Mobile Device Network Search Using Location-Based RF Signal Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional mobile devices face challenges in quickly establishing communication with wireless cellular networks when location data is unknown, leading to prolonged search times, especially in situations like indoor use or airplane mode.
Innovation Solution
A mobile device records and stores network information from various locations, using RF signals to determine an approximate location and narrow the search for available wireless cellular networks, thereby reducing the search time by matching current location with pre-stored data and prioritizing networks based on signal strength and proximity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the device performs a comprehensive search for wireless cellular networks when location is unknown, then the device can find available networks, but the search time is prolonged
Solution Approach 1:
The device performs preliminary actions by establishing communication with wireless cellular networks at particular locations before needing network connection, records the locations and network information associated with these networks. This pre-collected data is stored and later used to narrow the search when the device becomes active again, resolving the contradiction between comprehensive search reliability and search time by having information ready in advance
Solution Approach 2:
The system pre-determines approximate locations using RF receivers that continuously receive broadcast radio signals and determine approximate device location based on known transmitter locations. This preliminary location determination is performed before network search is needed, allowing the device to quickly identify which pre-recorded networks to search for when activated, thus reducing search time while maintaining connection reliability
2Reliability
If the device searches all potentially available wireless cellular networks, then the device ensures finding an available network, but the search process becomes slower
Solution Approach 1:
The system applies local quality by using stored network information associated with specific locations to narrow the search to only those networks relevant to the current approximate location. Instead of uniformly searching all potentially available networks everywhere, the device tailors the search to local conditions by matching current location with pre-stored location data, thus improving search efficiency while ensuring reliability by focusing on locally appropriate networks
Solution Approach 2:
The device performs preliminary actions by pre-establishing communication with networks at various locations and recording this information before it is needed. When the device needs to connect to a network, it retrieves pre-stored network information for the current location rather than discovering networks in real-time, significantly improving search efficiency while maintaining reliability through pre-validated network connections
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach significantly reduces the time required to establish communication with a wireless cellular network by using stored location data and signal strength metrics to prioritize network searches, enhancing connectivity efficiency.
Implementation Method 1
An RF receiver on a mobile device can receive a broadcast radio signal from a transmitter and use the signal to determine an approximate location of the device based on a known location of the transmitter
Data Source
AI summary
A mobile device establishes communication with a number of wireless cellular networks at particular locations and records the locations and network information associated with the wireless cellular networks. The network information can be used to narrow a search for an available wireless cellular network from a plurality of potentially available wireless cellular networks when the mobile device is operating at a stored location. In one aspect, a Radio Frequency (RF) receiver on a mobile device can receive a broadcast radio signal from a transmitter and use the signal to determine an approximate location of the device based on a known location of the transmitter. A match between the approximate device location and wireless cellular network transmitters in communication range of the mobile device can be used to narrow a search for wireless cellular networks.