Uplink Control Channel Power Saving Mode for 5G UE
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Solution Overview
Problem
The increasing power consumption of devices in 5G communication systems, particularly in user equipment (UE), poses a challenge as it leads to higher operational costs and inefficiencies, especially in IoT applications where devices require long battery life and reduced power consumption.
Innovation Solution
A method and apparatus for transmitting an uplink control channel in a power saving mode, where the UE receives configuration information about power saving modes, determines whether to apply them, and transmits the uplink control channel based on the applied mode, utilizing L1 signaling to reduce power consumption by adjusting transmission and reception parameters such as BWP configuration and PDCCH monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE continuously monitors control channels and transmits uplink control channels at regular intervals, then the communication reliability and responsiveness are improved, but the power consumption increases
Solution Approach 1:
The patent implements discontinuous transmission (DTX) where the UE transmits uplink control channels only in periodic intervals rather than continuously. The UE determines transmission opportunities based on configured uplink control resource sets and transmits control information only when data is available or at scheduled intervals, thereby reducing power consumption while maintaining communication reliability through periodic monitoring and transmission.
Solution Approach 2:
The patent enables dynamic adaptation of uplink control channel transmission by allowing the UE to adjust transmission behavior based on data availability, channel conditions, and configured parameters. The UE can dynamically select from multiple uplink control resource sets and adjust transmission timing and resources, optimizing the balance between reliability and power consumption according to real-time conditions.
2Reliability
If the UE monitors multiple control resource sets and transmits control information frequently, then the control information delivery reliability is improved, but the processing complexity and power consumption increase
Solution Approach 1:
The patent divides control resources into multiple uplink control resource sets, each with different configurations for monitoring and transmission. The UE can be configured with multiple resource sets and select appropriate subsets for monitoring, segmenting the control channel monitoring task into manageable groups. This segmentation allows the UE to reduce monitoring complexity by focusing on specific resource sets while maintaining reliable control information delivery through diverse resource options.
3Speed
If the UE uses advanced 5G communication technologies such as beamforming and massive MIMO, then the data rate and propagation distance are improved, but the power consumption and device complexity increase
Solution Approach 1:
The patent optimizes power consumption by dynamically adjusting transmission parameters including power levels, resource allocation, and modulation schemes based on channel conditions and data requirements. The UE adapts transmission power and resource usage to match actual communication needs, avoiding excessive power consumption associated with always using maximum-capability modes while maintaining high data rates when conditions warrant.
Data Source
AI summary
Disclosed is a method of transmitting an uplink control channel according to a power saving mode of a user equipment, including receiving configuration information about at least one power saving mode, determining whether to apply a power saving mode of the at least one power saving mode, applying the power saving mode based on a result of the determining, and transmitting an uplink control channel based on configuration information corresponding to the applied power saving mode.