A distribution communication network cross-domain protection network oriented to quantum protection communication service

Abstract

The invention discloses a distribution communication network cross-domain protection network oriented to quantum protection communication service. A centralized control architecture of ubiquitous optical access network for cross-domain protection is proposed by introducing software-defined networking technology in the distribution communication network which is composed of optical access network carrying quantum secret key distribution. The cross-domain protection function module is further designed and the corresponding protocol is extended. Then, based on this architecture, a global evaluation strategy is designed, which integrates the ubiquitous access resources and optical convergence layer resources to make decisions for the resource allocation of protection links. Finally, the interactive flow of cross-domain protection is designed. Compared with the traditional access network, it can achieve a more robust network form and provide effective service protection and network performance.

Description

technical field [0001] The invention relates to the technical field of survivability of power distribution communication networks, in particular to a cross-domain protection networking method for power distribution communication networks oriented to quantum protection communication services. Background technique [0002] The application mode of quantum key in power distribution business, such as figure 1 , where the hollow arrow path is the quantum key distribution channel, the endless curved path is the business communication channel, and the hollow circle dotted line path at both ends is the quantum key negotiation generation channel. [0003] On the main station side of the city, according to the different transmission channel quantum encryption schemes or terminal business quantum encryption schemes adopted, the location where the quantum key is stored on the main station side is a secure access gateway or an encryption authentication device; on the power distribution te...

AI Technical Summary

Problems solved by technology

At the access layer, the original design intention of various ubiquitous access networks only considers the access problem of users, and lacks consideration or insufficient consideration for network survivability, and its network architecture is very simple. For example, the general structure of passive optical network is only For a simple tree network, users are only connected by a single fiber link

However, in today's network scenarios where the network scale of the power distribution communication network is gradually expanding and the demand for business survivability is increasing, the traditional ubiquitous access network architectures cannot provide the necessary survivability guarantee for the business due to their robustness constraints. , high survivability power distribution communication network architecture has become an inevitable trend in the development of access networks

However, dismantling the existing ubiquitous access network and deploying a new ubiquitous access network with a high survivability architecture will consume a lot of capital and time costs. How to realize the current The smooth evolution of the distributed communication network to the highly survivable distribution communication network architecture is the key to improving the survivability of the distribution communication network

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