Theoretical Studies on the Service Quality Evaluation and Optimal Resource Allocation in Mobile Communication Networks

移动通信网络服务质量评价与资源优化配置的理论研究

基本信息

批准号：
18500045
负责人：
TAKAGI Hideaki
金额：
$ 1.32万
依托单位：
University of Tsukuba
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2006
资助国家：
日本
起止时间：
2006 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18500045/
关键词：
Information networks Mobile radio networks Queues

项目摘要

(1) Methodology for calculating the requires spectrum for the next generation mobile radio communication systems Our proposal of the methodology and calculation results for estimating the spectrum requirements in IMT-Advanced systems was approved and accepted in the 2007 World Radiocommunication Conference. We have published the technical background and our research work in a book entitled Spectrum Requirement Planning in Wireless Communications from John Wiley and Sons (248 pages), 2008. Afterwards, we have developed a method that improves the spectrum usage, and calculated its effects based on a queuing model and simulation.(2) Calculation of the number of handovers and its application in cellular mobile communication networks In cellular mobile communication systems, the handover control is necessary when a mobile terminal moves from one cell to another for the channel allocation and location management. We have developed a theoretical model for estimating the number of handovers during one communication session using the theories of geometric probability and renewal process. The model has been applied to determine the optimal data update time for location management at the base stations in cellular mobile networks.(3) Models for evaluating the effects of time-varying traffic load on the performance of communication channels. Dynamic allocation of spectrum resource is desirable in future radio communication systems. Therefore, we have studied the time-dependent process in relevant stochastic models. We have also obtained an explicit expression for the probability density function of a busy period duration in a queue with a finite waiting room.

（1）用于计算下一代移动无线电通信系统需要频谱的方法，我们对估算IMT吸引系统中频谱要求的方法和计算结果的建议在2007年世界辐射通信会议上获得了批准和接受。我们已经在一本书中发表了技术背景和研究工作，该书的题为“来自John Wiley and Sons”（248页）的无线通信中的题为“频谱要求计划”（2008年）。之后，我们开发了一种方法来改善频谱使用情况，并基于行使交流和仿真计算的移动式移动式移动量计算，以计算其效果。终端从一个单元移到另一个单元，以进行通道分配和位置管理。我们已经开发了一个理论模型，用于使用几何概率和更新过程的理论来估计一次通信过程中的切换数。该模型已应用于确定蜂窝移动网络中基站位置管理的最佳数据更新时间。（3）评估交通量的交通负载对通信渠道性能的影响的模型。在未来的无线电通信系统中，频谱资源的动态分配是可取的。因此，我们研究了相关随机模型中的时间依赖性过程。我们还获得了有限候车室的队列中繁忙期间持续时间的概率密度函数的明确表达式。