METHOD FOR INTERWORKING BETWEEN ACCESS CONTROL ROUTER AND POSITION DETERMINATION ENTITY IN POSITION RECOGNITION SYSTEM BASED ON PORTABLE INTERNET AND SYSTEM THEREFOR

• US 20080039118A1
• Filed: 08/07/2007
• Published: 02/14/2008
• Est. Priority Date: 08/10/2006
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: HYUN, Moon-Pil, Park, Sung-Bae, You, In-Jae, Kim, Jin-Won, Jung, Hee
• Granted Patent: US 7,957,281 B2
• Time in Patent Office: Days
• US Class Current: 455/456.1
• CPC Class Codes: H04W 4/02 Services making use of location information
• CPC Class Codes: H04W 8/08 Mobility data transfer
• CPC Class Codes: H04W 80/04 Network layer protocols, e.g. mobile IP [Internet Protocol]
• CPC Class Codes: H04W 88/005 Data network PoA devices

Abstract

Disclosed is a method for interworking between an ACR and a PDE in a position recognition system based on a portable Internet and a system therefor. A scheme for TCP/IP-based socket connection between the PDE and the ACR is defined. A data packet transmitted and received between the PDE and the ACR is also defined so that the PDE can receive a necessary measurement value from the ACR during position determination. The definition of the interworking between the ACR and the PDE serves as a basis for accommodating various services.

Claims

1. A method for interworking between an access control router and a position determination entity in a position recognition system based on a portable Internet, the method comprising the steps of:

requesting by the position determination entity that the access control router establish a socket connection;

determining if a connection response is received in response to the request within a predetermined period of time;

transmitting an alive request regarding a currently connected port when it is determined that the connection response has been received;

transmitting to the access control router a message for requesting a position determination in response to a position determination request after receiving a response to the alive request; and

performing position determination by using a measurement value contained in the response to the position determination request after receiving the response.

2. The method as claimed in claim 1, further comprising:

retransmitting the alive request a predetermined number of times when the connection response fails to be received within the predetermined period of time; and

releasing the socket connection when the connection response fails to be received after retransmission is performed the predetermined number of times.

3. The method as claimed in claim 1, further comprising:

waiting for a response to the alive request for a predetermined period of time after transmitting the alive request;

taking a time-out when the response to the alive request fails to be received after the predetermined period of time has passed; and

retransmitting the alive request a predetermined number of times until the response to the alive request is received.

4. The method as claimed in claim 3, further comprising closing the currently connected port when the response to the alive request fails to be received after the predetermined number of times are exceeded.

5. The method as claimed in claim 4, further comprising:

requesting a socket connection via a standby port after closing the currently connected port;

transmitting a alive request regarding the standby port when a connection response is received within a predetermined period of time after requesting the socket connection; and

performing a position determination when a response to the alive request is received within a predetermined period of time.

6. A position recognition system based on a portable Internet for interworking between an access control router and a position determination entity, the system comprising:

a position determination entity for transmitting a connection request for a socket connection, determining if a connection response is received within a predetermined period of time, transmitting a alive request regarding a currently connected port when it is determined that the connection response has been received, transmitting a position determination request message in response to a position determination request after receiving a response to the alive request, and performing a position determination by using a measurement value contained in a position determination response message after receiving the position determination response message;

an access control router for transmitting a connection response to the connection request of the position determination entity, transmitting a response to the alive request when the access control router is in a normal condition after receiving the alive request, forwarding the position determination request message to a portable subscriber station after receiving the position determination request message, and forwarding a position determination response message to the position determination entity after receiving the position determination response message in response to the position determination request message; and

a base station for receiving the position determination request message from the access control router, transmitting the position determination request message to the portable subscriber station, providing the portable subscriber station with information regarding neighboring base stations, and transmitting the position determination response message from the portable subscriber station to the access control router.

7. The system as claimed in claim 6, wherein the position determination entity is adapted to retransmit the alive request a predetermined number of times when the connection response fails to be received within the predetermined period of time and release the socket connection when the connection response fails to be received after retransmission is performed more than the predetermined number of times.

8. The system as claimed in claim 6, wherein the position determination entity is adapted to time-out when the response to the alive request fails to be received after the alive request has been transmitted and the predetermined period of time has passed and retransmit the alive request a predetermined number of times until the response to the alive request is received.

9. The system as claimed in claim 8, wherein the position determination entity is adapted to close the currently connected port when the response to the alive request fails to be received even after the predetermined number of times are exceeded.

10. The system as claimed in claim 9, wherein the position determination entity is adapted to request a socket connection via a standby port after closing the currently connected port, transmit a alive request regarding the standby port when a connection response is received within a predetermined period of time after requesting the socket connection, and perform a position determination when a response to the alive request is received within a predetermined period of time.