Scheduling Request Priority Determination in 5G NR Terminals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In 5G NR systems, scheduling requests from terminal devices can collide in the time domain, leading to resource allocation challenges due to the support of multiple service types, whereas LTE systems only handle one service type and thus avoid collisions.
Innovation Solution
A method for determining priorities of scheduling requests in a terminal device to select an appropriate request for transmission when collisions occur, using criteria such as symbol duration, transmission duration, unsuccessful transmission counts, and orthogonal cover code usage to differentiate and prioritize scheduling requests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If 5G NR systems support multiple service types, then service versatility is improved, but scheduling request collision in time domain occurs
Solution Approach 1:
The patent introduces priority parameters associated with different service types to differentiate scheduling requests. When collisions occur, the terminal device compares priority parameters to determine which scheduling request to transmit, thereby resolving the contradiction between supporting multiple service types and avoiding scheduling request collisions.
2Productivity
If multiple scheduling requests are transmitted simultaneously, then service coverage is improved, but resource allocation conflict occurs
Solution Approach 1:
The patent establishes priority parameters for different service types in advance, before collisions occur. This preliminary differentiation allows the terminal device to quickly determine which scheduling request to transmit when collisions happen, improving transmission efficiency while simplifying real-time resource management decisions.
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
This application provides a method for determining priorities of scheduling requests, a terminal device, and a base station. The method includes: determining, by a terminal device, that a first time domain resource collides with a second time domain resource, where the first time domain resource is used to transmit a first scheduling request, and the second time domain resource is used to transmit a second scheduling request; determining, by the terminal device, a priority of the first scheduling request and a priority of the second scheduling request according to first priority information of the first scheduling request and first priority information of the second scheduling request; and when determining that the priority of the first scheduling request is higher than the priority of the second scheduling request, sending, by the terminal device, the first scheduling request to a base station; or when determining that the priority of the first scheduling request is lower than the priority of the second scheduling request, sending, by the terminal device, the second scheduling request to the base station. According to the foregoing technical solution, the terminal device can select a scheduling request for sending to the base station when a collision occurs between the time domain resources of the two scheduling requests. Therefore, the collision between the time domain resources of the two scheduling requests is resolved.