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    METHOD AND APPARATUS FOR CONTROLLING ACCESS TO A MULTIMEDIA BROADCAST MULTICAST SERVICE IN A PACKET DATA COMMUNICATION SYSTEM
    11.
    发明专利
    METHOD AND APPARATUS FOR CONTROLLING ACCESS TO A MULTIMEDIA BROADCAST MULTICAST SERVICE IN A PACKET DATA COMMUNICATION SYSTEM 未知

    公开(公告)号：CA2524652A1

    公开(公告)日：2004-11-18

    申请号：CA2524652

    申请日：2004-04-23

    Applicant: MOTOROLA INC

    Inventor： BURBRIDGE RICHARD ,  CAI ZHIJUN ,  AL-BAKRI BAN

    IPC: H04L12/18 ,  H04L12/56 ,  H04W4/06 ,  H04W28/08 ,  H04W28/12

    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 mobi le stations (MSs) (102-104), both idle mode and maintaining an active connectio n, serviced by the system and subscribed to an MBMS service. The system. broadcasts (306) a control message that includes an access probability facto r. In order to avoid overloading the systern 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 receive d 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.

    14.
    发明专利
    未知

    公开(公告)号：AT475934T

    公开(公告)日：2010-08-15

    申请号：AT05731259

    申请日：2005-04-04

    Applicant: MOTOROLA INC

    Inventor： CAI ZHIJUN ,  AL-BAKRI BAN ,  BURBIDGE RICHARD C

    IPC: G06F15/16 ,  H04J3/02 ,  H04J3/16 ,  H04L12/16 ,  H04L12/56 ,  H04L12/66 ,  H04Q11/00 ,  H04W28/18 ,  H04W48/10 ,  H04W74/00 ,  H04W76/02

    Abstract: A communication system determines whether to establish a point-to-point or point-to-multipoint communication for conveyance of Multimedia Broadcast Multicast Services (MBMS) data based on a number of user equipments being serviced by the communication system for MBMS service. The system broadcasts an access probability factor in a control message to the user equipments. For a large number of MBMS users being counted, the method will select a point-to-multipoint broadcast. If the number of user equipments being counted is relatively small, the access probability factor is modified by a ratio of the number of point-to-point connections over the point-to-multipoint connections over the number of users being counted. The UE may need to join multiple base stations' in the counting procedure to obtain the system diversity gain.

    Radio bearer management in a cellular communication system
    15.
    发明专利
    Radio bearer management in a cellular communication system 未知

    公开(公告)号：GB2431827B

    公开(公告)日：2007-10-24

    申请号：GB0522025

    申请日：2005-10-28

    Applicant: MOTOROLA INC

    Inventor： AL-BAKRI BAN ,  RANDALL PETER P

    IPC: H04L12/24 ,  H04L12/56 ,  H04W72/04

    Abstract: A cellular communication system comprises a network based radio bearer controller (123) which is arranged to control and manage the setup and operation of radio bearers. The radio bearer controller comprises a RAB processor (201) which is arranged to set up a plurality of user plane radio bearers for a user equipment (101). The plurality of user plane radio bearers all support a common service. The radio bearer controller (123) further comprises a link processor (203) which links the plurality of user plane radio bearers. The radio bearer controller (123) can process linked user plane radio bearers in relation to each other, for example by terminating all linked user plane radio bearers if a single radio bearer fails. The invention may be particularly suitable for a UMTS (Universal Mobile Telecommunication System) communication system supporting services using a plurality of UMTS user plane radio bearers.

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