Reference Signal Transmission in Cell Discontinuous Cycles
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Solution Overview
Problem
Wireless communication systems face challenges in energy efficiency, particularly in cell discontinuous transmission (C-DTX) and reception (C-DRX) configurations, where network nodes struggle to enter deeper sleep modes due to the need to maintain connectivity and track user equipment (UE) during non-active times, leading to increased power consumption.
Innovation Solution
A user equipment (UE) processing system configured to receive and respond to C-DTX and C-DRX configuration information, selectively transmitting or dropping reference signals and uplink signals during non-active times based on configured use and connectivity states, allowing network nodes to enter sleep states while maintaining essential connectivity and tracking functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If network nodes transmit and receive channels and signals continuously to maintain UE connectivity and tracking, then UE connectivity and tracking reliability are improved, but network energy consumption increases
Solution Approach 1:
The patent implements C-DTX/C-DRX cycles that periodically switch network nodes between active transmission/reception states and sleep states. During non-active times, reference signals are selectively transmitted or omitted based on configuration, allowing nodes to enter periodic sleep modes while maintaining essential connectivity functions during active periods.
2Use of energy by moving object
If network nodes enter deeper sleep modes during non-active times to save energy, then network energy savings are improved, but UE connectivity and tracking capability deteriorate
Solution Approach 1:
The patent applies partial action by selectively transmitting only essential reference signals during non-active times based on configured use parameters. Not all reference signals are transmitted during sleep periods - only those necessary for maintaining basic connectivity and tracking functions, thereby achieving energy savings while preserving essential capabilities.
Solution Approach 2:
The patent changes the transmission parameters of reference signals during non-active times. Configuration information modifies which reference signals are transmitted, their timing, and their characteristics, allowing the system to adapt transmission behavior to energy-saving requirements while maintaining sufficient connectivity support.
3Measurement precision
If reference signals are transmitted during non-active times to maintain tracking, then tracking precision is improved, but network energy consumption increases
Solution Approach 1:
The patent applies local quality by differentiating the transmission behavior of different reference signals based on their configured use. Some reference signals continue to be transmitted during non-active times while others are omitted, creating localized quality variations in signal transmission that match the specific needs of different tracking and connectivity functions.
Data Source
AI summary
A user equipment (UE) may be configured for transmission of reference signals in association with cell discontinuous transmission (DTX) and/or discontinuous reception (DRX) (DTX/DRX) configurations. In some aspects, the UE may be configured for transmitting or receiving reference signals or dropping communications during a non-active time of a C-DTX/DRX cycle. In some aspects, a UE may transmit or receive reference signals during a non-active time of a C-DTX/DRX cycle in association with a configured use of the reference signals or a connectivity state of the UE.