Core Selection and Core Migration Techniques in Wireless Ad Hoc Networks

A number of application level multicast protocols have been proposed for core selection and core migration in Mobile Ad Hoc Networks. Core migration is necessary to minimize any disruptions on the transmission of data due to the changes in tree structure and to achieve improvement in the delivery of media streams in multicast group. In this paper, the broad review of literature on application level of core selection and core migration is discussed. Further, the performance of various techniques viz. centroid based core selection and random based core selection have investigated. On the performance comparison of the core selection techniques, various techniques are proposed for the migration of core if needed.