Evolved Multimode System Selection for Radio Access Technology
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Solution Overview
Problem
Current mobile device systems face limitations in system selection for multiple radio access technologies, particularly with dual-mode handsets that require efficient selection and management across different air-interface technologies, leading to suboptimal performance and increased power consumption.
Innovation Solution
The implementation of an evolved multimode system selection (eMMSS) scheme that allows for the selection of radio access technologies from a plurality of technologies, including 3GPP and 3GPP2 systems, using a multimode system selection scheme and capability constraints, enabling efficient system selection and power management across multiple radio access technologies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional system selection methods are used for multiple radio access technologies, then device compatibility is maintained, but system selection efficiency deteriorates and power consumption increases
Solution Approach 1:
The patent pre-provisions system selection parameters and capability constraints in the smart card before the device needs to select a radio access technology. The multimode system selection scheme is pre-configured with priority lists and association rules, allowing the device to quickly determine the optimal system without extensive real-time scanning and comparison, thereby improving selection efficiency while reducing power consumption.
Solution Approach 2:
The smart card acts as an intermediary that stores and provides system selection parameters to the mobile device. Instead of the device performing complex real-time analysis of multiple radio access technologies, it queries the pre-configured smart card which returns the optimal selection based on capability constraints, thus reducing the computational and energy burden on the device.
2Adaptability or versatility
If dual-mode handsets support multiple radio access technologies, then system versatility is improved, but device complexity increases
Solution Approach 1:
The patent separates the system selection functionality into distinct components: the mobile device handles radio access technology operations, while the smart card stores and manages system selection parameters and capability constraints. This segmentation allows the device to support multiple radio access technologies without increasing its internal complexity, as the management logic is externalized to the smart card.
Solution Approach 2:
The smart card serves as an intermediary that manages the complexity of supporting multiple radio access technologies. It stores pre-configured system selection parameters, capability constraints, and priority lists, allowing the mobile device to simply query and follow the smart card's guidance rather than implementing complex selection algorithms itself.
3Measurement precision
If extensive system scanning is performed to select optimal radio access technology, then system selection accuracy is improved, but acquisition time increases
Solution Approach 1:
The patent pre-configures system selection parameters including priority lists and association rules in the smart card before the device needs to select a radio access technology. This preliminary action allows the device to quickly determine the optimal system by querying the pre-processed information rather than performing extensive real-time scanning, thus maintaining selection accuracy while reducing acquisition time.
Data Source
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AI summary
Multi-mode system selection (MMSS) enables a mobile station (MS) to prioritize MS preference for selecting particular radio air-interfaces (AI) across multiple standards (e.g., 3GPP, 3GPP2, WiMAX). 3GPP2 is developing a scheme MMSS-3GPP2 which is usually referred to as simply 'MMSS.' Other schemes exist e.g., proprietary ones (e.g., internal ePRL), an MMSS-3GPP based on the PLMN with Access Technologies of non-3GPP systems. MMSS OTASP messages and parameters are being defined in 3GPP2 to allow the carriers to provision MMSS parameters to the mobile device. With MMSS, the mobile can select and hence acquire cdma2000 and non-cdma2000 systems (e.g., LTE, WiMAX) based on carrier's preferences.