Re-establishing a direct tunnel between an access node and a gateway router

摘要

To re-establish a direct tunnel between an access node and a gateway router in a wireless network, a control node that provides mobility management on behalf of mobile stations detects restart of the gateway router. In response to detecting restart of the gateway router, the control node sends context information regarding a previously established direct tunnel to the gateway router to enable the gateway router to re-establish the direct tunnel.

主权项

1. A method of reestablishing one or more direct tunnels between an access node and a gateway router in a wireless network, comprising:
a control node performing,
establishing the one or more direct tunnels between the access node and the gateway router, wherein the one or more direct tunnels bypass the control node;in response to a failure of the gateway router, sending context information regarding the previously established one or more direct tunnels to the gateway router to enable re-establishment of the one or more direct tunnels; andcontrolling the rate of the sending of context information regarding the previously established one or more direct tunnels to avoid overloading the gateway router; wherein the control node comprises one of a serving GPRS support node (SGSN) and mobility management entity (MME), and the gateway router comprises one of a gateway GPRS support node (GGSN) and serving gateway.