Summary— To provide high-speed data traffic and maintain the promised QoS in wireless systems, IMS has been introduced in 3e networks generation. IMS uses SIP-style means of creating and maintaining sessions. As IMS deals with high speed data transfer, this module can be used for purposes other than QoS catering. Here we propose a technique in which IMS has been used for updating the location of any moving node, it not only gives the exact location of any randomly moving node but it also helps in emergency case where determining the location of any node can be a setback. As a result, the real-time position of any user equipment is obtained and can be used later by the network operator or can be provided for use at its request in the event of a rescue. Key words: IMS, location, travel, emergency1. INTRODUCTION: As cellular networks become more and more advanced, such as 3G, 3.5G and the upcoming 4G, users' requirements for bandwidth, mobility and QoS provision are increasing. To meet users' QoS needs, a new module has been added to cellular systems, namely IP Multimedia Subsystem (IMS). Managing QoS in networks is not a new idea at all; In wired networks, quality of service has been maintained using Session Initiation Protocol (SIP) and the reason why this mechanism is implemented in wireless networks is that much of the bandwidth was not available to the user in cellular networks. But with the rollout of 3G and other new standards, higher data bandwidth is available. Now, not only is media traffic routed using data standards, but traditional voice traffic is also routed using Internet Protocol (IPS). [1] Discusses IMS in the context of user requirements, business requirements, operator requirements, and regulatory requirements. It further highlights the middle of the document......the type of session being created. [3]SIP is an application layer management protocol that can generate, modify, and terminate multimedia sessions. SIP can invite participants to already existing sessions. Media can be deleted or added to a current session. SIP supports name mapping and redirection services transparently. These services support personal mobility, so users can maintain a unique identifier visible from the outside, regardless of their actual location in the network. [3]Session details (e.g. media type) are not represented using SIP. The body of a SIP message includes a description of the session, which is encoded in another protocol format. One of these formats is SDP. This SDP message is transmitted by the SIP message in a manner analogous to an attachment transmitted by an electronic message.. [3]