Integration of location update mechanism in IP multimedia subsystem

To provide high speed data traffic and maintain promised QoS in wireless systems IMS was introduced in 3rd generation networks. IMS uses SIP style session creation and maintaining means. As IMS deals with high rate data transfer so this module can be used for purposes other than catering QoS. Here we propose a technique in which IMS has been used for location update of any mobile node, it not only gives exact location of any randomly moving node but it also helps in emergency state where location determination of any node can be a setback. As a result real time position of any user equipment is obtained which can be further used by network operator or can be provided to use on his/her request in rescue cases.