Patent ID: 8855699
Filing Date: 2014-10-07
Classification: H04W

Abstract:
1. A method for use in a cellular radio communication system where a mobile radio terminal is configured to communicate with a radio access network by transmitting information using enhanced uplink radio channels, the method comprising: determining a minimum value for a transmit power gain factor based on a maximum number of allowable transmission attempts over an enhanced uplink data channel for a communications session, and providing the determined transmit power gain factor minimum value for controlling a power level for a mobile radio terminal transmission on the enhanced uplink data channel relative to a transmit power for an uplink control channel transmission, wherein the determined transmit power gain factor minimum value is determined to ensure that a minimum data service requirement is provided over the enhanced uplink data channel, where in the determined transmit power gain factor minimum value is determined based on a selected enhanced uplink transmission format and the maximum number of allowable transmission attempts over the enhanced uplink data channel for a communications session, and wherein the determined transmit power gain factor minimum value is determined using a power scaling safety offset having a value between one and the maximum number of allowable transmission attempts.