TOWARDS ROBUST AND RELIABLE GROUP COMMUNICATION IN AD HOC MOBILE ENVIRONMENT

Robust and reliable group communication plays a major role in developing distributed mobile application in which unannounced disconnections will occur frequently due to the mobility of the nodes which take part in mobile applications. The main objective is to achieve robust and reliable group communication in mobile ad hoc network based on a guarantee protocol that always considers the transmitting range, location, speed and direction of mobile nodes to ensure successful delivery of the message between the group members by calculating accurate delivery time. The consistent view of application state within the group of mobile nodes participating in application execution is necessary to achieve reliable message delivery. To solve any inconsistency during the group split or merge operation, when mobile hosts go out of the transmitting range, message delivery is assured and decided by guarantee protocol whether to deliver the message or not to avoid any inconsistent state. The guarantee protocol has been analyzed extensively to ensure the efficient communication among the participating hosts despite the high mobility environment and the mobility induced link failure cause inconsistent data and unrecoverability.