Electric vehicles (EVs) are an emerging type of mobile intelligent power consumption devices in Smart Grid as new green transport tools. In order to provide a powerful automation and intelligence support for wide area...Electric vehicles (EVs) are an emerging type of mobile intelligent power consumption devices in Smart Grid as new green transport tools. In order to provide a powerful automation and intelligence support for wide area electric vehicles energy service network, we analyze the network infrastructure and communications demands of various terminals, devices and monitoring systems distributed in wide area electric vehicle energy service network. According to interactive user services scenarios and energy operations intelligent monitoring, we propose multimode communication integration architecture for wide area electric vehicle energy service network by means of the fusion of the Internet of Things (IoT) technology. Then, we design different networking schemes in access networks and backbone transmission networks meeting multi-scene and multi-operation interaction requirements. The networking schemes will provide efficient technical support to implement intelligent, cross-regional, interactive energy services for electric vehicle users.展开更多
随着广域物联网(Internet of things,IoT)的出现,为了在广阔地理区域上实现无缝连接的需求,提出了一种新型的去蜂窝非地面-地面混合网络。该系统利用非地面网络(non-terrestrial network,NTN)设备的2种不同部署模式实现了广域物联网的...随着广域物联网(Internet of things,IoT)的出现,为了在广阔地理区域上实现无缝连接的需求,提出了一种新型的去蜂窝非地面-地面混合网络。该系统利用非地面网络(non-terrestrial network,NTN)设备的2种不同部署模式实现了广域物联网的全球覆盖,其中NTN设备既可以作为无线接入点又可以作为无线中继。针对2种部署模式分析了2者的区别,并分别提出其相应的部署场景。随后通过案例分析,评估了所提方案的可行性,表明了它可以提高系统的能量效率和通信效率。通过所提方案,系统提高了超过7倍的能量效率和通信效率。最后对其面临的机遇、挑战以及未来研究方向进行了讨论和展望。展开更多
重载铁路物联网设备在列车状态监测、轨道完整性检测及故障预警中广泛应用,对远距离、低功耗、高可靠通信提出了严格要求。通过分析重载铁路通信需求,研究远距离无线电(Long Range Radio,LoRa)、窄带物联网(Narrow Band Internet of Thi...重载铁路物联网设备在列车状态监测、轨道完整性检测及故障预警中广泛应用,对远距离、低功耗、高可靠通信提出了严格要求。通过分析重载铁路通信需求,研究远距离无线电(Long Range Radio,LoRa)、窄带物联网(Narrow Band Internet of Things,NB-IoT)、Sigfox等主流低功耗广域网(Low-Power Wide-Area Network,LPWAN)协议的技术特点与适配性,提出多信道自适应调制、分层分簇节点接入、混合传输、低功耗休眠调度及抗干扰链路冗余等优化策略,实现通信效率与功耗的动态平衡。展开更多
基于蜂窝的物联网连接由于设备功耗大、部署成本高等劣势,目前在移动网络上承载的物联网连接只占到总数的6%。以NB-IoT(Narrow-Band Internet of Things)为代表的低功耗广域网(Low Power Wide Area,LPWA)具有低成本、广覆盖的特点,在未...基于蜂窝的物联网连接由于设备功耗大、部署成本高等劣势,目前在移动网络上承载的物联网连接只占到总数的6%。以NB-IoT(Narrow-Band Internet of Things)为代表的低功耗广域网(Low Power Wide Area,LPWA)具有低成本、广覆盖的特点,在未来低速率物联网业务中扮演着重要角色。文章从标准化进展、频率部署方式等方面对NB-loT技术进行分析,给出中国联通窄带物联网的网络架构和部署方案,为中国联通NB-IoT的内外场测试及商用部署提供参考。展开更多
文摘Electric vehicles (EVs) are an emerging type of mobile intelligent power consumption devices in Smart Grid as new green transport tools. In order to provide a powerful automation and intelligence support for wide area electric vehicles energy service network, we analyze the network infrastructure and communications demands of various terminals, devices and monitoring systems distributed in wide area electric vehicle energy service network. According to interactive user services scenarios and energy operations intelligent monitoring, we propose multimode communication integration architecture for wide area electric vehicle energy service network by means of the fusion of the Internet of Things (IoT) technology. Then, we design different networking schemes in access networks and backbone transmission networks meeting multi-scene and multi-operation interaction requirements. The networking schemes will provide efficient technical support to implement intelligent, cross-regional, interactive energy services for electric vehicle users.
文摘随着广域物联网(Internet of things,IoT)的出现,为了在广阔地理区域上实现无缝连接的需求,提出了一种新型的去蜂窝非地面-地面混合网络。该系统利用非地面网络(non-terrestrial network,NTN)设备的2种不同部署模式实现了广域物联网的全球覆盖,其中NTN设备既可以作为无线接入点又可以作为无线中继。针对2种部署模式分析了2者的区别,并分别提出其相应的部署场景。随后通过案例分析,评估了所提方案的可行性,表明了它可以提高系统的能量效率和通信效率。通过所提方案,系统提高了超过7倍的能量效率和通信效率。最后对其面临的机遇、挑战以及未来研究方向进行了讨论和展望。
文摘重载铁路物联网设备在列车状态监测、轨道完整性检测及故障预警中广泛应用,对远距离、低功耗、高可靠通信提出了严格要求。通过分析重载铁路通信需求,研究远距离无线电(Long Range Radio,LoRa)、窄带物联网(Narrow Band Internet of Things,NB-IoT)、Sigfox等主流低功耗广域网(Low-Power Wide-Area Network,LPWAN)协议的技术特点与适配性,提出多信道自适应调制、分层分簇节点接入、混合传输、低功耗休眠调度及抗干扰链路冗余等优化策略,实现通信效率与功耗的动态平衡。
文摘基于蜂窝的物联网连接由于设备功耗大、部署成本高等劣势,目前在移动网络上承载的物联网连接只占到总数的6%。以NB-IoT(Narrow-Band Internet of Things)为代表的低功耗广域网(Low Power Wide Area,LPWA)具有低成本、广覆盖的特点,在未来低速率物联网业务中扮演着重要角色。文章从标准化进展、频率部署方式等方面对NB-loT技术进行分析,给出中国联通窄带物联网的网络架构和部署方案,为中国联通NB-IoT的内外场测试及商用部署提供参考。
