Radio Base Station State Control Coordination via OMC Feedback

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

In radio communication systems, autonomous transmission power control by individual radio base stations can lead to inefficient optimization of radio parameters in neighboring stations, resulting in delayed convergence and inappropriate parameter settings, which may cause interference and unnecessary measurements by mobile terminals.

Innovation Solution

A radio communication system with a control station that coordinates state control information among radio base stations, allowing a first radio base station to notify the control station and other base stations of its transmission state change, enabling efficient updating of radio parameters in neighboring stations to optimal values.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If each radio base station autonomously controls transmission power based on local traffic status, then power saving is achieved, but radio parameters in neighboring stations are not efficiently optimized

Engineering Contradiction:

Improvepower savingVSAvoidradio parameter optimization efficiency

Core Design Contradiction:

Loss of energyVSProductivity

Solution Approach 1:

The patent implements a feedback mechanism where the control station receives state control information from the first radio base station about its transmission state change, and feeds back management information to neighboring base stations about which radio parameters need updating. This feedback loop enables coordinated optimization across the network while maintaining autonomous power control at each base station.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The control station acts as an intermediary between radio base stations. It collects state control information from base stations and distributes management information to neighboring base stations, facilitating coordinated parameter optimization without requiring direct base station-to-base station communication for this purpose.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If transmission power control is performed autonomously by each base station, then flexible adaptation to traffic states is achieved, but convergence of radio parameters is delayed

Engineering Contradiction:

Improveflexible adaptation to traffic statesVSAvoidconvergence time of radio parameters

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The control station notifies neighboring base stations in advance about state control actions taken by the first base station, and provides management information about which parameters need updating. This preliminary notification allows neighboring base stations to proactively adjust their parameters before full convergence is needed, reducing the overall convergence time.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system uses feedback from the control station to coordinate parameter updates across multiple base stations. The control station receives state control information and feeds back management information, enabling synchronized parameter optimization that accelerates convergence while preserving autonomous adaptation capabilities.

Inventive Principle:

Principle #23Feedback

3Extent of automation

If radio parameters are not efficiently optimized in neighboring stations, then autonomous control is maintained, but interference and unnecessary measurements occur

Engineering Contradiction:

Improveautonomous controlVSAvoidinterference and unnecessary measurements

Core Design Contradiction:

Extent of automationVSObject-affected harmful factors

Solution Approach 1:

The control station serves as an intermediary that coordinates between autonomous base stations and the network. It receives state control information from base stations and distributes management information to prevent interference, enabling autonomous control to proceed while mitigating harmful effects through coordinated communication.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The feedback mechanism from the control station provides neighboring base stations with information about state control actions and required parameter updates. This feedback enables autonomous base stations to adjust their operations to avoid interference and unnecessary measurements while maintaining their autonomous control capability.

Inventive Principle:

Principle #23Feedback

Data Source

PatentEP2408227B1Wireless communication system, method, wireless base station, and control station

Publication Date: 2021.04.28 NEC CORP

Figure 1
Figure 2
Figure 3A~3B

AI summary

A radio communication system, a radio communication method, a radio base station and a control station in which, even when a radio base station performs state control, radio parameters in neighboring base stations may efficiently and appropriately be self-optimized, are disclosed. The radio communication system includes a plurality of radio base stations (eNB1, eNB2 and eNB3) and a control station (O&M (OMC)) connected to the radio base stations. One of the radio base stations notifies state control information including information regarding the state control to the control station before or after execution of state control in the one radio base station. The control station notifies at least one of management information regarding the radio parameter updated in accordance with the state control and the state control information to the radio base stations connected to the control station, with the exclusion of the one radio base station that notified the state control information (Fig.1).