Method of handling location service and related communication device

• US 8,676,226 B2
• Filed: 07/08/2010
• Issued: 03/18/2014
• Est. Priority Date: 07/09/2009
• Status: Active Grant

• Current Assignee: HTC Corporation
• Original Assignee: HTC Corporation
• Inventors: Wu, Chih-Hsiang
• Primary Examiner(s): LE, DANH C
• Application Number:
  US12/832,081
• Publication Number:
  US 20110009130A1
• Time in Patent Office: 1,349 Days
• Field of Search: 455/456.1, 455/552.1, 455/456.6, 370/352
• US Class Current: 455/456.1
• CPC Class Codes: H04W 36/0066 of control information between different types of networks in order to establish a new radio link in the target network
• CPC Class Codes: H04W 60/00 Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
• CPC Class Codes: H04W 64/00 Locating users or terminals or network equipment for network management purposes, e.g. mobility management
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

A method of handling location service for a mobile device compatible with a plurality of radio access technologies (RATs) in a wireless communication system is disclosed. The method comprises utilizing a first RAT of the plurality of RATs to communicate with a network of the wireless communication system, receiving a first message including positioning support information of the network from the network, and determining whether to initiate a location service in the first RAT or in a second RAT of the plurality of RATs according to the positioning support information.

Claims

1. A method of handling location service for a mobile device compatible with a plurality of radio access technologies (RATs) in a wireless communication system, the method comprising:

utilizing a first RAT of the plurality of RATs to communicate with a network of the wireless communication system;

receiving a first message including positioning support information of the network, from the network, wherein the positioning support information indicates whether positioning is supported in the first RAT;

initiating a location service in the first RAT when the positioning support information indicates that positioning is supported in the first RAT; and

initiating the location service in a second RAT of the plurality of RATs when the positioning support information indicates that positioning is not supported in the first RAT.

2. The method of claim 1, wherein initiating the location service in the second RAT when the positioning support information indicates that positioning is not supported comprises:

initiating a circuit switched (CS) fallback procedure for entering the second RAT from the first RAT; and

initiating the location service in the second RAT.

3. The method of claim 1, wherein the first message is an RRC message or an NAS message.

4. The method of claim 3, wherein the RRC message is a broadcast control channel (BCCH) message or a dedicated message.

5. The method of claim 3, wherein the NAS message is an ATTAH ACCEPT message, a location area update (LAU) ACCEPT message, a routing area update (RAU) ACCEPT message or a tracking area update (TAU) ACCEPT message.

6. A mobile device compatible with a plurality of radio access technologies (RATs) of a wireless communication system for handling location service, the mobile device comprising:

means for utilizing a first RAT of the plurality of RATs to communicate with a network of the wireless communication system;

means for receiving a first message including positioning support information of the network, from the network, wherein the positioning support information indicates whether positioning is supported in the first RAT;

means for initiating a location service in the first RAT when the positioning support information indicates that positioning is supported in the first RAT; and

means for initiating the location service in a second RAT of the plurality of RATs when the positioning support information indicates that positioning is not supported in the first RAT.

7. The mobile device of claim 6, wherein the means for initiating the location service in the second RAT when the positioning support information indicates that positioning is not supported comprises:

means for initiating a circuit switched (CS) fallback procedure for entering the second RAT from the first RAT; and

means for initiating the location service in the second RAT.

8. The mobile device of claim 6, further comprising:

means for transmitting a second message to request the network for the positioning support information.

9. The mobile device of claim 6, wherein the positioning support information includes at least one of information of an evolved serving mobile location centre (E-SMLC) capability, a supported positioning method, a supported location service.

10. The mobile device of claim 6, wherein the first message is an RRC message or an NAS message.

11. The mobile device of claim 10, wherein the RRC message is a broadcast control channel (BCCH) message or a dedicated message.

12. The mobile device of claim 10, wherein the NAS message is an ATTAH ACCEPT message, a location area update (LAU) ACCEPT message, a routing area update (RAU) ACCEPT message or a tracking area update (TAU) ACCEPT message.