发明名称 |
METHOD, DEVICE, AND SYSTEM FOR TRANSMITTING CHANNEL INFORMATION |
摘要 |
The present invention discloses a method, device, and system for transmitting channel information, pertaining to the field of radio communication. The method for obtaining channel information includes: transmitting, by a beamformer, a request for obtaining channel information to a beamformee within the duration of a current first TXOP; receiving a null feedback frame transmitted by the beamformee within the duration of the current first TXOP; within the validity period of the channel information, if the beamformer obtains a second TXOP, transmitting, within the second TXOP, a channel information indication frame to request the channel information, and receiving the channel information transmitted by the beamformee. The system includes a beamformer and a beamformee. The present invention saves the signaling resources of the beamformer and reduces the power consumption of the beamformee. |
申请公布号 |
US2015349862(A1) |
申请公布日期 |
2015.12.03 |
申请号 |
US201514823650 |
申请日期 |
2015.08.11 |
申请人 |
Huawei Technologies Co., Ltd. |
发明人 |
YANG Xun;LI Yunbo;WU Tianyu;ZHU Hufei |
分类号 |
H04B7/04;H04W72/12;H04B7/06 |
主分类号 |
H04B7/04 |
代理机构 |
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代理人 |
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主权项 |
1. A method for requesting channel information, comprising:
transmitting, by a beamformer, a null data packet announcement (NDPA) and a null data packet (NDP) within a duration of a current first transmission opportunity (TXOP) to enable one or more beamformees to estimate channel information; and when the duration of the current first TXOP is insufficient for the beamformer to receive channel information of at least one beamformee and the beamformer obtains a second TXOP, transmitting, by the beamformer, a channel information indication frame to the at least one beamformee within a duration of the second TXOP, to request the channel information of the at least one beamformee. |
地址 |
Shenzhen CN |