Cooperative base stations in wireless networks

Details Cooperative base stations in wireless networks Cooperative base stations in wireless networks

2007-11-02

2010-11-02

Cai, Wayne (Department: 2617)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S451000, C455S452200, C455S453000, C455S509000, C370S329000, C370S341000, C370S431000, C370S437000

Reexamination Certificate

active

07826853

ABSTRACT:
The embodiments of the invention provide an adaptive method for base station cooperation in a wireless network. In a multi-user communications network that includes base stations, and in which each base station is associated with a cell, and in which each cell includes one or more mobile stations, each base station determines pre-coding matrices for full-cooperation, semi-cooperation and non-cooperation. Each base stations also determines a sum rate SRfullfor full-cooperation, a sum rate SRsemifor semi-cooperation, and a sum rate SRnonfor non-cooperation. Then, each base station selects the pre-coding for full-cooperation, the pre-coding matrices for semi cooperation, or the pre-coding matrices for non cooperation. Each base station transmits signals according to the selected pre-coding matrices.

REFERENCES:
patent: 7113808 (2006-09-01), Hwang et al.
patent: 2006/0056534 (2006-03-01), Ionescu et al.
patent: 2008/0247488 (2008-10-01), Li et al.
patent: 2010/0002643 (2010-01-01), Han et al.
Zhang: “On the Fundamentally Asynchronous Nature of Interference in Cooperative Base Station Systems,” Jun. 2007.

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