A lightweight distributed scheme for mitigating inter-user interference in body sensor networks |
| |
| Authors: | Wen Sun Yu Ge Wai-Choong Wong |
| |
| Affiliation: | 1. Department of Electrical and Computer Engineering, National University of Singapore, Singapore;2. Sense and Sense-abilities Programme, Institute for Infocomm Research, Singapore;1. Department of Computer Science, University of California, Irvine, CA, USA;2. Computer Science Laboratory, SRI International, Menlo Park, CA, USA;1. Department of Information and Communication Engineering, Yeungnam University, Gyeongsan 712-749, Republic of Korea;2. School of Electronic Engineering, Soongsil University, Dongjak-gu, Seoul 156-743, Republic of Korea;1. Department of Electronic Engineering, City University of Hong Kong, Hong Kong Special Administrative Region;2. Engineering Sciences Department, The Open University of Hong Kong, Hong Kong Special Administrative Region;1. Department of Electrical Engineering and Computer Science, Seoul National University, Seoul, Republic of Korea;2. Institute of Logistics Information Technology, Pusan National University, Pusan, Republic of Korea;1. School of Electrical and Computer Engineering, National Technical University of Athens, Iroon Politechniou 9, 15773 Athens, Greece;2. Department of Electronics Engineering, Technological Education Institute of Piraeus, Petrou Ralli & Thivon 250, 12244 Aegaleo, Greece;1. School of Computer Science and Engineering, University of New South Wales, NSW 2052, Australia;2. School of Information Technologies, University of Sydney, NSW 2006, Australia |
| |
| Abstract: | Inter-user interference deteriorates reliable communication in body sensor networks (BSNs) when multiple BSNs are transmitting simultaneously in close proximity to each other. This paper presents a lightweight and distributed inter-user interference mitigation (IIM) scheme, that can be easily integrated with the IEEE 802.15.4 protocol stack. The proposed scheme takes into consideration the generic property of low channel utilization in BSNs and enables affected BSNs to adaptively reschedule their transmission time or switch channels. Based on the detected information from neighboring BSNs, BSNs reschedule their transmissions in a distributed and coordinated manner, so that wireless channels can be effectively utilized by multiple BSNs. Moreover, the IIM scheme is performed only when the performance of the BSN is degraded to an unacceptable level due to severe interference to reduce the rescheduling cost. Simulation results show that the proposed scheme improves the network throughput by 18% and reduces the energy consumption by 22% as compared with the existing beacon schedule scheme. |
| |
| Keywords: | Inter-user interference Interference mitigation Body sensor networks Scheduling algorithm |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
