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Channel Assignment of Digital Cellular Systems with 2- or 3-dimensional Cell Structure

具有 2 维或 3 维小区结构的数字蜂窝系统的信道分配

基本信息

批准号：
04650281
负责人：
SENGOKU Masakazu
金额：
$ 1.28万
依托单位：
Niigata University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1992
资助国家：
日本
起止时间：
1992 至 1993
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04650281/
关键词：
Mobile Communication Car Telephone Portable Telephone Portable Terminal Cellular System Channel Assignment Neural Network Communication Traffic セルラー方式セルラー方式,

项目摘要

The demand for mobile communication services is rapidly increasing, because the mobile communication service is synonymy of an ideal communication style realizing communication in anytime, anywhere and with anyone. The development of economic and social activities is a primary factor of the increasing demand for mobile communication services. The demand stimulates the development of technology in mobile communication including personal communication services. Thus mobile communication has been one of the most active research in communications in the last several years.In cellular mobile communication systems, the service area is divided into many small cells and each channel is re-used in some cells, simultaneously. Channel assignment methods affect the system capacity and they are classified into fixed channel assignment and dynamic channel assignment. In general, dynamic channel assignment gives better performance than fixed channel assignment. However, it is difficult to obtain the soulution in a practical time when dynamic channel assignment is applied to the cellular system. Therefore, it is one of the most important problems to find the algorithms in a cellular system. We obtain following results in this year.1. We propose a dynamic channel assignment algorithm using neural networks. The channel assignment scheme in this algorithm takes the degree of interference into consideration.2. We propose a 3-dimensional cell structure model and apply some traditional channel assignment algorithms to this model.3. We analyze the lower bound of the blocking propagation dynamic channel assignment.

对移动的通信服务的需求正在迅速增加，因为移动的通信服务是实现随时随地与任何人通信的理想通信方式的同义词。经济和社会活动的发展是对移动的通信服务的需求不断增长的主要因素。该需求刺激了包括个人通信服务的移动的通信中的技术的发展。在蜂窝移动的通信系统中，服务区域被划分为许多小小区，并且每个信道在一些小区中同时被重用。信道分配方法影响系统容量，信道分配方法分为固定信道分配和动态信道分配。通常，动态信道分配比固定信道分配提供更好的性能。然而，当动态信道分配应用于蜂窝系统时，很难在实际时间内得到解。因此，在蜂窝系统中寻找合适的算法是一个非常重要的问题。本年度取得以下成果：1.提出了一种基于神经网络的动态信道分配算法。该算法中的信道分配方案考虑了干扰的程度.提出了一种三维小区结构模型，并将传统的信道分配算法应用到该模型中.我们分析了阻塞传播动态信道分配的下界。