个人通信网和个人通信服务

作为第三代移动通信的创新概念“个人通信”被提出以来，个人通信网和个人通信服务从定义、理论、技术、设备等各方面得到不断发展和明显进步，得到全世界通信学界的极大重视，本文依据个人通信网的定义和现实发展，对个人通信网的研究发展方向，技术重点，实现个人通信服务所需求的功能和应用前景等进行讨论。     

无线个人通信网及其技术

本文简要介绍了无线个人通信网的基本概念和网络结构，讨论了实现无线个人通信的３种方案，并指出其关键技术。     

英国个人通信网（PCN）

1993年9月,英国Mercury个人通信(MPC)公司的个人通信网(PCN)正式投入使用。这是世界上第一个正式使用的PCN网,它是个人通信发展史上的一次突破性进展。     

无线个人通信网及其技术

本文简要介绍了无线个人通信网的基本概念和网络结构,讨论了实现无线个人通信的3种方案,并指出其关键技术。     

个人通信网中的位置管理策略

介绍了当前位置管理的常规策略 ,以及位置管理策略的新技术和发展方向。     

全球个人通信网市场发展一瞥

本文在明确了个人通信的概念后。介绍了目前个人通信的主要系统制式及市场发展现状。作者还对ＰＣＳ的发展前景及面临的问题谈了见解。     

个人通信的研究发展现状与面临的问题

介绍个人通信网（PCN）的关键技术，如网络结构、智能网技术、接入网技术、多媒体技术、移动管理和网络控制等，论述了国内外的研究发展现状，讨论了PCN发展中的一些其它问题。     

An Efficient Link Allocation Algorithm for ATM-Based Personal Communication Networks

The wireless personal communication networks (PCN) will play an important role throughout the 1990s and into the next century. Due to the demand for extending the wireless services to integrated services such as data, voice, images and video, a high-speed backbone network to connect the base stations in the microcells is required. One of the possible solutions is to apply the ATM-based backbone network. In such an ATM-based PCN, the communication path between a pair of mobile terminals might be elongated due to the mobility of terminals. Generally, there are two ways to resolve this problem. The first is to migrate the elongated path to a better one when necessary. The other is to design an appropriate backbone network by considering the mobile environment. Recently, several mechanisms based on the former approach have been proposed. In this paper, the latter approach is considered and the design problem of allocating the backbone links among the ATM switches so that the network performance affected by the terminal mobility is kept as less as possible is investigated. We show that this link allocation problem is NP-hard. A simple and efficient heuristic is also proposed for this problem. Simulation results show that based on the backbone obtained by the heuristic, the average length of each communication path is kept as short as possible even under the mobile environment. As a result, the number of successfully established paths in the network is increased significantly.     

天津移动通信网管系统

介绍了天津移动通信网管系统开发建设的必要性及所开发网管系统的特点、系统网络、软硬件的结构、功能和应用的效果。     

车辆无线通信网络及其应用

文章介绍了车辆通信网的基本概念、网络架构、国际标准及关键技术,分析了其在物理层、媒体接入层、路由层、安全技术的研究热点问题,并讨论了其在智能交通、安全行车、导航和智能驾驶等方面的应用前景。     

走向智能化的第三代移动通信系统

第三代移动通信系统最重要的技术特征是智能移动通信技术,即系统的各功能模块的智能处理单元来实现,这些单元包括智能天线、智能传输、智能接收、智能业务接入和智能网络管理,智能天线的研究最有物色的是适合于ＣＤＭＡ的智能天线技术,智能传输主要涉及延寿适应调制、综合功率控制等;在智能接民中使用中国科技大学提出的最小均方误差简化方法（Ｓ－ＭＭＳＥ）检测的用户数经常规方法的用户数增加约一半,有很好的应用可能;智能     

无线数据通信网发展趋势

无线数据通信具有两大发展趋势，即低速的广域移动数据网及高速的局域无线数据网。本文介绍了其技术特点、应用情况和市场前景，分析了无线数据通信传输技术、网络结构和媒质接入控制等问题。     

Hierarchical Group Location Tracking for Transportation Systems in Wireless Personal Communication Networks

A hierarchical group location tracking (HGLT) based on grouplocation tracking and hierarchical location update is proposed toreduce the location management cost for terrestrialtransportation systems (TSs) in personal communication networks. A global group location update (GGLU) and a local group locationupdate (LGLU) are performed to provide an accurate position for auser. The GGLU informs a virtual visitor location register of thecurrently camped-on location area and the LGLU informs the servingmobile switching center of the currently camped-on cell. Althoughthe LGLU is done each time a TS moves into a new cell, it causessmall increment in the signaling cost due to localized updates andgroup updates compared with the previous group location trackingscheme. The proposed scheme significantly reduces the paging costbecause the scheme pages only a camped-on cell using the LGLUinformation. Compared with the previous schemes, the HGLT reducesthe location management cost, and it is more efficient as thecost for paging a cell increases.     

网络编码在无线通信网络中的应用

网络编码是一种可以逼近网络容量传输理论极限的有效方法,在无线网络环境。中有着广泛的应用前景。在无线中继网络中采用网络编码技术,可以使中继节点同时为多个用户转发数据,从而获得较高的转发效率。网络编码在无线中继网络中的典型应用方案包括噪声中继采用置信传播算法实现网络编码,复数域网络编码算法以及信道编码和网络编码联合设计方法,它们均可在获得较高网络吞吐量的同时实现完全分集。在多用户协作通信网络中采用网络编码技术,可获得更高的分集增益以及更低的符号错误概率。     

宽带无线移动通信网络优化及相关发展策略思考

在介绍宽带无线移动发展趋势所采用的新技术的基础上，论述了宽带无线移动通信网络优化及相关发展策略的一些问题。