Cooperative beamforming method, communication device and communication system

A beamforming method and a cooperative request technology, applied in the field of communication, can solve the problems of negative gain in average throughput of the cell, large loss of service users, and insignificant improvement of benefited users, etc.

Active Publication Date: 2021-10-22
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this solution may lead to no obvious improvement for beneficiary users after the coordinated cell performs interference avoidance on the beneficiary users, but the service users in the coordinated cell may suffer too much loss, resulting in a negative gain in the average throughput of the overall cell

Method used

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  • Cooperative beamforming method, communication device and communication system
  • Cooperative beamforming method, communication device and communication system
  • Cooperative beamforming method, communication device and communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0129] Embodiment 1 The service user of the first network device (corresponding to Cell 0) is UE 0, the two service users of the second network device (corresponding to Cell 1) are UE 1 and UE 2, and the second network device performs UE 0 Interference avoidance (one-way avoidance). UE 0, UE 1 and UE 2 are all terminal devices.

[0130] Figure 4 It is a flow chart of a cooperative beamforming method provided by an embodiment of the present application. like Figure 4 As shown, the method includes:

[0131] 401. The first network device sends a CBF cooperation request to the second network device.

[0132] The CBF cooperation request is used to request the second network device to perform interference avoidance for UE 0.

[0133] 402. The second network device respectively measures the SRSs of UE 1, UE 2, and UE 0, and respectively estimates uplink channel estimation matrices corresponding to the respective uplink channels.

[0134] For example, the uplink channel estima...

Embodiment 2

[0150] Embodiment 2 The service user of the first network device (corresponding to Cell 0) is UE 0, the two service users of the second network device (corresponding to Cell 1) are UE 1 and UE 2, and the second network device performs UE 0 Interference avoidance (one-way avoidance). UE 0, UE 1 and UE 2 are all terminal devices.

[0151] Figure 5 It is a flow chart of another cooperative beamforming method provided by the embodiment of the present application. like Figure 5 As shown, the method includes:

[0152] 501. The first network device sends a receiving weight acquisition request to UE 0 (corresponding to the second terminal device).

[0153] The receiving weight acquisition request is used to acquire the receiving weight matrix of UE 0. Figure 5The terminal equipment in is UE 0.

[0154] 502. UE 0 sends the current reception weight matrix to the first network device.

[0155] In response to the receiving weight acquisition request, UE 0 sends the current recei...

Embodiment 3

[0169] Embodiment 3 The service user of the first network device (corresponding to Cell 0) is UE 0, the two service users of the second network device (corresponding to Cell 1) are UE 1 and UE 2, and the second network device performs UE 0 For interference avoidance, the first network device performs interference avoidance for UE1 and UE2. UE 0, UE 1 and UE 2 are all terminal devices.

[0170] Image 6 It is a flow chart of another cooperative beamforming method provided by the embodiment of the present application. Such as Image 6 As shown, the method includes:

[0171] 601. The first network device sends a first CBF cooperation request for UE 0 to a second network device.

[0172] The first CBF cooperation request is used to request the second network device to perform interference avoidance for UE 0.

[0173] 602. The second network device sends a second CBF cooperation request for UE 1 and UE 2 to the first network device.

[0174] The second CBF cooperation request...

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Abstract

Disclosed are a cooperative beamforming method, a communication device and a communication system. The method comprises the steps that first network equipment determines a first zero-forcing matrix according to a first uplink channel estimation matrix and a first left singular matrix corresponding to an uplink channel of the first terminal equipment; the first network equipment determines a second zero-forcing matrix according to a second uplink channel estimation matrix corresponding to an uplink channel of second terminal equipment and first receiving weight matrix information provided by the second network equipment; the first network equipment performs power normalization on an inverse matrix of an intermediate equivalent channel matrix to determine a transmitting weight matrix, wherein the intermediate equivalent channel matrix comprises the first zero-forcing matrix and the second zero-forcing matrix; the first network equipment determines a transmission weight of the first terminal equipment according to the transmission weight matrix, and transmits a signal to the first terminal device according to the transmission weight of the first terminal equipment; therefore, the average throughput of the cell can be improved.

Description

technical field [0001] The present application relates to the communication field, and in particular to a cooperative beamforming method, communication device and communication system. Background technique [0002] In a communication system with independent scheduling and beamforming for each cell, if two terminals are geographically close to each other, signal interference may occur. For example, a user at the edge of a cell will receive simultaneous alignment of the beams of the main serving cell and the adjacent cell, which will greatly reduce the performance of the edge user. Therefore, it is necessary for the main serving cell to coordinately schedule the beams of adjacent cells of the edge users, so that the interference information is not aimed at the edge users as much as possible, so as to improve the performance of the edge users. [0003] In order to meet the throughput requirements of the cell edge users, a downlink mainly adopts coordinated beam forming (Coordi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/0426H04B7/06H04B7/08H04L25/02
CPCH04B7/043H04B7/0617H04B7/086H04L25/0204H04L25/0242H04L25/0224H04B7/08H04B7/06H04B7/0426H04L25/02
Inventor 文敏楼群芳
Owner HUAWEI TECH CO LTD
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