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A quantum communication-based backbone network system and its relay method

A technology of quantum communication and backbone network, which is applied to the backbone network system and its relay field based on quantum communication, and can solve the problems of unbalanced keys of access nodes, inability to continuously relay real-time performance, and too long relay paths.

Active Publication Date: 2021-02-19
QUANTUMCTEK +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to solve the above problems, the present invention overcomes the problems of too long relay path, unbalanced keys between access nodes, circular routing, inability to continue relay and real-time problems in the construction of the backbone network system in the traditional relay method, and provides A quantum communication-based backbone network system and its relay method

Method used

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  • A quantum communication-based backbone network system and its relay method
  • A quantum communication-based backbone network system and its relay method
  • A quantum communication-based backbone network system and its relay method

Examples

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Embodiment 1

[0084] In this embodiment, a backbone network system based on quantum communication, such as figure 1 As shown, it includes: access node A, relay node B, access node C and server; the access node A and the relay node B are adjacent nodes, and the relay node B and the The access node C is an adjacent node; the access node A, the relay node B and the access node C are all connected to the server.

[0085] Access node A, the access node A is configured as a device or virtual device that connects the metropolitan area network 1 to the quantum communication backbone network; the access node A includes a key management machine A and a QKD device A, the Key management machine A is connected to QKD device A;

[0086] Access node C, the access node C is configured as a device or virtual device that connects the metropolitan area network 2 to the quantum communication backbone network; the access node C includes a key management machine C and a QKD device C, the The key management mac...

Embodiment 2

[0091] In this embodiment, a backbone network system based on quantum communication, such as figure 2 As shown, the key management machine A with integrated QKD function can be used in access node A, the key management machine B with integrated QKD function can be used in relay node B, and the key with integrated QKD function can be used in access node C The management machine C, the adjacent key management machine A and the key management machine B, and the adjacent key management machine B and the key management machine C are connected through the classical communication channel and the quantum channel.

[0092] Embodiment 2 The other technical features of a backbone network system based on quantum communication are the same as those in Embodiment 1.

Embodiment 3

[0094] The backbone network constructed in this embodiment includes three MANs. The three MANs are respectively connected to the backbone network through access nodes, and adjacent access nodes are relayed through a relay node. The relay nodes are all connected to a server, such as image 3 As shown, the backbone network includes access node A, relay node B, access node C, relay node D, and access node E. MAN 1 accesses the backbone network through access node A, and MAN 2 The access node C is connected to the backbone network, and the metropolitan area network 3 is connected to the backbone network through the access node E. Access node A, relay node B, access node C, relay node D, and access node E are all connected to A server-side connection.

[0095] The server is responsible for the network access management of access node A, relay node B, access node C, relay node D, and access node E. D and access node E generate quantum routing tables, and generate relay routing tab...

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Abstract

The present invention relates to a quantum communication-based backbone network system and its relay method. The method enables the access nodes of all metropolitan area networks in the backbone network to perform key relay in advance according to a certain strategy, and realizes the key relay of all metropolitan area networks. The access nodes directly use the relay key for secure communication; at least one server is set up for the access node and the relay node, and the access node automatically initiates relay to other access nodes at regular intervals; the access node The respective key management terminals of the entry node and the relay node regularly report the calculated key amount to the server connected to it; the server generates a quantum routing table and a relay routing table respectively according to the type of the shared key amount, And calculate the path key amount and send it to the access node and the relay node, and each access node performs automatic relay according to the routing table and the path key amount obtained from the server.

Description

technical field [0001] The invention belongs to the technical field of quantum communication, and in particular relates to a quantum communication-based backbone network system and a relay method thereof. Background technique [0002] Quantum communication refers to a new communication method that uses quantum states for information transmission, and is the result of the combination of quantum theory and information theory. Quantum communication has the characteristics of unconditional security and high efficiency, which has brought revolutionary development to information security. It is the main research direction of international quantum physics and information science. The main forms of quantum communication include quantum key distribution (Quantum Key Distribution) ), Quantum Dense Coding (Quantum Dense Coding) and Quantum Teleportation (Quantum Teleportation), etc. On the other hand, the information transmitted by quantum communication can be divided into two categori...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/08H04L29/06
CPCH04L9/0852H04L9/0855H04L63/06
Inventor 徐振尹飞
Owner QUANTUMCTEK
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