Patent ID: 8806551

Claim:
A method for improving error resilience in Internet Protocol multimedia communication, comprising: receiving a multimedia stream at a retransmission (RET) server configured to store for retransmission a plurality of packets forming a most recent portion of the multimedia stream; and forwarding, toward a device associated with a retransmission request, only retransmission packets able to be timely processed by said device as indicated by a time stamp included within said retransmission request of a packet being processed by said device; wherein a time that a packet[k] may be forwarded to said device is expressed by the equation: t[k]=t req +u[k]−u out −T RT where: f req is the time the RET server receives a request for retransmission; u[k]−u out is the latest a packet with a sequence number s[k] must arrive at the device after device transmission of the request; T RT is a round trip packet travel time between the device and RET server.