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2020 5th International Conference on Technologies in Manufacturing, Information and Computing (ICTMIC 2020)

Design of Multi Granularity Quantum Switching Node Structure for Embedded Intelligent System

Liu Xingjian

Published Jan 1, 2020• 0 citations
Publisher

Abstract

The load-bearing modes of power man services are quite different.Network switching nodes not only need to support the exchange of quantum signal, synchronous signal and classic signal, but also need to have multi granularity signal exchange function to support the encrypted transmission of power services with different service levels.The multi granularity quantum switch node structure based on fiber level switch layer, band level switch layer and wavelength level switch layer is adopted to improve the flexibility of switch node and reduce the scale of cross connection matrix.At the same time, the wavelength selection switch is introduced into the multi granularity quantum switching node, which ensures the same path exchange between the quantum signal and the synchronous signal of the same user through the programmable flexible wavelength selection.The simulation results show that the quantum switch node structure is feasible in the application of power man.

DOI
10.25236/ictmic.2020.068

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The load-bearing modes of power man services are quite different.Network switching nodes not only need to support the exchange of quantum signal, synchronous signal and classic signal, but also need to have multi granularity signal exchange function to support the encrypted transmission of power services with different service levels.The multi granularity quantum switch node structure based on fiber level switch layer, band level switch layer and wavelength level switch layer is adopted to improve the flexibility of switch node and reduce the scale of cross connection matrix.At the same time, the wavelength selection switch is introduced into the multi granularity quantum switching node, which ensures the same path exchange between the quantum signal and the synchronous signal of the same user through the programmable flexible wavelength selection.The simulation results show that the quantum switch node structure is feasible in the application of power man.
Quantum key distribution (QKD) is a key technology widely used in quantum communication technology, which can achieve unconditionally secure information transmission. At present, the quantum-classical fusion is often used to construct QKD networks, thus enhancing the security level of the current communication network. In addition, the design of the switching node structure of the optical network is related to the planning and deployment of the entire communication network, which helps to build a flexible and scalable communication network. However, in the quantum-classical fusion network, due to the extremely weak quantum signal, it is susceptible to the crosstalk from the classical signal and the phase drift caused by the change of external environment in the transmission process. In this paper, a multi-layer optical network switching node based on the quantum-classical fusion is designed to enable QKD to be integrated into existing classical networks. The node uses conventional device to enable the isolation of quantum signals from classical and synchronization signals to reach more than 30 dB, and to increase the capacity of the switching node with flexibility and scalability.
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We propose a novel multi-core fiber (MCF)-based quantum CDC-ROADM (MCF-QROADM) with multigranularity switching function. MCF-QROADM uses MCFs as the fibers of the port to improve transmission capacity. Moreover, MCF-QROADM can pass through fewer devices to achieve the function of multi-granularity switching, which can reduce the loss of the quantum signal caused by the switch node architecture, and thus increase the transmission distance of quantum signals. In addition, MCF-QROADM can achieve the function of colorless, directionless and contentionless (CDC) through the design of reasonable add and drop modules. The simulation results show that MCF-QROADM has a better performance than the existing architectures.
This paper proposes an information encryption transmission method for power system communication network based on quantum security communication technology, which can effectively encrypt the information in power system and ensure the security of information transmission. Based on quantum secure communication technology, the communication network architecture of power system is constructed. Quantum-layer quantum key distribution Network (QKD) uses BB84 protocol to realize quantum information exchange and optical synchronization, provide quantum key to control layer, and encrypt network information of power system. The control layer is responsible for monitoring QKD status, reasonably managing keys, and issuing communication commands to the communication layer. The communication layer switch encrypts and transmits the power system communication network data generated by the application layer through the minimum attenuation routing algorithm according to the controller instruction. Experiments show that this method can realize the information encryption of power system communication network, and the quantum key encryption function, key source exchange function and the number of encryption services meet the requirements. The application of this method can improve the throughput and communication connectivity of power system communication network.
In recent years, many eavesdropping and interception incidents against optical networks have shaken people's understanding of optical network security. The security of optical networks is attracting more and more researchers' attention. Aiming at the security problems in automatically switched optical network (ASON), this paper proposes a three-layer ASON secure communication model that separates the control plane, management plane and transport plane, and a quantum key distribution (QKD) mechanism based on the model. The ASON intelligent software controller divides the classic channel into three types of channels: quantum signal channel (QSCh), pulic interaction channel (PICh) and traditional data channels (TDCh), which are used for quantum transmission, quantum bit synchronization and data transmission separately, and the session key provided by the ASON intelligent network element through the QKD mechanism, The data is encrypted to achieve secure transmission of ASON classic channel data. The effects of QKD mechanism on ASON under different quantum signal source (QSS) code rate, load and intelligent network element (INU) node spacing are simulated and analyzed. The results show that the scheme guarantees the security of the system while increasing the finite delay and reducing the load and has practical feasibility.