MIB Modification Period for Low-Latency UL-WUS Signaling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing network energy savings (NES) modes due to inflexible uplink wakeup signal (UL-WUS) configurations, which can lead to increased latency and inter-cell interference, while integrating UL-WUS into control signaling may disrupt UE behavior.
Innovation Solution
A UE transmits an UL-WUS based on fixed parameters and additional parameters received via broadcast signaling, allowing separate UL-WUS occasions from random access occasions, with a MIB modification scheme to handle periodic or aperiodic content changes in broadcast signaling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If UL-WUS configuration is made flexible with separate wakeup signal occasions, then latency is reduced and inter-cell interference is minimized, but device complexity and signaling overhead increase
Solution Approach 1:
The patent segments the UL-WUS configuration into two distinct parts: fixed parameters (preconfigured, UE-specific) and additional parameters (broadcast via MIB, cell-specific). This segmentation allows the UE to maintain its own fixed configuration while adapting to cell-specific conditions through broadcast signaling, thereby reducing latency by enabling separate wakeup signal occasions without requiring complete reconfiguration.
Solution Approach 2:
The patent introduces dynamic adaptability by allowing the UL-WUS configuration to be modified through broadcast signaling (MIB) while maintaining a static core configuration. The network can dynamically adjust parameters such as frequency resources, time resources, and other cell-specific settings without disrupting the UE's fundamental UL-WUS capability, enabling flexible wakeup signal occasions that reduce latency and interference.
2Loss of energy
If UL-WUS parameters are integrated into control signaling, then signaling overhead is reduced, but UE behavior is disrupted
Solution Approach 1:
The patent extracts only the necessary additional UL-WUS parameters from the complete configuration and transmits them separately via broadcast signaling (MIB), while the UE maintains its preconfigured fixed parameters locally. This extraction approach reduces signaling overhead by avoiding transmission of redundant fixed parameters while preserving UE behavior stability by keeping the core configuration unchanged and UE-specific.
3Adaptability or versatility
If broadcast signaling content changes frequently to accommodate dynamic UL-WUS configurations, then adaptability improves, but measurement precision and processing reliability deteriorate
Solution Approach 1:
The patent implements periodic broadcast signaling for UL-WUS parameter updates, where the network transmits additional parameters at defined intervals rather than continuously or on-demand. This periodic approach allows the system to maintain adaptability by regularly updating configurations while preserving processing reliability by providing predictable, periodic opportunities for UEs to process and apply parameter changes without being overwhelmed by frequent or aperiodic updates.
Data Source
AI summary
A user equipment (UE) may transmit an UL-WUS to a network entity based on a predefined uplink wakeup signal (UL-WUS) parameter and one or more additional UL WUS parameters. The UE may obtain the at least one predefined UL-WUS parameter from a pre-configuration, signaling from a network entity, or both. The UE may receive the additional UL-WUS parameters via broadcast signaling from a network entity. The broadcast signaling may include a master information block (MIB), and may indicate the additional UL-WUS parameters via a set of bits. The UE may also receive an indication of a modification scheme associated with content changes of the broadcast signaling, an indication of a content change in the broadcast signaling, or both. The UE may process one or more subsequent broadcast signals based on the indication of the change, the indicated modification scheme, or both.