JP6381028B2 - Wireless communication system, mobile station apparatus, wireless communication method, and wireless communication program - Google Patents

Description

  The present invention relates to a radio communication system, a mobile station apparatus, a radio communication method, and a radio communication program, and in particular, a radio communication system, a mobile station apparatus, a radio communication method, and a radio communication program that perform radio communication between a base station and a mobile station. About.

  Non-Patent Document 1 discloses a technique for maintaining communication quality between a base station and a mobile station. In the autonomous transmission output control according to Non-Patent Document 1, the transmission output is controlled according to the input voltage of the signal received by the mobile station from the base station.

  Patent Document 1 discloses a technique for dynamically managing traffic in a wireless section between a mobile station and a base station with appropriate transmission efficiency. In the technique according to Patent Document 1, the channel quality of the uplink and downlink between the mobile station and the base station is measured, and the coding rate of the error correction code is dynamically changed between the uplink and downlink, An optimum error correction coding rate is set. For this purpose, first, the line control station apparatus transmits a line measurement signal to the base station, and in response, the base station transmits a line measurement signal to the mobile station. Next, the mobile station measures downlink channel quality based on the channel measurement signal received from the base station, and transmits the measured downlink channel quality to the base station. Then, the base station transmits the received downlink channel quality to the channel control station apparatus. At the same time, the base station measures the uplink channel quality (when viewed from the mobile station), and transmits the measured uplink channel quality to the channel control station apparatus.

  In Patent Document 2, the radio base station collects quality information of a small area from each user terminal, aggregates the quality information, and returns the aggregated area quality information in response to a request from each user terminal. Technology is disclosed.

JP 2003-188855 A JP 2013-058948 A

Japan Radio Industry Association, “Narrowband Digital Communication System (SCPC / FDMA) Volume 2”, 2005.11.30

  Here, the above-described Non-Patent Document 1 and Patent Document 1 do not have a mechanism for a mobile station to obtain uplink channel quality information. Therefore, in order for the mobile station to maintain the channel quality with the base station, only the downlink channel quality measured by the mobile station itself is used, and there is insufficient information to maintain an appropriate channel quality. ing. In addition, when transmitting uplink line quality information from the base station to the mobile station, a dedicated signal or the like is required separately, which may increase the communication load. Therefore, there is a problem that it is difficult to maintain appropriate radio communication quality on the mobile station side without increasing the communication load. Patent Document 2 does not solve such a problem.

  The present invention has been made to solve such problems, and a wireless communication system for performing control for maintaining appropriate wireless communication quality on the mobile station side without increasing communication load, An object of the present invention is to provide a mobile station apparatus, a wireless communication method, and a wireless communication program.

A wireless communication system according to a first aspect of the present invention includes:
A base station and one or more mobile stations that perform radio communication with the base station,
The mobile station transmits a first signal to the base station;
The base station
Based on the first signal received from the mobile station, the communication quality with the mobile station is measured to generate first communication quality information,
Transmitting a second signal including the first communication quality information to the mobile station;
The mobile station
Extracting the first communication quality information included in the second signal received from the base station;
Based on the second signal, measure communication quality with the base station to generate second communication quality information,
Based on the first communication quality information and the second communication quality information, transmission control to the base station is performed.

The mobile station apparatus according to the second aspect of the present invention is:
Transmitting a first signal for wireless communication to the base station;
Receiving from the base station a second signal including first communication quality information measured based on the first signal received at the base station;
Extracting the first communication quality information included in the second signal;
Based on the second signal, measure communication quality with the base station to generate second communication quality information,
Based on the first communication quality information and the second communication quality information, transmission control to the base station is performed.

A wireless communication method according to the third aspect of the present invention includes:
A wireless communication method between a base station and one or more mobile stations that perform wireless communication with the base station,
The mobile station transmits a first signal to the base station;
The base station is
Based on the first signal received from the mobile station, the communication quality with the mobile station is measured to generate first communication quality information,
Transmitting a second signal including the first communication quality information to the mobile station;
The mobile station is
Extracting the first communication quality information included in the second signal received from the base station;
Based on the second signal, measure communication quality with the base station to generate second communication quality information,
Based on the first communication quality information and the second communication quality information, transmission control to the base station is performed.

A wireless communication program according to the fourth aspect of the present invention includes:
A process of transmitting a first signal for wireless communication to a base station;
Processing for receiving from the base station a second signal including first communication quality information measured based on the first signal received at the base station;
A process of extracting the first communication quality information included in the second signal;
Processing for measuring communication quality with the base station based on the second signal and generating second communication quality information;
A process of performing transmission control to the base station based on the first communication quality information and the second communication quality information;
To the mobile station apparatus.

  The present invention provides a radio communication system, a mobile station apparatus, a radio communication method, and a radio communication program for performing appropriate control for maintaining appropriate radio communication quality on the mobile station side without increasing communication load. be able to.

It is a block diagram which shows the structure of the radio | wireless communications system concerning Embodiment 1 of this invention. It is a sequence diagram which shows the flow of the radio | wireless communication process concerning Embodiment 1 of this invention. It is a block diagram which shows the structure of the radio | wireless communications system concerning Embodiment 2 of this invention. It is a block diagram which shows the structure of the mobile station concerning Embodiment 2 of this invention, and a base station. It is a flowchart for demonstrating the flow of the transmission control process of the mobile station concerning Embodiment 2 of this invention. It is a flowchart for demonstrating the flow of the communication quality information generation process concerning Embodiment 2 of this invention. It is the figure which showed dividing the value of the measured communication quality concerning Embodiment 2 of this invention according to the value. It is a figure which shows controlling transmission output according to the communication quality of both the base station recognized in the mobile station concerning Embodiment 2 of this invention, and a mobile station. It is a figure for demonstrating the outline | summary of the radio | wireless communications system concerning Embodiment 3 of this invention. It is a block diagram which shows the structure of the radio | wireless communications system concerning Embodiment 3 of this invention. It is a block diagram which shows the structure of the mobile station concerning Embodiment 3 of this invention. It is a block diagram which shows the structure of the line control apparatus concerning Embodiment 3 of this invention. It is a sequence diagram explaining the relationship between the flow from signal transmission by the mobile station concerning Embodiment 3 of this invention to reception of a return signal, and the storage timing of the various data in the separate communication quality information 70. It is a sequence diagram explaining the relationship in the case where the return signal from the base station concerning Embodiment 3 of this invention is not received more than predetermined time, and the storage timing of the various data in the separate communication quality information 70. . It is a sequence diagram explaining the relationship between the various data regarding the communication quality which a mobile station hold | maintains at the time of the signal transmission from the base station concerning Embodiment 3 of this invention, and its acquisition timing. It is the sequence diagram which showed the flow from the data acquisition from the mobile station in the circuit | line control apparatus concerning Embodiment 3 of this invention to database delivery. It is a figure which shows the operating condition of the autonomous transmission output control function according to every combination of the communication quality of a mobile station transmission signal and a base station return signal.

  Hereinafter, specific embodiments to which the present invention is applied will be described in detail with reference to the drawings. In the drawings, the same elements are denoted by the same reference numerals, and redundant description will be omitted as necessary for the sake of clarity.

  Here, the problem to be solved by the present invention will be described in detail. First, the SCPC (Single Cannel Per Carrier) communication system according to Non-Patent Document 1 described above is classified into two types according to the radio wave transmission method of the base station. One is a “base station constant transmission system” in which a base station constantly transmits radio waves. The other is a “base station emergency transmission system” that emits radio waves only when a communication device such as a command board or a mobile station transmits a signal.

  In the base station regular transmission system according to Non-Patent Document 1, it is possible for the mobile station to recognize the communication quality at that point without performing signal transmission. On the other hand, in the base station emergency transmission system, unless the radio unit transmits a signal, the communication quality at that point cannot be recognized.

  Here, when a wireless communication system is introduced, it is necessary to determine whether to use a base station constant transmission system or a base station emergency transmission system with the approval of the general communication station. However, base station continuous transmission systems that constantly transmit radio waves are rarely approved for reasons such as effective use of radio waves and interference problems, and most of them have introduced base station emergency transmission systems. is there.

  Even when the base station emergency transmission system is introduced, the deterioration avoidance method at the time of deterioration of communication quality is not necessarily implemented. Normally, when communication quality deteriorates, an operator needs to try signal transmission several times. As a result of several attempts to make a call, the operator can recognize the deterioration of the communication quality because there is no response from the partner station or based on information from the partner station.

  Even if communication quality degradation can be recognized, the method of avoiding degradation at the present time is not clear. Therefore, it was necessary to switch the channel several times until the communication quality returns to normal, repeat the signal transmission, or perform the signal transmission after a while or manual operation was required. .

  In the base station emergency transmission system, the “autonomous transmission output control function” for controlling the signal transmission output of the local station according to the reception status of the radio wave transmitted by the base station is provided from the base station. It is assumed that a signal is being received. Therefore, it does not originate from the base station reception status of the transmission signal of the mobile station, and there is a limit in maintaining appropriate line quality.

  Here, FIG. 17 shows an operation state of the autonomous transmission output control function corresponding to each combination of communication quality of the mobile station transmission signal and the base station return signal. For example, in the cases 2 and 3 of FIG. 17, the autonomous transmission output control function operates in both the base station regular transmission system and the base station emergency transmission system. On the other hand, the case of item 1 in FIG. 17 shows a case where the reception situation of the base station with respect to the transmission signal of the mobile station is bad, but the reception situation of the mobile station with respect to the transmission signal of the base station is good. In such a case, the mobile station does not receive a bad reception situation at the base station and can only grasp a good reception situation at itself, so the autonomous transmission output control function does not operate. For this reason, there is a problem in that it is impossible to perform transmission output control taking into account bad reception conditions at the base station.

<Embodiment 1 of the Invention>
Therefore, the wireless communication system according to the first exemplary embodiment of the present invention solves the above problem with the following configuration.

  FIG. 1 is a block diagram showing a configuration of a radio communication system 1000 according to the first exemplary embodiment of the present invention. The wireless communication system 1000 includes a base station 100 and a mobile station 200. The base station 100 includes a transmission unit 110, a reception unit 120, a communication quality measurement unit 130, and a control unit 140. The receiving unit 120 receives the first signal from the mobile station 200. The communication quality measuring unit 130 measures the communication quality with the mobile station 200 based on the first signal received by the receiving unit 120 and generates first communication quality information. The control unit 140 generates a second signal including the first communication quality information generated by the communication quality measurement unit 130. Transmitting section 110 transmits a second signal including the first communication quality information to mobile station 200.

  The mobile station 200 performs wireless communication with the base station 100. Moreover, in the radio | wireless communications system 1000 concerning Embodiment 1 of this invention, the mobile station 200 should just be at least 1 or more. The mobile station 200 includes a transmission unit 210, a reception unit 220, an extraction unit 230, a communication quality measurement unit 240, and a control unit 250. The transmission unit 210 transmits a first signal to the base station 100. The receiving unit 220 receives the second signal from the base station 100. Extraction unit 230 extracts first communication quality information included in the second signal received by reception unit 220. The communication quality measuring unit 240 measures the communication quality with the base station 100 based on the second signal received by the receiving unit 220 and generates second communication quality information. The control unit 250 performs transmission control to the base station 100 based on the first communication quality information and the second communication quality information.

  Here, the first signal is a signal transmitted for mobile station 200 to perform wireless communication with base station 100. In particular, the first signal may be a signal for starting wireless communication when the mobile station 200 and the base station 100 are not communicating, or a signal generated by voice transmission at that time. . The second signal is a folding signal with respect to the first signal. The first communication quality represents the quality of wireless communication such as the electric field strength, C / N ratio, or delay measured by the base station 100 when receiving the first signal. Furthermore, the transmission control is output control at the time of transmitting a signal from the mobile station 200 to the base station 100, channel switching, or the like.

  FIG. 2 is a sequence diagram showing a flow of the wireless communication process according to the first embodiment of the present invention. First, the mobile station 200 transmits a first signal to the base station 100 (S11). Next, the base station 100 measures communication quality with the mobile station 200 based on the first signal received from the mobile station 200, and generates first communication quality information (S12). Then, the base station 100 transmits a second signal including the first communication quality information to the mobile station 200 (S13).

  Subsequently, the mobile station 200 extracts the first communication quality information included in the second signal received from the base station 100 (S14). Further, the mobile station 200 measures the communication quality with the base station 100 based on the second signal and generates second communication quality information (S15). Then, the mobile station 200 performs transmission control to the base station 100 based on the first communication quality information and the second communication quality information (S16).

  In this way, the base station 100 performs transmission by including the first communication quality information measured from the first signal in the second signal that is a return signal with respect to the first signal. Therefore, the mobile station 200 can acquire uplink quality information (first communication quality information) from the received second signal. In addition, the mobile station 200 measures downlink quality information (second communication quality information) from the received second signal. Therefore, the mobile station 200 can perform appropriate transmission control in consideration of both uplink and downlink communication quality information. Since the mobile station 200 can acquire the measurement result of the first signal transmitted from the mobile station 200 from the second signal to be measured by the mobile station 200, the mobile station 200 is efficient without exchanging excessive signals. That is, according to Embodiment 1 of the present invention, it is possible to perform appropriate control for maintaining appropriate wireless communication quality on the mobile station side without increasing the communication load.

<Embodiment 2 of the Invention>
The second embodiment of the present invention is a specific example of the first embodiment described above. FIG. 3 is a block diagram showing a configuration of the wireless communication system 2000 according to the second embodiment of the present invention. The wireless communication system 2000 includes a host system device 1, a line control device 2, base stations 31 and 32, and mobile stations 41 and 42. The wireless communication system 2000 may be a modification of the SCPC communication system described above. And base station 31 and 32 shall mount the function which transmits a return signal using a different frequency with respect to the signal received from the mobile station.

  The host system device 1 is a device that communicates with the mobile stations 41 and 42 via the base station 31 or 32. The command board 11 and the remote control device 12 are examples of the host system device 1. The line control device 2 is a device that controls a line in communication between the base stations 31 and 32 and the mobile stations 41 and 42. The line control device 2 may be included in the host system device 1.

  Base stations 31 and 32 are examples of the base station 100 described above. The mobile stations 41 and 42 are examples of the mobile station 200 described above. The base station 31 can wirelessly communicate with the mobile station 41 existing in its own base station area 51. Then, the mobile station 41 transmits a voice transmission signal 611 (first signal) to the base station 31, and the base station 31 measures the communication quality with respect to the transmission signal 611, and returns a return signal 612 (first signal). 2) is added to the measured communication quality data (first communication quality information) and transmitted to the mobile station 41. Then, the mobile station 41 transmits the communication quality data on the base station 31 side given to the received return signal 612 and the communication quality data on the mobile station 41 side measured with respect to the return signal 612 (second The communication quality of the base station 31 and the mobile station 41 at the point where the mobile station 41 has transmitted a signal is immediately recognized.

  Similarly, the base station 32 can wirelessly communicate with the mobile station 42 existing in its own base station area 52. The mobile station 42 transmits a transmission signal 621 (first signal) to the base station 32, and the base station 32 transmits a return signal 622 (second signal) to the transmission signal 621 to the mobile station 42. To do. The mobile station 42 transmits the communication quality data on the base station 32 side given to the received return signal 622 and the communication quality data on the mobile station 42 side measured for the return signal 622 (second communication). Quality information), the communication quality of both the base station 32 and the mobile station 42 at the point where the mobile station 42 has transmitted the signal is immediately recognized.

  FIG. 4 is a block diagram showing configurations of the mobile station 41 and the base station 31 according to the second embodiment of the present invention. The detailed configurations of the mobile station 42 and the base station 32 are also the same as those in FIG.

  The base station 31 includes a communication unit 311, a communication quality measurement unit 312, and a control unit 313. The communication unit 311 corresponds to the transmission unit 110 and the reception unit 120 in FIG. 1, the communication quality measurement unit 312 corresponds to the communication quality measurement unit 130 in FIG. 1, and the control unit 313 corresponds to the control unit 140 in FIG. Equivalent to. Here, the communication quality measurement unit 312 according to the second embodiment generates a level value corresponding to the measurement value in the measurement based on the transmission signal 611 as the first communication quality information. For this reason, information smaller in size than the measurement value itself is added to the return signal 612 as the first communication quality information. Therefore, the communication load accompanying transmission of the return signal 612 can be reduced.

  In addition, the communication unit 311 transmits the return signal 612 at a frequency different from the frequency at which the transmission signal 611 is received from the mobile station 41. Further, it is assumed that the first communication quality information is given to the undefined area of the predetermined radio frame format in the return signal 612.

  In addition, the communication quality measurement unit 312 measures the communication quality of the transmission signal 611 received from the mobile station 41 at a preset interval. Then, the control unit 313 gives the first communication quality information to the undefined area of the predetermined radio frame format of the return signal 612 every time measurement is performed. Therefore, the transmission unit 110 transmits the return signal without interruption every measurement.

  The mobile station 41 includes a radio unit 411 and a vehicle operation terminal unit 412. The wireless unit 411 includes a communication unit 4111 and a communication quality measurement unit 4112. The communication unit 4111 corresponds to the transmission unit 210 and the reception unit 220 in FIG. 1, and the communication quality measurement unit 4112 corresponds to the extraction unit 230 and the communication quality measurement unit 240 in FIG. Here, the communication quality measurement unit 4112 according to the second embodiment, when the first communication quality information can be extracted from the return signal 612, determines the communication quality with the base station 31 based on the return signal 612. Measurement may be performed. Thereby, it is not necessary to perform unnecessary measurement, and the processing can be made efficient. In addition, the vehicle operation terminal unit 412 may measure the communication quality at the time of signal transmission and at the end of communication.

  Further, the communication quality measuring unit 4112 generates a level value corresponding to the measurement value in the measurement based on the return signal 612 as the second communication quality information. Then, the communication quality measurement unit 4112 notifies the vehicle operation terminal unit 412 of the extracted first communication quality information and the generated second communication quality information.

  The vehicle operation terminal unit 412 includes a control unit 4121 and a storage unit 4122. The control unit 4121 corresponds to the control unit 250 of the mobile station 200 in FIG. Storage unit 4122 stores base station communication quality information 71 and mobile station communication quality information 72. Base station communication quality information 71 corresponds to first communication quality information, and mobile station communication quality information 72 corresponds to second communication quality information. The control unit 4121 stores the first communication quality information and the second communication quality information received from the communication quality measurement unit 4112 in the storage unit 4122 as the base station communication quality information 71 and the mobile station communication quality information 72, respectively. Then, the control unit 4121 determines the degree of the uplink communication quality with the base station 31 based on the base station communication quality information 71. In addition, the control unit 4121 determines the degree of downlink communication quality with the base station 31 based on the mobile station communication quality information 72. Then, the control unit 4121 performs transmission control according to the combination of the degree of communication quality in the uplink and downlink directions. As a result, it is possible to perform flexible control in consideration of uplink and downlink communication quality.

  FIG. 5 is a flowchart for explaining a flow of transmission control processing of the mobile station 41 according to the second embodiment of the present invention. First, the communication unit 4111 of the mobile station 41 transmits a transmission signal 611 to the base station 31 (S21).

  Here, the flow of the communication quality information generation process in the base station 31 will be described using the flowchart of FIG. The communication unit 311 of the base station 31 receives the transmission signal 611 from the mobile station 41, and the communication quality measurement unit 312 measures the communication quality when the transmission signal 611 is received (S31). Here, the electric field strength is measured as the communication quality. Then, the communication quality measuring unit 312 identifies the communication quality level value from the electric field strength that is the measurement value, and generates communication quality information (S32).

  FIG. 7 is a diagram showing that the measured communication quality value according to the second embodiment of the present invention is divided into stages according to the value. That is, the communication quality measuring unit 312 classifies the numerical value of the electric field strength that is the measurement value into arbitrary stages (levels) according to the strength. For example, the communication quality measuring unit 312 specifies the level value “1” when the electric field strength is low, and specifies the level value “3” when the electric field strength is high. Here, the communication quality classification is determined in advance by a threshold value.

  Then, the control unit 313 assigns the divided level value to an undefined area of a predetermined radio frame format in the return signal 612. Thereafter, the communication unit 311 transmits a return signal 612 to the mobile station 41.

  Returning to FIG. The communication unit 4111 receives the return signal 612 from the base station 31 (S22). Then, the communication quality measuring unit 4112 extracts the base station communication quality information 71 from the return signal 612 (S23), and notifies the vehicle operation terminal unit 412 of it. In response to this, the control unit 4121 stores the received base station communication quality information 71 in the storage unit 4122, and determines the uplink communication quality based on the base station communication quality information 71 (S24). That is, the control unit 4121 determines the level value of the communication quality measured when the transmission signal 611 is received on the base station 31 side.

  On the other hand, the communication quality measuring unit 4112 measures communication quality with the base station 31 and generates mobile station communication quality information 72 based on the return signal 612 received from the base station 31 (S25). Since the process of step S25 is equivalent to FIG. 6, detailed description is abbreviate | omitted. Then, the communication quality measuring unit 4112 notifies the mobile station communication quality information 72 to the vehicle operation terminal unit 412.

  In response to this, the control unit 4121 stores the received mobile station communication quality information 72 in the storage unit 4122, and determines the downlink communication quality based on the mobile station communication quality information 72 (S26). That is, the control unit 4121 determines the level value of the communication quality measured when the return signal 612 is received on the mobile station 41 side.

  After that, the control unit 4121 controls the signal transmission output based on the combination of the uplink and downlink communication quality level values (S27). FIG. 8 is a diagram illustrating transmission output control according to the communication quality of both the base station and the mobile station recognized by the mobile station according to the second embodiment of the present invention. That is, the control unit 4121 controls the signal transmission output based on, for example, the table shown in FIG.

  The features of FIG. 8 are as follows. First, when the degree of communication quality in the downlink direction is high but the degree of communication quality in the uplink direction is low, the control unit 4121 performs transmission control by increasing the signal transmission output in the mobile station 41. For example, in FIG. 8, even if the level value of the mobile station communication quality information 72 is “3”, if the level value of the base station communication quality information 71 is “1”, “high output” is set. This corresponds to the case of item 1 in FIG. 17 and is a case where communication quality could not be maintained until now because the autonomous transmission output control function did not operate. In this embodiment, since it is possible to consider that the uplink communication quality is low, it is possible to maintain appropriate line quality by controlling to high output.

  Also, the control unit 4121 performs transmission control by suppressing output of signal transmission in the mobile station 41 when the degree of communication quality in the uplink direction is high even if the degree of communication quality in the downlink direction is low. For example, in FIG. 8, even if the level value of the mobile station communication quality information 72 is “1”, if the level value of the base station communication quality information 71 is “3”, “medium output” is set. This corresponds to the case of item 2 in FIG. 17 and is a case that has not been distinguished from the case of item 3 in FIG. In this embodiment, since it is possible to consider that the communication quality in the uplink direction is high, by controlling to medium output, it becomes possible to maintain an appropriate line quality for what has been excessively output so far.

  In addition, when one of the uplink and downlink communication quality levels is medium, the control unit 4121 performs transmission control according to the other communication quality level. For example, in FIG. 8, when the level value of either the base station communication quality information 71 or the mobile station communication quality information 72 is “2”, the other level value is “1” or “3”. For example, “high output” or “low output” is set. Thus, in this embodiment, optimal control can be performed according to the combination of the degree of communication quality in the uplink direction and the downlink direction.

  From the above, in this embodiment, it is possible for the mobile station to determine the deterioration of communication quality, and to immediately and automatically perform operations to avoid communication quality deterioration such as control of transmission output and channel switching. Become. That is, it is possible to perform control for maintaining appropriate radio communication quality on the mobile station side without increasing the communication load.

<Third Embodiment of the Invention>
The third embodiment of the present invention is an improved example of the above-described second embodiment. Here, in addition to the above-described problems, the problem to be further solved by the third embodiment of the present invention will be described. For example, in the case of items 4 to 6 in FIG. 17 described above, since the mobile station cannot receive a signal from the base station, the above-described autonomous transmission output control function does not operate. Therefore, there is a technique of creating area communication quality data in advance. That is, the communication quality of the communication area is investigated in advance to create a database, and area communication quality data reflecting the database is manually created. The mobile station automatically switches the use channel according to the area communication quality data.

  However, in this method, it is necessary to manually update the database when the surrounding environment changes. Therefore, it cannot be operated when the mobile station starts signal transmission from the non-communication time. Therefore, there is a problem that communication quality deterioration cannot be avoided as much as possible because of lack of immediacy and accuracy.

  That is, since the area communication quality data is based on a preliminary survey, it is impossible to immediately respond to environmental changes such as the effects of building construction. In other words, every time the environment changes, it is necessary to manually update the database manually, which requires time and effort for maintenance.

  Therefore, in Embodiment 3 of the present invention, the higher-level equipment collects communication quality information acquired by each mobile station, creates a database, and performs statistical processing on the area communication quality data based on the database. To be delivered. The area communication quality data collects communication quality information in signal exchanges normally performed by each mobile station, and is automatically updated and distributed to the mobile station each time. Therefore, it becomes possible to immediately and automatically respond to a change in the communication status due to a change in the environment, and maintenance work is not required, so that the above-described problems are solved.

  FIG. 9 is a diagram for explaining the outline of the wireless communication system 3000 according to the third embodiment of the present invention. The wireless communication system 3000 includes a line control device 2, a public network base station 33, and mobile stations 41 and 42. Note that the wireless communication system 3000 uses the line control device 2 as an example of the host device, but the command board 11 or the remote control device 12 shown in FIG.

  Each of the mobile stations 41 and 42 transmits individual communication quality information including the first communication quality information and the second communication quality information to the line control device 2. Specifically, each of the vehicle operation terminal units 412 and 422 transmits individual communication quality information 631 and 632 to the public network base station 33 via the wireless public network 53. Then, the public network base station 33 transfers the received individual communication quality information group 641 to the line control device 2.

  Then, the line control device 2 creates the DB 21 from the individual communication quality information collected from each mobile station. The line control device 2 performs statistical processing based on the DB 21, and generates area communication quality information 22 in the communication area of each base station (65). Then, the line control device 2 distributes the area communication quality information 22 to each mobile station. Specifically, the line control device 2 transmits area communication quality information 642 to the public network base station 33, and the public network base station 33 transmits the area communication quality information 633 and 634 to the mobile station via the wireless public network 53. 41 and 42.

  Each of the mobile stations 41 and 42 performs transmission control to the base station based on the area communication quality information and the individual communication quality information received from the line control device 2. As a result, it is possible to respond immediately to environmental changes and perform transmission control based on the latest area communication quality data. In addition, the complexity of manually maintaining the area communication quality data can be eliminated.

  FIG. 10 is a block diagram showing a configuration of a wireless communication system 3001 according to the third embodiment of the present invention. A wireless communication system 3001 shows the wireless communication system 3000 from another point of view, and shows an example in which one mobile station 43 communicates with the line control apparatus 2 through two routes of the wireless network 54 and the wireless public network 53. And in the radio | wireless communications system 3001, the signal is transmitted from the mobile station 43, DB21 is produced in the line control apparatus 2, and the flow by which area communication quality information is delivered is shown. That is, the wireless communication system 3001 includes a line control device 2, a base station 31, area communication quality information 22, and a mobile station 43. Note that the reason why the number of mobile stations 43 is one is for ease of explanation. Actually, two or more mobile stations 43 exist, and similarly, there are a plurality of base stations 31 and public network base stations 33. Shall.

  The base station 31 receives the transmission signal 9 from the mobile station 43 via the wireless network 54 and generates first communication quality information by the communication quality measuring unit 312. Here, when creating the DB 21 in the line control device 2, it is efficient to arrange information in each communication in time series. Therefore, the base station 31 according to the present embodiment sends a second signal (return signal 13) further including identification information corresponding to the number of times of communication with the mobile station 41 to the communication quality measurement unit 312 and the wireless network 54. To the mobile station 41. That is, the base station 31 sends a unique number to the return signal 13 for each communication. For example, each time a signal is transmitted, the base station 31 assigns a serial number starting from “1” to a predetermined radio frame format of the transmission signal and transmits the signal. The base station 31 increments the serial number by “1” every time a call is made, and resets at an arbitrary timing. Then, after resetting, it starts again from “1”.

  FIG. 11 is a block diagram showing a configuration of the mobile station 43 according to the third embodiment of the present invention. The mobile station 43 includes a radio unit 431 and a vehicle operation terminal unit 432. The wireless unit 431 includes a press setting unit 4311, a communication quality measuring unit 4312, and a storage unit 4313. The press setting unit 4311 is an example of the communication unit 4111, and transmits the transmission signal 9 to the base station 31 via the wireless network 54 by the transmission-controlled output by setting the press ON.

  Also, the communication quality measuring unit 4312 extracts the base station communication quality information 71 from the return signal 13 and generates the mobile station communication quality information 72 every time the return signal 13 is received from the base station 31. At this time, the communication quality measuring unit 4312 further extracts the identification information included in the return signal 13. Then, the communication quality measuring unit 4312 includes base station communication quality information 71, mobile station communication quality information 72, a channel used for communication, extracted identification information, an individual number of the base station that has transmitted the return signal 13, and A position information acquisition request signal is transmitted to the vehicle operation terminal unit 432.

  The storage unit 4313 stores a response waiting time threshold value 4314. The response waiting time threshold 4314 is a response waiting time threshold until the press setting unit 4311 receives the return signal 13 from the base station 31 after the transmission signal 9 is transmitted. The response waiting time threshold value 4314 is set in the storage unit 4313 in advance, and is updated according to the area communication quality information 80 as described later.

  The vehicle operation terminal unit 432 includes a control unit 4321, a position information acquisition unit 4322, and a storage unit 4323. The position information acquisition unit 4322 acquires the position information 73 using GPS in response to receiving the position information acquisition request signal. The control unit 4321 includes various information received from the radio unit 431 (base station communication quality information 71, mobile station communication quality information 72, channel, identification information, individual number, and the like) and the acquired position information 73. The individual communication quality information 70 is stored in the storage unit 4323.

  Thereafter, the control unit 4321 of the vehicle operation terminal unit 432 transmits the individual communication quality information 70 to the public network base station 33 via the wireless public network 53, for example, periodically or at a predetermined timing (17). Then, the public network base station 33 transfers the received individual communication quality information 18 to the line control device 2. That is, the vehicle operation terminal unit 432 sends the individual communication quality information to the line control device 2 via a communication network (wireless public network 53) other than the communication network (wireless network 54) for performing wireless communication with the base station 31. Send. Thereby, the communication load can be distributed. Further, the vehicle operation terminal unit 432 may collectively transmit the plurality of individual communication quality information 70 accumulated in the storage unit 4323 to the line control device 2 at an arbitrary timing.

  FIG. 12 is a block diagram showing a configuration of the line control device 2 according to the third embodiment of the present invention. The line control device 2 includes a collection unit 23, a registration unit 24, a statistical processing unit 25, a distribution unit 26, a DB 21, and area communication quality information 22. The collection unit 23 collects the individual communication quality information 18 from each of the plurality of mobile stations. Specifically, the collection unit 23 receives the individual communication quality information 18 from the public network base station 33 or another base station (not shown). The registration unit 24 integrates the collected individual communication quality information 18 and registers it in the DB 21 as the collection information 211. At this time, the registration unit 24 classifies and registers the individual communication quality information received from each mobile station according to the time series based on the identification information included in the individual communication quality information. This registration process can also be referred to as a DB 21 creation process. Also, the line control device 2 uses the identification information given by the base station 31 to collect the communication information of each mobile station and base station that are not time synchronized when collecting communication quality data from each mobile station. It can be said that it can be organized into series. Then, the statistical processing unit 25 generates the area communication quality information 22 by performing the statistical processing 65 on the collected information 211 registered in the DB 21.

  In other words, the registration unit 24 arranges the collected individual communication quality information 18 in time series for each base station and channel, and uses this as a database. Then, the statistical processing unit 25 calculates the average value of the values registered in the DB 21 and indicating the stage classified according to the communication quality value, and uses the value as the value indicating the communication quality at the measurement point. Area communication quality data 22 is created.

  Thereafter, the distribution unit 26 transmits the latest area communication quality information 19 among the generated ones to the public network base station 33. At this time, the distribution unit 26 distributes the area communication quality information 19 at an arbitrary timing. Then, the public network base station 33 distributes the received area communication quality information 19 (20) to each mobile station. Thereby, the latest area communication quality data can be held in each mobile station.

  Returning to FIG. The control unit 4321 of the vehicle operation terminal unit 432 of the mobile station 41 stores the area communication quality information 20 received from the public network base station 33 via the wireless public network 53 as the area communication quality information 80 in the storage unit 4323. Then, the control unit 4321 controls output based on the area communication quality information 80, the base station communication quality information 71, and the mobile station communication quality information 72. First, when the control unit 4321 determines that the communication quality of either the base station or the mobile station is below a preset threshold based on the base station communication quality information 71 and the mobile station communication quality information 72, It is determined that the quality has deteriorated, and the transmission output is controlled based on FIG. Alternatively, when it is determined that the communication quality has deteriorated, the control unit 4321 refers to the area communication quality information 80 and switches to that channel autonomously when there is a channel with good communication quality at the local point. .

  Furthermore, the control unit 4321 performs display on the map data according to the degree of communication quality in the area communication quality information. For example, the communication quality is displayed on the map data so that the communication quality can be visually confirmed based on a preset color and its density. Thereby, the state of communication quality can be easily grasped visually.

  Further, the control unit 4321 may update the response waiting time threshold 4314 according to the area communication quality information 80 stored in the storage unit 4323. For example, the control unit 4321 sets the response waiting time threshold value 4314 to a small value for a point where the communication quality is good based on the area communication quality information 80, and a response waiting time for a point where the communication quality is bad. The threshold 4314 can be arbitrarily set, for example, a large value. Thereby, the optimal waiting time interval can be maintained according to the communication situation of the area.

  Next, various processes according to the third embodiment of the present invention will be described with reference to the following sequence diagrams. FIG. 13 is a sequence diagram for explaining the relationship between the flow from signal transmission to reception of the return signal by the mobile station according to the third embodiment of the present invention and the storage timing of various data in the individual communication quality information 70. .

  First, the press setting unit 4311 of the mobile station 43 transmits the transmission signal 9 to the base station 31 by setting the press ON (S101). And the communication quality measurement part 4312 transmits the notification of the channel information currently used for communication, and a positional information acquisition request signal with respect to the vehicle operation terminal part 432 (S102).

  Next, the position information acquisition unit 4322 of the vehicle operation terminal unit 432 acquires the position information I by receiving the position information acquisition request signal (S103). Then, the control unit 4321 temporarily stores the used channel information 74 included in the notification from the wireless unit 431 together with the acquired position information I731 as the individual communication quality information 70 in the storage unit 4323 (S104).

  After that, the radio unit 431 receives the return signal 13 including the serial number 75, the base station ID 76, and the base station received electric field strength 71a from the base station 31, and the communication quality measuring unit 4312 then receives the received electric field in the return signal 13. The intensity (mobile station received electric field intensity 72a) is measured (S105). At the same time, the communication quality measuring unit 4312 extracts the serial number 75, the base station ID 76, and the base station received electric field strength 71a from the return signal 13, and includes the measured mobile station received electric field strength 72a to the vehicle operation terminal unit 432. Notification is made (S106).

  Then, the control unit 4321 of the vehicle operation terminal unit 432 stores the serial number 75, the base station ID 76, the base station received electric field strength 71a, and the mobile station received electric field strength 72a included in the notification from the wireless unit 431. In addition to the communication quality information 70, it is stored in the storage unit 4323 (S107).

  Thereafter, the press setting unit 4311 performs press OFF setting (S108). Accordingly, the communication quality measurement unit 4312 transmits a position information acquisition request signal and a signal transmission completion notification to the vehicle operation terminal unit 432 (S109). And the positional information acquisition part 4322 of the vehicle operation terminal part 432 acquires the positional information II by receiving the positional information acquisition request signal (S110). Then, the control unit 4321 adds the acquired position information II732 to the already stored individual communication quality information 70 and stores it in the storage unit 4323 (S111).

  FIG. 14 explains the relationship between the processing when the return signal from the base station according to the third embodiment of the present invention has not been received for a predetermined time or more and the storage timing of various data in the individual communication quality information 70. It is a sequence diagram.

  First, in steps S201 to S204, processing is performed in the same manner as in steps S101 to S104 in FIG. Here, the press setting unit 4311 starts a timer after sending a signal accompanying the press ON, and waits for reception of the return signal 13 from the base station 31 until the response waiting time threshold value 4314 elapses. If the response waiting time threshold 4314 has elapsed without receiving the return signal 13, the wireless unit 431 determines that wireless communication is added to the base station 31 (S205). And the radio | wireless part 431 transmits a communication impossibility notification to the vehicle operation terminal part 432 (S206). Then, the control unit 4321 of the vehicle operation terminal unit 432 adds a message indicating that communication is not possible 77 to the individual communication quality information 70 based on the received communication failure notification and stores it in the storage unit 4323 (S207).

  Thereafter, the press setting unit 4311 performs press OFF setting (S208). Accordingly, the communication quality measurement unit 4312 transmits a position information acquisition request signal to the vehicle operation terminal unit 432 (S209). And the positional information acquisition part 4322 of the vehicle operation terminal part 432 acquires the positional information II by receiving the positional information acquisition request signal (S210). Then, the control unit 4321 adds the acquired position information II732 to the already stored individual communication quality information 70 and stores it in the storage unit 4323 (S211).

  In addition, the base station performs not only the return of the signal received from the mobile station but also the signal transmission based on the signal received from the host system as well as the command stand. FIG. 15 is a sequence diagram for explaining the relationship between various data relating to communication quality held by a mobile station and its acquisition timing when a signal is transmitted from the base station according to the third embodiment of the present invention.

  Here, first, the radio unit 431 measures the communication quality (mobile station received electric field strength 72a) of the signal (including the base station ID 76 and the serial number 75) transmitted from the base station 31 (S301). Then, the communication quality measuring unit 4312 includes the position information acquisition request signal, the channel information used for communication, the serial number 75, the base station ID 76, and the mobile station received electric field strength 72a to the vehicle operation terminal unit 432. (S302).

  And the positional information acquisition part 4322 of the vehicle operation terminal part 432 acquires the positional information I by receiving the positional information acquisition request signal (S303). The control unit 4321 temporarily stores the used channel information 74, serial number 75, base station ID 76, and mobile station received electric field strength 72 a included in the notification from the radio unit 431 together with the acquired position information I 731. Is stored as individual communication quality information 70 (S304).

  Thereafter, the radio unit 431 completes signal reception from the base station (S305), and the communication quality measurement unit 4312 transmits a position information acquisition request signal and a communication completion notification to the vehicle operation terminal unit 432 (S306). ). And the positional information acquisition part 4322 of the vehicle operation terminal part 432 acquires the positional information II by receiving the positional information acquisition request signal (S307). Then, the control unit 4321 adds the acquired position information II732 to the already stored individual communication quality information 70 and stores it in the storage unit 4323 (S308).

  FIG. 16 is a sequence diagram showing a flow from data acquisition from the mobile station to database distribution in the line control apparatus according to the third embodiment of the present invention. Here, it is assumed that the mobile stations 41 and 42 temporarily hold the individual communication quality information 70 in the storage unit 4323 by the operations of FIGS.

  Here, the mobile station 41 transmits the individual communication quality information 70 via the public network base station 33 via the wireless public network 53 in response to a specific dynamic transmission (S401) (S403). Thereby, the line control apparatus 2 registers the individual communication quality information 70 received from the mobile station 41 in the DB 21 as the collection information 211a. Then, the line control device 2 transmits a reception completion notification to the mobile station 41 via the wireless public network 53 or the wireless network 54 (S405).

  Similarly, the mobile station 42 transmits the individual communication quality information 70 via the public network base station 33 via the wireless public network 53 (S404), triggered by specific dynamic transmission (S402). Thereby, the line control apparatus 2 registers the individual communication quality information 70 received from the mobile station 42 in the DB 21 as the collection information 211b. Then, the line control device 2 transmits a reception completion notification to the mobile station 42 via the wireless public network 53 or the wireless network 54 (S406).

  Further, the line control device 2 registers in the DB 21 based on the individual communication quality information 70 received from each mobile station, performs statistical processing based on the collected information 211a and 211b, and generates area communication quality information 22 (S407). ). Thereafter, the line control device 2 distributes the area communication quality information 22 to the mobile stations 41 and 42 (S4081 and S4082). Note that the timing at which the vehicle operation terminal unit 432 of each mobile station transmits the individual communication quality information 70 may be transmitted not only at the same time as the movement but also when the timer expires.

  As described above, according to the present embodiment, it is possible for the mobile station to determine communication quality deterioration, and to immediately and automatically perform operations to avoid communication quality deterioration such as transmission output control and channel switching. In addition, the communication quality at the point displayed on the map can be visually confirmed. Therefore, it is possible to avoid the confusion at the site due to the deterioration of communication quality as much as possible.

  In addition, since the area communication quality information held by each mobile station is automatically updated, maintenance work such as database update and distribution is not required even when the environment changes.

  Furthermore, a process corresponding to the autonomous call control function that has been able to operate only in a situation where a signal from a base station has been received conventionally is referred to the area communication quality information, so that the mobile station It is possible to operate even when transmitting.

<Other embodiments of the invention>
The vehicle operation terminal unit included in the mobile station described above is not limited to a “vehicle”. That is, it is assumed that the mobile station according to the embodiment of the present invention can be applied to any portable terminal or the like.

  Moreover, regarding the communication quality measured by each base station or mobile station, the electric field strength is exemplified, but the present invention is not limited to this. For example, the communication quality may represent wireless communication quality such as C / N ratio or delay. Furthermore, regardless of the type, the accuracy can be further improved by using these plural types as indices.

  In the above embodiment, the base station divides the stage according to the measurement value to reduce the communication load, and assigns the value to the return signal, but the measured value itself can also be assigned. To do.

  Next, regarding the public network used when transmitting the data held in the vehicle operation terminal unit to the line control device, regardless of the type, if the communication load can be tolerated, the wireless network It is also possible to make a call. When it is not desired to give a load to either public network or wireless network communication, data can be carried by a recording medium such as a USB memory or an SD card.

  In the above embodiment, the radio unit and the vehicle operation terminal unit are shown as the physical configuration of the mobile station. However, the device may be separated as a device, or may be a single device having each function. To do. Further, although the DB 21 is shown as the physical configuration of each line control device, a dedicated package, software collection of an existing package, or a device dedicated to database creation is also possible. Furthermore, in creating the area communication quality information, the average value of the collected data is used as the communication quality at that point, but the maximum value and the minimum value can be used instead of the average value.

  Furthermore, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention described above. For example, in the above-described embodiment, the present invention has been described as a hardware configuration, but the present invention is not limited to this. The present invention can also realize arbitrary processing by causing a CPU (Central Processing Unit) to execute a computer program.

  In the above example, the program can be stored and supplied to a computer using various types of non-transitory computer readable media. Non-transitory computer readable media include various types of tangible storage media. Examples of non-transitory computer-readable media include magnetic recording media (for example, flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (for example, magneto-optical disks), CD-ROMs (Read Only Memory), CD-Rs, CD-R / W, DVD (Digital Versatile Disc), BD (Blu-ray (registered trademark) Disc), semiconductor memory (for example, mask ROM, PROM (Programmable ROM), EPROM (Erasable PROM), flash ROM, RAM ( Random Access Memory)). The program may also be supplied to the computer by various types of transitory computer readable media. Examples of transitory computer readable media include electrical signals, optical signals, and electromagnetic waves. The temporary computer-readable medium can supply the program to the computer via a wired communication path such as an electric wire and an optical fiber, or a wireless communication path.

A part or all of the above embodiments can be described as in the following supplementary notes, but is not limited thereto.
(Appendix 1)
A base station and one or more mobile stations that perform radio communication with the base station,
The mobile station transmits a first signal to the base station;
The base station
Based on the first signal received from the mobile station, the communication quality with the mobile station is measured to generate first communication quality information,
Transmitting a second signal including the first communication quality information to the mobile station;
The mobile station
Extracting the first communication quality information included in the second signal received from the base station;
Based on the second signal, measure communication quality with the base station to generate second communication quality information,
A wireless communication system that performs transmission control to the base station based on the first communication quality information and the second communication quality information.
(Appendix 2)
The wireless communication system according to claim 1, wherein the base station generates a level value corresponding to a measurement value in the measurement based on the first signal as the first communication quality information.
(Appendix 3)
The mobile station
Determining the degree of uplink communication quality with the base station based on the first communication quality information;
Determining the degree of downlink communication quality with the base station based on the second communication quality information,
The wireless communication system according to Supplementary Note 1 or 2, wherein the transmission control is performed according to a combination of the degree of communication quality in the uplink direction and the downlink direction.
(Appendix 4)
The wireless communication system further includes a host system device for managing two or more mobile stations and the base station,
Each of the mobile stations
Transmitting individual communication quality information including the first communication quality information and the second communication quality information to the host system device;
The host system device is
Based on the individual communication quality information received from the mobile station, generates area communication quality information in the communication area of the base station,
Delivering the area communication quality information to each of the mobile stations;
Each of the mobile stations
The wireless communication system according to any one of appendices 1 to 3, wherein transmission control to the base station is performed based on the area communication quality information and the individual communication quality information received from the higher-order apparatus.
(Appendix 5)
The base station
Transmitting the second signal further including identification information corresponding to the number of times of communication with the mobile station to the mobile station;
The mobile station
Further extracting the identification information contained in the second signal;
Transmitting the individual communication quality information further including the extracted identification information to the host system device;
The host system device is
Based on the identification information included in the individual communication quality information, classify the individual communication quality information received from each mobile station according to a time series, and generate the area communication quality information,
The wireless communication system according to attachment 4, wherein the latest information of the area communication quality information is distributed to each of the mobile stations.
(Appendix 6)
The mobile station
A threshold of a waiting time until the second signal is received after the transmission of the first signal is set in advance;
The wireless communication system according to appendix 4 or 5, wherein the threshold value is updated according to the area communication quality information.
(Appendix 7)
The mobile station
The wireless communication system according to any one of appendices 4 to 6, wherein display is performed on map data in accordance with a degree of communication quality in the area communication quality information.
(Appendix 8)
If the degree of communication quality in the downlink direction is high but the degree of communication quality in the uplink direction is low, the mobile station performs the transmission control by increasing the output of signal transmission in the mobile station. 3. The wireless communication system according to 3.
(Appendix 9)
If the degree of communication quality in the downlink direction is low but the degree of communication quality in the uplink direction is high, the mobile station performs the transmission control while suppressing the output of signal transmission in the mobile station. The radio communication system according to 3 or 8.
(Appendix 10)
The mobile station performs the transmission control according to the degree of the other communication quality when one of the degrees of the communication quality in the uplink direction and the downlink direction is medium. Any one of Supplementary notes 3, 8 and 9 The wireless communication system according to item.
(Appendix 11)
The mobile station
The wireless communication system according to any one of appendices 4 to 7, wherein the individual communication quality information is transmitted to the host system device via a communication network other than a communication network for performing the wireless communication with the base station. .
(Appendix 12)
The mobile station measures communication quality with the base station based on the second signal when the first communication quality information can be extracted from the second signal.
The wireless communication system according to any one of supplementary notes 1 to 11, wherein the second communication quality information is measured.
(Appendix B1)
Transmitting a first signal for wireless communication to the base station;
Receiving from the base station a second signal including first communication quality information measured based on the first signal received at the base station;
Extracting the first communication quality information included in the second signal;
Based on the second signal, measure communication quality with the base station to generate second communication quality information,
A mobile station apparatus that performs transmission control to the base station based on the first communication quality information and the second communication quality information.
(Appendix C1)
A wireless communication method between a base station and one or more mobile stations that perform wireless communication with the base station,
The mobile station transmits a first signal to the base station;
The base station is
Based on the first signal received from the mobile station, the communication quality with the mobile station is measured to generate first communication quality information,
Transmitting a second signal including the first communication quality information to the mobile station;
The mobile station is
Extracting the first communication quality information included in the second signal received from the base station;
Based on the second signal, measure communication quality with the base station to generate second communication quality information,
A wireless communication method for performing transmission control to the base station based on the first communication quality information and the second communication quality information.
(Appendix D1)
A process of transmitting a first signal for wireless communication to a base station;
Processing for receiving from the base station a second signal including first communication quality information measured based on the first signal received at the base station;
A process of extracting the first communication quality information included in the second signal;
Processing for measuring communication quality with the base station based on the second signal and generating second communication quality information;
A process of performing transmission control to the base station based on the first communication quality information and the second communication quality information;
Is a wireless communication program for causing a mobile station apparatus to execute.

1000 wireless communication system 100 base station 110 transmission unit 120 reception unit 130 communication quality measurement unit 140 control unit 200 mobile station 210 transmission unit 220 reception unit 230 extraction unit 240 communication quality measurement unit 250 control unit 2000 wireless communication system 3000 wireless communication system 3001 Wireless communication system 1 Host system device 11 Command board 12 Remote control device 2 Line control device 21 DB
211 Collected information 211a Collected information 211b Collected information 22 Area communication quality information 23 Collection unit 24 Registration unit 25 Statistical processing unit 26 Distribution unit 31 Base station 311 Communication unit 312 Communication quality measurement unit 313 Control unit 32 Base station 41 Mobile station 411 Radio unit 4111 Communication unit 4112 Communication quality measurement unit 412 Vehicle operation terminal unit 4121 Control unit 4122 Storage unit 51 Base station area 42 Mobile station 421 Radio unit 422 Vehicle operation terminal unit 52 Base station area 611 Transmission signal 612 Return signal 621 Transmission signal 622 Return signal 70 Individual communication quality information 71 Base station communication quality information 71a Base station received electric field strength 72 Mobile station communication quality information 72a Mobile station received electric field strength 73 Location information 731 Location information I
732 Location Information II
74 Used CH
75 serial number 76 base station ID
77 Communication impossible 80 Area communication quality information 33 Public network base station 53 Wireless public network 54 Wireless network 631 Individual communication quality information 632 Individual communication quality information 633 Area communication quality information 634 Area communication quality information 641 Individual communication quality information group 642 Area communication quality Information 43 Mobile station 431 Radio unit 4311 Press setting unit 4312 Communication quality measurement unit 4313 Storage unit 4314 Response wait time threshold 432 Vehicle operation terminal unit 4321 Control unit 4322 Location information acquisition unit 4323 Storage unit 9 Transmission signal 13 Return signal 17 Individual communication quality Information 18 Individual communication quality information 19 Area communication quality information 20 Area communication quality information 65 Statistical processing

Claims (10)

A base station and one or more mobile stations that perform radio communication with the base station,
The mobile station transmits a first signal to the base station;
The base station
Based on the first signal received from the mobile station, the communication quality with the mobile station is measured to generate first communication quality information,
Transmitting a second signal including the first communication quality information to the mobile station;
The mobile station
Extracting the first communication quality information included in the second signal received from the base station;
Based on the second signal, measure communication quality with the base station to generate second communication quality information,
A wireless communication system that performs transmission control to the base station based on the first communication quality information and the second communication quality information. The radio communication system according to claim 1, wherein the base station generates a level value corresponding to a measurement value in the measurement based on the first signal as the first communication quality information. The mobile station
Determining the degree of uplink communication quality with the base station based on the first communication quality information;
Determining the degree of downlink communication quality with the base station based on the second communication quality information,
The radio communication system according to claim 1 or 2, wherein the transmission control is performed in accordance with a combination of a degree of high communication quality in the uplink direction and the downlink direction. The wireless communication system further includes a host system device for managing two or more mobile stations and the base station,
Each of the mobile stations
Transmitting individual communication quality information including the first communication quality information and the second communication quality information to the host system device;
The host system device is
Based on the individual communication quality information received from the mobile station, generates area communication quality information in the communication area of the base station,
Delivering the area communication quality information to each of the mobile stations;
Each of the mobile stations
The radio communication system according to any one of claims 1 to 3, wherein transmission control to the base station is performed based on the area communication quality information and the individual communication quality information received from the higher-order apparatus. The base station
Transmitting the second signal further including identification information corresponding to the number of times of communication with the mobile station to the mobile station;
The mobile station
Further extracting the identification information contained in the second signal;
Transmitting the individual communication quality information further including the extracted identification information to the host system device;
The host system device is
Based on the identification information included in the individual communication quality information, classify the individual communication quality information received from each mobile station according to a time series, and generate the area communication quality information,
The wireless communication system according to claim 4, wherein the latest information of the area communication quality information is distributed to each of the mobile stations. The mobile station
A threshold of a waiting time until the second signal is received after the transmission of the first signal is set in advance;
The wireless communication system according to claim 4, wherein the threshold value is updated according to the area communication quality information. The mobile station
The radio | wireless communications system of any one of Claims 4 thru | or 6 which displays on map data according to the high degree of the communication quality in the said area communication quality information. Transmitting a first signal for wireless communication to the base station;
Receiving from the base station a second signal including first communication quality information measured based on the first signal received at the base station;
Extracting the first communication quality information included in the second signal;
Based on the second signal, measure communication quality with the base station to generate second communication quality information,
A mobile station apparatus that performs transmission control to the base station based on the first communication quality information and the second communication quality information. A wireless communication method between a base station and one or more mobile stations that perform wireless communication with the base station,
The mobile station transmits a first signal to the base station;
The base station is
Based on the first signal received from the mobile station, the communication quality with the mobile station is measured to generate first communication quality information,
Transmitting a second signal including the first communication quality information to the mobile station;
The mobile station is
Extracting the first communication quality information included in the second signal received from the base station;
Based on the second signal, measure communication quality with the base station to generate second communication quality information,
A wireless communication method for performing transmission control to the base station based on the first communication quality information and the second communication quality information. A process of transmitting a first signal for wireless communication to a base station;
Processing for receiving from the base station a second signal including first communication quality information measured based on the first signal received at the base station;
A process of extracting the first communication quality information included in the second signal;
Processing for measuring communication quality with the base station based on the second signal and generating second communication quality information;
A process of performing transmission control to the base station based on the first communication quality information and the second communication quality information;
Is a wireless communication program for causing a mobile station apparatus to execute.

Images