Apparatus and method for discontinuously receiving MBMS notification indicator in mobile communication system

• US 20050176474A1
• Filed: 01/04/2005
• Published: 08/11/2005
• Est. Priority Date: 01/09/2004
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Young Dae, Yi, Seung-June, Chun, Sung-Duck
• Granted Patent: US 7,366,124 B2
• Time in Patent Office: Days
• US Class Current: 455/574
• CPC Class Codes: H04B 7/26 at least one of which is mobile
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 48/12 using downlink control channel
• CPC Class Codes: H04W 72/30 Resource management for broadcast services

Abstract

An apparatus and method for receiving an MBMS (Multimedia Multicast/Broadcast Service) notification indicator is disclosed to discontinuously receive an MBMS notification indicator in a mobile communication system. A mobile terminal receives and stores a terminal-specific DRX (Discontinuous Reception) cycle length and the longest DRX cycle length broadcasted in a cell. The mobile terminal discontinuously receives a notification indicator for a specific MBMS during a terminal-specific DRX cycle length of the longest DRX cycle length by using the stored terminal-specific DRX cycle length and the longest DRX cycle length used in a cell.

Claims

1. A method for receiving a notification indicator for a point-to-multipoint service in a mobile communication system, the method comprising:

receiving a plurality of discontinuous-reception (DRX) cycle lengths from a network;

recognizing the longest DRX cycle length from the plurality of DRX cycle lengths;

determining a point-to-multipoint DRX cycle length based on the longest DRX cycle length; and

determining whether to receive the notification indicator for the point-to-multipoint service, wherein if the notification indicator has been received in a point-to-multipoint DRX cycle having the point-to-multipoint DRX cycle length, the mobile terminal suspends receiving of the notification indicator in the same point-to-multipoint DRX cycle.

2. The method of claim 1, wherein the point-to-multipoint DRX cycle length is equal to the longest DRX cycle length.

3. The method of claim 1, wherein the point-to-multipoint DRX cycle length is M times the longest DRX cycle length, where M is an integer.

4. The method of claim 1, wherein if the notification indicator has not been received in the point-to-multipoint DRX cycle having the point-to-multipoint DRX cycle length, the mobile terminal receives a subsequent notification indicator in the same point-to-multipoint DRX cycle.

5. The method of claim 1, wherein the DRX cycle length is associated with receiving a mobile terminal dedicated indicator from the network.

6. The method of claim 1, wherein the notification indicator contains control information associated with receiving the point-to-multipoint service.

7. The method of claim 1, wherein the notification indicator is provided using a point-to-multipoint paging indicator channel.

8. The method of claim 7, wherein the point-to-multipoint paging indicator channel comprises a MICH.

9. The method of claim 1, wherein the plurality of DRX cycle lengths are provided from one of UTRAN and a core network.

10. A mobile terminal for receiving a notification indicator for a point-to-multipoint service in a mobile communication system, the mobile terminal comprising:

means for receiving a plurality of discontinuous-reception (DRX) cycle lengths from a network;

means for recognizing the longest DRX cycle length from the plurality of DRX cycle lengths;

means for determining a point-to-multipoint DRX cycle length based on the longest DRX cycle length; and

means for determining whether to receive the notification indicator for the point-to-multipoint service, wherein if the notification indicator has been received in a point-to-multipoint DRX cycle having the point-to-multipoint DRX cycle length, the mobile terminal suspends receiving of the notification indicator in the same point-to-multipoint DRX cycle.

11. The mobile terminal of claim 10, wherein the point-to-multipoint DRX cycle length is equal to the longest DRX cycle length.

12. The mobile terminal of claim 10, wherein the point-to-multipoint DRX cycle length is M times the longest DRX cycle length, where M is an integer.

13. The mobile terminal of claim 10, wherein if the notification indicator has not been received in the point-to-multipoint DRX cycle having the point-to-multipoint DRX cycle length, the mobile terminal receives a subsequent notification indicator in the same point-to-multipoint DRX cycle.

14. The mobile terminal of claim 10, wherein the DRX cycle length is associated with receiving a mobile terminal dedicated indicator from the network.

15. The mobile terminal of claim 10, wherein the notification indicator contains control information associated with receiving the point-to-multipoint service.

16. The mobile terminal of claim 10, wherein the notification indicator is provided using a point-to-multipoint paging indicator channel.

17. The mobile terminal of claim 16, wherein the point-to-multipoint paging indicator channel comprises a MICH.

18. The mobile terminal of claim 10, wherein the plurality of DRX cycle lengths are provided from one of UTRAN and a core network.

19. A mobile terminal for receiving a notification indicator for a point-to-multipoint service in a mobile communication system, the mobile terminal comprising:

means for receiving a plurality of discontinuous-reception (DRX) cycle lengths from a network;

a processor that recognizes the longest DRX cycle length from the plurality of DRX cycle lengths and determines a point-to-multipoint DRX cycle length based on the longest DRX cycle length, wherein the processor determines whether to receive the notification indicator for the point-to-multipoint service, wherein if the notification indicator has been received in a point-to-multipoint DRX cycle having the point-to-multipoint DRX cycle length, the mobile terminal suspends receiving of the notification indicator in the same point-to-multipoint DRX cycle.

20. The mobile terminal of claim 19, wherein the point-to-multipoint DRX cycle length is equal to the longest DRX cycle length.

21. The mobile terminal of claim 19, wherein the point-to-multipoint DRX cycle length is M times the longest DRX cycle length, where M is an integer.

22. The mobile terminal of claim 19, wherein if the notification indicator has not been received in the point-to-multipoint DRX cycle having the point-to-multipoint DRX cycle length, the mobile terminal receives a subsequent notification indicator in the same point-to-multipoint DRX cycle.

23. The mobile terminal of claim 19, wherein the DRX cycle length is associated with receiving a mobile terminal dedicated indicator from the network.

24. The mobile terminal of claim 19, wherein the notification indicator contains control information associated with receiving the point-to-multipoint service.

25. The mobile terminal of claim 19, wherein the notification indicator is provided using a point-to-multipoint paging indicator channel.

26. The mobile terminal of claim 25, wherein the point-to-multipoint paging indicator channel comprises a MICH.

27. The mobile terminal of claim 25, wherein the plurality of DRX cycle lengths are provided from one of UTRAN and a core network.