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The applying of QPSO-FISH algorithm in the wireless senor network are mainly studied in this paper. Wireless sensor network is an energy-constrain network, coverage efficiency and power consumption are two important performance indicators. Maximizing the network coverage and minimizing the number of working nodes are network optimization goals. Establish an optimal model for coverage in wireless sensor...
Vehicular ad-hoc networks (VANETs) is a promising approach to the dissemination of spatio-temporal information such as the current traffic condition of a road segment or the availability of a parking space. Due to the constraint of the communication bandwidth, only a limited number of information items may be transmitted upon a vehicle-to-vehicle communication opportunity. Ranking becomes critical...
In this paper, C3G-A (Combining the third generation mobile communication network and Ad hoc network) system is presented. Call Admission Control (CAC) plays an important role in radio resource management of wireless communication networks. It permits or denies the call arrival connection requests based on the certain criteria. To analyze the performance of CAC in C3G-A system, Markov chain model...
Integration of cellular network and ad hoc network can increase the throughput significantly in a congested environment. This paper presents an experimental system of integrating ad hoc network and cellular network In this system, an embedded hardware platform is built. The platform is based upon S3C2410 and used as communication terminal. We also transplant embedded Linux kernel and Bluetooth protocol...
Convergence is the main developing trend of heterogeneous networks in the future. The convergence of 3G cellular network and MANET can provide data communication service with or without an existing infrastructure only with 3G terminals. Synchronization is a critical part for any distributed system. We propose a new synchronization protocol called GTP(GPS-aided Time-syn Protocol) on the convergence...
In this paper we propose an algorithm for disseminating reports about real-time traffic conditions in vehicular ad-hoc networks. Using this method, each vehicle makes local decision on when to disseminate reports, how many to disseminate, and which reports to disseminate. In order to deal with the bandwidth and memory constraints, reports are prioritized in terms of their value, as reflected by supply...
We propose a medium access control (MAC) protocol for networks that integrated TD-SCDMA and Ad hoc networks. The protocol is collision-free and TD-SCDMAand operates under dynamic and distributed circumstances; it can improve channel utilization rate and increase the number of nodes simultaneously accessible to channel by combining control channel and transmission channel in one slot, and each channel...
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