Multi-Beam Scheduling Request Configuration in 5G NR

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Solution Overview

Problem

The next-generation 5G radio access network (NR) lacks defined methods for multi-beam-based scheduling requests, which are essential for efficient uplink operations, particularly in scenarios requiring flexible frame structures and improved data transmission rates.

Innovation Solution

A method for performing scheduling requests in NR involves transmitting and receiving scheduling request configuration information to and from user equipment (UE) using multiple scheduling request resources, allowing for stable and efficient multi-beam-based uplink operations by allocating and transmitting scheduling requests across multiple beams.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If multi-beam-based MIMO transmission technique is applied in uplink, then data transmission rate is improved, but scheduling request operations are undefined resulting in operational complexity

Engineering Contradiction:

Improvedata transmission rateVSAvoidscheduling request operations

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

The scheduling request procedure is segmented into distinct phases: configuration phase where the base station provides multiple scheduling request resources to the UE, and execution phase where the UE transmits scheduling requests using selected beams. This segmentation resolves the operational complexity by providing clear, step-by-step procedures for multi-beam scheduling requests.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The base station performs preliminary configuration by allocating multiple scheduling request resources and providing beam information to the UE before actual data transmission. This preliminary action establishes the framework for efficient multi-beam operations, eliminating the need for ad-hoc scheduling decisions during data transmission.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If multiple scheduling request resources are allocated, then beam diversity and signal reception are improved, but device complexity increases

Engineering Contradiction:

Improvesignal receptionVSAvoidscheduling request configuration

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

Multiple scheduling request resources are designed to serve multiple functions: they provide beam diversity for improved signal reception, enable load balancing across different beams, and support both initial access and retransmission scenarios. This multi-functionality justifies the increased configuration complexity by delivering comprehensive operational benefits.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system incorporates feedback mechanisms where the base station monitors scheduling requests received on different beams and provides acknowledgments or retransmission grants. This feedback loop enables dynamic optimization of beam selection and resource allocation, improving signal reception reliability while managing device complexity through adaptive rather than static configuration.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS20250024481A1Method and device for executing multi-beam-based scheduling request in wireless communication

Publication Date: 2025.01.16 KT CORP

AI summary

Provided are a method and a device for a terminal executing a scheduling request in wireless communication. The method may include: receiving, from a base station, scheduling request configuration information for configuring a scheduling request using a multi-scheduling request resource; allocating the multi-scheduling request resource according to the scheduling request configuration information; and transmitting, to the base station, a multi-scheduling request using the multi-scheduling request resource.