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With the growing needs of transmitting multimedia traffic in mobile Ad hoc networks (MANET), how to provide quality of service (QoS) guarantees in MANET becomes a hotspot. This paper introduces SWAN-a simple but available QoS model for MANET. After analyzing its principle, working background and drawbacks, a probabilistic-priority-based PSWAN model is proposed in this paper. By combining the probabilistic...
The MAC problem in a wireless network has intrigued researchers for years. The MAC protocol is also important for airborne ad hoc network in order to reducing TDMA overhead, increasing TDMA throughput, and decreasing End-to-End delay. Our proposed Token Cycle Scheduling described in this paper allow the exchange of control information in an efficient and contention free manner such that each participating...
IEEE 802.11e (EDCA) standard is concerned to support QoS in wireless ad-hoc networks. However, EDCA cannot control traffic when there is a congestion to guarantee QoS required by real-time and multimedia applications. Therefore, the ill-behaved sources consume the most of bandwidth allowed. That leads to some of source nodes (i.e. out-ranged nodes) suffer from the lack of bandwidth and unfairness...
In this paper we have proposed an adaptive scheduling algorithm to suit group mobility scenarios in the mobile WiMAX. The QoS scheduling scheme aims to minimize the end-to-end delay for real-time traffic. IEEE 802.16e is a wireless broadband network standard aimed at providing robust, high data rate mobile communication. The issue of group mobility in mobile WiMAX networks has not been explored so...
More and more applications supported by MANETs require quality of service (QoS). QoS can be expressed in terms of bandwidth or delay. In this paper, we study the impact of the scheduling policy used by each MANET node on the QoS granted to flows. We first show how to use WCBQ, a class based queueing scheduling, in a wireless network. We then compare the performances achieved by WCBQ and priority queueing...
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