Method and apparatus for supporting home node b services

Abstract

A method and apparatus for supporting home Node B (HNB) services are disclosed. A wireless transmit/receive unit (WTRU) receives HNB access restriction information from an HNB and accesses the HNB if an access to the HNB is allowed based on the HNB access restriction information. The HNB access restriction information may be a closed subscriber group identity (CSG ID), a status bit indicating whether an HNB cell is available or not, an identity of WTRUs that are allowed to access the HNB, information indicating whether an access to a cell is barred or not. The WTRU may trigger measurements for cell reselection even though signal strength on a currently connected cell is above a threshold. The measurement may be triggered manually, periodically, under the instruction from the network, or based on a neighbor cell list including information about HNB cells located nearby.

1 - 72 . (canceled) 
     
     
         73 . A method comprising:
 a wireless transmit/receive unit (WTRU) receiving an indication from a Node B that a cell is restricted, wherein the indication is capable of being interpreted by the WTRU and other WTRUs;   the WTRU receiving a closed subscriber group (CSG) broadcast that indicates that the cell is reserved for a CSG, wherein the CSG broadcast is configured to be interpreted by the WTRU, and wherein the CSG broadcast is configured to be unable to be interpreted by the other WTRUs;   the WTRU interpreting the CSG broadcast; and   the WTRU ignoring the indication that the cell is restricted and trying to connect to the Node B based on the interpretation of the CSG broadcast that indicates that the cell is reserved for the CSG.   
     
     
         74 . The method of  claim 73 , further comprising the WTRU receiving a closed subscriber group identity (CSG ID), wherein the CSG ID is included in a system information block (SIB) broadcast by the Node B. 
     
     
         75 . The method of  claim 73 , wherein the CSG broadcast comprises a status bit indicating whether the cell is available or unavailable. 
     
     
         76 . The method of  claim 73 , wherein the WTRU supports HNB services, and wherein the other WTRUs fail to support HNB services. 
     
     
         77 . The method of  claim 76 , wherein the other WTRUs comprise legacy WTRUs. 
     
     
         78 . The method of  claim 77 , wherein the indication that the cell is restricted indicates that the legacy WTRUs are barred from accessing the cell. 
     
     
         79 . The method of  claim 77 , wherein the WTRU is a release 8 (R8) WTRU. 
     
     
         80 . The method of  claim 73 , wherein the indication that the cell is restricted comprises an access restriction indicating that the cell is barred, reserved for future extension, or reserved for operator use. 
     
     
         81 . A wireless transmit/receive unit (WTRU) comprising:
 a transceiver configured to transmit and receive signals; and   a controller configured to:
 receive, via the transceiver, an indication from a Node B that a cell is restricted, and wherein the indication is capable of being interpreted by the WTRU and other WTRUs, 
 receive, via the transceiver, a closed subscriber group (CSG) broadcast that indicates that the cell is reserved for a CSG, wherein the CSG broadcast is configured to be interpreted by the WTRU, and wherein the CSG broadcast is configured to be unable to be interpreted by the other WTRUs, 
 interpret the CSG broadcast, and 
 ignore the indication that the cell is restricted and try to connect to the Node B based on the interpretation of the CSG broadcast that indicates that the cell is reserved for the CSG. 
   
     
     
         82 . The WTRU of  claim 81 , wherein the controller is configured to receive, via the transceiver, a closed subscriber group identity (CSG ID), wherein the CSG ID is received in a system information block (SIB) broadcast by the Node B. 
     
     
         83 . The WTRU of  claim 81 , wherein the other WTRUs comprise legacy WTRUs. 
     
     
         84 . The WTRU of  claim 83 , wherein the indication that the cell is restricted indicates that the legacy WTRUs are barred from accessing the cell and that the legacy WTRUs are not allowed to use a frequency of the cell for future cell reselections. 
     
     
         85 . The WTRU of  claim 83 , wherein the WTRU is a release 8 (R8) WTRU. 
     
     
         86 . The WTRU of  claim 81 , wherein the CSG broadcast comprises a status bit indicating whether the cell is available or unavailable. 
     
     
         87 . The WTRU of  claim 81 , wherein the WTRU supports HNB services, and wherein the other WTRUs fail to support HNB services. 
     
     
         88 . The WTRU of  claim 81 , wherein the indication that the cell is restricted comprises an access restriction indicating that the cell is barred, reserved for future extension, or reserved for operator use. 
     
     
         89 . A method comprising:
 transmitting an indication from a Node B to one or more wireless transmit/receive units (WTRUs) that a cell is restricted;   transmitting a closed subscriber group (CSG) broadcast from the Node B, wherein the CSG broadcast is configured to be interpreted by at least one WTRU, and wherein the CSG broadcast is configured as being unable to be interpreted by other WTRUs;   receiving a connection request at the Node B from the at least one WTRU, which ignored the indication that the cell is restricted based on the CSG broadcast; and   allowing the at least one WTRU to camp on the cell in response to the connection request.   
     
     
         90 . The method of  claim 89 , further comprising the Node B transmitting a closed subscriber group identity (CSG ID), wherein the CSG ID is transmitted in a system information block (SIB) broadcast by the Node B. 
     
     
         91 . The method of  claim 89 , wherein the CSG broadcast comprises a status bit indicating whether the cell is available. 
     
     
         92 . The method of  claim 89 , wherein the other WTRUs do not support home Node B (HNB) features. 
     
     
         93 . The method of  claim 89 , wherein the other WTRUs comprise legacy WTRUs. 
     
     
         94 . The method of  claim 93 , wherein the indication indicates that the legacy WTRUs are barred from accessing the cell. 
     
     
         95 . The method of  claim 93 , wherein the at least one WTRU is a release 8 (R8) WTRU. 
     
     
         96 . The method of  claim 89 , wherein the CSG broadcast comprises an indication that WTRUs that support CSG features are allowed access to the cell. 
     
     
         97 . A Node B comprising:
 a transceiver configured to transmit and receive signals; and   a controller configured to:
 transmit, via the transceiver, an indication to one or more wireless transmit/receive units (WTRUs) that a cell is restricted, 
 transmit, via the transceiver, a closed subscriber group (CSG) broadcast, wherein the CSG broadcast is configured to be interpreted by at least one WTRU, and wherein the CSG broadcast is configured as being unable to be interpreted by other WTRUs, 
 receive a connection request from the at least one WTRU, which ignored the indication that the cell is restricted based on the CSG broadcast, and 
 allow the at least one WTRU to camp on the cell in response to the connection request. 
   
     
     
         98 . The Node B of  claim 97 , wherein the controller is further configured to transmit, via the transceiver, a closed subscriber group identity (CSG ID), wherein the controller is configured to broadcast the CSG ID in a system information block (SIB). 
     
     
         99 . The Node B of  claim 97 , wherein the CSG broadcast comprises a status bit indicating whether the cell is available. 
     
     
         100 . The Node B of  claim 97 , wherein the other WTRUs do not support home Node B (HNB) features. 
     
     
         101 . The Node B of  claim 97 , wherein the other WTRUs comprise legacy WTRUs. 
     
     
         102 . The Node B of  claim 101 , wherein the indication indicates that the legacy WTRUs are barred from accessing the cell. 
     
     
         103 . The Node B of  claim 101 , wherein the at least one WTRU is a release 8 (R8) WTRU. 
     
     
         104 . The Node B of  claim 97 , wherein the CSG broadcast comprises an indication that WTRUs that support CSG features are allowed access to the cell.