Method and apparatus for local call routing for home evolved node-b

Abstract

The method and apparatus are provided for local call routing for a home Node-B (HNB) and a home evolved Node-B (H(e)NB) using a local authentication, authorization, and accounting (AAA) server and a local private branch exchange (PBX) server without assistance from the core network. A H(e)NB including a receiver for receiving a call setup request that includes an identity (ID) of a target wireless transmit/receive unit (WTRU), and a processor for determining whether the call setup request can be routed locally by comparing the ID of the target WTRU with a list of current members of the closed subscriber group (CSG), and on a condition that the determination is positive, forwarding the call set up request to a local private branch exchange (PBX) server, is described.

What is claimed is: 
     
         1 . A wireless transmit/receiver unit (WTRU), in communication with a home evolved node B (H(e)NB), and the WTRU that is a member of a closed subscriber group (CSG), the WTRU comprising:
 a transmitter configured to transmit a call setup request to the H(e)NB, wherein the call setup request includes an identity (ID) of the target WTRU and the ID of the WTRU, wherein the target WTRU is a member of the CSG; and   a receiver configured to receive a channel allocation from a local branch exchange (PBX) server via the H(e)NB.   
     
     
         2 . A Home eNode B (H(e)NB) comprising:
 a receiver configured to receive a call setup request that includes an identity (ID) of a target wireless transmit/receive unit (WTRU); and   a processor configured to determine whether the call setup request can be routed locally by comparing the ID of the target WTRU with a list of current members of the closed subscriber group (CSG), and on a condition that the determination is positive, forward the call set up request to a local private branch exchange (PBX) server.   
     
     
         3 . The H(e)NB as in  claim 2  wherein the receiver is configured to receive a paging and alerting message from the local PBX server, the message including the ID of the target WTRU and the ID of the source WTRU. 
     
     
         4 . The H(e)NB as in  claim 3  wherein the processor is configured to forward a paging and alerting message to the source WTRU, the message including the ID of the target WTRU and the ID of the source WTRU. 
     
     
         5 . The H(e)NB as in  claim 4  wherein the receiver is configured to receive a paging response from the target WTRU. 
     
     
         6 . The H(e)NB as in  claim 5  wherein the processor is configured to forward a paging response to the local PBX server. 
     
     
         7 . The H(e)NB as in  claim 6  wherein the processor is configured to establish the call request connection. 
     
     
         8 . The H(e)NB as in  claim 2 , wherein on a condition that the processor is further configured to determine that the call setup request can not be routed, a network is configured to establish a connection between the source WTRU and the target WTRU. 
     
     
         9 . A method implemented in a Home eNode B (H(e)NB), the method comprising:
 receiving a call setup request that includes an identity (ID) of a target wireless transmit/receive unit (WTRU); and   determining whether the call setup request can be routed locally by comparing the ID of the target WTRU with a list of current members of the closed subscriber group (CSG), and on a condition that the determination is positive, forwarding the call set up request to a local private branch exchange (PBX) server.   
     
     
         10 . The method as in  claim 9 , further comprising:
 receiving a paging and alerting message from the local PBX server, the message including the ID of the target WTRU and the ID of the source WTRU.   
     
     
         11 . The method as in  claim 10 , further comprising:
 forwarding a paging and alerting message to source WTRU, wherein the message includes the ID of the target WTRU and the ID of the source WTRU.   
     
     
         12 . The method as in  claim 11  wherein a paging response is received from the target WTRU. 
     
     
         13 . The method as in  claim 12  wherein a paging response is forwarded to the local PBX server. 
     
     
         14 . The method as in  claim 13  wherein a call request connection is established. 
     
     
         15 . The method as in  claim 9 , wherein on a condition that the processor is further configured to determine that the call setup request can not be routed, establishing a connection between the source WTRU and the target WTRU at a network.