Paging Configuration for 5G Base Stations Under Load
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Solution Overview
Problem
The 5G system faces challenges in paging configuration due to unbalanced Synchronous Signal Block (SSB) distribution, leading to increased paging overhead and inefficiencies in notifying User Equipment (UE) in idle states.
Innovation Solution
A method and device for dynamically adjusting paging configuration based on system load thresholds, sending specific paging occasion (PO) configurations to UE through system information updates or RRC signaling, optimizing PO distribution to reduce overhead and delay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If beam scanning and beam management are introduced for 5G high band communication, then communication capability is improved, but device complexity increases
Solution Approach 1:
The patent segments the paging occasion (PO) configuration into different sets based on SSB (Synchronous Signal Block) distribution. The effective PO set is divided into first effective PO set and second effective PO set, where the first set corresponds to POs near SSB and the second set corresponds to POs far from SSB. This segmentation allows the base station to selectively configure POs based on actual network conditions, reducing complexity while maintaining communication capability.
Solution Approach 2:
The patent introduces dynamic adjustment mechanisms where the base station can switch between different PO configuration modes (first mode with first effective PO set, second mode with second effective PO set) based on real-time system load and SSB distribution characteristics. This dynamic adaptation allows the system to optimize performance without requiring complex fixed configurations for all scenarios.
2Reliability
If all beams are scanned to send paging message to UE in idle state, then reliability is improved, but loss of time increases
Solution Approach 1:
The patent applies local quality by differentiating PO configurations based on their spatial relationship with SSB. POs near SSB (first effective PO set) are configured with higher priority and different parameters compared to POs far from SSB (second effective PO set). This allows the system to focus scanning resources on locally relevant areas first, maintaining reliability for most UEs while reducing overall paging time.
Solution Approach 2:
The patent changes key parameters of PO configuration dynamically, including the effective PO set, PO offset, and scanning priority, based on system load conditions and SSB distribution. Under light load, the system uses a reduced PO set with optimized parameters, while under heavy load, it expands to include more POs. This parameter adaptation maintains reliability when needed and reduces time when conditions permit.
3Loss of energy
If paging configuration is optimized for low-load conditions, then paging overhead is reduced, but reliability deteriorates during high-load conditions
Solution Approach 1:
The patent implements dynamic PO configuration adaptation where the base station monitors system load conditions and switches between different paging strategies. During low-load periods, the system uses a reduced effective PO set (first effective PO set) with optimized parameters to minimize overhead. When load increases, the system transitions to a broader PO configuration (second effective PO set) to maintain reliability, thus dynamically balancing overhead reduction with reliability maintenance.
Solution Approach 2:
The patent prepares multiple PO configuration sets in advance (first effective PO set for low load, second effective PO set for high load) so the base station can quickly switch between them based on real-time conditions. This preliminary preparation allows the system to immediately optimize for reliability when needed without incurring excessive overhead during normal operation.
Data Source
AI summary
A paging configuration method includes: judging whether a present system load level of a present cell is greater than a preset load threshold or not; and when the present system load level is lower than or equal to the preset load threshold, sending first configuration information to each UE in the present cell, the first configuration information including multiple Paging Occasions (POs), a first effective PO set in the multiple POs, an identifier of UE and an identifier of an effective PO corresponding to the UE in the first effective PO set.