the power network fault detection system can only analyze all kinds of fault signal in stationary sequence： the internal grid and external disturbance presents degeneration, tiny, signal intensity changes randomly fl...the power network fault detection system can only analyze all kinds of fault signal in stationary sequence： the internal grid and external disturbance presents degeneration, tiny, signal intensity changes randomly fluctuate, that will cause the system to detect the fault isolation ability of confusion and small fault signal is not strong; The article propose a method of power network fault detection for based on GSM, Through the underlying sensing equipment acquisition abnormal information of current, voltage power in the network and GSM networking scheme can filter the interference factors in extraction of fault information from and attribute value. The embedded gateway take STM32 chip as the core to monitoring data processing, to achieve a unified data management and user remote access, realizing method of system software are given, to construct the monitor management information platform. The actual test system show that, identification diagnosis ability of fault signal separation ability and small signal increases 17%, also meet the requirements.展开更多
The developing mobile technologies have resulted in operators focusing on how to optimize their 2G networks and ensure a smooth network end, there are two approaches for upgrade: one core network with a 2G-radio netwo...The developing mobile technologies have resulted in operators focusing on how to optimize their 2G networks and ensure a smooth network end, there are two approaches for upgrade: one core network with a 2G-radio network, while the other is (Mobile Switching Center) with WCDMA MSCS (Mobile Gateway) to optimize the Core network hierararchy展开更多
雅万高铁作为中国技术、中国标准“走出去”的标志性海外项目,其承载网络(GSM-R)共用接口设备是铁路通信业务运营的重要支持,该设备包括域名解析服务器(DNS)、认证服务器(RADIUS)、通用分组无线业务(General Packet Radio Service,GPRS...雅万高铁作为中国技术、中国标准“走出去”的标志性海外项目,其承载网络(GSM-R)共用接口设备是铁路通信业务运营的重要支持,该设备包括域名解析服务器(DNS)、认证服务器(RADIUS)、通用分组无线业务(General Packet Radio Service,GPRS)接口服务器(GRIS)、GPRS归属服务器(GROS)、监测信息GPRS接口服务器(M-GRIS),在GSM-R网络中发挥着重要作用,是铁路应用系统与通信系统间重要桥梁和纽带。围绕雅万高铁共用接口设备的功能规划与设计结构展开,着重研究冗余热备、网管监测及告警、网络安全等技术实现方案,确保系统运行的安全性及稳定性。雅万高铁联调联试及成功开通运营的实践表明,GSM-R共用接口设备运行可靠,为中国高铁技术和标准在海外市场的推广提供了可借鉴的范例。展开更多
随着通信技术的不断发展,基于IP的Gb数据传输(简称Gb over IP)成为GSM-R网络的研究焦点。重点围绕GSM-R系统中BSC/PCU设备以Gb over IP方式接入核心网的方案开展研究,针对BSC/PCU与核心网设备异地设置时,BSC侧无法感知跨传输系统后链路...随着通信技术的不断发展,基于IP的Gb数据传输(简称Gb over IP)成为GSM-R网络的研究焦点。重点围绕GSM-R系统中BSC/PCU设备以Gb over IP方式接入核心网的方案开展研究,针对BSC/PCU与核心网设备异地设置时,BSC侧无法感知跨传输系统后链路中断,导致保护倒换机制未触发引起业务中断的问题,提出3种解决方案,并进行方案比选与优化,为GSM-R系统BSC/PCU设备以Gb over IP方式对接核心网方案提供操作指导及优化建议,以满足铁路移动通信系统多场景下的组网需求。展开更多
文摘the power network fault detection system can only analyze all kinds of fault signal in stationary sequence： the internal grid and external disturbance presents degeneration, tiny, signal intensity changes randomly fluctuate, that will cause the system to detect the fault isolation ability of confusion and small fault signal is not strong; The article propose a method of power network fault detection for based on GSM, Through the underlying sensing equipment acquisition abnormal information of current, voltage power in the network and GSM networking scheme can filter the interference factors in extraction of fault information from and attribute value. The embedded gateway take STM32 chip as the core to monitoring data processing, to achieve a unified data management and user remote access, realizing method of system software are given, to construct the monitor management information platform. The actual test system show that, identification diagnosis ability of fault signal separation ability and small signal increases 17%, also meet the requirements.
文摘The developing mobile technologies have resulted in operators focusing on how to optimize their 2G networks and ensure a smooth network end, there are two approaches for upgrade: one core network with a 2G-radio network, while the other is (Mobile Switching Center) with WCDMA MSCS (Mobile Gateway) to optimize the Core network hierararchy
文摘雅万高铁作为中国技术、中国标准“走出去”的标志性海外项目,其承载网络(GSM-R)共用接口设备是铁路通信业务运营的重要支持,该设备包括域名解析服务器(DNS)、认证服务器(RADIUS)、通用分组无线业务(General Packet Radio Service,GPRS)接口服务器(GRIS)、GPRS归属服务器(GROS)、监测信息GPRS接口服务器(M-GRIS),在GSM-R网络中发挥着重要作用,是铁路应用系统与通信系统间重要桥梁和纽带。围绕雅万高铁共用接口设备的功能规划与设计结构展开,着重研究冗余热备、网管监测及告警、网络安全等技术实现方案,确保系统运行的安全性及稳定性。雅万高铁联调联试及成功开通运营的实践表明,GSM-R共用接口设备运行可靠,为中国高铁技术和标准在海外市场的推广提供了可借鉴的范例。
文摘随着通信技术的不断发展,基于IP的Gb数据传输(简称Gb over IP)成为GSM-R网络的研究焦点。重点围绕GSM-R系统中BSC/PCU设备以Gb over IP方式接入核心网的方案开展研究,针对BSC/PCU与核心网设备异地设置时,BSC侧无法感知跨传输系统后链路中断,导致保护倒换机制未触发引起业务中断的问题,提出3种解决方案,并进行方案比选与优化,为GSM-R系统BSC/PCU设备以Gb over IP方式对接核心网方案提供操作指导及优化建议,以满足铁路移动通信系统多场景下的组网需求。
