Data Transmission Wake-Up Signal Detection for Low-Power Initial Access
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Solution Overview
Problem
The initial access process in a terminal consumes a significant amount of power due to the reception of synchronization signals and system messages without prior information, leading to high power consumption.
Innovation Solution
A data transmission method involving the detection of a first signal to receive a preamble information block, which includes synchronization signals and system message channels, allowing the terminal to conserve power by using a low-power receiver until the signal is detected, and then transitioning to a full-power state for data reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal performs initial access process to receive synchronization signal and system message, then the terminal can access the system, but the power consumption increases significantly
Solution Approach 1:
The base station sends a first signal (wake-up signal) before the actual data transmission to preliminarily notify the terminal. The terminal detects this low-power signal first, and only if detected does it proceed to receive the subsequent preamble information block, thereby avoiding unnecessary full-power reception operations
Solution Approach 2:
The initial access process is segmented into two stages: first detecting a simple wake-up signal, then receiving the detailed preamble information block. This segmentation allows the terminal to use low-power detection for the first stage and only activate full-power reception when necessary, resolving the contradiction between reliable access and power consumption
2Loss of information
If the terminal continuously monitors for system messages without prior information, then the terminal can ensure it receives all necessary system information, but the power consumption remains high
Solution Approach 1:
The base station transmits the first signal in advance to preliminarily indicate whether a preamble information block will be sent. This preliminary action allows the terminal to prepare appropriately - maintaining low-power state if no signal is detected, or switching to full-power reception if the signal is detected, thus avoiding continuous high-power monitoring while ensuring no information is missed
Solution Approach 2:
The terminal dynamically adjusts its reception state based on the detection result of the first signal. It transitions from a low-power monitoring state to a full-power reception state only when necessary, making the power consumption adaptive rather than continuous, thereby reducing energy usage while maintaining complete information reception
Data Source
AI summary
Provided are a data transmission method and device and a storage medium. The data transmission method applied to a first communication node includes detecting a first signal; and receiving a preamble information block according to the detection result of the first signal, where the preamble information block includes at least one of: a synchronization system message block, a synchronization signal, a primary system message bearer channel, a secondary system message bearer channel, a first reference signal, or a second signal.