Time synchronization provides uniform timescale for distributed sensor networks. In this paper a genetic based time synchronization optimize algorithm is proposed. It first generated the nondeterministic transmitting delay and then adopted the genetic algorithm to simulating these delays. Minimal linear...

Aiming at the problems of ZigBee tree routing algorithm that the algorithm has many hop counts, long latency of data transmission and low ratio of the packets delivery, a tree routing improvement algorithm based on the neighbor table in ZigBee networks is proposed. The proposed algorithm establishes...

In order to restrain the congestion phenomenon in Internet, a congestion control algorithm with state preestimate is proposed based on discrete global sliding mode control theory. Taking into account the uncertain and time-delay factors in actual Internet, a discrete global sliding surface with state...

Identifying and immunizing nodes in networks with heterogeneity community is very important to prevent epidemic spreading. The effectiveness of preventing the transmission of infectious disease can be greatly enhanced by choosing suitable nodes to vaccinate. Community structure can amplify the influence...

Self-organization and limited energy are two features of wireless sensor network. This paper proposes a practice topology control algorithm for wireless sensor network based on adding backup node and hidden link in traditional topology tree. Because of the HRP(Hierarchical Routing Protocol), build links...

The influence of cooperative transmission based on cross-layer routing design to the wireless vehicular Ad-hoc networks is studied. Firstly, the cross-layer cooperative transmission model is built, and then according to different quality of service requirements, The objective functions expressions of...

micro-blog articles should be protected by Chinese Copyright Law so long as they are original works. The infringement of copyright may be means of copying, digitizing, retweeting works, and setting the hyperlinks in micro-blog. Bloggers need to bear legal liability for their infringement of copyright...

With the developing of logistics industry,the warehouse requirements of management become higher and higher,but traditional warehouse management has many problems,such as identifying product difficultly,getting the real-time information of product hardly,low degree of automation and so on,traditional...

To meet the project’ requirements of IoT application systems, we designed a UHF reader that based on the STM32F103ZET6 and RMU900+. The reader can work in three modes which are local control mode, stand-alone network control mode and centralized network control mode. While working in the network mode,...

The paper select the 20 hotest network events in 2013 as the research sample from the opinion monitoring room of People.It made the cluster analysis from the angle of these incidents to explore the characteristics,connotations and demands of the events. Research shows that the overall 2013 network group...

It has been proved being cumbersome and ineffective to prevent attacks in computer networks. However, the detection strategies have been found to be effective and less costly. The use of Intrusion Detection Systems (IDS) as a detection technique has been widely implemented in computer networks. Meanwhile,...

In traffic accident investigation, measurement and location of accident factors using traditional methods is a time-consuming work. Investigators must work on each measurement point to collect data, and then mark the position of the measured point in the scene graph. Due to the low efficiency of manual...

CoAP (Constrained Application Protocol) is a lightweight protocol proposed and standardized by IETF (Internet Engineering Task Force). It is designed for constrained environments, such as sensor nodes and sensor networks. In this paper, we present an improved CoAP scheme based on 6LoWPAN (IPv6 over Low...

XMPP (Extensible Messaging and Presence Protocol) is a widely used protocol for real-time information exchange in the Internet. In this paper, we extend it to the area of WSN (wireless sensor networks) based on IPv6 and present a lightweight XMPP client protocol software optimized for sensor nodes. Considering...

The type of business relationships between the Internet autonomous systems (AS) determines the BGP interdomain routing. Previous works on inferring AS relationships relied on the connectivity information between ASes. In this paper we thoroughly investigate the route policy between ASes, then present...

The authors has established the supernetwork model of enterprise marketing in order to study equilibrium on the network of enterprise marketing , and has analysised of manufacturers , intermediate traders and consumers behavior and optimal target. Then the optimal goal has changed into the corresponding...

To solve the security issues of network features and data sharing features in cloud storage service, this paper proposes a data security access scheme in cloud storage Based on Attribute-Group. In terms of access rights control and access control architecture for the access control mechanism research,...