Distributed Flow Admission Control for Multimedia Services Over Wireless Ad Hoc Networks

Abstract

In this paper we propose a novel Priority-based Distributed flow Admission Control (PDAC) protocol to provide Quality of Service (QoS) to multimedia applications over the Dynamic Source Routing (DSR) protocolbased wireless ad hoc networks. In contrast to short-term packet forwarding, medium and long-term multimedia and real-time traffic may benefit from 'flow'-based transmission due to the reduction in the packet-level control overhead. In this paper, we introduce a new DSR option called the "Admission Control Option" for flow establishment, and present a new scalable transmission rate reservation protocol to support bandwidth-constrained traffic flows in interference-limited wireless ad hoc networks. It allows a node in the wireless ad hoc network to establish or discard a traffic flow state based on the global knowledge of traffic flow priority, and local knowledge in the form of interference and effective transmission rate. The PDAC scheme can also operate in a 'cross-layer' protocol architecture that encompasses the network layer and the MAC layer.

XL-WMSN: cross-layer quality of service protocol for wireless multimedia sensor networks

“…It calculates whether the available bandwidth is sufficient for the new flow. The proportional distribution admission control [20] scheme provides a network layer-based, prioritized distributed admission control and bandwidth reservation algorithm that allows a mobile node to establish or discard a flow based on the traffic flow's priority, channel conditions, transmission rates, and interference on link, etc. In [21] an admission control scheme with multi-constrained QoS providing is proposed.…”

“…The sink is positioned at (70,40) coordinates, and the event region is centered at (20,20) coordinates with a radius of 20 m. The source nodes start event reporting after 10 s in the simulation time. All simulations are repeated five times and average results of simulations are presented.…”

Admission control schemes for 802.11-based multi-hop mobile ad hoc networks: a survey

“…Details of these methods will be presented in the sections to come. INSIGNIA [33] MPARC [36] PDAC [39] QPART [43] INORA [32] QoS−AODV [19] CACP [11] StAC [12] AAC [25] ACOR [27] AQOR [18] CCAODV [15] HRAC [30] QACRP [41] QAODV−AC [42] SoftMAC [16] TAC [45] CACP−CS [11] MACMAN [35] DACME [17] ACSCQS [28] RFAR [44] ACRMP [29] IFCAC [31] IQOLSR [34] PAC [38] PMAC [39] MRCACP [37] Fig. 1.…”

“…In [39], the priority-based distributed flow AC (PDAC) protocol is proposed. It builds upon the flow-state extensions of the latest version of DSR [48].…”

“…The authors of [39] state that they are aware of CACP's [11] (discussed in Section V-B1) testing of the capacity of csneighbours, but chose not to implement a similar mechanism in order to reduce protocol overhead. This may result in false admissions.…”