Contention and Queue-Aware Routing Protocol for Mobile Ad Hoc Networks

Gao, Xueqin; Zhang, Xin Ming; Dong, Shi; Zou, Fengfu; Zhu, Wenbo

doi:10.1109/wicom.2007.410

Cited by 25 publications

(31 citation statements)

References 11 publications

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“…Contention and Queue-aware Routing (CQR) [6] is proposed that utilizes the contention information (contention window, CW) collected from the 802.11 Distributed Coordination Function (DCF) and queue size. Two load metrics are used for route selection, including MAC layer channel contention information, and the number of packets in the queue of node.…”

Section: Typical Improved Congestion Control Approachesmentioning

confidence: 99%

Review on Congestion Control Methods for Network Optimization in MANET

Kaur¹,

Singhai²

2015

IJCA

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Ad hoc network is a multi-hop temporary self-organized network consisting of many mobile nodes without any infrastructure. When the packets arriving at a node cannot be forwarded, they are dropped. Congestion occurs in a network if the number of packets being sent through the network is greater than the capacity of the network. The main objective of congestion control is to minimize the delay and buffer overflow caused by network congestion and hence enable the network to perform better. In this paper, we analyze the major factors affecting performance in ad hoc networks and discuss several typical improved congestion control approaches. Network performance of these different approaches is discussed. The limitations of different approaches are also mentioned and the proposed method for congestion control using network coding is discussed.

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Section: Typical Improved Congestion Control Approachesmentioning

confidence: 99%

Review on Congestion Control Methods for Network Optimization in MANET

Kaur¹,

Singhai²

2015

IJCA

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“…We use the mechanism based on contention window (CW) and queue length proposed in [25] for load estimation in a node. The random number resulting from the binary exponential back-off algorithm used in the DCF is uniformly distributed in a range, called the contention window, the size of which doubles each time the attempt to transmit is delayed, until a maximum size is reached for the range.…”

Section: Estimation Of Loadmentioning

confidence: 99%

“…Hence CW gives a good indication of contention of the channel. Thus the traffic load around a mobile node can be estimated by calculating the average contention of the channel around that node [25]. Traffic load over a long period is estimated in order to mitigate the effect of traffic bursts.…”

Section: Estimation Of Loadmentioning

confidence: 99%

QoS Aware Multipath Threshold Routing for Mobile Ad hoc Networks

Ali

Stewart²,

Shahrabi³

et al. 2014

IJAIS

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Due to their dynamic topology and lack of central administration, Quality of Service (QoS) provisioning in Mobile Ad hoc Networks (MANET) is a challenging task. QoS is crucial for supporting delay sensitive real-time services in MANETs. Due to the un-predictable behaviour and topology changes of such networks, routing protocols need to quickly and accurately capture and manage the delay, congestion and load at various locations of the network. This paper presents a novel threshold based multipath routing approach for enhanced QoS in MANETs. In this approach, when the available bandwidth of a link decreases below a defined threshold or average load or the forwarding delay at a node increases beyond a defined threshold, traffic is distributed over fail-safe multiple routes to reduce the load at a congested node. Through simulation results, we show that the proposed approach achieves improved QoS in terms of end-to-end delay, packet delivery ratio, and throughput for constant bit rate (CBR) traffic when compared with Optimised Link State Routing (OLSR), a popular single path proactive protocol for MANETs.

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“…Load or delay aware routing metrics [2], [3], [4], [5], [6] have been adopted by single path routing protocols to avoid congested routes.…”

Section: Related Workmentioning

confidence: 99%

“….The size of the contention window determines how long a node would backoff before attempting to gain access to the channel. In other words CW [5] indicates the busyness of the medium and can be considered as a useful metric for contention and traffic interference. A large CW would mean more amount of traffic interference.…”

Section: B Metric For Interflow Interference and Loadmentioning

confidence: 99%

A Link Quality Based Dispersity Routing Algorithm for Mobile Ad Hoc Networks

Terdal¹,

Mytri²,

Damodaram³

2012

IJCNIS

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-Multipath routing mechanisms have been preferred over single path routing to provide parallel fail safe paths and to maximize throughput. Applying traditional shortest path metric for multipath route selection leads to traffic concentration at some nodes resulting in congestion, thereby causing performance degradation . Interference caused due to neighbouring node traffic is another factor that further limit its performance gains. Towards this, to ease out congestion and improve network resource utilization we devise a load balancing strategy that splits the load among multiple paths according to link quality. Link quality metric is formulated considering the current load condition , traffic interference and energy of the intermediate nodes. To study the effectiveness of the proposed load distribution method we compare it with another load balancing strategy that forwards traffic along one path ,found using our link quality metric and which switches over to alternate best path on route failure. Simulation results conducted show that proposed load splitting strategy is able to achieve improvement in performance in terms of reduced latency and improved throughput. Network Life time is also improved.

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Contention and Queue-Aware Routing Protocol for Mobile Ad Hoc Networks

Cited by 25 publications

References 11 publications

Review on Congestion Control Methods for Network Optimization in MANET

Review on Congestion Control Methods for Network Optimization in MANET

QoS Aware Multipath Threshold Routing for Mobile Ad hoc Networks

A Link Quality Based Dispersity Routing Algorithm for Mobile Ad Hoc Networks

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