Preamble Sequence Resource Mapping for Signal Detection Complexity
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Solution Overview
Problem
In passive Internet of Things communication, the complexity of signal detection at the base station is high due to the need to detect multiple preamble sequences from multiple terminal devices, leading to increased signal collision and reduced transmission efficiency.
Innovation Solution
A frame structure signal is transmitted with a preamble sequence associated with a specific transmission resource, allowing the base station to detect only the corresponding preamble sequence, reducing detection complexity and collision probability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple preamble sequences are transmitted from multiple terminal devices, then communication capacity is improved, but signal collision increases and detection complexity increases
Solution Approach 1:
The patent segments the detection process by dividing preamble sequences into different groups based on transmission resources. Each group corresponds to specific time-frequency resources, allowing the base station to segment the detection task into smaller, manageable subsets rather than detecting all preamble sequences simultaneously across all resources.
Solution Approach 2:
The patent applies local quality by making different preamble sequences have different detection priorities and strategies based on their associated transmission resources. Preamble sequences detected on occupied transmission resources receive focused attention, while those on unoccupied resources are handled differently, optimizing detection effort allocation.
2Productivity
If multiple preamble sequences are transmitted from multiple terminal devices, then communication capacity is improved, but signal collision probability increases
Solution Approach 1:
The patent introduces a new dimension for collision avoidance by associating preamble sequences with specific transmission resources in the time-frequency domain. Instead of treating all preamble sequences equally, the system dimensions the detection space by linking each preamble to its resource allocation, enabling more sophisticated collision detection and resolution strategies.
Solution Approach 2:
The patent implements feedback mechanisms where the base station detects preamble sequences on specific transmission resources and provides feedback information back to terminal devices. This feedback loop enables dynamic adjustment of transmission parameters to avoid future collisions, improving overall system reliability.
3Loss of information
If all preamble sequences are detected at the base station, then complete information is obtained, but detection time increases
Solution Approach 1:
The patent applies preliminary action by pre-organizing preamble sequences into groups based on their transmission resource associations before detection begins. This preliminary classification allows the base station to quickly identify which preamble groups need detection based on current transmission resource usage, avoiding unnecessary detection of all preamble sequences.
Solution Approach 2:
The patent implements partial action by detecting only the necessary subset of preamble sequences based on transmission resource occupancy. Instead of exhaustively detecting all possible preamble sequences, the system performs detection only on those associated with actively used transmission resources, reducing detection time while maintaining information completeness.
Data Source
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AI summary
Provided are a signal transmission method and apparatus, and a computer-readable storage medium. The signal transmission method comprises: determining a preamble sequence and a transmission resource; sending a frame structure signal by means of the transmission resource, wherein the frame structure signal comprises the preamble sequence and a data block, and the preamble sequence is located before the data block; detecting the preamble sequence; and when the preamble sequence in the frame structure signal is detected, acquiring a data frame structure signal of the data block in the frame structure signal on the basis of the transmission resource.