Flexible grid label-based spectrum resource allocation method and device

A spectrum resource allocation and flexible grid technology, applied in wavelength division multiplexing systems, transmission systems, transmission monitoring/testing/fault measurement systems, etc., can solve problems such as difficult to determine the channel range

Active Publication Date: 2014-10-15
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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  • Flexible grid label-based spectrum resource allocation method and device
  • Flexible grid label-based spectrum resource allocation method and device
  • Flexible grid label-based spectrum resource allocation method and device

Examples

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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

The invention provides a flexible grid label-based spectrum resource allocation method and a device. the device comprises steps of acquiring a sign of a wavelength channel used for sending the flexible grid label information, carrying out classification on each sub carrier used for bearing the flexible grid label information according to the sign, determining the frequency range of the wavelength channel according to the sub carrier information after classification in the corresponding wavelength channel of the sign, and allocating spectrum resources for other wavelength channels expect for the wavelength channel according to the frequency range, wherein the wavelength channel and other wavelength channels are together used for sending the flexible grid label information. By adopting the technical scheme provided by the invention, the technical problem that the channel range is not easy to determine due to the continuous problem of the flexible grid channel sub carrier can be effectively solved, and flexible grid label information sending can be realized.

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 & AuthorityApplications(China)
IPC IPC(8): H04L5/00H04L1/00
CPCH04B10/07H04J14/0224H04J14/0227H04J14/02H04L5/00H04J14/0257H04J14/0258H04J14/026
Inventor柯志勇华锋
OwnerZTE CORP