Proceedings of the 10th annual international conference on Mobile computing and networking
Versatile low power media access for wireless sensor networks
SenSys '04 Proceedings of the 2nd international conference on Embedded networked sensor systems
Self-management in chaotic wireless deployments
Proceedings of the 11th annual international conference on Mobile computing and networking
Starvation mitigation through multi-channel coordination in CSMA multi-hop wireless networks
Proceedings of the 7th ACM international symposium on Mobile ad hoc networking and computing
Understanding and mitigating the impact of RF interference on 802.11 networks
Proceedings of the 2007 conference on Applications, technologies, architectures, and protocols for computer communications
Clear channel assessment in energyconstrained wideband wireless networks
IEEE Wireless Communications
| Hi-index | 0.00 |
In order to prevent a wireless node from corrupting other on-going transmissions, IEEE 802.11 medium access control (MAC) allows the node to access the channel only if the medium is determined to be idle. However, this rule sometimes can lead to extremely low transmission opportunities (i.e. starvation) of nodes owing to unfair carrier sensing induced by complex properties of wireless communication such as hidden/exposed-node topologies, asymmetric channel conditions, and other environmental factors. To share the wireless resource fairly, thus it is necessary for 802.11 nodes to detect the starvation and mitigate it. In this paper we propose a novel starvation detection technique that can identify whether the node is in the flow-in-the-middle (FIM) state by exploiting the physical energy detection mechanism implemented basically in 802.11 devices. In addition, we present a simple strategy that can mitigate the starvation. We show the effectiveness of our scheme via extensive simulations. The results demonstrate that our scheme recognizes the starvation and alleviates it effectively.