Method and apparatus for high speed downlink packet access link adaptation

Abstract

A method of high speed downlink packet access (HSDPA) link adaptation, comprises receiving a channel quality measurement metric over a Measured Results on random access channel (RACH) information element (IE). The link is adapted based upon the received channel quality metric.

What is claimed is: 
     
         1 . A method of high speed downlink packet access (HSPDA) implemented in a wireless transmit/receive unit (WTRU), comprising:
 performing a channel quality metric measurement during a discontinuous reception (DRX) cycle of a network while the WTRU is in a state in which the WTRU does not have a dedicated link; and   transmitting to a network node channel quality data based on the channel quality metric measurement.   
     
     
         2 . The method of  claim 1  wherein the transmitting comprises transmitting the channel quality data in a radio resource control (RRC) message. 
     
     
         3 . The method of  claim 1  wherein transmitting comprises transmitting the channel quality data in a Measured Results on random access channel (RACH) information element (IE). 
     
     
         4 . The method of  claim 1  wherein performing of the channel quality metric measurement occurs during a period when the network is not sending data to the WTRU. 
     
     
         5 . The method of  claim 1  wherein the channel quality metric measurement includes at least one of an inter-RAT measurement and an inter-frequency measurement. 
     
     
         6 . The method of  claim 1  wherein a channel quality metric measurement period is matched to a multiple of the DRX cycle. 
     
     
         7 . The method of  claim 1  wherein the transmitting is performed while the WTRU is in a Cell_FACH state, a Cell —  PCH state, a URA_PCH state, or an Idle state. 
     
     
         8 . A processor associated with a wireless transmit/receive unit (WTRU) configured to perform a channel quality metric measurement of a network during a discontinuous reception (DRX) cycle of the network while the WTRU is in a state in which the WTRU does not have a dedicated link on the network. 
     
     
         9 . The processor of  claim 8  wherein the processor is configured to cause the transmission of channel quality data based on the channel quality metric measurement in a radio resource control (RRC) message. 
     
     
         10 . The processor of  claim 9  wherein the processor is configured to cause the transmission of the channel quality data in a Measured Results on random access channel (RACH) information element (IE). 
     
     
         11 . The processor of  claim 8  wherein the processor is configured to perform the channel quality metric measurement during a period when the network is not sending data to the WTRU. 
     
     
         12 . The processor of  claim 8  wherein the channel quality metric measurements include at least one of an inter-RAT measurement and an inter-frequency measurement. 
     
     
         13 . The processor of  claim 8  wherein the processor is configured to cause the transmission of the channel quality data while the WTRU is in a Cell_FACH state, a Cell —  PCH state, a URA_PCH state, or an Idle state.