US 8,620,317 B2Granted

Method and apparatus for communicating network features during a routing area update procedure

AssigneeHTC Corporation

InventorKundan Tiwari

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Abstract

A method and system facilitates communicating network feature support between a mobile device and cellular network. The system protects network feature support information from tampering or spoofing during a periodic routing area update (RAU). In some cases, the network is prohibited from transmitting network feature support information in response to a periodic RAU. Instead, the mobile device may use previously provided network feature support information. In other cases, the network establishes integrity protection before transmitting network feature support information in response to a periodic RAU. The mobile device rejects responses that do not comply. If the mobile device rejects the response, it may also use previously provided network feature support information instead.

Claims23

Dependent claims

A method for communicating network features during a routing area update procedure, the method comprising:

receiving a routing area update request message by a cellular network from a mobile device,
wherein the routing area update request message includes information relating to a location of a mobile device for receiving communications from the cellular network;
determining, by the cellular network, whether the routing area update message is a periodic message generated at least in part based on an elapsed time following a previous routing area update by the mobile device,
in response to determining by the cellular network that the routing area update request message is a periodic message and that the network is required to send a network feature support information element due to a change in supported features, communicating from the cellular network with the mobile device to set up an integrity protection relationship;
and
transmitting, by the cellular network, a routing area update accept message to the mobile device in response to the routing area update request message,
wherein the routing area update accept message includes the network feature support information element specifying one or more features associated with the cellular network, and
wherein the routing area update accept message is sent via the integrity protection relationship.

5 more elements

A method for communicating network features during a routing area update procedure, the method comprising:

transmitting a routing area update request message to a cellular network,
wherein the routing area update message is a message generated based at least in part on an elapsed time following a previous routing area update, and
wherein the routing area update message includes information relating to a location of a mobile device for receiving communications from the cellular network;
communicating with the cellular network to establish an integrity protection relationship,
wherein the communicating with the cellular network is performed in response to the cellular network determining that the routing area update request message is a periodic message and that the network is required to send a network feature support information element due to a change in supported network features;
and
receiving a routing area update accept message from the cellular network in response to the routing area update request message,
wherein the routing area update accept message includes the network feature support information element specifying one or more features associated with the cellular network, and
wherein the routing area update accept message is sent via the integrity protection relationship.

6 more elements

A non-transitory computer-readable storage medium containing instructions for communicating network features during a routing area update procedure, by a method comprising:

transmitting a routing area update request message to a cellular network,
wherein the routing area update message is a message generated based at least in part on an elapsed time following a previous routing area update, and
wherein the routing area update message includes information relating to a location of a mobile device for receiving communications from the cellular network;
communicating with the cellular network to establish an integrity protection relationship,
wherein the communicating with the cellular network is performed in response to the cellular network determining that the routing area update request message is a periodic message and that the network is required to send a network feature support information element due to a change in supported network features;
and
receiving a routing area update accept message from the cellular network in response to the routing area update request message,
wherein the routing area update accept message includes the network feature support information element specifying one or more features associated with the cellular network, and
wherein the routing area update accept message is sent via the integrity protection relationship.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/396,241Filed 14 Feb 2012 · us provisional application
Priority: 16 Feb 2011
Published: US 2012/0208487 A116 Aug 2012
Granted: 31 Dec 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H04W 60/02
Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration: by periodical registration
H04L 63/123
Applying verification of the received information: received data contents, e.g. message integrity
H04W 12/106
Integrity: packet or message integrity
H04W 60/04
Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration: using triggered events