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The alternating channel access scheme, as defined in the 802.11p/WAVE (Wireless Access in Vehicular Environments) standard, divides the entire channel access time into consecutive transmission intervals, called Sync Intervals. Each Sync Interval consists of two alternating intervals: control channel interval (CCHI) and service channel interval (SCHI), for delivering safety and non-safety applications,...
In this paper, the cloud services optimization problem considering energy consumption cost is discussed. The queue model is presented for customer request service on data center. Since the server energy utility is based on the CPU core frequency, the novel trade-off optimization model between services revenue and energy loss cost is proposed in the paper, including allocating the dynamic CPU frequency...
This paper presents a bandwidth-negotiation scheduling (BNS) for 802.16j MMR networks. The proposed BNS not only can allocate adequate bandwidth for UGS, rtPS, nrtPS, and BE in sequence of priority levels, but also can invoke negotiation between access and relay zones when the remaining bandwidth is insufficient to meet the minimum bandwidth requirement of rtPS or nrtPS. Besides, our BNS scheme can...
Under various experimental conditions, the paper, taking Al2O3 as modified materials, conducts a study on the catalysis performance of magnetic photochemical catalyzing materials as well as a preliminary analysis on its reaction kinetics. The result indicates four conclusions as following. Firstly, the original concentration of the degraded solution imposes significant influence on photochemical catalysis...
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