Home Nodeb (HNB) Mobility In A Cell Forward Access Channel (Cell_Fach) State

Abstract

Disclosed herein are systems and methods for managing home nodeB (HNB) mobility in forward access channel (Cell_FACH) states. According to an aspect, a method may be implemented at a Wireless Transmit/Receive Unit (WTRU). The method may include determining whether to communicate an indication to a network node for extended measurement occasion. Further, the method may include communicating the indication to the network node in response to determining to communicate the indication.

1 - 20 . (canceled) 
     
     
         21 . A method for enabling mobility of a wireless transmit/receive unit (WTRU) from a network node during a cell forward access channel (CELL_FACH) state, the method comprising:
 sending high speed downlink shared channel (HS-DSCH) traffic from a source cell configured for a first frequency;   sending, from the network node, a forward access channel (FACH) measurement occasion or a discontinuous reception (DRX) length for performing measurements on target cells;   sending, from the network node, an extended FACH measurement occasion or an extended DRX length for enabling the WTRU to perform inter-frequency measurements on closed subscriber group (CSG) target cells or hybrid target cells, wherein the extended FACH measurement occasion or the extended DRX length for performing the inter-frequency measurements on the CSG target cells or the hybrid target cells is greater than the FACH measurement occasion or the DRX length for performing the measurements on the target cells;   when the WTRU is within a proximity to a target cell, stopping the sending of the HS-DSCH traffic from the source cell for a period of the FACH measurement occasion or the DRX length to enable the WTRU to perform the measurements on the target cell; and   when the WTRU is within a proximity to the CSG target cell or the hybrid target cell configured for a second frequency while in the CELL_FACH state, stopping the sending of the HS-DSCH traffic from the source cell for a period of the extended FACH measurement occasion or the extended DRX length to enable the WTRU to perform the inter-frequency measurements on the CSG target cell or the hybrid target cell.   
     
     
         22 . The method of  claim 21 , further comprising:
 receiving a request from the WTRU for the extended FACH measurement occasion or the extended DRX length; and   sending the extended FACH measurement occasion or the extended DRX length in response to the request.   
     
     
         23 . The method of  claim 22 , wherein the extended FACH measurement occasion or the extended DRX length is sent to the WTRU when the proximity of the WTRU to the CSG target cell or the hybrid target cell is within a predetermined threshold. 
     
     
         24 . The method of  claim 22 , wherein the request is received via radio resource control (RRC) messaging. 
     
     
         25 . The method of  claim 22 , wherein the request is received via a cell update message. 
     
     
         26 . The method of  claim 22 , wherein the extended FACH measurement occasion or the extended DRX length are sent in an acknowledgment message from the network node for acknowledging receipt of the request for the extended FACH measurement occasion or the extended DRX length. 
     
     
         27 . The method of  claim 21 , wherein the extended FACH measurement occasion or the extended DRX length is configured to enable the WTRU to read a system information block (SIB) associated with the CSG target cell or the hybrid target cell. 
     
     
         28 . The method of  claim 21 , further comprising sending an indication to the WTRU that the network node will prevent transmission of the HS-DSCH traffic to the WTRU during the extended FACH measurement occasion or the extended DRX length. 
     
     
         29 . The method of  claim 21 , wherein the extended FACH measurement occasion or the extended DRX length comprises a multiple of the FACH measurement occasion or the DRX length. 
     
     
         30 . A network node comprising:
 a transceiver; and   a processor configured to:   send, via the transceiver, high speed downlink shared channel (HS-DSCH) traffic on a first frequency;   send, to a wireless transmit/receive unit (WTRU) via the transceiver, a forward access channel (FACH) measurement occasion or a discontinuous reception (DRX) length for performing measurement on target cells; and   send, to the WTRU via the transceiver, an extended FACH measurement occasion or an extended DRX length for performing inter-frequency measurements on closed subscriber group (CSG) target cells or hybrid target cells, wherein the extended FACH measurement occasion or the extended DRX length for performing the inter-frequency measurements on the CSG target cells or the hybrid target cells is greater than the FACH measurement occasion or the DRX length for being performed on the target cells;   when the WTRU is within a proximity to a target cell, stop the HS-DSCH traffic from being sent to the WTRU for a period of the FACH measurement occasion or the DRX length to enable the WTRU to perform the measurements on the target cell; and   when the WTRU is within a proximity to the CSG target cell or the hybrid target cell while in the CELL_FACH state, stop the HS-DSCH traffic from being sent to the WTRU for a period of the extended FACH measurement occasion or the extended DRX length to enable the WTRU to perform the inter-frequency measurements on the CSG target cell or the hybrid target cell.   
     
     
         31 . The network node of  claim 30 , wherein the extended FACH measurement occasion or the extended DRX length is configured to enable the WTRU to read a system information block (SIB) associated with the CSG target cell or the hybrid target cell. 
     
     
         32 . The network node of  claim 30 , wherein the processor is further configured to send an indication to the WTRU that the network node will prevent transmission of the HS-DSCH traffic to the WTRU during the extended FACH measurement occasion or the extended DRX length. 
     
     
         33 . The network node of  claim 30 , wherein the extended FACH measurement occasion or the extended DRX length comprises a multiple of the FACH measurement occasion or the DRX length. 
     
     
         34 . The network node of  claim 30 , wherein the processor is configured to:
 receive, via the transceiver, a request from the WTRU for the extended FACH measurement occasion or the extended DRX length; and   send the extended FACH measurement occasion or the extended DRX length in response to the request.   
     
     
         35 . The network node of  claim 34 , wherein the processor is configured to receive the request from the WTRU when the proximity of the WTRU to the CSG target cell or hybrid target cell is within a predetermined threshold. 
     
     
         36 . The network node of  claim 34 , wherein the processor is configured to receive the request via radio resource control (RRC) messaging. 
     
     
         37 . The network node of  claim 34 , wherein the processor is configured to receive the request via a cell update message. 
     
     
         38 . The network node of  claim 34 , wherein the processor is configured to send, via the transceiver, the extended FACH measurement occasion or the extended DRX length in an acknowledgment message to the WTRU for acknowledging receipt of the request for the extended FACH measurement occasion or the extended DRX length.