| 摘要 |
A technique for controlling a point-to-multipoint (PTM) transmission of data over a PTM-enabled network (150) to a user group is proposed. In a first PTM transmission, a location information query message is distributed into a group service area (154). Upon receiving the query message, items of user equipment respond with location information response messages comprising location information indicative of a location of the respective user equipment. On the basis of the received location information response messages, a content transmission area (156, 157, 158) is determined. A second PTM transmission is then initiated into the content transmission area for content distribution. Furthermore, the content may be distributed via unicast retrieval.
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