PROVIDING LOCATION BASED SERVICES FOR MOBILE DEVICES

• US 20080176582A1
• Filed: 12/07/2007
• Published: 07/24/2008
• Est. Priority Date: 12/07/2006
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: AGARWAL, Kaitki, GHAI, Rajat
• Granted Patent: US 8,213,913 B2
• Time in Patent Office: Days
• US Class Current: 455/456.2
• CPC Class Codes: H04L 45/38 Flow based routing
• CPC Class Codes: H04L 45/72 Routing based on the source address
• CPC Class Codes: H04L 45/74 Address processing for routing
• CPC Class Codes: H04L 45/7453 using hashing
• CPC Class Codes: H04L 47/125 by balancing the load, e.g. traffic engineering
• CPC Class Codes: H04L 47/2483 involving identification of individual flows
• CPC Class Codes: H04L 65/1016 IP multimedia subsystem [IMS]
• CPC Class Codes: H04L 65/102 Gateways arrangements for connecting between networks having differing types of switching systems, e.g. gateways, H04L12/66
• CPC Class Codes: H04L 65/103 in the network
• CPC Class Codes: H04L 65/1045 Proxies, e.g. for session initiation protocol [SIP]
• CPC Class Codes: H04L 65/1046 Call controllers; Call servers
• CPC Class Codes: H04L 65/1104 Session initiation protocol [SIP]
• CPC Class Codes: H04L 65/80 Responding to QoS
• CPC Class Codes: H04L 67/52 specially adapted for the location of the user terminal
• CPC Class Codes: H04W 4/02 Services making use of location information
• CPC Class Codes: Y10S 707/912 Applications of a database
• CPC Class Codes: Y10S 707/913 Multimedia
• CPC Class Codes: Y10S 707/918 Location

Abstract

Systems and methods are provided that allow the delivery of location based services within a communication network. The location information can be retrieved using information from the mobile node when the mobile node registers in the network. The location information can then be cached or stored in one or more places in the communication network and correlated with the mobile node'"'"'s addressing information. If a request for location based services is received without location based information, the gateway can use location based information regarding the mobile node to provide location based services. The gateway can enable non IMS mobile nodes to obtain IMS location based services or incompatible mobile nodes to obtain location based services.

Claims

1. A gateway that provides location-based information comprising:

a call session control function (CSCF) residing in the gateway and in communication with a cache;

the cache residing in a computer readable medium and storing addressing and location information for a mobile node;

the CSCF creating an entry in the cache when the mobile node registers;

the CSCF using registration information to obtain location information and storing the location information in the cache for the mobile node; and

the CSCF using location based information to obtain location based services on behalf of the mobile node.

2. The gateway of claim 1, wherein the location information stored in the cache is correlated with the addressing information.

3. The gateway of claim 1, further comprising the CSCF sending the location information to an external database for storage.

4. The gateway of claim 1, further comprising the CSCF routing a location based services request to an application server in the same visited network as the gateway.

5. A method of providing location based information comprising:

receiving a registration request at a call session control function (CSCF) residing in a gateway;

caching information regarding a mobile node in a cache residing in the gateway;

retrieving location based information for the mobile node using the information regarding the mobile node;

receiving a request for location based services; and

routing the request using previously retrieved location based information to route the request on behalf of the mobile node.

6. The method of claim 5, further comprising storing the location based information in the cache residing in the gateway and correlating the location based information with addressing information for the mobile node.

7. The method of claim 5, further comprising routing the request to an application server in the same visited network as the CSCF that received the request from the mobile node.

8. The method of claim 5, further comprising providing location based services to non IP multimedia subsystem (IMS) enabled mobile node.