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CN-122001412-A - Communication method, device, system, storage medium and program product

CN122001412ACN 122001412 ACN122001412 ACN 122001412ACN-122001412-A

Abstract

A communication method, device, system, storage medium and program product relate to the technical field of communication. The method comprises the steps of sending first information to an RU (remote user unit) by the DU, indicating that MU beamforming weight calculation is carried out on a first frequency domain resource set, obtaining a first MU beamforming weight calculation result corresponding to the first frequency domain resource set by the RU based on the first information, sending second information to the RU, indicating a second MU beamforming weight calculation result corresponding to a second frequency domain resource set by the DU, and obtaining an MU beamforming weight calculation result corresponding to a full frequency band by the RU based on the first MU beamforming weight calculation result and the second MU beamforming weight calculation result. By adopting the scheme of the application, the DU does not need to send the MU beamforming weight calculation result corresponding to the full frequency band to the RU, so that the downlink forward traffic can be reduced, and the RU only needs to calculate the first MU beamforming weight calculation result corresponding to the first frequency domain resource set, so that the calculation complexity of the RU can be reduced.

Inventors

  • LIU TIANCHEN
  • LI KUIKUI
  • YOU CHUNHUA

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260508
Application Date
20241101

Claims (20)

  1. 1.A method of communication, the method comprising: The wireless unit receives first information from the distributed unit, wherein the first information indicates that multi-user beamforming weight calculation is performed on a first frequency domain resource set; the wireless unit obtains a first multi-user beamforming weight calculation result corresponding to the first frequency domain resource set based on the first information; the wireless unit receives second information from the distributed unit, wherein the second information indicates a second multi-user beamforming weight calculation result corresponding to a second frequency domain resource set; The wireless unit obtains a multi-user beamforming weight calculation result corresponding to a full frequency band based on the first multi-user beamforming weight calculation result and the second multi-user beamforming weight calculation result, wherein the full frequency band comprises the first frequency domain resource set and the second frequency domain resource set.
  2. 2. The method of claim 1, wherein the first set of frequency domain resources is in a block distribution, the first information comprising at least one of an identification of a starting frequency domain resource unit in the first set of frequency domain resources, an identification of an ending frequency domain resource unit in the first set of frequency domain resources, and a number of frequency domain resource units in the first set of frequency domain resources.
  3. 3. The method of claim 1, wherein the first set of frequency domain resources is in a comb-like distribution, and the first information comprises at least one of an identification of a starting frequency domain resource unit in the first set of frequency domain resources, an identification of an ending frequency domain resource unit in the first set of frequency domain resources, a comb spacing between frequency domain resource units in the first set of frequency domain resources, and a comb length.
  4. 4. The method of claim 1, wherein the first set of frequency domain resources is irregularly distributed, the first information comprising at least one of an identification of a starting frequency domain resource unit in the first set of frequency domain resources, an identification of an ending frequency domain resource unit in the first set of frequency domain resources, and a bit map, wherein the bit map indicates whether each frequency domain resource unit in the full frequency band is multi-user beamforming weight calculation by the wireless unit.
  5. 5. The method of any of claims 1-4, wherein the first information comprises a predefined frequency domain division structure identification, the method further comprising: And the wireless unit queries a locally stored frequency domain division structure according to the frequency domain division structure identifier to acquire the first frequency domain resource set and the second frequency domain resource set.
  6. 6. The method of any one of claims 1-5, wherein the method further comprises: the wireless unit receives third information from the distributed unit, wherein the third information indicates layer 2 scheduling information corresponding to the first frequency domain resource set.
  7. 7. The method of claim 6, wherein the layer 2 scheduling information comprises at least one of a number of users corresponding to each of at least one frequency domain resource unit, an identification of each user corresponding to each of at least one frequency domain resource unit, a number of data streams corresponding to each user, a frequency domain resource unit for single user pairing or a unit frequency domain unit for multi-user pairing among at least one frequency domain resource unit, and a size of each of at least one frequency domain resource unit.
  8. 8. The method of claim 6 or 7, wherein the wireless unit obtaining a first multi-user beamforming weight calculation corresponding to the first set of frequency domain resources comprises: The wireless unit receives fourth information from the distributed unit, wherein the fourth information comprises an identifier of at least one user, and a channel estimation result and precoding matrix indication information of a full frequency band corresponding to each user in the at least one user; The wireless unit obtains a beam forming weight corresponding to each user based on a channel estimation result and precoding matrix indication information of a full frequency band corresponding to each user in the at least one user; And the wireless unit acquires a first multi-user beamforming weight calculation result based on the layer 2 scheduling information corresponding to the first frequency domain resource set and the beamforming weights corresponding to each user.
  9. 9. The method of claim 6 or 7, wherein the wireless unit obtaining a first multi-user beamforming weight calculation corresponding to the first set of frequency domain resources comprises: the wireless unit receives fifth information from the distributed unit, wherein the fifth information comprises a channel estimation result and precoding matrix indication information corresponding to the first frequency domain resource set and an identifier of at least one user associated with the channel estimation result and the precoding matrix indication information; The wireless unit obtains a beam forming weight corresponding to at least one associated user based on a channel estimation result and precoding matrix indication information corresponding to the first frequency domain resource set; And the wireless unit acquires a first multi-user beamforming weight calculation result based on the layer 2 scheduling information corresponding to the first frequency domain resource set and the beamforming weight corresponding to the associated at least one user.
  10. 10. The method of any of claims 1-9, wherein the first information is sent statically, periodically, or aperiodically.
  11. 11. The method according to any of claims 1-10, wherein the first frequency domain resource unit is any one of a resource unit, a combination of resource units, a resource block, a physical resource or a combination of physical resource blocks; The second frequency domain resource unit is any one of a resource unit, a resource unit combination, a resource block, a physical resource or a physical resource block combination.
  12. 12. A method of communication, the method comprising: The method comprises the steps that a distributed unit sends first information to a wireless unit, wherein the first information indicates that multi-user beamforming weight calculation is performed on a first frequency domain resource set; the distributed unit obtains a second multi-user beam forming weight calculation result corresponding to a second frequency domain resource set; The distributed unit sends second information to the wireless unit, wherein the second information indicates the calculation result of the second multi-user beamforming weight.
  13. 13. The method of claim 12, wherein the first set of frequency domain resources is in a block distribution, the first information comprising at least one of an identification of a starting frequency domain resource unit in the first set of frequency domain resources, an identification of an ending frequency domain resource unit in the first set of frequency domain resources, and a number of frequency domain resource units in the first set of frequency domain resources.
  14. 14. The method of claim 12, wherein the first set of frequency domain resources is in a comb-like distribution, and the first information comprises at least one of an identification of a starting frequency domain resource unit in the first set of frequency domain resources, an identification of an ending frequency domain resource unit in the first set of frequency domain resources, a comb spacing between frequency domain resource units in the first set of frequency domain resources, and a comb length.
  15. 15. The method of claim 12, wherein the first set of frequency domain resources is irregularly distributed, the first information comprising at least one of an identification of a starting frequency domain resource unit in the first set of frequency domain resources, an identification of an ending frequency domain resource unit in the first set of frequency domain resources, a bit bitmap, wherein the bit bitmap indicates whether each frequency domain resource unit in a full frequency band is multi-user beamforming weight calculated by the wireless unit, the full frequency band comprising the first set of frequency domain resources and the second set of frequency domain resources.
  16. 16. The method of any of claims 12-15, wherein the first information comprises a predefined frequency domain division structure identification, the first set of frequency domain resources and the second set of frequency domain resources being determined based on the frequency domain division structure identification.
  17. 17. The method of any one of claims 12-16, wherein the method further comprises: The distributed unit obtains layer 2 scheduling information corresponding to the full frequency band based on a channel estimation result of the full frequency band corresponding to each user in at least one user and a beam forming weight corresponding to each user; and the distributed unit sends third information to the wireless unit, wherein the third information indicates layer 2 scheduling information corresponding to the first frequency domain resource set.
  18. 18. The method of claim 17, wherein the layer 2 scheduling information comprises at least one of a number of users corresponding to each of at least one frequency domain resource unit, an identification of each user corresponding to each of at least one frequency domain resource unit, a number of data streams corresponding to each user, a frequency domain resource unit for single user pairing or a unit frequency domain unit for multi-user pairing among at least one frequency domain resource unit, and a size of each of at least one frequency domain resource unit.
  19. 19. The method of claim 17 or 18, wherein the method further comprises: the distributed unit transmits fourth information to the wireless unit, wherein the fourth information comprises the identification of at least one user, and the channel estimation result and precoding matrix indication information of the full frequency band corresponding to each user in the at least one user, or The distributed unit transmits fifth information to the wireless unit, wherein the fifth information comprises a channel estimation result and precoding matrix indication information corresponding to the first frequency domain resource set and an identification of at least one user associated with the channel estimation result and the precoding matrix indication information.
  20. 20. The method of any one of claims 17-19, wherein the obtaining, by the distributed unit, a second multi-user beamforming weight calculation corresponding to the second set of frequency domain resources, includes: the distributed unit obtains a beam forming weight corresponding to each user based on a channel estimation result and precoding matrix indication information of a full frequency band corresponding to each user in at least one user; And the distributed unit acquires a second multi-user beamforming weight calculation result corresponding to the second frequency domain resource set based on the layer 2 scheduling information and the beamforming weights corresponding to each user.

Description

Communication method, device, system, storage medium and program product Technical Field The present application relates to the field of communications technologies, and in particular, to a communications method, apparatus, system, storage medium, and program product. Background In a multi-user (MU) multiple-input and multiple-output (MIMO) system, transmission performance may be improved by a Beam Forming (BF) technique. The prior art includes a weight-based dynamic beamforming (weight-based dynamic beamforming, WDBF) technique, where MU weights are calculated by Distributed Units (DUs) and then transmitted to a Radio Unit (RU) via a forward interface. However, the transmission time granularity of the MU weight is small, and the data size is large, so that the traffic upper limit of the forwarding physical module is exceeded under the requirements of a larger antenna scale and a larger transmission bandwidth. In view of this, how to reduce downlink forwarding traffic in the forwarding architecture is a problem to be solved. Disclosure of Invention The application provides a communication method, a device, a system, a storage medium and a program product, which are used for reducing downlink forward traffic and reducing the computation complexity on RU. In a first aspect, a communication method is provided, which may be applied to an RU side, for example, an RU or a communication module in the RU, or may be applied to a circuit or a chip of the RU, such as a modem (modem) chip (also called baseband chip), or a system on chip (SoC) chip or a system in package (SYSTEMIN PACKAGE, SIP) chip including a modem core, for example, the method is applied to the RU. In the method, a RU receives first information from a DU, wherein the first information indicates that multi-user beamforming weight calculation is performed on a first frequency domain resource set, the RU obtains a first multi-user beamforming weight calculation result corresponding to the first frequency domain resource set based on the first information, the RU receives second information from the DU, wherein the second information indicates a second multi-user beamforming weight calculation result corresponding to a second frequency domain resource set, and the RU obtains a multi-user beamforming weight calculation result corresponding to a full frequency band based on the first multi-user beamforming weight calculation result and the second multi-user beamforming weight calculation result, wherein the full frequency band comprises the first frequency domain resource set and the second frequency domain resource set. By adopting the method, the division of the MU beamforming weight calculation is carried out through the RU and the DU, the RU acquires a first MU beamforming weight calculation result corresponding to the first frequency domain resource set, the DU acquires a second MU beamforming weight calculation result corresponding to the second frequency domain resource set and sends the second MU beamforming weight calculation result to the RU, and the RU acquires the MU beamforming weight calculation result corresponding to the full frequency band based on the first MU beamforming weight calculation result and the second MU beamforming weight calculation result, so that the DU does not need to send the MU beamforming weight calculation result corresponding to the full frequency band to the RU, the downlink forward traffic can be reduced, and the RU only needs to calculate the first MU beamforming weight calculation result corresponding to the first frequency domain resource set, and the calculation complexity of the RU can be reduced. Illustratively, downlink forwarding traffic refers to bandwidth or required traffic occupied by a DU transmitting information to an RU through a forwarding interface. With reference to the first aspect, in one possible design, the first set of frequency domain resources is distributed in a block shape, and the first information includes at least one of an identification of a start frequency domain resource unit in the first set of frequency domain resources, an identification of an end frequency domain resource unit in the first set of frequency domain resources, and a number of frequency domain resource units in the first set of frequency domain resources. With this design, the first set of frequency domain resources can be accurately determined by receiving an indication of the resources of the first set of frequency domain resources distributed in blocks. With reference to the first aspect, in yet another possible design, the first set of frequency domain resources is distributed in a comb-tooth shape, and the first information includes at least one of an identification of a start frequency domain resource unit in the first set of frequency domain resources, an identification of an end frequency domain resource unit in the first set of frequency domain resources, a comb tooth spacing between frequency domain resou