3G移动音乐业务发展分析

随着3G时代的到来,3G移动网络速率得到提高,3G移动终端能力的增强,移动音乐业务将会进入快速发展的通道,并将在3G移动网络业务市场上占有较大的份额。本文分析和研究了3G移动音乐业务的技术实现、发展现状以及存在的问题等内容。     

浅析LTE网络中位置服务业务解决方案

为用户提供多样化的增值服务业务,是运营商吸引客户群和提高业务收入的主要途径之一。移动定位技术是一项为移动终端提供位置信息的移动增值服务业务,在4G网络中有更广阔的发展空间。本文讨论如何综合考虑4G网络不同发展时期的网络特点和位置服务方案,给出在4G网络中部署位置服务增值业务解决方案的建议。     

3G时代的移动定位业务及市场前景

介绍移动定位业务与3G网络的关系和可在3G网络中应用的三种移动定位技术,阐述制约我国移动定位业务发展的因素和推进我国移动定位业务规模化发展需要做好的工作.     

3G移动业务网络浅析

分析了3G业务发展的外部环境，简要说明了3G移动业务网络的概念和背景，结合3G业务网络的现状和特点，对3G业务网络中核心的综合业务平台的总体框架及其发展趋势进行了探讨。     

PHS与3G业务融合探讨

文章介绍了移动业务网络架构,对业务网络层次和移动业务网络组网进行了分析,并对PHS与3G业务融合的可行性进行了探讨,指出随着技术进步和网络带宽增加,PHS和3G的业务融合可以实现.     

移动回传的融合之路

1引言随着我国3G网络的大规模部署,3G业务将进入迅速发展的时期。移动承载网络也将逐步从核心到接入实现端到端全IP化。未来几年,中国的移动业务网络和承载网络的IP化进程将随着3G网络的全面部署而显著加速,随着后3G移动宽带业务的引入,将进入全面IP化的时期。     

3G业务体系结构分析

本文从3G多媒体IP网络体系结构出发,回顾了移动智能业务的发展历程,分析各个发展阶段代表技术与相应业务的体系结构,并指出相关技术的优缺点。本文重点分析了业界流行的Parlay/OSA技术;兼顾移动智能终端的发展,根据下一代业务开放、分布全业务的特点,提出3G移动多媒体IP业务系统发展方向。     

基于信令的GPRS国际漫游业务监控系统建设思路

1引言 随着3G网络的商用、移动数据增值业务的发展和国际漫游用户的增加,基于WCDMA技术,中国联通的3G网络将受到大量国际漫游高端用户的青睐,如何保证国际漫游业务质量将是中国联通3G业务战略的重要组成部分。尤其是GPRS数据业务对网络带宽需求大,业务质量要求敏感,涉及网络技术复杂,是国际漫游业务质量关注的一个重点。     

3G业务体系结构分析

本从3G多媒体IP网络体系结构出发。回顾了移动智能业务的发展历程。分析各个发展阶段代表技术与相应业务的体系结构。并指出相关技术的优缺点。本重点分析了业界流行的Parlay／OSA技术；兼顾移动智能终端的发展。根据下一代业务开放、分布全业务的特点。提出3G移动多媒体IP业务系统发展方向。     

移动回传迈入融合时代 IP/MPLS、PTN引领潮流

目前,3G业务进入迅速发展的时期,移动承载网络逐步从核心到接入实现端到端全IP化。未来几年,中国的移动业务网络和承载网络的IP化进程将随着3G网络的全面部署而显著加速,随着后3G移动宽带业务的引入,将进入全面IP化的时期。移动回程的建设不应当仅限于考虑短期的、当前的业务需求,还应当从技术和成本的角度,考虑原有业务如何兼容和网络发展的长期需求。换句话说,在移动业务宽带化的趋势下,移动回程解决方     

3G时代位置服务技术研究

由于具备动态3D地图、POI实时更新、实时交通导航等2G时代不具备的特点,3G时代的位置服务必将获得广阔的应用前景。首先介绍了当前三大类主流定位技术——基于网络的定位技术、基于移动终端的定位技术和混合定位技术,并简要分析了COO、AFLT、AGPS、GPSOne等技术的优缺点;然后按被定位单元、位置服务核心子系统、位置服务业务子系统、监控和管理端四个子系统讲解了国内运营商所采纳的主流位置服务平台的体系结构,描述了PDE、MPC、LCSClient等主要网元的功能,最后以一个移动台发起的定位过程为例说明了3G时代位置服务的实现过程。     

Understanding the user experience of location-based services: five principles of perceptual organisation applied

Within recent years, the development of location-based services have received increasing attention from the software industry as well as from researchers within a wide range of computing disciplines as a particular interesting class of context-aware mobile systems. However, while a lot of research has been done into sensing, adapting to, and philosophising over the complex concept of ‘context’, little theoretically based knowledge exists about why, from a user experience perspective, some system designs work well and why others do not. Contributing to this discussion, this article suggests the perspective of ‘Gestalt theory’ as a theoretical framework for understanding the use of this class of computer systems. Based on findings from an empirical study, we argue that the user experience of location-based services can be understood through Gestalt theory's five principles of perceptual organisation: proximity, closure, symmetry, continuity and similarity. Specifically, we argue, that these principles assist us in explaining the interplay between context and technology in the user experience of location-based services, and how people make sense of small and fragmented pieces of information on mobile devices in context.     

手机内容服务存在的问题与对策

随着3G网络建设和移动互联网的普及,手机内容服务行业得到飞速发展,但是伴随而来的是,一系列诸如手机淫秽信息泛滥的问题产生,严重制约了手机内容服务的发展。本文介绍手机内容服务现状,分析了手机内容服务产业链,剖析了手机内容服务中存在的问题,提出了手机内容服务存在问题的应对策略。     

Intelligent location models for next generation location-based services

To become truly ubiquitous, next generation location-based services (LBS) will have to rely on mobile platforms upon which multiple sensors and measurement systems have been integrated to provide continuous, three-dimensional positioning and orientation. Such technologies are explored today for example in mobile mapping systems, vehicle navigation systems and mobile robot navigation. Next-generation LBS also need theoretically sound methods to translate position into location information. The article addresses this problem: the transformation of position into meaningful and reliable location, and the transformation of location knowledge into positioning constraints. It suggests by this way an intelligent location model that integrates sensor fusion with spatial knowledge fusion via a feedback cycle. It is shown that this feedback cycle consists of three layers: spatial constraints, temporal constraints and spatiotemporal constraints.     

移动互联网业务发展浅析

随着3G技术的成熟及移动网络宽带化的发展,移动通信和互联网技术的融合趋势日趋明朗,移动互联网已成为全球关注的热点。介绍移动互联网业务的现状和特点,并对其关键问题、热点技术和发展趋势等进行分析。     

Role of location-based mobile apps in city marketing: Beşiktaş as a student-friendly district

ABSTRACT

In the age of globalisation and high competition among destinations, cities are empowered with new marketing tools to attract new residents and visitors while keeping their existing communities satisfied. Therefore, the main objective of the paper is to understand the role of location-based mobile applications among university students, who as members of the wired generation tend to use technology more than older generations. The secondary objective is to explore the most preferred location-based apps with their benefits and how they are used by the students to link themselves to the city and its services. Two focus groups are conducted with university students in Besiktas, which is claimed to be one of the most student-friendly environments in Istanbul. The findings reveal students’ preferences and reasoning for the use of location-based mobile apps. Apart from their satisfaction with the diversity of shopping, wayfinding, and geosocial networking apps, their concerns for digital privacy and personal data protection have become apparent. Further research is recommended for understanding the satisfaction and expectations of different user segments in the city since their evaluations might contribute to further develop and improve location-based services, and promote the city in the local and global markets.     

Impact of Galileo commercial service on location-based service providers: business model analysis and policy implications

Today's mobile location-based services (LBSs) largely depend on a free-of-charge, best-effort positioning technology, called global positioning system, which is controlled by the US military. The European alternative Galileo will not only offer a similar best-effort system by 2020, but also a premium-rate service known as Galileo commercial service (CS). Galileo CS is planned to provide higher positioning accuracy, improved security due to signal authentication and service guarantee. While the technology behind Galileo is often studied, the impact of Galileo CS on the LBS marketplace is rarely discussed. In this article, we fill this gap by analysing how improved accuracy, authentication and service guarantee may impact the business models of LBS providers. We do so by interviewing service providers, policy makers and industry experts on what new services would be enabled; technological alternatives that may emerge in the coming years; and organisational and financial issues that service providers face when adopting such a premium-priced positioning signal. We find that a more accurate, secure and reliable global navigation satellite system signal enables a range of new LBSs, although several alternative technologies are emerging that may make Galileo CS obsolete before it is even launched. To convince the LBS providers to adopt Galileo CS, the institution operating Galileo should get governments on board early on for building trust and should consider progressive pricing schemes. Still, service providers are sceptical about adopting Galileo CS, and the hope to recoup any investments in Galileo may thus be in vain.     

5G邻近服务关键技术

随着移动通信网络的发展,邻近服务功能为提高用户服务质量提供了更大的实现空间,同时存在更大的挑战.本文结合当前3GPP中邻近服务功能的标准研究情况,主要描述了5G邻近服务的关键技术,介绍了基于邻近服务的授权和直接发现流程,并分析了不同邻近服务中继通信方式的技术特点和适用的应用场景,研究了尚待解决的问题,并从多个角度分析了...     

The AROUND Architecture for Dynamic Location-Based Services

This paper presents a generic concept of location-based service as an abstraction for supporting the association between computational resources and location. The objective is to extend the advantages of service-based architectures to the development of location-based systems, thus providing a more open and extensible alternative to the vertical approaches typically used in this type of system. The novel AROUND architecture is proposed as an approach for supporting location-based services in the Internet environment. AROUND provides a service location infrastructure that allows applications to select services that are specifically associated with their current location. The architecture includes a flexible scope model that defines the association between services and location, and a service location infrastructure organised by spatial criteria and optimised for location-based queries. Based on a prototype implementation of this architecture, we have developed two case studies that illustrate the use of this approach for developing location-based systems. The overall results provide a valuable insight into the applicability of the architecture, and suggest that this model of location-based services can provide a useful approach for the development of a wide range of location-based applications.     

3G计费系统的探索:时不我待

3G时代是移动多媒体时代，但是移动多媒体时代并不会等着3G的来临才出现，全球的移动运营商已在2.5G网络上提供移动内容服务并在应对由内容计费带来的新挑战。明确了由于移动内容服务在移动网络中的发展给计费模式带来的挑战，并讨论了计费模式在过渡期的发展，其中还介绍了一些欧洲运营商的经验：它们正面临的问题以及采取的应对方法。