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The location of node is a research focus in wireless sensor networks (WSNs), and it is the foundation of the service based on the node location. In this paper, we propose a new localization method to improve the moving-baseline localization(MBL) performance by using second-order system. This method takes advantage of precise properties of MBL. We improve the localization accuracy by accurate fitting...
Geometry-based localization algorithms come to the forefront with its unique superiority. This paper proposes a Delaunay triangulation based localization scheme (DBLS), which takes use of received signal strength indicator(RSSI) from anchor nodes. Based on RSSI, the Delaunay area is generated. The unknown node determines which Delaunay area it belongs to and then record it down. After several iteration,...
Energy balance is a critical issue in wireless sensor networks. Several mixed data transmission (MDT) schemes have been proposed to achieve energy balance. However, most existing works are lack of theoretical study, especially understanding the relationship between network-wide energy balancing and lifetime optimization. In this paper, we conduct comprehensive theoretical analysis to the two-level...
For communication between the cluster head node (CHN) and the distant data fusion center (DFC) with the cooperation of intra-cluster nodes in wireless sensor networks (WSNs), reliable handling of packets by the cooperative node (CN) is difficult to ensure. In this paper, we propose a novel CN selection scheme based on trust for WSNs. This scheme can choose one of high trust nodes to assist in the...
Existing secure network reprogramming protocols for wireless sensor networks (WSNs) target the efficient authentication of code packets, but none of them provide the verification of control packets which are vulnerable to Denial of Service (DoS) attacks. In this paper, we propose the secure and DoS-resistant network reprogramming scheme based on CPK (Combined Public Key) that can verify control packets...
Cross-layer design has been proposed as a promising paradigm to tackle various problems of wireless communication systems. Recent research has led to a variety of protocols that rely on intensive interaction between different layers of the classical layered OSI protocol architecture. These protocols involve different layers and introduce new ideas how layers shall communicate and interact. In existing...
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