Apparatus and method for discontinuously receiving MBMS notification indicator in mobile communication system
An apparatus and method for receiving an MBMS (Multimedia Multicast/Broadcast Service) notification indicator allows discontinuous reception of 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.
1. A method performed by a mobile terminal 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,
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.
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 the DRX cycle length is associated with receiving a mobile terminal dedicated indicator from the network.
5. The method of claim 1 , wherein the notification indicator contains control information associated with receiving the point-to-multipoint service.
6. The method of claim 1 , wherein the notification indicator is provided using a point-to-multipoint paging indicator channel.
7. The method of claim 6 , wherein the point-to-multipoint paging indicator channel comprises a MICH.
8. The method of claim 1 , wherein the plurality of DRX cycle lengths are provided from one of UTRAN and a core network.
9. 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,
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.
10. The mobile terminal of claim 9 , wherein the point-to-multipoint DRX cycle length is equal to the longest DRX cycle length.
11. The mobile terminal of claim 9 , wherein the point-to-multipoint DRX cycle length is M times the longest DRX cycle length, where M is an integer.
12. The mobile terminal of claim 9 , wherein the DRX cycle length is associated with receiving a mobile terminal dedicated indicator from the network.
13. The mobile terminal of claim 9 , wherein the notification indicator contains control information associated with receiving the point-to-multipoint service.
14. The mobile terminal of claim 9 , wherein the notification indicator is provided using a point-to-multipoint paging indicator channel.
15. The mobile terminal of claim 14 , wherein the point-to-multipoint paging indicator channel comprises a MICH.
16. The mobile terminal of claim 9 , wherein the plurality of DRX cycle lengths are provided from one of UTRAN and a core network.
17. 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,
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.
18. The mobile terminal of claim 17 , wherein the point-to-multipoint DRX cycle length is equal to the longest DRX cycle length.
19. The mobile terminal of claim 17 , wherein the point-to-multipoint DRX cycle length is M times the longest DRX cycle length, where M is an integer.
20. The mobile terminal of claim 17 , wherein the DRX cycle length is associated with receiving a mobile terminal dedicated indicator from the network.
21. The mobile terminal of claim 17 , wherein the notification indicator contains control information associated with receiving the point-to-multipoint service.
22. The mobile terminal of claim 17 , wherein the notification indicator is provided using a point-to-multipoint paging indicator channel.
23. The mobile terminal of claim 22 , wherein the point-to-multipoint paging indicator channel comprises a MICH.
24. The mobile terminal of claim 22 , wherein the plurality of DRX cycle lengths are provided from one of UTRAN and a core network.