Method and apparatus for hop-by-hop reliable multicast in wireless networks

摘要

A method and apparatus are described including performing hop-by-hop multicasting including network coding of data packets of a portion of content, wherein network coding further includes receiving an encoded data packet of a portion of content from an upstream transmitter, determining if the received encoded data packet is innovative, storing the received encoded data packet responsive to the first determination, determining if a full rank of the encoded data packet of the portion of content has been received, determining if an acknowledgement message for the portion of the content has already been sent to the upstream transmitter responsive to the second determination, sending the acknowledgement message to the upstream transmitter responsive to the third determination and discarding the received encoded data packet responsive to the first determination.

主权项

1. A method, said method comprising:
performing hop-by-hop multicasting including network coding of data packets of a portion of content, wherein said hop-by-hop multicasting includes adjusting a radio transmission mode responsive to channel conditions for each data packet, and wherein network coding further comprises:
receiving an encoded data packet of a portion of content from a parent node;determining if said received encoded data packet is innovative;storing said received encoded data packet if said received encoded data packet is innovative;determining if a full rank of said encoded data packet of said portion of content has been received;determining if an acknowledgement message for said portion of said content has already been sent to said parent node if said full rank of said encoded data packet of said portion of content has been received;sending said acknowledgement message to said parent node if said acknowledgement message for said portion of said content has not already been sent to said parent node; anddiscarding said received encoded data packet if said received encoded data packet is not innovative.