SYSTEM AND METHOD FOR USING A PEER TO PEER MECHANISM TO REPAIR BROADCAST DATA IN WIRELESS DIGITAL BROADCAST NETWORKS

摘要

An improved system and method for repairing and/or retrieving lost or crushed data, such as files carried by the FLUTE protocol, by using a P2P network in wireless digital broadcast networks. According to various embodiments, when a peer device has failed to receive a data packet from operator, or when a data packet contains errors, the peer device sends a Search request to neighboring devices. The neighboring devices can either return the data packet in integrated form to the peer device or, if they do not possess the data packet in integrated form, reroute the request to other devices. Mechanisms are also provided for each peer device to maintain and update a table of neighboring devices including an identification of the devices and their connection capabilities.