Cellular Uplink Dummy Data for Pattern-Based Anti-Jamming
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Solution Overview
Problem
Cellular communication systems are vulnerable to intentional jamming due to regular transmission patterns, particularly in services requiring low-latency and high reliability, which can be exploited by jamming devices to interfere with uplink transmissions.
Innovation Solution
Terminal devices transmit dummy data in time-frequency resources shared with payload data, using pseudo-random generators to break the regularity of transmission patterns, and coordinate with other devices to appear as a single virtual entity, facilitating interference cancellation at the access node.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminal devices use persistent or semi-persistent scheduling with periodic transmission resources, then low-latency transmissions with high reliability are achieved, but the transmission patterns become predictable and vulnerable to jamming
Solution Approach 1:
The patent applies dynamics by making the transmission pattern changeable rather than fixed. Terminal devices dynamically adjust their transmission characteristics by inserting dummy data transmissions at random positions, transforming the static periodic pattern into a dynamic one that adapts to prevent jamming while maintaining communication reliability.
Solution Approach 2:
The patent uses copying by creating dummy data transmissions that replicate the structure of legitimate payload transmissions. These dummy transmissions copy the transmission pattern and resource allocation characteristics of real data, making it difficult for jamming systems to distinguish between actual communications and decoy signals.
2Object-affected harmful factors
If terminal devices transmit dummy data in shared time-frequency resources, then transmission pattern regularity is masked and jamming effectiveness is reduced, but interference cancellation complexity increases
Solution Approach 1:
The patent applies merging by combining dummy data transmissions with legitimate payload transmissions in the same time-frequency resources. Multiple terminal devices transmit dummy data simultaneously, merging their signals to create a composite interference pattern that masks individual transmission regularities and complicates jamming detection.
Solution Approach 2:
The patent uses intermediary by introducing dummy data as a mediator between the terminal device and the jamming system. The dummy data acts as a decoy that interferes with the jammer's ability to accurately target and disrupt legitimate communications, thereby protecting the actual payload transmissions.
3Device complexity
If multiple terminal devices coordinate to transmit dummy data as a single virtual entity, then interference cancellation is simplified, but coordination overhead and system complexity increase
Solution Approach 1:
The patent applies universality by designing a coordination mechanism that can be implemented across multiple terminal devices using standard communication protocols and existing network infrastructure. The dummy data transmission framework is universal, allowing different devices to participate without requiring specialized hardware or complex proprietary coordination systems.
Data Source
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AI summary
This document discloses a solution for performing anti-jamming procedures. According to an aspect, a method for a terminal device comprises: receiving a first reference signal allocation from an access node, wherein the first reference signal is unique to the terminal device in a cell managed by the access node; receiving a second reference signal allocation from the access node, wherein the second reference signal is shared with at least one other terminal device in the cell; causing transmission of payload data together with the first reference signal according to a regular transmission pattern; and breaking the regular transmission pattern by transmitting dummy data together with the second reference signal in a time-frequency resource shared with the at least one other terminal device.