SID Frame Duration Control for Silent-Period Uplink Grant Bypass

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Solution Overview

Problem

Existing communication technologies waste uplink air interface resources during silent periods in voice services due to inefficient handling of silence insertion descriptor (SID) frames, leading to suboptimal resource utilization and performance.

Innovation Solution

Adaptive learning of SID frame duration to determine silent periods and bypass uplink grant slots, reducing resource wastage by skipping unnecessary allocations during silent periods.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If uplink grant slots are continuously allocated during silent periods, then voice service continuity is maintained, but uplink air interface resources are wasted

Engineering Contradiction:

Improvevoice service continuityVSAvoiduplink air interface resource wastage

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The system dynamically adjusts uplink grant allocation based on detected voice activity states. During talk spurt periods, grants are allocated continuously; during silent periods, grant allocation is suspended or reduced. This dynamic adaptation resolves the contradiction by making resource allocation flexible rather than static, maintaining service continuity when needed while avoiding waste during silence.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes the parameter of uplink grant allocation frequency based on voice activity detection. When silence is detected (after N consecutive slots without voice packets), the system changes the allocation parameter from continuous to intermittent or suspended, thereby reducing resource wastage while maintaining the ability to resume service when voice activity returns.

Inventive Principle:

Principle #35Parameter changes

2Measurement precision

If SID frames are transmitted frequently, then silent period detection accuracy is improved, but power consumption increases

Engineering Contradiction:

Improvesilent period detection accuracyVSAvoiddevice power consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

Instead of continuous SID frame transmission, the system employs periodic transmission at optimized intervals during silent periods. The SID frame duration is configured to balance detection accuracy with power savings, transmitting frames only at necessary intervals rather than continuously, thus reducing energy consumption while maintaining adequate silent period detection capability.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The system uses the SID frames themselves as both the measurement tool and the service data. By repurposing the periodic SID frames (which must be transmitted anyway for comfort noise generation) to carry voice activity detection information, the system achieves dual functionality without additional power expenditure dedicated solely to detection.

Inventive Principle:

Principle #25Self-service

3Ease of operation

If uplink grants are allocated during silent periods, then resource allocation simplicity is maintained, but network efficiency decreases

Engineering Contradiction:

Improveresource allocation simplicityVSAvoidnetwork efficiency

Core Design Contradiction:

Ease of operationVSProductivity

Solution Approach 1:

The system performs preliminary voice activity detection and silent period identification before finalizing uplink grant allocation decisions. By detecting N consecutive slots without voice packets in advance, the system can proactively suspend or adjust grant allocation, preventing resource wastage before it occurs while maintaining a relatively simple overall allocation framework.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements feedback mechanisms where SID frames and uplink packet observations are used to inform subsequent grant allocation decisions. The network monitors voice activity patterns and adjusts grant allocation accordingly, creating a closed-loop system that improves network efficiency while maintaining operational simplicity through automated decision-making based on observed conditions.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS20250358796A1Adaptive learning of silence insertion descriptor frame duration to enhance uplink resource usage

Publication Date: 2025.11.20 DELL PROD LP

AI summary

SID frame duration during communication session between device and base station can be determined and bypassing of certain uplink grants of the session can be controlled. Uplink communication manager (UCM) can determine when session is in silent period based on a silent period detection threshold value, and determine SID frame duration of session based on determination of a number of consecutive slots without uplink voice-related data packet or SID frame being received from the device during silent period. UCM can determine number of slots to bypass for periodic uplink grants, or number of configured slots to bypass for configured grant, during portion of silent period, based on SID frame duration, silent period detection threshold value, and periodic uplink grant period or configured grant periodicity. During silent period, UCM can control bypassing of periodic uplink grants for the number of slots or the number of configured grant slots.