Dual mode terminal supporting location-based services and control method for the same

• US 8,208,944 B2
• Filed: 07/01/2010
• Issued: 06/26/2012
• Est. Priority Date: 07/02/2009
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Ki Hwan, Park, Seong Jin, Kim, Woo Yol
• Primary Examiner(s): Kincaid, Lester
• Assistant Examiner(s): Jama, Isaak R
• Application Number:
  US12/829,336
• Publication Number:
  US 20110003602A1
• Time in Patent Office: 726 Days
• Field of Search: 455/457, 455/456.1
• US Class Current: 455/456.1
• CPC Class Codes: G01S 19/258 relating to the satellite constellation, e.g. almanac, ephemeris data, lists of satellites in view
• CPC Class Codes: H04W 4/02 Services making use of location information
• 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 dual mode terminal for providing location-based services is provided. The dual mode terminal includes a first area including a first wireless communication unit for communication with a first communication network and a first processor for processing signals transmitted and received to and from the first communication network, and a second area including a second wireless communication unit for communication with a second communication network and a second processor for processing signals transmitted and received to and from the second communication network. The first wireless communication unit includes a GPS receiver for receiving satellite GPS signals. The first processor includes a GPS engine for processing network location information received from the first communication network and the second communication network, and the second processor transfers network location information received from the second communication network to the first processor.

Claims

1. A dual mode terminal for providing location-based services, the dual mode terminal comprising:

a first area comprising;

a first wireless communication unit configured to communicate with a first communication network; and

a first processor configured to process signals transmitted to and received from the first communication network; and

a second area comprising;

a second wireless communication unit configured to communicate with a second communication network, and

a second processor configured to process signals transmitted to and received from the second communication network,

wherein;

the first wireless communication unit comprises a Global Positioning System (GPS) receiver configured to receive satellite GPS signals;

the second wireless communication unit does not comprise a GPS receiver;

the first processor processes network location information received from the first communication network by using a network location information protocol of the first communication network;

the second processor processes network location information received from the second communication network by using the network location information protocol of the second communication network;

the first processor measures the location of the dual mode terminal by using the satellite GPS signals received by the GPS receiver and the network location information received from the first communication network when the first wireless communication unit is communicating with the first communication network; and

the first processor transfers the received satellite GPS signals to the second processor and the second processor measures the location of the dual mode terminal by using the transferred satellite GPS signals and the network location information received from the second communication network when the second wireless communication unit is communicating with the second communication network.

2. The dual mode terminal of claim 1,

wherein the second processor is further configured to process a Secure User Plane Location (SUPL) protocol.

3. The dual mode terminal according to of claim 1, wherein the network location information protocol of the first communication network is a 3rd Generation Partnership Project 2 (3GPP2) IS-801 protocol.

4. The dual mode terminal according to of claim 1, wherein the network location information protocol of the second communication network is a Radio Resource Location Services Protocol (RRLP) or a Radio Resource Control (RRC) protocol.

5. The dual mode terminal of claim 1, wherein:

the first communication network is a Code Division Multiple Access (CDMA) communication network or a Wideband-CDMA (WCDMA) communication network and

the second communication network is a Long Term Evolution (LTE) communication network.

6. The dual mode terminal of claim 1, further comprising an application area configured to

determine whether the data transmitted to and received from the first and second wireless communication units area is data configured to communicate with the first communication network or the second communication network.

7. The dual mode terminal of claim 1, further comprising a host interface configured to transmit and receive data between the first processor and the second processor.

8. The dual mode terminal of claim 2, wherein the SUPL protocol is configured to ignore 1-bit information for a Closed Subscriber Group (CSG) among 29-bit cell ID information received from the second communication network.

9. A method for measuring a location of a dual mode terminal comprising a Code Division Multiple Access (CDMA) area and a Long Term Evolution (LTE) area configured to provide location-based services in a wireless communication system, the method comprising:

receiving a satellite Global Positioning System (GPS) signal through a GPS receiver included in the CDMA area and transferring the received satellite GPS signal to a CDMA processor included in the CDMA area;

receiving CDMA location information from a location information server connected to a CDMA network through a wireless communication unit included in the CDMA area, transferring the CDMA location information to an CDMA processor included in the CDMA area, processing the received CDMA location information by a CDMA processor using a CDMA location information protocol, measuring the location of the dual mode terminal by the CDMA processor using the received satellite GPS signal and the processed CDMA location information when the dual mode terminal is communicating with the CDMA network; and

receiving LTE location information from a location information server connected to an LTE network through a wireless communication unit included in the LTE area, transferring the LTE location information to an LTE processor included in the LTE area, processing the transferred LTE location information by the LTE processor using an LTE location information protocol, transferring the satellite GPS signal from the CDMA processor to the LTE processor, and measuring the location of the dual mode terminal by the LTE processor using the transferred satellite GPS signal and the processed LTE location information when the dual mode terminal is communicating with the LTE network,

wherein the CDMA area comprises the GPS receiver and the LTE area does not comprise a GPS receiver.

10. The method of claim 9, wherein the LTE location information protocol is a Radio Resource Location Service Protocol (RRLP) or a Radio Resource Control (RRC) protocol.

11. The method of claim 9, wherein the CDMA location information protocol is a 3rd Generation Partnership Project 2 (3GPP2) IS-801 protocol.