Downlink control through low power signals

By receiving superimposed signals on low-power synchronization signals and using OFDM sequences for synchronization, the challenges of synchronization and frequency synchronization in low-power signal systems are solved, improving the robustness of the system and the efficiency of downlink control.

CN122269418APending Publication Date: 2026-06-23NOKIA TECHNOLOGIES OY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NOKIA TECHNOLOGIES OY
Filing Date
2025-12-19
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

When communicating via low-power signals, devices face challenges in terms of power consumption, especially in systems that integrate superimposed signals and low-power signals. Existing technologies struggle to effectively address synchronization and frequency synchronization issues.

Method used

By receiving superimposed signals on one or more symbols of the low-power synchronization signal (LP-SS), time and frequency synchronization is achieved using orthogonal frequency division multiplexing (OFDM) sequences, and detection and configuration of ON symbols are realized through physical downlink control channel (PDCCH) resource configuration and downlink control information (DCI) signaling.

Benefits of technology

It improves the robustness and efficiency of low-power systems, enhances the capacity of downlink control, solves the problems of synchronization and frequency synchronization, and alleviates the difficulties of DL control scheduling.

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Abstract

The present disclosure relates to downlink control through low power signals, and in particular, apparatuses, methods, and systems for integrating a superimposed signal and a low power signal are provided. In some embodiments, an apparatus can be configured to: (1) receive information via one or more superimposed signals over one or more symbols of one or more low power synchronization signals (LP-SSs); and (2) based on the received information, perform time synchronization and frequency synchronization of one or more physical signal properties of the one or more superimposed signals based on one or more reference symbols, wherein the one or more reference symbols are included in the one or more symbols.
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