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CN-122001419-A - Communication method and device

CN122001419ACN 122001419 ACN122001419 ACN 122001419ACN-122001419-A

Abstract

The embodiment of the application discloses a communication method and a communication device, wherein the method comprises the steps that a wireless unit receives scheduling information from a distributed unit and single-user weight of at least one terminal device, and the multi-user weight of the at least one terminal device is determined according to the scheduling information and the single-user weight of the at least one terminal device. The wireless unit determines the multi-user weight by receiving the single-user weight and the scheduling information to carry out beam forming. In the process, the distributed units do not need to send multi-user weights to the wireless units, so that the downlink forward-transmission flow is reduced, and the downlink forward-transmission flow limit of the physical optical module is met. Meanwhile, the single-user weight is determined only by the distributed units, so that the complexity of system calculation is reduced, the problem that the single-user weight used by the distributed units for determining the scheduling information is possibly inconsistent with the single-user weight used by the wireless units for determining the multi-user weight is avoided, and the accuracy of determining the multi-user weight is improved.

Inventors

  • LIU TIANCHEN
  • LI KUIKUI
  • YOU CHUNHUA

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260508
Application Date
20241104

Claims (20)

  1. 1.A method of communication, the method comprising: The wireless unit receives scheduling information from the distributed unit and single-user weight of at least one terminal device, wherein the terminal device corresponding to the scheduling information comprises the at least one terminal device; The wireless unit determines a multi-user weight of the at least one terminal device according to the single-user weight and the scheduling information of the at least one terminal device, wherein the multi-user weight is used for beam forming.
  2. 2. The method of claim 1, wherein the wireless unit receiving scheduling information from the distributed unit and single user weights for at least one terminal device, comprises: The wireless unit receives the scheduling information and the single user weight of the at least one terminal device from the distributed unit through a forwarding interface.
  3. 3. The method of claim 1 or 2, wherein the method further comprises: The wireless unit receives first indication information from the distributed unit, wherein the first indication information is used for indicating the wireless unit to execute the function of determining the multi-user weight or activating the function of determining the multi-user weight.
  4. 4. The method of claim 3, wherein the first indication information comprises an identification of the wireless unit.
  5. 5. The method of any one of claims 1-4, wherein the method further comprises: the wireless unit transmits first information to the distributed unit, the first information including at least one of a current traffic load, a processor utilization, and a device power consumption of the wireless unit.
  6. 6. The method of any one of claims 1-5, wherein the single-user weights comprise an identification of at least one unit frequency-domain resource, and a single-user weight corresponding to the identification of the at least one unit frequency-domain resource, and/or, The single-user weight includes an identification of at least one data stream and a single-user weight corresponding to the identification of the at least one data stream.
  7. 7. The method of claim 6, wherein the dimension of the single-user weights comprises at least one of a number of at least one terminal device associated with the single-user weights, a number of the at least one data stream, a number of transmit antennas of a network device, or a number of the at least one unit frequency domain resource; Wherein the network device comprises the distributed unit and the wireless unit.
  8. 8. The method according to any one of claims 1-7, wherein the scheduling information comprises at least one of a number of scheduled at least one unit frequency domain resource, a number of terminal devices paired with an nth unit frequency domain resource of the at least one unit frequency domain resource, and an identification of the terminal devices, a number of paired data streams of an ith terminal device of the nth unit frequency domain resource of the at least one unit frequency domain resource, or a unit frequency domain resource for single user pairing or a unit frequency domain resource for multi-user pairing of the at least one unit frequency domain resource, and a size of the unit frequency domain resource, where n and i are integers greater than or equal to 1.
  9. 9. The method according to any of claims 6-8, wherein the size of the unit frequency domain resource is a number of at least one of resource units, resource unit combinations, resource blocks, physical resource blocks and physical resource block combinations.
  10. 10. The method according to any of claims 1-9, wherein the single user weight is transmitted in a first time window, the size of the first time window being greater than or equal to the length of at least one time slot.
  11. 11. The method according to any of claims 1-10, wherein the scheduling information is transmitted in a second time window, the size of the second time window being less than or equal to the length of one time slot.
  12. 12. A method of communication, the method comprising: the distributed unit determines scheduling information and single-user weight of at least one terminal device, wherein the terminal device corresponding to the scheduling information comprises the at least one terminal device; The distributed unit transmits the single user weight and the scheduling information of the at least one terminal device to a wireless unit.
  13. 13. The method of claim 12, wherein the single-user weight and the scheduling information for the at least one terminal device are used to determine multi-user weights for the at least one terminal device, the multi-user weights being used for beamforming.
  14. 14. The method of claim 12 or 13, wherein the distributed unit transmitting the single user weight and the scheduling information of the at least one terminal device to a wireless unit comprises: The distributed unit sends the single user weight and the scheduling information of the at least one terminal device to the wireless unit through a forwarding interface.
  15. 15. The method of any one of claims 12-14, wherein the method further comprises: The distributed unit transmits first indication information to the wireless unit, wherein the first indication information is used for indicating the wireless unit to execute the function of determining the multi-user weight or activating the function of determining the multi-user weight.
  16. 16. The method of claim 15, wherein the first indication information comprises an identification of the wireless unit.
  17. 17. The method of any of claims 12-16, wherein the distributed unit sending first indication information to the wireless unit comprises: The distributed unit sends the first indication information to a wireless unit based on second information; Wherein the second information comprises at least one of a number of at least one unit frequency domain resource scheduled by the distributed unit, a number of terminal devices scheduled on each of the at least one unit frequency domain resource, a number of data streams transmitted by a network device to each of the at least one terminal device, or a number of transmit antennas of the network device, the network device comprising the distributed unit and the wireless unit.
  18. 18. The method of claim 17, wherein the distributed unit transmitting the first indication information to a wireless unit based on second information comprises: the distributed unit determines downlink forward traffic according to the second information; The distributed unit determines that the wireless unit executes the function of determining the multi-user weight according to the downlink forward traffic; the distributed unit transmits the first indication information to the wireless unit.
  19. 19. The method of claim 18, wherein the determining, by the distributed unit, a function performed by the wireless unit to determine multi-user weights based on the downstream forward traffic comprises: the distributed unit determines that the wireless unit executes the function of determining the multi-user weight according to the downlink forward traffic and the first information; wherein the first information includes at least one of a current traffic load, a processor utilization, or a device power consumption of the wireless unit.
  20. 20. The method of claim 19, wherein the determining, by the distributed unit, a function performed by the wireless unit to determine multi-user weights based on the downstream forward traffic and first information comprises: When the downlink forwarding flow is greater than or equal to a first threshold and the first information satisfies a preset range, the distributed unit determines that the wireless unit performs a function of determining a multi-user weight, or, And when the downlink forwarding flow is smaller than the first threshold value or the first information does not meet the preset range, the distributed unit determines that the distributed unit executes the function of determining the multi-user weight.

Description

Communication method and device Technical Field The present application relates to the field of communications technologies, and in particular, to a communications method and apparatus. Background Beam refers to the electromagnetic wave radiation pattern of an antenna system, and beam forming is the process of forming a beam. In a multi-antenna system, beam forming refers to a process of multiplying different radio frequency link signals by different weights to adjust the amplitude or phase of different radio frequency links, thereby forming a directional electromagnetic wave radiation direction. In a fifth generation mobile communication technology (5 th-generation, 5G) forward (fronthaul) network architecture, a Distributed Unit (DU) is required to send a control Plane (C-Plane) signal containing beamforming information to a Radio Unit (RU) to instruct the RU to perform corresponding beamforming. However, when the DU transmits information to the RU, the downlink traffic may exceed the upper traffic limit supported by the physical optical module, resulting in an information transmission error. Or weight information for beamforming between the DU and RU may be inconsistent due to transmission delay, resulting in a weight calculation error. Disclosure of Invention The embodiment of the application provides a communication method and a communication device, which can ensure that the downlink forward traffic meets the traffic limit of an optical module, reduce the complexity of system calculation and improve the accuracy of weight calculation. In a first aspect, an embodiment of the present application provides a communication method, which may be applied to a network side, for example, a wireless unit or a communication module in the wireless unit, or a circuit or a chip (such as a modem (modem) chip, also called a baseband (baseband) chip, or a system on chip (SoC) chip or a system in package (SYSTEMIN PACKAGE, SIP) chip) that is responsible for a communication function in the wireless unit, where the method is applied to the wireless unit, for example, and the method includes: The wireless unit receives scheduling information from the distributed unit and single-user weight of at least one terminal device, wherein the terminal device corresponding to the scheduling information comprises the at least one terminal device, and the wireless unit determines multi-user weight of the at least one terminal device according to the single-user weight of the at least one terminal device and the scheduling information, wherein the multi-user weight is used for beam forming. The wireless unit determines the multi-user weight by receiving the single-user weight and the scheduling information of at least one terminal device, and performs beam forming. In the process, the distributed units do not need to send multi-user weights to the wireless units, so that downlink forward traffic is reduced, and the downlink forward traffic limit of the physical optical module is met. Meanwhile, the single-user weight is determined only by the distributed units, so that the complexity of system calculation is reduced, the problem that the single-user weight used by the distributed units for determining the scheduling information is possibly inconsistent with the single-user weight used by the wireless units for determining the multi-user weight is avoided, and the accuracy of determining the multi-user weight is improved. In one possible design, the wireless unit receives the scheduling information and the single user weight of the at least one terminal device from the distributed unit via a forwarding interface. In one possible design, the wireless unit receives first indication information from the distributed unit, the first indication information being used to indicate whether a multi-user weight is determined by the wireless unit or whether a function of determining multi-user weights is activated. If the multi-user weight is determined by the wireless unit, the downlink forward traffic can be ensured to meet the traffic limit of the optical module, or if the multi-user weight is determined by the distributed unit, the wireless unit deactivates the function of determining the multi-user weight, and the resource utilization rate of the wireless unit can be ensured. In one possible design, the first indication information may include a bit, and when the bit is set to 1, the first indication information is used to indicate activation of a function for determining a multi-user weight. When the bit is set to 0, the first indication information is used to indicate that a function of determining a multi-user weight is deactivated. Whether the multi-user weight is determined is indicated by one bit, so that signaling overhead is reduced. In one possible design, when the first indication information includes an identification of a wireless unit, the first indication information is used to indicate that the RU performs a function of determin