Efficiency Gain for RoHC Compressor Implementations with Dynamic Configuration

Máté Tömösközi, Patrick Seeling

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Low latency and high reliability is a critical characteristics of many wireless use cases, such as real–time video surveillance. In a dense network the best way to resolve such problems is by utilizing the fastest and most reliable connection to the destination. Classical solutions, such as Reed–Solomon codes, increase the reliability, but also introduce additional coding delays at the relays. This paper describes the reduction of the packet delay achievable by network coding through a series of network nodes. Our metric captures the elapsed time between (network) encoding RTP frames and complete decoding of the packets on the receiver side while playing out the video recording contained in the payload. Our solutions are implemented and evaluated on serially connected Raspberry Pi devices and a network (de)coding enabled software running on a regular PC. We find that the recoding relays work at least as well as the systematic approach to network coding. In all cases network coding outperformed schemes employing the classical forward error correcting Reed–Solomon codes. This low per–packet delay and the inherent reliability of our schemes make these solutions particularly suitable for real–time multimedia delivery in contrast to other classical and network coding strategies.
Original languageEnglish
Title of host publicationIn Proc. of IEEE VTC-Fall Workshop on Cellular Internet of Things - Emerging Trends and Enabling Technologies
StatePublished - Sep 2016


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