Wireless DTX Scheduling for Lower Power and Stable UL Coverage
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Solution Overview
Problem
5G devices experience unnecessary power consumption due to always-on signals with long periodicity, especially in low traffic scenarios, and there is a lack of efficient UL coverage compared to 4G systems, necessitating solutions for signal transmission enhancement to reduce power consumption and improve UL coverage.
Innovation Solution
Implementing a Discontinuous Transmission (DTX) operation in communication devices, where network nodes provide indications for DTX patterns, including on and off durations, periodicity, and configurations through various signaling methods to manage activities and reduce unnecessary transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If always-on signals are transmitted with long periodicity, then coverage is provided, but power consumption increases unnecessarily
Solution Approach 1:
The patent implements Discontinuous Transmission (DTX) operation where signal transmission occurs periodically with defined on-duration and off-duration periods. During on-duration, signals are transmitted to maintain coverage, while during off-duration, transmission is suspended to save power. This periodic action pattern allows the system to balance between maintaining adequate coverage and reducing unnecessary power consumption during low traffic scenarios.
2Loss of energy
If DTX operation is implemented to reduce power consumption, then energy efficiency improves, but signal transmission reliability may deteriorate
Solution Approach 1:
The patent employs dynamic adjustment of DTX parameters including on-duration, off-duration, and periodicity based on traffic conditions and channel state. The system can adaptively modify transmission patterns to maintain signal reliability when needed while maximizing energy savings during low activity periods. This dynamic approach allows the system to respond to changing conditions rather than using fixed transmission patterns.
Solution Approach 2:
The system utilizes feedback mechanisms where the communication device receives indications of DTX operation from the network node and adjusts its behavior accordingly. The network can monitor traffic patterns and channel conditions, then provide feedback to optimize DTX parameters, ensuring that signal transmission reliability is maintained while achieving energy efficiency goals.
3Use of energy by moving object
If transmission activities are restricted during off duration, then power consumption decreases, but UL coverage may be affected
Solution Approach 1:
The patent implements preliminary actions by configuring DTX parameters in advance based on predicted traffic patterns and channel conditions. The network node provides indications of upcoming DTX patterns allowing communication devices to prepare and buffer necessary transmissions before off-duration periods begin. This ensures that critical uplink coverage requirements are met before power-saving mode activates, preventing coverage degradation.
Data Source
AI summary
Methods, apparatus, system for wireless communication are described and include a method of wireless communication. A method of wireless communication, comprising receiving, by a communication device, an indication of a discontinuous transmission (DTX) operation by a network node; and operating the communication device according to the indication of the DTX operation.