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Channel Aware opportunistic routing in Multi-Radio Multi-Channel Wireless Mesh Networks

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Journal of Computer Science & Technology 2014年第3期29卷 487-501页

作者：何施茗张大方谢鲲乔宏张继 College of Computer Science and Electronics Engineering Hunan University

opportunistic routing （OR） involves multiple candidate forwarders to relay packets by taking advantage of the broadcast nature and multi-user diversity of the wireless medium. Compared with traditional routing （TR）, OR is more suitable for the unreliable wireless link, and can evidently improve the end to end throughput. At present, there are many achievements concerning OR in the single radio wireless network. However, the study of OR in multi-radio wireless network stays the beginning stage. To demonstrate the benefit of OR in multi-radio multi-channel network, we propose a new route metric -- multi-channel expected anypath transmission time （MEATT）, which exploits the channel diversity and resource of multiple candidate forwarders for OR. Based on the new metric, a distributed Mgorithm named Channel Aware opportunistic routing （CAOR） is proposed. The simulation results demonstrate that MEATT improves 1.14 and 1.53 times of the average throughput than existing expected anypath transmission time （EATT）and metric of interference and channel switching cost （MIC） respectively. The average delay of MEATT is 17% and 40% lower than those of EATT, MIC, respectively.

关键词： wireless mesh network multi-radio multi-channel opportunistic routing

Throughput oriented forwarders selection analysis for opportunistic routing in wireless mesh network

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The Journal of China Universities of Posts and Telecommunications 2013年第2期20卷 73-78页

作者： DU Xiao LIU Yuan-an LIU Kai-ming TANG Bi-hua CHEN Xing School of Electronic Engineering Beijing University of Posts and Telecommunications

opportunistic routing explicitly takes advantage of the broadcast nature of wireless communications by using a set of forwarders to opportunistically perform packet forwarding. A key issue in the design of opportunistic routing protocols is the forwarder list selection problem. This paper proposes a novel routing metric which shows the end-to-end throughput and a corresponding throughput oriented opportunistic routing forwarder-selecting algorithm throughput oriented forwarders selection （TOFS） through analyzing forwarding characteristics of forwarders. The algorithm puts forward a constraint mechanism that controls the number of forwarders by constraint of throughput for forwarders selection, achieving a better balance between number of forwarders and effective link stability by introducing the factor of transmission time. Simulation results show that the algorithm can improve the network end-to-end throughput effectively over existing methods.

关键词： wireless mesh networks (WMN) opportunistic routing throughput delivery probability

Novel Energy-Efficient opportunistic routing Protocol for Marine Wireless Sensor Networks Based on Compressed Sensing and Power Control

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Journal of Ocean University of China 2022年第6期21卷 1504-1516页

作者： XIAN Jiangfeng WU Huafeng MEI Xiaojun ZHANG Yuanyuan CHEN Xinqiang ZHANG Qiannan LIANG Linian Institute of Logistics Science and Engineering Shanghai Maritime UniversityShanghai 201306China Merchant Marine College Shanghai Maritime UniversityShanghai 201306China College of Information Engineering Shanghai Maritime UniversityShanghai 201306China Institute of Atmospheric Sciences&Department of Atmospheric and Oceanic Sciences Fudan UniversityShanghai 200438China

In marine wireless sensor networks(MWSNs),an appropriate routing protocol is the key to the collaborative collection and efficient transmission of massive ***,designing an appropriate routing protocol under the condition of sparse marine node deployment,highly dynamic network topology,and limited node energy is ***,the absence of continuous endto-end connection introduces further difficulties in the design of routing *** this case,we present a novel energy-efficient opportunistic routing(Novel Energy-Efficient opportunistic routing,NEOR)protocol for MWSNs that is based on compressed sensing and power ***,a lightweight time-series prediction method-weighted moving average method is proposed to predict the packet advancement value such that the number of location information that is exchanged among a node and its neighbor nodes can be ***,an adaptive power control mechanism is presented to determine the optimal transmitting power and candidate nodeset on the basis of node mobility,packet advancement,communication link quality,and remaining node ***,a timer-based scheduling algorithm is utilized to coordinate packet forwarding to avoid packet ***,we introduce the compressed sensing theory to compress perceptual data at source nodes and reconstruct the original data at sink ***,energy consumption in the MWSNs is greatly reduced due to the decrease in the amount of data perception and *** simulation experiments are carried out in a wide range of marine scenarios to verify the superiority of our approach over selected benchmark algorithms.

关键词： marine wireless sensor networks opportunistic routing weighted moving average adaptive power control compressed sensing

Road traffic and geography topology based opportunistic routing for VANETs

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The Journal of China Universities of Posts and Telecommunications 2014年第2期21卷 32-39页

作者： DING Yu LIU Ya-zhi GONG Xiang-yang WANG Wen-dong State Key Laboratory of Networking and Switching technology Beijing University of Posts and Telecommunications College of Information Hebei United University

The message delivery .ratio and transmission delay is affected deeply by road traffic flow in vehicular ad hoc networks （VANETs）. An opportunistic routing based on geography and road traffic flow for VANETs （ORRIS） was proposed. ORRIS leverages the knowledge of geography positions, motion vectors and road traffic flows. In order to estimate the traffic flow density, the history of encounter number of the vehicles in the opposite direction is considered in ORRIS. The forwarding decisions are made by distributed vehicles based on the geography topology and the road traffic flow. The real map based simulation results show that ORRIS has a better performance than other algorithms, especially when the road traffic is busy or the traffic flow rates have great differences between roads.

关键词： VANETs traffic flow opportunistic routing geography topology

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Graph partitioning algorithm for opportunistic routing in large-scale wireless network

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The Journal of China Universities of Posts and Telecommunications 2009年第4期16卷 42-46页

作者： LI Yan-hua LIU Yuan-an Wireless Communication Center Beijing University of Posts and Telecommunications Beijing 100876 China

opportunistic routing takes advantage of the broadcast nature of wireless communications by forwarding data through a set of opportunistic paths instead of one ＇best＇ path in traditional routing. However, using the global scheduling opportunistic scheme like the existing opportunistic routing protocol （ExOR） would consume considerable transmission latency and energy in large-scale wireless topologies. In this article, a graph partitioning algorithm is proposed, namely, minimum cut with laplacians （MCL）, to divide the Ad-hoc network topology into subgraphs with minimized edge cuts across them. Then the existing opportunistic routing can be applied locally in each subgraph. In this way, forwarders in different subgraphs can transmit simultaneously, and each node only needs to maintain a local forwarder list instead of a global one. The simulations show that using MCL scheme in the opportunistic routing can reduce the end-to-end delay by about 49%, and increase the life time of the wireless node by about 39%.

关键词： opportunistic routing graph partitioning wireless routing mobile Ad-hoc network

POWER CONTROL BASED COOPERATIVE opportunistic routing IN WIRELESS SENSOR NETWORKS

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Journal of Electronics(China) 2009年第1期26卷 52-63页

作者： Hu Haifeng Zhu Qi Jiangsu Key Laboratory of Wireless Communications Nanjing University of Posts and Telecommunications Nanjing 210003 China National Mobile Communications Research Laboratory Southeast University Nanjing 210003 China

This paper proposes an approach called PC-CORP (Power Control based Cooperative opportunistic routing Protocol) for WSN (Wireless Sensor Networks), providing robustness to the random variations in network connectivity while ensuring better data forwarding efficiency in an energy efficient manner. Based on the realistic radio model, we combine the region-based routing, rendezvous scheme, sleep discipline and cooperative communication together to model data forwarding by cross layer design in WSN. At the same time, a lightweight transmission power control algorithm called PC-AIMD (Power Control Additive Increase Multiplicative Decrease) is introduced to utilize the co- operation of relay nodes to improve the forwarding efficiency performance and increase the robustness of the routing protocol. In the simulation, the performance of PC-COPR is investigated in terms of the adaptation of variations in network connectivity and satisfying the QoS requirements of application.

关键词： Cooperative opportunistic routing Power control Wireless Sensor Networks (WSN)

Design of opportunistic routing Based on Markov Decision Process 36

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Design of Opportunistic Routing Based on Markov Decision Pro...

High Delivery Performance opportunistic routing Scheme for Delay Tolerant Networks

第36届中国控制会议

作者： Jun Hao Xinchun Jia Zongyuan Han Bo Yang Dengyong Peng School of Mathematical Sciences Shanxi University Institute of Computing Technologies China Academy of Railway Sciences

ISBN: (纸本)9781538629185

The instability of wireless links makes the choice of forwarding nodes have too many possibilities in opportunistic *** this paper,the Markov decision process（MDP） is used to model the whole packet forwarding process from the source node to the destination node,which facilitates making reasonable decisions when the sender selects the forwarding *** solving a finite-state MDP problem,an optimal forwarding strategy is obtained to minimize the expected number of transmissions for each *** more,the properties of expected any-path transmissions（EAX） are used for the selection of candidate forwarder set,which can significantly reduce the feasible optimal solution ***,An opportunistic routing protocol based on Markov decision process（MDP-OR） is designed,whose effectiveness is verified by an example and its simulation.

关键词： opportunistic routing Markov Decision Process Optimal Forwarding Strategy

来源： cnki会议评论

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China Communications 2012年第6期9卷 145-153页

作者： Lu Xiaofeng Pan Hui Pietro Lio Beijing University of Posts and Telecommunications Beijing 100876 P. R. China Deutsche Telekom Laboratories and TU-Berlin Berlin Germany University of Cambridge Cambridge CB3 0FD UK

In Delay Tolerant Networks (DTNs), establishing routing path from a source node to a destination node may not be possible, so the opportunistic routings are widely used. The energy and buffer constraints are general in DTNs composed of the mobile phones or Pads. This paper proposes a novel opportunistic routing protocol, denoted by Large Opporturioty (LAOP), for the energy and buffer constrained DTNs. The objective of LAOP is to reach many receivers of a message with a small number of transmissions. By LAOP, the sender floods a message when the number of its neighbors is not less than a threshold. We compare the delivery performance of LAOP with other four widely used Delay or Disruption Tolerant Network (DTN) routing protocols, Direct Delivery, Epidemic routing, SprayAndWait and PRoPHET and demonstrate that LAOP can improve the delivery performance and decrease the delivery latency simultaneously.

关键词： computer networks DTNs LAOP opportunistic routing

Reclaiming the Efficiency of opportunistic routing in Wireless Multi-Hop Networks

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China Communications 2014年第8期11卷 145-156页

作者： WANG Dongyang WU Muqing WANG Hengyou LAI Xiaoyang LV Bo Beijing University of Posts and Telecommunications Beijing 100876 P. R. China Datang Linktech Infosystem Co. Ltd. Beijing 100080 P. R. China

opportunistic routing(OR) is an effective way to guarantee transmission reliability in wireless multi-hop ***,little research focuses on transmission ***,an analytical model based on open queuing network with Markov chains was proposed to evaluate the *** analyzing two typical ORs,we find duplicate transmission and collision avoidance overhead are the root reasons behind ***,a new scheme called dual priority cooperative opportunistic routing(DPCOR) was *** DPCOR,forwarding candidates are configured with dual priority,which enables the network to classify forwarding candidates more effectively so as to reduce the back-off time and obtain more diversity *** analysis and simulation results show DPCOR achieves significant performance improvement with less time overhead compared with traditional routings and typical ORs.

关键词： opportunistic routing openqueuing network with Markov chains efficiency duplicate transmission