System and method of providing push-to-talk service in a mobile communication system

• US 20050164726A1
• Filed: 01/27/2005
• Published: 07/28/2005
• Est. Priority Date: 01/28/2004
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Yeo, In-Dong
• Application Number:
  US11/051,622
• Publication Number:
  US 20050164726A1
• Time in Patent Office: Days
• US Class Current: 455/518
• CPC Class Codes: H04L 65/1016 IP multimedia subsystem [IMS]
• CPC Class Codes: H04L 65/4061 Push-to services, e.g. push-to-talk or push-to-video
• CPC Class Codes: H04W 4/10 Push-to-Talk [PTT] or Push-On-Call services
• CPC Class Codes: H04W 76/45 for Push-to-Talk [PTT] or Push-to-Talk over cellular [PoC] services
• CPC Class Codes: H04W 84/08 Trunked mobile radio systems

Abstract

A system and method of providing a Push-To-Talk (PTT) service in a mobile communication system are provided. Particularly, a new service option for the PTT service is defined and set before a call setup between a mobile station (MS) and a base station (BS) in order to allow the MS and the BS to recognize a PTT call. Upon receipt of an origination message including the service option of the PTT service from the MS, the BS establishes a Radio Link Protocol (RLP) with the MS and establishes a Point-to-Point Protocol (PPP) session to provide the PTT service in packet data to the MS. PRIORITY

Claims

1. A method of providing a Push-to-Talk (PTT) service to a mobile station (MS) via a base station (BS) in a mobile communication system wherein the BS provides a packet data service to the MS on a radio channel, the method comprising the steps of:

establishing a radio link protocol (RLP) with the MS, upon receipt of an origination message including a service option for the PTT service from the MS; and

establishing a point-to-point protocol (PPP) session to provide the PTT service in packet data to the MS.

2. The method of claim 1, wherein the service option includes a Proprietary Indicator field, a Service Option Revision field, and a Base Option Number field.

3. The method of claim 2, wherein the Base Option Number field indicates a PTT call between the MS and the BS.

4. The method of claim 2, wherein the Proprietary Indicator field comprises 1 bit, the Service Option Revision field comprises 3 bits, and the Base Option Number field comprises 12 bits.

5. The method of claim 1, wherein the first step of establishing further comprises:

providing a Binary Large Objects Block (BLOB) parameter for a voice call for the PTT.

6. The method of claim 5, further comprising:

setting the BLOB parameter to either a one or a zero.

7. The method of claim 6, wherein the BS operates in a transparent mode when the BLOB parameter is set to a zero.

8. The method of claim 7, wherein the BS does not provide retransmissions with the voice service.

9. A method of receiving a Push-to-Talk (PTT) service from a base station (BS) in a mobile station (MS) in a mobile communication system wherein the BS provides a packet data service to the MS on a radio channel, the method comprising the steps of:

transmitting to the BS an origination message including a service option for the PTT service;

allocating the packet data service to a fundamental channel by receiving a channel assignment message from the BS; and

establishing a point-to-point protocol (PPP) session to receive the PTT service in packet data from the BS.

10. The method of claim 9, wherein the service option includes a Proprietary Indicator field, a Service Option Revision field, and a Base Option Number field.

11. The method of claim 10, wherein the Base Option Number field indicates a PTT call between the MS and the BS.

12. The method of claim 10, wherein the Proprietary Indicator field comprises 1 bit, the Service Option Revision field comprises 3 bits, and the Base Option Number field comprises 12 bits.

13. A system for providing voice based Push-to-Talk (PTT) service in a mobile communication system, comprising:

a mobile station (MS) module in a mobile station for receiving a packet data service on a radio channel; and

a base station (BS) module in a base station for establishing a radio link protocol (RLP) with the MS module, upon receipt of an origination message including a service option for the PTT service from the MS module, and establishing a point-to-point protocol (PPP) session to provide the PTT service in packet data to the MS module.

14. The system of claim 13, wherein the service option includes a Proprietary Indicator field, a Service Option Revision field, and a Base Option Number field.

15. The system of claim 14, wherein the Base Option Number field indicates a PTT call between the MS module and the BS module.

16. The system of claim 14, wherein the Proprietary Indicator field comprises 1 bit, the Service Option Revision field comprises 3 bits, and the Base Option Number field comprises 12 bits.

17. The system of claim 13, wherein the BS module provides a Binary Large Objects Block (BLOB) parameter for a voice call for the PTT.

18. The system of claim 17, wherein the BS module sets the BLOB parameter to either a one or a zero.

19. The system of claim 18, wherein the BS module operates in a transparent mode when the BLOB parameter is set to a zero.

20. The system of claim 19, wherein the BS module does not provide retransmissions with the voice service.

21. A modular network for providing voice based Push-to-Talk (PTT) service in a mobile communication system, comprising:

a mobile station (MS) module adapted to receive a packet data service on a radio channel; and

a base station (BS) module adapted to establish a radio link protocol (RLP) with the MS module, upon receipt of an origination message including a service option for the PTT service from the MS module, and establish a point-to-point protocol (PPP) session in order to provide the PTT service in packet data to the MS module.

22. The modular network of claim 21 wherein the mobile station module is disposed in a wireless terminal and the base station module is disposed in at least one of a base station and a mobile switching center.