Title:
PRE-CODING METHOD AND BASE STATION
Document Type and Number:
WIPO Patent Application WO/2016/054910
Kind Code:
A1
Abstract:
The embodiments of the present invention provide a pre-coding method. The method includes: obtaining channel information which is used for indicating a channel gain between a user equipment and a base station and a channel gain between a wiretapping receiver and the base station; determining, according to the channel information, an optimized pre-coding vector satisfying constraint conditions, the constraint conditions including a first constraint condition, a second constraint condition, and a third constraint condition, the first constraint condition being that the signal to noise ratios of the information received by the non-secrecy user equipment are greater than or equal to corresponding preset thresholds respectively, the second constraint condition being that the total transmission power of the base station is less than or equal to a preset power, the third constraint condition being that the secrecy capacity of the secrecy user equipment can be maximized; pre-coding, according to the optimized pre-coding vector, the information to be transmitted to the user equipment. The method in the embodiments of the present invention enables the pre-coding vector to satisfy that the quality of the information received by the non-secrecy user equipment is better than a requested threshold, and can maximize the secrecy capacity of the secrecy user equipment.
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Inventors:
WANG HUIMING (CN)
MA MANLI (CN)
WU RONG (CN)
MA MANLI (CN)
WU RONG (CN)
Application Number:
PCT/CN2015/077478
Publication Date:
April 14, 2016
Filing Date:
April 27, 2015
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04L25/49
Foreign References:
| CN103199962A | 2013-07-10 | |||
| CN102640447A | 2012-08-15 | |||
| CN102724026A | 2012-10-10 | |||
| CN102710310A | 2012-10-03 | |||
| US20130266142A1 | 2013-10-10 | |||
| US20130176979A1 | 2013-07-11 |
Attorney, Agent or Firm:
LONGSUN LEAD IP LTD. (CN)
北京龙双利达知识产权代理有限公司 (CN)
北京龙双利达知识产权代理有限公司 (CN)
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