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JP-2026514307-A - Communication methods, devices, and storage media

JP2026514307AJP 2026514307 AJP2026514307 AJP 2026514307AJP-2026514307-A

Abstract

This disclosure relates to a communication method, apparatus, device and storage medium, comprising the steps of receiving first information, the first information being used to determine that a CMR (Channel Measurement Resource) contains N NZP CSI-RS (Non-Zero Power Channel State Information Reference Signal) resources, where N is a positive integer, and, if N is greater than 1, determining whether a terminal selects and feeds back M NZP CSI-RS resources from the N NZP CSI-RS resources, where M is less than or equal to N. By determining whether to select and feed back M NZP CSI-RS resources from the N NZP CSI-RS resources using the first information, the feasibility of coherent joint transmission communication is improved. [Selection Diagram] Figure 2

Inventors

  • 李 明菊

Assignees

  • 北京小米移動軟件有限公司

Dates

Publication Date
20260508
Application Date
20230506

Claims (20)

  1. A communication method, wherein the method is performed by a terminal. A step of receiving first information, the first information being used to determine that the CMR (channel measurement resource) contains N NZP CSI-RS (non-zero power channel state information reference signal) resources, wherein N is a positive integer, A communication method characterized by comprising the step of determining whether the terminal selects and provides feedback on M NZP CSI-RS resources from the N NZP CSI-RS resources when N is greater than 1, wherein M is less than or equal to N.
  2. The communication method according to claim 1, wherein the first information is also used to determine at least one first beam number combination, and each beam number in the first beam number combination is associated with one NZP CSI-RS resource.
  3. The communication method according to claim 2, characterized in that the first information is also used to determine at least one first parameter combination, the first parameter combination includes a frequency domain basis combination parameter PV and a non-zero coefficient parameter β.
  4. The communication method according to claim 2 or 3, characterized in that if the second beam number combination and the combination of PV and β are not supported, the terminal decides not to select or provide feedback on M NZP CSI-RS resources from the N NZP CSI-RS resources, and the second beam number combination is a subset of the first beam number combination.
  5. If the second beam number combination and the combination of PV and β are not supported, In cases where the protocol specifies that it does not support the second beam number combination and the combination of PV and β, If the terminal does not support the second beam number combination and the combination of PV and β, The communication method according to claim 4, characterized in that the terminal supports the second beam number combination and the combination of PV and β, and the terminal does not support dynamic switching between a designated method and an S-TRP (single transmission and receiving point) communication method, the designated method employs M-TRP (multiple transmission and receiving point) communication, and the second beam number combination includes at least one of the cases of including one beam number.
  6. The communication method according to claim 2 or 3, characterized in that, when a third beam number combination and a combination of PV and β are supported, the terminal decides to select and feed back M NZP CSI-RS resources from the N NZP CSI-RS resources, and the third beam number combination is a subset of the first beam number combination.
  7. If the third beam number combination and the combination of PV and β are supported, When the protocol defines the third beam number combination supported by the protocol and the combination of PV and β, The communication method according to claim 6, characterized in that it includes at least one of the following: the terminal supports the third beam number combination and the combination of PV and β.
  8. The communication method according to claim 5, characterized in that the designated method is CJT (coherent joint transmission).
  9. The aforementioned CJT is A single CMR configured by a network device contains L NZP CSI-RS resources, where L is a positive integer, and each NZP CSI-RS resource corresponds to one TRP or one TRP group. The space domain basis vector is independently fed back to each NZP CSI-RS resource in multiple NZP CSI-RS resources, The frequency domain basis vector is independently fed back to each NZP CSI-RS resource in multiple NZP CSI-RS resources, The communication method according to claim 8, characterized by comprising at least one of the following: feeding back the same frequency domain basis vector to each NZP CSI-RS resource in a plurality of NZP CSI-RS resources.
  10. The first information is used to instruct the terminal not to select or provide feedback on M NZP CSI-RS resources from the N NZP CSI-RS resources, or The communication method according to any one of claims 1 to 9, characterized in that the first information is used to instruct the terminal to select and provide feedback on M NZP CSI-RS resources from the N NZP CSI-RS resources.
  11. The aforementioned method, The process further includes the step of transmitting a second piece of information, The second piece of information mentioned above is: The ability of the aforementioned terminal to support dynamic switching between the specified method and the S-TRP communication method, The aforementioned terminal does not support a second beam number combination, and a combination of PV and β. The communication method according to claim 1, characterized in that it includes at least one of a third beam number combination supported by the terminal and a combination of PV and β.
  12. A communication method, wherein the method is performed by a network device. A communication method characterized by comprising the step of transmitting first information, wherein the first information is used to determine that a CMR (channel measurement resource) contains N NZP CSI-RS (non-zero power channel state information reference signal) resources, where N is a positive integer.
  13. The communication method according to claim 12, wherein the first information is also used to determine at least one first beam number combination, and each beam number in the first beam number combination is associated with one NZP CSI-RS resource.
  14. The communication method according to claim 13, characterized in that the first information is also used to determine at least one first parameter combination, the first parameter combination includes a frequency domain basis combination parameter PV and a non-zero coefficient parameter β.
  15. The first information described above is used to instruct the terminal not to select or provide feedback on M NZP CSI-RS resources from the N NZP CSI-RS resources, where M is less than or equal to N, or The communication method according to any one of claims 12 to 14, characterized in that the first information is used to instruct the terminal to select and provide feedback on M NZP CSI-RS resources from the N NZP CSI-RS resources.
  16. The aforementioned method, The process further includes the step of receiving a second piece of information, The second piece of information mentioned above is: The ability of the terminal to support dynamic switching between the specified method and the S-TRP communication method, The aforementioned terminal does not support a second beam number combination, and a combination of PV and β. The communication method according to any one of claims 12 to 15, characterized in that it includes at least one of a third beam number combination supported by the terminal and a combination of PV and β.
  17. If the terminal does not support the second beam number combination and the combination of PV and β, In cases where the protocol specifies that it does not support the second beam number combination and the combination of PV and β, If the terminal does not support the second beam number combination and the combination of PV and β, The communication method according to claim 16, characterized in that the terminal supports a second beam number combination and a combination of PV and β, and the terminal does not support dynamic switching between a designated method and an S-TRP (single transmission/reception point) communication method, wherein the designated method employs M-TRP (multiple transmission/reception point) communication, and the second beam number combination includes at least one of the cases of including one beam number.
  18. If the terminal supports the third beam number combination and the combination of PV and β, When defining the third beam number combination supported by the protocol and the combination of PV and β, The communication method according to claim 16, characterized in that it includes at least one of the following: the terminal supports the third beam number combination and the combination of PV and β.
  19. The communication method according to claim 17, characterized in that the designated method is CJT (coherent joint transmission).
  20. The aforementioned CJT is The CMR configured by the network device includes L NZP CSI-RS resources, where L is a positive integer, and each NZP CSI-RS resource corresponds to one TRP or one TRP group. The process involves independently feeding back the pace domain basis vector to each NZP CSI-RS resource in multiple NZP CSI-RS resources, The frequency domain basis vector is independently fed back to each NZP CSI-RS resource in multiple NZP CSI-RS resources, The communication method according to claim 19, characterized by comprising at least one of the following: feeding back the same frequency domain basis vector to each NZP CSI-RS resource in a plurality of NZP CSI-RS resources.

Description

This disclosure relates to the field of telecommunications technology, and more particularly to communication methods, apparatus, devices, and storage media. Currently, a system based on coherent joint transmission (CJT) over a physical downlink shared channel (PDSCH) is being considered. It is possible to support up to four transmission and receiving points (TRPs) simultaneously providing services to the same terminal. The attached drawings are incorporated into the specification, constitute part of the specification, illustrate embodiments of the disclosure, and, together with the specification, illustrate the principles of the disclosure. A schematic diagram of a wireless communication system based on one embodiment is shown.A flowchart of a communication method based on one embodiment is shown.A flowchart of another communication method based on one embodiment is shown.A flowchart of yet another communication method based on one embodiment is shown.A flowchart of yet another communication method based on one embodiment is shown.This is a schematic diagram of a communication device based on one embodiment.This is a schematic diagram of another communication device based on one embodiment.This is a schematic diagram of a communication device based on one embodiment.This is a schematic diagram of another communication device based on one embodiment. Exemplary embodiments are described in detail in this disclosure, examples of which are shown in the accompanying drawings. Where the following description relates to the accompanying drawings, the same figures in different accompanying drawings indicate identical or similar elements unless otherwise noted. The embodiments described below in the exemplary embodiments do not represent all embodiments consistent with this disclosure. The communication method relating to this disclosure is applicable to the wireless communication system 100 shown in Figure 1. This network system may include a network device 110 and a terminal 120. It should be understood that the wireless communication system shown in Figure 1 is merely illustrative, and the wireless communication system may include other network devices not shown in Figure 1, such as a core network device, a wireless relay device, and a wireless backhaul device. The embodiments of this disclosure do not limit the number of network devices or terminals included in this wireless communication system. Furthermore, it can be understood that the wireless communication system in the embodiments of this disclosure refers to a network that provides wireless communication functionality. Wireless communication systems include 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), and single-carrier FDMA. Various communication technologies can be used, such as FDMA, SC-FDMA, and carrier-sense multiple access with collision avoidance. Different networks can be classified into future, evolved networks such as 2G (2G generation), 3G, 4G, or 5G (5th generation wireless communication system) networks, based on factors such as capacity, rate, and latency. 5G networks are sometimes referred to as NR. For convenience of explanation, wireless communication networks may be abbreviated as "networks" in this disclosure. Furthermore, the network device 110 referred to in this disclosure is also called a radio access network device. This radio access network device may be a base station, an evolved node B (eNB), a home base station, an access point (AP) in a Wi-Fi (wireless fidelity) system, a radio relay node, a radio backhaul node, a transmission point (TP) or TRP, or a gNB in an NR system, or a component or part of a base station. In the case of a V2X (Vehicle to Everything) system, the network device may be an in-vehicle device. It should be understood that the specific technologies and device forms employed in the network device in the embodiments of this disclosure are not limited. Furthermore, the terminal 120 referred to in this disclosure may also be called a terminal device, user equipment (UE), mobile station (MS), mobile terminal (MT), etc., and is a device that provides voice and/or data connectivity to a user. For example, a terminal is a portable device with wireless connectivity, an in-vehicle device, etc. Currently, examples of terminals include smartphones (mobilephones), pocket personal computers (PPCs), handheld computers, personal digital assistants (PDAs), notebook computers, tablets, wearable devices, or in-vehicle devices. Furthermore, in the case of a V2X (Vehicle to Everything) communication system, the terminal device may be an in-vehicle device. It should be understood that the embodiments of this disclosure do not limit the specific technologies or device forms employed in the terminal. In the embodiments disclosed herein, the network device 11