JPWO2023112228A5

JPWO2023112228A5 -

Info

Publication number: JPWO2023112228A5
Application number: JP2022536836A
Authority: JP
Filing date: 2021-12-15
Publication date: 2023-11-15
Anticipated expiration: 2041-12-15

Claims

Equipped with multiple communication terminals including a base unit, multiple slave units, and multiple data terminals, forming a wireless network,
The child device is connected to the parent device or another child device to form a tree-type network topology with the parent device as a root node,
The data terminal is connected to the base unit or the slave unit,
Among the plurality of communication terminals, the communication terminal executes a connection process to determine a connection destination of another communication terminal ,
An application for connection to one of the communication terminals that is a connection source among the base unit and a plurality of slave units is received from the slave unit, and the connection destination of the requested slave unit is determined from the connection source. determining the communication terminal;
After there are no more handsets applying for connection, an application for connection to the communication terminal that is the connection source is accepted from the data terminal, and the connection destination of the data terminal for which the application was made is changed to the communication terminal that is the connection source. Determine wireless communication system.

Equipped with multiple communication terminals including a base unit, multiple slave units, and multiple data terminals, forming a wireless network,
The child device is connected to the parent device or another child device to form a tree-type network topology with the parent device as a root node,
The data terminal is connected to the base unit or the slave unit,
Among the plurality of communication terminals, the communication terminal executes a connection process to determine a connection destination of another communication terminal,
After determining the slave device to be connected to one of the communication terminals that is a connection source among the base device and the plurality of slave devices, the data terminal to be connected to the communication terminal that is the connection source is determined. ,
When determining the connection destination of the handset, the handset, which has the communication terminal as the connection source as a connection destination candidate, is divided into a plurality of groups, and applications from the handset are accepted for each group. , a wireless communication system that determines a connection destination for the handset that has been applied for .

The wireless communication system according to claim 2 ,
The handset and the data terminal are
measuring the radio field strength of signals from the surrounding communication terminals, and performing a search operation to determine the communication terminal as a connection destination candidate based on the measured radio field strength;
A wireless communication system that applies for connection to the communication terminal of the connection destination candidate.

The wireless communication system according to claim 3 ,
In the connection process, the communication terminal that executes the connection process divides the handset, which has the communication terminal as the connection source as the connection destination candidate, into a plurality of groups based on the radio field strength, and A wireless communication system that accepts connection applications from the handsets in order of the group having the highest radio field strength.

The wireless communication system according to claim 4 ,
In the connection process,
The communication terminal that is the connection source transmits a recruitment command that limits the target slave devices and the data terminals,
The child device and the data terminal that have received the recruitment command and are limited by the recruitment command apply for connection;
In the wireless communication system, the recruiting command divides the handsets into a plurality of groups based on the radio field strength by limiting the target handsets based on the radio field strength.

The wireless communication system according to claim 4 or 5 ,
In the connection process, the communication terminal that executes the connection process determines the connection destination of the handset belonging to one of the groups until accepting a connection application from the handset belonging to the next group. In the meantime, the wireless communication system causes the unconnected handset to execute the search operation again.

The wireless communication system according to any one of claims 1 to 6 ,
In the wireless communication system, the communication terminal that executes the connection process executes the connection process with respect to the switched communication terminal that is the connection source while switching the communication terminal that is the connection source.

The wireless communication system according to claim 7 ,
Each of the base device and the child device whose connection destination has been determined is assigned one of the time slots in a communication schedule including a plurality of time slots,
The base device collects data held by the data terminal from the data terminal connected to the base device or the slave device assigned to the time slot that arrives according to the communication schedule.

The wireless communication system according to claim 8 ,
The base device executes the connection process by using the base device or the child device assigned to the time slot that arrives according to the communication schedule as the connection source communication terminal.

The wireless communication system according to any one of claims 1 to 9 ,
The data terminal has a sensor section that detects a predetermined physical quantity, and the wireless communication system holds the physical quantity detected by the sensor section as data.