Multi-SIM UE Registration Signaling for Coordinated PLMN Operations
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Solution Overview
Problem
Existing multiple SIM User Equipments (UEs) operate outside the scope of 3GPP standards, leading to network performance degradation due to varied implementations, which are not known to core networks.
Innovation Solution
An electronic device with multiple SIMs sends a request to a public land mobile network (PLMN) to register, indicating it is a multi-SIM device and providing multi-SIM assistance information, facilitating coordinated operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple SIM UEs operate outside the scope of 3GPP standards with varied implementations, then device versatility is improved, but network performance degrades
Solution Approach 1:
The patent segments the multi-SIM UE capabilities into distinct information elements (first SIM information, second SIM information, etc.) within the registration request. Each SIM is represented as a separate, structured data segment that the network can process independently, allowing the network to manage multiple SIMs systematically without being overwhelmed by proprietary variations.
Solution Approach 2:
The patent changes the parameter representation by introducing standardized fields (sim_index, plmn_id, operator_name, network_type) that transform diverse proprietary implementations into a unified parameter set. This parameter standardization allows the network to interpret different SIM configurations consistently, resolving the contradiction between device versatility and network performance.
2Productivity
If multi-SIM assistance information is provided in registration requests, then network management efficiency is improved, but device complexity increases
Solution Approach 1:
The patent creates a universal registration request structure that serves multiple functions: it registers the device with the network, provides multi-SIM capability information, indicates preferred network types, and enables quality of service differentiation. This multi-functional approach improves network management efficiency without requiring separate proprietary protocols for each function, thereby limiting the increase in device complexity.
Solution Approach 2:
The patent introduces a standardized information structure as an intermediary between the multi-SIM device and the network. This intermediary layer (the structured registration request with standardized fields) translates complex device capabilities into network-friendly data formats, improving network management efficiency while isolating the complexity from the network side.
3Adaptability or versatility
If proprietary multiple SIM implementations are used, then device functionality is improved, but network operations become unpredictable
Solution Approach 1:
The patent transforms unpredictable proprietary implementations into stable, predictable network operations by changing the data representation parameters. The standardized fields (sim_index, plmn_id, operator_name, network_id, quality_of_service) provide consistent parameter formats that the network can process deterministically, making network operations predictable while preserving device functionality.
Solution Approach 2:
The patent enables network feedback mechanisms by providing structured information about SIM preferences and network types in the registration request. The network can use this feedback information to make informed decisions about resource allocation, network selection, and service provisioning, stabilizing network operations while maintaining device functionality.
Data Source
AI summary
An electronic device including a receiver configured to receive a first Subscriber Identity Module (SIM); a receiver configured to receive a second SIM; and circuitry configured to receive data from the first SIM; and send a request, to a first public land mobile network (PLMN), to register the electronic device to the first PLMN, wherein the request indicates that the electronic device is a multi-SIM device and the request includes multi-SIM assistance information, and wherein the multi-SIM assistance information informs the first PLMN of the electronic device's preference for multi-SIM operations.