Method and system for transmit power control management in hspa

Abstract

A method is provided for determining a transmission power control command in a User Equipment (UE) of a High Speed Packet Access (HSPA) network by combining Transmit Power Control (TPC) commands received during Discontinuous Transmission/Discontinuous Reception (DTX/DRX) modes. The combining is done on those TPC commands, which are received on different radio links after ignoring the TPC commands that might be received in a DownLink (DL) slot overlapping with no UpLink (UL) transmission. The UE using the combined TPC commands as derived for transmission of second UL Dedicated Physical Control CHannel (DPCCH) preamble and thereby leading to increase in link reliability and subsequent conservation of power by the UE.

What is claimed is: 
     
         1 . A method for determining a transmission power control command in a User Equipment (UE) of a High Speed Packet Access (HSPA) network by combining Transmit Power Control (TPC) commands received during Discontinuous Transmission/Discontinuous Reception (DTX/DRX) modes, the method comprising:
 said combining is done on those TPC commands which are received on different radio links after ignoring the TPC commands that might be received in a DownLink (DL) slot overlapping with no UpLink (UL) transmission,   said UE using said combined TPC commands as derived for transmission of second UL Dedicated Physical Control CHannel (DPCCH) preamble and thereby leading to increase in link reliability and subsequent conservation of power by the UE.   
     
     
         2 . The method according to  claim 1 , wherein same power level as derived in a previous slot using said combined TPC commands is used by said UE for resumption of transmission when all the TPC commands received in the DL slot overlapping with no UL transmission are UP. 
     
     
         3 . A method for determining transmission power control command during resumption of transmission of a second Dedicated Physical Control CHannel (DPCCH) by a User Equipment (UE) of a High Speed Packet Access (HSPA) network in Discontinuous Transmission/Discontinuous Reception (DTX/DRX) mode by combining Transmit Power Control (TPC) commands, wherein said TPC commands from each of radio links that were received by the UE while entering into a DTX gap are stored by said UE. 
     
     
         4 . The method according to  claim 3 , wherein said TPC commands could not be applied by said UE in previous TPC command determination.