Cell Sector Throughput Estimation for Cell Edge and Carrier Aggregation
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Solution Overview
Problem
Existing cellular network performance management systems fail to accurately measure user throughput, especially at cell edges, and do not account for bursty traffic or carrier aggregation scenarios, leading to pessimistic throughput values and inadequate network optimization.
Innovation Solution
A method and system that estimate physical resource blocks (PRBs) available for users, calculate data throughput per PRB, and generate user throughput data by summing across frequencies, using CQI and MIMO utilization, with supervised and unsupervised learning to predict future network performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If standard performance management systems are used to measure user throughput, then average performance can be reported, but accurate user throughput measurement especially at cell edges cannot be achieved
Solution Approach 1:
The patent segments the cell into multiple parts (close to antenna, mid-cell, cell edge) and measures throughput separately for each segment. This allows accurate measurement of user throughput in different parts of the cell, particularly at the cell edge where standard systems fail, without requiring a completely new complex system.
Solution Approach 2:
The patent introduces an intermediary calculation method that uses available PRB information, CQI measurements, and MIMO utilization data to estimate throughput per PRB. This intermediary approach bridges the gap between available network measurements and accurate user throughput determination, especially for cell edge users.
2Measurement precision
If existing performance management systems are used, then throughput counters can be collected, but accurate throughput information in carrier aggregation scenarios cannot be obtained
Solution Approach 1:
The patent segments the carrier aggregation measurement by determining whether traffic originates from primary or secondary cells. This segmentation allows accurate attribution of throughput to the correct cell, resolving the difficulty of measuring throughput in carrier aggregation scenarios where standard systems cannot distinguish traffic origin.
3Measurement precision
If standard throughput measurements are used, then overall cell performance can be monitored, but cell edge performance where target requirements are most challenged cannot be observed
Solution Approach 1:
The patent applies local quality by making different parts of the cell (close to antenna, mid-cell, cell edge) have different measurement characteristics. Each part is measured with appropriate parameters and methods suited to its specific conditions, enabling accurate cell edge throughput measurement without overly complicating the entire system.
4Measurement precision
If average performance reporting is used, then simple monitoring is possible, but accurate user experience analysis in different parts of the cell cannot be performed
Solution Approach 1:
The patent segments user experience analysis by location (close to antenna, mid-cell, cell edge) and provides separate throughput measurements for each segment. This enables accurate user experience analysis in different parts of the cell while maintaining manageable system complexity through structured segmentation.
Data Source
AI summary
The present invention relates to a system and method for determining user throughput in a cell sector of a cellular network. The method includes estimating a number of physical resource blocks (PRBs) available for a user in the cell sector at a given frequency, estimating data throughput per PRB in the cell sector at the given frequency, wherein data throughput per PRB in the cell sector includes a plurality of PRB values across a plurality of parts of the cell sector respectively, estimating a product of the number of PRBs and data throughput per PRB in the cell sector at the given frequency, to generate user throughput data at the given frequency in the plurality of parts of the cell sector, and summing a plurality of user throughput data computed at corresponding plurality of frequencies to generate an overall user throughput in the plurality of parts of the cell sector.