Quantum Key Distribution Network Mobile Terminal Binding
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Solution Overview
Problem
Current mobile secure communication methods based on quantum key distribution networks face challenges in meeting the requirements of mobile communication services, particularly in high real-time services, due to delayed key arrival caused by numerous relay nodes and complex system modifications, leading to poor user experience and increased costs.
Innovation Solution
A mobile secure communication method that employs key relay instead of ciphertext relay, where service keys are generated and distributed through a quantum key distribution network, allowing mobile terminals to obtain unique quantum identity numbers, establish binding relationships with centralized control stations, and dynamically allocate service keys for secure communication, reducing the need for extensive system modifications and improving key distribution efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ciphertext relay is adopted in quantum secure communication network, then security is improved, but system complexity and modification costs increase drastically
Solution Approach 1:
The patent extracts the quantum security function from the entire communication system, isolating it to only the key distribution and relay processes. The ciphertext transmission remains in the conventional network, while only quantum keys are generated and relayed through the quantum secure network. This separation reduces system complexity while maintaining security.
Solution Approach 2:
The quantum centralized control stations are designed to perform multiple functions: generating quantum keys, relaying keys between nodes, and managing quantum network resources. This multi-functionality reduces the need for separate dedicated security systems, thereby reducing overall system complexity.
2Reliability
If ciphertext relay is adopted in quantum secure communication network, then security is improved, but development and configuration costs increase
Solution Approach 1:
The patent extracts only the essential quantum key distribution functionality from a complete quantum communication infrastructure, allowing deployment without modifying existing conventional communication systems. This reduces development and configuration costs by leveraging existing network infrastructure.
Solution Approach 2:
Quantum keys are generated and distributed in advance before actual communication occurs. This preliminary key distribution allows communication services to begin immediately without real-time key generation delays, reducing configuration complexity and costs.
3Area of stationary object
If numerous relay nodes are used in quantum key distribution, then key distribution coverage is improved, but key arrival delay increases
Solution Approach 1:
The patent implements preliminary key generation and distribution before communication services are initiated. Quantum centralized control stations generate and relay service keys in advance, allowing keys to be ready when communication begins, thus reducing actual key arrival delay during service operation.
Solution Approach 2:
The quantum key distribution system operates continuously, with centralized control stations constantly generating and distributing quantum keys to multiple nodes. This continuous operation ensures key availability across the network without interruption, maintaining both wide coverage and low delay.
4Loss of time
If service keys are downloaded before communication initiation, then communication start time is improved, but key management complexity increases
Solution Approach 1:
The patent introduces quantum centralized control stations as intermediaries that manage key distribution automatically. These stations handle key generation, encryption, relay, and delivery to mobile terminals, abstracting the complexity from end users and simplifying key management while enabling advance key download.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances compatibility with existing communication services, reduces delay in high real-time services, and improves the quality of service by allowing secure communication to begin promptly, with service keys being downloaded before communication initiation, thus improving key relay efficiency and adapting to mobile communication characteristics.
Implementation Method 1
The quantum key distribution technology is a new means of communication encryption emerging in recent years, which uses the single-photon quantum states encoding information to distribute a same string of random numbers of arbitrary length between a quantum signal transmitter and a quantum signal receiver located at different places
Implementation Method 2
Due to the indivisibility of a single photon and quantum no-cloning theorem, the quantum key distribution can't be eavesdropped according to physical principles, having the highest level of security at present
Data Source
AI summary
A mobile secret communications method based on a quantum key distribution network, comprises the following steps: a mobile terminal registering to access the network and establishing a binding relationship with a certain centralized control station in the quantum key distribution network; after a communication service is initiated, the mobile terminals participating in the current communication applying for service keys from the quantum key distribution network; the quantum key distribution network obtaining addresses of the centralized control stations participating in service key distribution during the current communication, designating a service key generation centralized control station according to a current state indicator of each centralized control station; the service key generation centralized control station generating service keys required in the current communication and distributing the keys to the mobile terminals participating in the current communication.