An improved gateway discovery approach to enhance Internet connectivity for mobile ad hoc networks
HU Zhong-gong · Ha'erbin gongye daxue xuebao · 2009
An improved gateway discovery scheme has been proposed to enhance the Internet connectivity which is deteriorated due to unidirectional links and blind rebroadcast of gateway discovery packets for mobile ad hoc networks. Through exchanging AODV HELLO packet,which includes symmetric neighbor list and asymmetric neighbor list,unidirectional links are removed from global route computation and the broadcast storm also can be relieved simultaneously. Cooperated with the adaptive coverage of gateway discovery packets and the optimized HELLO broadcasting algorithm,the reliability of broadcasting route computation,upon which the Internet gateway discovering is based,can be guaranteed and the profitless broadcasting is inhibited. Performance results of ns-2 simulations show that this improved scheme can adapt itself to the dynamic change of network conditions as well as Internet access demand and provides better Internet connectivity for MANET than others due to its enhanced mechanism.