JP-7855888-B2 - Wireless communication device and wireless communication method

JP7855888B2JP 7855888 B2JP7855888 B2JP 7855888B2JP-7855888-B2

Inventors

白井渉

Assignees

株式会社ＪＶＣケンウッド

Dates

Publication Date: 20260511
Application Date: 20220323

Claims (2)

A first communication unit that communicates with a base station using a first wireless communication method, A second communication unit that communicates with other wireless communication devices using a second wireless communication method, The first communication unit measures the received signal strength value of the radio waves received from the first base station, and A base station search unit controls the first communication unit to search for a new base station to connect to based on the received radio wave strength value, A communication control unit that controls the first communication unit and the second communication unit, A mode setting unit that selectively sets a first mode and a second mode different from the first mode, Equipped with, When the mode setting unit is set to the first mode, The base station search unit searches for a new base station to connect to when the received radio wave strength value falls below a preset first threshold. When the communication control unit receives information from another wireless communication device via the second communication unit that has been received with a received radio wave intensity greater than or equal to a preset second threshold greater than the first threshold, it switches the base station to which it connects from the first base station to the second base station. When the mode setting unit is set to the second mode, The base station search unit searches for a new base station to connect to when the received radio wave intensity value falls below a preset third threshold which is equal to or greater than the second threshold. The communication control unit designates the base station found by the base station search unit as the second base station and transmits information about the second base station via the second communication unit. Wireless communication device.
The first communication unit communicates with the base station using the first wireless communication method, The second communication unit communicates with other wireless communication devices using the second wireless communication method, A step of measuring the received signal strength value of the radio waves received from the first base station, The steps include controlling the first communication unit based on the received radio wave strength value to search for a new base station to connect to, The steps include controlling the first communication unit and the second communication unit, A step of selectively setting a first mode and a second mode different from the aforementioned first mode, When set to the first mode, If the received radio wave strength value falls below a preset first threshold, the step is to search for a new base station to connect to, When information from a second base station is received via the second communication unit from another wireless communication device with a received radio wave intensity greater than or equal to a preset second threshold which is greater than the first threshold, A step of switching the base station to connect from the first base station to the second base station, When set to the second mode, If the received radio wave strength value falls below a preset third threshold that is equal to or greater than the second threshold, the step of searching for a new base station to connect to, The step of searching for the base station includes the step of designating the base station found as the second base station and transmitting information about the second base station using the second communication unit, Wireless communication methods, including those mentioned above.

Description

This invention relates to a wireless communication device and a wireless communication method. Technologies for controlling the connection between wireless communication devices and base stations are known. For example, Patent Document 1 describes a technology that can shorten the search time of a base station. Japanese Patent Publication No. 2010-245813 Figure 1 shows an example of the configuration of a wireless communication system according to the first embodiment.Figure 2 is a block diagram showing an example configuration of a wireless communication device according to the first embodiment.Figure 3 is a sequence diagram showing the processing flow of the wireless communication system according to the embodiment.Figure 4 is a diagram illustrating a method for changing the RSSI value threshold from a reference threshold to a first threshold according to the embodiment.Figure 5 is a diagram illustrating a method for setting a second threshold value for the RSSI value according to the embodiment.Figure 6 is a diagram illustrating a method for setting the third threshold value of the RSSI value according to the embodiment.Figure 7 is a flowchart showing the processing flow of the wireless communication device according to the embodiment.Figure 8 is a flowchart showing the processing flow of a wireless communication device according to an embodiment of this invention. The embodiments of the present invention will be described in detail below with reference to the attached drawings. Note that the present invention is not limited by these embodiments, and in the following embodiments, the same parts are denoted by the same reference numerals to omit redundant explanations. [First Embodiment] (Wireless communication system) An example of the configuration of a wireless communication system according to the first embodiment will be described using Figure 1. Figure 1 is a diagram showing an example of the configuration of a wireless communication system according to the first embodiment. As shown in Figure 1, the wireless communication system 1 includes wireless communication device 10-1 and wireless communication device 10-2. Wireless communication device 10-1 and wireless communication device 10-2 are communicated via a network N. When there is no need to distinguish between wireless communication device 10-1 and wireless communication device 10-2, they may be collectively referred to as wireless communication device 10. Wireless communication device 10-1 is connected to the first base station. Wireless communication device 10-2 is connected to the second base station, which includes the first base station. Wireless communication device 10-1 is configured to change the connected base station from the first base station to the second base station based on first received signal strength information, which includes information about the first base station and the first received signal strength of the radio waves received from the first base station, and second received signal strength information, which includes information about the second base station received from wireless communication device 10-2 and the second received signal strength of the radio waves received from the second base station. The base station information includes, for example, information about the frequency and identifier used by the base station. The wireless communication devices 10-1 and 10-2 are, for example, commercial wireless communication devices, but are not limited to these. One of the wireless communication devices 10-1 and 10-2 may be an in-vehicle unit, and the other a handheld wireless communication device. The wireless communication devices 10-1 and 10-2 may be owned by the same user or by different users. It is preferable that the wireless communication devices 10-1 and 10-2 are located in close proximity and that the environment for measuring the received signal strength of the radio waves received from the base station is the same. (Wireless communication device) A wireless communication device according to the first embodiment will be described using Figure 2. Figure 2 is a block diagram showing an example of the configuration of a wireless communication device according to the first embodiment. As shown in Figure 2, the wireless communication device 10 comprises a first communication unit 12, a second communication unit 14, an operation unit 16, a display unit 18, an audio output unit 20, a storage unit 22, a GNSS (Global Navigation Satellite System) 24, and a control unit 26. The first communication unit 12 communicates with the base station using a long-range wireless communication system. This long-range wireless communication system is a type of first wireless communication system. Examples of long-range wireless communication systems include digital business radio systems such as APCO-P25 (Association of Public Safety Communications Officials International Project 25) and NXDN (registered trademark). The long-range