Management device and management method

Abstract

To appropriately make a calling terminal to start an incoming operation.SOLUTION: A management device comprises: a base station specific part that specifies a base station device that performs a communication with a terminal device; a position registration change request part that instructs a change of a position registration to a different base station device in the case where the base station device is in a predetermined condition to the terminal device; and a telephone conversation detection part that detects at least a termination of a telephone conversation of the terminal device. In the case where there is no vacancy of a communication channel of a first base station device specified, a second base station device with a vacancy in the communication channel while being adjacent to the first base station device is specified. In the case where the change of a position registration is instructed to the second base station device from the first base station to the terminal device, and the termination of the telephone conversation of the terminal device is detected, the position registration is instructed to a predetermined base station device to the terminal device from the second base station device.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present invention relates to a management device and a management method. [Background technology]

[0002] A technology is known that switches the base station to which a user registers depending on the communication conditions of the base station. For example, Patent Document 1 describes a method for searching for other base stations when a base station is busy. The document describes a mobile terminal that switches to a base station that can communicate with the mobile terminal and performs communication therewith. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 9-163428 Summary of the Invention [Problem to be solved by the invention]

[0004] In the technology described in the prior art document, when the calling terminal of the calling side starts a call, If the base station that has registered the called terminal is busy, the called terminal will not operate properly. may not be able to start.

[0005] The present invention relates to a management device and a management method for causing a call receiving terminal to appropriately start a call receiving operation. The present invention aims to provide a method. [Means for solving the problem]

[0006] The management device according to the present invention includes a base station identification unit that identifies a base station device that communicates with a terminal device. When a predetermined condition is satisfied, the base station device is located at a different base station device with respect to the terminal device. a location registration change request unit for instructing a change in the location registration of the terminal device; and a call detection unit for detecting a call of the identified first base station device. When there is no available channel, a base station adjacent to the first base station apparatus and having an available communication channel is a second base station device that is ... The base station device instructs the second base station device to change the location registration, and the call detection unit When the end of the call of the terminal device is detected, the location registration change request unit The terminal device is then instructed to register its location with a specific base station device.

[0007] The management method according to the present invention comprises the steps of: A base station device that communicates with the terminal device is identified, and a communication channel of the identified first base station device is established. When there is no available communication channel, a second base station adjacent to the first base station device and having an available communication channel is selected. a step of identifying a station device; and transmitting the signal from the first base station device to the second base station device to the terminal device. a step of instructing a base station device to change the location registration; and a step of at least ending the call of the terminal device. and when the end of the call of the terminal device is detected, the second base station device and instructing the terminal device to register its location with a predetermined base station device from the terminal device. nothing. Effect of the Invention

[0008] According to the present invention, it is possible to cause the called terminal to appropriately start an incoming call operation. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram illustrating an example of the configuration of a wireless communication system according to an embodiment. [Diagram 2]FIG. 2 is a diagram for explaining an outline of a communication method of the wireless communication system according to the embodiment. [Diagram 3] FIG. 3 is a sequence diagram showing a processing flow of the wireless communication system according to the embodiment. [Figure 4] FIG. 4 is a diagram for explaining the registration information. [Diagram 5] FIG. 5 is a diagram for explaining the base station information. [Figure 6] FIG. 6 is a diagram for explaining the registration information. [Figure 7] FIG. 7 is a block diagram illustrating an example of the configuration of a management device according to the embodiment. [Figure 8] FIG. 8 is a block diagram showing the configuration of a terminal device according to the embodiment. [Figure 9] FIG. 9 is a flowchart illustrating an example of a process flow of the management device according to the embodiment. [Figure 10] FIG. 10 is a diagram for explaining the location information. [Figure 11] FIG. 11 is a flowchart illustrating an example of a processing flow of the terminal device according to the embodiment. [Figure 12] FIG. 12 is a sequence diagram illustrating an example of a processing flow of the wireless communication system according to the first modified example of the embodiment. [Figure 13] FIG. 13 is a flowchart illustrating an example of a process flow of a management device according to a first modified example of the embodiment. [Figure 14] FIG. 14 is a sequence diagram illustrating an example of a processing flow of the wireless communication system according to the second modified example of the embodiment. [Figure 15] FIG. 15 is a flowchart illustrating an example of a process flow of a management device according to a second modified example of the embodiment. [Figure 16] FIG. 16 is a sequence diagram illustrating an example of a processing flow of a wireless communication system according to the third modified example of the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the embodiments.

[0011] [Embodiment] <Wireless communication system> A configuration of a wireless communication system according to an embodiment will be described with reference to FIG. FIG. 1 is a diagram illustrating an example of a configuration of a wireless communication system according to an embodiment.

[0012] As shown in FIG. 1, the wireless communication system 1 includes a management device 10, a base station device 12a, and a A base station device 12b, a base station device 12c, a terminal device 14a, a terminal device 14b, and a terminal device The base station device 12a, the base station device 12b, and the base station device 12c include The base station device 12 may be collectively referred to as a base station device. The terminal device 14b and the terminal device 14c may be collectively referred to as the terminal device 14 or the terminal device. In the embodiment, the number of base station devices 12 is described as three, but is not limited to this. The number of base station devices 12 may be more or less than three. In the following description, the number of terminal devices 14 is assumed to be three, but is not limited to this. The wireless communication system 1 may be, for example, a commercial wireless communication system. Examples of such systems include, but are not limited to,

[0013] The management device 10 and the base station device 12 communicate with each other via a wireless or wired network N. The management device 10 controls the base station device 12. 10 controls the base station device 12 to perform the communication between the terminal device 14a and the terminal device 14c. In this embodiment, the management device 10 controls various communications including voice communications. 2, the voice signal is transmitted from the other terminal device among the terminal device 14a and the terminal device 14c. The call receiving terminal that receives the call is caused to appropriately start a call receiving operation.

[0014] An overview of a communication method of the wireless communication system according to the embodiment will be described with reference to FIG. FIG. 2 is a diagram for explaining an outline of a communication method of the wireless communication system according to the embodiment. In FIG. 2, the management device 10 is omitted.

[0015] As shown in FIG. 2, the communication range of the base station device 12a is range Ra, and the communication range of the base station device 12b is range The communication range of the base station device 12c is assumed to be range Rb and the communication range of the base station device 12b is assumed to be range Rc. The common range with range Rb is range Rab, and the common range between range Rb and range Rc is range Rbc. The terminal device 14a is located within the range Ra. The terminal device 14b is located within the range The terminal device 14c is located within the range Rc. c is located within range Rbc, which is the overlapping region of range Rb and range Rc.

[0016] The base station device 12a, the base station device 12b, and the base station device 12c constitute a multi-site. In the wireless communication system 1, the management device 10 is configured to manage the base station device 12a and the base The station device 12b and the base station device 12c are configured to be controllable.

[0017] In FIG. 2, the terminal device 14a is registered with the base station device 12a. The terminal device 14c is registered with the base station device 12c. The terminal device 14a uses the base station device 12a to register its location with the terminal devices 14b and The terminal device 14b performs group communication with the base station device 12 and the terminal device 14c. b is used to execute group communication between the terminal device 14a and the terminal device 14c. The terminal device 14c communicates with the terminal device 14a and the terminal device 14b using the base station device 12c. Perform group communication between

[0018] [Processing of wireless communication system] A process flow of the wireless communication system according to the embodiment will be described with reference to FIG. 2 is a sequence diagram showing a processing flow of the wireless communication system according to the embodiment.

[0019] The terminal device 14a requests the base station device 12a for location registration, and the base station device 12a requests the terminal device 14a for location registration. The terminal device 14b registers its location in the base station device 12b (step S2). The base station device 12b applies for location registration of the terminal device 14b, and the base station device 12b performs location registration of the terminal device 14b (step S 4) The terminal device 14c requests the base station device 12c to register its location. The management device 10 performs location registration of the terminal device 14c (step S6). In response to a request, the base station detects and stores the terminal device that has registered its location with the base station. The position 12c assumes that all communication channels used for the call are in use, i.e., busy. In this case, the management device 10 detects that the base station device 12c is in a busy state (step S8). It is determined that:

[0020] FIG. 4 is a diagram for explaining the registration information. FIG. 4 shows steps S2 to S6. The registration information 26A of the base station device 12 registered in the terminal device 14 is shown by the above process. As shown in FIG. 4, the base station device 12a is registered in the terminal device 14a. The base station device 12b is registered in the terminal device 14b. The management device 10 stores the registration information 26A as shown in FIG. That is, the management device 10 stores the wireless communication system based on the registration information 26A. The base station device 12 to which each terminal device 14 in the system 1 is registered can be grasped. do.

[0021] FIG. 5 is a diagram for explaining the base station information. 5 shows base station information 26B relating to the communication channel of the base station device 12. In this case, the base station device 12a is informed that there is an available communication channel. 2b indicates that the communication channel is available. It is shown that there is no free channel. In other words, the base station device 12c is in a busy state. The management device 10 records the base station information 26B as shown in FIG. That is, the management device 10 determines whether the base station is The state of the communication channel of the base station device 12 included in the wireless communication system 1 can be grasped. do.

[0022] Returning to FIG. 3, the terminal device 14a transmits a call control request to the base station device 12a ( Step S10). That is, the terminal device 14a transmits a request to start group communication. The base station device 12a receives the call control request. The call control request of the terminal device 14a is received, and the terminal device 14c to be called is identified. The management device 10 identifies the base station device 12c that has registered the location of the terminal device 14c. The device 10 transmits a location registration change request to the base station device 12c to the terminal device 14c whose location is currently being registered. Instruct them to issue a command.

[0023] The base station device 12c transmits a location registration change request to the terminal device 14c (step S12 That is, since the base station device 12c is in a busy state, it does not send a call control request to the terminal device 14c. Since the terminal device 14c cannot transmit the location registration change request, the terminal device 14c transmits the location registration change request to the terminal device 14c. do.

[0024] The terminal device 14c registers its location with the base station device 12b (step S14). The base station device 14c performs location registration with the base station device 12b, which is an adjacent base station device of the base station device 12c. cormorant.

[0025] FIG. 6 is a diagram for explaining the registration information. FIG. 6 shows the registration information obtained by the process of step S14. The registration information 26Aa of the base station device 12 registered in the terminal device 14 is shown in FIG. In this way, the base station device 12a is registered in the terminal device 14a. In the terminal device 14c, the base station device 12b is registered. That is, the terminal device 14c receives the base station for location registration from the base station device 12c. The management device 10 changes the registration information 26Aa to the base station device 12b. I also remember.

[0026] Returning to FIG. 3, the base station device 12b transmits a call control request to the terminal device 14c (step In step S16, the terminal device 14c starts receiving signals from the base station device 12b in response to the call control request. In order to start a group call, the terminal device 14a transmits a voice signal to the base station device 12. The base station device 12a transmits the voice message received from the terminal device 14a to the terminal device 14a (step S18). The base station device 12b transmits the voice signal to the base station device 12b (step S20). The voice signal received from the device 12a is transmitted to the terminal device 14b and the terminal device 14c (step Through the processes from step S18 to step S22, group communication begins. In this case, the terminal device 14a is called a calling terminal, and the terminal devices 14b and The management device 10 detects the start of group communication. can be.

[0027] When group communication is to be initiated from terminal device 14b or terminal device 14c, steps The process is the reverse of steps S18 to S22.

[0028] The terminal device 14a, the terminal device 14b, and the terminal device 14c end the group call ( Step S24) In other words, the management device 10 detects the end of the group call.

[0029] The terminal device 14c registers its location with the base station device 12c (step S26). The terminal device 14c receives the group communication from the base station device 12b, whose registration has been changed during the group communication. The terminal then registers its location in the base station device 12c that was registered before the terminal started receiving data. The base station device 12 that was registered before the device 14 started group communication is designated as the first base station device. The base station device 12 whose location is changed and registered when group communication is started is called the second base station device. It is also called a base station device.

[0030] [Management device configuration] A configuration example of a management device according to an embodiment will be described with reference to FIG. 1 is a block diagram showing an example of the configuration of a management device according to the present invention;

[0031] As shown in FIG. 7, the management device 10 includes a communication unit 20, an operation unit 22, a display unit 24, and a storage unit. It comprises a memory unit 26 and a control unit 28.

[0032] The communication unit 20 communicates with an external device via a wireless or wired network. 20, for example, communicates with the base station device 12.

[0033] The operation unit 22 accepts various operations for the terminal device 14. For example, the operation unit 22 It accepts operations to start or end communication with other wireless communication devices, etc. The operation unit 22 may be, for example, a mouse, a keyboard, a button, a switch, a lever, a numeric keypad, or the like. -Includes touch panels, etc.

[0034] The display unit 24 displays various information. For example, the display unit 24 displays the status of the base station device 12. The display unit 24 displays information related to the above. Displays, including organic EL (Electro-Luminescence) displays, etc. The display unit 24 includes, for example, a light emitting diode (LED) or the like. The display unit 24 includes a touch panel or the like as the operation unit 22, and the operation unit 5 2 may be integrally configured.

[0035] The storage unit 26 is a memory that stores various information. The storage unit 26 stores information such as the calculation contents and programs of the program 8. Each terminal device 14 included in the system 1 registers its location with the base station device 12. The storage unit 26 stores, for example, Store information about the base station device 12 adjacent to the base station device 12 whose location is registered. The storage unit 26 stores, for example, the channels of the base station devices 12 included in the wireless communication system 1. The storage unit 26 stores information about the usage status of the wireless communication system 1. Among the base station devices 12 that are in a busy state, information about the base station devices 12 that are in a busy state is stored. The storage unit 26 is, for example, a RAM (Random Access Memory) and a ROM (Read Only Memory). ry) and external storage devices such as HDD (Hard Disk Drive). Contains at least one.

[0036] The control unit 28 controls the operation of each unit of the management device 10. The control unit 28 includes, for example, a CPU (Central Processing Unit) and MPU (Micro Processing Unit) The program stored in the memory 26 is executed using the RAM as a work area. The control unit 28 is implemented, for example, by an ASIC (Application Specific Integrated Circuit). This is realized by integrated circuits such as FPGAs (Field Programmable Gate Arrays) and The control unit 28 may be realized by a combination of hardware and software. stomach.

[0037] The control unit 28 includes a call information detection unit 30, a call target identification unit 32, and a base station identification unit. 34 (first base station identification unit 34a and second base station identification unit 34b), and a location registration change request unit The mobile station includes a location registration detection unit 36, a location registration detection unit 38, a call control unit 40, and a call detection unit 42.

[0038] The call information detection unit 30 detects call information from the terminal device 14 on the calling side. The call information detection unit 30 detects, for example, the start of a group call from the terminal device 14 on the calling side. Know.

[0039] The call target identification unit 32 identifies the call target of the call originating terminal device 14. The target identification unit 32 identifies a group based on, for example, call information from the terminal device 14 on the calling side. The called terminal device 14 that is the target of the loop call is identified.

[0040] The base station identification unit 34 identifies a base station device that communicates with the terminal device. The first base station identification unit 34a identifies the base station device 12 that has registered the location of the terminal device 14 as the first base station. The first base station identification unit 34a identifies the base station device as the call target identification unit 32, for example. The terminal device 14 identified by the above identifies the base station device 12 whose location has been registered as the first base station device. The first base station identification unit 34a determines whether the communication channel of the identified first base station device has an available channel. If there is an available communication channel in the first base station device, the first base station device The first base station device instructs the first base station device to issue a call control request to the terminal device 14. .

[0041] The second base station identification unit 34b of the base station identification unit 34 is different from the first base station device. The second base station identification unit 34b identifies a second base station device that has not registered its location. For example, if there is an available communication channel of the first base station device identified by the first base station identification unit 34a, If not, the base station 12 adjacent to the first base station device and having an available communication channel is selected. Identify it as a second base station device.

[0042] The location registration change request unit 36 ​​detects the second base station device identified by the second base station identification unit 34b. In this case, the first base station device sends the following to the terminal device 14 that has registered its location with the first base station device: A request for changing the location registration is transmitted to the second base station device. A change in location registration to a second base station device, which may be a temporary change instruction to the base station device. The instruction may be to maintain the

[0043] The location registration detection unit 38 detects whether the location registration change request unit 36 ​​has detected a change in the location registration. , and detects a location registration request from the terminal device 14.

[0044] The call control unit 40 detects the location registration application of the terminal device 14 by the location registration detection unit 38. When the terminal device 14 is notified, the second base station device issues a call control request to the terminal device 14. The second base station apparatus is instructed to do so.

[0045] The call detection unit 42 detects various types of calls between the terminal devices 14 included in the wireless communication system 1. The call detection unit 42 detects, for example, the start of a call between the terminal devices 14. The call detection unit 42 detects, for example, the end of a call between the terminal devices 14. For example, the end of a call between at least the terminal devices 14 may be detected.

[0046] [Terminal device configuration] A configuration example of a terminal device according to an embodiment will be described with reference to FIG. FIG. 2 is a block diagram showing a configuration of a terminal device according to the present invention.

[0047] As shown in FIG. 8, the terminal device 14 includes a communication unit 50, an operation unit 52, a microphone 54, and a switch. The device includes a speaker 56, a display unit 58, a position detection unit 60, a storage unit 62, and a control unit 64. The terminal device 14 is, for example, a portable wireless communication device, a smartphone, or a tablet terminal. These include, but are not limited to:

[0048] The communication unit 50 has a function of performing long-distance wireless communication. For example, APCO-P25 (Association of Public safety Communications Officia) Digital business freedom such as LS International Project 25) and NXDN (registered trademark) The long-distance wireless communication may be communication via a mobile phone network or the like.

[0049] The operation unit 52 accepts various operations for the terminal device 14. For example, the operation unit 52 , start or end group communication with other terminal devices 14. The operation unit 52 is, for example, a button, a switch, a lever, a numeric keypad, a touch panel, etc. It includes a touch panel, and a PTT (Push to Talk) button.

[0050] The microphone 54 picks up sounds around the terminal device 14. The microphone 120 picks up sounds from, for example, The microphone 54 picks up the user's voice and converts it into an electrical signal. The speaker 56 outputs various sounds. The speaker 56 outputs, as voice, a voice signal received from, for example, another terminal device 14 .

[0051] The display unit 58 displays various information. For example, the display unit 58 displays the status of the terminal device 14, The display unit 58 displays various information such as the status of communication and the like. The display unit 58 includes a display including a display or an organic EL display. For example, the display unit 58 includes a light-emitting unit such as an LED. The operation unit 52 may be integrally formed using the above.

[0052] The position detection unit 60 is a Global Navigation Satellite System (GNSS) (not shown). The position detection unit 60 receives a GNSS signal from a satellite. The position detection unit 60 outputs, for example, a GNS This can be realized with a GNSS receiver circuit or a GNSS receiver device.

[0053] The storage unit 62 is a memory that stores various information. The storage unit 62 stores information such as the calculation contents and programs of the terminal device 4. The storage unit 62 stores information about the base station device 12 whose location is registered by the base station device 14. For example, the base station device 12 adjacent to the base station device 12 in which the terminal device 14 has registered its location The storage unit 62 stores information related to the above. , and an external storage device such as a HDD.

[0054] The control unit 64 controls the operation of each unit of the terminal device 14. The control unit 64 includes, for example, a CPU A program stored in the memory unit 62 or the like is executed by the MPU or the like using the RAM or the like as a working area. The control unit 64 is implemented by executing the above-mentioned program. The control unit 64 may be realized by a combination of hardware and software. It may be realized by combining the above.

[0055] The control unit 64, for example, detects the position of the terminal device based on the GNSS signal received by the position detection unit 60. The control unit 64 calculates the current location of the terminal device 14 using a known method. The control unit 64 calculates the current position of the terminal device in earth coordinates. The mobile station 14 transmits location information regarding the current location of the mobile station 14 to the management device 10 .

[0056] [Management device processing] The process of the management device according to the embodiment will be described with reference to FIG. 10 is a flowchart showing an example of a process flow of the management device.

[0057] The call information detection unit 30 detects the call information (step S100). The call information detection unit 30 detects the call control request transmitted by the terminal device 14 on the calling side. Based on the call information, information indicating the start of a group call is detected. Proceed to S102.

[0058] The call target identification unit 32 identifies the terminal device 14 to be called (step S Specifically, the call target identification unit 32 identifies the call sent by the terminal device 14 on the calling side. Based on the call information, the called terminal device 14 to be called is identified. Proceed to step S104.

[0059] The first base station identification unit 34a identifies the first base station device (step S104). The base station identification unit 34a is configured to identify the terminal device 14 on the called side identified by the call target identification unit 32. The base station device 12 that has registered its location is identified. Specifically, the first base station identification unit 34a Based on the registration information 26A stored in the storage unit 26, the called terminal device 14 performs location registration. Then, the process proceeds to step S106.

[0060] The first base station identification unit 34a identifies the first base station in which the identified terminal device 14 of the called side has registered its location. It is determined whether the base station device is in a busy state (step S106). The unit 34a determines whether the first base station device has an available communication channel or not. The first base station determination unit 34a determines whether the base station device is in a busy state. If the first base station does not have an available communication channel, the first base station is set to busy. If it is determined that the first base station device is in a busy state (step If it is determined that the first base station device is not in a busy state, the process proceeds to step S108. If it has been determined that the setting has been made (Step S106; No), the process proceeds to Step S118.

[0061] If the result of the determination in step S106 is Yes, the second base station identification unit 34b The second base station identification unit 34b identifies the device in step S106 (step S108). The base station device 12 adjacent to the first base station device that is determined to be in a busy state is called the second base station device. The second base station identification unit 34b identifies the terminal device 14 as a station device. The second base station may be identified based on the

[0062] FIG. 10 is a diagram for explaining the location information. FIG. 10 shows the current location of each terminal device 14. The location information of each terminal device 14 is, for example, (latitude, longitude) The location information of the terminal device 14a can be expressed in earth coordinates as follows: (La1, Lo1) The location information of the terminal device 14b is, for example, (La2, Lo2). The location information of 4c is, for example, (La3, Lo3). Such location information 26C is stored in the storage unit 26. The location information of each terminal device 14 is, for example, For example, the second base station characteristic is transmitted from each terminal device 14 when registering its location with the base station device 12. The determining unit 34b identifies the second base station device based on, for example, the location information 26C. The base station identification unit 34b, for example, identifies the base station device 12 located closest to the current location as the second base station. In FIG. 10, the latitude and longitude are specified as (La1, Lo1) to (La3 , Lo3), but in reality, the latitude and longitude coordinates are expressed numerically. can be.

[0063] Returning to FIG. 9, after step S108, the second base station identification unit 34b The second base station identification unit 3 determines whether the station device is in a busy state (step S110). 4b refers to the base station information 26B and checks whether there is an available communication channel in the second base station device. Based on whether the second base station device is in a busy state, the second base station device judges whether the second base station device is in a busy state. If there is no available communication channel in the second base station device, the second base station identification unit 34b The second base station device is determined to be in a busy state. The second base station device is determined to be not in a busy state. If it is determined that the second base station device is a UE (step S110; No), the process proceeds to step S112. If it is determined that the device is busy (step S110; Yes), the process proceeds to step S126. move on.

[0064] If the result of the determination in step S110 is No, the location registration change request unit 36 Regarding an instruction to change the location registration to the terminal device 14 registered with the first base station device The location registration change request unit 36 ​​transmits the information to the first base station (step S112). The location registration of the terminal device 14 that has registered its location with the first base station device is changed from the device The information regarding the instruction is transmitted, and the process proceeds to step S114.

[0065] The location registration detection unit 38 determines whether or not a location registration request from the terminal device 14 has been detected. Specifically, the location registration detection unit 38 detects the second base station from the terminal device 14 (step S114). It is determined whether a location registration request to the base station device has been detected. If it is determined that the application has been detected (step S114; Yes), the process proceeds to step S116. If it is determined that the location registration request from the terminal device 14 has not been detected (step S114; No), proceed to step S130.

[0066] If the answer is Yes in step S114, the terminal device 14 is located in the second base station device. As a result, the call control unit 40 calls the terminal device 14 from the second base station device. Then, the process proceeds to step S118.

[0067] The call detection unit 42 detects the start of a call between the terminal devices 14 (step S118). The speech detection unit 42 detects a group based on, for example, a voice signal transmitted between the terminal devices 14. The start of a call, such as a telephone call, is detected, and the process proceeds to step S120.

[0068] The call detection unit 42 detects the end of the call between the terminal devices 14 (step S120). For example, when there is no longer any transmission or reception of a voice signal between the terminal devices 14, the conversation detection unit 42 Then, the process proceeds to step S122.

[0069] The location registration detection unit 38 judges whether the terminal device 14 has changed its location registration (step Specifically, when starting a call, the location registration detection unit 38 detects the location of the terminal device 14. The location registration unit 100 determines whether the location registration has been changed from the first base station device to the second base station device. If it is determined that the number of characters has been changed (step S122; Yes), the process proceeds to step S124. If it is determined that the location registration has not been changed (step S122; No), the process of FIG. 9 is ended. Complete.

[0070] If the result of the determination in step S122 is Yes, the location registration change request unit 36 4, information regarding an instruction to change location registration from the second base station device to the first base station device That is, the location registration change request unit 36 ​​transmits the information to the terminal device 1 (step S124). In step 4, the first base station device, which had been registered before the call was started, is caused to register its location. Processing of 9 is completed.

[0071] If the answer to step S110 is Yes, the location registration change request unit 36 ​​notifies the user that it will wait. The information is transmitted to the terminal device 14 (step S126). The unit 36 ​​allows the terminal device 14 to continue location registration with the first base station device that is in a busy state. Then, the process proceeds to step S128.

[0072] The control unit 28 determines whether or not a predetermined time has elapsed (step S128). The control unit 28 determines the time from when the terminal device 14 waits until a predetermined timeout occurs. If it is determined that the predetermined time has elapsed (step S12 8; Yes), the process of FIG. 9 is terminated. Step S128: No), and proceed to step S110.

[0073] If the result of the determination in step S114 is No, the control unit 28 determines whether or not a predetermined time has elapsed. Specifically, the control unit 28 notifies the terminal device 14 of the change in location registration (step S130). It is determined whether or not a predetermined time has elapsed since the instruction to change the setting is issued. If it is determined that the predetermined time has elapsed (step S130; Yes), the process of FIG. If it is determined that the predetermined time has not elapsed (step S130; No), the process ends. Proceed to step S114.

[0074] [Terminal device processing] A process flow of the terminal device according to the embodiment will be described with reference to FIG. 10 is a flowchart illustrating an example of a processing flow of a terminal device according to the embodiment.

[0075] The control unit 64 of the terminal device 14 performs location registration with the first base station device (step S200). Specifically, the control unit 64 controls the communication unit 50 to detect the base station device 12 located within the communication range. Then, the process proceeds to step S202.

[0076] The control unit 64 determines whether or not a request for changing the location registration has been received (step S20 2). Specifically, the control unit 64 receives a request from another terminal device 14 to start a group call, and The mobile station determines whether or not a request for changing the location registration has been received from the first base station apparatus, which is in the mobile state. If it is determined that a request for changing the location registration has been received (step S202; Yes), If it is determined that the request for changing the location registration has not been received (step S203), the process proceeds to step S204. If the answer is NO in step S202, the process proceeds to step S208.

[0077] If the determination in step S202 is Yes, the control unit 64 It is determined whether or not there is a station device (step S204). The second base station device 100 judges whether there is a second base station device with an available communication channel. If it is determined that there is a second base station device that can be used (step S204; Yes), If it is determined that there is no second base station device capable of location registration (step S204 ;No), proceed to step S216.

[0078] If the result of the determination in step S204 is Yes, the control unit 64 performs location registration on the second base station device. Specifically, the control unit 64 registers the second base through the communication unit 50 (step S206). The location is registered in the base station device, and the process proceeds to step S208.

[0079] The control unit 64 detects the start of a call (step S208). The start of a group call is detected based on a voice signal transmitted from the second base station device. Then, the process proceeds to step S210.

[0080] The control unit 64 detects the end of the call (step S210). When a voice signal is not received from the second base station device for a predetermined period of time, the end of the group call is detected. Then, the process proceeds to step S212.

[0081] The control unit 64 determines whether the location registration has been changed (step S212). When starting a call, the control unit 64 changes the registered base station device from the first base station device to the second base station device. If it is determined that the location registration has been changed to the second base station device (step Step S212: Yes) and proceed to step S214. It is determined that the location registration has not been changed. If so (step S212; No), the process of FIG. 11 ends.

[0082] If the result of the determination in step S212 is Yes, the control unit 64 performs location registration on the first base station device. Specifically, the control unit 64 registers the location of the mobile station 10 that was registered at the time of the call (step S214). The second base station performs location registration on the first base station that was previously registered before the call. Then, the process of FIG. 11 is terminated.

[0083] If the result of the determination in step S204 is No, the control unit 64 waits (step S21 6) Specifically, the control unit 64 waits while the location is registered in the first base station device. Then, the process proceeds to step S218.

[0084] The control unit 64 determines whether or not a predetermined time has elapsed (step S218). The control unit 64 waits while the location is registered in the first base station device, and then It is determined whether the time until the timeout has elapsed. If the result is "Yes" (step S218), the process of FIG. 11 is terminated. If it is determined that there is no such file (step S218; No), the process proceeds to step S216.

[0085] As described above, in this embodiment, when starting group communication, a base station device that is in a busy state The location registration change request is sent to the terminal device 14 that has registered its location in the location registration unit 12. The terminal device 14 that has received the request to change its location registration moves to the neighboring base station device 12 with which it has registered its location. The location is registered in the base station device 12 that has an available communication channel. The form is to perform an appropriate incoming call operation for the terminal device 14 on the receiving side during communication such as a group call. can be performed.

[0086] In this embodiment, when the group communication ends, the terminal device 14 whose location registration has been changed The base station device 12 to be registered is changed to the base station device 12 before the group communication is started. As a result, in this embodiment, the terminal device 14 can connect to the base station device 12 in a better radio environment. Location registration is possible.

[0087] [First modified example of processing in wireless communication system] The process of the wireless communication system according to the first modification of the embodiment will be described with reference to FIG. FIG. 12 shows an example of a process flow of the wireless communication system according to the first modification of the embodiment. FIG.

[0088] In the process according to the first modification of the embodiment shown in FIG. 12, a group call between terminal devices 14 is After the process is completed, the terminal device 14 that has changed its location registration with the base station device performs the process as follows: The processing of the wireless communication system according to the embodiment is different from that of the wireless communication system according to the embodiment.

[0089] As shown in FIG. 12, after step S24, the terminal device 14c maintains the location registration. Specifically, after the group communication ends, the terminal device 14c The base station device 12b that has registered its location during group communication without registering its location with the station device 12c Maintain location registration to

[0090] A process flow of the management device according to the first modification of the embodiment will be described with reference to FIG. FIG. 13 is a flowchart showing an example of a process flow of a management device according to a first modified example of an embodiment. In the process of FIG. 13, when the result of the determination in step S122 is Yes, the process of FIG. 9.

[0091] If the result of the determination in step S122 is Yes, the location registration change request unit 36 The location registration change request unit 36 ​​maintains the location registration in the device (step S132). When the end of the group call is detected, the terminal device 14 is requested to register with the second base station device. Then, the process of FIG. 13 ends.

[0092] As described above, in the first modification of the embodiment, when group communication ends, the location registration is changed. The base station device 12 that registers the location of the changed terminal device 14 is changed even after the group communication is ended. In this way, in the first modification of the embodiment, even when the communication channel is free, Since the location registration to the base station device 12 can be continued, group communication can be continued. In such a case, the incoming call operation can be appropriately performed.

[0093] [Second modified example of processing in wireless communication system] The process of the wireless communication system according to the second modification of the embodiment will be described with reference to FIG. FIG. 14 shows an example of a process flow of a wireless communication system according to a second modification of the embodiment. FIG.

[0094] In the process according to the second modification of the embodiment shown in FIG. 14, a group call between terminal devices 14 is After the process is completed, the terminal device 14 that has changed its location registration with the base station device performs the process as follows: The processing of the wireless communication system according to the embodiment is different from that of the wireless communication system according to the embodiment.

[0095] As shown in FIG. 14, after step S24, the terminal device 14c searches for a base station device. (Step S30). Specifically, after the group communication ends, the terminal device 14c starts a new The base station device 12 that is the suitable location registration destination is searched for.

[0096] A process flow of a management device according to a second modification of the embodiment will be described with reference to FIG. FIG. 15 is a flowchart showing an example of a process flow of a management device according to a second modified example of the embodiment. In the process of FIG. 15, when the result of the determination in step S122 is Yes, the process of FIG. 9.

[0097] If the result of the determination in step S122 is Yes, the second base station identification unit 34b The base station device is identified (step S134). Specifically, the second base station identification unit 34b For example, the current location of the terminal device 14 is determined based on the location information 26C stored in the storage unit 26. The base station device 12 closest to the base station 12 or the base station device 12 with the strongest radio wave intensity is set as the new second base station. That is, the second base station identification unit 34b identifies the base station with which communication is easier. The base station device 12 that satisfies the condition is identified as a new second base station device. Then, in step S13 Go to 6.

[0098] The second base station identification unit 34b is configured to determine whether there is a new second base station device with better communication conditions. Specifically, the second base station identification unit 34b determines whether the base station Based on the station information 26B, it is determined whether or not there is a new second base station device. If it is determined that there is a base station device (step S136; Yes), the process proceeds to step S138. If it is determined that there is no new second base station device (step S136; No), Proceed to step S140.

[0099] If the result of the determination in step S136 is Yes, the location registration change request unit 36 4, regarding an instruction to change the location registration from the second base station device to a new second base station device In other words, the location registration change request unit 36 ​​transmits the information to the terminal The device 14 registers the location of the new second base station device that has favorable conditions for communication. Then, the processing in FIG. 15 ends.

[0100] If the result of the determination in step S136 is No, the location registration change request unit 36 information regarding an instruction to change location registration from the second base station device to the first base station device, (Step S140). That is, the location registration change request unit 36 ​​transmits the The location of the first base station device, which had been registered before the call was started, is registered in the first base station device. In step S140, the registration change request unit 138 requests the terminal device 14 to register with the second base station device. Then, the process of FIG. 15 ends.

[0101] As described above, in the second modification of the embodiment, when group communication ends, further communication is performed. The second modification of the embodiment searches for a base station device 12 that is easier to use. If there is a base station device 12 that satisfies the above conditions, the base station device 12 is designated as a new second base station device. In this way, in the second modification of the embodiment, for example, When a group call was being made using the terminal device 14 while Therefore, the mobile station 10 can register its location with the base station device 12 that provides the best conditions for communication.

[0102] [Third modified example of processing in wireless communication system] The process of the wireless communication system according to the third modification of the embodiment will be described with reference to FIG. FIG. 16 shows an example of a process flow of a wireless communication system according to a third modification of the embodiment. FIG.

[0103] The process according to the third modification of the embodiment shown in FIG. 16 is performed by transmitting a signal from the first base station device to the second base station device. When the second base station device is busy when performing location registration in the second base station device, the terminal device 14 is made to wait. In this case, the process after step S18 is different from the process in FIG. become.

[0104] As shown in FIG. 16, after step S14, the base station device 12b sends a Specifically, the base station device 12b transmits a standby request to the busy Since the terminal device 14c is in the standby state, the terminal device 14c sends information on a standby instruction to the terminal device 14c in response to the location registration. The process then proceeds to step S34.

[0105] The terminal device 14c waits (step S34). In response to a request from the base station device 12c, the base station device 12 to which the location is registered does not change and waits. The terminal device 14c continues to perform step S until the location registration with the base station device 12b is completed. The process repeats steps S14 and S34, and then the process proceeds to step S36.

[0106] The terminal device 14c times out (step S36). c) If location registration to the base station device 12b is not possible for a predetermined time, The timeout occurs while the location registration to 12c is maintained. Then, the process of FIG. 16 ends. do.

[0107] In the process shown in FIG. 16, the terminal device 14c changes its location to the base station device 12 b directly receives standby supply, but the present invention is not limited to this. For example, in the present invention, Each base station device 12 periodically broadcasts base station information including the usage status of the communication channel. In this case, the terminal device 14c may transmit the broadcast signal from the base station device 12b. Based on the base station information transmitted by the cast transmission, the base station device 12b is found to be in a busy state. It is also possible to make a determination and wait.

[0108] As described above, in the third modified embodiment, the terminal device 1 is used for group communication or the like. When the base station device 12 to which the location registration is to be changed is changed to the base station device 12 to which the location registration is to be changed, When a busy state occurs, the terminal device 14 can be put on hold.

[0109] Although the embodiments of the present invention have been described above, the present invention is not limited to the contents of these embodiments. In addition, the above-mentioned components are not those that a person skilled in the art can easily imagine, and are not substantially different from the above-mentioned components. In addition, the above-mentioned components are appropriately Furthermore, the above-described embodiments may be combined without departing from the spirit of the present invention. Various omissions, substitutions or modifications of components may be made. [Explanation of symbols]

[0110] 1. Wireless communication systems 10 Management device 12 Base station equipment 14 Terminal Equipment 20,50 Communications Department 22,52 Operation unit 24,58 Display section 26,62 Storage part 28,64 Control section 30 Call information detection unit 32 Call target identification part 34 Base station identification section 34a 1st base station identification section 34b 2nd base station identification section 36 Location Registration Change Request Department 38 Location registration detection unit 40 Call control section 42 Call detection unit 54 Mike 56 Speaker 60 Position detection unit

Claims

1. A base station identification unit that identifies a base station device that communicates with the terminal device; When a predetermined condition is satisfied, the base station device may select a different base station device for the terminal device. a location registration change request unit for instructing a change in location registration; A call detection unit that detects at least the end of a call on the terminal device; Equipped with When the communication channel of the identified first base station device is not available, the base station identification unit: identifying a second base station device adjacent to the first base station device and having an available communication channel; The location registration change request unit transmits the location registration change request from the first base station device to the second base station device to the terminal device. Instruct the base station device to change the location registration, When the call detection unit detects the end of the call of the terminal device, the location registration change request The unit instructs the second base station device to register the location of the terminal device with a predetermined base station device. Indicate, Management device.

2. The predetermined base station device is the first base station device. The management device according to claim 1.

3. The predetermined base station device maintains the second base station device. The management device according to claim 1.

4. The terminal device has a position detection unit that detects its own position, The management device transmits a signal to the terminal device when the terminal device registers its location with a base station. A storage unit for storing location information relating to the own location, The predetermined base station device identifies the base station based on the location information of the terminal device in the storage unit. A new second base station device identified by the unit, The management device according to claim 1.

5. A base station device that communicates with the terminal device is identified, and a communication channel of the identified first base station device is When there is no vacant communication channel in the first base station device, a second base station device adjacent to the first base station device and having a vacant communication channel is selected. identifying a base station device; A change of location registration from the first base station device to the second base station device is made to the terminal device. indicating; detecting at least the end of a call on the terminal device; When the end of the call of the terminal device is detected, the second base station device instructing the mobile station to register its location with a predetermined base station device; (c) a method of administration;

Images