Base Station Coordination Pattern Calculation

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Solution Overview

Problem

Current wireless communication systems face challenges in efficiently calculating and reducing the number of coordination patterns, leading to increased computational complexity as the number of base stations grows, which affects the throughput and resource allocation in coordinated communication.

Innovation Solution

A control device that calculates and selects coordination patterns based on pre-determined ratios of coordinated and uncoordinated transmission between base stations, reducing the need for extensive calculations by using uniform implementation ratios over time periods.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the number of base stations is increased to improve coverage and capacity, then the communication performance is enhanced, but the computational complexity for calculating coordination patterns increases significantly

Engineering Contradiction:
Improvecommunication capacityVSAvoidcomputational complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent segments the coordination pattern calculation by dividing all possible patterns into multiple groups based on the number of coordinated base stations. The control device selectively calculates patterns from different groups based on quality metrics, rather than calculating all patterns simultaneously. This segmentation reduces the computational burden while maintaining effective coordination among multiple base stations.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements partial calculation of coordination patterns by selectively computing patterns from specific groups based on quality information. Instead of calculating all possible coordination patterns (excessive action), the system calculates only the necessary subset that meets quality thresholds, achieving sufficient coordination performance with reduced computational effort.

Inventive Principle:
Principle #16Partial or excessive action

2Productivity

If all coordination patterns are calculated to ensure optimal resource allocation, then the throughput is maximized, but the processing time and computational load increase

Engineering Contradiction:
ImprovethroughputVSAvoidprocessing time
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The patent applies preliminary action by pre-dividing coordination patterns into groups based on the number of coordinated base stations before actual calculation. This pre-organization allows the system to quickly select and calculate only the relevant pattern groups based on current quality information, avoiding the need to calculate all patterns from scratch and significantly reducing processing time.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent implements dynamic selection of coordination pattern groups based on real-time quality information. The control device adjusts which pattern groups to calculate by evaluating quality metrics and selecting patterns that meet threshold requirements. This dynamic approach ensures optimal throughput is achieved while adapting computational effort to actual network conditions, avoiding unnecessary calculations.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS10021707B2Control device, control method, and base station
Publication Date: 2018.07.10 FUJITSU LTD
  • US10021707B2 patent drawing
  • US10021707B2 patent drawing
  • US10021707B2 patent drawing

AI summary

A control device including: a processor configured to: receive first and second quality information indicating qualities of wireless signals transmitted from a first and a second base stations, determine a first and a second ratios based on the first and the second quality information, the first ratio being a ratio with which the base stations perform a coordinated transmission, the second ratio being a ratio with which the first base station performs an uncoordinated transmission, and determine a coordination pattern based on the ratios, the coordination pattern indicating a first wireless resource and a second wireless resource in a specified wireless resource, the first and the second wireless resources being allocated to the coordinated transmission and the uncoordinated transmission, the coordinated pattern being applied to a specified period including a plurality of units of period each being a unit of period for wireless transmission in a wireless communication system.