Spatial Division Multiplexing Spectrum Flexible Optical Network Resource Allocation Method with Minimal Crosstalk
A resource allocation, optical network technology, applied in the field of spatial division multiplexing spectrum flexible optical network resource allocation, can solve problems affecting transmission performance and service quality, etc.
Active Publication Date: 2019-08-20
ZHONGTIAN BROADBAND TECH
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Problems solved by technology
Since the selection of fiber cores is increased when establishing service requests in the space-division multiplexing spectrum flexible optical network, there is crosstalk between adjacent fiber cores. If their crosstalk is not handled properly, the space-division multiplexing spectrum will be affected. Transmission Performance and Quality of Service when Establishing Service Requests in Flexible Optical Networks
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[0047] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are explanations of the present invention and the present invention is not limited to the following examples.
[0048] Such as figure 1 As shown, a kind of space division multiplexing spectrum flexible optical network resource allocation method of minimum crosstalk of the present invention comprises the following steps:
[0049] Step 1: The space division multiplexing spectrum flexible optical network is initialized. In space division multiplexing spectrum flexible optical network U(V,E,C,FS), V={V 0 ,V 1 ,V 2 ,...,V |V|-1} represents the set of all nodes in the network, E={E 0 ,E 1 ,E 2 ,...,E |E|-1} represents the set of all optical fiber links in the network, where all optical fiber links are bidirectional links, where E M,L ∈E represents the adjacent node V M and V L between fiber optic links, V M ,V L ∈ V; C...
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The invention discloses a method for resource allocation of a space division multiplexing spectral flexible optical network with minimum crosstalk. The method comprises the following steps of initializing the space division multiplexing spectral flexible optical network, generating a group of service request sets, computing a shortest working path of each service request, finding available candidate spectrum blocks in different fiber cores, computing crosstalk values of the candidate spectrum blocks on an optical fiber link, selecting the spectrum block with the minimum crosstalk value to serve as a spectrum resource reserved for the service request, and guaranteeing minimization of the crosstalk value of the spectrum resource allocated to the service request. According to the method, a problem of cross crosstalk in the space division multiplexing spectral flexible optical network is solved, so that the service quality of the space division multiplexing spectral flexible optical network is guaranteed, and the transmission performance of the service request in the optical network is improved.
Description
technical field [0001] The invention relates to an optical network resource allocation method, in particular to a space division multiplexing spectrum flexible optical network resource allocation method with minimum crosstalk. Background technique [0002] With the rapid development of cloud computing, video-on-demand and other emerging network services, network traffic is increasing at an exponential rate, and will soon reach the maximum transmission capacity of a single-core optical fiber. This makes the single-core optical fiber used in traditional optical networks unable to meet user services. The bandwidth requirements of the request. Due to the fixed grid technology used in the traditional optical network, the bandwidth of the optical network cannot be allocated flexibly, resulting in a waste of spectrum resources. On the contrary, the flexible grid technology is used in the spectrum flexible optical network to realize the flexible allocation of spectrum resources, th...
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IPC IPC(8): H04Q11/00
Inventor 陈伯文雷雨沈纲祥符小东张伟李莉华汤俊勇
Owner ZHONGTIAN BROADBAND TECH