Multiplexing Paging and Synchronization Signals in New Radio

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Solution Overview

Problem

In new radio (NR) systems, the inefficiency of beam sweeping for paging and synchronization signals leads to high resource overhead, reducing throughput, and multiplexing these signals using frequency division multiplexing (FDM) faces limitations due to bandwidth constraints and adverse effects on synchronization signal performance.

Innovation Solution

The method involves deciding whether to multiplex paging and synchronization signals based on the capabilities of the base station and user equipment, including bandwidth and beamforming capabilities, and performing frequency or time division multiplexing to optimize resource allocation and signal quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If beam sweeping is used for paging and synchronization signals, then coverage is improved, but resource overhead increases and throughput decreases

Engineering Contradiction:

ImprovecoverageVSAvoidthroughput

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent combines paging signals and synchronization signals into a single multiplexed signal structure, allowing both functions to be transmitted together in the same time-frequency resources, thereby reducing overall resource overhead while maintaining coverage through beam sweeping

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The multiplexed signal structure serves multiple functions simultaneously - it provides both synchronization information and paging information in a unified transmission framework, enabling the system to achieve coverage enhancement without proportionally increasing resource consumption

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Productivity

If frequency division multiplexing is used to multiplex paging and synchronization signals, then resource allocation is optimized, but bandwidth constraints and signal performance deteriorate

Engineering Contradiction:

Improveresource allocation efficiencyVSAvoidsynchronization signal performance

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent implements dynamic multiplexing where the base station decides whether to multiplex paging and synchronization signals based on real-time conditions including device capabilities, bandwidth availability, and signal quality requirements, allowing flexible adaptation between multiplexed and separate transmission modes

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes transmission parameters such as multiplexing mode, bandwidth allocation, and beamforming configuration based on device capabilities and network conditions, optimizing both resource efficiency and signal performance for different scenarios

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS11621873B2Multiplexing paging signals with synchronization signals in new radio

Publication Date: 2023.04.04 QUALCOMM INC

AI summary

Certain aspects of the present disclosure relate to methods and apparatus for multiplexing new radio (NR) synchronization signals and paging signals. A Base Station (BS) decides whether or not to multiplex paging and synchronization signals in a set of time resources, a set of frequency resources or a combination thereof, the deciding based on at least one of a capability of the BS, a capability of at least one User Equipment (UE) served by the BS, an operating frequency band or a combination of tone spacings of the paging signals and the synchronization signals.