LTE Private Network Conversion via Signal Translation
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Solution Overview
Problem
Existing LTE networks face challenges in maintaining security and preventing unauthorized access, as the standard protocol allows any LTE device to synchronize with the network, which can lead to Denial of Service (DoS) attacks and unauthorized connections in private networks.
Innovation Solution
A system and method that convert non-standard control signals in LTE networks into standard signals, using a conversion function to allow only authorized devices to connect, by employing a module or add-on that translates synchronization signals and extracts specific information like the Physical Cell ID, enabling the creation of private LTE networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If standard LTE protocol is used to allow any device to connect to the network, then network accessibility and ease of operation are improved, but network security and reliability deteriorate due to unauthorized access and DoS attacks
Solution Approach 1:
The patent introduces a conversion function as an intermediary component that sits between the standard LTE protocol and the network core. This conversion function translates non-standard control signals into standard signals, allowing authorized devices with the conversion function to access the private network while blocking unauthorized devices. The intermediary enables selective accessibility without compromising security.
Solution Approach 2:
The patent applies local quality by making the network protocol non-standard in specific areas (control signals) while maintaining standard compatibility in other areas. By modifying only the necessary control signal formats and introducing selective translation, the network achieves localized security enhancements without requiring complete protocol redesign, thus maintaining ease of operation for authorized devices while improving reliability.
2Reliability
If non-standard control signals are used to prevent unauthorized access, then network security is improved, but device compatibility and ease of operation worsen
Solution Approach 1:
The conversion function serves as a mediator that handles the incompatibility between non-standard control signals and standard LTE devices. Authorized devices equipped with the conversion function can translate and interpret the non-standard signals, maintaining compatibility while enabling security. This intermediary approach allows the network to use non-standard signals for security without sacrificing device compatibility for authorized users.
Solution Approach 2:
The patent changes specific parameters of the control signals (making them non-standard) to enhance security, while the conversion function dynamically adapts these parameter changes for authorized devices. The conversion function modifies signal parameters selectively, allowing the network to use enhanced security parameters while maintaining operational compatibility through dynamic parameter translation.
3Reliability
If conversion function is added to translate control signals, then network security and reliability are improved, but device complexity increases
Solution Approach 1:
The patent extracts the conversion function as a separate, modular component rather than integrating it deeply into the core device architecture. This extraction allows the conversion functionality to be added as an optional module or software layer, minimizing the impact on overall device complexity. The conversion function handles signal translation in isolation, reducing the complexity burden on the main device system while still providing enhanced security.
Data Source
AI summary
A method for converting a conventional cellular network e.g. having nodes equipped with conventional modems operating in accordance with a cellular communication protocol e.g. LTE and storing first orthogonal sequences, into a private cellular network, including coupling an (e.g. external) device to only nodes sought for the private cellular network, the device storing second orthogonal sequences not hard-coded in the modems, the device storing a one-to-one correspondence enabling translation of each second orthogonal sequence, to one of the first sequences. at least when in a private network supporting mode, a device associated with a transmitting node sought for the private network, uses a processor to determine which first orthogonal sequence is being used, translate that sequence using the one-to-one correspondence into a second orthogonal sequence, and use the translated sequence to transmit a synchronization signal.