车辆的高速移动,导致频繁地进行呼叫切换,这就使得信道分配成为车联网VANETs(Vehicular Ad Hoc Network)中最受关注的研究热点。为此,提出一种新的信道分配算法,标记为SBC算法。该算法引用信道再使用技术(Channel Reuse Technique)、信...车辆的高速移动,导致频繁地进行呼叫切换,这就使得信道分配成为车联网VANETs(Vehicular Ad Hoc Network)中最受关注的研究热点。为此,提出一种新的信道分配算法,标记为SBC算法。该算法引用信道再使用技术(Channel Reuse Technique)、信道借用(Channel Borrowing),并依据车辆行驶的速度计算发生切换的时间,从而提高服务质量Qo S(Quality of Service)。仿真结果表明,提出的SBC算法在呼叫阻塞概率、丢失率和切换时延方面表现良好的性能。展开更多
We experimentally demonstrate a channel-reuse bidirectional 10 Gb∕s∕λ long-reach dense wavelength-division multiplexing passive optical network（DWDM-PON） and an optical beat-noise-based automatic wavelength contr...We experimentally demonstrate a channel-reuse bidirectional 10 Gb∕s∕λ long-reach dense wavelength-division multiplexing passive optical network（DWDM-PON） and an optical beat-noise-based automatic wavelength control method for a tunable laser used in a colorless optical network unit（where λ · wavelength）. A55 km, bidirectional, 400 Gb/s（40 × 10 Gb∕s） capacity channel-reuse transmission with 100 GHz channel spacing is achieved. The transmission performance is also measured with different optical signal to Rayleigh backscattering noise ratios and different central wavelength shifts between upstream and downstream in the channel-reuse system.展开更多
文摘车辆的高速移动,导致频繁地进行呼叫切换,这就使得信道分配成为车联网VANETs(Vehicular Ad Hoc Network)中最受关注的研究热点。为此,提出一种新的信道分配算法,标记为SBC算法。该算法引用信道再使用技术(Channel Reuse Technique)、信道借用(Channel Borrowing),并依据车辆行驶的速度计算发生切换的时间,从而提高服务质量Qo S(Quality of Service)。仿真结果表明,提出的SBC算法在呼叫阻塞概率、丢失率和切换时延方面表现良好的性能。
基金supported by National Natural Science Foundation of China(No.61302079)the National "863" Program of China(No.2011AA01A104)the Fund of State Key Laboratory of Information Photonics and Optical Communications(Beijing University of Posts and Telecommunications),China
文摘We experimentally demonstrate a channel-reuse bidirectional 10 Gb∕s∕λ long-reach dense wavelength-division multiplexing passive optical network（DWDM-PON） and an optical beat-noise-based automatic wavelength control method for a tunable laser used in a colorless optical network unit（where λ · wavelength）. A55 km, bidirectional, 400 Gb/s（40 × 10 Gb∕s） capacity channel-reuse transmission with 100 GHz channel spacing is achieved. The transmission performance is also measured with different optical signal to Rayleigh backscattering noise ratios and different central wavelength shifts between upstream and downstream in the channel-reuse system.
