Spectrum resource allocation method and device based on flexible grid tags

A spectrum resource allocation and flexible grid technology, applied in the direction of digital transmission system, error prevention, electrical components, etc., can solve the problem that the channel range is not easy to determine

Active Publication Date: 2018-11-09
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the related art, there is no effective solution to the technical problems such as the difficult determination of the channel range caused by the continuous problem of the subcarriers of the flexible grid channel. The present invention provides a spectrum resource allocation method and device based on the flexible grid label. Solve at least the above problems

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  • Spectrum resource allocation method and device based on flexible grid tags
  • Spectrum resource allocation method and device based on flexible grid tags
  • Spectrum resource allocation method and device based on flexible grid tags

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Embodiment 1

[0029] figure 1 It is a flow chart of a method for allocating spectrum resources based on flexible grid tags according to Embodiment 1 of the present invention. Such as figure 1 As shown, the method includes:

[0030] Step S102, obtaining the identification of the wavelength channel used to send the flexible grid label information;

[0031] Step S104, classify each subcarrier used to carry the flexible grid label information according to the identifier;

[0032] In this embodiment, the above identifier is used to indicate the identifier of the channel where each subcarrier is located, for example, the channel number and the like.

[0033] Step S106, in the wavelength channel corresponding to the above-mentioned identification, determine the frequency range of the above-mentioned wavelength channel according to the classified subcarrier information;

[0034] Step S108, allocate spectrum resources to other wavelength channels except the above wavelength channel according to ...

Embodiment 2

[0055] This embodiment is described from two processes of sending and receiving flexible grid label information. The main purpose of this embodiment is to provide a flexible grid wavelength label definition scheme, which can effectively support the realization of Flex Roadm in the wavelength division multiplexing system, support the carrying of flexible grid subcarrier information, and support the channel information Portable, solves the problem of discontinuous subcarriers of flexible grid channels, supports wavelength path monitoring and automatic discovery, and can also detect wavelength label reception errors in time.

[0056] sending side

[0057] Such as image 3 As shown, the data frame structure consists of a frame header and a frame body. The frame header has a fixed length, and the frame body has a variable length. The frame body length is related to the actual number of subcarriers. In the case of discontinuous subcarriers, the channel center frequency and channel...

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Abstract

Provided are a spectrum resource allocation method and device based on a flexible grid label. The method comprises: acquiring an identifier of a wavelength channel which is used for sending flexible grid label information; classifying, according to the identifier, each subcarrier which is used for bearing the flexible grid label information; in the wavelength channel corresponding to the identifier, determining a frequency range of the wavelength channel according to information about the each subcarriers classified; and allocating spectrum resources for one or more other wavelength channels except for the wavelength channel according to the frequency range, wherein the above-mentioned wavelength channel and the one ore more other wavelength channels are jointly used for sending the flexible grid label information. By adopting the technical solution provided in the present disclosure, the technical problems which have not been effectively solved in the related art are solved, such as the problem that it is hard to determine the channel range caused by the continuity of flexible grid channel subcarrier, thereby implementing the sending of information about a flexible grid label.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for allocating frequency spectrum resources based on flexible grid tags. Background technique [0002] Reconfigurable Optical Add Drop Multiplexer (ROADM for short) can realize local add-drop and direct pass-through of channel wavelengths through software configuration, which enhances the flexibility of optical network service transmission. Existing ROADM systems are wavelength-independent, direction-independent, and wavelength-competition-independent (Colorless, Directionless, Contentionless, CDC for short). The traditional wavelength division multiplexing system adopts fixed grid technology, and the channel grid is 50GHz or 100GHz. The transmission technology beyond 100G has given rise to the demand for flexible grid (gridless or flexible grid) to meet the WDM transmission requirements of different modulation patterns and different rates. The flexible gri...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H04L5/00H04L1/00
CPCH04J14/0224H04J14/0257H04J14/0258H04J14/026
Inventor柯志勇华锋
OwnerZTE CORP