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WSN应用层协议MQTT-SN与CoAP的剖析与改进 被引量:10
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作者 陈旖 张美平 许力 《计算机系统应用》 2015年第2期229-234,共6页
针对WSN网络通讯中急需适合其特点的应用层通讯协议的问题,剖析了两种主流的WSN应用层通讯协议并做出改进.通过剖析应用层通讯协议MQTT-SN与Co AP的设计理念与工作机制,展示了协议性能与适用的场景的差异.借助Co AP的优点进一步提出了MQ... 针对WSN网络通讯中急需适合其特点的应用层通讯协议的问题,剖析了两种主流的WSN应用层通讯协议并做出改进.通过剖析应用层通讯协议MQTT-SN与Co AP的设计理念与工作机制,展示了协议性能与适用的场景的差异.借助Co AP的优点进一步提出了MQTT-SN的改进方案,使之适合于点对点通讯与大块数据传输的情况. 展开更多
关键词 WSN网络 MQTT-SN协议 CoAP协议 订阅/发布模型
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HHR:Hierarchical Hybrid Routing Scheme for Information-Centric Network
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作者 DUAN Jie WANG Xiong +1 位作者 WANG Sheng XU Shizhong 《China Communications》 SCIE CSCD 2015年第6期141-153,共13页
Publish/subscribe(pub/sub) paradigm is the main communication model for Information-Centric Network(ICN) proposals.A key issue for pub/sub system is how to route the content objects to the correct subscribers,and ICN ... Publish/subscribe(pub/sub) paradigm is the main communication model for Information-Centric Network(ICN) proposals.A key issue for pub/sub system is how to route the content objects to the correct subscribers,and ICN is no exception.ICN network would be divided into core domain and many edge domains as today's internet does.HHR(Hierarchy Hybrid Routing scheme) is presented for ICN:A Chord-like routing scheme is used in core domain,while edge domains routing structure can be classified into three categories,Local Routing(LR),Delivery of Local Publication to Core domain(DLPC),and Remote Publication Routing into edge domain(RPR).LR can be decided by each edge domain,which determined by many factors,such as locality characteristic for pub/sub information and local policies.A hierarchical routing algorithm is proposed to solve DLPC and RPR simultaneously.Simulation results demonstrate that HHR can be fast deployed,and can be applied in large scale network or dynamic subscription environment. 展开更多
关键词 Information-Centric Network(ICN) publish/subscribe paradigm hierarchi-cal hybrid routing scheme (HHR) CHORD
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