2008 Ninth International Conference on Mobile Data Management Workshops, MDMW最新文献_第3页

Context-Based Privacy Protection for Location-Based Mobile Services using Pseudonyms 基于上下文的假名位置移动服务隐私保护

2008 Ninth International Conference on Mobile Data Management Workshops, MDMW Pub Date : 2008-04-27 DOI: 10.1109/MDMW.2008.5

J. Zeiss, O. Jorns

引用次数: 6

Adaptive Caching Scheme for Heterogeneous Mobile Devices and Wireless Networks: a Service Oriented Perspective 异构移动设备和无线网络的自适应缓存方案:面向服务的视角

2008 Ninth International Conference on Mobile Data Management Workshops, MDMW Pub Date : 2008-04-27 DOI: 10.1109/MDMW.2008.1

F. Ye, Qing Li, Enhong Chen

{"title":"Adaptive Caching Scheme for Heterogeneous Mobile Devices and Wireless Networks: a Service Oriented Perspective","authors":"F. Ye, Qing Li, Enhong Chen","doi":"10.1109/MDMW.2008.1","DOIUrl":"https://doi.org/10.1109/MDMW.2008.1","url":null,"abstract":"The upcoming 3G environment is surely of heterogeneous mobile devices and heterogeneous wireless networks. Many applications such as multimedia streaming, online games and peer-to-peer file sharing will be widely used in such an environment in which users can have their own individual choices of devices and services. In particular, users can carry heterogeneous mobile devices with different cache sizes, transmission range, and even transmission latency. These devices not only can get services from different mobile support stations (MSS) (depending on the wireless networks they have chosen), but also can form a mobile peer-to-peer (P2P) network to provide services to each other. For such a complex mobile network environment, an effective cache mechanism that can handle the heterogeneous properties is required. In this paper, we propose a flexible cache scheme which is adaptive to the actual device condition and that of its surrounding environment (containing other mobile peers and MSS). We extend the notion of \"caching\" into a more ambitious concept of \"intelligent cache\" adaptive to the pervasive computing environment. The main techniques adopted by our caching mechanism include adaptive data caching and least cost caching path generating, which can then be further combined with a data replication via clustering technique. We term such a resulting mechanism as blended caching scheme and the services provided by the scheme as adaptive caching services (ACS). To better utilize and exploit our caching scheme, an ACS-oriented network layer is also designed. Simulation experiments and analytical studies are carried out to evaluate the effectiveness of our adaptive cache scheme.","PeriodicalId":242324,"journal":{"name":"2008 Ninth International Conference on Mobile Data Management Workshops, MDMW","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129525436","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

Locally Differential Map Update Method with Maintained Road Connections for Telematics Services 面向远程信息服务的道路连接保持的局部差分地图更新方法

2008 Ninth International Conference on Mobile Data Management Workshops, MDMW Pub Date : 2008-04-27 DOI: 10.1109/MDMW.2008.13

A. Asahara, M. Tanizaki, M. Morioka, S. Shimada

{"title":"Locally Differential Map Update Method with Maintained Road Connections for Telematics Services","authors":"A. Asahara, M. Tanizaki, M. Morioka, S. Shimada","doi":"10.1109/MDMW.2008.13","DOIUrl":"https://doi.org/10.1109/MDMW.2008.13","url":null,"abstract":"Map databases for car navigation systems loaded with hard disk drives are rewritable. Thus, the ability to update map databases in such systems is expected. Furthermore, because telematics services are available through cell phones with reasonable costs, it is also becoming possible to download new information into car navigation systems anywhere. Hence, drivers want to update map databases in their terminals through telematics services. However, the volume of the entire map database is too large to be distributed through cell phones. Therefore, only changed data of the map database are distributed in differential map updates. However, even considering the reduction, the data size is still too large to distribute through cell phones. A Locally Differential Map Update (LDMU) is effective to reduce the data size, because with this method, a map is only partially updated. However, LDMU causes disconnection of the road network. Therefore, we propose Connection Maintained Locally Differential Map Update (CM-LDMU). This involves partially updating a map while maintaining the road network. In experiments with this method, less than 250 KB of data was required to update 20 times 20 km2 as wide as a medium-sized city. Thus, the feasibility of telematics map updating services is demonstrated.","PeriodicalId":242324,"journal":{"name":"2008 Ninth International Conference on Mobile Data Management Workshops, MDMW","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128714595","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: 8

Contact-based Notation for Describing Rules on Sensor Nodes 基于接触的传感器节点规则描述方法

2008 Ninth International Conference on Mobile Data Management Workshops, MDMW Pub Date : 2008-02-27 DOI: 10.1109/MDMW.2008.3

T. Kanda, Y. Yanagisawa, M. Imai, Y. Kishino, T. Maekawa, T. Okadome

引用次数: 0