Dynamic optimization for receivers using distance between a repair head and a member station in a repair group for receivers having a closely knit topological arrangement to locate repair heads near the member stations which they serve in tree based repair in reliable multicast protocol

Abstract

Receiver stations located close together in a computer network dynamically form a multicast repair tree by a plurality of receiver stations choosing a repair head station from among the closely located receiver stations. A receiver station calculates its distance from a repair head station by subtracting the decremented TTL value read from the IP header from the initial value of the TTL parameter carried in field TTL SCOPE of HELLO messages, transmitted by repair head stations. Using a criteria that a closer repair head station is a more optimum repair head station, receiver stations listen to each received HELLO message, calculate the distance to the repair head station, and reaffiliate with the closest repair head station.

Dependencies are inferred from the claim text.