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Beam forming method, device, system and base station

A beamforming method and beamforming technology, applied in transmission systems, digital transmission systems, diversity/multi-antenna systems, etc., can solve problems such as poor performance and slow PDSCH beamforming, and improve efficiency and coverage and the effect on throughput

Pending Publication Date: 2022-07-01
CHINA TELECOM CORP LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the time-division scanning of multiple CSI-RS beams, it is necessary to measure multiple CSI-RS time-divisionally to determine the optimal CSI-RS beam direction and obtain downlink channel status information. There is a problem of slow PDSCH beamforming and poor performance.

Method used

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  • Beam forming method, device, system and base station
  • Beam forming method, device, system and base station
  • Beam forming method, device, system and base station

Examples

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Embodiment Construction

[0034] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of the components and steps, the numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.

[0035] Meanwhile, it should be understood that, for the convenience of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0036] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application or uses in any way.

[0037] Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be conside...

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Abstract

The invention provides a beam forming method, device and system and a base station, and relates to the field of mobile communication. The method comprises: according to first position information of a terminal, calculating a weight of CSI-RS beamforming, the first position information of the terminal comprising a first uplink angle of arrival of SRS-Pos sent by the terminal and a first distance from a base station to the terminal; according to the weight of the CSI-RS beam forming, the CSI-RS beam after the beam forming is directed to the terminal; receiving the CSI sent by the terminal; according to the CSI and the first position information of the terminal, calculating a beam forming weight of a PDSCH (Physical Downlink Shared Channel); and according to the weight of the beam forming of the PDSCH, carrying out the beam forming of the PDSCH. According to the invention, CSI-RS and PDSCH beam forming do not depend on a codebook, and the efficiency of FDD NR PDSCH beam forming is improved, so that the coverage range and throughput of FDD NR are improved.

Description

technical field [0001] The present disclosure relates to the field of mobile communications, and in particular, to a beamforming method, apparatus, system, and base station. Background technique [0002] In the TDD (Time Division Duplexing, Time Division Duplexing) NR (New Radio, New Air Interface) system, according to the reciprocity of the uplink and downlink channels, the downlink channel state information can be obtained according to the SRS (Sounding Reference Signal, sounding reference signal) to achieve Fast beamforming for PDSCH (Physical Downlink Shared Channel, Physical Downlink Shared Channel). [0003] In the FDD (Frequency Division Duplexing, Frequency Division Duplexing) NR system, since the uplink and downlink channels do not have reciprocity, the downlink channel state information cannot be obtained according to the SRS, and the channel state information cannot be obtained according to the CSI-RS (Channel State Information-Reference Signal, channel state info...

Claims

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Application Information

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IPC IPC(8): H04B7/06H04B17/318H04L5/00
CPCH04B7/0617H04B7/0626H04B7/063H04B17/318H04L5/0048
Inventor 张志荣魏明烁郭瀚谢伟良胡春雷
Owner CHINA TELECOM CORP LTD
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