Coordinated Mode Selector for Base Station Transmission Timing

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Solution Overview

Problem

The existing CoMP technologies, such as JT and Blanking modes, face performance degradation due to variable X2 transmission times, leading to inefficient transmission and reception in LTE-A communication systems, as they either delay data transmission or result in resource underutilization.

Innovation Solution

A base station with a coordinated mode selector and controller that measures X2 transmission time and dynamically switches between JT and Blanking modes based on this measurement to optimize coordinated transmission, ensuring efficient data transfer and reception.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If coordinated transmission timing is set according to the longest X2 transmission time, then transmission reliability is improved, but transmission efficiency is degraded

Engineering Contradiction:
Improvetransmission reliabilityVSAvoidtransmission efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The patent applies dynamics by making the coordinated transmission timing adjustable rather than fixed. The timing is dynamically set based on the measured X2 transmission time plus a predetermined margin, allowing the system to adapt to varying network conditions. This resolves the contradiction by enabling the timing to be optimized for each specific situation rather than being conservatively set for the worst-case scenario only.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes the parameter of transmission timing from a fixed value (based on longest X2 transmission time) to a variable value (measured X2 transmission time plus margin). This parameter change allows the system to achieve both reliability (by accounting for actual transmission time) and efficiency (by avoiding excessive waiting time), directly resolving the technical contradiction.

Inventive Principle:
Principle #35Parameter changes

2Productivity

If coordinated transmission timing is set according to shorter than the longest X2 transmission time, then transmission efficiency is improved, but reception performance is degraded

Engineering Contradiction:
Improvetransmission efficiencyVSAvoidreception performance
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent applies preliminary action by measuring the X2 transmission time in advance and using this measured value to set the coordinated transmission timing. By performing the measurement beforehand and adding a predetermined margin, the system prepares the optimal timing in advance, avoiding both excessive delays and premature transmissions, thus resolving the contradiction between efficiency and reception performance.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent uses feedback by measuring the actual X2 transmission time and using this measured information to adjust the coordinated transmission timing. The measured timing is fed back into the system to determine the optimal transmission schedule, ensuring both efficiency and reception performance are optimized based on actual network conditions rather than worst-case assumptions.

Inventive Principle:
Principle #23Feedback

3Stability of the object's composition

If fixed coordinated transmission timing is used, then system stability is improved, but adaptability to network conditions is degraded

Engineering Contradiction:
Improvesystem stabilityVSAvoidadaptability to network conditions
Core Design Contradiction:
Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The patent applies dynamics by transforming the fixed coordinated transmission timing into a dynamic value that is calculated based on measured X2 transmission time. This allows the system to maintain stability through a systematic approach while adapting to varying network conditions, as the timing is recalculated based on actual measurements rather than being completely fixed or completely variable.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent applies universality by creating a timing mechanism that serves multiple functions: it provides stability through systematic calculation, adapts to network conditions through measurement-based adjustment, and works across different scenarios by using a standardized formula (measured time plus margin). This universal approach resolves the contradiction by making the system both stable and adaptable simultaneously.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS10212626B2Base station and coordinated transmission mode selection method
Publication Date: 2019.02.19 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
  • US10212626B2 patent drawing
  • US10212626B2 patent drawing
  • US10212626B2 patent drawing

AI summary

An optimal mode is selected in a coordinated transmission, depending on a situation of a network, and thus, it is possible to increase performance of a system. Coordinated mode selector (112) selects a JT mode in a case where X2 transmission time included in feedback information received from another base station is less than a second threshold, and selects a Blanking mode in a case where the X2 transmission time is greater than or equal to the second threshold. Base station to base station coordinating controller (113) performs base station to base station coordination control between another base station and a base station so as to perform a coordinated mode stored in memory unit (104) in a case where the coordinated transmission starts, and performs the base station to base station coordination control between another base station and the base station again so as to perform the coordinated mode newly selected in a case where the coordinated mode selected by coordinated mode selector (112) changes.