Contention Resource Unit Autonomous Selection for Wireless Latency
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in transmitting and receiving wireless signals, particularly in multiple access systems where resource management and scheduling can lead to suboptimal performance, especially in scenarios with multiple users and varying channel conditions.
Innovation Solution
A method and apparatus for a user equipment (UE) in a wireless communication system that employs a contention resource unit (CRU) for autonomous resource selection and contention-based data transmission, allowing multiple UEs to select available resources without explicit scheduling, thereby improving data transmission efficiency and reducing latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If explicit scheduling is used for resource allocation, then resource management control is improved, but transmission latency and system complexity increase
Solution Approach 1:
The patent enables user equipment to autonomously select resources for data transmission without requiring explicit scheduling from the base station. The UE independently monitors downlink carriers, selects uplink transmission resources based on predefined rules, and performs transmission, thereby eliminating scheduling request and allocation delays while maintaining systematic resource management through predefined protocols
Solution Approach 2:
The system pre-configures multiple downlink carriers and uplink transmission resources before data transmission occurs. The base station prepares downlink data on multiple carriers in advance, and the UE has pre-defined resource selection rules ready, allowing immediate transmission when data arrives without waiting for scheduling decisions
2Reliability
If traditional scheduled access is used, then resource allocation control is maintained, but data transmission efficiency decreases
Solution Approach 1:
The patent divides the uplink transmission resources into multiple independent contention resource units, each associated with specific downlink carriers. This segmentation allows multiple UEs to simultaneously select and transmit on different resource units, increasing overall system throughput while maintaining controlled resource allocation through the segmented structure
Solution Approach 2:
The system dynamically allows UEs to select from multiple available uplink resources based on current downlink channel conditions and data arrival timing. The resource selection is flexible and adaptive, enabling UEs to choose the most appropriate transmission opportunity, thereby improving data transmission efficiency while maintaining allocation control
3Loss of time
If autonomous resource selection is implemented, then transmission latency is reduced, but resource collision probability increases
Solution Approach 1:
The patent introduces multiple downlink carrier dimensions and associates each with dedicated uplink contention resources. By adding this dimensional separation, the system allows UEs to select resources based on which downlink carrier their data arrived on, reducing collisions through dimensional differentiation while maintaining autonomous selection benefits
Solution Approach 2:
The base station acts as an intermediary that monitors the contention-based transmissions from multiple UEs. When collisions or interference are detected, the base station can intervene by sending scheduling assignments or retransmission requests, thereby managing collision probability while preserving the low-latency autonomous selection mechanism
Data Source
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AI summary
The present invention relates to a wireless communication system and particularly to a method and a device for the method, the method comprising: a step of receiving data on a competition-based resource pool; a step of selecting, based on the size of the data, N number of competition-based resources from a plurality of competition-based resources constituting the competition-based resource pool; and a step of transmitting the data to a base station by using the N number of competition-based resources, wherein N is indicated via a reference signal transmitted along with the data.