Synchronization Sub-Signal Mapping for Narrowband Signal Detection
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Solution Overview
Problem
Narrowband terminal devices face high energy consumption when detecting synchronization signals due to the large resource blocks occupied by primary and secondary synchronization signals in existing communication systems.
Innovation Solution
The method involves generating and mapping sub-signals within the synchronization signal to reduce resource block usage, allowing narrowband terminal devices to perform signal detection efficiently by utilizing sub-signals of the primary or secondary synchronization signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the synchronization signal occupies a large quantity of resource blocks to ensure comprehensive detection capability, then the detection accuracy is improved, but the energy consumption of narrowband terminal devices increases
Solution Approach 1:
The patent divides the synchronization signal into multiple sub-signals (first sub-signal, second sub-signal, third sub-signal) that are mapped to different frequency domain resources. Narrowband terminal devices can selectively detect only the sub-signals within their supported bandwidth, while wideband terminal devices can detect all sub-signals. This segmentation allows narrowband devices to reduce energy consumption by detecting fewer sub-signals while still achieving synchronization, and maintains detection accuracy for all device types.
2Adaptability or versatility
If the synchronization signal occupies a large quantity of resource blocks to support wideband terminal devices, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The patent designs a universal synchronization signal structure where multiple sub-signals are transmitted simultaneously across different frequency resources. This single signal structure serves multiple functions: it supports both narrowband terminal devices (which detect a subset of sub-signals within their bandwidth) and wideband terminal devices (which detect all sub-signals). This multi-functional design achieves compatibility across different device types without requiring separate synchronization signals for each device category.
Data Source
AI summary
A communication method and a related apparatus are disclosed. The method includes: receiving a first signal on a first frequency domain resource and a first time unit, where the first signal is a primary synchronization signal or a secondary synchronization signal, the first signal includes at least two signals, the at least two signals includes a second signal and a third signal, the second signal is mapped to a second frequency domain resource, the third signal is mapped to a third frequency domain resource, and the second frequency domain resource and the third frequency domain resource are located in the first frequency domain resource; and performing signal detection on the first time unit based on at least one of the at least two signals.