A Novel QoS Admission Control for Ad Hoc Networks

Abstract

For real-time traffic requirements in mobile ad hoc networks a novel and effective QoS admission control routing protocol (QACRP) is proposed in this paper. With a limit amount of extra overhead, QACRP can avoid network congestion by a simple and precise admission control to block most of overloading flow-requests in route discovery process. System simulations show that this proposed scheme can increase the system throughput and reduce both the dropping rate and the end-to-end delay when compared with previous QoS routing schemes like QoS-aware routing protocol and CACP protocol. Hence, QACRP is surely an effective routing protocol to provide QoS guarantee for real-time traffic.

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

“…The survey has revealed that there are generally three distinct categories of approaches to estimating the achievable throughput. Protocols may either: 1) monitor the channel idle time ratio (CITR), and then take the minimum value on a route (possibly including cs-neighbours as well) [11], [25], [27], [29], [31], [32], [34], [35], [37], [38], [39], [41], [42], [43], [12];…”

“…The QoS admission control routing protocol (QACRP) described in [41] combines features from CACP (Section V-B1), QAODV-AC (Section V-C5) and CCAODV (Section V-C4), and proposes some modifications. Nodes' local residual capacities are determined via the CITR.…”

“…This could lead to some false admissions. There is no discussion in [41] of how the protocol handles QoS assurance violations or route failures, although it may be assumed that the action undertaken is similar to CACP. In summary, this protocol does not contain any previously unseen features, but combines features of earlier-published protocols in new ways.…”

Route Capacity Estimation Based Admission Control and QoS Routing for Mesh Networks

“…This work cannot provide real-time QoS provisions and no actual interface between routing and admission control. Similarly, in ad-hoc network settings, [7] proposed an AODV routing protocol based admission control, whereas it blocks the over-loaded flow requests during the routing discovery procedure. [8] is much related to our work that makes admission decision by estimating the achievable capacity between any pair of ingress and egress nodes with only packet loss constraint, assuming traffics arrive according to Gaussian distribution.…”

Two Phase Admission Control for QoS Mobile Ad Hoc Networks

“…For providing a better performance, QoS admission control routing protocol (QACRP) based on the AODV protocol was proposed in [7] which discussion focuses mainly on the admission control and route establishment for QoSflow. QACRP consider neither route-setup for many QoSflows, nor the possible modification of the routing table at each node.…”