An Architecture Model of Mobile Ad Hoc Network and

RABSTACT A mobile ad hoc network is a set of mobile nodes connected and communicating with each other without any centralized computing and physical infrastructure. Due to the lack of physical infrastructure, unpredictable resources centralized computing, mobility of the nodes and highly dynamic topology, the QoS provisioning is a challenging task in mobile Adhoc sensor networks. Energy conservation is a critical issue in wireless ad hoc networks since batteries are the only limited-life energy source to power the nodes. Communications are vital for effective management and execution of disaster response and recovery efforts emergency response personnel must be able to exchange information with each other from anywhere, at any time, to successfully fulfill their missions. The National Communications System (NCS) has initiated an effort to improve communication capabilities by first identifying the full range of communication requirements within the disaster area. The NCS has interviewed disaster response managers with experience in the most recent occurrences, to learn specific communication and information system requirements are most critical. A Disaster Area Architecture was designed to meet these requirements.The so-called emergency communications at the time of catastrophic disaster etc. is considered to use ad hoc network effectively. Therefore, it is important to configure emergency communications networks that offer required sufficient QoS in disaster conditions using ad hoc networks. We arrange information and communication required after a disaster from the viewpoint of time elapsed since the disaster. We propose a possible practical communication model for developing ad hoc network configuration technologies.