Toward the use of local monitoring and network-wide correction to achieve QoS guarantees in mobile ad hoc networks

Abstract

This paper presents the exploration of novel mechanisms toward providing Quality of Service (QoS) guarantees in mobile ad hoc networks. We study mechanisms that provide differentiated services to packets of varying priority traffic flows. These mechanisms do not require any central coordination and do not depend on any specific protocols at the physical, MAC, or network layers. Nodes independently monitor the rates of the highest priority flows and signal corrective mechanisms when these rates fall outside of specified local bounds. Triggering conditions for network-wide corrective mechanisms are designed to trade-off rapid reactive response to local QoS violations with control packet overhead. A range of corrective mechanisms are explored that attempt to maintain reactive response while improving total network utilization, including resources consumed by lower priority traffic. We provide simulation results that demonstrate the effectiveness of monitoring, reactive triggering, and basic and advanced corrective mechanisms. We discuss the extension of these novel mechanisms to a complete QoS solution for mobile ad hoc networks.

Verifying Route Request Procedure of AODV Using Graph Theory and Formal Methods

“…Several QoS models has been proposed for MANETs such as INSIGNIA [11], ASAP [12], SWAN [13,14,15], E-SWAN [16], FQMM [17] [18] and LWQ [19]. The major need of a QoS model is to define the methodology by which services e.g.…”

Improving the Performance of QoS Models in MANETs through Interference Monitoring and Correction

“…Several QoS models has been proposed for MANETs in the previous works such as INSIGNIA [9], ASAP [10], SWAN [11,12,13], (E-SWAN) [14], FQMM [15] [16] and LWQ [ 17]. The main purpose of a QoS model is to define the methodology by which certain types of services (e.g.…”

“…LWQ has been shown in [17] to be able to maintain better QoS guarantees for the highpriority flow in terms of packet rate and highpriority throughput compared to INSIGNIA and DIFFSERV. ii.…”

“…Despite having some guarantees to high-priority packets, the LWQ architecture can cause a reduction in the total throughput because of the corrective action taken by one-hop neighbours to stop transmission of other lower priority flows in attempt to maintain the rate of high-priority flows. As a result, this scheme leads to underutilisation of network resources [17].…”

Probabilistic Management of Ad-Hoc Networks

“…Corrective management operations can be decided from the monitoring information. For instance in [1], a network-wide correction can be defined based on a local monitoring to improve a quality-of-service differentiated service. In this approach, each network node monitors independently the rate of high priority flow.…”