针对现有分级多PAN太赫兹无线网络MAC(Medium Access Control)协议中存在的子网形成方案不合理以及私有CTA(Channel Time Allocation)与子网内实际负载不匹配等问题,提出了一种高效低时延的MAC层优化协议.该协议采用基于泛听的按需形成...针对现有分级多PAN太赫兹无线网络MAC(Medium Access Control)协议中存在的子网形成方案不合理以及私有CTA(Channel Time Allocation)与子网内实际负载不匹配等问题,提出了一种高效低时延的MAC层优化协议.该协议采用基于泛听的按需形成子网机制避免了子网分布不均匀以及因子网形成后没有节点加入而造成的私有CTA资源浪费的问题.在子网形成后,子微微网协调器(Piconet Coordinator,PNC)根据子网内实际负载情况自适应选择私有CTA时隙资源优化机制,让有数据传输需求的节点及时将数据发出.仿真结果表明,所提出的方案能有效地降低数据帧平均接入时延,提高吞吐量以及数据帧的传输成功率.展开更多
This Paper focuses on the formation of Pan-Asian trunk railway netWork. Pan-Asian trunk railways will be composed of two railway systems; one is the railway system linking up railways of 19 countries in Middle East, S...This Paper focuses on the formation of Pan-Asian trunk railway netWork. Pan-Asian trunk railways will be composed of two railway systems; one is the railway system linking up railways of 19 countries in Middle East, South Asia and Southeast Asia; the other is the cooperative railways system between countries. To realize Chinese railway network connecting with the railway networks of Eurasian countries is the prerequisite and guarantee for developing socialist market economy. The present transport capacity and the overall network level are too low to connect with Pan-Asian railway network, for example, the density of railway networks is low, the structure of airway networks is backward, the distribution of railway networks is unbalanced, etc. In order to match Pan-Asian trunk railway network, China must speed up railway construction, open some new ports, construct railway thoroughfare passing through China and neighboring展开更多
针对太赫兹无线个域网络中跨个域网(personal area network,PAN)通信存在的常规信道时间分配时段(normal channel time allocation period,N-CTAP)部分常规节点数据传输受干扰影响节点通信的成功率等问题,提出一种太赫兹网络的高效自适...针对太赫兹无线个域网络中跨个域网(personal area network,PAN)通信存在的常规信道时间分配时段(normal channel time allocation period,N-CTAP)部分常规节点数据传输受干扰影响节点通信的成功率等问题,提出一种太赫兹网络的高效自适应报告方法(efficient adaptive reporting approach of terahertz network,EARA-T)。该方法将常规节点细分为正常节点和边缘节点,在节点入网前及入网后将节点类型信息及时高效地报告给所在PAN的微微网控制器(piconet coordinator,PNC),以便于PNC在时隙分配上采取有效措施降低甚至消除网间干扰对数据传输的影响。通过使用OPNET软件进行仿真验证,相较于FDP协议和FCP协议,所提方法信息报告控制开销和时延的降低分别不少于14.1%和3.7%,信息报告成功率提高了0.4%。展开更多
通信技术迅速发展,为了更好地满足所有移动计算机和通讯设备的通讯需要,蓝牙特别兴趣小组(SIG)提出了一个新的概念———蓝牙个人区域网(Personal Area Networking)。分析了蓝牙个人区域网(PAN)的原理,同时提出基于蓝牙模块的蓝牙个人...通信技术迅速发展,为了更好地满足所有移动计算机和通讯设备的通讯需要,蓝牙特别兴趣小组(SIG)提出了一个新的概念———蓝牙个人区域网(Personal Area Networking)。分析了蓝牙个人区域网(PAN)的原理,同时提出基于蓝牙模块的蓝牙个人区域网的设计方案(包括协议的实现,数据的转发,模块的选择,整体的设计等)。展开更多
文摘This Paper focuses on the formation of Pan-Asian trunk railway netWork. Pan-Asian trunk railways will be composed of two railway systems; one is the railway system linking up railways of 19 countries in Middle East, South Asia and Southeast Asia; the other is the cooperative railways system between countries. To realize Chinese railway network connecting with the railway networks of Eurasian countries is the prerequisite and guarantee for developing socialist market economy. The present transport capacity and the overall network level are too low to connect with Pan-Asian railway network, for example, the density of railway networks is low, the structure of airway networks is backward, the distribution of railway networks is unbalanced, etc. In order to match Pan-Asian trunk railway network, China must speed up railway construction, open some new ports, construct railway thoroughfare passing through China and neighboring
文摘针对太赫兹无线个域网络中跨个域网(personal area network,PAN)通信存在的常规信道时间分配时段(normal channel time allocation period,N-CTAP)部分常规节点数据传输受干扰影响节点通信的成功率等问题,提出一种太赫兹网络的高效自适应报告方法(efficient adaptive reporting approach of terahertz network,EARA-T)。该方法将常规节点细分为正常节点和边缘节点,在节点入网前及入网后将节点类型信息及时高效地报告给所在PAN的微微网控制器(piconet coordinator,PNC),以便于PNC在时隙分配上采取有效措施降低甚至消除网间干扰对数据传输的影响。通过使用OPNET软件进行仿真验证,相较于FDP协议和FCP协议,所提方法信息报告控制开销和时延的降低分别不少于14.1%和3.7%,信息报告成功率提高了0.4%。
文摘通信技术迅速发展,为了更好地满足所有移动计算机和通讯设备的通讯需要,蓝牙特别兴趣小组(SIG)提出了一个新的概念———蓝牙个人区域网(Personal Area Networking)。分析了蓝牙个人区域网(PAN)的原理,同时提出基于蓝牙模块的蓝牙个人区域网的设计方案(包括协议的实现,数据的转发,模块的选择,整体的设计等)。
