Method, system and device for location update in networks

A network entity, comprising:

• a mechanism configured to:
• inform, when a function is relocated to said network entity, another entity of an access service network (ASN) on a location of the relocated function, where said function is relocated to said another entity due to a handover procedure, said handover is a connectivity service network anchored handover, and the function that is relocated during a handover is an anchor data path function;
• to inform said another entity, or an authenticator function included in the another entity, on the location of said relocated anchor data path function;
• to inform an authenticator or a gateway (ASN GW) in which the authenticator is located, on the actual location of an anchor data path function after successful completion of a handover;
• to send, by the target data path function or another component of said network entity, a context report message where said report message contains the address of said anchor data path function;
• and
• to obtain, by said network entity where the function relocated, a confirmation of said report message by receiving a context acknowledgment message from said another 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 bit or parameters of said report message or context purpose indicator indicating an anchor data path function DFP address update;
• and
• setting this indicating bit request 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.

A network entity, comprising:

• a mechanism configured:
• to receive, when a function is relocated to another entity, a message from said another entity on a location of the relocated function, where said function that is relocated during a handover is an anchor data path function,
• to provide an authenticator function;
• to inform said authenticator function on the location of the relocated anchor data path function;
• to update said authenticator or authenticator function with the actual location of said anchor data path function after a connectivity service network anchored handover;
• to update, upon receipt of a report message containing an address of said anchor data path function, by said authenticator the location or address or identifier of said anchor data path function for a mobile station (MS);
• and
• to confirm, by said authenticator, the receipt of said report message by sending an acknowledgment message, to the gateway or the target data path function of said another entity,
• wherein
• said 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 or parameters of said report messages or context purpose indicator indicating an anchor data path function DPF address update;
• and
• setting this indicating bit request 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.

A non-transitory computer readable storage for controlling a computer comprising a computer program product comprising program codes adapted to carry out functions when run on the computer, the functions 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 or parameters of said report message or context 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.