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Optical network modulation format and spectrum resource asymmetric allocation method and device

A modulation format and spectrum resource technology, applied in the field of optical network modulation format and asymmetric distribution of spectrum resources, can solve the problem of reducing transmitter power loss and achieve the effect of reducing power loss and efficient utilization

Inactive Publication Date: 2018-11-13
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, due to the reduction in the number of occupied spectrum, the power loss of the transmitter will also be reduced

Method used

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  • Optical network modulation format and spectrum resource asymmetric allocation method and device
  • Optical network modulation format and spectrum resource asymmetric allocation method and device
  • Optical network modulation format and spectrum resource asymmetric allocation method and device

Examples

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Embodiment 1

[0039]Give an example to illustrate the asymmetric allocation method of optical network spectrum resources based on business time, considering the ideal situation, ignoring the protection bandwidth between each business

[0040] Step 1. Assume that there are 6 modulation formats BPSK, QPSK, 8QAM, 16QAM, 32QAM, and 64QAM in the network, corresponding to modulation levels 1 to 6 respectively. The transmission rates, power consumption, and transmission distances corresponding to the 6 modulation formats are shown in Table 1. Show.

[0041] Table 1

[0042]

[0043] Step 2. Assume that a new service requires a forward bandwidth of 87.5Gb / s and a reverse bandwidth of 75 Gb / s. The number of spectrum subcarriers per link in the network is 10.

[0044] Step 3. According to the optical network modulation format and the asymmetric allocation method of spectrum resources, use the source node, destination node and network resource module of the new service to route the service to obt...

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Abstract

The invention discloses an optical network modulation format and spectrum resource asymmetric allocation method and device. On the premise that current existing total spectrum resources are kept unchanged, modulation formats with relatively low power consumption are selected for business according bandwidths required by the new business; and asymmetric spectrum allocation is carried out on the business through utilization of business forward and reverse bandwidth requirement difference. Efficient utilization of optical network spectrum resources is realized, and power consumed for bearing thebusiness is reduced.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to an optical network modulation format and a method and device for asymmetrically allocating spectrum resources. Background technique [0002] With the rise of big data, cloud computing, and high-definition video services, the bandwidth required by services in the network is increasing, and the asymmetry of forward and reverse bandwidth requirements is becoming more and more obvious. In traditional networks, the highest order modulation format is usually selected to meet the rapid bandwidth growth requirements, but the higher order modulation format consumes more power and the transmission distance is shorter. Moreover, a transmitter with a fixed modulation format and a fixed bandwidth cannot adapt to the characteristics of today's services that change dynamically over time. On the other hand, spectrum allocation for services in traditional networks adopts forward an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00H04L27/00
CPCH04L27/0008H04Q11/0005H04Q11/0062H04Q2011/0073H04Q2011/0086
Inventor 李慧纪越峰刘宇泽吕春建
Owner BEIJING UNIV OF TECH