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In this paper we propose a novel self-organizing resource allocation scheme with minimal feedback information based on minority game (MG). Designing wireless protocols with minimal feedback is especially important, because the price for information exchange in wireless networks is high and reduces the overall capacity of the system. This is especially true for networks that may rely strongly on self-organizing...
In this paper, the author firstly analyzes the limitations of the existing short-range networks, and then proposes a new wireless network protocol and puts forward my own view on system architecture, network topology, wireless channel competition algorithm and multi-path selection algorithm, finally presents hardware and software design block diagram of wireless node. The application performances...
Time synchronization is critical in distributed wireless networks to achieve and maintain coordination among distributed network nodes. In this paper, we propose a routing based time synchronization protocol (RBTSP) for multi-hop wireless networks. Different from many existing time synchronization protocols, our objective aims at minimizing the number of timing packet exchange and reducing the non-deterministic...
In this paper we present a novel technology named dynamic relay handover (DRH) for leveraging DSR and AODV for the benefit of providing a guaranteed network performance. The key points of DRH are the connectivity checking of the existing relay node and the assignment of a new relay node. In simulation of this algorithm based on OPNET Modeler 10.5, the effect of DRH on the network performance and the...
The expansion of wireless network has been a very attractive area of research. Many researches focus on the performance of TCP over wireless environment. This paper presents the simulation analysis of rate-based pacing TCP with the delayed acknowledgement enable and disable strategies in the wireless multi-hop network. We find out how good the delayed acknowledgement (ACK) strategy affects rate-based...
We propose a novel approach to distributed multi-radio channel allocation that is based on learning and a protocol following this approach (termed LCAP). Each node in LCAP independently and iteratively learns the channel allocation using a probabilistic adaptation algorithm that ensures network connectivity while reducing interference. Key enabler of the proposed approach is a novel neighbor discovery...
IEEE 802.15.4 is a protocol for low-rate wireless personal area networks. It contains two topologies: the star topology and the peer-to-peer topology. It has good performances for the star topology. However, the beacon collisions with other beacons, data or control frames make the multi-hop beacon-enabled mode difficult to be built and maintained. Although nonbeacon-enabled has better performance,...
IEEE P1900.4 is an emerging standard for optimized radio resource utilization where cognitive radio technologies are used for efficient spectrum utilization. In this paper, we design and implement a cognitive wireless network system based on open documents of IEEE P1900.4, and evaluate its performance using UDP streaming and HTTP download. Our experiments show interesting results that total network...
Three applications in wireless networks where model-free stochastic learning is applicable, are discussed. The learning based optimization problems are formulated and simulation results are presented. Some open issues are also discussed.
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