无线市话高速数据业务解决方案

1引言近年来,无线市话“小灵通”(PHS,PersonalHandyphoneSystem)业务在我国发展迅猛,已成为固定网通信运营商重要的业务增长点。到2002年8月底,全国已有300多个城市开通了无线市话业务,用户数超过了1000万。PHS不但能够提供语音服务,而且在高速数据传输方面优势明显,上网速率达到128kbit/s。较高的上网速率、经济的上网费用、灵活的上网方式等备受PHS用户青睐。日本有近40%的PHS用户使用无线数据业务。日本于1996年提出PIAFS(PHSInternetAc鄄cessForumStandard)协议,为PHS无线数据业务提供了统一的接入标准。该协议位于OSI的…     

PHS无线市话技术和业务的新进展

PHS无线市话从1998年在国内获得应用以来，设备制造商和运营商共同努力和合作，在产品和技术方面不断取得许多重大改进和创新，系统技术日益成熟，网络质量不断提高，各种特色的业务日渐增多，终端品种和功能越来越丰富。这里从PHS无线市话的技术、业务和终端等几个方面详细介绍近两年来PHS无线市话取得的进展。     

审视PHS无线市话健康发展之路

基于对PHS无线市话发展形势和环境的认识，提出目前必须进行科学定位。包括技术、网络、业务和标准的界定。为确保PHS无线市话未来能够健康发展，必须强调依附于固定电话网。注重网络优化。发展规模适当。突出效益。以及运营商与制造商依存。最后指出。PHS无线市话不宜作为不同运营商之间相互渗透的手段；双模终端发展也需慎重；业界更需研究在3G许可证颁发之后PHS无线市话的发展策略。     

UT斯达康利用iPAS技术改造泰国PHS网络

日前,UT斯达康公司宣布将与泰国亚洲电信(Telecom Asia)合作利用UT斯达康iPAS技术改进泰国原有的PHS无线接入系统,推动泰国曼谷地区无线市话的网络覆盖、产品和服务的进一步发展,以吸引、发展更多高端用户享受这一新型、便携的通信服务。泰国目前PHS网络覆盖曼谷中心地区1600km2,用户超过60万。亚洲电信将采用UT斯达康iPAS技术为用户提供强大的无线市话增值业务。 (本刊讯)UT斯达康利用iPAS技术改造泰国PHS网络…     

一种无线市话(PHS)终端一机多号的实现方法

目前,PHS网络在我国是作为无线市话来发展的。无线市话(PHS)终端的终端号码和终端是捆绑在一起的,只局限在当地使用,无法实现跨省市漫游。分析了无线市话用户的身份识别过程,介绍了无线市话(PHS)终端的关键参数,提出了一种无线市话(PHS)终端一机多号的方法,解决了在两地或两地以上使用同一台无线市话(PHS)终端的问题。     

PHS短消息业务重发机制分析

PHS短消息业务是在无线市话(PHS)网络上提供的一种简便、实用、高效的增值业务。本文针对PHS短消息重发机制进行了探讨,根据不同的失败原因提出具有针对性的重发机制以提高短消息的发送成功率。     

电信增值业务专题——PHS短消息业务重发机制分析

PHS短消息业务是在无线市话(PHS)网络上提供的一种简便、实用、高效的增值业务。本文针对PHS短消息重发机制进行了探讨，根据不同的失败原因提出具有针对性的重发机制以提高短消息的发送成功率。     

PHS短消息业务重发机制分析

1　　概述PHS短消息业务是在无线市话(PHS)网络上提供的一种简便、实用、高效的增值业务。随着PHS业务的开展,基于PHS的增值业务,尤其是短消息业务对于提升PHS运营商的竞争力,满足用户的个性化、多样化无线通信需求有着极其重要的作用。由于PHS短消息业务是基于呼叫控制流程来实现的,因此PHS短消息业务质量具有受用户行为影响很大的特点,而对短消息重发机制与重发间隔的适当设置,能够减低由于用户行为造成的短消息最终下发失败,从而提高PHS短消息业务成功率。本文就PHS短消息重发机制进行了探讨,并根据不同的失败原因提出了具有…     

关于四川电信PHS无线市话经济效益和发展策略的探讨

简要叙述了 PHS无线市话技术的特点及国内外发展情况 ,介绍了四川电信PHS系统的建设、运行和经营情况 ,并对项目的经济效益进行了财务评价 ,最后对PHS无线市话的发展策略提出了一些建议     

《中兴通讯技术》第10卷总目次

卷·期·页卷·期·页一、专题无线市话应用及技术发展趋势对下一代网络的战略思考………………………韦乐平10-1-01无线市话前景乐观………………………………李进良10-1-073G来临与PHS发展的战略选择……………伍正冈顾翔10-1-10PHS数据通信技术的发展及业务运营探讨…………………叶青郝振武王炜10-1-14PHS增值业务及其发展探讨…………胡雪梅王全张10-1-18PHS与3G的关系及两者的业务融合…………………管文明唐毅万晓榆10-1-21PHS与3G业务融合探讨……………………………叶征10-1-24PHS系统中的智能基站…………………………王…     

定位技术在奥运“城市通”系统中的应用

作为2008年奥运会的举办城市,北京将会成为国内外游客主要聚集的地区,为了向用户提供"随时随地、方便快捷"的信息查询和位置查询服务,中国网通集团研究院开发了奥运"城市通"系统,通过该系统,用户可以使用一个具有定位功能的小灵通终端进行餐饮、娱乐、观光的出行导航和综合城市信息、企业信息的查询,因此,定位技术是实现"城市通"业务的核心,为开发其他增值业务提供了基础,本文将详细介绍定位技术在"城市通"业务中的应用。     

Pre‐handover signalling for QoS aware mobility management

In this paper we present a new approach to provide fast handover in Mobile IP. A new Pre‐Handover Signalling (PHS) protocol is proposed to allow the network to achieve accurate handover decisions considering different constraints such as QoS, load balancing in the base stations, the user profile, the mobile node service requirements, etc. In addition we propose to minimize the time discovery of the new base station in order to minimize the handover latency. We propose to start the PHS as soon as the mobile node crosses a predefined critical zone area in its current location, this signalling will provide a list of candidate cells to the mobile node with corresponding priorities; the mobile node will select the highest priority base station as soon as the layer two handover occurs. We propose in the current work to use an extension of COPS (Common Open Policy Service) to support the proposed PHS mechanism and overcome the blind handover decisions of Mobile IP and improve the handover performance. Copyright © 2004 John Wiley & Sons, Ltd.     

PHS roaming signaling protocol architecture toward global mobilitynetwork

The network for supporting the global personal communication is called the global mobility network (GLOMONET), where global mobility is guaranteed by coordination between intelligent networks (INs). This paper describes the implementation of a roaming signaling protocol for the personal handy-phone system (PHS) GLOMONET, clarifying the concepts of the PHS architecture regarding the GLOMONET. The PHS is a more economical personal communication system than existing cellular systems, by introducing the concept that the PHS service is provided by the most effective use of the existing ISDN and IN functions, where the majority of network functions to provide ISDN services are commonly used for functions for PHS service provision. The PHS mobility function realized by the IN guarantees flexible and effective roaming service provision for the globalization of future personal communication. The proposed PHS signaling protocol architecture is based on the intelligent network capability set 2 (IN CS2) defined by the International Telecommunication Union-Telecommunication Standardization Sector (ITU-T) Study Group 11 and a visitor location register (VLR) database scheme with efficient signal transfer in the GLOMONET. The PHS specific roaming signaling protocol is defined by the service-independent IN application protocol (INAP). The proposed PHS concepts and roaming signaling protocol were reflected to the national telecommunications standards in the Telecommunication Technical Committee (TTC) and standards in the PHS-memorandum of understanding (MoU)     

PHS数据通信技术的发展及业务运营探讨

文章概述了个人手持电话系统(PHS)的发展过程,对其最新技术进行了介绍,并在对PHS数据通信业务的发展及运营策略进行深入分析和探讨的基础上,展望了该业务的应用前景.     

"小灵通"在天津通信中的应用

对“小灵通（PHS）”系统作了简要的介绍，描述了中兴公司ZXPCS系统的组成及业务功能，并对PHS在天津通信的应用进行了分析，最后就其发展的问题提出了几点建议。     

A novel electromagnetically coupled microstrip antenna with arotatable patch for personal handy-phone system units

In this paper, we propose a novel electromagnetically coupled microstrip antenna with a rotatable patch to overcome the problems associated with the conventional whip antenna for the personal handy-phone system (PHS). The structure of the newly developed antenna installed in actual PHS units is described. Its fundamental characteristics such as radiation pattern, bandwidth, and gain are shown. The performance of the antenna in actual propagation environments is also clarified. It is shown that this novel antenna is superior to the conventional whip antenna and achieves efficient performance in commercial PHS service     

A Privacy Preserving Method Using Privacy Enhancing Techniques for Location Based Services

The move towards service-oriented architectures and the increasing usage of mobile devices to access such services are two of the major changes in modern computing. Information about the user, their location and their trajectory can provide additional context information to a service, leading to useful applications such as directing a user to the nearest bus stop and displaying which buses are due to arrive in the next minutes. While this type of information can be useful, when the offered services are trusted, it also introduces privacy issues relating to gathering of location information for non-trusted applications like location-based marketing or user behaviour profiling. Users can limit their location information provided to a service but these controls are simple, making it important for the user to understand how their location information is being used by services. This paper reviews some of the methods currently being proposed to reduce the impact of location tracking on user privacy, and presents a novel encryption method for preserving the location and trajectory path of a user using Privacy-Enhancing Technologies.     

无线市话业务管理系统

介绍了应用计算机网络系统实现天津市通信公司无线市话“小灵通”业务的实时联机处理。该系统采用本地网数据集中方式，完成无线市话业务的闭环管理，实现多种灵活的营销策略，充分满足不同用户对通信业务的需求。     

面向未来的PHS系统数据业务研究

随着PHS系统语音业务市场渐趋饱和,数据业务研究的重要性凸现.详细介绍了应用实时操作系统实现PHS系统数据业务仿真系统的方法.在此基础上研究未来PHS数据业务应用高阶调制和纠错码技术后的传输性能,给出了仿真结果并进行对比分析,得出了通过联合链路层ARQ与物理层自适应调制与编码以提高数据传输性能的方法,同时探讨了进一步研究的方向.     

面向未来的个人手持电话系统数据业务研究

随着PHS语音业务市场渐趋饱和,数据业务研究的重要性凸现。详细介绍了应用实时操作系统实现PHS系统数据业务仿真系统的方法。在此基础上研究未来PHS数据业务应用高阶调制和纠错码技术后的传输性能,给出了仿真结果并进行对比分析,得出了通过联合链路层ARQ与物理层自适应调制与编码以提高数据传输性能的方法,同时,探讨了进一步研究的方向。