VariousservicessupportsaretheprincipalrequirementsoftheFourthGeneration(4G)system;therefore,theneedtoimproveintegrationofheterogeneousnetworksissignificant.ThispaperamendsEVOLUTE(aprojectofInformationSocietyTechnologies(IST))tostrengthenmobilitymanagement.ThispaperusesMulticast-basedMobilit