| 摘要 |
A radio access network and method to solve addressing issues associated particularly with handover from a macrolayer to an underlayer of access point cells, where limited address space may result in a non-unique address for the target access point on the network. A radio access network comprises an access point 111 accessed by a first mobile node 117 and having an access point (network) address, an access proxy 115 for the access point 111 which has an access proxy network address; and a registration server 119, coupled to the access proxy 115 and the access point 111, which registers the first mobile node 117 for the access point 111 in response to receiving a registration message for the first mobile node 117. The registration comprises an identification check of a subscription identity of the first mobile node 117 and in response to the registration, a first address binding is generated between the access point (network) address, the subscription identity and the access proxy network address, preferably by the access proxy 115. Thus, the mobile node 117 registers with the first access point 111 and detects the shared address of the access proxy 115 (e.g. the shared pilot signal scrambling code). A handover request for the mobile node 117 is then addressed to the access proxy 115 which forwards it to the correct access point 111 by reference to the binding information. The handover request may include the mobile node's subscription identity which the access proxy 115 uses to determiine the access point 111 or it may include an indication of the mobile node's location which can be compared to those of access points for which the proxy has a binding address. |
