Secondary Cell Wake-Up Preparation for Low-Power 5G Resumption
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Solution Overview
Problem
Existing wireless communication systems face challenges in improving power saving for user equipment (UE) in inactive states, particularly in 5G NR, where devices with extended battery life requirements struggle to sustain power without unacceptable communication latency.
Innovation Solution
Implementing a low-power Wake-Up Signal (WUS) to activate secondary cell (SCell) preparation before or during connection establishment, allowing devices to perform measurements and reduce power consumption by using a dedicated wake-up receiver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the UE performs measurements and prepares SCell before connection establishment, then power consumption is reduced and connection resumption is faster, but the device complexity increases due to additional measurement procedures and coordination with base station
Solution Approach 1:
The patent applies preliminary action by performing SCell measurements and preparations before the actual connection establishment. The UE measures candidate SCells and reports measurement results to the base station in advance, allowing the connection setup to be faster and more efficient when activation is needed, thus reducing overall power consumption while managing complexity through structured preparation phases
2Use of energy by moving object
If the UE uses a dedicated wake-up receiver for low-power operation, then power saving is improved, but the reliability of communication may be affected due to limited reception capabilities compared to full transceiver
Solution Approach 1:
The patent segments the communication function into two parts: a low-power wake-up receiver that handles only essential wake-up signals and basic communication, and a full transceiver that activates only when needed for data communication. This segmentation allows the UE to maintain low power consumption during idle periods while ensuring reliable communication when active, as the full transceiver is deployed only for necessary operations
3Use of energy by moving object
If the base station provides preconfiguration for SCell determination, then the measurement process is simplified and power saving is enhanced, but the adaptability to dynamic network conditions may be reduced
Solution Approach 1:
The patent implements dynamics by allowing the base station to provide preconfiguration for SCell determination while maintaining the flexibility to adjust configurations based on real-time network conditions. The preconfiguration includes parameters and candidate cell information that guide the UE's measurement process, but the system can dynamically update these configurations or select from pre-configured options based on current network state, thus balancing power saving with adaptability
Data Source
AI summary
Various example embodiments relate to secondary cell (SCell) preparation. An apparatus may receive, from a base station, a wake-up signal for activating means, of the apparatus, for bidirectional communication and determine, based on the wake-up signal, at least one candidate cell or carrier for a secondary cell for communication between the means for bidirectional communication and the base station. Apparatuses and methods are disclosed.