| US 7,493,117 B2 | ||
| Method and apparatus for controlling access to a multimedia broadcast multicast service in a packet data communication system | ||
| Zhijun Cai, North Richland Hills, Tex. (US); Ban Al-Bakri, Juan Les Pins (Austria); and Richard Burbidge, Hook (United Kingdom) | ||
| Assigned to Motorola, Inc., Schaumburg, Ill. (US) | ||
| Appl. No. 10/554,154 PCT Filed Apr. 23, 2004, PCT No. PCT/EP2004/050596 § 371(c)(1), (2), (4) Date Oct. 20, 2005, PCT Pub. No. WO2004/100590, PCT Pub. Date Nov. 18, 2004. |
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| Claims priority of application No. 03291106 (EP), filed on May 09, 2003. | ||
| Prior Publication US 2006/0252439 A1, Nov. 09, 2006 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. H04Q 7/20 (2006.01) | ||
| U.S. Cl. 455—434 [455/412.2; 455/450] | 24 Claims |
| 1. A method for controlling access to a Multimedia Broadcast Multicast Service (MBMS) service comprising:
determining a quantity of mobile stations (MSs) subscribed to the MBMS service and maintaining an active connection;
determining an access probability factor;
broadcasting a control message comprising the access probability factor;
receiving, from each of one or more idle mode mobile stations, a response to the control message;
comparing the number of received responses to a threshold to produce a comparison; and
determining whether to establish a point-to-multipoint communication or a point-to-point communication based on the comparison,
wherein it is determined to establish a point-to-multipoint communication when the number of responses exceeds the threshold;
and
upon determining to establish a point-to-multipoint communication:
adjusting the access probability factor based on the number of responses from idle mode mobile stations and the threshold,
and
establishing a point-to-multipoint communication channel.
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