Backbone network system based on quantum communication and relay method thereof

A quantum communication and backbone network technology, which is applied in the quantum communication-based backbone network system and its relay field, can solve the problems of unbalanced access node keys, too long relay path, and inability to maintain real-time relay.

Active Publication Date: 2018-07-10
QUANTUMCTEK +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 r...

Method used

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  • Backbone network system based on quantum communication and relay method thereof
  • Backbone network system based on quantum communication and relay method thereof
  • Backbone network system based on quantum communication and relay method thereof

Examples

Experimental program
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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 invention relates to a backbone network system based on quantum communication and a relay method thereof. According to the method, key relaying is performed between the access nodes of all the metropolitan area networks of the backbone network in advance according to a certain strategy so that the access nodes of all the metropolitan area networks are enabled to perform secret communication byusing the relay key; at least one server side is set for the access nodes and the relay nodes, and the access nodes periodically and automatically initiate relaying to other access nodes; the respective key management terminal of the access nodes and the relay nodes periodically reports the calculated key amount to the connected server side; and the server side respectively generates a quantum routing table and a relay routing table according to different shared key amount types and calculates the path key amount to be issued to the access nodes and the relay nodes, and each access node performs automatic relaying according to the routing table and the path key amount acquired from the server side.

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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IPC IPC(8): H04L9/08H04L29/06
CPCH04L9/0852H04L9/0855H04L63/06
Inventor 徐振尹飞
Owner QUANTUMCTEK
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