Buffer State Reporting for Latency-Aware Data Burst Alignment

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Solution Overview

Problem

Existing XR systems face challenges in maintaining quality of service (QoS) and power efficiency due to limited control over wireless communication durations, leading to latency issues and data discard, especially in devices like portable user equipment (UE), which lack sufficient latency information for effective scheduling.

Innovation Solution

Implementing buffer state reporting and latency-aware scheduling to determine the remaining time for data packets in a buffer, allowing network devices to schedule transmissions effectively while managing power usage, by using wireless communication interfaces and processors to transmit latency-related signals.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If wireless communications are controlled or limited in duration for power saving, then power consumption is reduced, but quality of service (latency) deteriorates

Engineering Contradiction:

Improvepower consumptionVSAvoidquality of service

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The UE provides buffer state information with latency indicators to the network device, creating a feedback loop that enables the network to adjust scheduling decisions based on real-time buffer conditions and latency requirements, thereby resolving the contradiction between power saving and QoS

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The UE proactively reports buffer state information before data packets are discarded due to latency violations, allowing the network to take preliminary scheduling actions that prevent QoS degradation while maintaining power efficiency

Inventive Principle:

Principle #10Preliminary action

2Loss of time

If data is transmitted according to periodic schedule, then data delivery timing is improved, but data is discarded after usefulness expires

Engineering Contradiction:

Improvedata delivery timingVSAvoiddata utility

Core Design Contradiction:

Loss of timeVSLoss of substance

Solution Approach 1:

The system transitions from static periodic scheduling to dynamic scheduling based on real-time buffer state reporting with latency indicators, allowing the network to adapt transmission timing to actual data freshness requirements and prevent transmission of expired data

Inventive Principle:

Principle #15Dynamics

3Device complexity

If network devices provide timing instructions without latency information, then scheduling control is simplified, but QoS factors are not considered

Engineering Contradiction:

Improvescheduling controlVSAvoidQoS consideration

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The UE includes latency indicators in buffer state reports, providing the network device with QoS-relevant information that enables latency-aware scheduling decisions without significantly increasing system complexity

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The buffer state information with latency indicators acts as an intermediary that bridges the UE and network device, conveying QoS requirements in a format that maintains scheduling control simplicity while enabling QoS consideration

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS20260005972A1Systems and methods for buffer state reporting and data burst alignment

Publication Date: 2026.01.01 META PLATFORMS TECHNOLOGIES LLC

AI summary

Disclosed herein are aspects related to a device that can include a wireless communication interface and one or more processors. The one or more processors can generate a plurality of data packets. The one or more processors can allocate the plurality of data packets to a buffer for transmission to a network device. The one or more processors can determine an indication of a remaining time for transmission of at least one data packet of the plurality of data packets. The one or more processors can cause transmission, using the wireless communications interface, of the indication of the remaining time to the network device.