Scheduling Request Transmission Control for Beam Failure Recovery

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Solution Overview

Problem

In high band communications systems, the frequent transmission of scheduling requests for beam failure recovery leads to high resource overheads and increased power consumption, as existing mechanisms do not effectively manage the periodic transmission of scheduling requests.

Innovation Solution

Implement a method where scheduling requests are transmitted only when a first trigger condition is met, and the transmission is canceled or skipped for a specified number of times (N) when a second trigger condition is met, reducing unnecessary resource usage and power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the terminal periodically transmits scheduling requests to trigger uplink grant resources for beam failure recovery, then the beam failure recovery function is achieved, but the resource overheads and power consumption increase

Engineering Contradiction:

Improvebeam failure recoveryVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The patent applies periodic action by implementing a mechanism where scheduling requests are transmitted periodically only when beam failure is detected, rather than continuous transmission. The terminal sends scheduling requests at periodic intervals triggered by beam failure detection, and stops transmission when recovery is achieved or maximum attempts are reached, thereby reducing unnecessary power consumption while maintaining recovery functionality

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The patent applies preliminary action by having the terminal detect beam failure and trigger scheduling request transmission in advance before actual data transmission is needed. The terminal proactively identifies beam failure through reference signal quality monitoring and initiates the scheduling request process beforehand, ensuring uplink resources are secured timely without requiring continuous monitoring and transmission

Inventive Principle:

Principle #10Preliminary action

2Reliability

Engineering Contradiction:

Improvebeam failure recoveryVSAvoidresource overheads

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The patent reduces resource overheads by implementing periodic scheduling request transmission only when beam failure is detected, rather than continuous periodic transmission. The terminal transmits scheduling requests at controlled intervals triggered by beam failure events, and ceases transmission when recovery is detected or maximum attempt limits are reached, thereby minimizing unnecessary uplink resource consumption

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The patent reduces resource overheads by applying preliminary action through proactive beam failure detection and triggering. The terminal monitors reference signal quality and initiates scheduling request transmission only when beam failure is detected, securing uplink resources in advance before data transmission is needed, thereby avoiding continuous resource allocation and reducing overall resource overheads

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS11909490B2Scheduling request transmitting method, scheduling request receiving method, terminal, and network device

Publication Date: 2024.02.20 VIVO MOBILE COMM CO LTD

AI summary

Embodiments of this disclosure provide a scheduling request transmitting method, a scheduling request receiving method, a terminal, and a network device. The scheduling request transmitting method includes: in a case that a first trigger condition is met, transmit a scheduling request SR to a network device; and in a case that a second trigger condition is met, cancel transmission of the SR, or skip transmission of the SR for N times, where N is an integer greater than 1.