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Recently, it is desired that realization of data collection without aware the data location by applying NDN, to WSN. Applying to NDN to WSN, however, is needed to consider the different situation compared with the wired network. The broadcast nature of wireless communication, induces the multiple reception of interest packets. Hence, in order to reduce needless transmissions, relay nodes among the requestor and contents holder, must selects appropriate next hop node. In this paper, we propose new forwarding method for selecting appropriate route on NDN under WSN environment. The proposal reduces the redundant transmissions by selecting proper route in accordance with the network conditions.

Recently, IoT (Internet of Things) devices are disseminated into various kind of life circumstances. In network which consists of tremendous nodes, WSN (Wireless Sensor Network) attracts the attention of manufacturers who want to build data collecting network for realizing wealthy life for human. WSN can establish wireless network for relaying the obtained data from sensor nodes to the sink node while keeping low development cost. Furthermore, when the technology of NDN (Named Data Network) is applied to the WSN, it becomes more easy to obtain the desired data without concern for the location of sensor nodes. NDN is known as one of the content oriented network technology for data collection method without any regard to the nodes' location and number of nodes. In addition, it is possible to deliver the sensing data by utilizing the cached one on intermediate routers. However, there are no enough works with regarding to NDN on WSN. Hence, in this paper, we discuss the efficient implementation of NDN algorithm for WSN in order to improve the feasibility of the NDN on WSN.

IEEE802.11 which is widely used wireless LAN standard, degrades its broadcast performance by existence of hidden terminals. Then, we have proposed RTB–DR (RTS/CTS for Broadcast with Directional Receiving) for improving broadcast performance on single hop situation. RTB–DR can effectively improve receiving performance by introducing directional antenna while keeping simplicity of transmission sequence. In this paper, in order to increase broadcast range without additional transmission delay, we propose new 2–hop MAC level broadcast protocol, named HRB (High speed Relay Broadcast). HRB realizes 2–hop broadcast by broadcast relay nodes selected from sender’ neighbor. The results of computer simulation confirm that, HRB achieves 1.5 times to 4 times higher 2–hop broadcast ratio, even though its smaller transmission period.