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Named Data Networking (NDN) has been drawing increasing attention in both academia and industry. Data forwarding is one of the key issues in relation to efficient content retrieval in named data DTN. In this paper, we propose an activeness-based data forwarding protocol, named as ADF, to support efficient content retrieval in named data delay tolerant networks. Using the real movement trajectory data...
In the communication process, when channel capacity is large enough, channel quality is decided by the wrong acceptance sequence of data packet due to channel interfere, communication limited and so on. This paper surveyed the effect of channel on data sequence reception. The simulation show the relationship between acceptance sequence and channel quality.
This paper proposes a novel signaling compression method to meet the requirement of the MCPTT call service under limited physical carrier capacity of carrier aggregated broadband system. In addition, we design an architecture that hosts compression proxies on both the user and network side without the modification of core network of LTE system. The signaling compression method has been implemented...
This paper is concerned with the fault detection (FD) problem for a class of networked systems. We introduce a novel communication protocol which is called the Round-Robin protocol (RRP) to overcome the limited communication capacity. Under the RRP protocol, sensor nodes are prearranged in a particular sequence, and communication between sensor and the receiving end is thus periodic. Such kind of...
This study addresses the problem of distributed consensus for discrete-time networked multi-agent systems (NMASs) with communication delays in the transmission network. Different from existing techniques, the networked predictive control scheme is introduced to compensate for communication delays actively and overcome the difficulties induced by the delays. A distributed consensus protocol based on...
Due to the increasing dependency of critical infrastructure on synchronized clocks, network time synchronization protocols have become an attractive target for attackers. We identify data origin authentication as the key security objective and therefore conduct a comprehensive, theoretical evaluation of data origin authentication schemes from different application fields with regard to their applicability...
Wireless networked control systems have gained significant popularity due to commissioning and maintenance ease. IEEE 802.15.4 standard is one of wireless communication protocol for low delay deterministic network. Factory automation, not only needs low delay but also requires the network that should has the capacity of various delay devices. In this paper, we propose a scheme, satisfying the muli-delay...
The output consensus problem for discrete-time linear multi-agent systems is considered in this paper, where the dynamic structures of the agents are heterogeneous. While all states of the agents are not measurable and outputs are available, the protocol with dynamic output feedback is designed to get all agents' outputs to achieve consistency. The theoretical result is illustrated by a numerical...
This paper explains how Fusion networking technology can be used as a communication mechanism between utility substations for transporting time critical traffic in wide area power system protection applications to attain deterministic low delay, zero packet loss and ultra-low packet delay variation. The requirements for inter substation communications are presented with focus on the IEC 61850 protocols...
The possibility of extending real-time Ethernet networks employed in industrial applications with wireless links can lead to several benefits in terms of cost reduction and easier deployment. However, delays and jitter introduced by both the wireless medium and the interconnection systems may degrade the network performance significantly. This paper describes the advantages introduced by the IEEE...
In view of the problems in the maintenance and deployment of wired sensor networks in industrial environment, this paper propose the application of wireless sensor networks to industrial control network. In consideration of the interference of the wireless sensor network and the obstruction of the barrier, a wireless sensor network model for multi hop wireless sensor is established based on S-MAC...
Previous studies have shown the WiFi, as the dominant last hop access to Internet, has become the weakest link in the round-trip network delay. Therefore it is critical to understand and minimize the WiFi interference in order to reduce the WiFi hop delay. For the first time in the literature, this paper defines an intuitive and accurate metric to quantify the impact of interference on each actual...
Guaranteed cost consensus problem for a group of second-order dynamic agents is investigated in the current paper, where a consensus protocol with time-varying delays is considered. Firstly, the guaranteed cost control is used to deal with the consensus problem for second-order multi-agent systems with time-varying delays, where the consensus regulation performance and the energy consumption are considered...
This paper mainly investigates an integrated control system operating under the software defined network (SDN) protocoI. SDN is a new networking paradigm in which network inteIIigence is centraIIy administered and network controI data and decisions are communicated via channeIs that are physicaIIy separated from those conveying user data. Hence, under the SDN architecture, it is relatively easy to...
CoAP is a web transfer protocol that provides basic RESTful services for IoT devices. Since CoAP operates on top of UDP, CoAP must support additional congestion control and reliability mechanisms. However, CoAP is originally designed to allow implementations that do not maintain any end-to-end connection information. Thus, the default congestion control mechanisms are not capable of adapting to network...
This paper studies the consensus problem for discrete-time multi-agent systems with state, input and different communication delays, where the input delays can be arbitrarily large yet exactly known. Moreover, the communication delays are different for different agents and can also be arbitrarily large. A nested predictor based protocol is established to solve the problem. It is shown that both the...
This paper studies the problem of determining sensor locations in a large sensor network using only relative distance (range) measurement. In this paper, we consider a synchronous communication protocol when 1) the communication delay between sensors is uncertain; 2) successive packet loss is finite. Based on the barycentric coordinate representation, our work generalizes the DILOC algorithm in the...
We consider the problem of reliable and minimal delay transmission in a wireless sensor network that uses time division in order to schedule its node-to-node communication in time-bounded manner. We propose an algorithm that uses the message acknowledgment method and solves this problem. We show bounds for its expected value of message delivery time. Moreover, our algorithm is based on simple state...
In this paper, we present an efficient synchronous transmission access protocol suitable for WDM networks of passive star topology. A single control channel is assumed in order to properly coordinate the data packets communication. According to the proposed WDMA scheme, a data channel is assigned at each station that attempts data packet transmission, avoiding the collisions over the data multi-channel...
Efficient and reliable data dissemination is crucial to most of the vehicular network applications. However, the inherent vehicular network characteristics make data dissemination a challenging task. Typically, the existing algorithms generate too many redundant packets that saturate the network, thus causing frequent channel contention and packet collisions. To tackle these problems we propose an...
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