Paging DCI System Configuration Updates for Faster NR UE Access
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Solution Overview
Problem
In NR user equipment (UE) operating in RRC_IDLE or RRC_INACTIVE states, dynamic modifications to system parameters such as synchronization signal and physical broadcast channel block (SSB) periods are not timely notified, leading to UE access delays and impaired communication performance.
Innovation Solution
A method and apparatus for a terminal to receive paging downlink control information (DCI) from a network-side device, obtaining system configuration information including SSB period, SMTC period, SSB transmission configuration, PRACH configuration index, and paging DRX information, enabling timely adjustments to monitoring parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the network-side device dynamically modifies system parameters (SSB period, SMTC period, etc.), then the system can adapt to changing communication conditions, but the UE cannot be notified of the modification in a timely manner, causing access delay
Solution Approach 1:
The patent applies preliminary action by having the network-side device send system parameter modification information to the UE in advance through paging DCI before the actual parameter change takes effect. This allows the UE to prepare for the upcoming parameter change and adjust its monitoring parameters accordingly, reducing access delay when the modification becomes effective.
Solution Approach 2:
The patent implements feedback by establishing a notification mechanism where the network-side device sends modification information about system parameters (SSB period, SMTC period, etc.) back to the UE through paging DCI. This feedback loop ensures the UE is informed of parameter changes and can adjust its behavior accordingly, resolving the timing issue between network modification and UE awareness.
2Speed
If the UE monitors system parameters continuously to ensure timely detection of changes, then the UE can respond quickly to parameter modifications, but this increases energy consumption and processing overhead
Solution Approach 1:
The patent applies periodic action by having the UE monitor paging DCI at predetermined paging occasions rather than continuously monitoring for parameter changes. The network sends modification information periodically through paging DCI at scheduled intervals, allowing the UE to wake up, check for updates, and go back to sleep mode, thus balancing detection speed with energy consumption.
3Loss of information
If the network sends detailed system parameter modifications through traditional RRC signaling, then the UE receives complete configuration information, but the UE cannot be notified in a timely manner and may miss dynamic changes
Solution Approach 1:
The patent applies universality by making the paging DCI serve multiple functions: it not only conveys paging information but also carries system parameter modification information (SSB period, SMTC period, SSB transmission configuration, PRACH configuration index, paging DRX configuration). This multi-functional approach allows timely notification of parameter changes through an existing high-priority channel without requiring separate signaling mechanisms.
Data Source
AI summary
This application discloses an information configuration method and apparatus, a terminal, and a network-side device. An information configuration method according to an embodiment of this application includes: receiving, by a terminal, paging downlink control information DCI sent by a network-side device; and obtaining, by the terminal, system configuration information based on the paging DCI; where the system configuration information includes at least one of the following configuration parameters: a synchronization signal and physical broadcast channel block SSB period; a synchronization signal block measurement timing configuration SMTC period; SSB transmission configuration information; physical random access channel PRACH configuration index information; paging discontinuous reception DRX configuration information; and period configuration information of a common signal.