Computer Science ›› 2016, Vol. 43 ›› Issue (Z11): 275-277.doi: 10.11896/j.issn.1002-137X.2016.11A.064

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Two-hop ACK Message Based Routing Algorithm with Alternative Copy in DTN

WEN Guan-qi, WANG Zhong, GONG Zheng-zheng, ZHANG Shao-lei and WANG Jing   

  • Online:2018-12-01 Published:2018-12-01

Abstract: Aiming at the problem of lacking effective method to dodge routing holes,which makes higher delay in end to end transmission,a forwarding algorithm based on two-hop ACK mechanism with alternative copies(2HAR) was proposed.To evade routing hole area and find a new communication path effectively,when sending a message,a backup that copies of the message will be maintained by a hop node.After receiving a confirmation of ACK,copies of the message will be deleted,or find other forwarding node to send a copy of the message.Results of the simulation indicate the proposed algorithm performs better in terms to the delivery ratio,the average end-to-end delays and the network overheads,which is significative to use in the VANET.

Key words: DTN,Routing hole,Two-hop ACK mechanism,Alternative copy forwarding algorithm,VANET

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