High-Priority Paging Detection During Multi-Subscription UE Tune-Away
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
User equipment (UE) with multiple subscriptions faces challenges in efficiently detecting high priority paging messages across different subscriptions, leading to increased latency, power consumption, and network overhead due to the inability to differentiate between urgent and non-urgent messages, especially in dual SIM scenarios.
Innovation Solution
Implementing a high priority identifier associated with a common set of paging occasions for a subscription, allowing the UE to tune away from a network connection with a second subscription and monitor for high priority paging messages using this identifier, thereby determining their presence efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE monitors paging occasions for multiple subscriptions simultaneously, then the UE can detect paging messages for both subscriptions, but the latency increases and power consumption increases due to inability to prioritize high priority messages
Solution Approach 1:
The patent segments the paging monitoring process by introducing a high priority identifier that allows the UE to separately identify and prioritize high priority paging messages among multiple subscriptions. The UE divides its monitoring attention by first checking for high priority identifiers in paging occasions, ensuring critical messages are detected promptly while still maintaining coverage for regular paging messages.
Solution Approach 2:
The network performs preliminary action by tagging high priority paging messages with a distinctive high priority identifier before transmission. This allows the UE to pre-configure its monitoring strategy to recognize and prioritize these tagged messages, reducing detection latency without requiring complex real-time analysis during paging occasions.
2Reliability
If the UE monitors all paging occasions for all subscriptions, then no high priority messages are missed, but power consumption increases due to continuous monitoring of all subscriptions
Solution Approach 1:
The patent segments the power consumption profile by creating a differentiated monitoring mode. The UE separates high priority paging monitoring from regular paging monitoring, allocating power resources preferentially to detecting messages with high priority identifiers. This segmentation allows the UE to maintain high detection reliability for critical messages while reducing overall power consumption by adjusting monitoring intensity for non-critical subscriptions.
Solution Approach 2:
The UE applies partial monitoring action by focusing its full attention on detecting high priority paging messages during paging occasions, rather than uniformly monitoring all subscriptions at equal intensity. The high priority identifier enables the UE to perform excessive monitoring (full power) only when high priority messages are detected, while using reduced monitoring (lower power) for regular messages, thus optimizing the energy-reliability tradeoff.
3Reliability
If the UE uses separate identifiers for high priority and regular paging messages, then high priority messages can be differentiated, but network overhead increases due to additional identifier management
Solution Approach 1:
The patent merges the high priority identifier functionality into the existing paging message structure rather than creating a completely separate signaling mechanism. The high priority identifier is integrated into the paging record or paging indication, allowing priority differentiation to be achieved by combining existing paging elements with priority tagging, thus minimizing additional network overhead while maintaining reliable priority differentiation.
Solution Approach 2:
The high priority identifier serves multiple functions simultaneously: it acts as a priority tag for message classification, a trigger for urgent UE response, and a selector for differentiated monitoring behavior. This multi-functionality reduces the need for separate signaling mechanisms for each function, thereby minimizing overall network overhead while achieving reliable message priority differentiation and efficient UE resource management.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, in association with a first subscription of the UE, an indication of a high priority identifier to be used for paging messages associated with the first subscription. The high priority identifier may be associated with a same set of paging occasions as a second identifier allocated to the UE for paging. The UE may tune away from a network connection associated with a second subscription of the UE and monitor one or more paging occasions associated with the high priority identifier and the second identifier based at least in part on tuning away. Accordingly, the UE may determine, using the high priority identifier, whether a high priority paging message is present for the UE based at least in part on the monitoring. Numerous other aspects are provided.