Relay Terminal Buffer Status Pre-Reporting for Uplink Scheduling

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Solution Overview

Problem

Long latency in buffer status reporting by relay terminal devices leads to data transmission delays and reduced efficiency in sidelink communication systems.

Innovation Solution

A buffer status reporting method where the relay terminal device pre-reports data information to the network device, allowing for pre-allocation of uplink resources, thereby reducing reporting delays and improving transmission efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If the relay terminal device waits for data buffering to be completed before reporting buffer status, then the reporting is accurate and complete, but the reporting delay increases and transmission efficiency decreases

Engineering Contradiction:

Improvebuffer status reporting accuracyVSAvoidbuffer status reporting delay

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The relay terminal device performs preliminary actions by reporting buffer status information before the data buffering is completely finished. The network device is notified in advance about the upcoming data arrival, allowing it to prepare resource allocation proactively rather than waiting for complete buffering before reporting.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The buffer status reporting is segmented into multiple stages: preliminary reporting when data is about to be buffered, and supplementary reporting after buffering is complete. This segmentation allows the system to capture both the timing benefit of early reporting and the accuracy benefit of complete information.

Inventive Principle:

Principle #1Segmentation

2Loss of information

If the relay terminal device reports buffer status after data buffering is completed, then all data information is available for reporting, but the uplink resource allocation is delayed

Engineering Contradiction:

Improvedata information completenessVSAvoiddata transmission efficiency

Core Design Contradiction:

Loss of informationVSProductivity

Solution Approach 1:

The network device performs preliminary resource allocation based on preliminary buffer status reporting before the complete data arrives. This preliminary resource preparation eliminates the waiting time that would otherwise occur after complete buffering, thereby improving transmission efficiency without sacrificing information completeness.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements a feedback mechanism where the relay terminal device sends supplementary buffer status reporting after data buffering is complete, allowing the network device to refine or adjust the preliminary resource allocation based on the complete data information, thus ensuring both efficiency and accuracy.

Inventive Principle:

Principle #23Feedback

Data Source

PatentEP4099754B1Cache state reporting method, relay terminal device, and computer-readable storage medium

Publication Date: 2025.11.05 VIVO MOBILE COMM CO LTD

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AI summary

Embodiments of the present invention disclose a buffer status reporting method, a relay terminal device, and a computer-readable storage medium. The buffer status reporting method includes: determining data information of to-be-transmitted data, where the to-be-transmitted data is data which is about to be sent by a remote terminal device to a network device through a relay terminal device; generating a target buffer status report based on the data information, where the target buffer status report is a to-be-sent buffer status report; and reporting the target buffer status report to the network device.