Cooperative Header Compression

F.H.P. Fitzek and T. K. Madsen and P. Popovski and

R. Prasad and M. Katz.

Cooperative IP Header Compression for Parallel Channels in Wireless Meshed Networks. In IEEE International

Conference on Communication (ICC). 2005

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Scenario: multiple channels between terminal and cellular network

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HC Approach Single Channel

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HC Approach Multiple Channels

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HC Approach Multiple channels with channel errors

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More Robust HC Approach by Exploiting Multiple Channels

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HC Approach: Possible Implementation

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Error healing

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AICs construction for three cooperative channels

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Packet Error Probability vs Channel Error Probability

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Efficiency vs Channel Error Probability

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Measurement Testbed

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Cooperative HC

Advantageous of the proposed schemeExploit cooperative behavior of parallel channels Bandwidth efficiencyLow memory consumption and low complexityRobustnessNo need for feedback channel (can be used for

multicasting)Only a small number of cooperative channels are

needed to perform efficiently

Analogy: FEC