Integrated Synchronization Signals for Low-Power 5G Receivers
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing synchronization signals to support both standard and low-power devices, particularly in 5G/NR communication systems, where high-frequency bands and diverse applications require robust coverage and mobility support.
Innovation Solution
The integration of synchronization signals using a combination of on-off keying (OOK) and orthogonal frequency division multiplexing (OFDM) waveforms, where OOK is multiplexed within OFDM symbols to create an integrated synchronization signal that can be received by both main and low-power receivers, enhancing energy efficiency and compatibility across devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate synchronization signals are used for standard and low-power devices, then each device type can be optimized for its specific requirements, but the system complexity increases and resource utilization becomes inefficient
Solution Approach 1:
The patent combines separate synchronization signals into a single integrated synchronization signal that contains both standard and low-power device signals. The low-power synchronization signal is multiplexed with the standard synchronization signal, allowing both device types to access their required signals from one unified structure, thereby reducing system complexity while maintaining device compatibility.
Solution Approach 2:
The integrated synchronization signal serves multiple functions simultaneously - it provides synchronization for both standard and low-power devices within a single signal structure. This universal approach allows one signal to fulfill multiple roles, eliminating the need for separate dedicated signals and optimizing resource utilization across different device types.
2Productivity
If multiple separate synchronization signals are transmitted, then each signal can be optimized for its target device, but the time and frequency resources are wasted due to lack of sharing
Solution Approach 1:
The patent merges the transmission of multiple synchronization signals into a single integrated signal structure. By multiplexing the low-power synchronization signal with the standard synchronization signal in the time-frequency domain, the system transmits both signals simultaneously without requiring separate transmission time slots, thereby improving synchronization efficiency and eliminating time resource waste.
3Reliability
If synchronization signals are transmitted at high power to ensure robust reception, then all devices can receive the signal reliably, but low-power devices consume excessive energy and cannot operate efficiently
Solution Approach 1:
The patent applies local quality by transmitting the low-power synchronization signal at a lower power level than the standard synchronization signal. This allows the signal to be optimized for low-power device requirements, enabling efficient energy consumption for these devices while maintaining reliable reception for standard devices through the higher power standard synchronization signal component.
Solution Approach 2:
The integrated synchronization signal is segmented into distinct components - a standard synchronization signal and a low-power synchronization signal - that can be received and processed differently by different device types. This segmentation allows each device type to selectively process only the relevant signal component, optimizing energy consumption while maintaining reception reliability.
Data Source
AI summary
Apparatuses and methods for integrated synchronization signals. A method of a user equipment (UE) in a wireless communication system includes identifying a first waveform and a second waveform, identifying a first symbol in a first synchronization signal, and receiving the first synchronization signal. The first symbol is a second symbol using the second waveform multiplexed over a third symbol using the first waveform.