Clustered Paging Windows for Low-Load Cell UE Synchronization
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Solution Overview
Problem
Existing paging mechanisms in low load cells extend SSB burst transmission periodicity, leading to increased UE wake-up time and energy consumption without effectively saving network energy or reducing UE battery life.
Innovation Solution
Implementing clustered paging windows with additional reference signals to allow UEs to synchronize efficiently within a dedicated paging window, enabling longer SSB burst transmission periodicity for network energy savings without impacting UE paging latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If SSB burst transmission periodicity is extended to save network energy, then network energy consumption is reduced, but UE wake-up time increases and UE energy consumption increases
Solution Approach 1:
The patent segments the paging window into multiple paging occasions (POs) within a clustered paging window. This allows the network to extend the overall periodicity while maintaining multiple synchronized POs within the window, enabling UEs to wake up at specific synchronized moments rather than continuously monitoring, thus reducing UE energy consumption while allowing longer network periodicity.
Solution Approach 2:
The patent introduces a configured offset that allows UEs to determine their paging occasion in advance based on their UE ID. This preliminary determination enables UEs to wake up at the correct synchronized time without needing to continuously monitor, reducing wake-up time and energy consumption while the network can use longer periodicity.
2Use of energy by stationary object
If SSB burst transmission periodicity is extended, then network energy is saved, but UE battery life is reduced due to increased wake-up frequency
Solution Approach 1:
By segmenting the paging window into multiple POs with specific synchronization times, the patent allows UEs to wake up at predetermined synchronized moments rather than continuously. This segmented approach reduces UE wake-up frequency and duration, extending battery life while the network benefits from extended periodicity for energy savings.
Solution Approach 2:
The configured offset mechanism allows UEs to preliminarily determine their wake-up time based on UE ID before actually waking up. This enables precise wake-up at the correct moment without unnecessary early wake-ups, reducing energy consumption and extending battery life while the network uses longer periodicity.
3Measurement precision
If clustered paging window is implemented with additional reference signals, then UE synchronization is improved, but device complexity increases
Solution Approach 1:
The patent makes the additional reference signals serve multiple functions: they provide synchronization information for the clustered paging window, enable UE to determine the configured offset, and facilitate proper timing for paging occasions. This multi-functionality improves synchronization precision without proportionally increasing device complexity.
Solution Approach 2:
The additional reference signals act as an intermediary between the network's extended periodicity and the UE's synchronization needs. These signals bridge the gap by providing the necessary timing information for UEs to synchronize correctly within the clustered paging window, improving precision while adding minimal complexity.
Data Source
AI summary
Systems, methods, apparatuses, and computer program products for paging clustering in low load cell are provided. A method may include receiving, from a network element, clustered paging information comprising at least a paging window configuration. The method may also include determining a paging occasion within a clustered paging window based on the paging window configuration. The method may further include monitoring the paging occasion within the clustered paging window.