Invention Grant
US08014772B2 Provision of a multimedia broadcast/multicast service (MBMS) for a user equipment moving along cells in a cellular mobile communication system 有权
为在蜂窝移动通信系统中沿着小区移动的用户设备提供多媒体广播/多播服务(MBMS)

Provision of a multimedia broadcast/multicast service (MBMS) for a user equipment moving along cells in a cellular mobile communication system
Abstract:
Procedures are provided for the establishment of MBMS services in different cells of a cellular telecommunications network, in particular, for maintaining the transmission of MBMS data to a particular user equipment, even when it moves from one cell to another when the service is provided in different ways in different cells. In particular, when a user equipment receives a multimedia data service in a first cell via a certain type of connection (i.e., a point-to-point connection/while requiring an RRC Connection, a point-to-multipoint connection without/while requiring an RRC Connection), and moves to a second cell where the type of connection used to provide the service is different, specific actions are undertaken (e.g., request for an RRC Connection, release of an RRC Connection, etc), depending on the type of connection change carried out. Embodiments for the establishment of the most adequate connection (p-t-p, p-t-m) in a cell are disclosed as well (e.g., by sending a message from a SRNC to a CRNC).
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