Off-Slot Grid Communication for Anti-Eavesdropping Wireless Links
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Solution Overview
Problem
Current wireless communication systems, particularly 5G and beyond, face challenges in physical layer authentication and security due to decentralized network architectures and the integration of cloud and device technologies, which create vulnerabilities to eavesdropping and denial-of-service attacks.
Innovation Solution
Implementing off-slot grid communication by randomizing the slot structure, where each time-frequency resource in a set of slots has a different duration, enhancing physical layer security through MIMO beamforming in sub-terahertz bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional wireless communication systems are used, then communication functionality is provided, but physical layer authentication and security are vulnerable to eavesdropping and denial-of-service attacks
Solution Approach 1:
The patent applies dynamics by making the slot structure non-static and variable. Different slots have different durations, and the slot structure is randomly configured rather than fixed. This dynamic approach prevents eavesdroppers from predicting communication patterns, thereby enhancing physical layer security while maintaining reliable communication functionality.
Solution Approach 2:
The patent introduces asymmetry in the slot structure where slots have different durations instead of uniform fixed durations. This asymmetric configuration creates unpredictability in the time-frequency resources allocation, making it difficult for eavesdroppers to intercept communications and improving resistance against denial-of-service attacks.
2Reliability
If off-slot grid communication with randomizing slot structure is implemented, then physical layer security is enhanced, but device complexity increases
Solution Approach 1:
The patent changes the parameters of the slot structure, specifically the duration of each slot, to create a random off-slot grid communication pattern. By varying these parameters rather than using fixed uniform slots, the system achieves enhanced security without requiring complex additional hardware or processing mechanisms.
Data Source
AI summary
A UE may identify a set of time-frequency resources for off-slot grid communication with a network node. Similarly, the network node may identify the set of time-frequency resources for off-slot grid communication with a UE. Based on the off-slot grid communication, each of the set of time-frequency resources may be a different time-frequency resource in a different slot. At least two slots may be associated with different durations. The UE and the network node may communicate with each other based on the set of time-frequency resources and the off-slot grid communication. The set of time-frequency resources may correspond to at least one of a time offset in relation to a slot, a frequency offset, a carrier frequency, an SCS, or a bandwidth.