Coordinated Multi-SIM Handover Signaling for Power Reduction
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Solution Overview
Problem
Multi-card terminals with multiple SIM cards face inefficiencies due to independent SIM card operations, leading to increased power consumption and resource waste, as well as disruptions in service continuity and network resource management, especially during cell handovers.
Innovation Solution
A method where a source base station receives a measurement report from a multi-card terminal and determines if a SIM card needs to hand over from a source cell to a target cell, then sends multi-card information to the target base station, including details about both SIM cards, to facilitate coordinated handovers and reduce signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If SIM cards work independently during cell handover, then each SIM card can be managed separately, but power consumption increases and service continuity is disrupted
Solution Approach 1:
The patent merges the handover management of multiple SIM cards into a unified process. The source base station receives measurement reports and sends multi-card information to the target base station in a coordinated manner, allowing both SIM cards to share the same handover resources and signaling channels, thereby reducing overall power consumption while maintaining independent SIM card functionality
2Ease of operation
If SIM cards work independently during cell handover, then each SIM card can be managed separately, but service continuity is disrupted
Solution Approach 1:
The patent implements preliminary action by having the source base station prepare and send multi-card information to the target base station before the actual handover execution. This advance preparation ensures that the target base station is ready to receive both SIM cards simultaneously, maintaining service continuity while allowing independent SIM card management
3Ease of operation
If SIM cards work independently during cell handover, then each SIM card can be managed separately, but network resource management is inefficient
Solution Approach 1:
The patent combines the handover signaling for multiple SIM cards into a single multi-card information message. Instead of processing separate handover requests for each SIM card, the source base station aggregates the information and transmits it together to the target base station, significantly improving network resource management efficiency while preserving independent SIM card operation capabilities
Data Source
AI summary
An information sending method including: a source base station receives a measurement report of a target SIM card reported by a multi-card terminal, the multi-card terminal being a mobile terminal provided with at least two SIM cards, and the target SIM card being one of the at least two SIM cards; the source base station determines that the target SIM card needs to be handed over from a source cell to a target cell according to the measurement report; and in a process of handing over the multi-card terminal from the source cell to the target cell, the source base station sends multi-card information of the multi-card terminal to a target base station, the target base station being a base station providing the target cell, and the multi-card information including information related to the at least two SIM cards.