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Base Station Allocation Policies for Mobile Communication System Considering Service Area Characteristics

考虑服务区特点的移动通信系统基站分配策略

基本信息

批准号：
15510120
负责人：
YAMADA Takako
金额：
$ 2.11万
依托单位：
The University of Electro-Communications
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2004
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15510120/
关键词：
Mobile Communication Simulation Performance Evaluation Base Station User Behavior Queueing Model Pedestrian Urban Space

项目摘要

Mobile phone networks are considered as one of the important infrastructures in our society. In cellular services, resource provided by a single base station is limited and the channel exhaustion in crowded cells is more frequent than in the cells with less number of users. Thus the accurate estimation for traffic demands in the service area is of great help for the base station allocation. The previous researches, performance evaluation are discussed analytically to evaluate the stochastic characteristics of channel occupancy time. We present a simulation system to model mobile user behavior in urban space including roads, railways, railway stations and traffic signals. This simulation system are made to analyze actual user situations which we can't deal analytical models, such as moving behavior of mobile users along roads, their group arrivals and departures by railways at stations. We observe mobile traffic, which changes with mobile user distribution and discuss the base station l … More ocation policy. By this simulation system, we observe several cell location patterns in a service area. In our simulation system, we can deal with arrival of group users at stations and crosswalks,・spatial distribution of users, moving users along roads and buildings and fluctuation of these distributions from time to time,・call retrials which arrive independently after preceding call failures.We developed pedestrian model in urban space considering congestions in downtown at crosswalks with traffic signals and stations. The variations of users with different call behavior features and moving types are generated by given scenarios written in a simple macro-language developed for this system. By use of scenarios, the simulation gets enough flexibility to deal with various situations easily. Our simulation system has a simple editor to draw road maps with signals and railway stations. This editor is also used to allocate base stations in a service area map to examine variations of cell location patterns with different number of channels. A graphical user interface and visualization system show user moving on the roads and helps us to understand how the simulation works and the traffic fluctuations in cells in a service area. By using this system, the group arrival of users by commuter train causes estimation error in call loss probability. As analytical evaluations for mobile communication networks, bounds for call completion probabilities in large-scale mobile communication networks by decomposition type approximation methods is discussed by Takahashi and Katou dealed with upper bound for the decay rate of the marginal queue-length distribution in a two-node Markovian queueing system which are also useful for exact estimation for performance evaluations for mobile communication systems. Less

移动的电话网络被认为是我们社会的重要基础设施之一。在蜂窝业务中，单个基站提供的资源是有限的，并且拥挤小区中的信道耗尽比用户数量较少的小区中更频繁。因此，准确估计服务区域内的业务需求对基站的配置有很大的帮助。分析了信道占用时间的随机特性，并对已有的性能评估方法进行了讨论。我们提出了一个模拟系统，以模拟移动的用户在城市空间中的行为，包括道路，铁路，火车站和交通信号。该仿真系统是为了分析实际的用户情况，我们不能处理的分析模型，如移动的用户的移动行为，沿着道路，他们的群体到达和离开的铁路车站。我们观察了移动的业务量，它随移动的用户分布而变化，并讨论了基站 ...更多信息位置政策。通过这个模拟系统，我们观察了几个小区的位置模式在一个服务区。在我们的模拟系统中，我们可以处理到达车站和人行横道的群体用户，·用户的空间分布，移动用户沿沿着道路和建筑物和波动这些分布的时间到时间，·呼叫重试后，独立到达前一个呼叫失败。我们开发了行人模型在城市空间考虑行人在市中心的人行横道与交通信号和车站。不同的呼叫行为特征和移动类型的用户的变化产生的给定的场景中编写的一个简单的宏语言开发的本系统。通过使用场景，仿真得到了足够的灵活性，可以轻松地处理各种情况。我们的模拟系统有一个简单的编辑器来绘制带有信号和火车站的道路图。此编辑器也用于在服务区地图中分配基站，以检查具有不同数量的信道的小区位置模式的变化。图形用户界面和可视化系统显示用户在道路上移动，并帮助我们了解模拟如何工作以及服务区中单元格的交通波动。通过使用该系统，通勤列车的用户群到达导致呼叫丢失概率的估计误差。作为对移动的通信网络的分析评价，Takahashi和Katou用分解型近似方法讨论了大规模移动的通信网络中呼叫接通概率的界，并讨论了两节点马尔可夫系统中边际长度分布衰减率的上界，这对移动的通信系统性能评价的精确估计也是有用的。少