Call setup method for providing push-to-talk service in a cellular mobile telecommunication system

• US 20050078627A1
• Filed: 10/12/2004
• Published: 04/14/2005
• Est. Priority Date: 10/11/2003
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Yoon, Seong-Il, Kim, Dae-Gyun, Kim, Tae-Won, Kong, Dong-Keon, Pyo, Jong-Bum
• Application Number:
  US10/961,061
• Publication Number:
  US 20050078627A1
• Time in Patent Office: Days
• US Class Current: 370/328
• CPC Class Codes: H04W 84/08 Trunked mobile radio systems

Abstract

Disclosed is a method for setting up a call of a push to talk (PTT) service in an access network of a cellular mobile telecommunication system in a system comprising a user agent (UA) capable of performing packet data communication, a cellular mobile telecommunication system capable of providing the UA with a packet data service, and a PTT server connected to the cellular mobile telecommunication system and capable of providing a PTT service with packet data. The method comprises the steps of creating a short data burst (SDB)-type PTT request message as a data burst record when the UA is paged and configuring a data base message (DBM) in such a manner that it includes the created SDB, inserting it into a general page message (GPM), and transmitting it via a predetermined forward channel.

Claims

1. A method for setting up a call for a push to talk (PTT) service in an access network of a cellular mobile telecommunication system in a system comprising a user agent (UA) capable of performing packet data communication, a cellular mobile telecommunication system capable of providing the UA with a packet data service, and a PTT server connected to the cellular mobile telecommunication system and capable of providing a PTT service for packet data, the method comprising the steps of:

creating a short data burst (SDB)-type PTT request message as a data burst record when paging is requested from the UA and

configuring a data base message (DBM) in such a manner that it includes the created SDB, inserting it into a general page message (GPM), and transmitting it via a predetermined forward channel.

2. The method as claimed in claim 1, wherein the predetermined forward channel is a forward common control channel (F-CCCH).

3. The method as claimed in claim 1, wherein the GPM includes the overhead update information of a configuration message sequence (CONFIG_MSG_SEQ) and an access message sequence (ACC_MSG_SEQ).

4. The method as claimed in claim 1, wherein the GPM includes a response field (RESPOND_IND) for determining whether to transmit a page response to the access network or not.

5. The method as claimed in claim 4, wherein the page response is transmitted to the access network via a random access channel (R-ACH) or a reverse extended access channel (R-EACH).

6. The method as claimed in claim 1, wherein the DBM is transmitted while being included in the added field (ADD_PFIELD) of the GPM.

7. A method for setting up a call for a push to talk (PTT) service in an access network of a cellular mobile telecommunication system in a system comprising a user agent (UA) capable of performing packet data communication, a cellular mobile telecommunication system capable of providing the UA with a packet data service, and a PTT server connected to the cellular mobile telecommunication system and capable of providing a PTT service for packet data, the method comprising the steps of:

creating a short data burst (SDB)-type PTT request message as a data burst record with the access network when a paging is requested to the UA, configuring a data burst message (DBM) in such a manner that it includes the created SDB, inserting it into a general page message (GPM), and transmitting it via a predetermined forward channel and

determining whether the GPM includes overhead update information with the UA upon receiving the GPM, immediately creating a page response without performing an overhead update substate, when the GPM includes overhead update information and there is no change in information, and transmitting the page response via a predetermined reverse channel.

8. The method as claimed in claim 7, wherein the predetermined forward channel is a forward common control channel (F-CCCH).

9. The method as claimed in claim 7, wherein the GPM includes the overhead update information of a configuration message sequence (CONFIG_MSG_SEQ) and an access message sequence (ACC_MSG_SEQ).

10. The method as claimed in claim 7, wherein the DBM is transmitted while being included in the added field (ADD_PFIELD) of the GPM.

11. The method as claimed in claim 7, wherein the GPM includes a response field (RESPOND_IND) for determining whether to transmit a page response to the access network.

12. The method as claimed in claim 11, wherein the page response is transmitted to the access network via a random access channel (R-ACH) or a reverse extended access channel (R-EACH).

13. A method for setting up a call for a push to talk (PTT) service in an access network of a cellular mobile telecommunication system in a system comprising a user agent (UA) capable of performing packet data communication, a cellular mobile telecommunication system capable of providing the UA with a packet data service, and a PTT server connected to the cellular mobile telecommunication system and capable of providing a PTT service for packet data, the method comprising the steps of:

configuring a data burst message (DBM) including a general page message (GPM) and a short data burst (SDB), which are separate messages having different link access contacts (LACs), when the UA is paged and

combining the GPM and the DBM and transmitting them via a predetermined forward channel.

14. The method as claimed in claim 13, wherein the predetermined forward channel is a forward common control channel (F-CCCH).

15. The method as claimed in claim 13, wherein the page response is transmitted to the access network via a random access channel (R-ACH) or a reverse extended access channel (R-EACH).

16. The method as claimed in claim 13, wherein the GPM includes the overhead update information of a configuration message sequence (CONFIG_MSG_SEQ) and an access message sequence (ACC_MSG_SEQ).

17. A method for setting up a call for a push to talk (PTT) service in an access network of a cellular mobile telecommunication system in a system comprising a user agent (UA) capable of performing packet data communication, a cellular mobile telecommunication system capable of providing the UA with a packet data service, and a PTT server connected to the cellular mobile telecommunication system and capable of providing a PTT service for packet data, the method comprising the steps of:

configuring a data burst message (DBM) including a general page message (GPM) and a short data burst (SDB), which are separate messages having different link access controls (LACs), with the access network when the UA is paged, combining the GPM and the DBM, and transmitting them via a predetermined forward channel and

determining whether the GPM includes overhead update information with the UA upon receiving the GPM and the DBM and omitting an overhead update substate when the overhead update information is included and there is no change in information.

18. The method as claimed in claim 17, wherein the predetermined forward channel is a forward common control channel (F-CCCH).

19. The method as claimed in claim 17, wherein no page response to the GPM is transmitted when the GPM is received in a combined form of the GPM and the DBM.

20. The method as claimed in claim 17, wherein the overhead update information includes a configuration message sequence (CONFIG_MSG_SEQ) and an access message sequence (ACC_MSG_SEQ).

21. A method for setting up a call for a push to talk (PTT) service in an access network of a cellular mobile telecommunication system in a system comprising a user agent (UA) capable of performing packet data communication, a cellular mobile telecommunication system capable of providing the UA with a packet data service, and a PTT server connected to the cellular mobile telecommunication system and capable of providing a PTT service of packet data, the method comprising the steps of:

creating an extended data burst message (EDBM) including overhead update information when a paging is requested to the UA and

transmitting the created EDBM via a predetermined forward channel.

22. The method as claimed in claim 21, wherein the overhead update information includes a configuration message sequence (CONFIG_MSG_SEQ) and an access message sequence (ACC_MSG_SEQ).

23. The method as claimed in claim 22, wherein the predetermined forward channel is a forward common control channel (F-CCCH).

24. A method for setting up a call for a push to talk (PTT) service in an access network of a cellular mobile telecommunication system in a system comprising a user agent (UA) capable of performing packet data communication, a cellular mobile telecommunication system capable of providing the UA with a packet data service, and a PTT server connected to the cellular mobile telecommunication system and capable of providing a PTT service for packet data, the method comprising the steps of:

creating an extended data burst message (EDBM) including overhead update information with the access network when a paging is requested to the user agent (UA) and transmitting the created EDBM via a predetermined forward channel and

determining whether the EDBM includes overhead update information or not with the UA upon receiving the EDBM, creating a page response without performing an overhead update substate when the overhead update information is included and there is no change in information, and transmitting it via a predetermined reverse channel.

25. The method as claimed in claim 24, wherein the overhead update information includes a configuration message sequence (CONFIG_MSG_SEQ) and an access message sequence (ACC_MSG_SEQ).

26. The method as claimed in claim 24, wherein the predetermined forward channel is a forward common control channel (F-CCCH).

27. The method as claimed in claim 24, wherein the predetermined reverse channel is a random access channel (R-ACH) or a reverse extended access channel (R-EACH).