Adaptive Access Scheme Selection for Wireless Signal Transmission
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Solution Overview
Problem
Current wireless communication systems, particularly in LTE, face challenges in efficiently enabling direct communication between user equipment (UEs) due to differences in requirements compared to legacy LTE communication, leading to issues with signal transmission and reception efficiency, especially in scenarios with high access attempt probabilities.
Innovation Solution
A method and device that adapt the signal access scheme based on the access attempt probability, employing either random access or scheduled access, where the transmitter and receiver use predefined resources and coding rates to optimize signal transmission and reception, particularly in device-to-device (D2D) communication scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If random access scheme is used for signal transmission, then ease of operation is improved, but collision probability increases in high-load scenarios
Solution Approach 1:
The patent applies dynamics by making the access scheme adjustable rather than fixed. The base station dynamically switches between random access and scheduled access schemes based on the number of access attempts, allowing the system to adapt to changing load conditions and optimize both ease of operation and reliability
2Reliability
If scheduled access scheme is used for signal transmission, then communication reliability is improved, but device complexity increases
Solution Approach 1:
The patent applies local quality by applying different access schemes to different situations rather than uniformly across all scenarios. Random access is used when access attempts are below a threshold (simpler operation), while scheduled access is used when attempts exceed the threshold (higher reliability), making each part of the system have the appropriate complexity for its specific function
3Productivity
If access attempt probability increases, then productivity of signal transmission attempts is improved, but collision frequency increases
Solution Approach 1:
The patent applies feedback by using the number of access attempts as a feedback signal to adjust the access scheme. When access attempts exceed a predetermined threshold, the system switches to scheduled access, which reduces collision frequency while maintaining high productivity of signal transmission attempts
Data Source
AI summary
The present invention provides a method and a device for differing the scheme of accessing a reception device on the basis of the probability of attempted access to the reception device or an indicator similar thereto. The transmission device according to the present invention transmits signals according to a first scheme or a second scheme on the basis of access attempts or indicators similar thereto and receives signals according to the first scheme or second scheme on the basis of the access attempts or indictors similar thereto.