Personal Mobility Services Research Articles

CPW-FED slot antenna for personal mobile communication service (PCS) and bluetooth applications

A novel design of dual band CPW-fed slot for personal communication service (PCS) and Bluetooth applications is presented in this article.The proposed antenna is designed to operate at 1.8 GHz, 2.4 GHz, and it is fabricated on the FR4 substrate. In this structure, by cutting a pair of G-shaped slits in the ground plane we can gave a new resonance at lower frequencies for PCS in handy terminal, which operating at 1.77∼1.88 GHz band, also by embedding a pair of E-shaped slits at radiating stub, the presented antenna can be created and achieves good dual-band operation. The measured impedance bandwidth for l0 dB return loss is from 1.73 to 1.84 GHz and 2.33 to 2.45 GHz, covering the 1.8/2.4 GHz for PCS/Bluetooth applications. Simulated and experimental results obtained for this antenna show that the proposed slot antenna has a good antenna gains and radiation behavior within the 1.8/2.4 GHz frequencies. The designed antenna has a small size of 30 × 30 × 0.8 mm3. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:734–737, 2013; View this article online at wileyonlinelibrary.com. DOI: 10.1002/mop.27432

Research Issues in Personalization of Mobile Services

Personalization is gaining more importance with the increase of mobile and community services. Provision of personalized mobile services can help to meet the individual needs at a time and place when and where a user needs it. Mobile services should be designed to be usable and useful to realize the benefits of personalization. It is not an easy task to satisfy the individual's goals or needs. Currently, mobile services are designed either using a client side or server- side approach. At the same time, it is raising different research issues ranging from technological to security or privacy concerns. In this work, we described the current research and development in the area of personalization of mobile services. The objective of this paper is to analyze which design approach is suitable for the personalization of mobile services. Finally, we have discussed issues and challenges related to client-side personalization vs server-side personalization and the recent trends in personalization of mobile services.

High-performance computing in mobile services

With the ever increasing popularity of smart phones, mobile services have been evolving rapidly to allow users to enjoy localized and personalized experiences. Users can discover local information and keep connected with family and friends on the go, and ultimately to experience the convergence of cyber space and physical world where digital technologies are interwoven into the day-to-day life. A pivotal component of such a cyber-physical convergence is the contextual intelligence. The extraction and dissemination of contextual information around users is the key for the cyber capabilities to be applied to physical activities and for the cyber world to better reflect the physical reality. In this talk, we shall address some issues arising from context-based mobile services. In particular, we discuss how mobility impacts contextual relevancy and personalization in mobile services. The relevancy and timeliness of contextual information not only are essential for these services to deliver great user experiences, but also put significant computation pressure on service infrastructure that processes continuous data streams in real time and disseminate relevant data to a large amount of mobile users. This talk will explore the challenges and opportunities for high-performance computing in mobile services. Based on key findings from large-scale mobile measurement data, the talk will analyze the tradeoff of different computing architectures, present case studies of scalable system design and implementation for personalized mobile services, and conclude with open challenges for the broad research community in performance measurement and modeling.

Market Development Potential of Personal Mobility Services

The EU-funded project i-Tour addresses Safety, Efficiency, Environmental Sustainability in personal mobility by providing intelligent multi-modal mobility services, considering user preferences and real-time information on road, weather, public transport, network condition. Alternative business models, and go-to-market strategies are discussed:1. To market the complete solutions, or2. To market server access and interfaces configurationThese two approaches are deployed via two business strategies:a) A new company orb) Intermediation of a strong partner.Financial simulations are applied to reasonable compositions of the above hypotheses, with break- attained when population of reached areas tops 50 million, involving 20 to 30 Urban Zones.

Users' Trust and Intention to Adopt Personalized Mobile Services

Users' Trust and Intention to Adopt Personalized Mobile Services

A Service-Oriented Medical Framework for Fast and Adaptive Information Delivery in Mobile Environment

The need for fast treatment of patients in critical conditions motivates the use of mobile devices to provide prompt and consistent communication between hospitals and physicians. We propose a framework that supports ubiquitous access to medical systems using personalized mobile services and integrated medical systems. The proposed service-oriented medical framework provides dynamically composed services that are adapted to contextual variables such as the user's role, the network bandwidth, and resources available at mobile devices while supporting task allocation in distributed servers for massive resource-consuming services. It also manages accurate patient data by integrating local medical systems using medical information standards such as Digital Imaging and Communications in Medicine and Health Level 7. We have demonstrated the effectiveness of our framework by building a prototype of context-based adaptation of computerized tomography image retrieval for acute stroke treatments, which allows images to be viewed on mobile devices with WiMax wireless network. The proposed medical framework reduces hospital delays of patients and facilitates treatments in the absence of medical specialists.

임베디드 리눅스 기반의 개인 모바일 방송국 서비스 설계 및 구현

본 논문에서는 무선 네트워크 환경에서 사용자의 개인 실시간 방송을 가능하게 하는 임베디드 리눅스 기반의 개인 모바일 방송국 서비스의 설계 및 구현에 대해 기술한다. 최근 다양한 무선 네트워크 서비스의 출현과 고성능의 모바일 단말의 사용 증가로 인해 개인 모바일 방송에 대한 요구가 점점 증가되고 있다. 개인 모바일 방송국 서비스는 모바일 단말 사용자가 무선 네트워크 환경에서 이동 중이나 혹은 특정 장소에서 자신의 단말을 이용하여 방송 컨텐츠를 생성하고, 생성된 컨텐츠를 실시간으로 자신의 블로그가 있는 서버로 전송한다. 방송 생성자의 개인 블로그에 접속한 일반 사용자들은 방송 생성자의 컨텐츠를 실시간으로 시청할 수 있다. 구현된 개인 모바일 방송국 서비스는 무선 네트워크를 통해 모바일 사용자들이 실시간으로 멀티미디어 컨텐츠를 공유할 수 있도록 지원한다. 그리고, 야외의 사고 현장이나 공연 등을 촬영하여 실시간으로 방송할 수 있는 개인 방송국을 쉽게 구축할 수 있도록 한다. This paper describes the design and implementation of Personal Mobile Broadcasting Service which bases on embedded Linux and it supports personal broadcasting in wireless network environments. Recently, with the advent of various wireless networks and the increased use of high performance mobile devices, the demand for personal mobile broadcasting is being increased. The personal mobile broadcasting service makes it possible that mobile users create contents using their own mobile devices while they are moving or they are in any place. And then, it sends the created contents to server in real-time where their blogs are. Users connected to the content creator's blog can play the contents in real-time. With the implemented personal mobile broadcasting service, mobile users can share multimedia contents in real-time through wireless networks. And, it also helps users to construct their own broadcasting stations where they can broadcast the scene of the accident or public performance in real-time.

O setor de telefonia móvel do Brasil após o SMP: as estratégias das operadoras e a convergência fixa-móvel

Este artigo analisa como a regulação do Serviço Móvel Pessoal (SMP), implementada pela Anatel em 2001, alterou a estrutura do mercado e as estratégias das operadoras do setor de telefonia móvel no Brasil, entre 2002 e 2007. Foi realizada uma pesquisa qualitativa e um estudo de caso múltiplo acerca das maiores operadoras do setor: Vivo, Tim, Claro e Oi. Diante da análise setorial e da influência de fatores externos sobre a estrutura do mercado, adotou-se o referencial teórico clássico de estratégia competitiva a fim de se entender as estratégias das operadoras. Adotou-se também um referencial mais específico do setor de telecomunicações, com destaque para trabalhos que discutem a convergência entre as telefonias fixa e móvel. Entre as conclusões do trabalho estão os efeitos de caráter deliberado das mudanças na regulação sobre as estratégias empresariais do setor, entre elas a adoção generalizada de estratégias de custo até o lançamento de serviços inovadores no mercado nacional, caracterizados pela integração entre as operadoras de telefonias fixa e móvel, promovendo estratégias de diferenciação, claramente representadas pela formação de dois grupos estratégicos: um com serviços convergentes do tipo bundle e relações de quase integração vertical entre operadoras fixas e móveis e outro com serviços convergentes entre operações de telefonia fixa e móvel verticalmente integradas.

Empowering next-generation wireless personal communication networks

Next-generation wireless systems should provide to the user access to a broad range of services in a transparent way, independent of user location by making the technology invisible and embedded in the natural surroundings. Reaching this goal requires efficient cooperation between heterogeneous networking technologies and different protocols. Wireless personal networks are an integral part of such an emerging heterogeneous infrastructure. It is highly desirable, and in fact required due to economical constraints, to incorporate the present wireless systems in building the new paradigm. The key protocol glue between systems is the use of IP. Based on this scenario, we describe an architecture suited for the present and future personal mobile communications networks and services.

Unified personal mobile communication services for a wireless campus

A wireless campus environment provides user mobility, as users are no longer tied to fixed locations to access the network. It also offers high network accessibility as network resources remain accessible after office hours. While existing communication applications can work in a wireless network, they are separate applications that often require different devices. This paper describes a personal communications system that integrates various services into a unified platform, providing a one‐stop source for both information access and communication within a wireless campus environment.

Towards mobile service agents within an advanced broadband IN environment

This paper shows a possible path for the introduction of Mobile Service agents within an advanced Broadband Intelligent Network environment. The potential benefits of Distributed Object Technology and Mobile Agents Technology are described and the overall architecture is defined. Then some multimedia services and personal mobility service features are introduced in order to show the wide spectrum of Telecommunication services that can exploit this architecture.

Numbers and identities for emerging wireless/PCS networks

In order to support mobility management functions in wireless/PCS networks and provide national and international roaming, well defined, standardized subscriber/terminal numbers and identities are required. Some form of station equipment identities are also needed to ensure that service is denied to non-type-approved or stolen terminals. The article provides an overview of existing standards and current usage of numbers and identities in mobile networks, and their application and planned evolution to support a range of terminal and personal mobility services as PCS networks and services are introduced.

Future systems for personal mobility services: design, performance evaluation, and implementation

The intelligent network (IN) is a worldwide concept which specifies the functions, interfaces, and service-independent building blocks for the implementation of value-added services in digital telecommunication networks. One example is UPT (universal personal telecommunication), a service for fixed network mobility, which is presently being standardized. This paper describes the evaluation and implementation of an advanced UPT service, which allows a reachability control for ISDN based on the signaling system no. 7 (SS.7) and the intelligent network, which depends on the user's present social role (work, meeting, travel, vacation, etc.). The paper applies models of the users' communication habits, the components, and network services, develops simulation and queuing models for the traffic analysis and evaluation; and determines the call setup time for the new services as well as the quantitative load on the signaling network. Different scenarios for the distribution of the functionality of the intelligent network are studied. Two prototypes of the advanced UPT service are described: an integrated implementation placed in the network, and a standalone implementation outside the network. These prototypes have been displayed at several conferences and fairs. Services of this type are of interest in view of new competitive value-added services.

Emerging mobile and personal communication systems

The market demand for wireless communications has been demonstrated by the rapid growth of different second-generation wireless technologies that are optimized for particular applications and environments. Obvious examples include: digital cellular systems like GSM, ADC, PDC,and DCS1800 for widespread vehicular and pedestrian services, and cordless telecommunication systems based on CT2, DECT, and PHS standards for residential, business, and public cordless access applications. Efforts are also underway to consolidate the various radio environments and applications under a single standard for third generation wireless, i.e., FPLMTS. In the area of personal mobility, with the recent availability of "personal" numbers in various countries (e.g., 500 numbers in the United States), many fixed network operators are starting to offer such personal mobility services as "personal number service" and "number portability". These services represent initial stages of full personal mobility that will be provided by UPT in both wireline as well as wireless environments. The expected heavy demand for PCS in the United States and the underlying market/regulatory forces are driving the standardization and business activity. A number of air interface standards for the 1900 MHZ PCS band are being considered, which are based on TDMA, CDMA, and FDMA technologies singly or in combination. Many are variations of existing digital cellular and cordless telecommunications technologies. PCS networking standards are also being developed; both for standalone systems and for systems that will utilize public switched network capabilities.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>