Efficient Network-Coding-Based Opportunistic Routing Through Cumulative Coded Acknowledgments

The use of random linear Network Coding (NC) has significantly simplified the design of Opportunistic Routing (OR) protocols by removing the need of coordination among forwarding nodes for avoiding duplicate transmissions. However, NC-based OR protocols face a new challenge: How many coded packets should each forwarder transmit? To avoid the overhead of feedback exchange, most practical existing NC-based OR protocols compute offline the expected number of transmissions for each forwarder using heuristics based on periodic measurements of the average link loss rates and the ETX metric.

Provided by: Institute of Electrical & Electronic Engineers Topic: Networking Date Added: Oct 2011 Format: PDF

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