SIM Ranking and Connection Routing for Multi-SIM Devices
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Solution Overview
Problem
Wireless communication systems face challenges in establishing optimal connections between devices equipped with multiple subscriber identification modules (SIMs) due to unawareness of SIM capabilities, leading to reduced quality of service (QoS) and degraded user experience, as they blindly route communications without considering the capabilities of SIMs at each device.
Innovation Solution
The system compares capabilities of SIMs at both devices and identifies a suitable SIM pair for connection routing based on a lookup table (LUT) that ranks SIMs according to their capabilities, including QoS, supported radio access technologies, and network capabilities, to establish a connection that optimizes QoS for communication applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the system blindly routes communications without considering SIM capabilities, then the connection establishment is simple and fast, but the quality of service (QoS) is reduced and user experience is degraded
Solution Approach 1:
The system performs preliminary capability assessment of SIMs at both devices before establishing connections. The network device obtains capability information about multiple SIMs in advance, ranks them according to specific criteria, and stores this ranking information for future connection decisions, avoiding the need for complex real-time evaluations during connection establishment
Solution Approach 2:
The network device acts as an intermediary that collects capability information from both devices, performs the ranking and selection of optimal SIM pairs, and manages the connection establishment process. This centralizes the complexity in the network device rather than requiring complex logic at the user devices
2Reliability
If the system compares capabilities and ranks SIMs to optimize QoS, then the quality of service is enhanced, but the system complexity increases due to capability comparison and ranking processes
Solution Approach 1:
The system transforms the complex capability comparison problem into a simplified ranking parameter. Instead of comparing multiple capability dimensions in real-time, the network device evaluates SIMs based on capability information and assigns rank values, converting a multi-dimensional comparison problem into a single-parameter selection process
Solution Approach 2:
The capability comparison and ranking process is performed in advance by the network device before actual connection establishment. The network device obtains capability information, performs comprehensive evaluation, and pre-ranks SIMs so that connection decisions can be made by simply selecting the highest-ranked SIM pair without repeating complex comparisons
3Productivity
If the system uses capability-based SIM pairing, then spectral efficiency is enhanced through optimal resource utilization, but the information processing requirement increases due to capability collection and comparison
Solution Approach 1:
The system extracts only the essential capability information needed for ranking from the complete SIM capability sets. The network device obtains and processes specific capability parameters that are most relevant for connection optimization, rather than handling all possible capability data, thereby reducing information processing load while maintaining ranking accuracy
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A base station may receive an indication for establishing communications between a first user equipment (UE) and a second UE based on a first subscriber identification module (SIM) pair. The base station may compare a first set of capabilities associated with SIMs of the first UE and a second set of capabilities associated with SIMs of the second UE based on the indication. The base station may determine a set of rankings associated with the SIMs of the second UE based on the comparison of the sets of capabilities. The base station may identify a second SIM pair for a connection for establishing the communications between the first UE and the second UE. The base station may establish the connection between the first UE and the second UE based on the second SIM pair.