Low-Power Wake-Up Receiver OOK/OFDM Decoding for Lower Latency
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Solution Overview
Problem
Existing 5G communication paradigms for low-power wake-up receivers (LP-WUR) face processing delays and latency issues due to inefficient communication protocols, which hinder the effective use of low-power wake-up signals (LP-WUS) in conjunction with main radios, leading to suboptimal power-saving operations.
Innovation Solution
A method involving the decoding of communication signals with both on-off keying (OOK) and overlaid orthogonal frequency division multiplexing (OFDM) formats to determine low-power wake-up signals (LP-WUS), allowing for efficient activation of main radios while maintaining compatibility with existing high-powered 5G protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing 5G communication paradigms are used for LP-WUR, then compatibility with existing protocols is maintained, but processing delays and latency issues occur
Solution Approach 1:
The communication signal is segmented into two distinct formats: OOK format for basic wake-up signaling and overlaid OFDM format for enhanced data transmission. This segmentation allows the LP-WUR to efficiently process wake-up signals while maintaining compatibility with existing 5G protocols that use OFDM, thereby reducing processing delays
Solution Approach 2:
The patent introduces a dual-format signal dimension by overlaying OFDM signals on top of OOK signals. This dimensional approach enables the system to simultaneously support simple low-power wake-up detection and complex high-data-rate communication, resolving the latency issue by providing optimized paths for different communication needs
2Use of energy by moving object
If LP-WUR operates with lower complexity signals, then power consumption is reduced, but communication efficiency and data rate are limited
Solution Approach 1:
The patent merges OOK and OFDM signal formats into a unified dual-format system. The OOK component provides low-complexity, low-power operation for wake-up detection, while the overlaid OFDM component enables high-efficiency data transmission. This merging allows the LP-WUR to achieve both power savings and communication efficiency simultaneously
Solution Approach 2:
The OOK signal serves as an intermediary layer that carries the OFDM signal. This intermediary structure allows the LP-WUR to process simple OOK signals for wake-up detection while simultaneously enabling high-rate OFDM data transmission, thus bridging the gap between low-power operation and high communication efficiency
Data Source
AI summary
A system and a method are disclosed for low-power wake up signaling and reception for main radio wake-up and power saving. The system and method may relate to receiving, by a user equipment (UE), a communication signal, the communication signal comprising first data in an on-off keying (OOK) format and second data in an overlaid orthogonal frequency division multiplexing (OFDM) format; determining, by the UE, a low-power wake up signal (LP-WUS) by decoding the communication signal, wherein the LP-WUS is determined at least by decoding the second data in the overlaid OFDM format; and activating, by the UE, based on the determined LP-WUS, a main radio for receiving wireless communications.