Patent ID: 9445256
Filing Date: 2016-09-13
CPC Classification: H04L,H04W

Claim Text:
1. A method comprising: receiving, by a first home packet gateway (PGW) device, a binding update message on behalf of a wireless communication device (WCD), wherein the first home PGW device is associated with a first pool of Internet Protocol (IP) addresses from which the first home PGW device assigns IP addresses to WCDs served by the first home PGW device, and wherein the WCD is assigned a particular IP address; in response to receiving the binding update message, determining that the first pool of IP addresses does not include the particular IP address; in response to determining that the first pool of IP addresses does not include the particular IP address, determining that the particular IP address is included in a second pool of IP addresses that is associated with a second home PGW device, wherein the second home PGW device assigns IP addresses from the second pool of IP addresses to WCDs served by the second home PGW device; and in response to determining that the particular IP address is included in the second pool of IP addresses that is associated with the second home PGW device, forwarding, by the first home PGW device, the binding update message to the second home PGW device.