Passive optical network (PON) optimization method
A passive optical network and optimization method technology, applied in the field of optical splitter (Splitter) position optimization, can solve the problems of affecting the cost of optical fiber links, the labor cost of laying optical fibers, and the optimization of the position of the splitter is not considered.
Inactive Publication Date: 2015-01-28
HANGZHOU DIANZI UNIV
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Problems solved by technology
[0005] In the literature [2], the author studies how to meet the growing business needs of each ONU, but it does not consider the optimization of the Splitter location, the location of the Splitter will affect the sum of the distance between the OLT and each ONU, therefore, Will affect the cost of fiber links and the labor cost of laying fiber
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[0049] The embodiments of the present invention will be further described below in conjunction with the attached table.
[0050] In this embodiment, it is assumed that there is 1 OLT and 20 ONUs in the PON, and the maximum number of wavelength channels provided in the PON is 5, the wave speed of the wavelength channels is 10Gbps and 40Gbps, and the traffic volume increases by 50% after each period , that is, α=0.5. There are 15 buildings in the PON, that is, ONU 1-ONU 15, and 5 home users, that is, ONU15-ONU20; in period 1, the initial bandwidth is ONU1-ONU15: 600Mbps, ONU15-ONU20: 100Mbps, the wavelength channel used The number is 1, and the wavelength used is λ 1 .
[0051] In order to reduce the cost of optical fiber links and the labor cost of laying optical fibers, the optimal position of Splitter is obtained by model optimization simulation: x s =3.535981 y s =22.98797.
[0052]The optimal distribution of wavelength and wave velocity is obtained by model optimizatio...
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The invention discloses a passive optical network (PON) optimization method which includes following steps that a PON is known to comprise an optical line terminal (OLT), a splitter and N optical network units (ONUs), position coordinates of the OLT are known to be x<0> and y<0>, and a position coordinate of each ONU is known to be x and y; besides, the PON has K units of wavelength which can be used, and the wave velocity is Rk; the required bandwidth requires that alpha is added to each time period; an objective function is established, the first part in the objective function (1) represents costs of all the ONUs, the second part represents costs of the OLT, and the third part represents costs for the splitter to connect the OLT and optical fiber links of all the ONUs and labor costs for laying optical fibers; and optimum distribution of the wavelength and the wave velocity and the optimal position of the splitter are obtained. According to the PON optimization method, an integer linear programming model with lowest PON costs is established to obtain the optimum distribution of the wavelength and the wave velocity and the optimal position of the splitter, and requirements for continuously increased business volumes are met.
Description
technical field [0001] The invention belongs to the technical field of optical fiber communication, and specifically relates to a method for allocating the wavelength and wave speed of a passive optical network and optimizing the position of an optical splitter (Splitter). Background technique [0002] With the advent of the all-optical network era, along with the rapid economic development and the continuous improvement of informatization, people's demand for high-bandwidth services such as video-on-demand, video conferencing, high-definition television, online learning, and interactive games is growing explosively. Optimizing passive optical network technology has become a hot topic of discussion and research at home and abroad. At the same time, in modern society, artificial labor has become more and more expensive. Therefore, considering factors such as cost, it is becoming more and more important to optimize the Passive Optical Network (PON) in various aspects. The PO...
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IPC IPC(8): H04Q11/00
Inventor 祁永敏胡小琴
Owner HANGZHOU DIANZI UNIV