Patent ID: 9379962
Filing Date: 2016-06-28
CPC Classification: H04L

Claim Text:
1. A first node for a mobile network, comprising a memory and a processor coupled to the memory, the memory comprising executable instructions that when executed by the processor results in the first node being arranged to forward control plane signaling to and from an end user to other nodes and also being arranged to keep track of a state of the end user, the first node being arranged to use a Virtual Router Redundancy Protocol (VRRP) to monitor the function of a peer node and to have its own function be monitored by a VRRP of the peer node, the first node being also arranged to use a second protocol for transferring information on a state of the end user to the peer node, wherein the first node is a first Serving Gateway (SGW), the peer node is a second SGW, the first SGW is arranged to receive from a mobility management node (MMN) a Create Session Request message, the first SGW is further arranged such that, in response to receiving the Create Session Request message from the MMN, the first SGW sends a session request message to a Packet Data Network Gateway (PDN GW), which is configured to send a session response message to the first SGW, and the first SGW is further arranged such that in response to receiving from the PDN GW the session response message, the first SGW forwards to the second SGW said Create Session Request message received from the MMN and sends to the MMN a Create Session Response message.