Patent ID: 8543131
Filing Date: 2013-09-24
Classification: H04W

Abstract:
1. A method, comprising: relocating a function in a network from a first entity of an access service network (ASN) to a second entity of said access service network (ASN), where said function is relocated to said second entity due to a handover procedure, said function is an anchor data path function, and said handover is a connectivity service network anchored handover; informing a third entity by said second entity of a location of said relocated function when said function is relocated from said first entity of said access service network (ASN) to said second entity of said access service network (ASN); sending, by said second entity, a context report message to said third entity after a connectivity service network anchored handover is completed, where said report message contains an address of said anchor data path function; updating, by said third entity, the location or address or identifier of said anchor data path function for a mobile station (MS) upon receipt of said report message containing the address of said anchor data path function; and confirming, by said third entity, the receipt of said report message by sending a context acknowledgment message to said second entity, wherein said context report message includes one, two or more parameters among an anchor data path function identifier, and an address update indicator or parameter for the purpose of informing said authenticator of the Previously Presented location of said anchor data path function, and on the update request; the context purpose indicator may have a length of four octets, one of the bits of parameters of said report message of contest purpose indicator indicating an anchor data path function DPF address update; and setting this indicating bit requests that the receiver of said report message updates the address of said anchor data path function associated with said mobile station (MS) subject to handover, in a context table.