Achieving end-to-end fairness in 802.11e based wireless multi-hop mesh networks

To mitigate the damaging impacts caused by interference and hidden terminals, it has proposed to use orthogonal channels in multi-hop wireless mesh networks. We demonstrate however that even if these issues are completely eliminated with perfectly assigned channels, gross unfairness can still exist amongst competing flows which traverse multiple hops. We propose the use of 802.lle's TXOP mechanism to restore/enforce fairness. The proposed scheme is simple, implementable using off-the-shelf devices and fully decentralised (requires no message passing)

Achieving end-to-end fairness in 802.11e based wireless multi-hop mesh networks

To mitigate the damaging impacts caused by interference and hidden terminals, it has proposed to use orthogonal channels in multi-hop wireless mesh networks. We demonstrate however that even if these issues are completely eliminated with perfectly assigned channels, gross unfairness can still exist amongst competing flows which traverse multiple hops. We propose the use of 802.lle's TXOP mechanism to restore/enforce fairness. The proposed scheme is simple, implementable using off-the-shelf devices and fully decentralised (requires no message passing)

Implementing TCP flow-Level fairness using 802.11e in a multi-radio mesh testbed

TCP is known to be subject to poor performance in multi-hop mesh networks. While most work has focused on interference and related issues, we note that cross-layer interactions can also induce considerable unfairness. In this paper, we propose a simple 802.11e scheme to mitigate these interactions and regulate TCP fairness in a flexible manner. The practical effectiveness of the approach is confirmed in a multihop, multi-radio testbed

Low-delay Dynamic Routing Using Fountain Codes

Abstract—This paper considers augmenting current maximum throughput routing algorithms to use fountain coding at senders. We demonstrate that this joint routing/coding approach is able to achieve significantly improved delay performance

Achieving end-to-end fairness in 802.11e based wireless multi-hop mesh networks

To mitigate the damaging impacts caused by interference and hidden terminals, it has proposed to use orthogonal channels in multi-hop wireless mesh networks. We demonstrate however that even if these issues are completely eliminated with perfectly assigned channels, gross unfairness can still exist amongst competing flows which traverse multiple hops. We propose the use of 802.lle's TXOP mechanism to restore/enforce fairness. The proposed scheme is simple, implementable using off-the-shelf devices and fully decentralised (requires no message passing)

OCCUPANCY ESTIMATION USING NON INTRUSIVE SENSORS IN ENERGY EFFICIENT BUILDINGS

International audienceA general approach is proposed to estimate the number of occupants in a zone using different kinds of mea- surements such as motion detection, power consump- tion or CO2 concentration. The proposed approach is inspired from machine learning. It starts by deter- mining among different measurements those that are the most useful by calculating the information gains. Then, an estimation algorithm is proposed. It relies on a C4.5 learning algorithm that yields human read- able decision trees using measurements to estimate the number of occupants. It has been applied to an office setting