LOCATION BASED SERVICE

Location Based Service

Introduction1

History and Background of Location Based Service (LBS)1

Technology to Distribute and control Location based service2

Communication Model of Location Based Service3

LBS Technologies4

Handset Based GPS4

Forward Link Control4

Observed time difference and Enhanced observed time difference5

Cellular network Based Cell ID5

Time of Arrival (TOA) and Time Difference of Arrival (TDOA)5

Multiple analysis6

Location Tracking6

Location Awareness7

Advantages of LBS7

Disadvantages8

Security Issues in LBS9

Future Prospects10

Case Studies11

Case111

Case 314

Case 415

Summary of case studies16

Conclusion17

References18

Location Based Service

Introduction

LBS abbreviation of Location Based service refereed as position dependent service which means a that a service can be easily found on the foundation of its described location. LBS provide knowledge where a mobile device or a user is present which provides relevant, contextual information to users. LBS is used to, recognize the location of a user, or any object for E.g.| Discovering or locating any bank, which is nearby, or a famous hotel, and a restaurant. It is also used to track a parcel or a vehicle (Smith, n.d, p.03). The service provider is the main component which offers location based service to the mobile user. It is in charge for the entire data processing, and it can either be the owner of the data or make use of another provided data (Sanna & Vacca, 2003, p. 01)

History and Background of Location Based Service (LBS)

Real time stolen vehicle services were first introduced by the International Teletrac Systems which was afterwards called PacTel Teletrac in 1990. Simultaneously the development of location based service began that transmits the information about location based goods.1n 1996 the first digital Timestamp server was designed by Todd Glassey for email and created “GeoSpatial Keying” by means of location to access the data or unlock any services. This digital evidence system was proceeded by Glassey, which was founded on, the location and digital object control. In 1996, , the US Federal Communication Commission issued a rule that required all the US mobile companies to locate emergency callers. (Adams, at.el, n.d, pp.01-02) Christopher KIngdon of Ericsson in 1997 handed over the LCS report to the GSM group ETSI and the ANSI. This group selected positioning methods and LCS was thereafter known as Location Based Services (LBS). The Patent of first Digital Location Based Service in 1999 was filled in the US and was issued after nine proceedings in March 2002. From the world's twelve largest telecom operators, Ericsson, Motorola and Nokia it was approved in 2000, and it jointly created the Location Interoperability Forum Ltd (LIF). It specified the Mobile Location Protocol (MLP), which is a link between the telecom network and an LBS application running on the server. (Adams, at.el, n.d, pp.01-02)

Location based service is a wireless service that uses the geographical information to serve the user. It clearly describe LBS as an intersection of three technologies. It is formed by new information and communication technologies (NICTS), internet and geographic information system (GIS) with spatial data base. Location based service provides the possibility of two way interaction. Through LBS, the user informs the provider his actual context, information ...