UE Simultaneous Multi-RAT Measurement Without Gaps

Solution Overview

Problem

Current network deployment scenarios involving cells of different Radio Access Technologies (RATs) overlapping in frequency lack a means for User Equipment (UE) to perform measurements without requesting measurement gaps, leading to throughput loss and increased complexity.

Innovation Solution

A method for a UE to perform measurements on cells employing different RATs with the same or similar carrier frequencies simultaneously, using low-pass filtering and signaling capabilities to differentiate and shape signals, allowing intra-frequency and inter-RAT measurements without measurement gaps.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If measurement gaps are requested to perform measurements on cells with different RATs, then measurement capability is improved, but throughput is reduced and power consumption increases

Engineering Contradiction:

Improvemeasurement capabilityVSAvoidthroughput

Core Design Contradiction:

Measurement precisionVSProductivity

Solution Approach 1:

The patent enables continuous reception and measurement of signals from cells with different RATs without interrupting data transmission. The UE continuously monitors both E-UTRA and UTRA signals simultaneously, eliminating the need for measurement gaps while maintaining uninterrupted communication with the serving cell, thus preserving throughput while enabling inter-RAT measurements

Inventive Principle:

Principle #20Continuity of useful action

2Measurement precision

If measurement gaps are requested to perform measurements on cells with different RATs, then measurement capability is improved, but power consumption increases

Engineering Contradiction:

Improvemeasurement capabilityVSAvoidpower consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The patent enables continuous reception and measurement of signals from cells with different RATs without interrupting data transmission. The UE continuously monitors both E-UTRA and UTRA signals simultaneously, eliminating the need for measurement gaps while maintaining uninterrupted communication with the serving cell, thus preserving throughput while enabling inter-RAT measurements

Inventive Principle:

Principle #20Continuity of useful action

3Productivity

If simultaneous measurement of multiple RATs is performed, then measurement efficiency is improved, but device complexity increases

Engineering Contradiction:

Improvemeasurement efficiencyVSAvoiddevice complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent utilizes the UE's existing multi-RAT capability to perform measurements on both E-UTRA and UTRA cells simultaneously. The UE is configured to receive and measure signals from cells with different RATs using its inherent multi-functionality, allowing efficient inter-RAT measurements without requiring additional specialized hardware or complex measurement procedures

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS9848340B2Technique for performing cell measurement on at least two cells

Publication Date: 2017.12.19 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

AI summary

A technique for performing at least one measurement on at least a first cell and a second cell is disclosed. The first cell employs i) a first Radio Access Technology (RAT), different from a second RAT of the second cell, and ii) a first carrier substantially the same as a second carrier of the second cell. In a method aspect, the method is performed in a by a User Equipment (UE), and comprises the step of configuring the UE to perform the at least one measurement on the first and second cells substantially simultaneously with UE operations different from the at least one measurement.