Terminal Group Priority Radio Resource Access
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Solution Overview
Problem
Contention-based uplink access in future communication networks faces low resource utilization ratios despite reduced latency and improved capacity, necessitating an improved solution to enhance resource utilization while maintaining a low collision ratio.
Innovation Solution
Terminal devices are grouped based on priority, with lower-priority devices accessing radio resources that do not conflict with higher-priority groups, allowing for efficient resource allocation and minimizing collisions by using orthogonal multiplexing codes and indicators to select unoccupied resource blocks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If contention-based uplink access is used to reduce latency and improve capacity, then uplink access latency is reduced and capacity is improved, but resource utilization ratio becomes low
Solution Approach 1:
The patent segments terminal devices into different priority groups (first priority group and second priority group) and divides the resource pool into first resource blocks and second resource blocks. This segmentation allows different groups to access different resources, eliminating collisions between groups while improving overall resource utilization. High-priority devices access first resource blocks without contention, while low-priority devices access second resource blocks only when not conflicting with high-priority devices.
2Loss of time
If terminal devices contend for radio resources based on predefined rules, then access latency is reduced, but collision ratio increases and resource utilization decreases
Solution Approach 1:
The patent segments terminal devices into priority groups and assigns different resource blocks to each group. This segmentation eliminates collisions between different priority groups since they access different resources, thereby improving reliability while maintaining low latency through the contention-based mechanism within each group.
Solution Approach 2:
The patent applies different access rules to different priority groups. High-priority devices have preferential access to first resource blocks, while low-priority devices access second resource blocks with the constraint of not conflicting with high-priority devices. This local differentiation of access quality resolves the contradiction by ensuring low collision ratio through priority-based resource allocation while maintaining fast access through contention-based mechanisms within each group's allocated resources.
Data Source
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AI summary
The present disclosure provides a method (100) in a terminal device for radio resource access. The method (100) comprises: determining (S110) a terminal group to which the terminal device belongs, the terminal group having a first group priority; accessing (S120) radio resources that do not conflict with any terminal device belonging to any terminal group having a higher group priority than the first group priority.