Pilot Signal Grouping for Multi-Carrier Network Resource Optimization

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Solution Overview

Problem

In multi-carrier communication systems, existing technologies face challenges in efficiently managing and reporting pilot signals due to the large number of pilot signals, leading to excessive network resource usage and inefficient set management.

Innovation Solution

The method involves grouping pilot signals based on their coverage areas and assigning a group identifier, allowing access terminals to report the strength of representative pilot signals instead of individual pilot signals, thereby reducing the number of reports and optimizing network resource usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If individual pilot signals are reported separately, then measurement precision is improved, but network resource usage increases and device complexity increases

Engineering Contradiction:

Improvepilot signal strength reporting accuracyVSAvoidnetwork resource usage

Core Design Contradiction:

Measurement precisionVSLoss of energy

Solution Approach 1:

The patent merges multiple pilot signals into a single composite pilot signal by combining their strength values. Access terminals report the composite pilot signal strength instead of individual pilot signal strengths, thereby reducing the number of reports while maintaining adequate measurement information for network decisions.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The composite pilot signal serves multiple functions: it represents multiple individual pilot signals simultaneously, enables single-report feedback from access terminals, and provides sufficient information for base station decisions regarding access terminal positioning and resource allocation.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Measurement precision

If individual pilot signals are reported separately, then measurement precision is improved, but device complexity increases

Engineering Contradiction:

Improvepilot signal strength reporting accuracyVSAvoidset management complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent extracts only the essential information (composite pilot signal strength) needed for network decisions, eliminating the need to process and report individual pilot signal strengths. This reduces the data processing burden on access terminals and simplifies set management.

Inventive Principle:

Principle #2Taking out (Extraction)

3Loss of energy

If composite pilot signals are used, then network resource usage is reduced, but measurement precision deteriorates

Engineering Contradiction:

Improvenetwork resource usageVSAvoidpilot signal strength reporting accuracy

Core Design Contradiction:

Loss of energyVSMeasurement precision

Solution Approach 1:

The patent changes the parameter representation from individual pilot signal strengths to a composite parameter that aggregates multiple pilot signal strengths. This transformation maintains sufficient measurement information while reducing the quantity of data to be reported and processed.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentEP2247053B1Communications system with traffic channel assignment

Publication Date: 2012.05.09 QUALCOMM INC

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AI summary

Embodiments disclosed herein relate to a method and apparatus for grouping a plurality of pilot signals into one or more pilot groups, each pilot group being identified by a plurality of parameters; and selecting a representative pilot signal from each pilot group for pilot strength reporting.