Progressive redundancy transmission

Details Progressive redundancy transmission Progressive redundancy transmission

1997-06-06

1999-11-23

Beausoliel, Jr., Robert W.

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

714 7, 714 8, 714 11, G06F 1116

Patent

active

059918942

ABSTRACT:
A method to recover lost data in a piece of information transmitted from a number of server computers to a client computer. The method includes the steps of transmitting by the server computers a piece of server data to the client computer. The piece of server data includes the piece of information and at least one redundant symbol. Due to the failing of at least a part of one of the server computers, data are lost. The client computer identifies such a loss. The client computer recovers the lost data using the one or more redundant symbols. Then, the remaining non-failing server computers transmit another set of server data, which include another piece of information with at least one additional redundant symbol over what was previously transmitted to the client computer. This will ensure that the client computer can recover additional data lost due to the failing of at least a part of another server computer. In another embodiment, the one or more redundant symbols are not transmitted until the client computer identifies that data are lost.

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