Radio Frame Estimation Using Key Frames for Channel Use Rate

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Solution Overview

Problem

Existing radio communication systems face challenges in accurately calculating the channel use rate due to difficulties in acquiring all radio frames, which affects the calculation accuracy and leads to incomplete estimation of radio parameters.

Innovation Solution

An estimation apparatus and method that acquire radio frames, specify key frames based on time information, calculate the sum of time lengths between adjacent key frames, and estimate the number of unacquired radio frames to improve calculation accuracy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If all radio frames are acquired for calculation, then calculation accuracy is improved, but device complexity and difficulty of detection increase

Engineering Contradiction:
Improvechannel use rate calculation accuracyVSAvoiddifficulty of acquiring all radio frames
Core Design Contradiction:
Measurement precisionVSDifficulty of detecting and measuring

Solution Approach 1:

The patent introduces key frames as intermediary elements to bridge the gap between acquired and unacquired radio frames. By selecting key frames that provide representative information about the radio channel state, the system can estimate channel use rate without needing to acquire every single radio frame, thus resolving the contradiction between measurement precision and detection difficulty

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent creates a simplified representation (copy) of the complete radio frame sequence by using key frames. These key frames contain sufficient information to reconstruct or estimate the channel use rate characteristics, allowing accurate measurement without capturing all original radio frames, thereby reducing detection difficulty while maintaining precision

Inventive Principle:
Principle #26Copying

2Ease of operation

If radio frames that fail to be acquired are excluded from calculation, then ease of operation is improved, but measurement precision deteriorates

Engineering Contradiction:
Improveease of calculating channel use rateVSAvoidchannel use rate calculation accuracy
Core Design Contradiction:
Ease of operationVSMeasurement precision

Solution Approach 1:

The patent implements feedback mechanisms to account for unacquired radio frames. By using key frames to infer information about missing frames, the system adjusts calculations to include estimates of unacquired frames, thereby maintaining measurement precision while still using only the readily available acquired frames for the actual calculation process

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent performs preliminary identification and classification of radio frames into key frames and non-key frames before calculation. This preliminary action allows the system to prepare and organize the data structure in advance, making the calculation process easier to operate while ensuring that unacquired frames are properly accounted for through the key frame representations

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS11558154B2Estimation apparatus, estimation method, and non-transitory computer-readable recording medium
Publication Date: 2023.01.17 NEC CORP
  • US11558154B2 patent drawing
  • US11558154B2 patent drawing
  • US11558154B2 patent drawing

AI summary

In order to appropriately estimate the number of radio frames that fail to be acquired, an estimation apparatus 200 includes: a memory storing instructions; and one or more processors configured to execute the instructions to: acquire a plurality of radio frames transmitted and received through a radio channel; specify key frames, based on time information of the plurality of acquired radio frames; calculate a sum of time lengths of at least a part of the plurality of radio frames being located between two adjacent ones of the key frames; and estimate a number of unacquired radio frames, based on the specified key frames and the calculated sum, the unacquired radio frames being radio frames failing to be acquired.