| 摘要 |
A method minimizes use of radio spectrum in communication delivery, where a multicast data packet is sent to at least one multicast group member via a radio access router controlling radio resources. The router determines a first cost of delivery of the multicast data packet as a multicast delivery to each active multicast group member and determines and compares the costs of a cell broadcast delivery and a delivery using dedicated channels. Based on the comparison, multicast packet delivery uses the cheapest applicable of the following delivery methods i) multicast data packet transmission to each active member of the multicast group using dedicated channel(s), ii) multicast data packet transmission to each active member of the multicast group using cell broadcast channel, or iii) multicast data packet transmission to some of the multicast group members using cell broadcast channel and to some of the group members using dedicated channels.
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