Paging Transmission Layout for Multi-SIM Message Overlap

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Solution Overview

Problem

Multi-card user equipment (UE) experiences paging message loss when camping in multiple communications systems due to overlapping transmission locations, leading to inefficiencies in paging message delivery.

Innovation Solution

A method and device for transmitting paging messages to multi-card UE by employing various transmission strategies, including retransmission at multiple locations, offset-based transmission, and transmission at alternative locations, to ensure all SIM cards receive their messages without overlap.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If paging messages for multiple SIM cards are transmitted at the same transmission location, then transmission efficiency is improved, but paging message loss occurs due to overlapping transmission locations

Engineering Contradiction:
Improvetransmission efficiencyVSAvoidpaging message delivery reliability
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The transmission resources for paging messages are segmented by SIM card. Each SIM card is assigned dedicated transmission locations (first transmission locations for retransmission, second transmission locations for offset transmission) that do not overlap with other SIM cards. This segmentation prevents resource conflicts and ensures reliable message delivery for each SIM card while maintaining overall system efficiency.

Inventive Principle:
Principle #1Segmentation

2Reliability

If paging messages are retransmitted at multiple locations, then message delivery reliability is improved, but transmission resource consumption increases

Engineering Contradiction:
Improvemessage delivery reliabilityVSAvoidtransmission resource consumption
Core Design Contradiction:
ReliabilityVSLoss of energy

Solution Approach 1:

Different transmission strategies are applied locally to different SIM cards based on their specific needs. Some SIM cards receive retransmitted paging messages at first transmission locations, while others receive offset paging messages at second transmission locations. This localized customization ensures reliable delivery for each SIM card without unnecessarily consuming resources across all transmissions.

Inventive Principle:
Principle #3Local quality

3Reliability

If transmission locations are offset for different SIM cards, then message loss is prevented, but system complexity increases

Engineering Contradiction:
Improvemessage loss preventionVSAvoidtransmission location management complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The system manages transmission location complexity by changing key parameters: assigning distinct first transmission locations for retransmission and second transmission locations for offset transmission. These parameter changes create a structured framework that prevents message loss while keeping the management system organized and tractable through clear parameter differentiation.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS12634881B2Paging transmission method and device
Publication Date: 2026.05.19 VIVO MOBILE COMM CO LTD
  • US12634881B2 patent drawing
  • US12634881B2 patent drawing
  • US12634881B2 patent drawing

AI summary

A paging message transmission method includes: receiving indication information from a core network device, the indication information is used to indicate a target transmission manner; and sending a first paging message to UE in the target transmission manner. The target transmission manner includes at least one of: for a second paging message of one SIM card, retransmitting the second paging message at X first transmission locations, transmitting the second paging message in an offset manner based on a predetermined offset and/or in a predetermined offset direction, or transmitting the second paging message at a second transmission location. The second transmission location is different from an original transmission location that is used to transmit the second paging message, M and X are integers greater than 1, N is a positive integer, and N is less than or equal to M.