The general packet radio service (GPRS), a data extension of the mobile telephony standard GSM is emerging as the ®rst true packet-switched architecture to allow mobile subscribers to bene®t from high-speed transmission rates and run data applications from their mobile terminals. A high-level description of the GPRS system is given with emphasis on services and architectural aspects. Ó 2000 Els...

NTT DoCoMo is the company to ”DO COmmunications over the MObile Network”. It reached 43 million subscribers in Japan, early 2003. This presentation covers the multimedia services over mobile networks and give a glimpse of future directions of mobile multimedia networks and applications. DoCoMo’s 2G and 3G mobile networks currently offer mobile visual phones, multimedia mails, and video clip dow...

T he prices that mobile operators charge other network operators (fixed or mobile) for connecting calls to their subscribers – socalled termination charges – have become a hotly debated issue among regulators and academics worldwide. The level of these charges is perceived to be high both in absolute terms, but also in relation to similar prices charged by fixed network operators. Industry anal...

The worldwide market penetration of mobile phones is increasing rapidly and is already challenging fixed telephony in many countries. In addition to rising penetration rates, the role of mobile telephony is also changing. A luxury product in the late 1980s and early 1990s, the turn of the century saw a marked shift in the status of mobile phones.In Scandinavia and most other developed countries...

Mobile Cloud Computing (MCC) has revolutionized the way in which mobile subscribers across the globe leverage services on the go. The mobile devices have evolved from mere devices that enabled voice calls only a few years back to smart devices that enable the user to access value added services anytime, anywhere. MCC integrates cloud computing into the mobile environment and overcomes obstacles...

OBJECTIVE To investigate the risk of tumours in the central nervous system among Danish mobile phone subscribers. DESIGN Nationwide cohort study. SETTING Denmark. PARTICIPANTS All Danes aged ≥ 30 and born in Denmark after 1925, subdivided into subscribers and non-subscribers of mobile phones before 1995. MAIN OUTCOME MEASURES Risk of tumours of the central nervous system, identified fro...

The increasingly high penetration rate of mobile phones and the consequent exposure of subscribers to mobile technology present high hopes for the adoption of mobile commerce. Are such hopes justified? In this study, we address this question. More specifically, we develop and empirically test a model for explaining the role of exposure to mobile technology in the adoption of mobile commerce. Th...

The Mobile Web promises a new age of anytime, anywhere information access to billions of users across the globe. However, the Mobile Internet represents a challenging information access environment, particularly from a search standpoint. In this paper we present two visual interfaces for improved mobile search. First, we present SearchBrowser, a map-based interface that offers richer end-user i...

This paper considers the location-tracking problem in PCS networks. Solutions to this problem in fact highly depend on the mobility patterns of mobile subscribers [ACM DIAL-M (1999) 72]. In the literature, many works have assumed a simple random walk model, where mobile subscribers always stay in a roaming state and can move in any direction with equal probability. In this paper, we propose a n...

Mobile network operators can track subscribers via passive or active monitoring of device locations. The recorded trajectories offer an unprecedented outlook on the activities of large user populations, which enables developing new networking solutions and services, and scaling up studies across research disciplines. Yet, the disclosure of individual trajectories raises significant privacy conc...