Multi-mode Mobile Station Network Acquisition via Topology
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Solution Overview
Problem
Multi-mode mobile stations face high power consumption during standby modes due to the need for periodic registration with multiple network services, such as 3G and WiMAX, which hinders quick restoration of network services and battery life.
Innovation Solution
Utilizing network topology information from one radio access technology (RAT) to assist in acquiring another RAT network, such as WiMAX based on 3G network topology, allowing for quick restoration of network services without the need for periodic scanning and registration, thereby reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multi-mode mobile stations maintain registration with multiple network services simultaneously, then network connectivity and service availability are improved, but power consumption increases due to periodic scanning and registration requirements
Solution Approach 1:
The system performs preliminary actions by storing network topology information and base station parameters in advance. When a network service is interrupted or deactivated, the mobile station can quickly restore connectivity by retrieving pre-stored information about alternative base stations and networks, avoiding the need for extensive periodic scanning and registration procedures.
Solution Approach 2:
The patent introduces an intermediary mechanism (concurrent service acquisition database) that stores topology information from one radio access technology to assist in acquiring another RAT network. This intermediary allows the mobile station to efficiently find and connect to alternative networks without direct periodic scanning of all possible networks, thereby reducing power consumption while maintaining connectivity.
2Reliability
If periodic scanning and registration are performed to maintain network service, then network service restoration is ensured, but time is lost due to the periodic nature of these operations
Solution Approach 1:
Network topology information and base station parameters are stored in advance in a concurrent service acquisition database. When service interruption occurs, the mobile station can immediately retrieve pre-configured information about alternative base stations and networks, enabling rapid service restoration without waiting for periodic scanning cycles to complete.
Solution Approach 2:
The system implements feedback mechanisms where the mobile station monitors network service status and, upon detecting interruption, quickly queries the stored topology information to identify and connect to alternative base stations. This feedback-driven approach enables rapid response to service interruptions, minimizing restoration time compared to passive periodic scanning.
Data Source
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AI summary
Methods and apparatus for using network topology and coverage information from one radio access technology (RAT) network to assist acquisition of another different RAT network for a multi-mode mobile station (MS), such as acquiring a WiMAX (Worldwide Interoperability for Microwave Access) network based on topology and coverage information about a 3G (Third Generation) network and vice versa, are provided. Base station (BS) acquisition assisted in this manner may provide for quick restoration of a previously interrupted or deactivated network service, while decreasing the power consumption of the multi-mode MS during a power savings state because periodic scanning and registration need not occur.