Proportional differentiated services: delay differentiation and packet scheduling
IEEE/ACM Transactions on Networking (TON)
Ordered packet scheduling in wireless ad hoc networks: mechanisms and performance analysis
Proceedings of the 3rd ACM international symposium on Mobile ad hoc networking & computing
Evaluation of packet scheduling algorithms in mobile ad hoc networks
ACM SIGMOBILE Mobile Computing and Communications Review
Distributed priority scheduling and medium access in ad hoc networks
Wireless Networks
A packet scheduling approach to QoS support in multihop wireless networks
Mobile Networks and Applications
Performance analysis and evaluation of IEEE 802.11e EDCF: Research Articles
Wireless Communications & Mobile Computing - Performance Evaluation of Wireless Networks
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This paper proposes a scheme to provide in a CSMA/CA based multi-hop wireless ad hoc network, a consistent and accurate proportional differentiation in average end-to-end packet delay. The proposed scheme, called PDMED uses a cross-layer approach that requires a distributed scheduler to adapt to the information from a QoS monitor, a route monitor and a channel monitor. Conceptually, the distributed scheduler dynamically adjusts the backoff duration of a flow based on its instantaneous deviation from the maximum average end-to-end packet delay. This is done such that a flow with a larger deviation from the maximum is given a longer backoff duration to give way to transmissions from other flows with smaller deviations. PDMED has been extensively evaluated through random event simulations using OPNET. The results confirm that it is capable of providing a consistent and accurate proportional differentiation, which is otherwise not achievable under various traffic conditions.