Scheduling Request Multiplexing for Latency and Reliability

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Solution Overview

Problem

Current wireless communication systems face challenges in efficiently multiplexing scheduling requests (SRs) based on reliability and latency objectives, which affects scheduling decisions and resource allocation.

Innovation Solution

The method involves configuring user equipment (UE) with multiple SR resources, allowing the UE to select an SR resource based on traffic parameters such as priority, latency, and reliability, and using these resources to send scheduling requests to the base station.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If multiple SR resources are configured for different traffic types, then scheduling decision accuracy is improved, but device complexity increases

Engineering Contradiction:

Improvescheduling decision accuracyVSAvoiddevice complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The SR resources are segmented into multiple distinct resources, each configured for specific traffic types or QoS requirements. The UE is configured with multiple PUCCH resources with different SR periods, allowing segmentation of SR transmissions based on traffic characteristics such as latency requirements and reliability objectives.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different SR resources are assigned with different local qualities or characteristics tailored to specific traffic types. For example, high-priority traffic with strict latency requirements is assigned to SR resources with shorter periods, while lower-priority traffic uses resources with longer periods, optimizing each resource's quality for its intended purpose.

Inventive Principle:

Principle #3Local quality

2Productivity

If SR resources are allocated based on traffic parameters, then resource allocation efficiency is improved, but signaling overhead increases

Engineering Contradiction:

Improveresource allocation efficiencyVSAvoidsignaling overhead

Core Design Contradiction:

ProductivityVSLoss of information

Solution Approach 1:

The base station performs preliminary action by configuring the UE with multiple SR resources and their associated parameters before the UE needs to send scheduling requests. This includes pre-configuring different SR periods, PUCCH resources, and their mapping to specific traffic types or logical channels, so that when SR transmission is needed, the UE can immediately select the appropriate resource without additional signaling.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system uses copying by creating multiple SR resource configurations that mirror the structure of different traffic types or QoS requirements. Each SR resource configuration is a copy or template that can be directly applied to matching traffic patterns, allowing efficient resource allocation without requiring complex real-time analysis or additional signaling overhead.

Inventive Principle:

Principle #26Copying

Data Source

PatentEP3610693B1Scheduling request multiplexing based on reliability and latency objectives

Publication Date: 2025.06.18 QUALCOMM INC

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AI summary

Certain aspects of the present disclosure relate to methods and apparatus for multiplexing scheduling requests (SRs), for example, using multiple SR resources to indicate different types of traffic (or traffic parameters).