USE OF IP-MULTICAST TECHNOLOGY FOR 2-PARTY CALLS IN MOBILE COMMUNICATION NETWORKS

摘要

Upon a first communication unit 213 initiating a call request for a 2-party call with a second communication unit 215, a call server 235 identifies respective multicast IP addresses MC1, MC2 associated with the source and target. If the first communication unit 213, or associated site 205 desires to send payload to the second communication unit 215, it addresses the payload to the multicast IP address MC2 of the second communication unit, and the second communication unit 215, or associated site 206 joins the multicast address MC2 to receive the payload. Conversely, if the second communication unit 215, or associated site 206 desires to send payload to the first communication unit 213, it addresses the payload to the multicast IP address MC1 of the first communication unit, and the first communication unit 213, or associated site 205 joins the multicast address MC1 to receive the payload.