LAYERED MULTICAST AND FAIR BANDWIDTH ALLOCATION AND PACKET PRIORITIZATION

摘要

Embodiments include an overlay multicast network. The overlay multicast network may provide a set of features to ensure reliable and timely arrival of multicast data. The embodiments include a congestion control system that may prioritize designated layers of data within a data stream over other layers of the same data stream. Each data stream transmitted over the network may be given an equal share of the bandwidth. Addressing in routing tables maintained by routers in the may utilize summarized addressing based on the difference in location of the router and destination address. Summarization levels may be adjusted to minimize travel distances for packets in the network. Data from high priority data stream layers may also be retransmitted upon request from a destination machine to ensure reliable delivery of data.

主权项

1. A video signal distribution system comprising:
a source endpoint, wherein the source endpoint scalably encodes video signals into layers to form a layered data stream, wherein the layered data stream comprises a base layer and a set of enhancement layers; a scalable video coding router, wherein the scalable video coding router forwards the base layer from the source endpoint to a video receiver endpoint, and wherein the scalable video coding router selectively forwards one or more of the set of enhancement layers based upon information received by the scalable video coding router; and wherein the layered data stream is transmitted via a communications channel configured for a selected network protocol.