序可以包括一个或一个以上的每一个对应于一组指令的模块。此外,处理组件522被配置为执行指令,以执行上述方法。
设备500还可以包括一个电源组件526被配置为执行设备500的电源管理,一个有线或无线网络接口550被配置为将设备500连接到网络,和一个输入输出(I/O)接口558。 设备500可以操作基于存储在存储器532的操作系统,例如Windows ServerTM,Mac OS XTM,UnixTM,LinuxTM,FreeBSDTM或类似。
在一个实施例中,例如图1示出的,本公开还提供了一种通信系统,该通信系统包括终端和网络设备。其中,终端用于执行图2中描述的任意一种信道状态信息反馈方法;网络设备用于执行图3中描述的任意一种信道状态信息反馈方法。
本公开中,当终端与多个TRP或多个(remote radio head,RRH)服务时,通过上述的CSI上报方法,提高基于多TRP的传输性能的同时减少CSI上报的信令开销。
进一步可以理解的是,本公开中“多个”是指两个或两个以上,其它量词与之类似。“和/或”,描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。单数形式的“一种”、“所述”和“该”也旨在包括多数形式,除非上下文清楚地表示其他含义。
进一步可以理解的是,术语“第一”、“第二”等用于描述各种信息,但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开,并不表示特定的顺序或者重要程度。实际上,“第一”、“第二”等表述完全可以互换使用。例如,在不脱离本公开范围的情况下,第一信息也可以被称为第二信息,类似地,第二信息也可以被称为第一信息。
进一步可以理解的是,本公开中涉及到的“响应于”“如果”等词语的含义取决于语境以及实际使用的场景,如在此所使用的词语“响应于”可以被解释成为“在……时”或“当……时”或“如果”或“若”。
进一步可以理解的是,本公开实施例中尽管在附图中以特定的顺序描述操作,但是不应将其理解为要求按照所示的特定顺序或是串行顺序来执行这些操作,或是要求执行全部所示的操作以得到期望的结果。在特定环境中,多任务和并行处理可能是有利的。
本领域技术人员在考虑说明书及实践这里公开的发明后,将容易想到本公开的其它实施方案。本申请旨在涵盖本公开的任何变型、用途或者适应性变化,这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。
应当理解的是,本公开并不局限于上面已经描述并在附图中示出的精确结构,并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利范围来限制。

Claims (35)

  1. 一种信道状态信息反馈方法,其特征在于,所述方法应用于终端,包括:
    接收网络设备发送的配置信息,基于所述配置信息确定至少一个信道测量资源CMR,其中,所述至少一个CMR中的目标CMR包括多个非零功率信道状态信息参考信号NZP CSI-RS;
    向所述网络设备发送信道状态信息CSI,所述CSI为所述终端基于所述目标CMR进行信道测量得到的。
  2. 根据权利要求1所述的方法,其特征在于,所述CSI包括:第一信息和第二信息,其中,所述第一信息和所述第二信息为所述目标CMR中NZP CSI-RS对应的不同指示信息;
    所述第一信息包括目标NZP CSI-RS指示信息,所述目标NZP CSI-RS指示信息用于指示所述NZP CSI-RS为目标NZP CSI-RS或非目标NZP CSI-RS,所述目标NZP CSI-RS为所述多个NZP CSI-RS中的部分或全部NZP CSI-RS。
  3. 根据权利要求2所述的方法,其特征在于,所述第二信息对应指示域的大小基于所述第一信息确定。
  4. 根据权利要求2或3所述的方法,其特征在于,所述第一信息还包括以下至少一项:
    信道状态信息参考信号资源指示CRI信息;
    宽带信道质量信息CQI;
    非零宽带幅度系数个数;
    非零系数个数指示信息;
    非零系数位置指示信息;
    模式指示;
    秩rank指示信息。
  5. 根据权利要求2-4中任意一项所述的方法,其特征在于,所述目标NZP CSI-RS指示信息包括N个比特位,所述N为所述目标CMR中包含的NZP CSI-RS的数量,其中N个比特位与N个NZP CSI-RS一一对应;
    响应于所述比特位的值为指定值,则表示所述比特位对应的NZP CSI-RS为所述目标NZP CSI-RS。
  6. 根据权利要求2-4中任意一项所述的方法,其特征在于,所述目标NZP CSI-RS指示信息通过N个非零系数个数指示信息进行指示,所述N为所述目标CMR中包含的NZP  CSI-RS的数量,其中N个非零系数个数指示信息与N个NZP CSI-RS一一对应;
    响应于所述非零系数个数指示信息为指定值,则表示所述非零系数个数指示信息对应的NZP CSI-RS为目标NZP CSI-RS。
  7. 根据权利要求2-4中任意一项所述的方法,其特征在于,所述目标NZP CSI-RS指示信息通过N个非零系数位置指示信息进行指示,所述N为所述目标CMR中包含的NZP CSI-RS的数量,其中N个非零系数位置指示信息与N个NZP CSI-RS一一对应;
    响应于所述非零系数位置指示信息为指定值,则表示所述非零系数位置指示信息对应的NZP CSI-RS为目标NZP CSI-RS。
  8. 根据权利要求2-7中任意一项所述的方法,其特征在于,所述第二信息包括预编码矩阵指示PMI信息,所述PMI信息包括以下至少一项:
    空域基向量参数信息;
    频域基向量参数信息;
    非零系数位置指示信息;
    相位系数信息;
    幅度系数信息。
  9. 根据权利要求8所述的方法,其特征在于,所述第二信息包括目标NZP CSI-RS对应的PMI信息。
  10. 根据权利要求8或9所述的方法,其特征在于,所述第二信息不包括目标NZP CSI-RS以外的NZP CSI-RS对应的PMI信息。
  11. 根据权利要求8所述的方法,其特征在于,所述空域基向量参数信息包括以下至少一项:
    过采样信息;
    波束选择信息。
  12. 根据权利要求8所述的方法,其特征在于,所述频域基向量包括针对各个数据层,从多个频域单元中确定M个频域单元,其中,M为正整数。
  13. 根据权利要求8所述的方法,其特征在于,所述相位系数信息包括以下至少一项:
    宽带相位系数信息;
    窄带相位系数信息;
    NZP CSI-RS对应的相位系数信息。
  14. 根据权利要求8所述的方法,其特征在于,所述幅度系数信息包括以下至少一 项:
    宽带幅度系数信息;
    窄带幅度系数信息;
    NZP CSI-RS对应的幅度系数信息。
  15. 一种信道状态信息反馈方法,其特征在于,所述方法应用于网络设备,包括:
    向终端发送配置信息,所述配置信息用于所述终端确定至少一个信道测量资源CMR,其中,所述至少一个CMR中的目标CMR包括多个非零功率信道状态信息参考信号NZP CSI-RS;
    接收所述终端发送的信道状态信息CSI,所述CSI为所述终端基于所述目标CMR进行信道测量得到的。
  16. 根据权利要求15所述的方法,其特征在于,所述CSI包括:第一信息和第二信息,其中,所述第一信息和所述第二信息为所述目标CMR中NZP CSI-RS对应的不同指示信息;
    所述第一信息包括目标NZP CSI-RS指示信息,所述目标NZP CSI-RS指示信息用于指示所述NZP CSI-RS为目标NZP CSI-RS或非目标NZP CSI-RS,所述目标NZP CSI-RS为所述多个NZP CSI-RS中的部分或全部NZP CSI-RS。
  17. 根据权利要求16所述的方法,其特征在于,所述第二信息对应指示域的大小基于所述第一信息确定。
  18. 根据权利要求16或17所述的方法,其特征在于,所述第一信息还包括以下至少一项:
    信道状态信息参考信号资源指示CRI信息;
    宽带信道质量信息CQI;
    非零宽带幅度系数个数;
    非零系数个数指示信息;
    非零系数位置指示信息;
    模式指示;
    秩rank指示信息。
  19. 根据权利要求16-18中任意一项所述的方法,其特征在于,所述目标NZP CSI-RS指示信息包括N个比特位,所述N为所述目标CMR中包含的NZP CSI-RS的数量,其中N个比特位与N个NZP CSI-RS一一对应;
    响应于所述比特位的值为指定值,则表示所述比特位对应的NZP CSI-RS为所述目标NZP CSI-RS。
  20. 根据权利要求16-18中任意一项所述的方法,其特征在于,所述目标NZP CSI-RS指示信息通过N个非零系数个数指示信息进行指示,所述N为所述目标CMR中包含的NZP CSI-RS的数量,其中N个非零系数个数指示信息与N个NZP CSI-RS一一对应;
    响应于所述非零系数个数指示信息为指定值,则表示所述非零系数个数指示信息对应的NZP CSI-RS为目标NZP CSI-RS。
  21. 根据权利要求16-18中任意一项所述的方法,其特征在于,所述目标NZP CSI-RS指示信息通过N个非零系数位置指示信息进行指示,所述N为所述目标CMR中包含的NZP CSI-RS的数量,其中N个非零系数位置指示信息与N个NZP CSI-RS一一对应;
    响应于所述非零系数位置指示信息为指定值,则表示所述非零系数位置指示信息对应的NZP CSI-RS为目标NZP CSI-RS。
  22. 根据权利要求16-21中任意一项所述的方法,其特征在于,所述第二信息包括预编码矩阵指示PMI信息,所述PMI信息包括以下至少一项:
    空域基向量参数信息;
    频域基向量参数信息;
    非零系数位置指示信息;
    相位系数信息;
    幅度系数信息。
  23. 根据权利要求22所述的方法,其特征在于,所述第二信息包括目标NZP CSI-RS对应的PMI信息。
  24. 根据权利要求22或23所述的方法,其特征在于,所述第二信息不包括目标NZP CSI-RS以外的NZP CSI-RS对应的PMI信息。
  25. 根据权利要求22所述的方法,其特征在于,所述空域基向量参数信息包括以下至少一项:
    过采样信息;
    波束选择信息。
  26. 根据权利要求22所述的方法,其特征在于,所述频域基向量参数信息包括针对各个数据层,从多个频域单元中确定M个频域单元,其中,M为正整数。
  27. 根据权利要求22所述的方法,其特征在于,所述相位系数信息包括以下至少一项:
    宽带相位系数信息;
    窄带相位系数信息;
    NZP CSI-RS对应的相位系数信息。
  28. 根据权利要求22所述的方法,其特征在于,所述幅度系数信息包括以下至少一项:
    宽带幅度系数信息;
    窄带幅度系数信息;
    NZP CSI-RS对应的幅度系数信息。
  29. 一种信道状态信息反馈装置,其特征在于,所述装置配置于终端,包括:
    接收模块,用于接收网络设备发送的配置信息;
    确定模块,用于基于所述配置信息确定至少一个信道测量资源CMR,其中,所述至少一个CMR中的目标CMR包括多个非零功率信道状态信息参考信号NZP CSI-RS;
    发送模块,用于向所述网络设备发送信道状态信息CSI,所述CSI为所述终端基于所述目标CMR进行信道测量得到的。
  30. 一种信道状态信息反馈装置,其特征在于,所述装置配置于网络设备,包括:
    发送模块,用于向终端发送配置信息,所述配置信息用于所述终端确定至少一个信道测量资源CMR,其中,所述至少一个CMR中的目标CMR包括多个非零功率信道状态信息参考信号NZP CSI-RS;
    接收模块,用于接收所述终端发送的信道状态信息CSI,所述CSI为所述终端基于所述目标CMR进行信道测量得到的。
  31. 一种信道状态信息反馈设备,其特征在于,包括:
    处理器;
    用于存储处理器可执行指令的存储器;
    其中,所述处理器被配置为:执行权利要求1至14中任意一项所述的方法。
  32. 一种信道状态信息反馈设备,其特征在于,包括:
    处理器;
    用于存储处理器可执行指令的存储器;
    其中,所述处理器被配置为:执行权利要求15至28中任意一项所述的方法。
  33. 一种存储介质,其特征在于,所述存储介质中存储有指令,当所述存储介质中的指令由终端的处理器执行时,使得所述终端能够执行权利要求1至14中任意一项所述的方法。
  34. 一种存储介质,其特征在于,所述存储介质中存储有指令,当所述存储介质中的指令由网络设备的处理器执行时,使得所述网络设备能够执行权利要求15至28中任意一项所述的方法。
  35. 一种通信系统,包括终端和网络设备,其中,
    所述终端用于执行如权利要求1至14中任意一项所述的方法;
    所述网络设备用于执行如权利要求15至28中任意一项所述的方法。
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