Emerging mobile applications will need location information for delivering the right services to right persons at right places and time. A location-based service (LBS) is an information and entertainment service, accessible with mobile devices through the mobile network and utilizing the ability to make use of the geographical position of the mobile device. If, LBS service needs any specific hardware for delivering it, then it may be an optional choice for users. But with wireless communication technology user get access Location-Based services with their User Equipments like Mobile. Such an emerging Wireless Communication technology is 3rd Generation Partnership Project (3GPP) has proposed the IP Multimedia Subsystem (IMS) as a key element in the UMTS architecture supporting multimedia services in the packet switched domain.
Keywords: LBS; 3GPP IMS; Positioning; GIS, GPS
[...] If positioning delivers a spatial location, it will be mapped onto a descriptive location in order to be interpretable by the LBS user Location Service (LCS) LCS should be distinguished from LBS as it exclusively deals with the localization of target, and also makes the resulting location data available to 4. IMS Location Server (ILS) The ILS is designed as a generic SIP Application Server located in the IMS Service Layer. Methods for determining user positions are not implemented within ILS; rather, ILS is responsible for delegating the location request to the positioning system. [...]
[...] Kota, Kaveh Pahlavan, Ramón Agustí Location-based Services Fundamentals and Operation by Axel K¨upper 6 Terminal-Centric Location Services in the IP Multimedia Subsystem by Rudolf Pailer, Florian Wegscheider, Joachim Fabini Acronym LBS: Location Based Services 3GPP: 3rd Generation Partnership Project IMS: IP Multimedia Subsystem VAS: Value Added Services GIS: Geographical Information System GPS: Global Positioning System Referred Articles Location Based Services for Mobiles: Technologies and Standards by Shu Wang, Jungwon Min, Byung K. Yi Alcatel End-to-end Location-based services solution: Technology Whitepaper by [...]
[...] Keywords: LBS; Positioning; GIS, GPS 3GPP IMS; 3GPP IP Subsystem 3GPP and Generation Project) Multimedia 3GPP2 (3rd Partnership As shown on Figure the IMS consists of 3 layers: 1. Service Layer 2. Control Layer 3. Connectivity Layer Of the most significant protocols used in the IMS, we point out the Session Initiation Protocol (SIP) chosen by 3GPP as the protocol for session establishment, modification, and release. The Service Layer comprises application and content servers to execute valueadded services for the user. [...]
[...] User Location in LBS User Plane Location allows a client on the mobile device to communicate with a location server across a secure IP tunnel set up over the operator's existing data network. No expensive upgrades to existing signaling networks are required. By bypassing the control plane designed to handle voice calls and everything that entails, User Plane Location Architectures allow for low cost implementation and faster time-tomarket. User Plane Location is not dependent on the network architecture or radio access technology. [...]
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