Wireless Terminal Base Station Selection via Location ID
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Solution Overview
Problem
Existing methods for wireless terminal devices to select a base station based on received field strength are inefficient due to dependence on complex radio propagation environments, leading to unexpected base station selection and increased costs, especially when GPS is not available, and require extensive database updates.
Innovation Solution
Implementing a method where ID transmitters within the communication range of a wireless base station transmit location ID information via near-field wireless communication, allowing the wireless terminal device to determine the connection destination base station using this information, reducing the need for extensive databases and GPS functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a wireless terminal device selects a base station based on received field strength, then the device can connect to available base stations, but the selection may be unexpected by system designers and connection requests may concentrate in certain base stations
Solution Approach 1:
Location ID information is transmitted in advance by ID transmitters at base station locations. The wireless terminal device receives this information before making a selection decision, allowing predetermined location-based assignment rather than reactive field-strength-based selection. This preliminary action prevents unexpected selections and concentrates traffic predictably.
2Measurement precision
If a wireless terminal device checks quality of all usable radio channels to detect an optimum base station, then the selection accuracy is improved, but the time until base station selection is prolonged
Solution Approach 1:
The patent extracts the location identification function from complex radio channel quality measurement. Instead of measuring and comparing multiple radio channels, the device simply receives location ID information from ID transmitters, which directly identifies the optimal base station. This extraction eliminates time-consuming measurements while maintaining selection accuracy.
3Productivity
If a wireless terminal device incorporates a GPS receiver and database to select base stations, then the selection speed is improved and unexpected selections are reduced, but the device cost increases
Solution Approach 1:
The patent replaces expensive GPS receivers and databases with simple, inexpensive ID transmitters that broadcast location information. The terminal device only needs basic reception capability to receive location ID information, eliminating the need for costly GPS hardware and large databases while achieving the same location-based selection function.
4Productivity
If a wireless terminal device uses near field communication to receive location ID information, then the base station search processing is sped up and device cost is lowered, but the method requires ID transmitters to be provided in the communication range of base stations
Solution Approach 1:
The patent introduces ID transmitters as intermediary devices that mediate between base stations and terminal devices. These intermediaries broadcast location information that terminal devices can easily receive via near-field communication, simplifying the selection process while the added system element (ID transmitter) is a simple, low-complexity component.
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 speeds up base station search and switch processing, lowers device costs, and simplifies coverage design and changes by minimizing the impact of radio propagation environments and eliminating the need for GPS, while ensuring expected base station selection.
Implementation Method 1
causing a plurality of ID transmitters provided in a communication range of a wireless base station to transmit location ID information for identifying an installation location of the ID transmitter by a near field wireless communication scheme
Data Source
AI summary
A base station selecting method of this invention includes the steps of causing each of a plurality of ID transmitters (102) provided in the communication range of a wireless base station (103) to transmit location ID information for identifying the installation location of the ID transmitter (102) by a near field wireless communication scheme, and when a wireless terminal device (101) has received the location ID information, determining a connection destination wireless base station (103) based on the received location ID information. This makes it possible to speed up search processing and switch processing of the wireless base station (103) while suppressing an increase in the cost of the wireless terminal device (101) and also facilitate coverage design and coverage change of the wireless base station (103).