RECOVERY FROM BURST PACKET LOSS IN INTERNET PROTOCOL BASED WIRELESS NETWORKS USING STAGGERCASTING AND CROSS-PACKET FORWARD ERROR CORRECTION

摘要

A method and apparatus for staggercasting are described including encoding and compressing a first data sequence, packetizing the compressed encoded data sequence to form a data packet, performing forward error correction (FEC) encoding on the data packet in order to generate a second data sequence related to the first data sequence, appending FEC control information as padding to the end of payload data of the data packet, packetizing the second data sequence to form a packet, multicasting the data packet to a first multicast group, multicasting the packet formed using the second data sequence delayed by an offset time to a second multicast group.

主权项

1. A system for transmitting data, comprising:
a packetizer, said packetizer packetizing said data; a forward error correction encoder, said forward error correction encoder performing forward error correction (FEC) encoding on said packetized data in order to generate a parity packet, said forward error correction encoder being in communication with said packetizer; said forward error correction encoder appending FEC control information as padding to the end of payload data of said packetized data, said FEC control information including a padding length, a source block number and an encoding unit ID, said forward error correction encoder being in communication with a buffer, said buffer being in communication with a protocol stack; a communications interface, said communications interface transmitting said packetized data and said parity packet, said communications interface being in communication with said protocol stack.