Uplink Video Bit Rate Control Using Scheduling Method Signals

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Solution Overview

Problem

Existing cellular communication systems face challenges in effectively controlling video frame encoding bit rates due to dependency on base station availability and other UE usage, leading to potential data transmission delays and quality issues.

Innovation Solution

A communication apparatus that adjusts video frame encoding bit rates based on uplink scheduling methods, using dynamic or configured scheduling to optimize data transmission, thereby reducing the risk of data loss and quality degradation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a UE requests a gNB to control UL scheduling, then the gNB can adjust resource allocation, but the acceptance of the request depends on gNB usage status and other UE, leading to uncertain bit rate control

Engineering Contradiction:

Improvebit rate control adaptabilityVSAvoidbit rate control reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The terminal autonomously determines the video frame encoding bit rate based on uplink scheduling information without requiring gNB decision-making. The gNB only provides scheduling method indication, while the terminal independently calculates and applies the bit rate, making the system self-serving and eliminating dependency on gNB availability and other UE usage status.

Inventive Principle:

Principle #25Self-service

2Adaptability or versatility

If dynamic scheduling is used to allocate resources based on buffer status, then resource allocation flexibility improves, but transmission delays may occur due to base station availability and other UE usage

Engineering Contradiction:

Improveresource allocation flexibilityVSAvoidtransmission delay

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The terminal performs preliminary calculation of the video frame encoding bit rate based on received uplink scheduling information before actual video transmission. By pre-determining the bit rate according to the scheduling method indication and buffer status, the terminal avoids delays that would occur if bit rate decisions were postponed until gNB response.

Inventive Principle:

Principle #10Preliminary action

3Reliability

If configured scheduling is used to periodically allocate resources, then transmission predictability improves, but resource utilization efficiency may decrease

Engineering Contradiction:

Improvetransmission predictabilityVSAvoidresource utilization efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The terminal dynamically adjusts the video frame encoding bit rate parameter based on the indicated uplink scheduling method and current buffer status. When configured scheduling is used, the terminal calculates bit rate according to periodic allocation patterns; when dynamic scheduling is used, it adjusts based on real-time buffer status, thereby optimizing resource utilization efficiency while maintaining transmission predictability.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS20260059115A1Communication apparatus, control method, and storage medium

Publication Date: 2026.02.26 CANON KK

AI summary

A communication apparatus includes a reception unit configured to receive uplink scheduling information notifying an uplink scheduling method from a base station, a setting unit configured to set a bit rate of a plurality of video frames using information that is different depending on the uplink scheduling method, an encoding unit configured to encode the plurality of video frames at the set bit rate, and a transmission unit configured to transmit at least one video frame in the plurality of encoded video frames to the base station.