Patent ID: 9538450
Date: 2017-01-03
CPC Classifications: H04W

Claim:
1. A method for path optimization in mobile relay node architecture, the method comprising: coordinating a first transfer of traffic flows from a first bearer path to a second bearer path, the first bearer path passing through both an initial donor enhanced base station (DeNB) and a source DeNB, and the second bearer path passing through both the initial DeNB and a target DeNB, wherein both the first bearer path and the second bearer path extend between a mobile relay node and a core network of a user equipment (UE), and the mobile relay node provides wireless access to the UE; coordinating relocation of a packet data network gateway (PGW) function of the mobile relay node from the initial DeNB to the target DeNB based on an internet protocol (IP) address of a PGW in the initial DeNB and an IP address of a PGW in the target DeNB, the relocation of the PGW function of the mobile relay node establishing a third bearer path extending between the core network and the mobile relay node, wherein the third bearer path passes through the target DeNB without passing through the initial DeNB and the source DeNB; and coordinating a second transfer of the traffic flows from the second bearer path to the third bearer path, wherein the first bearer path, the second bearer path and the third bearer path carry at least some data that is not control signaling.