Terminal UL Cancellation for Priority Control in Shared PLMN Resources
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Solution Overview
Problem
In future radio communication systems, resource sharing between multiple business operators requires effective communication control to manage priorities and prevent UL transmission collisions, which has not been sufficiently addressed.
Innovation Solution
A terminal equipped with a receiving section for downlink control information and a control section to determine UL transmission cancellation based on priority, allowing appropriate communication control even in shared resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If resource sharing is performed between multiple business operators, then frequency range utilization efficiency is improved, but communication control complexity increases due to priority management requirements
Solution Approach 1:
The patent introduces a priority indication parameter in the downlink control information to manage UL transmission conflicts. By changing the parameter structure to include priority indicators, the system can efficiently control resource sharing between multiple business operators without increasing overall system complexity.
Solution Approach 2:
The terminal uses feedback from the priority indication in downlink control information to determine whether to cancel UL transmission. This feedback mechanism allows the system to maintain simple control logic while achieving efficient resource sharing through operator priority management.
2Reliability
If UL transmission cancellation is implemented based on priority, then transmission collision is reduced, but control decision complexity increases
Solution Approach 1:
The terminal autonomously determines whether to cancel UL transmission by comparing its own priority with the indicated priority in downlink control information. This self-service approach eliminates the need for complex centralized control while reliably reducing transmission collisions through priority-based decision making.
Data Source
AI summary
A terminal according to an aspect of the present disclosure includes a receiving section that receives first downlink control information scheduling a first UL transmission in a resource and second downlink control information indicating cancel of a UL transmission, the resource being supported to be shared between a plurality of Public Land Mobile Networks (PLMNs), and a control section that determines whether to cancel the first UL transmission based on at least one of a priority of the first UL transmission scheduled by the first downlink control information and the second downlink control information.