Patent ID: 7116651
Filing Date: 2006-10-03
Classification: H04L,H04W,Y02D

Abstract:
1. A method for use by a feedback-signal-transmitting entity ( 12 ) in indicating to a feedback-signal-receiving entity ( 14 ) during a current time interval one or another state in a plurality of different possible states in any one of which the feedback-signal-transmitting entity can exist in any time interval in which the feedback-signal-transmitting entity either signals all or part of a payload message to the feedback-signal-receiving entity or instead operates in discontinuous mode, wherein the payload message is sent in response to a packet previously transmitted by the feedback-signal-receiving entity and conveys feedback indicating whether the packet was successfully received, and is transmitted in a predefined offset of one or more time intervals from the current time interval, and comprises a sequence of payload message symbols selected from a set of possible payload message symbols, the method comprising: the feedback-signal-transmitting entity signalling in the current time interval an indication symbol providing preamble or postamble signalling, in order to indicate whether the payload message is being or was transmitted in a predefined positive or negative offset of one or more time intervals from the current time interval; wherein the indication symbol differs from each of the possible payload message symbols, and the indication symbol is sent either in advance of or after the payload message.