eNodeB Priority Indicator for Unlicensed Band Interference Management

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Solution Overview

Problem

In wireless communication systems, managing communication resources between licensed and unlicensed frequency bands is challenging, particularly in scenarios where interference needs to be minimized, and priority communications must be ensured without disrupting existing transmissions in unlicensed bands.

Innovation Solution

An eNodeB transmits a high priority indicator in the licensed frequency band to prevent other eNodeBs from transmitting in the unlicensed band, allowing the transmitting eNodeB to reserve the unlicensed band for high priority communications once it is determined to be clear.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If eNodeBs transmit signals in unlicensed frequency band simultaneously, then communication productivity is improved, but interference between transmissions increases

Engineering Contradiction:

Improvecommunication productivityVSAvoidinterference

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent applies preliminary action by having eNodeBs transmit priority indicators before actual data transmission in the unlicensed band. This allows other eNodeBs to prepare for potential interference by receiving advance notification of high-priority transmission intentions, enabling them to adjust their transmission schedules accordingly and avoid conflicts.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent uses the licensed frequency band as an intermediary medium to communicate priority information between eNodeBs. Instead of direct coordination in the unlicensed band, the system uses the licensed band (which has different access requirements) as a mediator to exchange priority indicator information, thereby managing interference without requiring continuous licensed band occupancy.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If eNodeBs continuously monitor unlicensed band for transmissions, then interference management is improved, but energy consumption increases

Engineering Contradiction:

Improveinterference managementVSAvoidenergy consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent implements periodic action by having eNodeBs transmit priority indicators at specific intervals or trigger points rather than continuously monitoring. The monitoring and indicator transmission occur periodically based on transmission opportunities or scheduled events, reducing energy consumption while maintaining effective interference management through timely priority notifications.

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS11950276B2Transmission of priority indicator between ENBS in a licensed frequency band to manage communication resources in an unlicensed frequency band

Publication Date: 2024.04.02 KYOCERA CORP

AI summary

An eNodeB transmits a high priority indicator within a licensed frequency band. In response to receiving the high priority indicator, other eNodeBs refrain from transmitting signals within an unlicensed frequency band. After determining that no other eNodeBs are transmitting signals within the unlicensed frequency band, the eNodeB transmitting the high priority indicator transmits signals to a user equipment (UE) device.