Terminal Device Scheduling Request Cancellation via PDCCH Indication

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Solution Overview

Problem

Existing communication systems lack an effective method for processing scheduling requests (SRs) in terminal devices when receiving a physical downlink control channel (PDCCH) monitoring adaptive indication from a network device, particularly in cases where the SR is pending.

Innovation Solution

The method involves a terminal device receiving a PDCCH monitoring adaptive indication from a network device and canceling a pending SR if the indication carries specific first indication information, such as information indicating PDCCH skipping or switching to an empty search space group.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the terminal device continuously monitors PDCCH for scheduling requests, then the reliability of SR processing is improved, but the energy consumption and processing time increase

Engineering Contradiction:

ImproveSR processing reliabilityVSAvoidterminal device energy consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent applies dynamics by making the PDCCH monitoring behavior adaptive rather than static. The terminal device dynamically adjusts its monitoring behavior based on the PDCCH monitoring adaptive indication received from the network device, switching between monitoring and non-monitoring states as needed, thereby optimizing the balance between reliability and energy consumption.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the monitoring parameter state based on the PDCCH monitoring adaptive indication. When the indication carries first indication information, the terminal device changes its monitoring parameter to non-monitoring state, canceling pending SRs. This parameter change allows the system to reduce energy consumption while maintaining reliability through network-coordinated resource allocation.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If the terminal device waits for PDCCH response for pending SRs, then the SR processing completeness is improved, but the time delay increases

Engineering Contradiction:

ImproveSR processing completenessVSAvoidSR processing time delay

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent applies preliminary action by having the network device send the PDCCH monitoring adaptive indication in advance before the terminal device completes its SR waiting process. This allows the terminal device to proactively cancel pending SRs based on advance information, reducing time delay while maintaining processing completeness through the network's coordinated scheduling.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements feedback mechanism where the network device provides feedback information (PDCCH monitoring adaptive indication) to the terminal device about the scheduling status. This feedback loop allows the terminal device to update its SR processing state accordingly, balancing time delay reduction with processing completeness through continuous network-termin al coordination.

Inventive Principle:

Principle #23Feedback

3Productivity

If the terminal device cancels pending SRs upon receiving PDCCH monitoring adaptive indication, then the processing efficiency is improved, but the risk of missed scheduling opportunities increases

Engineering Contradiction:

ImproveSR processing efficiencyVSAvoidscheduling opportunity reliability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent uses feedback mechanism where the PDCCH monitoring adaptive indication serves as reliable feedback from the network device about actual scheduling opportunities. This feedback ensures that when the terminal device cancels pending SRs based on this indication, it does so with confidence that scheduling opportunities have been properly assessed by the network, thus maintaining reliability while improving efficiency.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent applies universality by making the PDCCH monitoring adaptive indication serve multiple functions: it indicates PDCCH monitoring status, provides scheduling opportunity information, and triggers SR cancellation decisions. This multi-functional indication mechanism ensures that SR processing efficiency improvement does not compromise reliability, as the same signal that enables efficiency also guarantees scheduling opportunity awareness.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250151057A1Scheduling request process processing method and apparatus, device, and storage medium

Publication Date: 2025.05.08 BEIJING XIAOMI MOBILE SOFTWARE CO LTD

AI summary

A method, an apparatus, a device, and a storage medium for a scheduling request (SR) process processing are provided. The method includes: receiving a PDCCH monitoring adaptive indication sent by a network device; and canceling a pending SR in a case that there is a pending of the SR and the received PDCCH monitoring adaptive indication carries first indication information. Solutions are provided for how the SR process should be processed after a terminal device receives the PDCCH monitoring adaptive indication sent by the network device.