Effects of physical channel separation on application flows in a multi-radio multi-hop wireless mesh network: an experimental study on BilMesh testbed
Journal of Network and Computer Applications
253 - 265
Item Usage Stats
In this paper, we introduce BilMesh, an indoor 802.11 b/g mesh networking testbed we established, and we report about our performance experiments conducted on multi-hop topologies with single-radio and multi-radio relay nodes. We investigate and report the effects of using multi-radio, multi-channel relay nodes in the mesh networking infrastructure in terms of network and application layer performance metrics. We also study the effects of physical channel separation on achievable end-to-end goodput perceived by the applications in the multi-radio case by varying the channel separation between the radio interfaces of a multi-radio relay node. We have observed that the difference between TCP and UDP goodput performances together with the delay and jitter performance depends on the hop count. We also observed that assigning overlapping channels with a central frequency separation of 5-15 MHz may render the CSMA mechanism used in 802.11 MAC ineffective and hence reduce the overall network performance. Finally, we provide some suggestions that can be considered while designing related protocols and algorithms to deal with the observed facts.
Multi-hop wireless mesh networks
Carrier sense multiple access
Transmission control protocol
Published Version (Please cite this version)http://dx.doi.org/10.1016/j.jnca.2013.07.008
Showing items related by title, author, creator and subject.
Distributed joint flow-radio and channel assignment using partially overlapping channels in multi-radio wireless mesh networks Ulucinar, A. R.; Korpeoglu, I. (Springer, 2016)Equipping mesh nodes with multiple radios that support multiple wireless channels is considered a promising solution to overcome the capacity limitation of single-radio wireless mesh networks. However, careful and intelligent ...
Akgün, İ.; Tansel, B. Ç.; Wood, R. K. (2011)This paper defines and studies the multi-terminal maximum-flow network-interdiction problem (MTNIP) in which a network user attempts to maximize flow in a network among K ≥ 3 pre-specified node groups while an interdictor ...
Terzi, C.; Korpeoglu, I. (John Wiley & Sons Ltd., 2016)Many sensor node platforms used for establishing wireless sensor networks (WSNs) can support multiple radio channels for wireless communication. Therefore, rather than using a single radio channel for whole network, multiple ...