Terminal Device PUCCH Resource Selection for Scheduling Requests

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Solution Overview

Problem

In new radio (NR) systems, scheduling requests (SR) configurations for physical uplink control channel (PUCCH) resources can lead to collisions among logical channels due to multiple SR configurations mapping to different PUCCH resources, resulting in inefficient transmission.

Innovation Solution

A method for determining target PUCCH resources based on priority, where the terminal device selects PUCCH resources corresponding to logical channels with the highest priority to transmit scheduling requests, potentially using multiple resources or random selection, thereby avoiding collisions and improving transmission efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple SR configurations are mapped to different PUCCH resources for different logical channels, then the system supports diverse logical channel requirements, but PUCCH resource collisions occur at the same time point

Engineering Contradiction:

Improvesupport for diverse logical channel requirementsVSAvoidPUCCH resource collision

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent changes the parameter of PUCCH resource selection by introducing priority-based selection mechanism. When multiple PUCCH resources are available at the same time point, the terminal device selects resources based on logical channel priorities, transforming the resource allocation from a static mapping to a dynamic selection process that avoids collisions

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent introduces dynamic selection of PUCCH resources based on priority levels. Instead of fixed one-to-one mapping between logical channels and PUCCH resources, the system dynamically selects which PUCCH resource to use based on the priority of logical channels that need to transmit SR, allowing flexible adaptation to avoid resource collisions

Inventive Principle:

Principle #15Dynamics

2Device complexity

If one set of PUCCH resources is allocated per logical channel per cell, then resource allocation is simplified, but transmission efficiency decreases when multiple logical channels need simultaneous SR transmission

Engineering Contradiction:

Improveresource allocation complexityVSAvoidSR transmission efficiency

Core Design Contradiction:

Device complexityVSProductivity

Solution Approach 1:

The patent makes PUCCH resources universal by allowing multiple logical channels to share and select from the same set of PUCCH resources based on priority. Instead of dedicating exclusive resources to each logical channel, the system enables multiple channels to access the same resources at different times or through priority-based selection, improving resource utilization efficiency

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS11212785B2Method for transmitting scheduling request and terminal device

Publication Date: 2021.12.28 SHENZHEN HEYTAP TECHNOLOGY CO LTD

AI summary

Embodiments of the present disclosure provide a method and a terminal device for transmitting a scheduling request. The method includes: determining that there are a plurality of PUCCH resources at a target time point, where the plurality of PUCCH resources correspond to different SR configurations, and the different SR configurations correspond to different logical channels; determining one or more target PUCCH resources among the plurality of PUCCH resources according to priorities of the different logical channels; and transmitting one or more SRs to a network device at the target time point by using the one or more target PUCCH resources.