Patent ID: 8149757
Filing Date: 2012-04-03
Classification: H04B,H04L

Abstract:
1. A method comprising: sending an attempt from a base station to a plurality of relay stations; receiving an acknowledgement from a mobile station when the attempt is successfully decoded by at least one relay station of the plurality of relay stations and the attempt is forwarded from the at least one relay station to the mobile station; when the attempt is not successfully decoded, identifying a first relay station from the plurality of relay stations which did not successfully receive and decode the attempt, and instructing a previous relay station to generate and send the attempt that was not successfully decoded, wherein the identifying comprises receiving, at the base station, feedback information from the at least one relay station; and identifying, at the base station, the first relay station which did not successfully receive and decode the attempt based on the feedback information received from the at least one relay station.