Method And Apparatus For Handling Uplink Transmissions using Multiple Uplink Carriers

Abstract

A method and an apparatus for uplink transmission using multiple uplink carriers are disclosed. A wireless transmit/receive unit (WTRU) selects a dedicated channel medium access control (MAC-d) flow with highest priority data to be transmitted and performs uplink carrier selection and enhanced dedicated channel (E-DCH) transport format combination (E-TFC) restriction and selection to select a carrier among a plurality of carriers and select an E-TFC based on a maximum supported payload, a remaining scheduled grant payload of the selected carrier and a remaining non-scheduled grant payload. The WTRU then generates a medium access control (MAC) protocol data unit (PDU) for E-DCH transmission via the selected carrier based on the selected E-TFC.

1 - 28 . (canceled) 
     
     
         29 . A method for allocating power in a wireless transmit/receive unit (WTRU), the method comprising:
 determining that the WTRU is configured with a plurality of uplink carriers including a primary carrier;   determining a power for transmitting one or more non-scheduled MAC-d flows;   allocating the power for transmitting the one or more non-scheduled MAC-d flows to the primary carrier; and   transmitting the one or more non-scheduled MAC-d flows on the primary carrier.   
     
     
         30 . The method of  claim 29 , further comprising:
 determining an available power for transmitting scheduled transmissions on the plurality of uplink carriers; and   allocating the available power for transmitting the scheduled transmissions among the plurality of uplink carriers.   
     
     
         31 . The method of  claim 30 , wherein the available power for transmitting the scheduled transmissions is determined by subtracting, from a maximum WTRU transmit power:
 a sum of power associated with a dedicated physical control channel (DPCCH) for the plurality of uplink carriers,   a power associated with a high speed dedicated physical control channel (HS-DPCCH), and   the power for transmitting the one or more non-scheduled MAC-d flows.   
     
     
         32 . The method of  claim 31 , wherein the available power for transmitting the scheduled transmissions is further determined based on a power associated with an enhanced dedicated channel (E-DCH) DPCCH (E-DPCCH). 
     
     
         33 . The method of  claim 30 , wherein the available power for transmitting the scheduled transmissions is allocated among the plurality of uplink carriers based on a serving grant and a corresponding DPCCH power associated with each of the plurality of uplink carriers. 
     
     
         34 . The method of  claim 30 , wherein the plurality of uplink carriers comprises one or more secondary carriers, and the scheduled transmissions are transmitted on the primary carrier and each of the one or more secondary carriers using the available power allocated for transmitting the scheduled transmissions. 
     
     
         35 . The method of  claim 29 , wherein the plurality of uplink carriers includes an E-DCH. 
     
     
         36 . The method of  claim 29 , wherein the power for transmitting the one or more non-scheduled MAC-d flows is a sum of the power used to transmit available data associated with each of the one or more non-scheduled MAC-d flows up to a payload of a non-scheduled grant for the each of the one or more non-scheduled MAC-d flows. 
     
     
         37 . The method of  claim 36 , wherein the non-scheduled grant for the each of the one or more non-scheduled MAC-d flows is received from a wireless communication network. 
     
     
         38 . A wireless transmit/receive unit (WTRU), the WTRU comprising:
 a processor configured to:
 determine that the WTRU is configured with a plurality of uplink carriers including a primary carrier; 
 determine a power for transmitting one or more non-scheduled MAC-d flows; 
 allocate the power for transmitting the one or more non-scheduled MAC-d flows to the primary carrier; and 
 transmit the one or more non-scheduled MAC-d flows on the primary carrier. 
   
     
     
         39 . The WTRU of  claim 38 , wherein the processor is configured to:
 determine an available power for transmitting scheduled transmissions on the plurality of uplink carriers; and   allocate the available power for transmitting the scheduled transmissions among the plurality of uplink carriers.   
     
     
         40 . The WTRU of  claim 39 , wherein the processor is configured to:
 determine the available power for transmitting the scheduled transmissions by subtracting, from a maximum WTRU transmit power, a sum of power associated with a dedicated physical control channel (DPCCH) for the plurality of uplink carriers, a power associated with a high speed dedicated physical control channel (HS-DPCCH), and the power for transmitting the one or more non-scheduled MAC-d flows.   
     
     
         41 . The WTRU of  claim 40 , wherein the processor is further configured to determine the available power for transmitting the scheduled transmissions based on a power associated with an enhanced dedicated channel (E-DCH) DPCCH (E-DPCCH). 
     
     
         42 . The WTRU of  claim 39 , wherein the processor is configured to allocate the available power for transmitting the scheduled transmissions among the plurality of uplink carriers based on a serving grant and a corresponding DPCCH power associated with each of the plurality of uplink carriers. 
     
     
         43 . The WTRU of  claim 39 , wherein the plurality of uplink carriers comprises one or more secondary carriers, and the scheduled transmissions are transmitted on the primary carrier and each of the one or more secondary carriers using the available power allocated for transmitting the scheduled transmissions. 
     
     
         44 . The WTRU of  claim 38 , wherein the plurality of uplink carriers include an E-DCH. 
     
     
         45 . The WTRU of  claim 38 , wherein the power for transmitting the one or more non-scheduled MAC-d flows is a sum of the power used to transmit available data associated with each of the one or more non-scheduled MAC-d flows up to a payload of a non-scheduled grant for the each of the one or more non-scheduled MAC-d flows. 
     
     
         46 . The WTRU of  claim 45 , wherein the non-scheduled grant for the each of the one or more non-scheduled MAC-d flows is received from a wireless communication network.