LP-WUS Scheduling for UE Wake-Up Delay Grouping
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Solution Overview
Problem
Current technologies do not adequately address varying wake-up delay capabilities of user equipment (UEs) in wireless communication networks, leading to inefficiencies in transitioning between power states and potential missed paging messages due to inconsistent wake-up delays.
Innovation Solution
UEs report their wake-up delay capabilities to the base station, which groups them based on similar capabilities and configures Low-Power Wake-Up Signals (LP-WUS) with tailored scheduling to ensure timely reception of paging messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single wake-up delay configuration is used for all UEs, then device complexity is reduced and ease of operation is improved, but reliability deteriorates due to missed paging messages and power management inefficiency
Solution Approach 1:
The patent segments UEs into different groups based on their wake-up delay capabilities. Each group is assigned a specific wake-up delay value, allowing the system to handle different UE types (e.g., IoT devices with longer delays vs. smartphones with shorter delays) separately. This segmentation resolves the contradiction by enabling reliable paging message reception for each group while maintaining manageable configuration complexity through grouping.
Solution Approach 2:
The patent changes the wake-up delay parameter based on UE capability reports. UEs report their supported wake-up delay values to the base station, which then configures appropriate delay parameters for each UE or group. This dynamic parameter adjustment ensures reliable message reception while allowing the system to adapt to different device requirements without excessive complexity.
2Use of energy by moving object
If wake-up delay is extended to allow deeper sleep states, then power consumption is reduced, but loss of time increases due to delayed message reception
Solution Approach 1:
The patent adjusts the wake-up delay parameter based on UE power requirements and capability. UEs that can tolerate longer delays (e.g., IoT devices) are configured with extended wake-up delays, allowing them to enter deeper sleep states and reduce power consumption. Meanwhile, UEs with stricter timing requirements are assigned shorter delays, ensuring timely message reception. This parameter customization resolves the contradiction between power savings and time loss.
3Loss of time
If wake-up delay is reduced for faster message reception, then loss of time is reduced, but use of energy increases due to less effective power saving
Solution Approach 1:
The patent optimizes the wake-up delay parameter to balance timing requirements and power consumption. By analyzing UE capability reports and service requirements, the system assigns appropriate delay values - shorter delays for time-sensitive applications and longer delays for power-sensitive applications. This targeted parameter adjustment resolves the contradiction by allowing each UE to operate at the optimal point between speed and energy efficiency.
4Adaptability or versatility
If uniform LP-WUS configuration is applied to all UEs, then device complexity and network configuration are simplified, but adaptability deteriorates for diverse UE types
Solution Approach 1:
The patent segments UEs into capability-based groups for LP-WUS configuration. Instead of creating complex individual configurations for each UE type, the system divides UEs into groups (e.g., IoT group, smartphone group) and applies standardized configurations within each group. This segmentation approach provides adaptability to diverse UE types while maintaining manageable configuration complexity through the use of group-based templates.
Solution Approach 2:
The patent implements universal LP-WUS configuration templates that can serve multiple UE types within a group. Each configuration template is designed to be multi-functional, accommodating various UEs with similar wake-up delay characteristics. This universality approach enhances adaptability across different device types while reducing overall configuration complexity by reusing standardized templates rather than creating unique configurations for each device.
Data Source
AI summary
The techniques described herein can include solutions for supporting user equipment (UE) wake-up delay capabilities. One or more UEs can communicate, to a base station, wake-up delay capability information indicating one or more wake-up delays supported by each UE. The base station can determine, based on the wake-up delay capability information, UE groups and a low-power wake-up signal (LP-WUS) configuration for each UE group. The base station can transmit the LP-WUS configuration for each UE group to the one or more UEs of each UE group. In some examples, LP-WUS configurations include LP-WUS occasions that are separated from paging occasions by time gaps. The UE can identify at least one time gap of the LP-WUS configuration information that is greater than or equal to at least one wake-up delay supported by the UE and monitor a LP-WUS configuration associated with the time gap.