TW490963B - Wireless data transmission method - Google Patents

Abstract

The invention relates to a wireless data transmission method, which is used in a wireless communication equipment and a transportation means installed with the wireless communication equipment. The wireless communication equipment will perform the following procedures; detect the speed of the transportation means and use a wireless transmission method in terms of the speed to transmit a data to a control center, that is to achieve the goal of adaptive control by categorizing the transmission speed in terms of the speed of the transpiration means as several classes and using certain transmission speed at corresponding speed of the transportation means to transmit data.

Description

490963 _Case No. 89101049_ Year Month Revision_ V. Description of the Invention (1) This case is a wireless data transmission method, especially a wireless modem with various status display functions and working mode switching. The function of the modem is mainly to serve as a bridge between the computer and the remote computer host, so that the computer and the remote computer host (h 0st) can transmit data or signals through a telephone line or other transmission media. Its development It has changed from the early wired type to the wireless type (wire 1 ess).

The working principle of the wireless modem is similar to the working principle of a common mobile phone (handset). It must rely on the base station or the telephone host (base) to work properly. The base station is responsible for connecting with the remote computer host, and then data or signals The radio frequency signal communicates with the wireless modem. Therefore, the wireless modem can work normally in the area covered by the base station signal, eliminating the need for telephone wiring in the early days. With the popularity of satellite global positioning system (GPS), of course, the development of wireless modems is also affected by GPS, so products combining wireless modems and GPS have come out, and the use of such products is currently seen in automotive dispatch systems on. The conventional car dispatching system basically includes a control center and a car that can be monitored by the control center. The car is equipped with wireless communication equipment, such as a wireless modem, which can be detected in the area covered by the base station and displayed in the control. The center monitor provides a reference for the control center to dispatch vehicles.

The transmission of conventional wireless data is usually to transmit data at a certain transmission rate, such as mobile phones, mobile phones, or other wireless communication equipment. However, such a method has the disadvantage of wasting resources in car scheduling. The control center of the car dispatching system generally only needs to know the position of the car,

Page 4 490963 _Case No. 89101049_ Year and month amendment_ V. Description of the invention (2) The car can be used for scheduling, and the car is basically fast or slow or stopped, and the wireless data transmission in the meantime For fixed-rate transmission, when the car is running slowly or stopped, the transmission of too many similar positioning data back to the control center is basically not conducive to the monitoring of the dispatching system. Instead, because the data transmission is too frequent, an additional data transmission fee must be paid. The transmission of wireless data base stations is of course based on volume. The more transmission volume, the more expensive the payment. The purpose of this case is to propose an adaptive control (adaptivec ο ntr ο 1) wireless data transmission based on the above-mentioned conventional shortcomings, which can effectively transmit data and enable the car to transmit data at a lower transmission rate when driving at low speeds. This reduces the cost of data or data transmission.

In order to achieve the above purpose, this case proposes a wireless data transmission method, which is used in a wireless communication device and a vehicle provided with the wireless communication device, and the wireless communication device performs the following steps: detecting the The speed of the vehicle; and

According to the speed of the vehicle, a data is transmitted to a control center by a wireless transmission method. The vehicle is a car, the control center is a computer host, and the wireless communication device is a wireless data. (Wire 1 essm ode); the wireless modem includes a cellular digital packet data (CDPD) communication module and a global positioning (GPS) communication module; the data is the global positioning of the wireless modem (GPS) communication module receives data sent from a GPS satellite. As described in the method of transmitting wireless data (da ta), in response to the fast driving of the vehicle, the data is transmitted to the control center at a small interval, and when the vehicle is driving slowly, the data It was transmitted to the control center at a longer interval, and when the vehicle stopped, the

Page 5 490963 _Case No. 89101049_ Year Month Revision _ V. Description of the invention (3) Data transmission to the control center is stopped. The wireless data transmission method as described above, wherein the data includes the latitude, longitude, speed, direction and other data of the vehicle, so as to return to the control center through the CDPD communication module, so that the control center can grasp the traffic Whereabouts of the tool. The method for transmitting wireless data (d a t a) as described above, wherein the wireless communication method is a C D P D communication method.

Page 6 490963 _Case No. 89101049_ Year and month revision_ V. Description of the invention (4) Detailed description: As shown in Figure 1, the car 1 1 has a GPS communication module 14 and a CDPD communication module with a wireless modem. Group 15, both of which can be controlled by the controller 12 'to receive the positioning data of the GPS satellite 17 through the GPS antenna 141 and the CDPD antenna 151, respectively, and transmit the data of the wireless modem back to the control center 16. In this way, the control center can control the car's whereabouts through the returned data (including positioning data), thereby achieving the purpose of dispatching cars.

The difference is that the conventional wireless modem does not detect the speed of the car, so when the car is moving slowly, it still sends data back to the control center, which causes waste in transmission costs. However, the controller 1 2 of the wireless modem in this case can detect the speed of the car by using the speed signal S 1 and perform transmission speed according to whether the speed of the car is fast or slow.

Page 7 490963 _Case No. 89101049_ Revised Year of the Month _ V. Description of the Invention (5) Adjustments: When the speed of the car becomes slower, the transmission rate can be slowed down in a timely manner. When it is slow, less data is transmitted back to the control center, and the control center can still grasp the car's whereabouts based on the returned data and use it to dispatch the car. FIG. 2 is a flowchart of a preferred embodiment of the present invention. The steps are as follows: 1: Start. 2: Detect the speed of the car. The speed can be detected by the speed signal S 1. 3: Determine whether the vehicle speed is less than the speed limit. If it is not less than the speed limit, the data is transmitted at a higher transmission rate, or at a normal transmission rate.

data. 4: Determine whether the vehicle speed is zero. If the vehicle speed is not zero, it means that the car is running at a slow speed, so the data can be transmitted at a lower transmission rate, which can reduce the transmission cost. 5: If the vehicle speed is zero, data transmission is stopped, and the transmission cost can be reduced here.

Generally speaking, the wireless data transmission method proposed in this case can be used in a wireless communication device and a car provided with the wireless communication device, and the wireless communication device can detect the speed of the vehicle. In response to the fast driving of the car, the data is transmitted to the control center at a small interval, and when the car is running at a slow speed, the data is transmitted to the control center at a longer interval, and in the traffic When the tool stops, the data stops being transmitted to the control center. In practice, of course, it is not limited to the flowchart in Figure 2. It can also divide the transmission rate into speeds, such as between zero and one hundred speeds

Page 8 Case number 89101049

V. Description of the invention (6) 1 2 0 0 '51.2 kbps' The transmission rate is also gradually divided into 10 transmission rate levels, the transmission rates are 0, 6 Q 〇 2400, 4800, 9600, 14400, 19.2K, 36 The transmission rate is obps when the speed is 6k per hour. As the speed gradually increases, the highest transmission rate is 51 when the speed exceeds one hundred per hour. Is much higher, so that the purpose of adaptive control can be achieved. According to Sun Jiran, the f-system center is equipped with a computer host, and the wireless modem. The wireless modem is a packet data (cdpd) communication module and a global fixed number, and. The side data is the data received from a GPS satellite by the global fixed-line 1V industrial fruit group of the wireless modem. The data is S »δ η Ai Tongtong tool's experience A ^ .. The CDPD communication model is transmitted through 02, speed, direction, special breeding materials, so as to pass the track of the tool. Dedicated control center to enable the control center to master the traffic number ί ί ί Ϊ Ϊ special, lies in the car control which is different from the conventional steam dispatching system, to pass the number of rounds to adaptability control (adaptive transmission waste according to the vehicle speed, Regardless of this, you can greatly reduce unnecessary steps, and such a design, f or in efficiency, is better than conventional technology. It is not conventional to raise a patent according to law, so it is novel. Application is also published.

Page 9 490963 _Case No. 89101049_Year Month Date__ V. Description of the Invention (7) This case may be modified by people skilled in the art who are skilled in craftsmanship, but they can not be separated from those who want to protect the scope of the patent application. . 490963 _Case No. 89101049_ Year Month Amendment _ Brief Description of Drawings This case can be understood in more depth by the following drawings and detailed descriptions: Figure 1: System block of the preferred embodiment of the case. Figure 2: Flow chart of the preferred embodiment of this case. The picture is not edited. 5 Tigers 1 1: Car 1 2: Controller 1 4: G PS Communication Module 1 5: CDPD Communication Module 1 6: Control Center

17: GPS satellite S1: speed signal

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Claims (1)

490963 89101049_Year Month Day Amendment __ VI. Please 1. A method of wireless data transmission is used in a wireless communication device and a vehicle provided with the wireless communication device, and the wireless communication device is The following steps are performed: detecting the speed of the vehicle; and transmitting a data to a control center by a wireless transmission method in accordance with the speed of the vehicle; wherein the vehicle is a car and the control center is equipped with a A computer host, and the wireless communication device is a wireless modem; the wireless modem includes a cellular digital packet data (CDPD) communication module and a global positioning (GPS) communication module; the data It is the data received from a GPS satellite by the Global Positioning (G PS) communication module of the wireless modem. 2. The method of wireless data transmission as described in item 1 of the scope of patent application, in which the data is transmitted to the control center at a small interval due to the fast driving of the vehicle, and the vehicle When driving at a slow speed, the data is transmitted to the control center at a longer interval, and when the vehicle stops, the data stops transmitting to the control center. 3. The method of wireless data transmission as described in item 1 of the scope of patent application, wherein the data includes data such as the latitude, longitude, speed, and direction of the vehicle, so as to be transmitted back to the control center through the CDPD communication module So that the control center can grasp the whereabouts of the vehicle. 4. The method for transmitting wireless data (d a t a) according to item 1 of the scope of patent application, wherein the wireless communication method is a CDPD communication method. Page 12 2002.03.19.012