IAB Node eLCID-Aware Suppression of BSR Padding Transmissions

Solution Overview

Problem

Existing wireless communication systems face challenges in efficiently providing seamless services due to the complexities of 5G technologies, especially in managing radio link control channels and logical channel identifiers, which can lead to inefficiencies and increased battery consumption in devices like smartphones and IoT devices.

Innovation Solution

The implementation of an integrated access backhaul (IAB) node that manages uplink grants and radio link control channels by identifying the use of extended logical channel identifiers (eLCIDs) to optimize the transmission of buffer status reports (BSRs) and padding, thereby enhancing service efficiency and reducing battery consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional BSR transmission methods are used in 5G networks with extended logical channel identifiers, then service coverage and functionality are improved, but battery consumption increases and transmission efficiency decreases

Engineering Contradiction:

Improveservice coverageVSAvoidbattery consumption

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The patent extracts and eliminates redundant padding transmissions from the BSR process. By identifying that padding BSRs and padding data are unnecessary when eLCIDs are configured, the system removes these redundant elements, thereby reducing battery consumption without affecting service coverage.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent changes the transmission parameter by conditionally suppressing BSR and padding transmissions based on the presence of eLCID configuration. When eLCID is configured, the system transitions from transmitting all BSRs to selectively transmitting only necessary BSRs, optimizing energy usage while maintaining service functionality.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If traditional BSR transmission methods are used in 5G networks with extended logical channel identifiers, then service coverage and functionality are improved, but transmission efficiency decreases

Engineering Contradiction:

Improveservice coverageVSAvoidtransmission efficiency

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The patent extracts and eliminates redundant padding transmissions from the BSR process. By identifying that padding BSRs and padding data are unnecessary when eLCIDs are configured, the system removes these redundant elements, thereby reducing battery consumption without affecting service coverage.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent changes the transmission parameter by conditionally suppressing BSR and padding transmissions based on the presence of eLCID configuration. When eLCID is configured, the system transitions from transmitting all BSRs to selectively transmitting only necessary BSRs, optimizing energy usage while maintaining service functionality.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If comprehensive BSR and padding transmissions are performed, then reliability of service delivery is improved, but battery consumption and resource usage increase

Engineering Contradiction:

Improveservice delivery reliabilityVSAvoidbattery drain

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The patent implements a feedback mechanism where the system checks whether eLCID is configured before determining BSR transmission behavior. This feedback loop ensures that transmissions are optimized based on actual service requirements, maintaining reliability by transmitting BSRs when necessary while avoiding redundant transmissions that waste energy.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent changes the transmission parameter by conditionally suppressing BSR and padding transmissions based on the presence of eLCID configuration. When eLCID is configured, the system transitions from transmitting all BSRs to selectively transmitting only necessary BSRs, optimizing energy usage while maintaining service functionality.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12382465B2Method and apparatus for providing service in wireless communication system

Publication Date: 2025.08.05 SAMSUNG ELECTRONICS CO LTD

AI summary

A method performed by an integrated access backhaul (IAB) node in a wireless communication system is provided. The method comprises: receiving, from a base station, configuration information regarding an uplink (UL) grant, receiving, from the base station, configuration information regarding backhaul (BH) radio link control (RLC) channel via higher layer signaling, identifying, based on the configuration information regarding BH RLC channel, whether an extended logical channel identifier (eLCID) is used, in case that the eLCID is not used and a UL grant size is equal to or larger than a first size, not transmitting only a padding buffer status report (BSR) or not transmitting only padding or not transmitting only the padding BSR and the padding, and in case that the eLCID is used and the UL grant size is equal to or larger than a second size, not transmitting only the padding BSR or not transmitting only the padding or not transmitting only the padding BSR and the padding.