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WO2024119382A1 - Procédé et appareil de rapport d'informations d'état de canal, et support de stockage - Google Patents

Procédé et appareil de rapport d'informations d'état de canal, et support de stockage Download PDF

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Publication number
WO2024119382A1
WO2024119382A1 PCT/CN2022/137040 CN2022137040W WO2024119382A1 WO 2024119382 A1 WO2024119382 A1 WO 2024119382A1 CN 2022137040 W CN2022137040 W CN 2022137040W WO 2024119382 A1 WO2024119382 A1 WO 2024119382A1
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WIPO (PCT)
Prior art keywords
csi
information
spatial basis
resource
combination
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PCT/CN2022/137040
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English (en)
Chinese (zh)
Inventor
李明菊
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Beijing Xiaomi Mobile Software Co Ltd
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Beijing Xiaomi Mobile Software Co Ltd
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Application filed by Beijing Xiaomi Mobile Software Co Ltd filed Critical Beijing Xiaomi Mobile Software Co Ltd
Priority to CN202280005497.9A priority Critical patent/CN115997405A/zh
Priority to PCT/CN2022/137040 priority patent/WO2024119382A1/fr
Publication of WO2024119382A1 publication Critical patent/WO2024119382A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition

Definitions

  • the present disclosure relates to the field of communication technology, and in particular to a channel state information (CSI) reporting method, device and storage medium.
  • CSI channel state information
  • CJT coherent joint transmission
  • M-TRP multi-transmission reception point
  • TRP transmission reception points
  • the network device When a network device provides services to a terminal through a TRP, the network device will configure the Channel Measurement Resource (CMR) for the TRP.
  • CMR Channel Measurement Resource
  • CSI Channel State Information
  • the present disclosure provides a channel state information reporting method, device and storage medium.
  • a channel state information reporting method which is applied to a terminal, and the method includes: receiving first configuration information sent by a network device, the first configuration information is used to configure at least one channel measurement resource CMR, and the at least one CMR includes N channel state information reference signal CSI-RS resources, where N is an integer greater than 1.
  • a channel state information reporting method which is applied to a network device, and the method includes: sending first configuration information to a terminal, the first configuration information is used to configure at least one channel measurement resource CMR, and the at least one CMR includes N channel state information reference signal CSI-RS resources, where N is an integer greater than 1.
  • a channel state information reporting device which is applied to a terminal, and the device includes: a receiving module, used to receive first configuration information sent by a network device, the first configuration information is used to configure at least one channel measurement resource CMR, and the at least one CMR includes N channel state information reference signal CSI-RS resources, where N is an integer greater than 1.
  • a channel state information reporting device which is applied to a network device, and the device includes: a sending module, used to send first configuration information to a terminal, the first configuration information is used to configure at least one channel measurement resource CMR, and the at least one CMR includes N channel state information reference signal CSI-RS resources, where N is an integer greater than 1.
  • a channel state information reporting device comprising: a processor; a memory for storing processor executable instructions; wherein the processor is configured to: execute the method described in the above-mentioned first aspect and any one of its embodiments.
  • a channel state information reporting device comprising: a processor; a memory for storing processor executable instructions; wherein the processor is configured to: execute the method described in the above second aspect and any one of its embodiments.
  • 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 the method described in the first aspect and any one of its embodiments.
  • 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 the method described in the above second aspect and any one of its embodiments.
  • a communication system comprising a terminal and a network device, wherein the terminal is used to execute the method described in the above-mentioned first aspect and any one of its embodiments; and the network device is used to execute the method described in the above-mentioned second aspect and any one of its embodiments.
  • the terminal receives first configuration information sent by a network device, wherein the first configuration information is used to configure at least one CMR, and the at least one CMR includes N CSI-RS resources.
  • the terminal can perform CSI measurement based on the configuration of the CMR, thereby improving the transmission performance of the multiple transmission and reception points.
  • Fig. 1 is a schematic diagram of a wireless communication system according to an exemplary embodiment.
  • Fig. 2 is a flow chart showing a method for reporting channel state information according to an exemplary embodiment.
  • Fig. 3 is a flow chart showing a method for reporting channel state information according to an exemplary embodiment.
  • Fig. 4 is a flow chart showing a method for reporting channel state information according to an exemplary embodiment.
  • Fig. 5 is a flow chart showing a method for reporting channel state information according to an exemplary embodiment.
  • Fig. 6 is a flow chart showing a method for reporting channel state information according to an exemplary embodiment.
  • Fig. 7 is a flow chart showing a method for reporting channel state information according to an exemplary embodiment.
  • Fig. 8 is a block diagram showing a channel state information reporting device according to an exemplary embodiment.
  • Fig. 9 is a block diagram showing a channel state information reporting device according to an exemplary embodiment.
  • Fig. 10 is a block diagram showing a device for reporting channel state information according to an exemplary embodiment.
  • Fig. 11 is a block diagram showing a device for reporting channel state information according to an exemplary embodiment.
  • the wireless communication system includes a network device and a terminal.
  • the terminal is connected to the network device through wireless resources and performs data transmission.
  • the wireless communication system shown in FIG1 is only for schematic illustration, and the wireless communication system may also include other network devices, such as core network devices, wireless relay devices, and wireless backhaul devices, which are not shown in FIG1.
  • the embodiments of the present disclosure do not limit the number of network devices and 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 (code division multiple access, CDMA), wideband code division multiple access (wideband code division multiple access, WCDMA), time division multiple access (time division multiple access, TDMA), frequency division multiple access (frequency division multiple access, FDMA), orthogonal frequency division multiple access (orthogonal frequency-division multiple access, OFDMA), single carrier frequency division multiple access (single carrier FDMA, SC-FDMA), carrier sense multiple access/collision avoidance (Carrier Sense Multiple Access with Collision Avoidance).
  • code division multiple access code division multiple access
  • CDMA code division multiple access
  • wideband code division multiple access wideband code division multiple access
  • WCDMA wideband code division multiple access
  • time division multiple access time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal frequency division multiple access
  • single carrier frequency division multiple access single carrier frequency division multiple access
  • the network can be divided into 2G (English: generation) network, 3G network, 4G network or future evolution network, such as 5G network, 5G network can also be called new wireless network (New Radio, NR).
  • 2G English: generation
  • 3G network 4G network or future evolution network, such as 5G network
  • 5G network can also be called new wireless network (New Radio, NR).
  • NR New Radio
  • the present disclosure sometimes simply refers to a wireless communication network as a network.
  • the wireless access network equipment may also be referred to as a wireless access network equipment.
  • the wireless access network equipment may be: a base station, an evolved node B (base station), 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 transmission and reception point (TRP), etc. It may also be a gNB in an NR system, or it may also be a component or a part of a base station. It should be understood that in the embodiments of the present disclosure, the specific technology and specific device form adopted by the network equipment are not limited.
  • the network equipment may provide communication coverage for a specific geographical area, and may communicate with a terminal located in the coverage area (cell).
  • the network equipment may also be a vehicle-mounted device.
  • the terminal 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 customer premises equipment (Customer Premise Equipment, CPE), 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.
  • V2X vehicle-to-everything
  • CJT coherent joint transmission
  • M-TRP multi-transmission reception point
  • TRP transmission reception points
  • the network device When a network device provides services to a terminal through a TRP, the network device will configure the Channel Measurement Resource (CMR) for the TRP.
  • CMR Channel Measurement Resource
  • CSI Channel State Information
  • the embodiment of the present disclosure provides a channel state information reporting method, wherein a terminal receives first configuration information sent by a network device, wherein the first configuration information is used to configure at least one CMR, and the at least one CMR includes N channel state information reference signal (Channel State Information Reference Signal, CSI-RS) resources.
  • CSI-RS Channel State Information Reference Signal
  • Fig. 2 is a flow chart of a channel state information reporting method according to an exemplary embodiment. As shown in Fig. 2 , the channel state information reporting method is used in a terminal and includes the following steps.
  • step S11 first configuration information sent by a network device is received, where the first configuration information is used to configure at least one CMR, where the at least one CMR includes N CSI-RS resources, where N is an integer greater than 1.
  • N CSI-RS resources correspond to N TRPs. That is, the network device indicates the CSI-RS resources corresponding to the N TRPs.
  • the terminal receives first configuration information sent by the network device, wherein the first configuration information is used to configure at least one CMR, and the at least one CMR includes N CSI-RS resources.
  • the terminal can perform CSI measurement based on the configuration of the CMR, thereby improving the transmission performance of the multiple transmission and reception points.
  • Fig. 3 is a flow chart of a channel state information reporting method according to an exemplary embodiment. As shown in Fig. 3 , the method includes the following steps.
  • step S21 second configuration information sent by the network device is received, where the second configuration information is used to configure at least one spatial basis vector combination and a combination index corresponding to at least one spatial basis vector combination, where at least one spatial basis vector combination includes the number of spatial basis vectors corresponding to each resource in N CSI-RS resources.
  • the spatial basis vectors can also be called beams.
  • the spatial basis vector is related to at least one of N1, N2, O1, and O2.
  • N1 is the number of antenna ports in the first dimension
  • N2 is the number of antenna ports in the second dimension
  • O1 is the oversampling rate in the first dimension
  • O2 is the oversampling rate in the second dimension.
  • the number of antenna ports can be understood as the number of CSI-RS ports.
  • the selection of spatial basis vectors may be understood as selecting a specified number of spatial basis vectors from the total number N1*N2 of antenna ports of each CSI-RS resource.
  • the second configuration information is used to configure at least one spatial basis vector combination and a combination index corresponding to at least one spatial basis vector combination, so that after the terminal determines the number of spatial basis vectors corresponding to each CSI-RS resource, it can determine the combination index corresponding to the spatial basis vector combination corresponding to the number of spatial basis vectors corresponding to N CSI-RS resources.
  • the embodiment shown in FIG. 2 can be implemented alone, that is, when the embodiment shown in FIG. 2 is implemented alone, the terminal can receive the first configuration information sent by the network device for configuring at least one CMR; and whether to receive the second configuration information for configuring at least one spatial basis vector combination and the combination index corresponding to at least one spatial basis vector combination, or the method used to determine at least one spatial basis vector combination and the combination index corresponding to at least one spatial basis vector combination, the embodiment of the present disclosure does not limit this.
  • the embodiment shown in FIG. 2 can also be implemented in combination with other embodiments of the present disclosure, for example, in combination with the embodiment shown in FIG.
  • the terminal can receive the first configuration information sent by the network device for configuring at least one CMR; and the terminal also receives the second configuration information sent by the network device for configuring at least one spatial basis vector combination and the combination index corresponding to at least one spatial basis vector combination.
  • the first configuration message and the second configuration message can be carried in different signaling or the same signaling, and the embodiment of the present disclosure does not limit this.
  • FIG. 4 is a flow chart showing a method for reporting channel state information according to an exemplary embodiment. As shown in FIG. 4 , the method includes the following steps.
  • step S31 based on the first configuration information and/or the second configuration information, N CSI-RS resources are measured, and first indication information and/or second indication information are determined.
  • the first indication information is used to indicate the target CSI-RS resource and/or non-target CSI-RS resource among the N CSI-RS resources, and the second indication information is used to indicate at least one combination index.
  • the spatial basis vector combination corresponding to the combination index indicated by the second indication information is used to determine the number of spatial basis vectors corresponding to the target CSI-RS resource.
  • the terminal can implicitly determine the combination index corresponding to at least one spatial basis vector combination, so there is no need for the network device to send the second configuration information.
  • the terminal measures N CSI-RS resources based on the first configuration information to determine the second indication information.
  • the spatial basis vector combination can include the following 9 combinations and corresponding combination indexes:
  • first indication information and/or second indication information is sent to a network device.
  • the network device can obtain the target CSI-RS resource selected by the terminal and the number of spatial basis vectors corresponding to the target CSI-RS resource, thereby improving the transmission performance of CJT based on multi-TRP.
  • the number of spatial basis vectors corresponding to the target CSI-RS resource is the number of spatial basis vectors corresponding to the target CSI-RS resource in the spatial basis vector combination corresponding to at least one combination index indicated by the second indication information.
  • the CMR configured by the first configuration information includes 4 CSI-RS resources
  • the first indication information indicates that the first three CSI-RS resources among the 4 CSI-RS resources are target CSI-RS resources
  • the last CSI-RS resource is a non-target CSI-RS resource
  • the number of spatial basis vectors selected for each target CSI-RS resource is 2, 4, and 2.
  • the combination corresponding to the combination index indicated by the second indication information is ⁇ 2, 4, 2, 6 ⁇ , which means that the number of spatial basis vectors corresponding to the target CSI-RS resources is 2, 4, and 2, respectively.
  • the combination ⁇ 2, 4, 2, 6 ⁇ corresponding to the combination index indicated by the second indication information is a combination configured by the network device through the second configuration information. If the CMR configured by the first configuration information includes N CSI-RS resources, the combination configured by the second configuration information will include the number of spatial basis vectors that may correspond to the N CSI-RS resources. Regardless of whether the terminal selects all N CSI-RS resources as target CSI-RS resources, the combination corresponding to the combination index indicated by the second indication information will include the number of spatial basis vectors corresponding to the N CSI-RS resources.
  • the number of spatial basis vectors corresponding to non-target CSI-RS resources is 0.
  • the number of spatial basis vectors actually corresponding to the non-target CSI-RS resources is 0.
  • the terminal selects part of the CSI-RS resources configured by the first configuration information (also referred to as target CSI-RS resources), and the other part of the CSI-RS resources are not selected by the terminal (also referred to as non-target CSI-RS resources), if the number of spatial basis vectors corresponding to each CSI-RS resource included in the CMR is determined only according to the second indication information, the network device needs to consider that the number of spatial basis vectors corresponding to the part of the CSI-RS resources not selected by the terminal is 0.
  • the network device needs to configure all combinations of spatial basis vector combinations corresponding to all CSI-RS resources for the terminal, wherein the number of spatial basis vectors corresponding to each CSI-RS resource includes 0 and non-0 (such as 2, 4, 6), which will result in a large RRC signaling overhead and a large number of combinations.
  • the number of bits required when the terminal indicates the selected combination index in the uplink control information (UCI) is also large, resulting in a large signaling overhead of the UCI.
  • the number of non-zero basis vectors includes only 2, the number of spatial basis vectors selected by the terminal for each target CSI-RS resource is 2. If the number of spatial basis vectors corresponding to the non-target CSI-RS resource is 0, the number of bits required for the combination index indicated by the second indication information must be able to cover the combination indexes corresponding to the following 15 combinations:
  • the spatial basis vector combination only needs ⁇ 2, 2, 2, 2 ⁇ to determine the number of spatial basis vectors corresponding to the target CSI-RS resources.
  • the first indication information indicates the target CSI-RS resources and the non-target CSI-RS resources
  • the spatial basis vector combination corresponding to the combination index indicated by the second indication information is ⁇ 2, 2, 2, 2 ⁇
  • the base station can determine that the number of spatial basis vectors corresponding to the target CSI-RS resources is 2, and the number of spatial basis vectors corresponding to the non-target CSI-RS resources is 0.
  • the number of non-zero basis vectors includes 2 and 4
  • the number of spatial basis vectors selected by the terminal for each target CSI-RS resource is 2 or 4. If the number of spatial basis vectors corresponding to the non-target CSI-RS resource is 0, the number of bits required for the combination index indicated by the second indication information must be able to cover the combination indexes corresponding to 81 combinations including 0, 2 and 4:
  • the spatial basis vector combination indicated by the second indication information only needs to indicate 16 combinations including 2 and 4, which greatly reduces the number of combinations corresponding to the combination index indicated by the second indication information.
  • the embodiment of the present disclosure combines the first indication information used to indicate the target CSI-RS resources and/or the non-target CSI-RS resources with the second indication information used to indicate the combination index to indicate the number of spatial basis vectors corresponding to the target CSI-RS resources.
  • the second indication information only needs to indicate the combination index corresponding to the number of spatial basis vectors corresponding to the target CSI-RS resources, which greatly reduces the number of combinations corresponding to the combination index indicated by the second indication information and saves the signaling overhead of the second indication information.
  • At least one combination index indicated by the second indication information is determined based on the first rule.
  • the first rule may be a pre-configured rule; or the first rule may be a rule specified by a protocol; or the first device may be a rule indicated by a network device, etc.
  • the embodiments of the present disclosure are not limited here.
  • the CMR configured by the first configuration information includes 4 CSI-RS resources, and the terminal selects the last three CSI-RS resources as target CSI-RS resources, and the number of spatial basis vectors corresponding to each target CSI-RS resource is determined to be 2, and the first CSI-RS resource is a non-target CSI-RS resource.
  • the spatial basis vector combinations configured for the 4 CSI-RS resources by the second configuration information there are multiple spatial basis vector combinations in which the number of spatial basis vectors corresponding to the last three CSI-RS resources is 2, while the number of spatial basis vectors corresponding to the first CSI-RS resource is 2 or 4 or 6, etc. For example: ⁇ 2, 2, 2, 2 ⁇ , ⁇ 4, 2, 2, 2 ⁇ , ⁇ 6, 2, 2, 2 ⁇ .
  • the terminal can determine the combination index indicated by the second indication information based on the first rule.
  • the first rule includes:
  • the index indicated by the second indication information is any one of a plurality of combination indexes corresponding to a plurality of spatial basis vector combinations.
  • multiple spatial basis vectors are combined into ⁇ 2, 2, 2, 2 ⁇ , ⁇ 4, 2, 2, 2 ⁇ , ⁇ 6, 2, 2, 2 ⁇
  • the combination index indicated by the second indication information may be the combination index corresponding to any one of the combinations ⁇ 2, 2, 2, 2 ⁇ , ⁇ 4, 2, 2, 2 ⁇ , ⁇ 6, 2, 2, 2 ⁇ .
  • the index indicated by the second indication information is a combination index corresponding to a combination with a smaller combination index value among multiple combination indexes corresponding to multiple spatial basis vector combinations.
  • multiple spatial basis vectors are combined into ⁇ 2, 2, 2, 2 ⁇ , ⁇ 4, 2, 2, 2 ⁇ , ⁇ 6, 2, 2, 2 ⁇ , among which the combination index corresponding to ⁇ 2, 2, 2, 2 ⁇ is smaller, so the combination index indicated by the second indication information can be the combination index corresponding to ⁇ 2, 2, 2, 2 ⁇ .
  • the index indicated by the second indication information is a combination index corresponding to a combination with a larger combination index value among multiple combination indexes corresponding to multiple spatial basis vector combinations.
  • multiple spatial basis vectors are combined into ⁇ 2, 2, 2, 2 ⁇ , ⁇ 4, 2, 2, 2 ⁇ , ⁇ 6, 2, 2, 2 ⁇ , among which the combination index corresponding to ⁇ 6, 2, 2, 2 ⁇ is larger, so the combination index indicated by the second indication information can be the combination index corresponding to ⁇ 6, 2, 2, 2 ⁇ .
  • the index indicated by the second indication information is a combination index corresponding to a combination of spatial basis vectors having a smaller number of spatial basis vectors corresponding to a designated non-target CSI-RS resource.
  • multiple spatial basis vector combinations are ⁇ 2, 2, 2, 2 ⁇ , ⁇ 4, 2, 2, 2 ⁇ , ⁇ 6, 2, 2, 2 ⁇ , and if only the first CSI-RS resource is a non-target CSI-RS resource, the designated non-target CSI-RS resource is the first CSI-RS resource.
  • the spatial basis vector combination with a smaller number of spatial basis vectors corresponding to the first CSI-RS resource is ⁇ 2, 2, 2, 2 ⁇ , so the combination index indicated by the second indication information can be the combination index corresponding to ⁇ 2, 2, 2, 2 ⁇ .
  • the index indicated by the second indication information is a combination index corresponding to a spatial basis vector combination having a larger number of spatial basis vectors corresponding to a designated non-target CSI-RS resource among multiple spatial basis vector combinations.
  • multiple spatial basis vector combinations are ⁇ 2, 2, 2, 2 ⁇ , ⁇ 4, 2, 2, 2 ⁇ , ⁇ 6, 2, 2, 2 ⁇ , and if only the first CSI-RS resource is a non-target CSI-RS resource, the designated non-target CSI-RS resource is the first CSI-RS resource.
  • the spatial basis vector combination with a larger number of spatial basis vectors corresponding to the first CSI-RS resource is ⁇ 6, 2, 2, 2 ⁇ , so the combination index indicated by the second indication information can be the combination index corresponding to ⁇ 6, 2, 2, 2 ⁇ .
  • the designated non-target CSI-RS resource when there is only one non-target CSI-RS resource, includes the one non-target CSI-RS resource.
  • specifying the non-target CSI-RS resources includes:
  • the corresponding non-target CSI-RS resource has a larger CSI-RS resource index.
  • the first configuration information configures the CMR for the terminal including four CSI-RS resources.
  • the terminal selects the first two CSI-RS resources as target CSI-RS resources, and the last two CSI-RS resources are non-target CSI-RS resources.
  • the number of spatial basis vectors corresponding to the first two CSI-RS resources selected by the terminal is 2, and the number of spatial basis vectors corresponding to the last two CSI-RS resources in different spatial basis vector combinations is different.
  • multiple spatial basis vector combinations are ⁇ 2, 2, 2, 2 ⁇ , ⁇ 2, 2, 4, 2 ⁇ , ⁇ 2, 2, 4, 6 ⁇ , ⁇ 2, 2, 6, 6 ⁇ , and so on.
  • the CSI-RS resource index corresponding to the third CSI-RS resource is the first resource index
  • the CSI-RS resource index corresponding to the fourth CSI-RS resource index is the second resource index
  • the first resource index is smaller than the second resource index
  • the designated non-target CSI-RS resources may be the third and fourth CSI-RS resources.
  • the index indicated by the second indication information is a combination index corresponding to a combination of spatial basis vectors with a smaller number of spatial basis vectors corresponding to the third and fourth CSI-RS resources. Since the combination of spatial basis vectors with a smaller number of spatial basis vectors corresponding to the third and fourth CSI-RS resources is ⁇ 2, 2, 2, 2 ⁇ , the combination index indicated by the second indication information may be a combination index corresponding to ⁇ 2, 2, 2, 2 ⁇ .
  • the designated non-target CSI-RS resources may be the third and fourth CSI-RS resources.
  • the index indicated by the second indication information is the combined index corresponding to the combination of spatial basis vectors with a larger number of spatial basis vectors corresponding to the third and fourth CSI-RS resources.
  • the combinations of spatial basis vectors with a larger number of spatial basis vectors corresponding to the third and fourth CSI-RS resources are both ⁇ 2, 2, 6, 6 ⁇ , so the combined index indicated by the second indication information may be the combined index corresponding to ⁇ 2, 2, 6, 6 ⁇ .
  • the designated non-target CSI-RS resource is a non-target CSI-RS resource with a smaller corresponding CSI-RS resource index
  • the designated non-target CSI-RS resource is a third CSI-RS resource.
  • the index indicated by the second indication information is a combined index corresponding to a combination of spatial basis vectors with a smaller number of spatial basis vectors corresponding to the third CSI-RS resource.
  • the combination of spatial basis vectors with a smaller number of spatial basis vectors corresponding to the third CSI-RS resource is ⁇ 2, 2, 2, 2 ⁇ , so the combined index indicated by the second indication information can be a combined index corresponding to ⁇ 2, 2, 2, 2 ⁇ .
  • the designated non-target CSI-RS resource is a non-target CSI-RS resource with a smaller corresponding CSI-RS resource index
  • the designated non-target CSI-RS resource is a third CSI-RS resource.
  • the index indicated by the second indication information is a combined index corresponding to a combination of spatial basis vectors with a larger number of spatial basis vectors corresponding to the third CSI-RS resource.
  • the combination of spatial basis vectors with a larger number of spatial basis vectors corresponding to the third CSI-RS resource is ⁇ 2, 2, 6, 6 ⁇ , so the combined index indicated by the second indication information can be a combined index corresponding to ⁇ 2, 2, 6, 6 ⁇ .
  • the designated non-target CSI-RS resource is a non-target CSI-RS resource corresponding to a larger CSI-RS resource index
  • the designated non-target CSI-RS resource is the fourth CSI-RS resource.
  • the index indicated by the second indication information is a combined index corresponding to a combination of spatial basis vectors with a smaller number of spatial basis vectors corresponding to the fourth CSI-RS resource.
  • the combination of spatial basis vectors with a smaller number of spatial basis vectors corresponding to the fourth CSI-RS resource is ⁇ 2, 2, 2, 2 ⁇ , so the combined index indicated by the second indication information can be a combined index corresponding to ⁇ 2, 2, 2, 2 ⁇ .
  • the designated non-target CSI-RS resource is a non-target CSI-RS resource with a larger corresponding CSI-RS resource index
  • the designated non-target CSI-RS resource is the fourth CSI-RS resource.
  • the index indicated by the second indication information is a combined index corresponding to a combination of spatial basis vectors with a larger number of spatial basis vectors corresponding to the fourth CSI-RS resource.
  • the combination of spatial basis vectors with a larger number of spatial basis vectors corresponding to the fourth CSI-RS resource is ⁇ 2, 2, 6, 6 ⁇ , so the combined index indicated by the second indication information can be a combined index corresponding to ⁇ 2, 2, 6, 6 ⁇ .
  • the network device can obtain the number of spatial basis vectors corresponding to the target CSI-RS resources.
  • the embodiment of the present disclosure can specify through a first rule which combination index the second indication information indicates, thereby clarifying the behavior of the terminal.
  • the smaller or larger involved in the above embodiments does not only mean the smallest or largest, but can also mean the second smallest, third smallest, and so on.
  • the combination index specifically indicated by the first rule can be determined according to the actual application scenario to clarify the behavior of the terminal.
  • the first indication information includes N bits, each of the N bits corresponds to a CSI-RS resource among N CSI-RS resources, and the different values of each bit are used to indicate that the corresponding CSI-RS resource is a target CSI-RS resource or a non-target CSI-RS resource.
  • bit value when the bit value is the first value, it indicates that the CSI-RS resource is a target CSI-RS resource.
  • bit value when the bit value is the second value, it indicates that the CSI-RS resource is a non-target CSI-RS resource.
  • the first value is 0, and the second value is 1. Or, the first value is 1, and the second value is 0.
  • the first indication information and the second indication information are carried in the CSI.
  • the first indication information and the second indication information are carried in the CSI, so that the first indication information and the second indication information can be reported simultaneously when the CSI is reported, thereby reducing signaling consumption.
  • CSI includes: first information and second information.
  • the first information corresponds to an indication field of a fixed size, and the size of the indication field corresponding to the second information is determined based on the first information; the first indication information and/or the second indication information is carried in the first information.
  • the CSI 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 size of the indication field corresponding to the first information may be a fixed value, such as a preset value, or a default size specified by a protocol.
  • the size of part 2 of the 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 the CSI, such as 8 bits or 16 bits.
  • the size of part 2 of CSI is determined based on the first indication information in part 1. If the first indication information in part 1 indicates more target CSI-RS resources, the size of part 2 will be larger. Conversely, if the first indication information in part 1 indicates less target CSI-RS resources, the size of part 2 will be smaller.
  • the size of part 2 of CSI is determined based on the second indication information in part 1. If the number of spatial basis vectors corresponding to the target CSI-RS resource indicated by the second indication information in part 1 is large, the size of part 2 will be larger. Conversely, if the number of spatial basis vectors corresponding to the target CSI-RS resource indicated by the first indication information in part 1 is small, the size of part 2 will be smaller.
  • 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 indicator (CRI); layer rank indication information; wideband channel quality information (CQI); number of non-zero wideband amplitude coefficients; non-zero coefficient number indication information; non-zero coefficient position indication information; and mode indication information.
  • CRI channel state information reference signal resource indicator
  • CQI wideband channel quality information
  • mode indication information number of non-zero wideband amplitude coefficients
  • non-zero coefficient number indication information non-zero coefficient position indication information
  • mode indication information mode indication information
  • the first information includes 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 includes 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 includes 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 includes 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, 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, codebook structure 1 is to feedback a frequency domain basis vector (frequency domain basis, FD basis) information for all CSI-RS resources included in a CMR; codebook structure 2 is to feedback a frequency domain basis vector information for each CSI-RS resource included in a CMR.
  • the codebook mode may also include other modes, which are not limited by the present disclosure.
  • the second information includes precoding matrix indicator (PMI) information.
  • PMI precoding matrix indicator
  • 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 also provides a channel state information reporting method applied to a network device.
  • FIG5 is a flow chart of a channel state information reporting method according to an exemplary embodiment. As shown in FIG5 , the channel state information reporting method is used in a network device and includes the following steps.
  • step S41 first configuration information is sent to a terminal, where the first configuration information is used to configure at least one CMR, where the at least one CMR includes N CSI-RS resources, where N is an integer greater than 1.
  • N CSI-RS resources correspond to N TRPs. That is, the network device indicates the CSI-RS resources corresponding to the N TRPs.
  • the network device sends first configuration information to the terminal, wherein the first configuration information is used to configure at least one CMR, and the at least one CMR includes N CSI-RS resources.
  • the terminal can perform CSI measurement based on the configuration of the CMR, thereby improving the transmission performance of the multiple transmission and reception points.
  • FIG6 is a flow chart of a channel state information reporting method according to an exemplary embodiment. As shown in FIG6 , the method includes the following steps.
  • step S51 second configuration information is sent to the terminal, where the second configuration information is used to configure at least one spatial basis vector combination and a combination index corresponding to at least one spatial basis vector combination, where at least one spatial basis vector combination includes the number of spatial basis vectors corresponding to each resource in N CSI-RS resources.
  • the spatial basis vectors can also be called beams.
  • the spatial basis vector is related to at least one of N1, N2, O1, and O2.
  • N1 is the number of antenna ports in the first dimension
  • N2 is the number of antenna ports in the second dimension
  • O1 is the oversampling rate in the first dimension
  • O2 is the oversampling rate in the second dimension.
  • the number of antenna ports can be understood as the number of CSI-RS ports.
  • the selection of spatial basis vectors may be understood as selecting a specified number of spatial basis vectors from the total number N1*N2 of antenna ports of each CSI-RS resource.
  • the second configuration information is used to configure at least one spatial basis vector combination and a combination index corresponding to at least one spatial basis vector combination, so that the terminal can determine the combination index corresponding to the spatial basis vector combination corresponding to the number of spatial basis vectors corresponding to N CSI-RS resources after determining the number of spatial basis vectors corresponding to each CSI-RS resource.
  • the embodiment shown in Figure 5 can be implemented separately, that is: when the embodiment shown in Figure 5 is implemented separately, the network device can send first configuration information for configuring at least one CMR to the terminal; and whether to send second configuration information for configuring at least one spatial basis vector combination and the combination index corresponding to at least one spatial basis vector combination is not limited in this embodiment of the present disclosure.
  • the embodiment shown in Figure 5 can also be implemented in combination with other embodiments of the present disclosure, for example, in combination with the embodiment shown in Figure 6; that is: the network device sends first configuration information for configuring at least one CMR to the terminal; and the network device also sends second configuration information for configuring at least one spatial basis vector combination and the combination index corresponding to at least one spatial basis vector combination to the terminal.
  • the first configuration message and the second configuration message can be carried in different signaling or the same signaling, and the embodiment of the present disclosure is not limited in this.
  • FIG. 7 is a flow chart of a channel state information reporting method according to an exemplary embodiment. As shown in FIG. 7 , the method includes the following steps.
  • step S61 first indication information and/or second indication information sent by a terminal is received.
  • the first indication information is used to indicate the target CSI-RS resource and/or non-target CSI-RS resource among the N CSI-RS resources, and the second indication information is used to indicate at least one combination index.
  • the spatial basis vector combination corresponding to the combination index indicated by the second indication information is used to determine the number of spatial basis vectors corresponding to the target CSI-RS resource.
  • the terminal can implicitly determine the combination index corresponding to at least one spatial basis vector combination, so the network device does not need to send the second configuration information to the terminal.
  • the terminal measures N CSI-RS resources based on the first configuration information to determine the second indication information.
  • the spatial basis vector combination can include the following 9 combinations and corresponding combination indexes:
  • a receiving terminal sends first indication information and/or second indication information.
  • the target CSI-RS resource or non-target CSI-RS resource selected by the terminal from N CSI-RS resources and the number of spatial basis vectors corresponding to the target CSI-RS resource can be determined, and the combination index corresponding to the combination of spatial basis vectors corresponding to the number of spatial basis vectors corresponding to the target CSI-RS resource can be determined, so that the network device can obtain the target CSI-RS resource selected by the terminal and the number of spatial basis vectors corresponding to the target CSI-RS resource, thereby improving the transmission performance of CJT based on multi-TRP.
  • the number of spatial basis vectors corresponding to the target CSI-RS resource is the number of spatial basis vectors corresponding to the target CSI-RS resource in the spatial basis vector combination corresponding to at least one combination index indicated by the second indication information.
  • the CMR configured by the first configuration information includes 4 CSI-RS resources
  • the first indication information indicates that the first three CSI-RS resources among the 4 CSI-RS resources are target CSI-RS resources
  • the last CSI-RS resource is a non-target CSI-RS resource
  • the number of spatial basis vectors selected for each target CSI-RS resource is 2, 4, and 2.
  • the combination corresponding to the combination index indicated by the second indication information is ⁇ 2, 4, 2, 6 ⁇ , which means that the number of spatial basis vectors corresponding to the target CSI-RS resources is 2, 4, and 2, respectively.
  • the combination ⁇ 2, 4, 2, 6 ⁇ corresponding to the combination index indicated by the second indication information is a combination configured by the network device through the second configuration information. If the CMR configured by the first configuration information includes N CSI-RS resources, the combination configured by the second configuration information will include the number of spatial basis vectors that may correspond to the N CSI-RS resources. Regardless of whether the terminal selects all N CSI-RS resources as target CSI-RS resources, the combination corresponding to the combination index indicated by the second indication information will include the number of spatial basis vectors corresponding to the N CSI-RS resources.
  • the number of spatial basis vectors corresponding to non-target CSI-RS resources is 0.
  • the number of spatial basis vectors actually corresponding to the non-target CSI-RS resources is 0.
  • the terminal selects part of the CSI-RS resources configured by the first configuration information (also referred to as target CSI-RS resources), and the other part of the CSI-RS resources are not selected by the terminal (also referred to as non-target CSI-RS resources), if the number of spatial basis vectors corresponding to each CSI-RS resource included in the CMR is determined only according to the second indication information, the network device needs to consider that the number of spatial basis vectors corresponding to the part of the CSI-RS resources not selected by the terminal is 0.
  • the network device needs to configure all combinations of spatial basis vector combinations corresponding to all CSI-RS resources for the terminal, wherein the number of spatial basis vectors corresponding to each CSI-RS resource includes 0 and non-0 (such as 2, 4, 6), which will result in a large RRC signaling overhead and a large number of combinations.
  • the number of bits required when the terminal indicates the selected combination index in the uplink control information (UCI) is also large, resulting in a large signaling overhead of the UCI.
  • the number of non-zero basis vectors includes only 2, the number of spatial basis vectors selected by the terminal for each target CSI-RS resource is 2. If the number of spatial basis vectors corresponding to the non-target CSI-RS resource is 0, the number of bits required for the combination index indicated by the second indication information must be able to cover the combination indexes corresponding to the following 15 combinations:
  • the spatial basis vector combination only needs ⁇ 2, 2, 2, 2 ⁇ to determine the number of spatial basis vectors corresponding to the target CSI-RS resources.
  • the first indication information indicates the target CSI-RS resources and the non-target CSI-RS resources
  • the spatial basis vector combination corresponding to the combination index indicated by the second indication information is ⁇ 2, 2, 2, 2 ⁇
  • the base station can determine that the number of spatial basis vectors corresponding to the target CSI-RS resources is 2, and the number of spatial basis vectors corresponding to the non-target CSI-RS resources is 0.
  • the number of non-zero basis vectors includes 2 and 4
  • the number of spatial basis vectors selected by the terminal for each target CSI-RS resource is 2 or 4. If the number of spatial basis vectors corresponding to the non-target CSI-RS resource is 0, the number of bits required for the combination index indicated by the second indication information must be able to cover the combination indexes corresponding to 81 combinations including 0, 2 and 4:
  • the spatial basis vector combination indicated by the second indication information only needs to indicate 16 combinations including 2 and 4, which greatly reduces the number of combinations corresponding to the combination index indicated by the second indication information.
  • the embodiment of the present disclosure combines the first indication information used to indicate the target CSI-RS resources and/or the non-target CSI-RS resources with the second indication information used to indicate the combination index to indicate the number of spatial basis vectors corresponding to the target CSI-RS resources.
  • the second indication information only needs to indicate the combination index corresponding to the number of spatial basis vectors corresponding to the target CSI-RS resources, which greatly reduces the number of combinations corresponding to the combination index indicated by the second indication information and saves the signaling overhead of the second indication information.
  • At least one combination index indicated by the second indication information is determined based on the first rule.
  • the first rule may be a pre-configured rule; or the first rule may be a rule specified by a protocol; or the first device may be a rule indicated by a network device, etc.
  • the embodiments of the present disclosure are not limited here.
  • the CMR configured by the first configuration information includes 4 CSI-RS resources, and the terminal selects the last three CSI-RS resources as target CSI-RS resources, and the number of spatial basis vectors corresponding to each target CSI-RS resource is determined to be 2, and the first CSI-RS resource is a non-target CSI-RS resource.
  • the spatial basis vector combinations configured by the second configuration information for 4 CSI-RS resources there are multiple spatial basis vector combinations in which the number of spatial basis vectors corresponding to the last three CSI-RS resources is 2, while the number of spatial basis vectors corresponding to the first CSI-RS resource is 2 or 4 or 6, etc. For example: ⁇ 2, 2, 2, 2 ⁇ , ⁇ 4, 2, 2, 2 ⁇ , ⁇ 6, 2, 2, 2 ⁇ .
  • the terminal can determine the combination index indicated by the second indication information based on the first rule.
  • the first rule includes:
  • the index indicated by the second indication information is any one of a plurality of combination indexes corresponding to a plurality of spatial basis vector combinations.
  • multiple spatial basis vectors are combined into ⁇ 2, 2, 2, 2 ⁇ , ⁇ 4, 2, 2, 2 ⁇ , ⁇ 6, 2, 2, 2 ⁇
  • the combination index indicated by the second indication information may be the combination index corresponding to any one of the combinations ⁇ 2, 2, 2, 2 ⁇ , ⁇ 4, 2, 2, 2 ⁇ , ⁇ 6, 2, 2, 2 ⁇ .
  • the index indicated by the second indication information is a combination index corresponding to a combination with a smaller combination index value among multiple combination indexes corresponding to multiple spatial basis vector combinations.
  • multiple spatial basis vectors are combined into ⁇ 2, 2, 2, 2 ⁇ , ⁇ 4, 2, 2, 2 ⁇ , ⁇ 6, 2, 2, 2 ⁇ , among which the combination index corresponding to ⁇ 2, 2, 2, 2 ⁇ is smaller, so the combination index indicated by the second indication information can be the combination index corresponding to ⁇ 2, 2, 2, 2 ⁇ .
  • the index indicated by the second indication information is a combination index corresponding to a combination with a larger combination index value among multiple combination indexes corresponding to multiple spatial basis vector combinations.
  • multiple spatial basis vectors are combined into ⁇ 2, 2, 2, 2 ⁇ , ⁇ 4, 2, 2, 2 ⁇ , ⁇ 6, 2, 2, 2 ⁇ , among which the combination index corresponding to ⁇ 6, 2, 2, 2 ⁇ is larger, so the combination index indicated by the second indication information can be the combination index corresponding to ⁇ 6, 2, 2, 2 ⁇ .
  • the index indicated by the second indication information is a combination index corresponding to a combination of spatial basis vectors having a smaller number of spatial basis vectors corresponding to a designated non-target CSI-RS resource.
  • multiple spatial basis vector combinations are ⁇ 2, 2, 2, 2 ⁇ , ⁇ 4, 2, 2, 2 ⁇ , ⁇ 6, 2, 2, 2 ⁇ , and if only the first CSI-RS resource is a non-target CSI-RS resource, the designated non-target CSI-RS resource is the first CSI-RS resource.
  • the spatial basis vector combination with a smaller number of spatial basis vectors corresponding to the first CSI-RS resource is ⁇ 2, 2, 2, 2 ⁇ , so the combination index indicated by the second indication information can be the combination index corresponding to ⁇ 2, 2, 2, 2 ⁇ .
  • the index indicated by the second indication information is a combination index corresponding to a combination of spatial basis vectors having a larger number of spatial basis vectors corresponding to a designated non-target CSI-RS resource among multiple spatial basis vector combinations.
  • multiple spatial basis vector combinations are ⁇ 2, 2, 2, 2 ⁇ , ⁇ 4, 2, 2, 2 ⁇ , ⁇ 6, 2, 2, 2 ⁇ , and if only the first CSI-RS resource is a non-target CSI-RS resource, the designated non-target CSI-RS resource is the first CSI-RS resource.
  • the spatial basis vector combination with a larger number of spatial basis vectors corresponding to the first CSI-RS resource is ⁇ 6, 2, 2, 2 ⁇ , so the combination index indicated by the second indication information may be the combination index corresponding to ⁇ 6, 2, 2, 2 ⁇ .
  • the designated non-target CSI-RS resource when there is only one non-target CSI-RS resource, includes the one non-target CSI-RS resource.
  • specifying the non-target CSI-RS resources includes:
  • the corresponding non-target CSI-RS resource has a larger CSI-RS resource index.
  • the first configuration information configures the CMR for the terminal including four CSI-RS resources.
  • the terminal selects the first two CSI-RS resources as target CSI-RS resources, and the last two CSI-RS resources are non-target CSI-RS resources.
  • the number of spatial basis vectors corresponding to the first two CSI-RS resources selected by the terminal is 2, and the number of spatial basis vectors corresponding to the last two CSI-RS resources in different spatial basis vector combinations is different.
  • multiple spatial basis vector combinations are ⁇ 2, 2, 2, 2 ⁇ , ⁇ 2, 2, 4, 2 ⁇ , ⁇ 2, 2, 4, 6 ⁇ , ⁇ 2, 2, 6, 6 ⁇ , and so on.
  • the CSI-RS resource index corresponding to the third CSI-RS resource is the first resource index
  • the CSI-RS resource index corresponding to the fourth CSI-RS resource index is the second resource index
  • the first resource index is smaller than the second resource index
  • the designated non-target CSI-RS resources may be the third and fourth CSI-RS resources.
  • the index indicated by the second indication information is the combined index corresponding to the combination of spatial basis vectors with a smaller number of spatial basis vectors corresponding to the third and fourth CSI-RS resources.
  • the combinations of spatial basis vectors with a smaller number of spatial basis vectors corresponding to the third and fourth CSI-RS resources are both ⁇ 2, 2, 2, 2 ⁇ , so the combined index indicated by the second indication information may be the combined index corresponding to ⁇ 2, 2, 2, 2 ⁇ .
  • the designated non-target CSI-RS resources may be the third and fourth CSI-RS resources.
  • the index indicated by the second indication information is the combination index corresponding to the combination of spatial basis vectors with a larger number of spatial basis vectors corresponding to the third and fourth CSI-RS resources. Since the combination of spatial basis vectors with a larger number of spatial basis vectors corresponding to the third and fourth CSI-RS resources is ⁇ 2, 2, 6, 6 ⁇ , the combination index indicated by the second indication information may be the combination index corresponding to ⁇ 2, 2, 6, 6 ⁇ .
  • the designated non-target CSI-RS resource is a non-target CSI-RS resource with a smaller corresponding CSI-RS resource index
  • the designated non-target CSI-RS resource is a third CSI-RS resource.
  • the index indicated by the second indication information is a combined index corresponding to a combination of spatial basis vectors with a smaller number of spatial basis vectors corresponding to the third CSI-RS resource.
  • the combination of spatial basis vectors with a smaller number of spatial basis vectors corresponding to the third CSI-RS resource is ⁇ 2, 2, 2, 2 ⁇ , so the combined index indicated by the second indication information can be a combined index corresponding to ⁇ 2, 2, 2, 2 ⁇ .
  • the designated non-target CSI-RS resource is a non-target CSI-RS resource with a smaller corresponding CSI-RS resource index
  • the designated non-target CSI-RS resource is a third CSI-RS resource.
  • the index indicated by the second indication information is a combined index corresponding to a combination of spatial basis vectors with a larger number of spatial basis vectors corresponding to the third CSI-RS resource.
  • the combination of spatial basis vectors with a larger number of spatial basis vectors corresponding to the third CSI-RS resource is ⁇ 2, 2, 6, 6 ⁇ , so the combined index indicated by the second indication information can be a combined index corresponding to ⁇ 2, 2, 6, 6 ⁇ .
  • the designated non-target CSI-RS resource is a non-target CSI-RS resource corresponding to a larger CSI-RS resource index
  • the designated non-target CSI-RS resource is the fourth CSI-RS resource.
  • the index indicated by the second indication information is a combined index corresponding to a combination of spatial basis vectors with a smaller number of spatial basis vectors corresponding to the fourth CSI-RS resource.
  • the combination of spatial basis vectors with a smaller number of spatial basis vectors corresponding to the fourth CSI-RS resource is ⁇ 2, 2, 2, 2 ⁇ , so the combined index indicated by the second indication information can be a combined index corresponding to ⁇ 2, 2, 2, 2 ⁇ .
  • the designated non-target CSI-RS resource is a non-target CSI-RS resource with a larger corresponding CSI-RS resource index
  • the designated non-target CSI-RS resource is the fourth CSI-RS resource.
  • the index indicated by the second indication information is a combined index corresponding to a combination of spatial basis vectors with a larger number of spatial basis vectors corresponding to the fourth CSI-RS resource.
  • the combination of spatial basis vectors with a larger number of spatial basis vectors corresponding to the fourth CSI-RS resource is ⁇ 2, 2, 6, 6 ⁇ , so the combined index indicated by the second indication information can be a combined index corresponding to ⁇ 2, 2, 6, 6 ⁇ .
  • the network device can obtain the number of spatial basis vectors corresponding to the target CSI-RS resources.
  • the embodiment of the present disclosure can specify through a first rule which combination index the second indication information indicates, thereby clarifying the behavior of the terminal.
  • the smaller or larger involved in the above embodiments does not only mean the smallest or largest, but can also mean the second smallest, third smallest, and so on.
  • the combination index specifically indicated by the first rule can be determined according to the actual application scenario to clarify the behavior of the terminal.
  • the first indication information includes N bits, each of the N bits corresponds to a CSI-RS resource among N CSI-RS resources, and the different values of each bit are used to indicate that the corresponding CSI-RS resource is a target CSI-RS resource or a non-target CSI-RS resource.
  • bit value when the bit value is the first value, it indicates that the CSI-RS resource is a target CSI-RS resource.
  • bit value when the bit value is the second value, it indicates that the CSI-RS resource is a non-target CSI-RS resource.
  • the first value is 0, and the second value is 1. Or, the first value is 1, and the second value is 0.
  • the first indication information and the second indication information are carried in the CSI.
  • the first indication information and the second indication information are carried in the CSI, so that the first indication information and the second indication information can be reported simultaneously when the CSI is reported, thereby reducing signaling consumption.
  • CSI includes: first information and second information.
  • the first information corresponds to an indication field of a fixed size, and the size of the indication field corresponding to the second information is determined based on the first information; the first indication information and/or the second indication information is carried in the first information.
  • the CSI 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 size of the indication field corresponding to the first information may be a fixed value, such as a preset value, or a default size specified by a protocol.
  • the size of part 2 of the 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 the CSI, such as 8 bits or 16 bits.
  • the size of part 2 of CSI is determined based on the first indication information in part 1. If the first indication information in part 1 indicates more target CSI-RS resources, the size of part 2 will be larger. Conversely, if the first indication information in part 1 indicates less target CSI-RS resources, the size of part 2 will be smaller.
  • the size of part 2 of CSI is determined based on the second indication information in part 1. If the number of spatial basis vectors corresponding to the target CSI-RS resource indicated by the second indication information in part 1 is large, the size of part 2 will be larger. Conversely, if the number of spatial basis vectors corresponding to the target CSI-RS resource indicated by the first indication information in part 1 is small, the size of part 2 will be smaller.
  • 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 indicator (CRI); layer rank indication information; wideband channel quality information (CQI); number of non-zero wideband amplitude coefficients; non-zero coefficient number indication information; non-zero coefficient position indication information; mode indication information.
  • CRI channel state information reference signal resource indicator
  • CQI wideband channel quality information
  • the first information includes 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 includes 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 includes 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 includes 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, 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, codebook structure 1 is to feedback a frequency domain basis vector (FD basis) information for all CSI-RS resources included in a CMR; codebook structure 2 is to feedback a frequency domain basis vector information for each CSI-RS resource included in a CMR.
  • the codebook mode may also include other modes, which are not limited by the present disclosure.
  • the second information includes precoding matrix indicator (PMI) information.
  • PMI precoding matrix indicator
  • 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.
  • an embodiment of the present disclosure also provides a channel state information reporting device.
  • the channel state information reporting device includes hardware structures and/or software modules corresponding to the execution of each function in order to realize the above functions.
  • the embodiment 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 embodiment of the present disclosure.
  • Fig. 8 is a block diagram of a channel state information reporting device according to an exemplary embodiment.
  • the device includes a receiving module 101.
  • the channel state information reporting device 100 is applied in a terminal.
  • the receiving module 101 is configured to receive first configuration information sent by a network device, where the first configuration information is used to configure at least one channel measurement resource CMR, where the at least one CMR includes N channel state information reference signal CSI-RS resources, where N is an integer greater than 1.
  • the receiving module 101 is further configured to receive second configuration information sent by the network device, where the second configuration information is used to configure at least one spatial basis vector combination and a combination index corresponding to the at least one spatial basis vector combination, where the at least one spatial basis vector combination includes the number of spatial basis vectors corresponding to each of the N CSI-RS resources.
  • the channel state information reporting device 100 further includes a processing module 102.
  • the processing module 102 is configured to measure the N CSI-RS resources based on the first configuration information and/or the second configuration information, and determine the first indication information and/or the second indication information;
  • the first indication information is used to indicate the target CSI-RS resource and/or non-target CSI-RS resource among the N CSI-RS resources, and the second indication information is used to indicate at least one combination index.
  • the channel state information reporting apparatus 100 further includes a sending module 103.
  • the sending module 103 is configured to send the first indication information and/or the second indication information to the network device.
  • the number of spatial basis vectors corresponding to the target CSI-RS resource is the number of spatial basis vectors corresponding to the target CSI-RS resource in the spatial basis vector combination corresponding to at least one combination index indicated by the second indication information.
  • the number of spatial basis vectors corresponding to the non-target CSI-RS resources is 0.
  • the number of spatial basis vectors corresponding to the target CSI-RS resources included in the combination is the same, and the number of spatial basis vectors corresponding to the non-target CSI-RS resources included is different, at least one of the combination indexes indicated by the second indication information is determined based on the first rule.
  • the first rule includes:
  • specifying a non-target CSI-RS resource includes:
  • the corresponding non-target CSI-RS resource has a larger CSI-RS resource index.
  • the first indication information includes N bits, each of the N bits corresponds to a CSI-RS resource among the N CSI-RS resources, and the different value of each bit is used to indicate that the corresponding CSI-RS resource is a target CSI-RS resource or a non-target CSI-RS resource.
  • the first indication information and the second indication information are carried in channel state information CSI.
  • the CSI includes: first information and second information, the first information corresponds to an indication field of a fixed size, and a size of the indication field corresponding to the second information is determined based on the first information;
  • the first indication information and/or the second indication information is carried in the first information.
  • the first information further includes at least one of the following information:
  • the second information includes precoding matrix indication PMI information
  • PMI information includes at least one of the following:
  • Fig. 9 is a block diagram of a channel state information reporting device according to an exemplary embodiment.
  • the device includes a sending module 201.
  • the channel state information reporting device 200 is applied to a network device.
  • the sending module 201 is configured to send first configuration information to the terminal, where the first configuration information is used to configure at least one channel measurement resource CMR, where the at least one CMR includes N channel state information reference signal CSI-RS resources, where N is an integer greater than 1.
  • the sending module 201 is also configured to send second configuration information to the terminal, and the second configuration information is used to configure at least one spatial basis vector combination and a combination index corresponding to at least one spatial basis vector combination, and at least one spatial basis vector combination includes the number of spatial basis vectors corresponding to each resource in N CSI-RS resources.
  • the channel state information reporting device 200 further includes a receiving module 202.
  • the receiving module 202 is configured to receive the first indication information and/or the second indication information sent by the terminal;
  • the first indication information is used to indicate the target CSI-RS resource and/or non-target CSI-RS resource among the N CSI-RS resources, and the second indication information is used to indicate at least one of the combination indexes.
  • the number of spatial basis vectors corresponding to the target CSI-RS resource is the number of spatial basis vectors corresponding to the target CSI-RS resource in the spatial basis vector combination corresponding to at least one combination index indicated by the second indication information.
  • the number of spatial basis vectors corresponding to non-target CSI-RS resources is 0.
  • the number of spatial basis vectors corresponding to the target CSI-RS resources included in the combination is the same, and the number of spatial basis vectors corresponding to the non-target CSI-RS resources included is different, at least one of the combination indexes indicated by the second indication information is determined based on the first rule.
  • the first rule includes:
  • specifying a non-target CSI-RS resource includes:
  • the corresponding non-target CSI-RS resource has a larger CSI-RS resource index.
  • the first indication information includes N bits, each of the N bits corresponds to a CSI-RS resource among the N CSI-RS resources, and a different value of each bit is used to indicate that the corresponding CSI-RS resource is a target CSI-RS resource or a non-target CSI-RS resource.
  • the first indication information and/or the second indication information is carried in channel state information CSI.
  • the CSI includes: first information and second information, the first information corresponds to an indication field of a fixed size, and a size of the indication field corresponding to the second information is determined based on the first information;
  • the first indication information and the second indication information are carried in the first information.
  • the first information further includes at least one of the following information:
  • the second information includes precoding matrix indication PMI information
  • the PMI information includes at least one of the following:
  • channel state information reporting device 100 and the channel state information reporting device 200 may also include other modules, such as a communication module.
  • modules such as a communication module.
  • Fig. 10 is a block diagram of a channel state information reporting device according to an exemplary embodiment.
  • the device 300 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.
  • apparatus 300 may include one or more of the following components: a processing component 302 , a memory 304 , a power component 306 , a multimedia component 308 , an audio component 310 , an input/output (I/O) interface 312 , a sensor component 314 , and a communication component 316 .
  • the processing component 302 generally controls the overall operation of the device 300, such as operations associated with display, phone calls, data communications, camera operations, and recording operations.
  • the processing component 302 may include one or more processors 320 to execute instructions to complete all or part of the steps of the above-mentioned method.
  • the processing component 302 may include one or more modules to facilitate the interaction between the processing component 302 and other components.
  • the processing component 302 may include a multimedia module to facilitate the interaction between the multimedia component 308 and the processing component 302.
  • the memory 304 is configured to store various types of data to support operations on the device 300. Examples of such data include instructions for any application or method operating on the device 300, contact data, phone book data, messages, pictures, videos, etc.
  • the memory 304 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 306 provides power to the various components of the device 300.
  • the power component 306 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device 300.
  • the multimedia component 308 includes a screen that provides an output interface between the device 300 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 308 includes a front camera and/or a rear camera. When the device 300 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 rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
  • the audio component 310 is configured to output and/or input audio signals.
  • the audio component 310 includes a microphone (MIC), and when the device 300 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 304 or sent via the communication component 316.
  • the audio component 310 also includes a speaker for outputting audio signals.
  • I/O interface 312 provides an interface between processing component 302 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 314 includes one or more sensors for providing various aspects of the status assessment of the device 300.
  • the sensor assembly 314 can detect the open/closed state of the device 300, the relative positioning of components, such as the display and keypad of the device 300, the sensor assembly 314 can also detect the position change of the device 300 or a component of the device 300, the presence or absence of user contact with the device 300, the orientation or acceleration/deceleration of the device 300, and the temperature change of the device 300.
  • the sensor assembly 314 can include a proximity sensor configured to detect the presence of a nearby object without any physical contact.
  • the sensor assembly 314 can also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications.
  • the sensor assembly 314 can also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
  • the communication component 316 is configured to facilitate wired or wireless communication between the device 300 and other devices.
  • the device 300 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof.
  • the communication component 316 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel.
  • the communication component 316 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 apparatus 300 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 method.
  • 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 method.
  • a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 304 including instructions, and the instructions can be executed by the processor 320 of the device 300 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.
  • FIG11 is a block diagram of a channel state information reporting device according to an exemplary embodiment.
  • the device 400 may be provided as a network device.
  • the device 400 includes a processing component 422, which further includes one or more processors, and a memory resource represented by a memory 432 for storing instructions executable by the processing component 422, such as an application.
  • the application stored in the memory 432 may include one or more modules, each of which corresponds to a set of instructions.
  • the processing component 422 is configured to execute instructions to perform the above method.
  • the device 400 may also include a power supply component 426 configured to perform power management of the device 400, a wired or wireless network interface 450 configured to connect the device 400 to a network, and an input/output (I/O) interface 458.
  • the device 400 may operate based on an operating system stored in the memory 432, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, or the like.
  • a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 432 including instructions, which can be executed by the processing component 422 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.
  • 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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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente divulgation se rapporte au domaine technique des communications, et concerne un procédé et un appareil de rapport d'informations d'état de canal, et un support de stockage, qui sont utilisés pour améliorer les performances de transmission multi-TRP. Le procédé consiste à : recevoir des premières informations de configuration envoyées par un dispositif de réseau, les premières informations de configuration étant utilisées pour configurer au moins une ressource de mesure de canal (CMR), qui comprend N ressources de signal de référence d'informations d'état de canal (CSI-RS), N étant un nombre entier supérieur à 1.
PCT/CN2022/137040 2022-12-06 2022-12-06 Procédé et appareil de rapport d'informations d'état de canal, et support de stockage Ceased WO2024119382A1 (fr)

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CN202280005497.9A CN115997405A (zh) 2022-12-06 2022-12-06 信道状态信息上报方法、装置及存储介质
PCT/CN2022/137040 WO2024119382A1 (fr) 2022-12-06 2022-12-06 Procédé et appareil de rapport d'informations d'état de canal, et support de stockage

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CN119449244A (zh) * 2023-07-31 2025-02-14 维沃移动通信有限公司 信道状态信息csi传输方法、装置和通信设备

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