Patent ID: 9258182
Filing Date: 2016-02-09
CPC Classification: H04L,H04W

Claim Text:
1. A packet data network gateway, P-GW, located in a second network for supporting control plane data in a wireless communications system that additionally comprises a first network having a first P-GW operably couplable to the P-GW, and a serving gateway, S-GW; the P-GW comprising a processor arranged to: monitor and build terminal device context information for a plurality of terminal devices being served with user plane data by a backhaul link of the second network; and determine an operational status of at least one of: the backhaul link, the first P-GW, wherein, in response to the processor determining that at least one of: the backhaul link, the first P-GW, is unavailable, the processor is arranged to perform at least one of: