QoS Routing For Mobile Ad Hoc Networks
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The main motivation of this work is to enable QOS based routing protocol and compare its performance with existing normal routing protocol in wireless ad hoc networks. Our results will illustrate how QOS enabled routing improves the consumption of resources, at the same time reducing the unnecessary signals, and avoiding all the irrelevant sessions that fail to satisfy QOS requirements. The performance of both the protocols is compared by using the information obtained from link layer. QOS enabled protocol shows a significant improvement in terms of QOS parameters that we applied such as protocol overhead and packet delay. The results thus achieved helped us to analyze our proposed mechanism, and add link layer information in control routing messages. Measuring bandwidth causes both the routing and QOS routing to react slowly to topology changes. Thus we plan to provide the QOS enabled routing service by employing the standard AODV protocol available under NS2.Keywords:
Zone Routing Protocol
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QoS routing has been a very important research issue in mobile ad hoc networks (MANETs). In this paper, we proposes a QoS-Aware routing protocol based on entropy (QARPE) for Mobile Ad Hoc Networks. QARPE can provide stable mutil-path routing strategy. The strategy adhibits the entropy metric to guarantee the stability and QoS conditions of selected routing. The paper adopts the following QoS conditions: delay, bandwidth and delay jitter. In order to reduce the number of route reconstructions as few as possible, QARPE provides a standby route. Therefore, when the main route is invalid, the source can transmit data by the standby routie.The simulation results shows that QARPE approach provides an accurate and efficient method with a stable multi-path and satisfies QoS constrains in MANETs.
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Multipath routing
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Routing protocols play an important role for communications in MANET. Multipath routing scheme can be distinguished because it can provide load balancing, fault-tolerance, and higher aggregate bandwidth. In this paper, a multipath source routing protocol with bandwidth and reliability guarantee is proposed. In routing discovery phase, the protocol selects several multiple alternate paths which meet the QoS requirements and the ideal number of multipath routing is achieved to compromise between load balancing and network overhead. In routing maintenance phase, it can effectively deal with route failures similar to DSR. Furthermore, the per-packet granularity is adopted in traffic allocation phase. Simulation results show that the proposed protocol remarkably increases the packet delivery rate and life-span of network with lower routing overhead. It will provide an effective solution for wireless communication.
Multipath routing
Zone Routing Protocol
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Zone Routing Protocol
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A Mobile Ad-hoc Network (MANET) is an infrastructure less and decentralized network which need a robust routing protocol. With the development of the MANET applications, more importance is given to Quality of Service (QoS) routing strategy. However mobility and congestion of the nodes lead to frequent link failures and packet losses affecting the QoS performance of the protocol. Taking these factors into account, we propose in this paper, a Stable Energy efficient QoS based Congestion and Delay aware Routing (SEQCDR) Protocol for effective QoS support. The protocol uses the multiple metrics of signal strength, queue length, drain rate and the delay in order to enhance the system performance. It provides effective load balancing at the node and finds a stable path between the source and destination meeting the delay requirement. Simulation results show that the proposed SEQCDR protocol outperforms AODV in terms of packet delivery ratio, throughput, routing overhead and average end to end delay.
Zone Routing Protocol
Path vector protocol
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With the prevalence of multimedia application, it has become a research focus to provide QoS in ad hoc mobile network However, current QoS routing protocols concentrate on finding a feasible path that satisfies QoS conditions and overlook path stability According to the features of ad hoc network, a QoS routing protocol PSQRP is proposed which is based on path stability The protocol selects a route in term of path stability and reduces the probability of link breakage It increases the request success ratio by using the technology of primary and secondary reservation The simulation results show that the protocol gains good performance in dynamic network environment
Path vector protocol
Zone Routing Protocol
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QoS routing is a kind of important means to provide QoS guarantee for Ad Hoc networks.Most QoS routing protocols are built on a uni-path and can't make full use of the resources in Ad Hoc networks.In addition,the energy of nodes in the network is also the main factor of the performance of the network.However,the existing QoS routing protocol rarely considers limited energy in network nodes.In this paper,propose a multi-path routing protocol under the constraints of energy based on DSR routing protocol(MPQE).The protocol mainly considers bandwidth and the surplus energy to choose multiple QoS routings.The simulation results show that MPQE protocol improves the throughput ratio,reduces the delay and extends the network life.
Zone Routing Protocol
Path vector protocol
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The characteristics of ad hoc networks make the QoS support a very complex process unlike traditional networks. The nodes in ad hoc wireless networks have limited power capabilities. The node failure in the network leads to different problems such as network topology changes, network partitions, packet losses and low signal quality. Many QoS routing protocols like Predictive location based QoS routing protocol (PLBQR), Ticket based QoS routing, Trigger based distributed QoS routing (TDR) protocol ,Bandwidth routing(BR) protocol, Core extracted distributed routing (CEDAR) protocol have been proposed. However these algorithms do not consider the node failures and their consequences in the routing. Thus most of the routing protocols do not perform well in frequent or unpredictable node failure conditions. Node Failure Predication QoS Routing” (NFPQR) scheme provides an optimal route selection by predicting the possibility of failure of a node through its power level. The NFPQR protocol has been modified as C-NFPQR (Clustered NFPQR) in order to provide power optimization using clustered based approach. The performance of the NFPQR and C-NFPQR is evaluated through the same QoS parameters.
Zone Routing Protocol
Interior gateway protocol
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A routing protocol, in Cognitive Radio Network (CRN), is a new concept to improve performance in this network. It is used to establish correct and efficient route between two nodes. OLSR (Optimized Link State Routing) protocol is an optimization of the classical link state protocol in Ad Hoc Networks. We introduce the QoS (Quality of Service) routing mechanism for OLSR protocol, QOLSR (QoS OLSR). We use some metrics measurements to improve quality constrains in routing information. In this work, we present an efficient routing solution, Cognitive routing protocol named CO-QOLSR (Cognitive-QoS Optimized Link State Routing). It is based on the traditional OLSR protocol. The utilization of CO-QOLSR protocol gives an important performance in terms of delay, bandwidth. It is evaluated by OPNET 14.5 Simulator. Simulation results show that our proposal approach represent an important improvement in such mobile wireless networks in terms of QoS performance.
Zone Routing Protocol
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This paper discusses the multicast routing problem with multiple QoS constraints, which may deal with the delay, bandwidth and packet loss measurements, and describes a network model for researching the Ad Hoc network QoS multicast routing problem. It presents a complete solution for QoS routing based on an extension of the MAODV routing protocol that deals with delay, bandwidth and packet loss measurements. The solution is based on lower layer specifics. Simulation results show that, with the proposed QoS Multicast routing protocol, end-to-end delay and bandwidth on a route can be improved in most of cases. It is an available approach to multicast routing decision with multiple QoS constraints.
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