# US 6,725,038 B1 · Method and apparatus for speeding up AAL2 connection setup during handover in advanced cellular networks > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 6,725,038 B1 - Document ID: US6725038B1 - Status: Granted - Kind: B1 - Application number: 09/237,728 - Filed: 1999-01-26 - Granted: 2004-04-20 - Earliest claimed: 1999-01-26 - Assignees: Nokia Corporation - Inventors: Baranitharan Subbiah - Web page: https://patentgrep.com/patent/US6725038B1 ## CPC - H04W 36/10: Reselecting an access point controller - H04W 36/26: by agreed or negotiated communication parameters - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A method and apparatus for speeding up AAL2 connection setup during handover in advanced cellular networks. Connection parameters for the current AAL2 connection are bundled and transferred in a single message to be used setting up a new AAL2 connection in the coverage area. The method includes requesting a new AAL2 connection from a destination access network to a remote AAL2 peer by a serving access network, initiating an AAL2 connection setup by the destination access network upon receiving a handover request from a serving access network, bundling AAL2 connection parameters associated with an old AAL2 connection by the serving access network, transferring the bundled AAL2 connection parameters to the destination access network and establishing a new AAL2 connection to the remote AAL2 peer connection by the destination access network using the transferred AAL2 connection parameters. The transferring comprises encapsulating the AAL2 connection parameters within Radio Network System Application Part signaling. The serving access network may be a Base Station or a radio network controller. The destination access network may be a Base Station or a radio network controller. ## Claims ### Claim 1 A method for establishing a connection during a handover in a cellular access network, comprising: requesting a new connection from a destination access network to a remote peer by a mobile terminal; initiating a connection setup by the destination access network upon receiving a handover request from a serving access network; bundling connection parameters associated with an old connection by the serving access network; transferring the bundled connection parameters to the destination access network; and establishing a new connection to the remote peer connection by the destination access network using the transferred connection parameters. ### Claim 2 (depends on 1) The method of claim 1 wherein the bundled connection parameters is selected from the group comprising peak packet rate, burst tolerance, quality-of-service, codec selection, and maximum packet size. ### Claim 3 (depends on 1) The method of claim 1 wherein the transferring comprises encapsulating the connection parameters within the signaling messages used between the serving access network and the destination access network. ### Claim 4 (depends on 1) The method of claim 1 further comprising clearing the old connection. ### Claim 5 (depends on 1) The method of claim 1 further comprising: sending a connection success signal from the destination access network to the serving access network; clearing the old connection; sending a confirm signal from the serving access network to the destination access network. ### Claim 6 (depends on 1) The method of claim 1 wherein the serving access network is a Base Station. ### Claim 7 (depends on 1) The method of claim 1 wherein the destination access network is a Base Station. ### Claim 8 (depends on 1) The method of claim 1 wherein the serving access network is a radio network controller. ### Claim 9 (depends on 1) The method of claim 1 wherein the destination access network is a radio network controller. ### Claim 10 A radio access network, comprising: an access network serving the a mobile terminal with a first connection from a Base Station to a remote peer entity; a destination access network receiving a handover request from the serving access network; wherein a connection setup is initiated by the destination access network upon receiving a handover request from a serving access network, and the serving access network bundling connection parameters associated with the existing connection by the serving access network and transferring the bundled connection parameters to the destination access network to establish a new connection to the remote peer connection by the destination access network using the transferred connection parameters. ### Claim 11 (depends on 10) The radio access network of claim 10 wherein the bundled connection parameters is selected from the group comprising peak packet rate, burst tolerance, quality-of-service, codec selection, and maximum packet size. ### Claim 12 (depends on 10) The radio access network of claim 10 wherein the connection parameters are encapsulated by the serving access network within signaling messages used between the serving access network and the destination access network. ### Claim 13 (depends on 10) The radio access network of claim 10 wherein the serving access network clears the first connection. ### Claim 14 (depends on 10) The radio access network of claim 10 wherein the destination access network sends a connection success signal from the destination access network to the serving access network and, in response to the connection success signal, the serving access network clears the first connection and sends a confirm signal to the destination access network. ### Claim 15 (depends on 10) The radio access network of claim 10 wherein the serving access network is a Base Station. ### Claim 16 (depends on 10) The radio access network of claim 10 wherein the destination access network is a Base Station. ### Claim 17 (depends on 10) The radio access network of claim 10 wherein the serving access network is a radio network controller. ### Claim 18 (depends on 10) The radio access network of claim 10 wherein the destination access network radio is a network controller.