Wireless Mobile Applications and Services on WLAN Hotspots最新文献_第2页

Context-aware privacy protection with profile management 具有配置文件管理的上下文感知隐私保护

Wireless Mobile Applications and Services on WLAN Hotspots Pub Date : 2006-09-29 DOI: 10.1145/1161023.1161032

A. Mitseva, M. Imine, N. Prasad

引用次数: 29

Inter-Access point communications for distributed resource management in 802.11 networks 802.11网络中分布式资源管理的Inter-Access point通信

Wireless Mobile Applications and Services on WLAN Hotspots Pub Date : 2006-09-29 DOI: 10.1145/1161023.1161026

E. G. Villegas, Lluís Faixó, R. V. Ferré, J. Aspas

引用次数: 12

A scalable framework for wireless network monitoring 一个可扩展的无线网络监控框架

Wireless Mobile Applications and Services on WLAN Hotspots Pub Date : 2004-10-01 DOI: 10.1145/1024733.1024745

C. Ho, K. Ramachandran, K. Almeroth, E. Belding-Royer

{"title":"A scalable framework for wireless network monitoring","authors":"C. Ho, K. Ramachandran, K. Almeroth, E. Belding-Royer","doi":"10.1145/1024733.1024745","DOIUrl":"https://doi.org/10.1145/1024733.1024745","url":null,"abstract":"The advent of small form-factor devices, falling hardware prices, and the promise of untethered communication is driving the prolific deployment of wireless networks. The monitoring of such networks is crucial for their robust operation. To this end, this paper presents VISUM, a scalable framework for wireless network monitoring. VISUM relies on a distributed set of agents within the network to monitor network devices and store the collected information at data repositories. VISUM's key features are its extensibility for new functionality, and its seamless support for new devices and agents in the monitoring framework. These features enable network operators to deploy, maintain, and upgrade VISUM with little effort. VISUM can also visualize collected data in the form of interactive network topology maps as well as real-time statistical graphs and reports. These visualizations provide an intuitive, up-to-date, and useful overview of a wireless network. We have implemented VISUM and used it to monitor a wireless network deployment at UC-Santa Barbara. In this paper, we describe the architecture of VISUM and report on the performance of the monitored network using information collected by VISUM.","PeriodicalId":441921,"journal":{"name":"Wireless Mobile Applications and Services on WLAN Hotspots","volume":"126 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":"123275627","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: 44

Network selection and discovery of service information in public WLAN hotspots 无线局域网公共热点的网络选择和业务信息发现

Wireless Mobile Applications and Services on WLAN Hotspots Pub Date : 2004-10-01 DOI: 10.1145/1024733.1024744

Yui-Wah Lee

{"title":"Network selection and discovery of service information in public WLAN hotspots","authors":"Yui-Wah Lee","doi":"10.1145/1024733.1024744","DOIUrl":"https://doi.org/10.1145/1024733.1024744","url":null,"abstract":"In a public WLAN hotspot, a roaming mobile terminal (MT) may be within radio range of more than one access point (AP), each of which may or may not have roaming agreements with the service provider of the user of the MT. In this case, the MT may need to discover some service information before it can make an intelligent network-selection decision. The most critical is roaming information; while other information such as security policies, price, AP workload may also be useful. Currently, roaming information is typically provisioned on the MTs as static roaming tables or roaming lists. However, this approach may not scale well when there are millions of hotspots globally. Addressing this shortcoming, recently several solutions have been proposed by different groups. In this paper, we contrast these solutions, and propose our own solution called Roaming Information Code (RIC), which can be transported as SSID or a new Information Element of the 802.11 standard. RIC is scalable and can be fully backward compatible with existing APs (if transported as SSID). Furthermore, it does not hinder fast handoffs. In the second half of the paper, we will also discuss two other schemes addressing the other service information: a scheme called RIC-VAP for provider-specific security information; and a scheme that allows an AP to announce price and workload information.","PeriodicalId":441921,"journal":{"name":"Wireless Mobile Applications and Services on WLAN Hotspots","volume":"22 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":"114867975","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: 30

SOWER: self-organizing wireless network for messaging 播种者:用于消息传递的自组织无线网络

Wireless Mobile Applications and Services on WLAN Hotspots Pub Date : 2004-10-01 DOI: 10.1145/1024733.1024735

M. Félegyházi, Srdjan Capkun, J. Hubaux

引用次数: 2

Proactive context transfer in WLAN-based access networks 基于wlan的接入网中的主动上下文传输

Wireless Mobile Applications and Services on WLAN Hotspots Pub Date : 2004-10-01 DOI: 10.1145/1024733.1024742

H. Duong, A. Dadej, S. Gordon

{"title":"Proactive context transfer in WLAN-based access networks","authors":"H. Duong, A. Dadej, S. Gordon","doi":"10.1145/1024733.1024742","DOIUrl":"https://doi.org/10.1145/1024733.1024742","url":null,"abstract":"In recent years, many protocols have been developed to support mobility of wireless network nodes, e.g. Mobile IP suite of protocols designed to support IP routing to mobile nodes. However, support for truly seamless mobility requires more than just routing; every service associated with the mobile user needs to be transferred smoothly to the new access network. In this paper, we consider the problem of transferring service state (context) at both the link and IP layers. Based on the rate of SNR change in the wireless access channel, we propose a scheme that proactively transfers context information associated with the mobile user. The proposed scheme estimates the best moment in time for transferring context information, to assure the shortest waiting time of the transferred context at the new access network. We also propose and describe a new concept, forced handover, helpful in proactive transfer of context information when the mobile node moves from one access sub network to another. We present preliminary simulation results and a discussion on the performance of the proposed scheme. The scheme is shown to be helpful in ensuring seamless mobility, while the number of unnecessary handovers resulting from the proactive nature of the scheme can be kept at a controllable level.","PeriodicalId":441921,"journal":{"name":"Wireless Mobile Applications and Services on WLAN Hotspots","volume":"32 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":"123344789","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: 13

Reputation-based Wi-Fi deployment protocols and security analysis 基于信誉的Wi-Fi部署协议和安全分析

Wireless Mobile Applications and Services on WLAN Hotspots Pub Date : 2004-10-01 DOI: 10.1145/1024733.1024738

N. Salem, J. Hubaux, M. Jakobsson

引用次数: 32

Smart edge server: beyond a wireless access point 智能边缘服务器:超越无线接入点

Wireless Mobile Applications and Services on WLAN Hotspots Pub Date : 2004-10-01 DOI: 10.1145/1024733.1024739

G. Manjunath, T. Simunic, V. Krishnan, J. Tourrilhes, D. Das, V. Srinivasmurthy, A. McReynolds

{"title":"Smart edge server: beyond a wireless access point","authors":"G. Manjunath, T. Simunic, V. Krishnan, J. Tourrilhes, D. Das, V. Srinivasmurthy, A. McReynolds","doi":"10.1145/1024733.1024739","DOIUrl":"https://doi.org/10.1145/1024733.1024739","url":null,"abstract":"Wireless access at cafes, airports, homes and businesses have proliferated all over the globe with several different Wireless Internet Service Providers. Similarly, digital media has created a paradigm shift in media processing resulting in a complete change in media usage models, revamped existing businesses and has introduced new industry players. We believe there is a tremendous opportunity for application and system services at the intersection of the above two domains for exploiting the wireless connectivity to provide ease of use in handling media. In this paper, we propose a feature-rich, secure wireless service delivery framework over enhanced public access points (called Smart Edge Servers), which provides the right platform for deployment of specialized services to the mobile users. The Smart Edge Server provides secure wireless access to the clients, has sophisticated media handling and storage capabilities and uses advanced techniques to manage resources available to it, such as bandwidth, power and the type of connectivity. A prototype implementation of our Smart Edge Server has been built that implements all the features discussed above.","PeriodicalId":441921,"journal":{"name":"Wireless Mobile Applications and Services on WLAN Hotspots","volume":"98 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":"129283921","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: 0

Stateful publish-subscribe for mobile environments 用于移动环境的有状态发布-订阅

Wireless Mobile Applications and Services on WLAN Hotspots Pub Date : 2004-10-01 DOI: 10.1145/1024733.1024737

M. Ionescu, I. Marsic

引用次数: 13

Supporting real-time speech on wireless ad hoc networks: inter-packet redundancy, path diversity, and multiple description coding 支持无线自组织网络上的实时语音:分组间冗余，路径多样性和多个描述编码

Wireless Mobile Applications and Services on WLAN Hotspots Pub Date : 2004-10-01 DOI: 10.1145/1024733.1024736

Chi-hsien Lin, Hui Dong, Upamanyu Madhow, A. Gersho

{"title":"Supporting real-time speech on wireless ad hoc networks: inter-packet redundancy, path diversity, and multiple description coding","authors":"Chi-hsien Lin, Hui Dong, Upamanyu Madhow, A. Gersho","doi":"10.1145/1024733.1024736","DOIUrl":"https://doi.org/10.1145/1024733.1024736","url":null,"abstract":"We consider the problem of supporting real-time traffic over packetized wireless ad hoc networks. Our specific emphasis is on speech, since this is a critical application in many scenarios such as emergency deployment of ad hoc networks. Standard retransmission-based Medium Access Control (MAC) strategies are poorly matched to speech applications, because the payload size for speech as well as for MAC-layer acknowledgements (ACKs) is small compared to the packet header, which contains a large synchronization preamble. In this paper, we show that inter-packet redundancy is significantly more efficient than traditional MAC layer retransmissions, in terms of both network capacity and end-to-end delay. The key observations regarding our design and results are as follows. Because of the small payloads, introducing redundancy across packets only increases the packet transmission time slightly, and hence has negligible impact on the packet collision rate. Thus, we obtain large gains from redundant transmission essentially \"for free.\" Because of the large packet header, elimination of ACKs leads to substantial bandwidth savings. Overall, a combination of inter-packet redundancy (at the MAC layer), path diversity (at the network layer), and multiple description source coding (at the application layer), is shown to provide significant improvements in bandwidth efficiency and delay.","PeriodicalId":441921,"journal":{"name":"Wireless Mobile Applications and Services on WLAN Hotspots","volume":"53 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":"130785537","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: 22