Wireless Mobile Applications and Services on WLAN Hotspots最新文献_第3页

Fast authentication methods for handovers between IEEE 802.11 wireless LANs IEEE 802.11无线局域网之间切换的快速认证方法

Wireless Mobile Applications and Services on WLAN Hotspots Pub Date : 2004-10-01 DOI: 10.1145/1024733.1024741

M. Bargh, R. Hulsebosch, H. Eertink, A. Prasad, Hu Wang, P. Schoo

引用次数: 103

Proximity services supporting network virtual memory in mobile devices 在移动设备中支持网络虚拟内存的邻近服务

Wireless Mobile Applications and Services on WLAN Hotspots Pub Date : 2004-10-01 DOI: 10.1145/1024733.1024749

E. Lattanzi, A. Acquaviva, A. Bogliolo

引用次数: 4

Interoperability of Wi-Fi hotspots and cellular networks Wi-Fi热点和蜂窝网络的互操作性

Wireless Mobile Applications and Services on WLAN Hotspots Pub Date : 2004-10-01 DOI: 10.1145/1024733.1024750

D. Joseph, B. S. Manoj, C. Murthy

引用次数: 25

LOCATOR: location estimation system For wireless LANs 定位器:无线局域网的位置估计系统

Wireless Mobile Applications and Services on WLAN Hotspots Pub Date : 2004-10-01 DOI: 10.1145/1024733.1024747

Ankur Agiwal, Parakram Khandpur, H. Saran

{"title":"LOCATOR: location estimation system For wireless LANs","authors":"Ankur Agiwal, Parakram Khandpur, H. Saran","doi":"10.1145/1024733.1024747","DOIUrl":"https://doi.org/10.1145/1024733.1024747","url":null,"abstract":"With the wide spread growth of mobile computing devices and local area wireless networks, wireless network providers have started to target the users with value-added services based on the users' location information. Thus, location awareness and user tracking in indoor wireless networks has become an increasingly important issue. To address the issue, we have developed LOCATOR, a radio frequency based system for location estimation of users in indoor wireless networks. Our system works by building a radio map of the network site, which involves taking signal strength samples at various points in the wireless network, and then using this radio map, the system estimates the user's current location from the value of his current observed signal strength. Although the use of an RF-based technique for location estimation is not new, but LOCATOR is unique in the way it builds and manages the radio map to process location queries. Moreover, in addition to using ideas of probability to model the problem, we have devised a multi-level clustering based algorithm that work in conjunction with an interpolation scheme for a more efficient and accurate location estimation. We have tested our system on 802.11b wireless network testbeds and have been able to achieve an accuracy of location estimation to within 4 feet of the actual user location with 90% probabilit.","PeriodicalId":441921,"journal":{"name":"Wireless Mobile Applications and Services on WLAN Hotspots","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131551261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 63

A user-centric analysis of vertical handovers 以用户为中心的垂直移交分析

Wireless Mobile Applications and Services on WLAN Hotspots Pub Date : 2004-10-01 DOI: 10.1145/1024733.1024751

Andrea Calvagna, G. Modica

{"title":"A user-centric analysis of vertical handovers","authors":"Andrea Calvagna, G. Modica","doi":"10.1145/1024733.1024751","DOIUrl":"https://doi.org/10.1145/1024733.1024751","url":null,"abstract":"To implement seamless mobility inside an integrated, multiple (e.g. GPRS/WiFi) access system, a vertical handover policy has to be devised. This is usually done at the mobile terminal, allowing it to be customized from a end-user perspective, in order to fit individual needs/preferences. We propose a new approach in taking vertical handover decisions, which are not anymore exclusively based on the knowledge of the available access networks' characteristics but also on higher level parameters which fall in the transport and application layers. To this extent, in this paper a model has been realized and simulations have been run in order to evaluate the impact of the vertical handover and its frequency on a set of typical user's network applications/services. We also take into account the user preferences in terms of cost and quality of service. We believe this approach reflects the optimal settings from the user's point of view with regard to his running services and applications. Our aim is to understand how to define a metric to be used in order to devise a solution which should try to balance the overall <i>cost</i> of vertical handovers with the actual benefits they bring to actual user's networking needs. This way, each mobile user could autonomously apply the handover decision policy which is more convenient to his specific needs.","PeriodicalId":441921,"journal":{"name":"Wireless Mobile Applications and Services on WLAN Hotspots","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116928055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 81

A peer-to-peer approach to wireless LAN roaming 一种点对点的无线局域网漫游方法

Wireless Mobile Applications and Services on WLAN Hotspots Pub Date : 2003-09-19 DOI: 10.1145/941326.941329

E. C. Efstathiou, George C. Polyzos

{"title":"A peer-to-peer approach to wireless LAN roaming","authors":"E. C. Efstathiou, George C. Polyzos","doi":"10.1145/941326.941329","DOIUrl":"https://doi.org/10.1145/941326.941329","url":null,"abstract":"We make the case for a Global Confederation of Peer-to-Peer (P2P) Wireless Local Area Networks. A P2P Wireless Network Confederation (P2PWNC) is a community of administrative domains that offer wireless Internet access to each other's registered users. The ubiquitous Internet access that the roaming users of these domains could enjoy compensates for their home domain's cost of providing access to visitors. Existing roaming schemes utilize central authorities or bilateral contracts to control access to resources. In contrast, a P2PWNC forms a pure P2P community in which participating domains are autonomous entities. Domains make independent decisions concerning the amount of bandwidth they contribute. As a result, similarly to existing P2P systems, a P2PWNC will suffer from \"free-riding\" if no incentive mechanisms exist to ensure that domains offer the amount of resources that is economically justified. Flexible rules on reciprocity can be set to delimit domain actions and encourage domains to provide in order to consume. In this paper, we present several aspects of the P2PWNC requirements and design. We outline several P2PWNC implementation issues relating to user privacy and the confederation's real-world deployment. We also describe the P2PWNC prototype that we developed.","PeriodicalId":441921,"journal":{"name":"Wireless Mobile Applications and Services on WLAN Hotspots","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132656839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 47

Challenge: ubiquitous location-aware computing and the "place lab" initiative 挑战:无处不在的位置感知计算和“地点实验室”倡议

Wireless Mobile Applications and Services on WLAN Hotspots Pub Date : 2003-09-19 DOI: 10.1145/941326.941331

Bill N. Schilit, A. LaMarca, G. Borriello, W. Griswold, David W. Mcdonald, Ed Lazowska, Anand Balachandran, Jason I. Hong, Vaughn Iverson

引用次数: 190

Global growth of open access networks: from warchalking and connection sharing to sustainable business 开放接入网络的全球增长:从战争标记和连接共享到可持续业务

Wireless Mobile Applications and Services on WLAN Hotspots Pub Date : 2003-09-19 DOI: 10.1145/941326.941330

R. Battiti, R. Cigno, F. Orava, B. Pehrson

{"title":"Global growth of open access networks: from warchalking and connection sharing to sustainable business","authors":"R. Battiti, R. Cigno, F. Orava, B. Pehrson","doi":"10.1145/941326.941330","DOIUrl":"https://doi.org/10.1145/941326.941330","url":null,"abstract":"This paper discusses the evolution of W-LAN starting from the mere extension of LAN services indoors, through the widespread diffusion of outdoors coverage with free and often un-authorized access, to the business models supporting their evolution to public coverage HotSpots. Besides, the idea of Open Access Networks (OANs) going beyond wireless HotSpots to become a shared access infrastructure fostering service operators competition is introduced and discussed.The concept of Open Access Networks (OAN) is detailed, highlighting its difference with the more traditional model of vertical integration of the access network into the global service. Arguing on OANs development, it is shown how to support the quick and smooth evolution of the infrastructure toward a widespread and reliable communication support. References to existing projects, starting from StockholmOpen.net and Wilma are given.Business models are discussed by mentioning the different actors, the market organization and different organization forms.The final part of the paper is devoted to technical challenges such as access control, security, privacy, roaming, resource exploitation and service differentiation.","PeriodicalId":441921,"journal":{"name":"Wireless Mobile Applications and Services on WLAN Hotspots","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122919415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 24

Enhancement of a WLAN-based internet service in Korea 加强韩国的无线局域网网络服务

Wireless Mobile Applications and Services on WLAN Hotspots Pub Date : 2003-09-19 DOI: 10.1145/941326.941333

Youngkyu Choi, Jeongyeup Paek, Sunghyun Choi, G. Lee, Jae Hwan Lee, Hanwook Jung

引用次数: 11

A generic business model for WLAN hotspots: a roaming business case in The Netherlands WLAN热点的通用业务模型:荷兰的漫游业务案例

Wireless Mobile Applications and Services on WLAN Hotspots Pub Date : 2003-09-19 DOI: 10.1145/941326.941339

J. Verhoosel, R. Stap, A. Salden

{"title":"A generic business model for WLAN hotspots: a roaming business case in The Netherlands","authors":"J. Verhoosel, R. Stap, A. Salden","doi":"10.1145/941326.941339","DOIUrl":"https://doi.org/10.1145/941326.941339","url":null,"abstract":"We present a generic business model for WLAN hotspots that comprises a role, resource and revenue model of a value network. We distinguish roles like customer, hotspot provider, hotstpot owner, device owner, device provider, location owner, portal providers (e.g. internet service providers, corporate network providers), enabling service providers (e.g. authentication and authorization), network management and maintenance providers, and mobile and data network providers. In a hotspot enterprise such roles perform certain functions in relation to themselves or to each other: they create internal and external added-value services according to a role model. These services make use of physical, ICT and organizational infrastructure that consists of (in)tangible assets such as location, access devices, networks and expertise of people. In addition, we describe the instantiation of the generic business model into a roaming business case between ProRail - NS Dutch Railways, the University of Twente and KPN - Mobile. The business case describes seamless network level roaming. The bases for the case is formed by an already rolled-out WLAN hotspot network of 600 base stations at the campus of the university and a planned roll-out of a WLAN hotspot along a train trajectory nearby the campus.","PeriodicalId":441921,"journal":{"name":"Wireless Mobile Applications and Services on WLAN Hotspots","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115531011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11