| 摘要 |
<p>The invention relates to a method and apparatus for transmitting group messages in a packet radio network comprising at least one support node (SGSN) and a plurality of group members (MS) and at least one defined area. The support node (SGSN) knows the identity of group members (MS) in said area. The network comprises broadcast connections and point-to-point connections. The method according to the invention comprises: keeping track of the group members (MS) that have not received the group message and determining whether or not their number exceeds a predetermined threshold; in response to a positive determination in the previous step, transmitting the group message over a broadcast connection; and in response to a negative determination, transmitting the group message to the group members (MS) over a point-to-point connection.</p> |
