Evaluating and reporting measurements for h(e)nb outbound mobility and inter-h(e)nb mobility in connected mode

Abstract

Systems, methods, and instrumentalities are disclosed that may provide for a WTRU to perform measurements in order to avoid radio link failure that may occur because the WTRU's neighboring cells are, or include, CSG cells. For example, thresholds may be implemented to compensate for the presence of CSG cells, a WTRU may make adjustments when performing measurements, etc.

What is claimed is: 
     
         1 . A method to determine signal quality relating to a handover from a first frequency, the method comprising:
 measuring a quality associated with a CSG cell on a non-used frequency; and   updating, by a wireless transmit/receive unit (WTRU), a CSG virtual active set to have a single CSG cell associated with the non-used frequency.   
     
     
         2 . The method of  claim 1 , wherein the CSG cell has a PSC in a network signaled PSC CSG range. 
     
     
         3 . The method of  claim 1 , wherein the single CSG cell is a best cell in a PSC CSG range. 
     
     
         4 . The method of  claim 1 , further comprising determining a proximity to the CSG cell. 
     
     
         5 . The method of  claim 4 , wherein the CSG cell is part of a whitelist. 
     
     
         6 . The method of  claim 4 , further comprising sending a message indicating the proximity. 
     
     
         7 . The method of  claim 1 , further comprising:
 determining that a first frequency quality falls below a first threshold; and   triggering an event indicating that a measurement needs to be taken.   
     
     
         8 . The method of  claim 1 , wherein the indication is received from a network, and wherein the indication is in response to the network determining that a measurement is necessary without reference to information from a measuring device. 
     
     
         9 . The method of  claim 1 , further comprising receiving an indication to take a CSG measurement associated with a non-used frequency. 
     
     
         10 . A wireless transmit/receive unit (WTRU) comprising:
 a processor configured to:   measure a quality associated with a CSG cell on a non-used frequency; and   update a CSG virtual active set to have a single CSG cell associated with the non-used frequency, wherein the single CSG cell is a best CSG cell associated with the non-used frequency.   
     
     
         11 . The WTRU of  claim 10 , wherein the CSG cell has a PSC in a network signaled PSC CSG range. 
     
     
         12 . The WTRU of  claim 10 , wherein the single CSG cell is a best cell in a PSC CSG range. 
     
     
         13 . The WTRU of  claim 10 , wherein the processor is further configured to determine a proximity to the CSG cell. 
     
     
         14 . The WTRU of  claim 13 , wherein the CSG cell is part of a whitelist. 
     
     
         15 . The WTRU of  claim 13 , wherein the processor is further configured to send a message indicating the proximity. 
     
     
         16 . The WTRU of  claim 10 , wherein the processor is further configured to:
 determine that a first frequency quality falls below a first threshold; and   trigger an event indicating that a measurement needs to be taken.   
     
     
         17 . The WTRU of  claim 10 , wherein the indication is received from a network, and wherein the indication is in response to the network determining that a measurement is necessary without reference to information from a measuring device. 
     
     
         18 . The WTRU of  claim 10 , wherein the processor is further configured to receive an indication to take a CSG measurement associated with a non-used frequency.