Terminal Contention Resource Selection Across Time-Frequency Slots
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing increased communication traffic and ensuring reliable, low-latency data transmission, particularly in scenarios like eMBB, URLLC, and mMTC, where devices struggle to select contention resources effectively using random access schemes.
Innovation Solution
A method and apparatus for terminals and readers to efficiently select and utilize contention resources by receiving and transmitting messages based on contention resource information distinguished by time and frequency, allowing for dynamic slot length determination and collision resolution in IoT devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If terminals use random access schemes to transmit data, then communication traffic can be handled, but resource selection efficiency deteriorates and collisions occur
Solution Approach 1:
The patent changes the parameters of contention resources by introducing distinct time and frequency resource configurations. Terminals select specific frequency resources and time slots based on received contention resource information, transforming the random access process into a more structured parameter-based selection mechanism that improves efficiency while maintaining traffic handling capacity.
2Ease of operation
If contention resources are distinguished by time and frequency, then resource selection efficiency improves, but system complexity increases
Solution Approach 1:
The patent segments contention resources into distinct time and frequency domains, with terminals selecting specific combinations of frequency resources and time slots. This segmentation allows for more efficient resource selection by dividing the overall resource space into manageable, independently selectable components, reducing the complexity of the selection process while improving efficiency.
3Productivity
If multiple terminals transmit simultaneously using random access, then communication throughput increases, but collisions increase and reliability decreases
Solution Approach 1:
The patent introduces an additional dimension for resource selection by combining frequency resource selection with time slot selection. Terminals choose contention resources based on both frequency domain parameters and time domain parameters, creating a multi-dimensional resource selection space that reduces collision probability while maintaining high throughput capacity through parallel transmissions.
Data Source
AI summary
Provided are a method and apparatus for selecting contention resources of a terminal in a wireless communication system. A terminal receives, from a reader, at least one contention resource information distinguished by time and frequency resources, select at least one contention resource based on the received at least one contention resource information. Then, the terminal transmits, to the reader, a first message on a first frequency resource in a time domain corresponding to the selected at least one contention resource. The first message includes information triggered by the received at least one contention resource information. Thereafter, the terminal receives, from the reader, a second message in response to the transmitted first message.