A Distributed IP Address Assignment Scheme in Ad Hoc Networks

• Main Authors: Li-Hsiang Chan, 詹立翔
• Other Authors: Jang-Ping Sheu
• Format: Others
• Language: en_US
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/53596823947534749541

碩士 === 國立中央大學 === 資訊工程研究所 === 92 === In traditional wired networks, nodes are assigned IP-related information by a centralized server like Dynamic Host Configuration Protocol (DHCP) server, but it is not suitable for Mobile Ad Hoc Networks (MANETs). Due to each node will move and leave the network dynamically, the DHCP server cannot guarantee to be accessed by each node in the MANET. In this thesis, we will present a scheme to assign IP-related information to each new-joined node. Some nodes are assigned as coordinators and responsible for assigning an IP address to a new-joined node in the network. A new-joined node will use the exchanged hello messages to find the closest coordinator and to get a new IP address from the coordinator. In order to maintain the IP-address pools efficiently, the distributed coordinators are organized as a tree topology named virtual C-tree by exchanging the hello messages. The tree is used to backup the coordinators IP-address pools, collection IP addresses from leaving nodes, and record the IP-address pools status. We evaluate the performance of the proposed scheme through simulations and the results show that our protocol has low control messages overhead on invoking an IP address from a new-joined node and IP address maintenance from the leaving nodes.