发明名称 System for discovering and maintaining geographic location information in a computer network to enable emergency services
摘要 A system automatically discovers and maintains geographic location information for entities and devices making up a computer network. The system preferably includes a computing unit and a geographic location generator, such as a Global Positioning System (GPS) receiver. The computing unit includes a location discovery entity and a message generator. The GPS receiver, which is mounted to and in communication with the computing unit, may be augmented with an inertial navigation unit to facilitate the generation of location information inside of buildings where GPS signals can be difficult to receive. The computing unit further includes a network communications facility so that it can communicate with one or more network devices, such as a network switch. The switch includes a location recording/reporting entity and a location database. Physical coordinates of network entities or devices are obtained by the GPS receiver and/or inertial navigation unit and transmitted to the network switch, and the recording/reporting entity stores the physical coordinates at the location database.
申请公布号 US7194354(B1) 申请公布日期 2007.03.20
申请号 US20030697896 申请日期 2003.10.30
申请人 CISCO TECHNOLOGY, INC. 发明人 ORAN DAVID R.;GAI SILVANO
分类号 G06F3/00;G01C21/00;G01S5/00;G01S5/14;G01S19/42;H04M1/56;H04Q7/38 主分类号 G06F3/00
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