Location based services for next generation wireless mobile networks
Location based services for next generation wireless mobile networks
复制标题
下一代无线移动网络的基于位置的服务
DOI：
10.1109/vetecs.2003.1207173
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
S. Tekinay
中科院分区：
文献类型：
--
作者：
Woo;S. Tekinay
本文研究了无线网络如何为移动的用户提供基于位置的服务。我们假设每个移动的能够使用GPS和室内地理定位进行自我地理定位[K. Pahlavan等人，2002年2月]。无线网络从移动设备收集地理位置信息，并将该信息提供给应用服务，使得可以为每个移动的用户定制服务。无线网络中的主要挑战是跟踪移动的用户的地理位置，以便应用服务能够保持服务质量（QoS）。通常，服务质量取决于移动的终端多久更新一次它们的地理位置。由于地理位置更新需要电池电力和无线电资源，因此优化地理位置更新频率至关重要。在本文中，我们提出的地理位置更新计划，最大限度地减少更新频率，同时满足应用服务的QoS。对于案例研究，我们考虑基于位置的交通报告服务（LBS-TR）和基于位置的导航服务（LBS-NS）。在LBS-TR中，及时通知即将进入严重拥堵的高速公路的移动的用户，使得移动的用户可以避免交通拥堵。在LBS-NS中，向移动的用户提供针对用户的地理位置定制的导航指令。导航指令的粒度随着用户从高速公路移动到当地街道以及从当地街道移动到建筑群而改变。
We study how wireless network can support location based services (LBS) a to mobile users. WE assume that each mobile is capable of self-geolocation using GPS and indoor geolocation [K. Pahlavan et al., Feb 2002]. The wireless network collects the geolocation information from mobiles and provides this information to application service so that the services can be custom-tailored for each mobile user. The main challenge in wireless network is to keep track of geolocation of mobile users so that the application service can maintain the quality of the service (QoS). In general, the quality of service depends on how often mobile terminals update their geolocation. Since geolocation update requires battery power and radio resource, optimizing the geolocation update frequency is critical. In this paper, we present geolocation update schemes that minimize the update frequency while satisfying the QoS of application service. For case study, we consider location based traffic report service (LBS-TR) and location based navigation service (LBS-NS). In LBS-TR, mobile users who are about to enter heavily jammed highways are informed in a timely manner so that the mobile users can avoid traffic congestion. In LBS-NS, mobile users are provided with navigation instructions that are custom-tailored to the geolocation of the users. The granularity of navigation instruction changes as the user moves from highway to local street and from local street into building complex.