Scrambling Sequence Generation Using Channel Information
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Solution Overview
Problem
Existing communication systems face security risks due to the interception of identification parameters used in generating scrambling sequences, leading to information leakage and potential theft or imitation, especially in scenarios where the identification parameters are transmitted over an air interface.
Innovation Solution
Generate a target sequence initial seed based on target channel information, which is an exclusive parameter between a transmitter and a receiver, using methods such as quantization of amplitude and phase information, or mapping information in the Fourier transform domain, to create a secure scrambling sequence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If identification parameters are transmitted over air interface for generating scrambling sequences, then sequence generation is enabled, but security risks increase due to interception leading to information leakage
Solution Approach 1:
The patent extracts the harmful identification parameters from the transmission process and replaces them with channel information that is inherently secure and difficult to intercept. By taking out the vulnerable parameters and substituting them with robust channel-based information, the system eliminates the security risk while maintaining sequence generation functionality
Solution Approach 2:
The patent changes the fundamental parameter used for sequence generation from transmitted identification parameters to channel information (such as channel state information, amplitude, phase, or Fourier transform domain information). This parameter change transforms the system from one vulnerable to interception to one that leverages the inherent security of physical channel characteristics
2Reliability
If channel information is used to generate scrambling sequences, then security is enhanced, but system complexity increases due to additional processing requirements
Solution Approach 1:
The patent employs self-service by utilizing channel information that is already available in the communication system for other purposes (such as channel estimation and equalization). The same channel information is reused for scrambling sequence generation, eliminating the need for separate information collection and reducing additional processing complexity
Solution Approach 2:
The patent applies multi-functionality by making channel information serve dual purposes: traditional channel processing functions and scrambling sequence generation. This universal use of channel information reduces overall system complexity despite the enhanced security benefits
Data Source
AI summary
A method for generating a sequence is provided in the present disclosure. The method is applicable to a transmitter and the method includes: generating a target sequence initial seed based on target channel information, wherein the target channel information is channel information corresponding to a link between the transmitter and a receiver.