JP2012010115A - Radio communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a radio communication system capable of efficiently performing data communication while maintaining a control processing which prioritizes a voice communication in principle.SOLUTION: In the radio communication system, if a voice conversation request is generated from a base station to a mobile station, whether or not data communication is being performed between the base station and the mobile station is determined, if the data communication is determined to be being performed, a remaining time period before the data communication completes is calculated, if the remaining time period is not more than a predetermined time period, the voice conversation requester is notified that he/she should stand by and that the voice conversation can be started after the data communication completes, and if the remaining time period exceeds the predetermined time period, the data communication is interrupted and the voice conversation requester is notified that the voice conversation can be started.

Description

  The present invention relates to a control process in a case where a voice call request is made during data communication such as a command message from a fire department headquarters to a mobile station in a wireless communication system concerning fire fighting.

  As shown in FIG. 5, a conventional wireless communication system related to firefighting includes a firefighting headquarters base station (hereinafter referred to as base station) 10 and at least one mobile station 11 (in FIG. 5, three mobile stations 11 a to 11 c). Wireless communication with each other. The base station 10 receives the 119 report and manages a command stand device 13 for controlling to issue a communication command to the mobile station, etc., and manages cases in the firefighting jurisdiction due to a fire or an emergency earthquake, etc. An automatic dispatching device 14 for transmitting to the mobile station, an AVM dynamic management device 15 for managing the position and state of a mobile station by an AVM (Automatic Vehicle Monitoring) system by data transmission / reception by digital radio, and a radio for controlling voice communication by digital radio The control table device 16 and a wireless device 18 responsible for wireless communication with the mobile station 11 are configured. The mobile station 11 has a wireless device for performing wireless communication with the base station, and a signal processing device for processing signals transmitted and received by digital wireless. In FIG. 5, the solid line represents the data communication line, and the broken line represents the voice communication line.

  In the configuration as described above, communication is performed between the base station 10 and the mobile station 11 in one of the communication modes of voice communication or data communication. For example, when there is a voice call request during data transmission from the base station 10 to the mobile station 11, the data transmission is interrupted because the voice communication is always prioritized because of importance. Switched to voice communication.

Although the fields are different, Patent Documents 1 and 2 are cited as documents relating to how to control the priority between the voice communication mode and the data communication mode.
In the mobile terminal described in Patent Document 1, when a voice call is received during data communication in a conventional mobile terminal, if any one of the predetermined modes is set, the mobile terminal is predetermined regardless of the type of the data communication. The problem is that depending on the type of data communication, the processing is not necessarily appropriate due to the fact that only the processing in the communication mode is performed. When a voice call is received during data communication, An object of the present invention is to provide a mobile terminal capable of different processing depending on the type of data communication.

When the mobile communication terminal described in Patent Document 2 receives a voice call while receiving data, it is not sufficient for the user's request to simply switch the voice communication transition function or the voice call notification function depending on the type of data communication. As a problem, the user can select either “1. Voice communication priority” or “2. Data communication priority” and store the priority data communication partner information at the start of data communication. If the communication partner is a partner registered in the priority data communication information, a function for temporarily changing the priority mode setting information to the “data communication priority mode” is provided.
JP 2002-64867 A JP 2005-86464 A

  In the conventional wireless communication system shown in FIG. 5, when a voice call is requested during data transmission, the data transmission is interrupted and switched to voice communication. There is a problem that data communication may not be completed by continuing to give priority to voice calls.

  In order to solve this problem, a method of prescribing and controlling the case of giving priority to data communication over voice communication as in Patent Document 1 or 2 can be considered. Since voice communication is given priority in principle because of the importance of voice communication, there is a circumstance that the communication control method as described in Patent Document 1 or 2 cannot be simply adopted.

  The present invention has been made in view of the above problems, and provides a wireless communication system capable of efficiently performing data communication while maintaining a control process of giving priority to voice communication. It is the purpose.

  Claim 1 of the present invention is a wireless communication system comprising a base station and at least one or more mobile stations that communicate with the base station in a communication mode of either voice communication or data communication. The base station includes communication command means for issuing the communication command to the mobile station, and line control means for controlling communication between the base station and the mobile station, wherein the line control means includes the communication When a voice communication request is issued from the command means to the mobile station, it is determined whether or not data communication is being executed with the mobile station. If it is determined that data communication is being executed, the data communication is completed. When the remaining time is within a predetermined time set in advance, the communication command means is notified that the voice communication is to be waited and the data communication is completed after the data communication is completed. That the voice communication can be started, and if the remaining time is greater than a predetermined time set in advance, the voice communication can be started to the communication command means after the data communication is interrupted. The wireless communication system is characterized by notifying.

  Claim 2 of the present invention is a wireless communication system comprising a base station and at least one or more mobile stations that communicate with the base station in any one of voice communication and data communication modes. The base station includes communication command means for issuing the communication command to the mobile station, and line control means for controlling communication between the base station and the mobile station, wherein the line control means includes the communication When a voice communication request is issued from the command means to the mobile station, it is determined whether or not data communication is being performed with the mobile station. If it is determined that data communication is being performed, the content of the data communication is determined. Is determined in advance, and if it is determined that the importance of the contents of the data communication is high, priority is given to the data communication being executed, and the communication command means Voice communication If it is determined that the degree of importance is low, the remaining time until the data communication is completed is calculated, and if the remaining time is within a predetermined time set in advance, the communication command means Notifying that the voice communication is to be waited and notifying that the voice communication can be started after the data communication is completed, and interrupting the data communication when the remaining time is longer than a predetermined time set in advance. Then, the wireless communication system is configured to notify the communication command means that the voice communication can be started.

  According to a third aspect of the present invention, there is provided a wireless communication system comprising a base station and at least one or more mobile stations that communicate with the base station in any one of voice communication and data communication modes. The base station includes communication command means for issuing the communication command to the mobile station, and line control means for controlling communication between the base station and the mobile station, wherein the line control means includes the communication When a voice communication request is issued from the command means to the mobile station, it is determined whether or not data communication is being performed with the mobile station. If it is determined that data communication is being performed, the content of the data communication is determined. Is one of the three levels of importance set in advance, and if it is determined that the importance of the contents of the data communication is the highest, priority is given to the data communication being executed, and the communication command means Voice communication When it is determined that the importance is the second highest, the remaining time until the data communication is completed is calculated. When the remaining time is within a predetermined time set in advance, Notifying the communication command means that the voice communication is to be waited and notifying that the voice communication can be started after the completion of the data communication, and if the remaining time is greater than a predetermined time set in advance After interrupting the data communication, the communication command means is notified that the voice communication can be started, and when it is determined that the importance is the least important, the data communication being executed is interrupted. The wireless communication system is configured to notify the communication command means that voice communication can be started.

  According to the first aspect of the present invention, since a predetermined time (for example, 5 seconds) set in advance is used as a threshold value, a process for giving priority to completion of data communication or immediately switching to voice communication is selected. Data communication could not be completed due to a short interruption, but if data communication can be completed in a short waiting time, data communication can be completed before switching to voice communication. Therefore, the operation efficiency of communication is increased by reducing the number of retransmission processes due to the interruption of data communication while maintaining the principle of voice communication priority.

  According to the second aspect of the present invention, it is important to prioritize the data communication mode when data of high importance is set in advance in two stages of importance for each content of data to be transmitted. Data communication is not interrupted.

  According to the third aspect of the present invention, when the data of the data to be transmitted is set to three levels of importance in advance, and the data having the lowest importance is transmitted, the voice communication is given the highest priority. Command communication by voice from the base station can be performed quickly.

1 is a block diagram schematically showing a wireless communication system of the present invention. 3 is a flowchart showing a processing flow in a line control device 17 in the first embodiment. 10 is a flowchart illustrating a flow of processing in the line control device 17 according to the second embodiment. It is a chart showing an example of the importance for every content of data. It is the block diagram which represented the conventional radio | wireless communications system typically.

  The present invention is a wireless communication system comprising a base station and at least one or more mobile stations that communicate with the base station in a communication mode of either voice communication or data communication. Communication command means for performing the communication command to the mobile station, and line control means for controlling communication between the base station and the mobile station, the line control means from the communication command means When a voice communication request to the mobile station is generated, it is determined whether or not data communication is being performed with the mobile station. If it is determined that data communication is being performed, the remaining data communication is completed. When the remaining time is within a predetermined time set in advance, the communication command means is notified that the voice communication is to be waited, and the voice communication is performed after the data communication is completed. Notifying that the voice communication can be started, and if the remaining time is larger than a predetermined time set in advance, interrupting the data communication and notifying the communication command means that the voice communication can be started. Is a wireless communication system.

A wireless communication system according to the present invention will be described with reference to the drawings. FIG. 1 is a block diagram schematically showing a wireless communication system according to the present invention. A headquarter base station (hereinafter referred to as a base station) 10 and at least one mobile station 11 (in FIG. 1, 3 Wireless communication is performed between the two mobile stations 11a to 11c). The base station 10 manages a case in the fire control jurisdiction due to a fire or emergency, etc., as well as a command stand device 13 as a communication command means for controlling to issue a communication command to a mobile station or the like by receiving a 119 report. An automatic dispatch device 14 for transmitting information to the mobile station, an AVM dynamic management device 15 for managing the position and state of the mobile station by an AVM (Automatic Vehicle Monitoring) system by digital data transmission and reception, and voice communication by digital radio Between the mobile station 11 and a line control device 17 as a line control means for controlling voice communication or data communication performed between the wireless control base device 16 that controls the mobile station and the mobile station requested by each of these devices The wireless device 18 is responsible for wireless communication. In FIG. 1, a solid line represents a data communication line, a broken line represents a voice communication line, and a double line represents a data voice sharing line.
The mobile station 11 has a wireless device for performing wireless communication with the base station 10 and a signal processing device for processing signals transmitted and received by digital wireless.

  Between the base station 10 and the mobile station 11, transmission and reception of voice and data by digital radio are performed whenever necessary. The base station 10 periodically acquires dynamic information and position information transmitted from the mobile station 11 by data by digital radio, and manages the plurality of mobile stations 11 by the AVM dynamic management device 15. In addition, the mobile station 11 receives a command instruction from the base station 10 by digital radio by voice or data, processes and displays the acquired information by a signal processing device, and performs fire fighting and emergency activities. When a disaster or emergency occurs due to the reception of the 119 call, the base station 10 forms a formation of the mobile station 11 according to the disaster situation based on the mobile station information managed by the AVM dynamic management device 15, and requests the dispatch. I do. Disaster information is transmitted by voice or data by digital radio to the mobile station 11 selected for formation. The mobile station 11 in a disaster activity always transmits the dynamic information and the position information to the base station 10 by digital radio and exchanges information by voice as necessary. The base station 10 grasps the disaster activity status and determines whether an optimal action is being performed.

  More specifically, the present invention provides a range in which voice communication is given priority to voice communication and data communication performed between the base station 10 and the mobile station 11 by the line control device 17, but the voice communication is not uncomfortable in principle. Thus, control is performed so that data communication can be performed satisfactorily. Data communication is performed to the mobile station 11 from the command board device 13, the automatic dispatch device 14, and the AVM activity management device 15 of the base station 10, and the line control device 17 performs the command while grasping the data communication status. When a voice call request is received from the base device 13, the following processing is performed.

  FIG. 2 is a flowchart showing the flow of processing in the line control device 17. First, when a signal is transmitted by a button pressing operation (hereinafter referred to as press-on) for starting a voice call in the command board device 13 of the base station 10, this is received by the line control device 17 (S201). The line control device 17 that has received the press-on checks whether or not the command station device 13 is currently performing data communication with the mobile station 11 that is going to talk (S202). Notifies the command board device 13 that a voice call is possible (S207). If data communication is currently being performed, the process proceeds to (S203).

  In (S203), a time required until the current data communication being transmitted to the mobile station 11 is completed is calculated. Then, it is determined whether or not the data communication can be completed within a predetermined time set in advance, for example, within the remaining 5 seconds (S204). When the data communication is completed within 5 seconds, the command board 13 is notified that the data communication is completed (S205), and after the data communication is completed (S206), the voice communication is possible. The command board device 13 is notified (S208). If the data communication cannot be completed within 5 seconds, the data communication is interrupted (S207), and the command board device 13 is notified that the voice call is immediately possible (S208). Since the interval from when the command stand device 13 is pressed on until the voice call is possible varies depending on the status of data communication, when notifying the possibility of a call, a method of visually notifying the screen by LED or LCD, By adopting an aural notification method or the like, the members of the command board device 13 can be easily recognized.

  The remaining time until the completion of data communication can be calculated from the remaining data amount that has not yet been transmitted. For example, in packet communication, the remaining time is calculated based on the current number of transmitted packets with respect to the total number of packets. The setting time of 5 seconds is merely an example and can be set as appropriate.

  As described above, when there is a voice call request during data communication, the time until data communication is completed is calculated. If data communication is completed within a predetermined time, for example, 5 seconds, data communication is continued. And then switch to voice communication. In this way, if the waiting time is short, the data communication can be completed and the voice communication can be shifted without giving a sense of incongruity to the members who are responding at the command board device 13. When a time longer than 5 seconds is required, the voice communication is prioritized as usual, and the data communication is interrupted to shift to the voice communication. After the voice communication ends, the interrupted data is retransmitted. By performing such processing, conventionally, data communication could not be completed due to a short interruption, but when data communication can be completed in a short waiting time, switch to voice communication. Since the data communication can be completed before, the operation efficiency of the communication is increased by reducing the number of retransmission processes due to the interruption of the data communication while maintaining the principle of the voice communication priority.

  In the first embodiment, when there is a voice call request during data communication, the process is controlled to be switched based on the time until the completion of the data communication. A control method in which processing is switched according to the importance of data will be described with reference to FIG. The overall configuration is the same as that in FIG. 1 in the first embodiment, and the processing in the line control device 17 is different.

  FIG. 3 is a flowchart showing the flow of processing in the line control device 17 according to the second embodiment. First, when a signal is transmitted by a button pressing operation (hereinafter referred to as press-on) for starting a voice call in the command board device 13 of the base station 10, this is received by the line control device 17 (S301). The line control device 17 that has received the press-on confirms whether or not the command base device 13 is currently in data communication with the mobile station 11 that is going to talk (S302). The command board device 13 is notified that a voice call is possible (S309). If data communication is currently being performed, the process proceeds to (S303).

  In (S303), the importance of the data is determined with reference to the data content during communication. Each data is pre-set with importance for each type. FIG. 4 shows an example of the importance of data. As shown in FIG. 4, for example, the command system message is set with the importance “high”, that is, the highest importance, and the other vehicle information has the importance “medium”, that is, the importance is medium. The polling data is set so that the importance is “low”, that is, the least important. Note that the transmission time in FIG. 4 represents an average time required for transmission of each data.

  Next, in (S304), it is determined whether or not the importance of the data is “large”. If it is determined that the importance of the data is “high”, the data communication is preferentially processed (S305), and the command board apparatus 11 is notified that the voice call cannot be performed (S306). .

  If it is determined in (S304) that the importance level of the data is not “high”, it is determined in the next step (S307) whether or not the importance level of the data is “low”. If it is determined that the importance level of the data is “medium”, the process proceeds to (S203) in FIG. That is, the remaining data transmission time is calculated (S203), and if the data transmission is completed within 5 seconds, the command board 13 is notified that the data communication is completed (S205), and then the data communication is completed. Is completed (S206), the command stand apparatus 13 is notified that a voice call is possible (S208). If the data communication cannot be completed within 5 seconds, the data communication is interrupted (S207), and the command board device 13 is notified that the voice call is immediately possible (S208).

When it is determined in (S307) that the importance of the data is “low”, the data communication is interrupted (S308), and the command board device 13 is notified that a voice call is possible (S309). . When data communication is interrupted, there is data with a short transmission time as shown in FIG. 4, so the data communication interruption processing may be performed with a slight delay time (for example, 1 second) until the data communication is interrupted.
After the voice communication is completed, the suspended data is retransmitted. In this case, both the case of sending data from the beginning and the case of sending from the interrupted data may be used.

  As described above, according to the control by the line control device 17 in the second embodiment, the process is switched according to the data communication priority and the remaining transmission time, or the data communication priority is set according to the voice communication priority. This makes it possible to switch between processes, eliminating inefficient data interruption compared to conventional voice communication priority-only operation, and consequently reducing the number of retransmission processes due to data communication interruption. Increases efficiency.

  In the second embodiment, the importance of the data is divided into three levels, and control is performed so as to perform processing corresponding to each of the three levels. However, the present invention is not limited to the three levels. If the importance is determined to be “large” in the case of two levels of large and small, the data is processed as the importance “high” in the second embodiment, and if the importance is determined to be “small”, the implementation is performed In Example 2, the data is processed with a medium importance level.

Alternatively, the importance level may be set more finely. For example, the processing portion when the importance level of the data is “medium” in the second embodiment is subdivided, and a setting time that is a threshold value for whether to continue or interrupt data communication is set stepwise (for example, The threshold may be set to 7 seconds, 5 seconds, 3 seconds, etc. in descending order of importance).
In order to cope with an emergency or the like, a mode for forcibly switching to voice communication from the command board device 13 may be provided regardless of the importance of data.

  In the first and second embodiments, when there is a voice call request during data communication, the time until the completion of data communication is calculated, and whether the data communication is interrupted or continued with a predetermined time, for example, 5 seconds as a threshold. However, the control is not limited to the threshold value based on time, and the control may be performed by setting a threshold value for the data amount. That is, when a threshold is set for a predetermined number of bytes and the remaining data amount until the completion of data communication is less than or equal to the threshold, the communication is switched to voice communication after waiting for the completion of data communication, and the remaining data amount until the completion of data communication is the threshold If it is larger than the above, even if the control is performed so that the data communication is interrupted and then switched to the voice communication, the same effect as in the first and second embodiments can be obtained.

DESCRIPTION OF SYMBOLS 10 ... Headquarters base station (base station) 11, 11a-11c ... Mobile station, 13 ... Command stand device, 14 ... Automatic dispatch device, 15 ... AVM dynamic management device, 16 ... Radio control stand device, 17 ... Line control device 18, wireless devices, (S201) to (S208), each step in FIG. 2, (S301) to (S309), each step in FIG.

Claims (3)

In a wireless communication system comprising a base station and at least one or more mobile stations that perform communication in a communication mode of either voice communication or data communication between the base station,
The base station comprises communication command means for giving the communication command to the mobile station, and line control means for controlling communication between the base station and the mobile station,
When a voice communication request to the mobile station is generated from the communication command means, the line control means determines whether or not data communication is being performed with the mobile station, and it is determined that data communication is being performed. The remaining time until the data communication is completed, and if the remaining time is within a predetermined time set in advance, the communication command means is notified that the voice communication is to be waited and Notifying that the voice communication can be started after the data communication is completed, and if the remaining time is longer than a predetermined time set in advance, the data communication is interrupted and the voice communication is performed to the communication command means. A wireless communication system that notifies that it can be started. In a wireless communication system comprising a base station and at least one or more mobile stations that perform communication in a communication mode of either voice communication or data communication between the base station,
The base station comprises communication command means for giving the communication command to the mobile station, and line control means for controlling communication between the base station and the mobile station,
When a voice communication request to the mobile station is generated from the communication command means, the line control means determines whether or not data communication is being performed with the mobile station, and it is determined that data communication is being performed. If the content of the data communication corresponds to one of the two levels of importance set in advance, and it is determined that the content of the content of the data communication is high, priority is given to the data communication being executed. And informing the communication command means that voice communication is not possible,
If it is determined that the degree of importance is low, the remaining time until the data communication is completed is calculated. If the remaining time is within a predetermined time set in advance, the voice communication is performed to the communication command means. Notifying that the data communication is completed and notifying that the voice communication can be started after the completion of the data communication, and if the remaining time is greater than a predetermined time set in advance, the data communication is interrupted and then the communication command A wireless communication system characterized by notifying the means that the voice communication can be started. In a wireless communication system comprising a base station and at least one or more mobile stations that perform communication in a communication mode of either voice communication or data communication between the base station,
The base station comprises communication command means for giving the communication command to the mobile station, and line control means for controlling communication between the base station and the mobile station,
When a voice communication request to the mobile station is generated from the communication command means, the line control means determines whether or not data communication is being performed with the mobile station, and it is determined that data communication is being performed. If the content of the data communication corresponds to one of the preset three levels of importance, and if it is determined that the content of the data communication has the highest importance, Prioritize and notify the communication command means that voice communication is not possible,
When it is determined that the importance level is the second highest, the remaining time until the data communication is completed is calculated, and when the remaining time is within a predetermined time set in advance, the communication command means Notifying that the voice communication is to be waited and notifying that the voice communication can be started after the completion of the data communication. If the remaining time is longer than a predetermined time set in advance, the data communication is interrupted. Notifying the communication command means that the voice communication can be started,
A wireless communication system, characterized in that, when it is determined that the importance is the lowest, the data communication being executed is interrupted and the communication command means is notified that voice communication can be started.

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