Energy and data throughput for asymmetric inter-session network coding

Abstract

In this paper we investigate the impact of asymmetric traffic patterns on the energy consumption and throughput in a wireless multi hop network. Network coding is a novel technique for communication systems and a viable solution for wireless multi hop networks. State of the art research is mainly focusing on ideal scenarios with symmetric traffic patterns that are not realistic in a real life scenario. The main contribution of this paper is the investigation of the asymmetric traffic patterns in terms of throughput and energy consumption, and a validation of these results by real measurements on commercial platforms. The outcome of this paper confirms the analytical expression, and the results shows that even with a large asymmetric data rate there is a gain in terms of energy consumption and throughput when network coding is applied in compare to the case when network coding is not applied.

Impact of network coding on delay and throughput in practical wireless chain topologies

“…A similar approach is implemented by CATWOMAN in [3], which shows results similar to COPE. Furthermore, CATWOMAN has been evaluated with respect to energy efficiency in [4] and [5], and also confirms analytical results in [6].…”

Coping with asymmetric losses in CSMA/CA: Inter-session network coding performance evaluation and adaptive protocol design

“…This is not the case for standard routing techniques and is the reason network coding can outperform them by a larger margin than the predicted coding gain. A closer look at implementations in real systems and relying on a commercial platform (no alterations to the MAC layer) [4], [5] as well as [2] show that the throughput performance decreases when the system goes past its maximum stable throughput. This is particularly surprising in [4], [5], which confirmed the analytical results in [3], except for the behavior for an overloaded network in which [3] predicted no degradation under those conditions.…”