Patent ID: 7969974
Filing Date: 2011-06-28
Classification: H04B,H04L

Abstract:
1. A method, comprising: receiving a first plurality of packets from an active stream at an output device and communicating the first plurality of packets to a next destination; receiving a second plurality of packets from a standby stream of the output device, wherein the streams are sent by an input device; and performing a switchover at the output device such that the second plurality of packets are communicated to the next destination and the first plurality of packets are not, wherein the switchover is triggered when a portion of the first plurality of the packets from the active stream is not received during a period of time that is greater than a majority of inter-arrival times of the second plurality of packets on the standby stream, wherein the switchover is performed after waiting for a period of inactivity on the active stream that is greater than an estimated maximum inter-arrival time (EMIT) of the second plurality of the packets of the standby stream, wherein the EMIT is computed by observing an average inter time (AIT) and adding that to a standard inter-arrival deviation (SID), which is multiplied by a constant.