Title:
ワイヤレスシステムにおける非ゼロ電力ビームのための技法
Document Type and Number:
Japanese Patent JP7239555
Kind Code:
B2
Abstract:
Some wireless communication networks may improve communication reliability and/or throughput using multiple-input, multiple-output (MIMO) schemes. MIMO operation may in turn be supported by the use of channel state information reference signals (CSI-RS), which may allow communicating devices to estimate and leverage multipath channel conditions. However, the signaling used to support such communications may consume significant resources. In accordance with the described techniques, a user equipment (UE) may identify non-zero-power beams based on received CSI-RS. The non-zero-power beams may contribute to the final precoding vector. Rather than transmitting beam coefficients relating to zero-power beams, the UE may instead indicate a presence of these zero-power beams to the base station (e.g., by indicating a number of non-zero-power beams). Such techniques may reduce overhead of the communications or otherwise benefit the system.
Inventors:
Chenshi Hao
Yoo Jiang
Lian Min U
Chao Wei
Wanshi Chen
Hao Shu
Yoo Jiang
Lian Min U
Chao Wei
Wanshi Chen
Hao Shu
Application Number:
JP2020506235A
Publication Date:
March 14, 2023
Filing Date:
August 10, 2018
Export Citation:
Assignee:
Qualcomm, Inc.
International Classes:
H04W24/10; H04B7/0417; H04B7/0456; H04B7/06; H04B7/08; H04L27/26; H04W16/28
Domestic Patent References:
| JP2017537486A |
Foreign References:
| WO2016056980A1 | ||||
| US20160359538 |
Other References:
Qualcomm Incorporated,Details of CSI framework[online],3GPP TSG RAN WG1 adhoc_NR_AH_1706 R1-1711162,2017年06月17日
Attorney, Agent or Firm:
Murayama Yasuhiko
Shinpei Kuroda
Shinpei Kuroda
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