Business models for deployment and operation of femtocell networks; - Are new cooperation strategies needed for mobile operators?

In this paper we discuss different business models for deployment and operation of femtocell networks intended for provisioning of public mobile broad band access services. In these types of business cases the operators use femtocells in order to reduce investments in "more costly" macro networks since the traffic can be "offloaded" to "less costly" femtocell networks. This is in contrast to the many business cases presented in Femtoforum where femtocells mainly are discussed as a solution to improve indoor coverage for voice services in homes and small offices, usually for closed user groups The main question discussed in this paper is if "operators need to consider new forms of cooperation strategies in order to enable large scale deployment of femtocells for public access?" By looking into existing solutions for indoor wireless access services we claim that the answer is both "Yes" and "No". No, since many types of cooperation are already in place for indoor deployment. Yes, because mobile operators need to re-think the femtocell specific business models, from approaches based on singe operator networks to different forms of cooperation involving multi-operator solutions, e.g. roaming and network sharing. --

A Preliminary Study of Integrating Flipped Classroom strategy for Classical Chinese Learning

[[abstract]]This is a multiphase study which aims to investigate how to provide learners with an method to acquire classical Chinese through integrating mobile technology with the flipped classroom approach. Currently, in the first phase of study, the researcher adopts informant design through questionnaire survey to understand students' and instructors' perceptions of using mobile learning devices for classical Chinese learning, and afterwards the researcher constructs the system based on the pilot results. The pilot questionnaire results, structure of the developed mobile learning system and the practical application of the developed system for classical Chinese teaching and learning are described in the paper.[[notice]]補正完

Open Business Models and Closed-Loop Value Chains: Redefining the Firm-Consumer Relationship

Driven by recent socio-economic developments, manufacturing firms increasingly adapt their business models along two dimensions. Apart from vertically integrating the entire product life cycle, traditionally separated tasks are re-allocated into new forms of horizontal stakeholder collaborations. Incorporating these two dimensions, this article develops a framework of nine business model archetypes that holistically capture the increasing openness of business models towards consumers in the emerging closed-loop value chain. Using illustrative examples, it demonstrates their broad applicability in different industries and derives important managerial implications for firm-consumer relationships, the relevance of consumer communities, new product development activities, and the sustainability of business models

Bridging the digital divide in African post-conflict countries : a case study of the DRC cities of Kinshasa and Kananga

Includes bibliographical references (leaves 34-37).The digital divide is largely seen as the main problem that developing economies and societies must overcome to gain economic productivity and social welfare. In this document we state that modern western perception of the digital divide lured advancement of lCT into developing countries especially in Africa. lCT must not be seen as a goal in itself but as a means to service human needs. This study attempts to analyze the willingness of people to adopt existing lCT infrastructures and the factors impeding its use in the DRC's cities of Kinshasa and Kananga

Estabelecimento de redes de comunidades sobreponíveis

Doutoramento em Engenharia InformáticaUma das áreas de investigação em Telecomunicações de interesse crescente prende-se com os futuros sistemas de comunicações móveis de 4a geração e além destes. Nos últimos anos tem sido desenvolvido o conceito de redes comunitárias, no qual os utilizadores se agregam de acordo com interesses comuns. Estes conceitos têm sido explorados de uma forma horizontal em diferentes camadas da comunicação, desde as redes comunitárias de comunicação (Seattle Wireless ou Personal Telco, p.ex.) até às redes de interesses peer-to-peer. No entanto, estas redes são usualmente vistas como redes de overlay, ou simplesmente redes de associação livre. Na prática, a noção de uma rede auto-organizada, completamente orientada ao serviço/comunidade, integralmente suportada em termos de arquitetura, não existe. Assim este trabalho apresenta uma realização original nesta área de criação de redes comunitárias, com uma arquitetura subjacente orientada a serviço, e que suporta integralmente múltiplas redes comunitárias no mesmo dispositivo, com todas as características de segurança, confiança e disponibilização de serviço necessárias neste tipo de cenários (um nó pode pertencer simultaneamente a mais do que uma rede comunitária). Devido à sua importância para os sistemas de redes comunitárias, foi dado particular atenção a aspetos de gestão de recursos e controlo de acessos. Ambos realizados de uma forma descentralizada e considerando mecanismos dotados de grande escalabilidade. Para isso, é apresentada uma linguagem de políticas que suporta a criação de comunidades virtuais. Esta linguagem não é apenas utilizada para o mapeamento da estrutura social dos membros da comunidade, como para, gerir dispositivos, recursos e serviços detidos pelos membros, de uma forma controlada e distribuída.One of the research areas with increasing interest in the field of telecommunications, are the ones related to future telecommunication systems, both 4th generation and beyond. In parallel, during the last years, several concepts have been developed related to clustering of users according to their interested, in the form of community networks. Solutions proposed for these concepts tackle the challenges horizontally, for each layer of the communication stack, ranging from community based communication networks (e.g. Seattle Wireless, or Personal Telco), to interest networks based on peer-to-peer protocols. However, these networks are presented either as free joining, or overlay networks. In practice, the notion of a self-organized, service and community oriented network, with these principles embedded in its design principles, is yet to be developed. This work presents an novel instantiation of a solution in the area of community networks, with a underlying architecture which is fully service oriented, and envisions the support for multiple community networks in the same device. Considerations regarding security, trust and service availability for this type of environments are also taken. Due to the importance of resource management and access control, in the context of community driven communication networks, a special focus was given to the support of scalable and decentralized management and access control methods. For this purpose, it is presented a policy language which supports the creation and management of virtual communities. The language is not only used for mapping the social structure of the community members, but also to, following a distributed approach, manage devices, resources and services owned by each community member

Applying human-like intelligence to future generation network to improve communication efficiency

Includes abstract.Includes bibliographical references (leaves 251-257).In recent decades, communications network has evolved at drastic speed to provide advanced and intelligent services. This strengthening service provision owes to the successful establishment of various intelligent networks and the use of artificial intelligence, pervasive computing, and social networking in communications. It has consequently endowed network users with abundant choices of communication services. While these communications services are bringing convenience to human lives, people in turn are performing more tasks. The current network with its large number of available communications services is then often burdening network users with the complexity and inflexibility in using these services. In particular, the network lacks the initiative and the ability to investigate a user’s most recent communication needs and subsequently adjust the manner of service provision according to these needs and user connecting possibilities. The network needs to be more intelligent to handle these problems. We therefore propose importing human-like intelligence into the network to facilitate communication-session processing according to user needs

Social dimensions of public large-scale wi-fi networks: the cases of a municipal and a community wireless network

Wireless networks play an increasingly important role in today’s mobile and interconnected society. People use mobile devices such as smartphones, tablets or portable game consoles on a regular basis to interact, retrieve and share information, and to orient and entertain themselves. However, in order to be fully performant these devices need to be connected to the Internet. Thanks to very good broadband penetration in Switzerland, this is not so much an issue in private homes and offices where local Wi-Fi networks allow mobile devices to connect to the Internet. Nonetheless, in public spaces, good working wireless networks, even though increasing, are still not very frequent and generally cover only limited areas. Alternative, provider- centered mobile data (3G/4G/LTE) is still expensive especially for visitors because of high roaming rates but also for Swiss people, whose majority still did not have unlimited data contracts in 2016. Public large-scale wireless networks can thus play an important role in providing Internet connectivity to people on the go. This dissertation studies two different approaches to the provision of Wi-Fi broadband connectivity in public spaces: on the one hand, municipalities providing Wi-Fi access in some areas of the city through so-called Municipal Wireless Networks (MWN), and on the other hand, communities with members sharing part of their home broadband connection with other community members, building so-called Community Wireless Networks (CWN). Wireless communities can either be purely self-organized (pure wireless communities) or have a for-profit company managing the community (hybrid communities). While existing studies have analyzed business and ownership models, technical solutions and policy implications of public wireless networks, this research is interested in their social dimensions, focusing on the role of individuals using and contributing to these networks. To do so, two main research goals are addressed: 1) understanding what motivates people to join and actively participate in a hybrid CWN and what hinders them from doing so, and 2) understanding who the users of a MWN are and how they use the network in order to identify various user types and usage practices, which will in turn help municipalities design networks that address the needs of various users. In order to study users’ motivations and concerns for joining and actively participating in a hybrid wireless community, the Fon community (Fon, 2018b) has been analyzed, which at the time of this study was the largest worldwide hybrid CWN. A mixed research approach has been applied. First, an existing model on motivations in pure communities (Bina & Giaglis, 2006a) has been adapted with the help of semi-structured exploratory interviews of 40 Swiss Fon members and then refined through a quantitative online survey addressed to Swiss and foreign Fon members. The resulting model shows which motivations attract members to the community, and which concerns have a dissuasive function. In a second step, 268 valid survey answers have been used for structural equation modeling (SEM) in order to assess which motivations actually result in a higher level of active participation. In order to analyze usage and users of a MWN, the “WiFi Lugano” MWN of the city of Lugano has been chosen. Lugano is located in the Italian-speaking southern part of Switzerland, is a popular tourist destination and the region’s economic capital. In collaboration with the electricity company in charge of implementing the Wi-Fi network (Aziende Industriali Luganesi – AIL), technical network data (log-data) and user-provided information – users were asked to fill-in a short survey after they logged-in to the network – have been collected and analyzed in combination (the two data sets have been merged). In a first step, usage profiles of leisure tourists, business travelers and residents have been created and described applying descriptive statistics to data of three summer months (June – August 2013). In a second step, cluster analysis has been applied to one-year data (June 2013 – May 2014), in order to identify relevant groups of users. Outcomes suggest that in a hybrid CWN, members are motivated to join the community mainly by a mix of utilitarian (e.g. getting free Internet access) and idealistic motivations (reciprocity and altruism), while intrinsic and social motivations are less important. This confirms that motivations are similar to those in pure CWNs but have different weights. In fact, in pure CWNs, intrinsic and social motivations seem to be stronger while in hybrid CWNs, utilitarian motivations prevail. Two types of active participation have been identified in the Fon community, each one driven by a different mix of motivations: “participation by sharing” – putting effort into actively sharing one’s own Internet connectivity – is mainly driven by idealistic motivations related to community values and reciprocity, while “social participation” – being socially involved in the community by interacting with and helping other community members – is driven by social (communicating, learning from each other) and technical reasons (experimenting with technologies). Surprisingly, utilitarian motivations do not have a significant effect on either of the two participation types, even though they are the most relevant ones in attracting new members. With regard to the MWN “WiFi Lugano”, five different usage practices have been identified: two business-oriented ones (“E-mailer” and “Mobile-worker”), two tourism-oriented ones (“Tourism information seeker” and “Always-on traveler”), and one corresponding to the practices of locals (“Local social networker”), each one having different characteristics. The “WiFi Lugano” network thus acts as a business, tourism, and social inclusion enabler, actively favoring various eGovernment relationships: government to business (G2B), government to visitors (G2V), and government to citizens (G2C). Based on these outcomes it has been possible to define a series of suggestions to help cities take advantage of their MWNs and improving them accordingly. Cities could for example provide different landing pages to different publics in order to promote the city in a targeted way, ensure a high quality service of their MWNs, use the Wi-Fi networks to promote tourist attractions and vice-versa (e.g. mark Wi-Fi areas on city maps, build Wi-Fi areas near to tourist attractions, and provide a description of the attraction on the Wi-Fi network’s landing page), share the network with small businesses in the area and extend the reach of the network to relevant areas