JPH09191302A - Radio communication system and radio communication method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To receive and store efficiently a hopping pattern for system control in the radio communication system where spread spectrum radio communication using a frequency hopping system(FH system) is conducted. SOLUTION: This system is made up of a master set 101 making setup in the case of communication of a terminal equipment in this system and plural radio terminal equipments 102, 103 and communicates a control signal to control the entire system by a prescribed hopping pattern. The master set 101 sends the control signal including data of a frequency to be hopped next and the radio terminal equipments 102, 103 receive the control signal at a frequency from the master set 101 and store data of the frequency to be hopped next included in the received control signal to a built-in register. Then the radio terminal equipments 102, 103 receive a control signal from the master set 101 at the frequency from the data of the frequency to be hopped next and store data of the frequency to be hopped next included in the received control signal to the built-in register. The operation above is repeated and after a frequency is stored in the register then the communication is started by sending/receiving the control signal by the hopping pattern.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a main device which performs call setting when terminals in a system communicate with each other, and a plurality of wireless terminal devices which perform spread spectrum wireless communication by frequency hopping with the main device. The present invention relates to a wireless communication system and a wireless communication method that are configured to communicate a control signal for controlling the entire system in a predetermined hopping pattern, and in particular, spread spectrum (Spread Spectrum: SS) of a frequency hopping method (hereinafter, referred to as “FH method”). The present invention relates to a wireless communication system and a wireless communication method suitable for simultaneously communicating multimedia data such as characters, voices, images, and videos to a plurality of terminals using communication.

[0002]

2. Description of the Related Art In recent years, wireless communication has rapidly progressed and has been used in various fields. Particularly, a system for wirelessly performing multimedia data communication has been proposed.

Further, in the above-mentioned wireless switching system, more and more ones use the digital wireless system as a wireless system. Among the digital wireless communication systems, the spread spectrum communication has received particular attention. Spread spectrum communication is known to have high interference removal capability and excellent confidentiality by spreading the information to be transmitted over a wide band. Frequencies in the 2.4 GHz band have been allocated for spread spectrum communication in various countries around the world, and are spreading around the world.

Spread spectrum communication systems are roughly classified into frequency hopping (FH system) and direct spread (DS system). The former performs transmission using a wide band by changing the modulation frequency within a fixed time, and the latter spread-modulates the information to be transmitted with a pseudo-noise code that is 10 to several hundred times faster. It uses a wider band.

In the FH spread spectrum communication system, the shape of the change in the modulation frequency (hopping pattern:
HP) allows a plurality of communications to be performed simultaneously.
That is, each communication terminal communicates with a different hopping pattern (hereinafter referred to as "HP"), whereby multiplexed communication can be realized at the same time.

[0006] In the conventional FH wireless communication system, when one terminal communicates with a plurality of terminals by time division multiplexing or when communicating data of a plurality of media, HP is assigned to each terminal, With this, multiple communication has been realized.

[0007]

However, the above-mentioned conventional example has the following problems.

(1) When the wireless communication terminal started up, it was not possible to know what HP this system was operating at. In addition, if all HP data is sent first, the amount of data increases, and there is a high possibility of error.

(2) When the wireless communication terminal is communicating with a certain medium, it cannot simultaneously communicate with another medium. Or, when one communication terminal was communicating, it was not possible to communicate with another terminal.

(3) When a certain communication terminal starts communication, the main unit allocates the HP for the communication, but when notifying it, all the HP had to be notified.
It took time to notify P, and there was a possibility that the data would be incorrect.

(4) When changing the HP, it was necessary to create as many HPs as the number of currently performed communications and notify the number.

[0012]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has, for example, the following arrangement as one means for solving the above-mentioned problems.

That is, the system as a whole is composed of a main unit which performs call setting when terminals in the system communicate with each other, and a plurality of wireless terminal units which perform spread spectrum wireless communication by frequency hopping with the main unit. Is a wireless communication system that communicates a control signal for controlling a control signal with a predetermined hopping pattern, wherein the main device includes a transmitting unit that transmits the control signal including data of a frequency to be hopped next, and the wireless communication terminal Stores a control signal from the main device at a certain frequency, stores the data of the next hop frequency included in the received control signal in the internal register, and then receives the next hop frequency. Repeating means for repeatedly executing the storing means as a frequency and storing the data of the next moving frequency in a register; Characterized in that it comprises a communication start means for starting the transmit and receive control signals by the hopping pattern communication after storing the frequency of the predetermined period to register.

Further, for example, the main device further includes a call setting means for setting a call when communicating between the wireless communication terminals accommodated in the extension, and a radio for setting a call by the call setting means. A hopping pattern setting means for allocating a hopping pattern to be used for data transfer between the communication terminals, wherein the wireless communication terminal in which the call setting by the call setting means is performed is provided with a communication means for performing data communication according to the set call, By assigning a plurality of hopping patterns to the wireless communication terminal, a plurality of communication channels can be used at the same time, and a plurality of terminals can be simultaneously communicated.

Further, for example, the hopping pattern setting means of the main device may generate a new hopping pattern by shifting the frequency from the hopping pattern used for control signal communication when allocating the hopping pattern used for data transfer. And a notification means for notifying the wireless communication terminal of the hopping pattern for data communication and for notifying the shifted number, the communication means of the wireless communication terminal is stored by the storage means. And a hopping pattern determining means for using, as a hopping pattern for data communication, data shifted by the number notified by the notifying means from the hopping pattern of the register.

Further, for example, when it is necessary to change the hopping pattern, the transmitting means of the main device changes the data of the next hop frequency to the control signal and transmits the control signal, and the data is stored in the wireless communication terminal. The means further receives frequency control means for receiving a control signal from the main device and storing the data of the next frequency contained in the control signal in a register, and some other data communication when the control signal is received. If it is, the changing means is also provided for changing the hopping pattern used in the data communication at the same time.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. <First Example of Embodiment of the Invention> In this example, a detailed description will be given of a case where digital radio communication by a frequency hopping method is used for extension transmission of a switching system. (System Configuration) A configuration diagram of a system assumed in this example is shown in FIG. As shown in FIG. 1, the present system includes a main unit 101 having a wireless connection function between wireless terminals, and a plurality of wireless dedicated telephones 102 for communicating control data and voice data.
-A, 102-B, data terminal devices 103-A-10 for performing control data communication and direct data communication between terminals.
It is composed of 3-F.

The data terminal device in this example is defined as "a combination of a terminal (data terminal) having a function of transmitting an arbitrary amount of data in a burst and a wireless adapter for controlling wireless communication between the data terminals. It will be. The data terminal is not limited to the computer 103-A, but the printer 103-B, the copying machine 103-C, the video conference terminal 103-D, the facsimile 103-E, the LAN.
The bridge 103-F, other various terminals that perform data processing such as an electronic camera, a video camera, and a scanner correspond to the bridge 103-F. (Configuration of Main Unit) FIG. 2 is a diagram showing the configuration of the main unit 101 of the present system. In FIG. 2, 201 is the center of the main unit 101, and the entire main unit 101 including speech channel control and radio section control. Is a CPU that controls the control of. 202
Is a ROM in which the control program of the CPU 201 is stored,
Reference numeral 203 is an EEPROM that stores a calling code (system ID) of the present system, and 204 is a RAM that stores various data for controlling the CPU 201 and provides a work area for various calculations.

Further, 205 is under the control of the CPU 201,
This is a channel codec that performs scrambling and the like on a control signal and time-division-multiplexes into a predetermined frame. Under the control of the CPU 201, 206 modulates the framed digital signal from the channel codec 205, processes it so that it can be transmitted wirelessly, transmits it to the antenna, and demodulates the signal received wirelessly from the antenna to frame it. The wireless unit processes the digitalized signal. (Structure of wireless-only telephone) FIG. 3 is a diagram showing the structure of the wireless-only telephone 102 of the present system. Reference numeral 301 is the center of the wireless-only telephone 102 and shows the entire wireless-only telephone 102 including control of the wireless unit and call control. It is a CPU that controls the control. 302 is a ROM in which the control program of the CPU 301 is stored, 303 is an EEP that stores the calling code (system ID) of this system, and the sub ID of the wireless telephone.
ROMs 304 are RAMs that store various data for controlling the CPU 301 and provide a work area for various calculations. 305 is under the control of the CPU 301,
A handset 310, a microphone 311, and a speaker 31 described later.
2 is a call circuit for inputting and outputting a call signal from 2.

Under the control of the CPU 301, 306 converts an analog voice signal from the call circuit 305 into an ADPCM code and transmits it to a channel codec 307, which will be described later, and at the same time, converts the ADPCM coded call signal from the channel codec 307 into an analog voice signal. It is an ADPCM codec for converting into a signal and transmitting it to a speech circuit. 307
Under the control of the CPU 301, is a channel codec that performs processing such as scrambling on the ADPCM-coded speech signal and control signal, and time-division-multiplexes into a predetermined frame.

Under the control of the CPU 301, a signal 308 modulates a framed digital signal from the channel codec 307, processes it so that it can be transmitted wirelessly, transmits it to an antenna to be described later, and also receives the signal wirelessly from the antenna. Is a wireless unit that demodulates and processes into a framed digital signal. Reference numeral 310 is a handset for inputting / outputting a voice signal for communication, 311 is a microphone for collecting and inputting the voice signal, and 312 is a speaker for outputting the voice signal.

Reference numeral 313 is a display unit for displaying a dial number input from a key matrix, which will be described later, and the usage status of external lines. A key matrix 314 includes dial keys for inputting dial numbers and the like, and function keys such as an outside line key, a hold key, and a speaker key. Reference numeral 315 is an HP storage register that stores the moving frequency. (Configuration of Wireless Adapter) FIG. 4 is a diagram showing a configuration of a data communication terminal that can be accommodated in the system and an internal block configuration of a wireless adapter connected to the data terminal.

In FIG. 4, 401 is a data terminal, 40
Reference numeral 2 is a wireless adapter, and 403 is a wireless unit. The data terminal 401 is connected to the wireless adapter 402 via a communication cable or an internal bus. As the data terminal, for example, a personal computer, a workstation, a printer / facsimile, or other data terminal equipment can be connected, and there is no particular limitation on the mode.

Reference numeral 404 denotes a main control unit, which is composed of a CPU, peripheral devices for performing interrupt control, DMA control, etc., an oscillator for a system clock, etc., and controls each block in the wireless adapter. Reference numeral 405 denotes a memory, which is a ROM for storing a program used by the main control unit 404 and an RA used as a buffer area for various processes.
It is composed of M etc.

Reference numeral 406 denotes a communication I / F unit, which is a communication I / F provided as standard equipment of the above-mentioned data terminal 401, for example, RS.
232C, Centronics, communication I / F such as LAN,
An internal bus of a personal computer or a workstation, for example, an ISA bus, a PCMI I / F, or the like is applicable. A terminal control unit 407 manages various communication controls necessary for data communication between the data terminal 401 and the wireless adapter 402 via the communication I / F 406.

A channel codec 408 performs frame processing and radio control. The data assembled into a frame by the channel codec is transmitted to the main device or the opposite terminal via the wireless unit. An error correction processing unit 409 is used to reduce bit errors occurring in data by wireless communication. Error correction processing unit 409
Inserts an error correction code into communication data at the time of transmission. Further, at the time of reception, an error position and an error pattern are calculated by arithmetic processing, and the bit error in the received data is corrected.

Reference numeral 410 is a timer, which provides a timing signal used by each block inside the wireless adapter. Four
Reference numeral 11 is an HP storage register that stores the moving frequency. (Wireless frame) FIGS. 5 to 10 show a wireless frame configuration used in this system. Hereinafter, FIG.
The details of the internal data of the frame will be described with reference to FIG.

FIG. 5 shows the overall frame structure used in this system. In FIG. 5, CNT is a system control channel, LCCH is a logical control channel, and END is a frequency switching time for the next frame. Two audio channels, one for each bidirectional channel
Perform communication. The data channel is used for data transmission. Further, in FIG. 5, F1 and F3 denote frequency channels used when wirelessly transmitting this frame, and indicate that the frequency channel is changed for each frame.

FIG. 6 shows the frame structure of the system control channel used in this system. In FIG.
CS is a carrier sense time of 12.8 usec, R is a ramp bit of 6.4 usec, PR is a 56-bit preamble for capturing a bit sync, SYN is a 31-bit frame sync signal defined by 1 dummy bit + RCR, ID is 63-bit read signal + 1 dummy bit defined by RCR, BF is 8-bit basic frame number information (1 to 20 cycles), MF is 8-bit multi-frame number information (1 to 16 cycles), WA Is a field in which a system address of a terminal to be activated among sleep mode terminals is written, Rve is an area number for distinguishing from a neighboring cell, and GT is a guard time.
This system control channel is transmitted from the main device for synchronizing the entire system and for controlling.

FIG. 7 shows the frame structure of the logical control channel used in this system. In FIG. 7, CS
0, CS1 and CS2 are carrier sense time slots, which can be prioritized according to the purpose of use. P
R is a 56-bit preamble for capturing bit synchronization, UW is a 24-bit unique word (for capturing byte synchronization), DA is a field for entering a system address, and in this example, it is the same as its own address. Is assigned and receives the same address as its own.

DATA represents a data slot accommodating logic control data, CRC represents CRC information for data from the data portion of BF to LCCH, and CF represents a guard lime for frequency switching. The logical control channel having the above configuration is transmitted at the same frequency as the frame synchronization signal channel, and is used when each terminal sets up a call.

FIG. 8 shows the frame structure of the data channel used in this system. In FIG. 8, CF is a guard time for frequency switching, CS0, CS1, C
S2 is a carrier sense time slot, which can be prioritized according to the purpose of use. PR is a 56-bit preamble for capturing bit synchronization, UW is a 24-bit unique word (for capturing byte synchronization), DA is a field for entering a system address, and is the same as its own address as described above. To receive.

In this example, the call setup is completed and the main unit 1
When HP (for example, shift code 6) is allocated from 01, the frequency is changed to HP allocated only during this frame (F7 to F1) and data is transmitted.

FIG. 9 shows the frame structure of a voice channel used in this system. In FIG. 9, CS is 1
Carrier sense time of 2.8 usec, PR is 56-bit preamble for bit synchronization acquisition, UW is 2
4-bit unique word (for capturing byte sync), T
/ R is B channel information of 32 kbps, CRC information for data, and GT is a guard time.

In the case of performing voice data communication, in this example, another HP (for example, shift code 12) is received from the main unit 101, and the frequency is changed to the HP allocated only during this frame (for F1). (F13) The voice data is transmitted.

FIG. 10 shows EN used in this system.
The frame structure of D is shown. In FIG. 10, CF represents a guard time for frequency switching. (Regarding Frequency Hopping Pattern) FIG. 11 shows a conceptual diagram of frequency hopping used in this system.

In the system of this example, 26 frequency channels of 1 MHz width using the 26 MHz band approved for use in Japan are used. Considering the case where there is a frequency that cannot be used in the disturbing nozzle or the like, 10 frequency channels are selected from 26 channels, and frequency hopping is performed on the selected frequency channels in a predetermined order.

In this system, one frame is 10 ms
The frequency channel is hopped for each frame. Therefore, one of the hopping patterns
The length of the cycle is 100 ms.

In FIG. 11, different hopping patterns are shown as different patterns. In this way, a pattern that the same frequency is not used at the same time,
By using it in each frame, it is possible to prevent the occurrence of data error and the like.

Further, when accommodating a plurality of connecting devices, it is also a feature of the present system that different connecting devices use different hopping patterns in order to prevent interference between the connecting devices. With this method, a system having a multi-cell configuration can be realized and a wide service area can be obtained.

FIG. 12 shows a conceptual diagram of frequency hopping after the change used in this system.

In the system of this example, when the frequency of F9 becomes unusable due to a nozzle or the like, data is transmitted using the frequency of F22 in a time slot using the frequency of F9. (Detailed Description of Operation) In the present system having the above-described configuration, frames are assembled between the main device 101, the wireless telephone 102 and the data terminal 103, and communication between the terminals is performed. Is controlled at regular intervals. Hereinafter, the details of the specific operation of this system will be described in some cases. 1) Startup Operation Procedure In this system, it is possible to determine the hopping pattern to be used by using the candy that uses a voice or data channel and the logical control channel (LCCH) that is time division multiplexed within a frame. It is a feature.

FIG. 13 shows a start-up sequence diagram of the wireless communication terminal in this example, and FIG. 14 shows a flowchart of initialization processing of the wireless communication terminal.

In this system, the control data CNT (1001) is always transmitted from the main unit 101 at a certain HP.

First, when the power of the wireless communication terminal is turned on, FIG.
To step S1101 shown in FIG.
At 102, reception waiting is performed at an arbitrary frequency, and at step S1103, the reception of CNT (1001) is monitored at the waiting frequency as shown in FIG. here,
When the first CNT (1001) is received, step S1
The process proceeds from step 103 to step S1104, and the first CNT
The frequency information of the next frame contained in (1001) is fetched.

Subsequently, in step S1105, the frequency of the next frame is stored in the register (315). Hereinafter, in step S1106, frequency hopping is started,
Wait for reception at the next frequency. Then, in step S1107
It is determined whether or not all the frequencies moved by are stored in the register (315). When all the moving frequencies are not stored in the register (315), the step S1 is performed again.
Returning to 103, watch for CNT reception at the next frequency.

On the other hand, when all the frequencies to be moved are stored in the register (315) in step S1107, step S
Proceeding to 1108, initialization is completed and communication is started. FIG. 15 shows an example of storage of the frequency in the frequency hopping register (315) during the initialization process.

In this way, the wireless communication terminal can efficiently receive and store the HP for system control. 2). Processing at the time of transmission between wireless communication terminals FIG. 15 shows a control data transfer sequence of the main device 101, the calling communication terminal, and the called communication terminal on this system. Each time slot (T1, T2 ...) Is divided, and the control signal, voice data, and image data are further time-divided within the slot, and the frequency is changed for communication.

The control data transfer sequence of the main device 101, calling communication terminal, and called communication terminal shown in FIG. 15 in this system will be described in detail below with reference to the flowcharts of FIGS. 17 to 20. explain. 17 is an operation flowchart of wireless communication terminal processing, FIG. 18 is an operation flowchart of control data receiving processing from the main device, FIG. 19 is an operation flowchart of wireless communication terminal transmission processing, and FIG. 20 is an operation flowchart of wireless communication terminal data transmission. is there. In addition,
In the following explanation, voice data communication is the first communication,
A case where image data communication is performed as the second communication will be described as an example.

In the wireless terminal 103-D, first in step S1501, the control signal CNT (10
01) is received and CNT reception processing is performed. Next, in step S1502, it is checked whether or not there is a data transmission request resulting from the CNT incoming process. If there is no data transmission request, the process returns to step S1501 again and the next CNT
Incoming call processing.

On the other hand, if there is a data transmission request in step S1502, the flow advances to step S1503, and the wireless terminal 103-D executes a calling process. Step S150
In step 4, it is checked whether or not the calling process is completed. If there is a calling process to be performed, the process returns to step S1501 to execute the next CNT receiving process. When the calling process ends, the process advances from step S1504 to step S1505.

In step S1505, CNT incoming call processing is performed, and then in step S1506, communication processing is entered.
Then, it is checked in step S1507 if the communication process to be performed is completed. If there is communication processing to be performed, the process returns to step S1505 to perform CNT incoming processing.

That is, for example, when the second communication request is generated in the communication processing, the transmission processing is performed, and when both communication are completed, the processing is completed from step SS1507 and the normal state is returned to.

FIG. 18 shows the details of the CNT incoming call processing shown in steps S1501 and S1505 described above. In CNT incoming call processing, normal CNT (100
When 1) is received from the main device 101, CNT analysis is first executed as shown in step S1601 of FIG. Then, in step S1602, the next frequency is checked and compared with the HP storage register shown in FIG. 15 to check whether the frequency has changed. If the frequency has not changed, the process ends and the process returns.

On the other hand, if the next frequency has changed, the process proceeds from step S1602 to step S1603, and the HP storage register is rewritten according to this frequency designation. The state of the HP register after the change from the HP storage register of FIG. 15 is shown in FIG. The HP storage register shown in FIG. 21 has a control signal of “F” as compared with the HP storage register of FIG.
9 ”has been rewritten as“ F22 ”.

By doing so, step S
In the CNT incoming call processing of 1501, when changing the HP, it is possible to simultaneously change the HP of all the communications being performed at that time. Also, the CNT in step S1505
When the main device 101 changes the HP by the incoming call processing,
It is possible to simultaneously change the HPs of all the communications being performed at that time.

Next, step S15 shown in FIG. 17 described above.
Details of the calling process shown in 03 will be described below with reference to FIG.

In the calling process, first, step S17.
The HP acquisition request indicated by 01 (1201 shown in FIG. 16) is sent to the main device 101. Upon receiving this, the main device 101
As shown in step S1702, the shift code (1202 shown in FIG. 16) from the control data included therein is returned to the terminal. On the terminal side, an HP for data communication is created from this shift code and stored in the HP storage register.

Next, the calling terminal makes a call to the partner terminal as shown in step S1703 (120 shown in FIG. 16).
3). Here, the calling terminal transmits the shift code received from the main apparatus 101 to the partner terminal. The partner terminal stores the HP for data communication in the HP storage register, as in step S1702. Then, as shown in step S1704, it responds to this (1204 shown in FIG. 16) and returns. After that, the communication process shown in step S1506 (see FIG.
The processing after 1205 shown in 6) is started.

By performing the above-described processing, in the wireless communication system of the present example, when the wireless communication terminal assigns the HP for data communication from the main apparatus 101, the other communication partner terminal can efficiently perform the HP. Can be notified.

Details of the communication process shown in step S1506 of FIG. 17 will be described below with reference to FIG.

In the communication process, first, step S18.
At 01, it is checked whether or not there is a request for transmission of image data communication. If there is no call origination request, the flow advances to step S1805 to transmit voice data (1205 shown in FIG. 16).
Then return.

On the other hand, in step S1801, if there is a call origination request, the process proceeds to step S1802, and the above-mentioned call origination processing is performed. In this case, the HP acquisition request (1206 shown in FIG. 16) and the shift code data (FIG. 16)
1207), a call (1208 shown in FIG. 16), and a response (1209 shown in FIG. 16) are included in each time slot (T
17, T18, T19, T20), and during this time, the voice data (1205 shown in FIG. 16) is transmitted in time division. The main device 101 sends a shift code of an HP different from the HP used in voice data communication to the communication terminal. Then, in a succeeding step S1504, it is checked whether or not the calling process is completed. If the calling process has not been completed, the process advances to step S1805.

On the other hand, when the calling process ends, step S1
The process proceeds from step 803 to step S1805, and voice data communication (see FIG. 1) is performed in one time slot (T21 shown in FIG. 16).
6) and image data communication (1210 shown in FIG. 16) are simultaneously performed. As a result, since a plurality of communication channels can be used simultaneously and a means for simultaneously communicating with a plurality of media or a plurality of terminals is provided, one terminal can perform communication using a plurality of media at the same time, and also can communicate with a plurality of terminals. it can.

As described above, according to the present example, the spread spectrum (SS) wireless communication using the frequency hopping method (FH method) is set up when the terminals in the system perform communication. In a wireless communication system composed of a main device 101 and a communication terminal that performs SS wireless communication with the main device 101, a control signal for controlling the entire system can be communicated with a hopping pattern (HP), and the main device 101 transmits the control signal. To the wireless communication terminal side until the control signal from the main unit 101 arrives at a certain frequency, and when the control signal is received, the control signal is analyzed and then The data of the frequency of is stored in the HP storage register and the process of moving to the next frequency is performed, and the data of the frequency to be moved next is stored in the HP storage register. After storing the frequency of the predetermined period to HP storage register by repeating the operation that, the H
By transmitting and receiving control signals at P and starting communication, HP for system control can be efficiently received and stored.

In the present system, the main device 101
Sends the HP to be used for data transfer between the wireless communication terminals to the wireless communication terminals having the call setting when the call setting is performed when the communication is performed between the wireless communication terminals accommodated in the extension. By allocating a plurality of HPs when this wireless communication terminal directly performs data communication, it becomes possible to use a plurality of communication channels at the same time, and thereby,
While simultaneously communicating with a plurality of media or a plurality of terminals, one terminal can simultaneously perform communication using a plurality of media, and also can communicate with a plurality of terminals.

Further, in this system, the main device 101
When assigning the HP used for data transfer, the H used is a form in which the frequency is shifted from the HP used for control signal communication.
When P is assigned and the main device notifies the wireless communication terminal of the HP for data communication, the wireless communication terminal can store the notified HP in a register by notifying the shifted number. When the HP is notified, the shifted number is notified and the HP that is in the register
The one shifted by the number notified by H for data communication
It can be used as P. As a result, when the wireless communication terminal assigns an HP for data communication from the main device, the HP can be efficiently notified.

Furthermore, in this system, the main unit 1
When 01 has to change the HP for some reason, it changes the data of the frequency to hop next to the control signal and transmits it, and when the wireless communication terminal receives this control signal, it sends the control signal. By analyzing and storing the data of the next frequency in the register, even if the wireless communication terminal is performing some data communication when receiving the control signal, the HP used in the terminal is also simultaneously It can be changed, and when the main device 101 changes the HP, it becomes possible to change the HPs of all the communications being performed at the same time. <Another Example of Embodiment of the Invention> In the above-described example, two voice channels and data channels are provided as frames,
The two-communication simultaneous operation has been described, but the present invention is not limited to the above example, and three or more simultaneous communication can be performed by providing three or more of these channels.

Further, by having a plurality of channels of the same media, it is possible to simultaneously communicate the same media data with a plurality of terminals.

The present invention also provides a "host computer,
The invention may be applied to a system including a plurality of devices such as an interface and a printer, or to an apparatus including one device such as a copying machine. Further, it goes without saying that the present invention can be applied to the case where it is implemented by supplying a program to a system or an apparatus. In this case, the storage medium storing the program according to the present invention constitutes the present invention. Then, by reading the program from the storage medium to the system or device, the system or device operates in a predetermined manner.

[0071]

As described above, according to the present invention, in a radio communication system for performing spread spectrum (SS) radio communication using a frequency hopping method (FH method), hopping for efficient system control is performed. It can receive and store patterns.

Further, in the wireless communication system, one terminal can simultaneously communicate using a plurality of media, and also can communicate with a plurality of terminals. Furthermore,
Even when the wireless communication terminal is assigned a frequency hopping pattern for data communication from the main device, the hopping pattern can be efficiently notified, and the hopping pattern for system control can be efficiently received and stored.

Further, according to the present invention, even when the main device changes the hopping pattern, it is possible to simultaneously change the hopping patterns of all the communications being carried out, and the hopping for system control can be efficiently performed. It can receive and store patterns.

[0074]

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a system of an example of an embodiment according to the present invention.

FIG. 2 is a diagram showing a detailed configuration of a main device in the system of this example.

FIG. 3 is a diagram showing a detailed configuration of a wireless-only telephone in the system of this example.

FIG. 4 is a diagram showing a detailed configuration of a wireless adapter in the system of this example.

FIG. 5 is a diagram showing an overall frame configuration used in the present system.

FIG. 6 is a diagram showing a frame structure of a system control channel used in the present system.

FIG. 7 is a diagram showing a frame structure of a logical control channel used in this system.

FIG. 8 is a diagram showing a frame structure of a data channel used in the present system.

FIG. 9 is a diagram showing a frame structure of a voice channel used in the present system.

FIG. 10 is a diagram showing an END frame structure used in the present system.

FIG. 11 is an explanatory diagram of a frequency hopping method used in this system.

FIG. 12 is an explanatory diagram of a changed frequency hopping method used in this system.

FIG. 13 is a diagram showing a startup sequence in this system.

FIG. 14 is an operation flowchart of a wireless communication terminal initialization process in the present system.

FIG. 15 is a diagram showing an example of HP storage register data in the present system.

FIG. 16 is a diagram showing a call setup sequence in the present system.

FIG. 17 is an operation flowchart of wireless communication terminal communication processing in the present system.

FIG. 18 is an operation flowchart of control data reception processing from the main device in the present system.

FIG. 19 is an operation flowchart of a wireless communication terminal transmission process in the present system.

FIG. 20 is an operation flowchart of wireless communication terminal data transmission in this system.

FIG. 21 is a diagram showing an example of HP storage register data after a change in the present system.

[Explanation of symbols]

 101 Main Device 102-A, B Wireless Mobile Phone 103-A Data Terminal 103-B Printer 103-C Copier 103-D Video Terminal 103-E Wireless Fixed Phone 103-F LAN Gateway 201, 301 CPU 202, 302 ROM 203 , 303 EEPROM 204, 304 RAM 205, 307, 408 Channel codec 206308, 403 Wireless section 305 Communication circuit 306 ADPCM codec 310 Handset 311 Microphone 312 Speaker 313 Display section 314 Key matrix 315, 411 HP storage register 401 Data terminal 402 Wireless adapter 404 Main control unit 405 Memory 406 Communication I / F unit 409 Error correction processing unit 410 Timer

Claims (8)

[Claims] 1. An entire system comprising a main device for setting up a call when a terminal in the system communicates and a plurality of wireless terminal devices for performing spread spectrum wireless communication by frequency hopping with the main device. Is a wireless communication system that communicates a control signal for controlling a control signal with a predetermined hopping pattern, wherein the main device includes a transmission unit that transmits the control signal including data of a frequency to be hopped next, the wireless communication terminal Is a storage unit that receives a control signal from the main device at a certain frequency and stores the data of the next hop frequency included in the received control signal in the internal register, and then receives the next hop frequency. Repeating means for repeatedly executing the storing means as a frequency and storing the data of the next moving frequency in a register; A wireless communication system, comprising: a communication starting unit that transmits and receives a control signal according to the hopping pattern to start communication after storing a frequency of a constant cycle in a register. 2. The wireless communication system according to claim 1, wherein the main unit further comprises call setting means for setting a call when performing communication between the wireless communication terminals accommodated in an extension, and the call. A hopping pattern setting means for allocating a hopping pattern to be used for data transfer between the wireless communication terminals when the call setting is performed by the setting means, and the wireless communication terminal for which the call setting is performed by the call setting means is set Radio communication characterized by comprising communication means for performing data communication according to a call, enabling simultaneous use of a plurality of communication channels by assigning a plurality of hopping patterns to the wireless communication terminal, and enabling simultaneous communication with a plurality of terminals system. 3. The radio communication system according to claim 2, wherein the hopping pattern setting means of the main device shifts a frequency from a hopping pattern used for control signal communication when allocating a hopping pattern used for data transfer. Allocating means for allocating a hopping pattern having a curved shape as a new hopping pattern, and notifying means for notifying the wireless communication terminal of the hopping pattern for data communication and notifying the shifted number, the wireless communication terminal The communication means includes a hopping pattern determination means for using, as a hopping pattern for data communication, data shifted by the number notified by the notification means from the hopping pattern of the register stored by the storage means. Communications system. 4. The radio communication system according to claim 3, wherein the transmission means of the main device changes data of a frequency to be hopped next to the control signal when it is necessary to change a hopping pattern. The storage means of the wireless communication terminal further receives a control signal from the main device and stores the data of the next frequency contained in the control signal in a register, and the storage means of the control signal. A wireless communication system, comprising: a changing unit that simultaneously changes the hopping pattern used in the data communication when some other data communication is performed at the time of reception. 5. The entire system is composed of a main device that performs call setting when terminals in the system communicate with each other, and a plurality of wireless terminal devices that perform spread spectrum wireless communication by frequency hopping with the main device. Is a wireless communication method in a wireless communication system that communicates a control signal for controlling a control signal with a predetermined hopping pattern, wherein the main device transmits data including a frequency of a next hop to the control signal, the wireless communication terminal Receives the control signal from the main device at a certain frequency, stores the data of the next hop frequency included in the received control signal in the internal register, and then sets the next hop frequency as the next received frequency. The control signal from the main unit at the frequency is received again, and the data of the next hop frequency included in the received control signal is stored in the internal register. Radio communication method characterized by initiating a repeat operation of storing the data to send and receive control signals by the hopping pattern after storing the frequency of the predetermined period register communication. 6. The wireless communication method according to claim 5, wherein the main device is used for data transfer between wireless communication terminals when performing communication between the wireless communication terminals accommodated in an extension. The wireless communication terminal that assigns the hopping pattern to perform the call setting and performs the call setting performs the data communication according to the set call, and assigns the plurality of hopping patterns to the wireless communication terminal to thereby obtain a plurality of communication channels. Wireless communication method, which enables simultaneous use with a plurality of terminals. 7. The wireless communication method according to claim 6, wherein the setting of the hopping pattern by the main device shifts a frequency from a hopping pattern used for control signal communication when allocating the hopping pattern used for data transfer. Form a hopping pattern as a new hopping pattern, and notify the wireless communication terminal of the hopping pattern for data communication and the shifted number, and the wireless communication terminal stores in the register. The data communication is performed by using data shifted by the number notified from the main device from the generated hopping pattern as a hopping pattern for data communication. 8. The wireless communication method according to claim 7, wherein when the main device needs to change a hopping pattern, the main device changes the data of the next hop frequency and transmits the control signal. The wireless communication terminal further receives a control signal from the main device, stores data of a next frequency included in the control signal in a register, and transmits some other data when receiving the control signal. The wireless communication method is characterized in that the hopping pattern used in the data communication is also changed at the same time when performing the above.