Method and apparatus for control of common control channel transmission over common enhanced dedicated channel resources in cell_fach state

Abstract

A method and apparatus provide for the control. of wireless communication. signals over an enhanced dedicated channel (E-DCH) resource while operating in the CELL_FACH state with an allocated E-DCH radio network temporary identifier (E-RNTI). A determination is made that a periodic cell update timer is expired. In response to the periodic cell update timer expiring, a determination is made whether the WTRU has an allocated E-DCH resource. If the WTRU has an allocated E-DCH resource, the periodic cell update timer is re-started without performing a periodic cell update.

What is claimed: 
     
         1 . A method for a control channel transmission by a wireless transmit/receive unit (WTRU), the method comprising:
 operating with a common enhanced dedicated channel (E-DCH) resource and on-going common control channel (CCCH) traffic;   determining that dedicated control channel (DCCH)/ dedicated traffic channel (DTCH) data is available for transmission; and   waiting until the CCCH resource is released before transmitting DCCH/DTCH traffic.   
     
     
         2 . The method of  claim 1 , wherein the CCCH resource is released when the WTRU no longer has CCCH traffic. 
     
     
         3 . The method of  claim 2 , wherein the WTRU no longer has CCCH traffic when a CCCH buffer status is empty. 
     
     
         4 . The method of  claim 1 , further comprising initiating an access procedure. 
     
     
         5 . The method of  claim 4 , wherein the access procedure is initiated when the CCCH resource is released. 
     
     
         6 . The method of  claim 5 , wherein the access procedure is initiated by a medium access control (MAC). 
     
     
         7 . The method of  claim 1 , wherein the waiting is performed by a medium access control (MAC). 
     
     
         8 . The method of  claim 1 , further comprising:
 determining that the WTRU no longer has CCCH traffic; and setting a total E-DCH buffer status (TEBS) to zero.   
     
     
         9 . The method of  claim 8 , wherein the WTRU has DCCH/DTCH data in a. buffer. 
     
     
         10 . The method of  claim 1 , further comprising transmitting DCCH/DTCH traffic when the CCCH resource is released. 
     
     
         11 . A wireless transmit/receive unit (WTRU) comprising:
 a processor configured to:   operate with a. common enhanced dedicated channel (E-DCH) resource and on-going common control channel (CCM) traffic;   determine that dedicated control channel (DCCH)/ dedicated traffic channel. (DTCH) data is available for transmission; and   wait until the CCCH resource is released before transmitting DCCH/DTCH traffic.   
     
     
         12 . The WTRU of  claim 11 , wherein the CCCH resource is released when the WTRU no longer has CCCH traffic. 
     
     
         13 . The WTRU of  claim 12 , wherein the WTRU no longer has CCCH traffic when a CCCH buffer status is empty. 
     
     
         14 . The WTRU of  claim 11 , wherein the processor is further configured to initiate an access procedure. 
     
     
         15 . The WTRU of  claim 14 , wherein the access procedure is initiated when the CCCH resource is released. 
     
     
         16 . The WTRU of  claim 15 , wherein the access procedure is initiated by a medium access control (MAC). 
     
     
         17 . The WTRU of claim.  11 , wherein the waiting is performed by a medium access control (MAC). 
     
     
         18 . The WTRU of  claim 11 , wherein the processor is further configured to:
 determine that the WTRU no longer has CCCH traffic; and   set a total E-DCH buffer status (TEBS) to zero.   
     
     
         19 . The WTRU of  claim 18 , wherein the WTRU has DCCH/DTCH data in a buffer. 
     
     
         20 . The WTRU of  claim 11 , wherein the processor is further configured to transmit DCCH/DTCH traffic when. the CCCH resource is released.