Fair resource allocation in OFDMA networks is studied in this paper. We propose a distributed algorithm requiring minimum inter-cell information that embodies the principle of balancing advantaged and disadvantaged us...
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Fair resource allocation in OFDMA networks is studied in this paper. We propose a distributed algorithm requiring minimum inter-cell information that embodies the principle of balancing advantaged and disadvantaged user traffic flows. A simple interference deterministic channel model assuming zero queuing delay is used. We propose a hybrid power and bandwidth allocation algorithm. A two-dimensional simulation conducted on both uniform and random-sized-cells shows the benefits are significant when fair allocations are desired.
In Vehicular Ad hoc Network (VANET), Carrier Sense Multiple Access (CSMA) mechanism adopted in IEEE 802.11p/WAVE has some drawbacks in latency and delivery ratio when disseminating safety messages periodically. In thi...
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ISBN:
(纸本)9781479959716
In Vehicular Ad hoc Network (VANET), Carrier Sense Multiple Access (CSMA) mechanism adopted in IEEE 802.11p/WAVE has some drawbacks in latency and delivery ratio when disseminating safety messages periodically. In this paper, a novel context-aware MAC protocol in VANET based on Bayesian Networks (BN) is proposed to improve network performance of high load. BN is introduced to process incomplete, inaccurate and uncertain context information in view of the high dynamic of VANET and vagueness of acquiring context information system. The Contention Window (CW) is adaptively adjusted based on the network communication status inferred from BN. Simulation results demonstrate that compared to IEEE 802.11p/WAVE algorithm, the novel algorithm offers a better delivery ratio and medium access delay.
In this paper, an intelligent static traffic grooming scheme based on predatory search algorithm(PSA) and gaming is proposed in IP over WDM(Wavelength Division Multiplexing) optical Internet. Based on the layered grap...
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In this paper, an intelligent static traffic grooming scheme based on predatory search algorithm(PSA) and gaming is proposed in IP over WDM(Wavelength Division Multiplexing) optical Internet. Based on the layered graph, the proposed scheme tries to maximize the comprehensive user traffic request delay satisfaction degree and minimize the network relative cost, and then the optimal traffic grooming scheme is found through the transition between the local and the global search realized by adjusting the restriction level of search area. It is simulated over actual network topologies. Simulation results show that it is both feasible and effective with better performance than certain existing traffic grooming scheme.
The Nongtun ore deposit,located in the northwest of the Ag-Pb-Zn polymetallic district in Xidamingshan,Guangxi,is a large-scale Pb-Zn *** is a newly discovered deposit in the southwest edge of the Qin-Hang metallogeni...
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The Nongtun ore deposit,located in the northwest of the Ag-Pb-Zn polymetallic district in Xidamingshan,Guangxi,is a large-scale Pb-Zn *** is a newly discovered deposit in the southwest edge of the Qin-Hang metallogenic belt,for which some aspects of its genesis are still poorly understood,such as the origin and
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