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In recent year, ad-hoc network technology has gained attention, which consists of not access points and base stations but of wireless nodes. In this network, it is difficult to maintain the whole data flow because of the absence of access points as the network administrator when nodes share the data. This paper proposes the security camera system which has only nodes sharing the taken pictures and has the robustness against the data destroying. The sender node cannot know whether packets are received or not by neighboring nodes in broadcasting because of a unidirectional communication. So in our proposed method, the sender node selects the receiver node from neighboring nodes, and they communicate with each other. On the other hand, neighboring nodes listen to packets between the sender node and the receiver node. After that, this method guarantees nodes of more than 1 which receive a data in broadcasting. We construct the security camera system using wireless nodes with the IEEE 802.15.4 specification and show the performance for security. At last, using the simulator we show the efficiency in the large environment, and conclude this paper.

A Proposal and Evaluation of Security Camera System at a Car Park in an Ad-Hoc Network