This paper investigated the growth and policy implications of Global System for Mobile Communication in Nigeria. Stochastic economic modeling was used to analyze Nigeria＇s time series data. The models were adjudged r...This paper investigated the growth and policy implications of Global System for Mobile Communication in Nigeria. Stochastic economic modeling was used to analyze Nigeria＇s time series data. The models were adjudged reliable before they were used. The components of the model were defined and a prior expectation of the relationship among the variables explained for the purpose of giving the reviewers and users a deep insight into the phenomenon under study. The secondary data used for the study were processed using the E-View for windows electronic packages. The outcome of the empirical and stochastic investigations shows that Global System for Mobile Communication has a positive relationship with output growth in Nigeria. The impact is of a higher magnitude. The usage of Global System for Mobile Telecommunication led to 17 percent rise in the output growth. The findings suggest the need for the Nigerian Communication Commission （NCC） and the federal government of Nigeria to expand tele-density and directly make telephone communications cheap and accessible. To achieve this goal, more licenses should be given to GSM operators in order to allow for healthy competition among them. This will lead to improved quality of services, quality of product and consequently sustain the growth and development of the country.展开更多
针对当前GSM-R车载空口监测面临缺乏分组域和无线电频谱监测,以及数据格式不统一等问题,通过对既有车载侧和基站侧的空口监测技术的深化研究,采用高速移动跟踪、软件无线电、动态流控和数据分类处理技术,设计开发GSM-R车载空口综合监测...针对当前GSM-R车载空口监测面临缺乏分组域和无线电频谱监测,以及数据格式不统一等问题,通过对既有车载侧和基站侧的空口监测技术的深化研究,采用高速移动跟踪、软件无线电、动态流控和数据分类处理技术,设计开发GSM-R车载空口综合监测系统(简称空口监测系统)。从系统组成、功能实现、关键技术、应用案例等方面展开介绍,说明采集设备、频谱监测、电路域业务监测和分组域业务监测组成、定义、实现和应用。空口监测系统是补强G S M-R网络空口运用质量和性能监测的重要手段,可有效提升铁路列控业务故障分析整治和隐患排查能力,具有广阔的实际应用价值和前景。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This paper investigated the growth and policy implications of Global System for Mobile Communication in Nigeria. Stochastic economic modeling was used to analyze Nigeria＇s time series data. The models were adjudged reliable before they were used. The components of the model were defined and a prior expectation of the relationship among the variables explained for the purpose of giving the reviewers and users a deep insight into the phenomenon under study. The secondary data used for the study were processed using the E-View for windows electronic packages. The outcome of the empirical and stochastic investigations shows that Global System for Mobile Communication has a positive relationship with output growth in Nigeria. The impact is of a higher magnitude. The usage of Global System for Mobile Telecommunication led to 17 percent rise in the output growth. The findings suggest the need for the Nigerian Communication Commission （NCC） and the federal government of Nigeria to expand tele-density and directly make telephone communications cheap and accessible. To achieve this goal, more licenses should be given to GSM operators in order to allow for healthy competition among them. This will lead to improved quality of services, quality of product and consequently sustain the growth and development of the country.
文摘针对当前GSM-R车载空口监测面临缺乏分组域和无线电频谱监测,以及数据格式不统一等问题,通过对既有车载侧和基站侧的空口监测技术的深化研究,采用高速移动跟踪、软件无线电、动态流控和数据分类处理技术,设计开发GSM-R车载空口综合监测系统(简称空口监测系统)。从系统组成、功能实现、关键技术、应用案例等方面展开介绍,说明采集设备、频谱监测、电路域业务监测和分组域业务监测组成、定义、实现和应用。空口监测系统是补强G S M-R网络空口运用质量和性能监测的重要手段,可有效提升铁路列控业务故障分析整治和隐患排查能力,具有广阔的实际应用价值和前景。
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。
