JPH03129948A - Data radio transmission method and radio communication equipment - Google Patents

Abstract

PURPOSE:To improve the processing efficiency by implementing independently the transfer of a transmission data from a transmission side information processor to a transmission side radio communication equipment, the transmission of a data from the transmission side radio communication equipment to a reception side radio communication equipment and the transfer of a reception data from the reception side radio communication equipment to a reception side information processor respectively. CONSTITUTION:The transfer of a transmission data DT from a personal computer 10 to a radio MODEM 30, the radio transmission of a data from the radio MODEM 30 to a reception side radio MODEM 40 being a communication opposite party and the transfer of the reception data DT from the reception side radio MODEM to a personal computer 20 are implemented independently respectively. Thus, the personal computers 10, 20 have only to be controlled only when the transmission data is transferred to the radio MODEM 30 and the reception data is transferred from the radio MODEM 40.

Description

Detailed Description of the Invention [Object of the Invention] (Industrial Application Field) The present invention relates to a wireless data transmission system used when transmitting data wirelessly between, for example, two personal computers via a wireless modem device. METHODS AND WIRELESS COMMUNICATION APPARATUS.

(Prior Art) In recent years, a system has been considered in which data is wirelessly transmitted between two personal computers installed in an office or the like by using radio waves with a small power of about 10 mW. Figure 5 shows an example of the configuration of this type of system, which consists of two personal computers 1.2 and two wireless modem devices attached to these personal computers 1.2. It is composed of M3 and M4.

In such a system, let us now consider a case where data is wirelessly transmitted from personal computer 1 to personal computer 2, for example. personal computer 1
First, it outputs a control signal C8 to the wireless modem device 3, thereby requesting a wireless line connection. Then,
The wireless modem device 3 uses the control unit 39 to execute a predetermined procedure for establishing a wireless line connection with the wireless modem device 4 as the communication partner. As for the wireless line connection method, for example, a multi-channel access method is used in which an empty channel is selected from among a fixed number of wireless channels commonly assigned to a large number of personal computers to establish a connection.

When a wireless line is established between the wireless modem device 3 on the transmitting side and the wireless modem device 4 on the receiving side, the personal computer 1 then starts transferring the transmission data DT to the wireless modem device 3. .

Then, the radio modem device 3 sequentially inputs the transmission data DT to the conversion circuit 32.42 via the input interface 31, where it is converted into data for radio transmission to which an error correction code is added, for example.

Then, the transmitter 33 modulates a carrier wave made of, for example, a quasi-microwave using the PSK modulation method using this wireless transmission data, and transmits this modulated carrier wave from the transmitting antenna 34 toward the wireless modem device 4 on the receiving side.

On the other hand, when the wireless modem device 4 on the receiving side receives a wireless line connection request from the wireless modem device 3 on the transmitting side, it notifies the personal computer 2 of this fact. Then, according to the instructions from the personal computer 2, a wireless line connection procedure is executed with the wireless modem device 3 on the transmitting side according to a predetermined procedure, and once the wireless line is set up, from then on, the wireless modem device 3 on the transmitting side Performs reception and transfer operations for sent data. That is, data sent from the wireless modem device 3 on the transmitting side is received and demodulated by the receiver 46 via the receiving antenna 45, and then subjected to error correction processing etc. in the conversion circuit 47, and then converted to original data. Ru. This received data is then transferred to the personal computer 2 via the output interface 48.

When the personal computer 1 on the sending side runs out of data to send, the personal computer 1 notifies the personal computer 2 on the receiving side of the completion of transmission, and also gives an instruction to the wireless modem device 3 to open the wireless line. Therefore, the wireless modem device 3 executes a procedure for releasing the wireless line set up with the receiving side wireless modem device 4, and releases the wireless line. On the other hand, when the personal computer 2 on the receiving side is notified of the end of transmission from the personal computer 1 on the sending side, it instructs the wireless modem device 4 to open the wireless line, thereby opening the wireless line.

Incidentally, the same process is performed when data is wirelessly transmitted from the personal computer 2 to the personal computer 1. However, in this case, the wireless modem device 4 becomes the transmitting side, and the input interface 41, the conversion circuit 42, and the transmitter 4
3 and the transmitting antenna 44, while the wireless modem device 3 becomes the receiving side and transmits the data through the receiving antenna 35.
, a receiver 36 , a conversion circuit 37 and an output interface 38 .

(Problems to be Solved by the Invention) However, such conventional systems have the following problems. That is, in this conventional system, a personal computer 2 manages a series of data transmission operations from the start to the end of data transmission. Therefore, during the wireless line connection control period and data transmission period, the personal computer 1.2 must exclusively control the wireless data transmission, and even if it has higher processing capacity, Even if it does, other controls cannot be performed. Therefore, the capabilities of the personal computers 1 and 2 are not used effectively, resulting in a decrease in processing efficiency.

In particular, when a multi-channel access method is used as the wireless line connection method or when the condition of the wireless line is deteriorated, it takes a lot of time to control the wireless line connection. Further, even during data transmission, if the condition of the wireless line is degraded, procedures such as retransmission may be repeated, and wireless data transmission may take a lot of time. For this reason, in conventional systems in which a personal computer is dedicated to controlling data transmission,
The amount of time a personal computer spends exclusively on wirelessly transmitting data is extremely long, during which time it cannot perform any other control, resulting in a significant drop in processing efficiency.

Therefore, the present invention focuses on the above-mentioned circumstances, and an object of the present invention is to provide a data wireless transmission method and a wireless communication device that eliminate the need for an information processing device to exclusively perform data wireless transmission operations, thereby increasing the processing efficiency of the information processing device. purpose.

[Configuration of the Invention (Means for Solving the Problems) In order to achieve the above object, the present invention takes the following measures. That is, when data is wirelessly transmitted from a first information processing device to a second information processing device via the first and second wireless communication devices attached to these information processing devices, first the above-mentioned first information is transmitted. A data transfer path is formed between the processing device and the first wireless communication device, and transmission data is transferred from the first information processing device to the first wireless communication device via the data transfer path. Data is stored in the first wireless communication device. Next, after the transfer of the transmission data is completed, a wireless transmission path is formed between the first wireless communication device and the second wireless communication device, and from the first wireless communication device to the second wireless communication device via this wireless transmission path. The accumulated transmission data is wirelessly transmitted to the second wireless communication device, and the transmitted reception data is transmitted to the second wireless communication device.
stored in wireless communication devices. After the transmission of the transmission data is completed, a data transfer path is formed between the second wireless communication device and the second information processing device, and the data is transferred from the second wireless communication device to the second information processing device via this data transfer path. The accumulated received data is transferred to the information processing device.

Another aspect of the present invention provides a transmission transfer control means in a wireless communication device that wirelessly transmits transmission data from an information processing device to a communication partner, and also receives data wirelessly transmitted from the communication partner and transfers it to the information processing device. , a data transmission storage means, a wireless transmission control means, a wireless reception control means, a data reception storage means, and a data reception transfer control means. When a transmission request arrives from the information processing device, the transmission transfer control means forms a data transfer path with the information processing device to perform transmission transfer control of the transmission data, and by this transmission transfer control, The transmission data transferred from the information processing device is stored in the data transmission storage means, and after the transmission of the transmission data is completed,
The wireless transmission control means performs control to form a wireless transmission path with the communication partner, and the transmission data stored in the data transmission storage means is transmitted to the other party's wireless communication via the wireless transmission path. Send to device.

Furthermore, when a transmission request arrives from the communication partner,
Performing control to form a wireless transmission path with the communication partner by the wireless reception control means, and receiving data sent from the communication partner via this wireless transmission path;
The received data received by the wireless reception control means is stored in the data reception storage means, and after the data reception control by the wireless reception control means is completed, the data reception and transfer control means is used to transfer the data to the information processing device. A data transfer path is formed in the data reception storage means, and the received data stored in the data reception storage means is transferred to the information processing device via this data transfer path.

(Function) As a result, according to the present invention, the transmission data transfer operation from the transmitting side information processing device to the transmitting side wireless communication device, and the wireless transmission operation from the transmitting side wireless communication device to the receiving side wireless communication device. The operation of transmitting data via the line and the operation of transferring received data from the wireless communication device on the receiving side to the information processing device on the receiving side are performed independently. For this reason,
Each information processing device no longer needs to exclusively perform control operations during the wireless data transmission period, and can perform other processing operations outside of the period when data is being transferred to and from the wireless communication device. It becomes possible.

Therefore, it is possible to fully utilize the processing power of the information processing device, thereby significantly increasing processing efficiency. Further, the data transfer operation described above can be performed in a short time at the maximum transfer rate with the wireless communication device without being restricted by the wireless transmission rate. Therefore, the time required for the information processing device to wirelessly transmit data is further reduced, thereby further increasing processing efficiency.

Further, according to the present invention, all new functions are provided in the wireless communication device, and there is no need to provide new functions in the information processing device, so that the present invention can be implemented relatively easily. Furthermore, since the control related to the wireless transmission operation is performed by the wireless communication device, it is also possible to reduce the burden of data transmission control on the information processing device, compared to the conventional method in which all control was performed by the information processing device.

(Embodiment) FIG. 1 shows the configuration of a data wireless transmission system for implementing a data wireless transmission method according to an embodiment of the present invention. In this figure, the same parts as those in FIG. 5 are given the same reference numerals and detailed explanations will be omitted.

Each wireless modem device 30.40 in this system has a transmission storage circuit 51.61 and a reception storage circuit 52.6.
2, a combining circuit 53.63, and a separating circuit 54.64. The transmission storage circuit 51.61 stores one communication worth of transmission data DT transferred from the personal computer 10.20 at the time of data transmission. The reception storage circuits 52 and 62 also store one communication worth of received data sent from the wireless modem device of the communication partner when receiving data. On the other hand, the synthesis circuit 53.63 synthesizes the information data read from the transmission storage circuit 51.61 and the control data C8 sent from the personal computer 10, and supplies the synthesized data to the transmitter 33.43. Also, the separation circuit 54.
64 separates the received data output from the receiver 36.46 into control data C8 and information data DT;
The control data C8 is output to the personal computer 10.20 via the output interface 38, and the information data D
T is supplied to the storage circuit 52.62.

Furthermore, each wireless modem device 30.40 includes a control section 55.65 whose main control circuit is, for example, a microcomputer. These control units 55 and 65 have data transmission and transfer control means, data transmission and storage control means, radio transmission control means, radio reception control means, data reception and storage control means, and data reception and transfer control means. are doing.

The data transmission transfer control means is a personal computer 1
When a data transmission request is transmitted from the personal computer 10.20, a data transfer path is formed between the personal computer 10.20 and the personal computer 10.20. Transmission data DT transferred from the personal computer 10.20 via this data transfer path is input and supplied to the transmission storage circuit 51.61.

The data transmission storage control means is a personal computer 1
The transmission data DT transferred from 0.20 is sequentially written into the transmission memory circuit 51.61 and once stored, read out sequentially at the time of transmission and supplied to the synthesis circuit 53.

After the transmission data DT has been transferred by the data transfer control means, the wireless transmission control means executes wireless line connection control with a wireless modem device 40.30 on the communication partner side according to a predetermined procedure using a multi-channel access method. do. Once the wireless line is set up, transmission control of the information data read from the transmission storage circuit 51.degree. 61 is then executed.

The wireless reception control means is a wireless modem device 30 on the communication partner side.
．． When a wireless line connection request arrives from 40, wireless line connection control is executed between the communication partner wireless modem device 30 and 40 according to a predetermined procedure using a multi-channel access method. Then, once the wireless line is set up,
Thereafter, the data reception storage means controls the reception of data sent via this wireless line. The data reception storage means sequentially writes the reception information data DT into the reception storage circuit 52, 62, and once stores all data for one communication. Read out sequentially after reception is completed.

The data reception transfer control means forms a data transfer path with the personal computer 10.20 after receiving all the data for one communication. Then, the reception information data DT that has been read out from the reception storage circuit 52.62 is
The personal computer 10 via the data transfer path
．． Transfer output to 20.

Next, the data wireless transmission method of this embodiment will be explained based on the above configuration. Although the system of this embodiment is capable of two-way communication between the personal computers 10 and 20, an example will be described here in which data is wirelessly transmitted from the personal computer 10 to the personal computer 20.

When transmitting data to the personal computer 20, the personal computer 10 first outputs a transmission request to the wireless modem device 30. At this time, the control unit 55 of the wireless modem device 30 repeatedly monitors the arrival of a transmission request and the arrival of a wireless line connection request in steps 2a and 2b, respectively, as shown in FIG.

When a transmission request arrives from the personal computer 10, data transmission control is thereafter executed.

That is, as shown in FIG. 3, the control unit 55 of the wireless modem device 30 first determines whether or not there is space in the transmission storage circuit 51 in step 3a, and if there is space, in step 3b, the control unit 55 sends a transmission enable signal to the personal computer. It is sent back to computer 10.

Note that if a large amount of unsent transmission data is stored and there is little space, a transmission disable signal is sent back to the personal computer 10 in step 3c.

Now, when the above transmittable signal is returned, the wireless modem device 30
The control unit 55 first forms a data transfer path with the personal computer 10 in step 3d. Thereafter, the transmission information data DT transferred from the personal computer 10 is inputted via the input interface 31, and is sequentially stored in the transmission storage circuit 51 in step 3e.

Further, while inputting the transfer of the transmission information data DT, the control unit 55 monitors whether or not the transfer of the transmission information data DT is completed in step 3f, and upon receiving a transfer completion notification from the personal computer 10, The process moves to step 3g, where the data transfer path is opened and the connection between the personal computer 10 and the computer 10 is cut off. Thus, the process of transferring the transmission data DT from the personal computer 10 to the wireless modem device 30 is completed.

When the transfer of the transmission data DT is completed, the control unit 55 of the wireless modem device 30 next sends a wireless line connection request to the receiving side wireless modem device 40 in step 3h, and then executes the wireless line connection control procedure. Execute. In this connection control procedure, selection of an available wireless line and setting of this wireless line are performed using a multi-channel access method.

When the wireless line is set, the control unit 55 confirms the completion of the wireless line setting in step 3j, and then proceeds to step 3k, where it thereafter executes wireless transmission control of the transmission data. That is, a fixed amount of transmission information data DT is sequentially read out from the transmission storage circuit 51, and after these transmission information data DT are combined with control data C8 in a combining circuit 53, an error correction code is added and the data is introduced into the transmitter 33. do. Then, the signal is modulated by the transmitter 33 and sequentially transmitted wirelessly from the transmitting antenna 34 to the wireless modem device 40 on the receiving side. Furthermore, if a retransmission request arrives from the wireless modem device 40 on the receiving side after transmitting one transmission data, the same transmission data is transmitted again. While performing such transmission control, the control unit 5
5, it is determined in step 31 whether data transmission has been completed. When it is confirmed that all of the transmission data DT stored in the transmission storage circuit 51 has been transmitted, the process moves to step 3m, where control to open the wireless line is executed. The wireless line with the device 40 is disconnected. Thus, the wireless transmission process of the transmission data DT is completed.

On the other hand, the wireless modem device 40 on the receiving side has a control unit 65.
Similarly to the wireless modem device 30 on the transmitting side, the second
As shown in the figure, the arrival monitoring of transmission requests and the arrival of wireless line connection requests are repeatedly performed. When a wireless line connection request arrives from another wireless modem device 30 in this state, the process then shifts to reception control.

That is, as shown in FIG. 4, first, in step 4a, a predetermined connection control procedure is executed with the wireless modem device 30 on the connection requesting side, thereby establishing a wireless line with the wireless modem device 30. After confirming the wireless line settings in step 4b, the process moves to step 4C, where data wireless reception control is executed. That is, when data is sent from the wireless modem g130 on the transmitting side, the data is received and demodulated by the receiver 46 and then separated into control data C8 and information data DT by the separation circuit 64. Then, the information data DT out of these data are sequentially written into the reception storage circuit 62 (step 4d). At this time, the received data is subjected to error correction processing, and if the error cannot be corrected, a retransmission request is sent to the wireless modem r1130 on the transmitting side.

During this reception control, the control unit 65 of the wireless modem device 40
In step 4e, it is determined whether data reception is complete. In this state, the wireless modem device 3 on the transmitting side
When the transmission end notification arrives from 0, it is determined that the data reception is complete, and the process moves to step 4f, where the wireless line release control is executed to open the wireless line set between the wireless modem device 30 and the wireless line. cut. Thus, the data receiving process is completed.

Now, when the reception of this data is completed, the wireless modem device 4
The control unit 65 of No. 0 proceeds to a step of transferring the received information data DT to the personal computer 20. In other words, first, use the Ste-nobu 4g to connect the personal computer 2.
When the personal computer 20 responds to this, control for forming a data transfer path with the personal computer 20 is executed in step 4h. When the data transfer path is formed, the reception information data DT is sequentially read out from the reception storage circuit 62 in step 41, and the reception information data DT is transferred and outputted to the personal computer 20. and,
When the completion of transfer of the received information data DT is confirmed in step 4j, the process moves to step 4k, where the data transfer path is opened and the communication path with the personal computer 20 is cut off.

As described above, this embodiment provides the following effects.

That is, in this embodiment, the personal cocipiputer 10
DT to the wireless modem device 30, data wireless transmission from the wireless modem device 30 to the wireless modem device 40 on the receiving side of the communication partner, and data transmission from the wireless modem device on the receiving side to the personal computer 2o. The transfer operation of the received data DT is performed independently.

Therefore, the personal computers 10 and 20 only need to perform control operations when transmitting data to the wireless modem device 3o and when transmitting and inputting received data from the wireless modem device 4o, respectively. That is, the personal computer 10.20 has a wireless modem device 30.
There is no need to perform control related to the wireless transmission of data that takes place between If the wireless line is in poor condition, it will take a relatively long time to connect the wireless line.Also, if the condition of the wireless transmission path is degraded, procedures such as retransmission are often performed, so the data Therefore, eliminating the need for a series of controls related to wireless data transmission as described above will significantly shorten the time involved in data transmission operations of personal computers 10.20. Therefore, the operating efficiency of the personal computer 10.20 can be greatly improved.That is, the operating efficiency of the personal computer 1'0.
It becomes possible to make full use of the processing capabilities of 20.

Note that the present invention is not limited to the above embodiments. For example, in the above embodiment, the personal computer 10.2
Although the present invention has been described with reference to an example in which the present invention is applied to a system in which data is transmitted bidirectionally between 0 and 0, the present invention can be similarly applied to a system in which data is transmitted in one direction. In this case, the wireless modem device only needs to have a configuration for one-way transmission.

Furthermore, in the embodiment described above, after the transfer operation of the transmission data from the personal computer 10 to the wireless modem device 3o is completed, the wireless line connection control between the wireless modem devices 30 and 40 is started. The wireless line connection control may be started during the transfer operation, and once the wireless line is connected, the transmission data transmission operation may also be started.

This is achieved by accessing the transmission memory circuit 51 of the wireless modem device 30 using a direct memory access method, and by using a dual mode memory in the memory circuit 51 that can perform write and read operations in parallel. Can be implemented.

In addition, the procedures and contents of data transfer control and wireless connection control can be modified in various ways without departing from the gist of the present invention.

〔Effect of the invention〕

As detailed above, the data wireless transmission method of the present invention transmits data from a first information processing device to a second information processing device via the first and second wireless communication devices attached to these information processing devices. When transmitting data wirelessly, first, a data transfer path is formed between the first information processing device and the first wireless communication device, and from the first information processing device to the first The transmission data is transferred to the first wireless communication device and stored in the first wireless communication device. Next, after the transfer of the transmission data is completed, a wireless transmission path is formed between the first wireless communication device and the second wireless communication device, and from the first wireless communication device to the second wireless communication device via this wireless transmission path. wirelessly transmitting the accumulated transmission data to the second wireless communication device;
This transmitted received data is stored in the second wireless communication device.

After the transmission of the transmission data is completed, a data transfer path is formed between the second wireless communication device and the second information processing device, and the data is transferred from the second wireless communication device to the second information processing device via this data transfer path. The accumulated received data is transferred to the information processing device.

Further, in the wireless communication device of the present invention, when a transmission request arrives from the information processing device, the transmission transfer control means forms a data transfer path with the information processing device to control the transmission and transfer of the transmission data, This transmission transfer control causes the transmission data transferred from the information processing device to be stored in the data transmission storage means, and after the transmission of the transmission data is completed, the wireless transmission control means establishes a wireless transmission path between the transmission data and the communication partner. , and transmits the transmission data stored in the data transmission storage means to the other party's wireless communication device via this wireless transmission path. Furthermore, when a transmission request arrives from the communication partner, the wireless reception control means performs control to form a wireless transmission path with the communication partner, and transmits the data to the communication partner via this wireless transmission path. receiving the data sent from the radio reception control means, and storing the received data received by the radio reception control means in the data reception storage means, and after the data reception control by the radio reception control means is completed, the data reception transfer control means A data transfer path is formed between the information processing device and the information processing device, and the received data stored in the data reception storage means is transferred to the information processing device via the data transfer path.

Therefore, according to the present invention, it is possible to provide a data wireless transmission method and a wireless communication device that can eliminate the need for an information processing device to exclusively perform data wireless transmission operations, thereby increasing the processing efficiency of the information processing device. can.

[Brief explanation of the drawing]

FIG. 1 is a circuit block diagram showing the configuration of a data wireless transmission system for carrying out a data wireless transmission method according to an embodiment of the present invention, and FIGS. 2 to 4 show a control section of a wireless modem device in the system. FIG. 5 is a flowchart showing a control procedure and control contents, and a circuit block diagram showing the configuration of a data wireless transmission system implementing a conventional data wireless transmission method. 10.20...Personal computer, 30.40
...Wireless modem device, 31.41...Input interface, 33.43...
・Transmitter, 34.44... Transmission antenna, 35.45
...Receiving antenna, 36.46...Receiver, 38.
48... Output interface, 51.61... Memory circuit for transmission, 52.62... Memory circuit for reception, 53.63... Combination circuit, 54.64... Separation circuit, 55. 65...control unit.

Claims (1)

[Claims] 1) Data radio that wirelessly transmits data from a first information processing device to a second information processing device via first and second wireless communication devices attached to these information processing devices. In the transmission method, a data transfer path is formed between the first information processing device and the first wireless communication device, and the data is transmitted from the first information processing device to the first wireless communication device via the data transfer path. a step of transmitting the transmission data to the first wireless communication device and storing the transmission data in the first wireless communication device, and a step of wireless transmission between the first wireless communication device and the second wireless communication device after the transfer of the transmission data is completed. The accumulated transmission data is wirelessly transmitted from the first wireless communication device to the second wireless communication device via this wireless transmission path, and the transmitted received data is transmitted to the second wireless communication device. and after the transmission of the transmission data is completed,
A data transfer path is formed between the second wireless communication device and the second information processing device, and the accumulated reception is transferred from the second wireless communication device to the second information processing device via the data transfer path. 1. A data wireless transmission method comprising the step of transmitting data. (2) In a wireless communication device that wirelessly transmits transmission data from an information processing device to a communication partner, and receives data wirelessly transmitted from the communication partner and transfers it to the information processing device, a transmission request is received from the information processing device. a transmission transfer control means for forming a data transfer path with the information processing device and controlling the transmission and transfer of the transmission data when the information processing device arrives; After the transmission of the transmission data is completed, the transmission data stored in the data transmission storage means is controlled to form a wireless transmission path between the communication partner and the transmission data stored in the data transmission storage means. A wireless transmission control means for transmitting data to a wireless communication device of a communication partner via a wireless transmission path, and a wireless transmission path for forming a wireless transmission path between the communication partner and the communication partner when a transmission request arrives from the communication partner. and a data reception memory for storing the received data received by the wireless reception control means. After the data reception control by the wireless reception control means is completed, a data transfer path is formed between the information processing device and the data reception storage means, and the received data stored in the data reception storage device is transmitted through the data transfer path. A wireless communication device comprising: data reception and transfer control means for transferring data to the information processing device.