Recovery from burst packet loss in internet protocol based wireless networks using staggercasting and cross-packet forward error correction

A system for transmitting data, comprising:

• means for packetizing said data;
• means for performing forward error correction (FEC) encoding on said packetized data in order to generate at least one parity packet;
• means for appending FEC information as padding to the end of payload data of said packetized data;
• means for transmitting said packetized data and said at least one parity packet.

A method for recovering from loss of a packet, said method comprising:

• receiving a data packet;
• receiving at least one parity packet;
• buffering said received data packet;
• detecting packet loss;
• forward error correction decoding said at least one parity packet to recover from packet loss using forward error correction information extracted from said data packet and from said at least one parity packet;
• and
• forwarding said recovered packet via an internal socket.

A system for recovering from loss of a packet, comprising:

• means for receiving a data packet;
• means for receiving at least one parity packet;
• means for buffering said received data packet;
• means for detecting packet loss;
• means for forward error correction decoding said at least one parity packet to recover from packet loss using forward error correction information extracted from said data packet and from said at least one parity packet;
• and
• means for forwarding said recovered packet via an internal socket.

A method for staggercasting, said method comprising:

• encoding and compressing a first data sequence;
• packetizing said compressed encoded data sequence to form a data packet;
• performing forward error correction (FEC) encoding on said data packet in order to generate a second data sequence related to said first data sequence;
• appending FEC information as padding to the end of payload data of said data packet;
• packetizing said second data sequence to form a packet;
• multicasting said data packet to a first multicast group;
• multicasting said packet formed using said second data sequence delayed by an offset time to a second multicast group.