Method and apparatus for controlling access to a multimedia...

Details Method and apparatus for controlling access to a multimedia... Method and apparatus for controlling access to a multimedia...

2004-04-23

2009-02-17

Eisen, Alexander (Department: 2617)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S412200, C455S450000

Reexamination Certificate

active

07493117

ABSTRACT:
A communication system (100) determines whether to establish a point-to-multipoint communication or a point-to-point communication for conveyance of Multimedia Broadcast Multicast Service (MBMS) data based on a number of mobile stations (MSs) (102-104), both idle mode and maintaining an active connection, serviced by the system and subscribed to an MBMS service. The system, broadcasts (306) a control message that includes an access probability factor. In order to avoid overloading the system with responses to the control message, MSs maintaining an active connection ignore (506, 508) the control message while idle mode MSs determine (506, 512) whether to respond based on the access probability factor. The system compares (310) a number of received responses to a threshold and determines whether to establish a point-to-multipoint communication (312) or a point-to-point communication (322) based on the comparison. The system also adjusts (314, 330) the access probability factor based on the number of responses.

REFERENCES:
patent: 6987749 (2006-01-01), Cai et al.
patent: 2004/0157640 (2004-08-01), Pirskanen et al.
patent: 2007/0086441 (2007-04-01), Kall et al.
patent: 0165817 (2001-09-01), None
patent: 03030431 (2003-04-01), None
3GPP TSG-RAN2/3 Joint MBMS Meeting #1, Wokingham, Berks, UK, Jan. 15-16, 2003; 2gpp document Tdoc R2—3—63 cited in the application.
TSG—RAN Meeting #19, Birmingham UK, 11-4 Mar. 2003; Satus Report of WI Introduction of the Multimedia Broadcast Multicast Service (MBMS) in RAN, p. 2.

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