Invention Grant
- Patent Title: Coordinating method and device for multi-input multi-output precoding of downlink multi-base station
- Patent Title (中): 下行多基站多输入多输出预编码的协调方法和装置
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Application No.: US13989753Application Date: 2011-06-21
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Publication No.: US09077404B2Publication Date: 2015-07-07
- Inventor: Xiaoshan Jia , Dengkui Zhu , Yanfeng Guan , Dihao Ning , Zhaohua Lu , Huahua Xiao , Xiaoxiao Jiao
- Applicant: Xiaoshan Jia , Dengkui Zhu , Yanfeng Guan , Dihao Ning , Zhaohua Lu , Huahua Xiao , Xiaoxiao Jiao
- Applicant Address: CN Shenzhen
- Assignee: ZTE CORPORATION
- Current Assignee: ZTE CORPORATION
- Current Assignee Address: CN Shenzhen
- Agency: Oppedahl Patent Law Firm LLC
- Priority: CN201110001783 20110106
- International Application: PCT/CN2011/076026 WO 20110621
- International Announcement: WO2012/092755 WO 20120712
- Main IPC: H04B7/04
- IPC: H04B7/04 ; H04B7/02 ; H04J11/00 ; H04L5/00 ; H04B7/06 ; H04W72/08

Abstract:
The disclosure discloses a method for coordinating downlink MIMO precoding among multiple BSs, including that: each BS first performs independent resource allocation to allocate resources to users of each BS, then receives PMI information fed back by a time-frequency resource block occupying MS in a respective cell, wherein the PMI information includes optimal and recommended or restrained PMIs corresponding to an MS; adjacent BSs perform information interaction with each other to acquire PMI information of MSs occupying the same time-frequency resource block in adjacent cells; and it is determined whether there is any conflict between MSs occupying the same time-frequency resource block in adjacent cells according to PMI information fed back by an MS in the current cell and interaction information from adjacent BSs, and a new PM is generated in a corresponding manner. The disclosure also discloses a device for implementing the method. The coordinating method and device of the disclosure can reduce or eliminate interference among users at a border through downlink resource allocation and precoding coordination between adjacent cells, thereby enhancing performance of the entire network.
Public/Granted literature
- US20130235842A1 Coordinating method and device for multi-input multi-output precoding of downlink multi-base station Public/Granted day:2013-09-12
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