Mobile ad hoc networks （MANETs） are gaining a lot of attention in research lately due to their importance in enabling mobile wireless nodes to communicate without any existing wired or predetermined infrastructures....Mobile ad hoc networks （MANETs） are gaining a lot of attention in research lately due to their importance in enabling mobile wireless nodes to communicate without any existing wired or predetermined infrastructures. Furthermore, in order to support the growing need for multimedia and realtime applications, quality of service （QoS） support by the networking protocol is required. Several important QoS parameters that are needed by such applications can be identified. They include bandwidth, end-to-end delay, delay jitter, and bit error rate. A good amount of research has been developed in this area covering different issues and challenges such as developing routing protocols that support bandwidth reservation and delay management. In this paper, the current state of research for QoS support in TDMA-based MANETs at different layers of the networking model is presented and categorized. In addition, the current issues and future challenges involved in this exciting area of research are also included.展开更多
移动A d hoc网络以其不依赖于任何预设的网络设施而能够临时快速自动组网的特点,在无线通信领域受到广泛关注.随着无线通信中多媒体业务的增加,需要在A d hoc网络中提供服务质量保证,而Q oS路由对实现网络服务质量起到非常关键的作用....移动A d hoc网络以其不依赖于任何预设的网络设施而能够临时快速自动组网的特点,在无线通信领域受到广泛关注.随着无线通信中多媒体业务的增加,需要在A d hoc网络中提供服务质量保证,而Q oS路由对实现网络服务质量起到非常关键的作用.文中通过分析现有的按需路由协议机制,提出一种基于能量的A d hoc网络带宽约束的Q oS路由协议.仿真结果表明该协议在中小型网络中能够较好地满足实时多媒体应用,同时具有较高的吞吐量和较低的能耗.展开更多
Purpose–The purpose of this paper is to propose a multi-objective differential evolution algorithm named as MOMR-DE to resolve multicast routing problem.In mobile ad hoc network(MANET),multicast routing is a non-dete...Purpose–The purpose of this paper is to propose a multi-objective differential evolution algorithm named as MOMR-DE to resolve multicast routing problem.In mobile ad hoc network(MANET),multicast routing is a non-deterministic polynomial-complete problem that deals with the various objectives and constraints.Quality of service(QoS)in the multicast routing problem mainly depends on cost,delay,jitter and bandwidth.So the cost,delay,jitter and bandwidth are always considered as multi-objective for designing multicast routing protocols.However,mobile node battery energy is finite and the network lifetime depends on node battery energy.Ifthe batterypowerconsumptionishigh inany one ofthe nodes,the chances ofnetwork’s lifereduction due to path breaks are also more.On the other hand,node’s battery energy had to be consumed to guarantee high-level QoS in multicast routing to transmit correct data anywhere and at any time.Hence,the network lifetime should be considered as one objective of the multi-objective in the multicast routing problem.Design/methodology/approach–Recently,many metaheuristic algorithms formulate the multicast routing problem as a single-objective problem,although it obviously is a multi-objective optimization problem.In the MOMR-DE,the network lifetime,cost,delay,jitter and bandwidth are considered as five objectives.Furthermore,three QoS constraints which are maximum allowed delay,maximum allowed jitter and minimum requested bandwidth are included.In addition,we modify the crossover and mutation operators to build the shortest-path multicast tree to maximize network lifetime and bandwidth,minimize cost,delay and jitter.Findings–Two sets of experiments are conducted and compared with other algorithms for these problems.Thesimulation results showthat our proposedmethod is capableof achieving faster convergence andis more preferable for multicast routing in MANET.Originality/value–In MANET,most metaheuristic algorithms formulate the multicast routing problem as a single-objective problem.However,this paper proposes a multi-objective differential evolution algorithm to resolvemulticast routingproblem,andthe proposed algorithmis capableof achieving faster convergence and more preferable for multicast routing.展开更多
近年来,QoS(Quality of Service)路由问题已成为Ad hoc网络的一个研究热点.本文提出一种按需的多径QoS路由协议—MTBP(Multipath Ticket Based Probing Routing Protocol).该协议能够在源节点和目的节点间找到多条满足QoS要求的路由.与...近年来,QoS(Quality of Service)路由问题已成为Ad hoc网络的一个研究热点.本文提出一种按需的多径QoS路由协议—MTBP(Multipath Ticket Based Probing Routing Protocol).该协议能够在源节点和目的节点间找到多条满足QoS要求的路由.与传统路由协议相比,本协议通过"票"限制洪泛,在链路断裂时采用备份路由及时恢复数据分组的传递,具有多路径传输、负载平衡、控制开销小等特点,能很好的适应无线移动自组织网中网络拓扑结构变化迅速,节点间移动速率快的特性.展开更多
文摘Mobile ad hoc networks （MANETs） are gaining a lot of attention in research lately due to their importance in enabling mobile wireless nodes to communicate without any existing wired or predetermined infrastructures. Furthermore, in order to support the growing need for multimedia and realtime applications, quality of service （QoS） support by the networking protocol is required. Several important QoS parameters that are needed by such applications can be identified. They include bandwidth, end-to-end delay, delay jitter, and bit error rate. A good amount of research has been developed in this area covering different issues and challenges such as developing routing protocols that support bandwidth reservation and delay management. In this paper, the current state of research for QoS support in TDMA-based MANETs at different layers of the networking model is presented and categorized. In addition, the current issues and future challenges involved in this exciting area of research are also included.
文摘移动A d hoc网络以其不依赖于任何预设的网络设施而能够临时快速自动组网的特点,在无线通信领域受到广泛关注.随着无线通信中多媒体业务的增加,需要在A d hoc网络中提供服务质量保证,而Q oS路由对实现网络服务质量起到非常关键的作用.文中通过分析现有的按需路由协议机制,提出一种基于能量的A d hoc网络带宽约束的Q oS路由协议.仿真结果表明该协议在中小型网络中能够较好地满足实时多媒体应用,同时具有较高的吞吐量和较低的能耗.
基金supported by the National Nature Science Foundation of China(No.61370185)Nature Science Foundation of Guangdong Province(No.2016A030313135)+3 种基金Guangdong Higher School Scientific Innovation Project(No.2013KJCX0174,2013KJCX0178,2014KTSCX188)the outstanding young teacher training program of the Education Department of Guangdong Province(YQ2015158)Guangdong Provincial Science and Technology Plan Projects(No.2016A010101034,2016A010101035)Guangdong Provincial High School of International and Hong Kong,Macao and Taiwan cooperation and innovation platform and major international cooperation projects(No.2015KGJHZ027).
文摘Purpose–The purpose of this paper is to propose a multi-objective differential evolution algorithm named as MOMR-DE to resolve multicast routing problem.In mobile ad hoc network(MANET),multicast routing is a non-deterministic polynomial-complete problem that deals with the various objectives and constraints.Quality of service(QoS)in the multicast routing problem mainly depends on cost,delay,jitter and bandwidth.So the cost,delay,jitter and bandwidth are always considered as multi-objective for designing multicast routing protocols.However,mobile node battery energy is finite and the network lifetime depends on node battery energy.Ifthe batterypowerconsumptionishigh inany one ofthe nodes,the chances ofnetwork’s lifereduction due to path breaks are also more.On the other hand,node’s battery energy had to be consumed to guarantee high-level QoS in multicast routing to transmit correct data anywhere and at any time.Hence,the network lifetime should be considered as one objective of the multi-objective in the multicast routing problem.Design/methodology/approach–Recently,many metaheuristic algorithms formulate the multicast routing problem as a single-objective problem,although it obviously is a multi-objective optimization problem.In the MOMR-DE,the network lifetime,cost,delay,jitter and bandwidth are considered as five objectives.Furthermore,three QoS constraints which are maximum allowed delay,maximum allowed jitter and minimum requested bandwidth are included.In addition,we modify the crossover and mutation operators to build the shortest-path multicast tree to maximize network lifetime and bandwidth,minimize cost,delay and jitter.Findings–Two sets of experiments are conducted and compared with other algorithms for these problems.Thesimulation results showthat our proposedmethod is capableof achieving faster convergence andis more preferable for multicast routing in MANET.Originality/value–In MANET,most metaheuristic algorithms formulate the multicast routing problem as a single-objective problem.However,this paper proposes a multi-objective differential evolution algorithm to resolvemulticast routingproblem,andthe proposed algorithmis capableof achieving faster convergence and more preferable for multicast routing.
文摘近年来,QoS(Quality of Service)路由问题已成为Ad hoc网络的一个研究热点.本文提出一种按需的多径QoS路由协议—MTBP(Multipath Ticket Based Probing Routing Protocol).该协议能够在源节点和目的节点间找到多条满足QoS要求的路由.与传统路由协议相比,本协议通过"票"限制洪泛,在链路断裂时采用备份路由及时恢复数据分组的传递,具有多路径传输、负载平衡、控制开销小等特点,能很好的适应无线移动自组织网中网络拓扑结构变化迅速,节点间移动速率快的特性.
