Patent ID: 8363614
Filing Date: 2013-01-29
Classification: H04L,H04W

Abstract:
1. An apparatus for transmitting uplink packet data in a User Equipment UE of a mobile communication system, the UE including a plurality of hybrid automatic repeat request HARQ processes, comprising: a receiver for receiving a relative grant RG associated with a HARQ process from a Node B; a controller for setting an allowed maximum power ratio in the HARQ process to an allowed maximum power ratio in an immediately previous transmission time interval TTI of the HARQ process, if the RG indicates hold, wherein the RG indicates one of change and hold in the allowed maximum power ratio of a physical channel for transmitting uplink packet data to a reference physical channel; and a transmitter for transmitting packet data based on the set allowed maximum power ratio in the HARQ process to the Node B, wherein if the RG indicates up, the controller increases the latest power ratio used for a previous TTI in the same HARQ process by a predetermined level and sets the increased power ratio as the allowed maximum power ratio of the HARQ process, and wherein if the RG indicates down, the controller decreases the latest power ratio used for a previous TTI in the same HARQ process by a predetermined level and sets the decreased power ratio as the allowed maximum power ratio of the HARQ process.