JP2008102622A - Vehicle dispatching processing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To shorten vehicle dispatching processing time for a plurality of mobile stations when character data of the same dispatching contents are transmitted from a base station to the plurality of mobile stations, eliminate the missing of an acknowledge return signal due to the conflict, and improve the efficiency of receiving the acknowledge return signal. <P>SOLUTION: When vehicle dispatching processing by character data of the same contents is performed to a plurality of mobile stations 11, 12, 13, etc. in a taxi wireless system, the information showing the order in which the mobile stations transmit the acknowledge return signal is added to the polling data of the vehicle dispatching notice transmitted from the base station. The mobile stations 11, 12, 13, etc. that have received the polling data from the base station notify the drivers that they should perform the acknowledge operation. If the acknowledge button is operated during the acknowledge awaiting time m, the acknowledge return signal is repeatedly transmitted to the base station a plurality of times in the predetermined order from the time t2 immediately after the button operation to the acknowledge transmission timing n. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicle allocation processing system such as an AVM (Automatic Vehicle Monitoring) system for taxi allocation using commercial radio, and more particularly to a vehicle allocation processing system for ordering a plurality of vehicles in the all-car polling system.

  In a taxi radio system such as a conventional AVM system for taxi dispatch, the mobile station itself detects and stores the current position of the vehicle (taxi) as a mobile station by GPS (Global Positioning System: positioning system using artificial satellites). ing. Each mobile station returns position dynamics information to and from the base station in a dedicated transmission slot assigned to each vehicle number in accordance with a periodic polling signal from the base station. The base station polls all the mobile stations in order and grasps the position dynamic information of all the mobile stations. There is at least one base station connected to the management center, and the management center searches for the optimal vehicle from the location dynamic information of the mobile station according to the request from the taxi customer and dispatches the taxi vehicle. There are a method of directly instructing the mobile station by voice as a method of dispatching, and a method of instructing by transmitting the dispatch information to the mobile station by transmitting character data.

  When dispatching to a mobile station by transmitting character data, if there are multiple orders for the same dispatch details, the management center sends one set of character data with the same dispatch details to the mobile station for the required number via the base station. In order, send dispatch information. On the other hand, when the mobile station receives the allocation information by character data transmission, the mobile station performs an acknowledgment operation, and then transmits an acknowledgment return signal to the base station at a necessary timing.

  FIG. 6 is a configuration diagram of a character dispatch data signal in the conventional taxi radio system. The character allocation data signal is composed of a vehicle number (vehicle number) 1 and character allocation data 2 of the mobile station, and has a configuration in which the vehicle number 1 for instructing allocation is set before the character allocation data 2 for each mobile station. Yes.

  FIG. 7 is an implementation timing diagram of conventional character data dispatching when dispatching to a plurality of mobile stations. FIG. 7 shows the timing when the character dispatch data is transmitted to the three mobile stations 1, 2, and 3.

  When the base station receives the vehicle allocation information from the management center, the base station transmits the character allocation data with the vehicle number added to the mobile station 1 as shown in FIG. The mobile station 1 that matches the vehicle number of the corresponding local station receives and displays the character allocation data, and the crew member of the mobile station 1 operates the OK button during the OK waiting time m after confirming the display. When the acknowledge button is operated, the mobile station 1 transmits an acknowledgment return signal at the timing as shown in FIG. 7B, and the base station that has received the acknowledgment return signal transmits it to the management center.

  Next, the base station transmits character allocation data to which the vehicle number is added to the mobile station 2. The mobile station 2 that matches the vehicle number of the corresponding local station receives and displays the character allocation data, and the crew of the mobile station 2 confirms the display and then operates the OK button during the OK waiting time m. When this acknowledge button is operated, the mobile station 2 transmits an acknowledge return signal at that timing, as shown in FIG. In the same manner, the base station repeats the above processing for the number of vehicles of the mobile station that dispatches the vehicle.

  In addition, when the contents of the character dispatch data are the same, that is, when a plurality of dispatch processes are performed with the same dispatch contents, the base station performs the above dispatch process for the number of dispatched cars. For this reason, when the same character dispatch data is transmitted to a plurality of mobile stations, for example, three mobile stations, the total character data dispatch time T1 is “data transmission time t × 3 times + acknowledge wait time m × 3 times”. It takes a lot of time.

Further, as a known technique related to the present invention, a taxi dispatch AVM system comprising a plurality of mobile stations that transmit the vehicle number of the host vehicle and a base station that receives and processes information sent from each mobile station, etc. In this wireless communication system, a technique is known in which the base station simultaneously performs data collection and polling instruction by polling that periodically collects position dynamic information of all mobile stations in the order of vehicle numbers (see, for example, Patent Document 1). .)
JP 2005-268999 A

  In the above-mentioned conventional character data dispatch method, when delivering data to a mobile station using character data transmission, if there are multiple orders for the same dispatch details, the base station moves the required number of text data for the same dispatch details. The dispatch information is transmitted to the station one by one in turn, and when the mobile station receives the dispatch information by character data transmission, after performing the consent operation, the mobile station transmits an acknowledgment return signal at a necessary timing. The above-mentioned character data related to vehicle allocation is a large amount of data such as the location and name of the vehicle allocation, and it takes time to transmit. is necessary. For this reason, in a large-scale system that needs to perform many dispatch processes in a short time, there is a problem that the dispatch process for a plurality of orders with the same dispatch contents cannot be performed in a short time.

  The present invention has been made to solve the above-mentioned problems, and the object of the present invention is to enable batch transmission processing when transmitting character data of the same dispatch contents to a plurality of mobile stations, In addition, synchronize acknowledgment signals transmitted from mobile stations so that they can be received without omissions due to collisions, and perform dispatch processing for multiple orders with the same dispatch contents in a short time even for systems with hundreds of mobile stations. Dispatch processing that can improve the reception rate of the acknowledgment return signal by using the acknowledgment waiting time that is the period of pressing the acknowledgment button and synchronizing immediately after pressing the acknowledgment button and sending the acknowledgment return signal multiple times To provide a system.

  The present invention relates to a mobile station that transmits a vehicle number and positional dynamic information by a wireless device, and a base station that collects positional dynamic information from the mobile station by polling and transmits vehicle allocation information to the mobile station to perform vehicle allocation processing. When the base station issues the same dispatch instruction to a plurality of mobile stations, the base station transmits an acknowledgment return signal together with the dispatch information in polling data. Transmitting means for adding information indicating the order and transmitting the information in a lump, and the mobile station that has received the dispatch instruction from the base station immediately after the approval operation is performed during an approval operation performed during a predetermined approval waiting time. And a means for transmitting an acknowledge return signal to the base station a plurality of times in the order instructed by the base station.

  In addition, when the base station receives the acknowledgment return signals from all the mobile stations instructed to dispatch, the base station discards the acknowledgment return signals sent thereafter and proceeds to the next processing.

  According to the present invention, it is possible to simultaneously dispatch the same dispatch information to a plurality of mobile stations, and it is possible to prevent the lack of an acknowledgment return signal due to a collision by synchronizing the acknowledgment return signals from each mobile station. Even if the mobile station is a large-scale system having several hundred units, for example, it is possible to perform the dispatch process for a plurality of orders with the same dispatch contents in a short time and with certainty.

  In addition, when the base station receives an acknowledgment return signal from all the mobile stations instructed to dispatch, the base station discards the acknowledgment return signal sent thereafter and proceeds to the next processing, thereby improving the processing efficiency. be able to.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a configuration example of a vehicle allocation processing system according to an embodiment of the present invention, and shows an example in a case where it is implemented in a taxi vehicle allocation AVM system using GPS.

  In FIG. 1, reference numerals 11, 12, 13, and 14 are mobile stations mounted on a vehicle (taxi), which are in normal operation (business) and receive instructions sent from the management center 20 via the base station 21. It shows the status of receiving work.

  Reference numerals 21, 22, and 23 are base stations for the dispatch processing system. Generally, the base stations 21, 22, and 23 have a function of performing bidirectional communication with the mobile stations 11, 12,... Using radio waves and managing radio waves that are limited resources. In this case, since the range in which the radio wave reaches is limited, for example, the base station 21 can communicate with the mobile stations 11, 12, 13, and 14 within the base station cover area 25 where the radio wave reaches.

  The base station 21 collects data for each mobile station 11, 12,. That is, the base station 21 transmits a polling signal P1 to each mobile station 11, 12,... And polling signal replies P11, P12, P13 from each mobile station 11, 12,. , P14 is used to collect data on the position status information of each of the mobile stations 11, 12,... In the order of vehicle numbers based on the mobile station vehicle numbers designated from the management center 20.

Further, the base station 21 indicates the current state of the vehicle from the mobile station by polling with the mobile stations 11, 12,..., For example, “actual vehicle”, “empty vehicle”, “arrival vehicle”, “get off” Vehicle information is collected and transmitted to the management center 20.
As a business wireless communication method between the base station 21 and the mobile stations 11, 12,... For data collection by the polling method, for example, a digital SCPC (Single Channel Per Carrier) wireless system (narrowband digital communication method standard ARIB) In accordance with STD-T61, a communication system using a channel configured by frequency division is used.

  The management center 20 is connected to the base stations 21, 22, and 23 through a dedicated line 27 and the mobile stations 11, 12, 13, and 14 that collect data via the base station 21 according to requests from taxi customers. The taxi vehicle is allocated by searching for the optimal vehicle based on the position dynamic information.

  FIG. 2 shows a configuration of a character dispatch data signal in polling data transmitted from the management center 20 via the base station 21. (a) is a basic data configuration, and (b) is a plurality of mobile stations. It is an example in the case of dispatching with the same content. As shown in FIG. 2 (a), the character allocation data signal basically includes a vehicle number (vehicle number) 31 of a mobile station that issues a vehicle allocation instruction before character allocation data 32 including the location and name of the vehicle allocation. In the set configuration, when the same contents are allocated to a plurality of mobile stations, as shown in FIG. 2B, the vehicle number 31a of each mobile station that gives a dispatch instruction before the character dispatch data 32, 31b,... Are set in order. That is, when dispatching a plurality of vehicles (taxi) with the same contents, data indicating the order for the vehicle to transmit the acknowledgment return signal is input into the polling data of the dispatch notification transmitted from the base station 21 in advance. ing. FIG. 2B shows an example in which the vehicle numbers 31a, 31b, and 31c of the three mobile stations that give a dispatch instruction are sequentially set before the character dispatch data 32.

  FIG. 3 shows a configuration example of the mobile stations 11, 12,... In the AVM system for taxi dispatch. In addition, since the structure of each mobile station 11, 12, ... is the same, the mobile station 11 is demonstrated.

  In FIG. 3, reference numeral 41 denotes an AVM operation indicator. An AVM radio unit 42, a GPS receiver 44, a charge meter 46, and the like are connected to the AVM operation indicator 41.

  The AVM operation display 41 includes a display unit 411 and an operation unit 412 and an information processing unit 413 such as a CPU. Further, the AVM operation indicator 41 is provided with an indicator lamp for displaying an operation state, for example, an LED 414. The display unit 411 uses, for example, a liquid crystal display panel, and can display kanji, kana, English, numbers, etc., and displays standby places, destinations, customer information, and operation instructions to crew members. indicate. The operation unit 412 includes function keys such as “response” and “accept” in addition to character input keys and cursor keys. The information processing unit 413 performs a control process for the entire mobile station, and when, for example, polling data is received from the base station 21, displays a message on the display unit 411 so that the crew member operates the OK button and turns on the LED 414. Control.

The AVM wireless unit 42 includes an antenna 43 for wireless communication, and performs wireless communication with the base station 21 and the other mobile stations 11, 12,... Using a commercial wireless, for example, a digital SCPC wireless system.
The GPS receiver 44 receives the radio wave from the GPS satellite 26 by the GPS antenna 45 and acquires the current position information. This current position information is sent to the information processing unit 413 of the AVM operation indicator 41, and transmitted to the base station 21 as position dynamic information from the AVM radio unit 42 together with the respective vehicle numbers according to a periodic polling signal from the base station 21. Is done.

  The fare meter 46 includes a fare display unit 461 for displaying a taxi fare, a “actual vehicle” button 462, an “empty vehicle” button 463, an “arrival” button 464, a “get off” button 465, and a receipt issuing printer 466 It has.

Next, in the above-described embodiment, a basic operation when the character data is dispatched by the management center 20 will be described with reference to a timing chart shown in FIG.
When the management center 20 transmits character data having the same dispatch details to a plurality of mobile stations, as shown in FIGS. 2B and 4A, a plurality of mobile stations are placed in front of the same character dispatch data 32. The vehicle numbers 31a, 31b,... Are set in order and sent to the base station 21 together with a polling signal. When the base station 21 transmits a polling signal, the character allocation data signal received from the management center 20, that is, the character allocation data signal in which a plurality of mobile station vehicle numbers 31a, 31b,. Send to the mobile station in batch. FIG. 4 shows the transmission timing of base station dispatch data and the acknowledgment return signal transmitted by the mobile station when dispatching to three mobile stations 11, 12, and 13.

  The mobile stations 11, 12,... Receive the character allocation data sent from the base station 21 by the AVM radio unit 42, and determine whether or not it matches the vehicle number of the own station. The mobile station that matches the vehicle number 31 of the received character allocation data and the vehicle number of its own station, in this case, the mobile stations 11, 12, and 13, receives the received character allocation data from the information processing unit in the AVM operation display 41. Under the control of 413, the information is displayed on the display unit 411 and the LED 414 is displayed to instruct the operation of the OK button. At this time, the information processing unit 413 of each of the mobile stations 11, 12, 13 recognizes and stores the rank of the local station number in the vehicle numbers 31 a, 31 b, 31 c set in the character allocation data 32.

  The crew of each mobile station 11, 12, 13 confirms the display contents on the display unit 411, and then, during the understanding waiting time m set after the received character dispatch data 32 as shown in FIG. Operate the OK button. The acknowledgment waiting time m is required for several seconds, and is set to about 8 seconds, for example.

  When the approval button is operated, the information processing unit 413 of each of the mobile stations 11, 12, and 13 performs a predetermined order, for example, FIG. 4B, at the approval transmission timing n set after the approval waiting time m. As shown in (d), the timing is determined in accordance with the rank of the local station number set in front of the character dispatch data 32 in advance, and the acknowledgment return signal is transmitted from the AVM radio unit 42 to the base station 21 in order. The acknowledgment transmission timing n is several tens of ms, which is very short compared to the acknowledgment waiting time m.

  When the base station 21 receives the acknowledge return signal transmitted from the mobile stations 11, 12, and 13, the base station 21 transmits the acknowledge return signal to the management center 20. As a result, the management center 20 confirms that the mobile stations 11, 12, 13 have received the character allocation data 32 and have accepted it.

  According to the above method, the character data dispatch total time T2 for a plurality of mobile stations is a time of “data transmission time t × 1 + acknowledgment waiting time m × 1” as shown in FIG. This makes it possible to dispatch to multiple mobile stations. In addition, since the acknowledgment return signals are transmitted from the mobile stations 11, 12, and 13 to the base station 21 sequentially at different timings, it is possible to reliably prevent omission due to the collision of the acknowledgment return signals.

  Next, a vehicle allocation processing system capable of performing character data allocation processing for a plurality of mobile stations more efficiently will be described with reference to a timing chart shown in FIG. 5 shows the transmission timing of the base station dispatch data and the transmission of the acknowledgment return signal by the mobile station when dispatching to the three mobile stations 11, 12, 13 as in the case of FIG. Yes.

  As shown in FIG. 4, when performing character data dispatch with the same contents to a plurality of mobile stations, a plurality of mobile station vehicle numbers 31a, 31b,... Are sequentially set before the same character dispatch data 32. Then, transmission is performed from the management center 20 in a lump, and the mobile station can synchronize with the order of the vehicle numbers and transmit an acknowledgment return signal, thereby making it possible to perform the dispatch processing time for a plurality of mobile stations in a short time. However, even if the operation of the OK button at the mobile station is performed at an early timing during the acknowledgment waiting time m, the acknowledgment return signal is not transmitted until the acknowledgment transmission timing n after the acknowledgment waiting time m elapses. Transmission of the acknowledgment return signal is delayed due to time. The acknowledgment waiting time m is the operation waiting time of the crew member of the mobile station and takes a longer time than the acknowledgment transmission timing n, and thus greatly affects the transmission timing of the acknowledgment transmission signal.

  For this reason, in the method shown in FIG. 5, when the acknowledgment button is operated during the acknowledgment waiting time m, the mobile stations are synchronized immediately after that, and the acknowledgment return signal is transmitted to the base station from within the acknowledgment waiting time m. By doing so, the waiting time from the operation of the OK button to the OK transmission timing n is eliminated, and the details will be described below.

  When the management center 20 transmits character data having the same dispatch details to a plurality of mobile stations, as shown in FIGS. 2 (b) and 5 (a), the management center 20 has a plurality of mobile stations in front of the same dispatch data 32. The vehicle numbers 31a, 31b,... Are set in order and sent to the base station 21 together with a polling signal. When the base station 21 transmits a polling signal, the character allocation data signal received from the management center 20, that is, the character allocation data signal in which a plurality of mobile station vehicle numbers 31a, 31b,. Send to the mobile station in batch.

  The mobile stations 11, 12,... Receive the character allocation data sent from the base station 21 by the AVM radio unit 42, and determine whether or not it matches the vehicle number of the own station. The mobile station that matches the vehicle number 31 of the received character allocation data and the vehicle number of its own station, in this case, the mobile stations 11, 12, and 13, receives the received character allocation data from the information processing unit in the AVM operation display 41. Under the control of 413, the information is displayed on the display unit 411 and the LED 414 is displayed to instruct the operation of the OK button. At this time, the information processing unit 413 of each of the mobile stations 11, 12, 13 recognizes and stores the rank of the local station number in the vehicle numbers 31 a, 31 b, 31 c set in the character allocation data 32.

  The crew of each mobile station 11, 12, 13 confirms the display content of the display unit 411, and then, during the understanding waiting time m set after the received character allocation data 32 as shown in FIG. Operate the OK button. At this time, it is assumed that the crew members of the mobile stations 11, 12, and 13 have completed pressing the OK button at time t 1 within the approval waiting time m, for example.

  The information processing unit 413 of each of the mobile stations 11, 12, 13, when the acknowledgment button is operated at the time t 1, immediately after that, that is, a predetermined order from the time t 2 within the acknowledgment waiting time m, for example, FIG. As shown in (d) to (d), the timing is determined in accordance with the rank of the local station number set in front of the character dispatch data 32 in advance, and the acknowledgment return signal is repeatedly transmitted from the AVM radio unit 42 to the base station 21 a plurality of times. In this case, the acknowledgment return signals of the mobile stations 11, 12, and 13 are sequentially and repeatedly transmitted from the time t2 within the acknowledgment waiting time m to the acknowledgment transmission timing n. The acknowledgment transmission timing n is several tens of ms, which is a very short time compared to the acknowledgment waiting time m (several seconds), so that the acknowledgment return signal can be transmitted at the acknowledgment waiting time m.

  At the timing t1, for example, when only the mobile station 11 and the mobile station 13 operate the acknowledgment button, no acknowledgment return signal is output at the timing of the mobile station 12. That is, only the mobile station for which the OK button has been operated takes a timing according to the order instructed by the base station 21 immediately thereafter, and transmits an OK return signal to the base station 21 repeatedly.

  When the base station 21 receives the acknowledgment return signal sent from the mobile stations 11, 12, 13, it transmits this acknowledgment return signal to the management center 20, and the mobile stations 11, 12, 13 receive the character dispatch data 32. Confirm that you understand. In this case, if the base station 21 can receive the acknowledgment return signals from all the mobile stations 11, 12, 13 during the acknowledgment waiting time m, it discards all the acknowledgment return signals sent thereafter. Then move on to the next process.

  As shown in the above embodiment, in the case where character data dispatch with the same contents is performed for a plurality of mobile stations, the mobile stations 11, 12,... That have received the character dispatch data 32 sent from the base station 21. When the acknowledgment button is operated during the acknowledgment waiting time m, the acknowledgment button is operated immediately after that, that is, by transmitting an acknowledgment return signal to the base station 21 without waiting for the completion of the acknowledgment waiting time m. Can be eliminated, and the time from when the character dispatch data 32 is received to when the acknowledgment return signal is transmitted can be shortened.

  Further, by synchronizing the acknowledgment return signals between the mobile stations 11, 12,..., It is possible to eliminate the lack of the acknowledgment return signals due to collision. Further, by receiving the acknowledgment signal repeatedly from the mobile station 11, 12,... To the base station 21, the reception rate of the acknowledgment signal at the base station 21 can be improved. Further, when the base station 21 receives the acknowledgment return signals from all the mobile stations 11, 12,... That have been instructed to dispatch, the base station 21 discards the acknowledgment return signals sent thereafter and proceeds to the next processing. , Processing efficiency can be improved. Therefore, even if the mobile station is a large-scale system having several hundred units, for example, it is possible to efficiently perform a dispatch process for a plurality of orders with the same dispatch contents in a short time.

  In the above embodiment, the transmission timing of the acknowledgment return signal of each mobile station is determined by sequentially setting a plurality of mobile station vehicle numbers 31a, 31b,... In addition, for example, data indicating the transmission order of the acknowledgment return signal may be set together with the mobile station vehicle numbers 31a, 31b,.

  In the above-described embodiment, the case where the GPS receiving unit 44 receives radio waves from the GPS satellite 26 to acquire the current position information has been described. However, for example, a car navigation system including a GPS receiving unit and a GPS map display unit. A device may be installed and the current position information acquired by the car navigation device may be used.

  Further, the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage.

It is a figure which shows the structural example of the AVM system for taxi dispatch using GPS which concerns on one Embodiment of this invention. It is a figure which shows the structural example of the character dispatch data signal in the embodiment. It is a block diagram which shows the structural example of the mobile station in the embodiment. 4 is a timing chart showing basic operations when dispatching to three mobile stations in the embodiment. 6 is a timing chart showing another example of operation when a vehicle is allocated to three mobile stations in the embodiment. It is a block diagram of the character dispatch data signal in the conventional character data dispatch system. It is a figure which shows the operation | movement timing of the conventional multi-character data dispatch system.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11, 12, 13, 14 ... Mobile station, 20 ... Management center, 21, 22, 23 ... Base station, 25 ... Base station coverage area, 26 ... GPS satellite, 27 ... Dedicated line, 31, 31a, 31b, 31c ... Vehicle number, 32 ... character allocation data, 41 ... AVM operation indicator, 411 ... display part, 412 ... operation part, 413 ... information processing part, 414 ... LED, 42 ... AVM wireless part, 43 ... antenna for wireless communication, 44 ... GPS receiving unit, 45 ... GPS antenna, 46 ... fee meter, 461 ... fee display unit, 462 ... "actual car" button, 463 ... "empty car" button, 464 ... "arrival" button, 465 ... "get off" button, 466 ... Printer

Claims (2)

A mobile station that transmits a vehicle number and position dynamic information by a wireless device, and a base station that collects position dynamic information from the mobile station by polling and transmits vehicle allocation information to the mobile station to perform vehicle allocation processing. A vehicle allocation processing system,
When the base station gives the same dispatch instruction to a plurality of mobile stations, the base station adds information indicating the order for the mobile station to transmit the acknowledgment return signal together with the dispatch information in the polling data and transmits the same collectively. The mobile station that has the transmission means and has received the dispatch instruction from the base station transmits an acknowledgment in the order instructed by the base station immediately after the acknowledgment operation by an acknowledgment operation performed during a predetermined acknowledgment waiting time. A vehicle allocation processing system comprising means for transmitting a signal to the base station a plurality of times.   The base station, when receiving an acknowledgment return signal from all mobile stations instructed to dispatch, discards the acknowledgment return signal sent thereafter and proceeds to the next processing. Vehicle dispatch processing system as described.

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