Invention Grant
- Patent Title: Forward channel variation detection in a wireless communication system
- Patent Title (中): 无线通信系统中的前向信道变化检测
-
Application No.: US13767414Application Date: 2013-02-14
-
Publication No.: US08902961B1Publication Date: 2014-12-02
- Inventor: Rohit U. Nabar , Hongyuan Zhang , Jungwon Lee
- Applicant: Marvell International Ltd.
- Applicant Address: BM Hamilton
- Assignee: Marvell International Ltd.
- Current Assignee: Marvell International Ltd.
- Current Assignee Address: BM Hamilton
- Main IPC: H04L1/00
- IPC: H04L1/00 ; H04B7/04

Abstract:
A method in a wireless communication system having a forward channel corresponding to transmissions from a first device to a second device, and a reverse channel corresponding to transmissions from the second device to the first device, includes initiating, at the first device, a first update of a steering matrix. The steering matrix is used to beamform transmissions on the forward channel. The method also includes monitoring, at the first device, a plurality of reverse channel estimates corresponding to the reverse channel, determining, at the first device, a metric indicative of a rate of change in the reverse channel based on the plurality of reverse channel estimates, and initiating, at the first device, a second update of the steering matrix based on a comparison between (i) the metric indicative of the rate of change in the reverse channel and (ii) a threshold.
Information query