JP2008294505A - Radio system, master device, slave device, and control method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To automatically and accurately allocate individual numbers to respective slaves according to their connection distances, in a technology of a radio system wherein a plurality of slaves are connected to a master in series. <P>SOLUTION: A recognition and allocation means 10 transmits control channels to the connected slaves S, and also recognizes at least the nearest slave (for example, S1) based upon a time of a response to the transmission to allocate a predetermined individual number. For the second and succeeding slaves, a recognition and allocation means 70 of the master M or the slave S1 to which the individual number is allocated similarly transmit control channels to other slaves S which are connected downstream and recognize the nearest slave (for example, S2) based upon a time of a response to the transmission to allocate a predetermined individual number. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a wireless system in which a plurality of slaves are connected in series to a master.

  Conventionally, a wireless system such as a digital cordless telephone is used for a call between a director of a broadcasting station and an assistant. In this wireless system, an exchange is used as a master, and a plurality of slaves are appropriately installed as cell stations in other locations. One line is connected between the master and each slave by time division multiplexing (for example, see Patent Document 1). In series connection. Such a connection structure is also called daisy chain or cascade connection.

  In the time division multiplexing method, the time width is divided into minute time widths (slots) called communication slots. In this case, the number of communication slots is the same as the number of slaves. A long distance is covered by sending the signal to the slave or the master after being amplified and relayed. In other words, for communication with a desired slave, the master only needs to send and receive data in the communication slot corresponding to the individual number of the slave, and each slave also receives the signal from the master to the individual number set for itself. A response may be returned to the master at the timing of the matching slot.

  Regarding the assignment of communication slots to be used in this way, it is necessary to set individual numbers corresponding to the communication slots with the rotary switch provided for each individual slave and connect each slave in the order of the individual numbers set as such. If this is mistaken, the order of regenerative relay will be out of order, and correct transmission cannot be realized.

JP 2000-78643 A

  However, if humans manually set individual numbers and manage their connection order, human errors tend to occur, and each time a temporary setting is used, numbers are set and the numbers are assigned in that order. The burden of connecting was heavy. In particular, since the installation range of this type of wireless system extends to, for example, about 800 meters, the burden of resetting work in the event of a mistake is significant, such as going to individual slaves.

  The present invention solves the above-described problems of the prior art, and its purpose is to assign an individual number to each slave according to the connected distance in a wireless system technology in which a plurality of slaves are connected in series to a master. Automatic and accurate assignment.

  Based on the above object, the invention according to claim 1 is characterized in that one or more slave devices communicating with a slave unit are connected in series to a master device, and each communication slot in time division multiplexing is assigned to each slave device for regenerative relaying. In the wireless system, the master device transmits a control channel to the connected slave device, and recognizes at least the nearest slave device and assigns a predetermined individual number based on the response time to the transmission. It has an allocation means, It is characterized by the above-mentioned.

  The invention of claim 7 captures the invention of claim 1 from the viewpoint of a method, and connects one or more slave devices communicating with a slave unit in series to a master device, and sets each communication slot in time division multiplexing. In the wireless system control method for performing regenerative relay by assigning to each slave device, the master device realizes recognition assigning means by an electronic circuit or a calculation control unit of a computer, and is connected by the recognition assigning means A control channel is transmitted to the slave device, and a process of recognizing at least the nearest slave device and assigning a predetermined individual number based on a response time for the transmission is performed.

  The invention of claim 2 is connected in a master device of a radio system that is connected in series with one or more slave devices and communicates with each of the slave devices through each communication slot assigned in time division multiplexing. A control channel is transmitted to each slave device, and at the same time, based on a response time for the transmission, at least the nearest slave device is recognized and a recognition assigning unit for assigning a predetermined individual number is provided.

  The invention of claim 8 captures the invention of claim 2 from the viewpoint of a method, and is connected in series with one or more slave devices, and is connected to each slave device by each communication slot assigned in time division multiplexing. In the method for controlling a master device of a wireless system for performing communication, in the master device, the recognition / assignment means is realized by an arithmetic control unit of an electronic circuit or a computer, and each slave device connected by the recognition / assignment means is connected to the master device. A control channel is transmitted, and a process of recognizing at least the nearest slave device and assigning a predetermined individual number based on a response time to the transmission is performed.

  In the present invention, from the upstream side such as the master, the nearest slave is recognized on the downstream side based on the transmission of the control signal and its response time, and an appropriate individual number corresponding to the communication slot is accurately assigned. This eliminates the burden of manually assigning individual numbers and connecting devices according to their order, or going to the slave and resetting them if they are wrong.

  According to a third aspect of the present invention, in the master device according to the second aspect, the recognition assigning unit assigns the communication slots in the order corresponding to the response time for the transmitted control channel among the plurality of communication slots to the slave. It is characterized by assigning to a device.

  The invention of claim 9 is the method of controlling the master device according to claim 8, in which the invention of claim 3 is grasped from the viewpoint of a method. A communication slot having an order corresponding to a response time for the transmitted control channel is allocated to the slave device.

  According to a fourth aspect of the present invention, in the master device according to the second or third aspect, the recognition assigning unit responds to a difference in time required for response to each slave device responding to the transmitted control channel. In this order, individual numbers having different values are assigned.

  A tenth aspect of the invention is a method of controlling a master device according to the eighth or ninth aspect of the invention according to the fourth aspect, which is obtained from the viewpoint of a method. It is characterized in that individual numbers having different values are assigned to the responding slave devices in the order corresponding to the difference in response time.

  In these aspects, a simple process of assigning communication slots in order according to the response time required for response to the control channel transmitted from the master, typically, individual numbers having different values corresponding to the slots, reduces the load. The initial setup of the system is completed quickly.

  The invention according to claim 5 is a slave device of a wireless system that is connected in series with a predetermined master device or another slave device and performs regenerative relaying by each communication slot assigned in time division multiplexing. The relay data amplifier that performs regenerative relay with the master device or other slave devices, the communication means with the slave unit, and the control channel to other connected slave devices, and the response time for this transmission And a recognition assigning means for recognizing at least the nearest slave device and assigning a predetermined individual number.

  The invention of claim 11 captures the invention of claim 5 from the viewpoint of a method, and is connected in series with a predetermined master device or another slave device, and the communication slots assigned in time division multiplexing are used for the communication. In a control method of a slave device in a wireless system having a relay data amplification unit that performs regenerative relay with a master device or another slave device, and a communication unit with a slave unit, the slave device includes an electronic circuit or a computer And a control channel is transmitted to the other connected slave devices by the recognition / assignment unit, and at least the nearest slave device is determined based on the response time for this transmission. A process of recognizing and assigning a predetermined individual number is performed.

  The invention according to claim 6 is the slave device according to claim 5, in which the control channel from the master device side responds at least before the individual number is assigned to the own device, but at least the individual number is assigned to the own device. After that, it has means for transferring to another slave device downstream.

  The invention of claim 12 captures the invention of claim 6 from the viewpoint of a method. In the slave apparatus of claim 11, at least before the individual number is assigned to the own apparatus for the control channel from the master apparatus side. While responding by itself, at least after the individual number is assigned to the own device, it includes a process of transferring to another slave device downstream.

  In these aspects, the individual number assignment according to the connection order is realized quickly and reliably by a simple mechanism in which the slave does not send the control channel to the subsequent slave at least before receiving the individual number.

  As described above, according to the present invention, in the wireless system technology in which a plurality of slaves are connected in series to a master, it becomes possible to automatically and accurately assign individual numbers to each slave according to the connected distance. .

  Next, the best mode for carrying out the present invention will be described with reference to the drawings. Note that assumptions common to the background art and issues are omitted as appropriate.

[1. Constitution〕
In the present embodiment, as shown in the configuration diagram of FIG. 1, one master device (hereinafter also simply referred to as “master”) M is connected to one or more slave devices (hereinafter simply referred to as “slave”) that communicate with the slave unit K. This is a wireless system (hereinafter referred to as “this system”) in which S (S1, S2,...) Are connected in series by wire.

  In this system, the master M communicates with each slave S by each communication slot for time division multiplexing assigned to each slave S. Each slave S is also connected in series with the master M or another slave S, and performs regenerative relaying with the master M or other slave S by each communication slot assigned in time division multiplexing. Note that this embodiment can also be grasped as a control method of the present system and each device.

  The master M is connected to an exchange X provided on a voice adjustment console such as a director by a wired connection to the parent machine handset 20 for the parent machine. By controlling with the control program, the recognition assigning means 10, the call channel establishing section 30, and the inter-slave call section 40 are realized. Of these, the recognition assigning means 10 includes the units 11 to 15 shown in FIG. Including.

  Each slave S includes a relay data amplifying unit 60 that performs regenerative relay with the master M or another slave S through the communication slot, a radio communication unit 50 for communication with the slave unit K, and an antenna A, Each unit can communicate with, for example, four slave units K. To use 16 slave units K in one studio, there are four slaves, several places such as studios and performer areas in the lobby, etc. Is appropriately arranged.

  Further, in the slave device S, the recognition assigning means 70 is realized by controlling an arithmetic control unit of a computer with a predetermined control program by an electronic circuit. Each element 10-15, 30, 40 of the master M and each element 50-70 of the slave S are processing means for realizing and executing the following functional actions.

[2. (Basic effects)
In the present apparatus configured as described above, the recognition assigning means 10 of the master M transmits the control channel to the connected slave S, and at least the latest slave (for example, S1) based on the response time for this transmission. ) And assigning a predetermined individual number.

  For the subsequent slaves and thereafter, the master M or the recognition / assignment means 10 of the slave S1 to which the individual number is assigned similarly transmits a control channel to the other slaves S connected downstream, and this Based on the response time for transmission, the latest slave (for example, S2) is recognized and a predetermined individual number is assigned.

  In this way, by recognizing the nearest slave on the downstream side based on the transmission of the control signal and its response time from the upstream side such as the master and accurately assigning an appropriate individual number corresponding to the communication slot This eliminates the burden of manually assigning individual numbers and connecting devices in that order, or going to the slave and resetting them in the event of an error.

[3. (Recognition method)
More specifically, the method for recognizing the nearest slave from the response time is free, and a plurality of examples and combinations thereof can be considered as follows.

(1) For example, the control channel is transmitted from the master M to all the slaves S, and it is recognized that the response from the slave S is the latest from the slave S. Thus, based on the speed of response to the control channel transmitted from the master M, the nearest slave S can be recognized by simple processing without any restriction such as stopping the signal at the slave S in the middle.

(2) For the control channel from the master M side, at least before the individual number is still assigned to the own device, the slave S does not transfer the control channel to the downstream side, and only the own device responds to the master M, While specifying as the slave S, at least after the individual number is assigned to the own device, it is transferred to another slave S downstream. In this way, the individual number assignment according to the connection order is realized quickly and reliably by the simple mechanism that the slave S does not send the control channel to the subsequent slave at least before receiving the individual number.

  In addition, as a process for appropriately assigning individual numbers, in addition to the above, by confirming that the response time increases within a predetermined range for each slave S far from the master M side, It is desirable to assign a larger individual number one by one while confirming the validity of.

  Whether the processing as described above is performed in order for each individual slave or collectively, each slave S responding to the control channel transmitted from the master M by the recognition allocation unit 10 of the master M. On the other hand, the initial setting of the system can be completed quickly with a small load by a simple process of assigning communication slots in the order according to the time required for each response, typically, individual numbers with different values corresponding to the slots. To do.

[4. Concrete example〕
Subsequently, according to the sequence diagram of FIG. 2, a more specific example in which the assignment of individual numbers as described above is realized by the recognition assigning means 10 and 70 of the master M and the slave S and the relay data amplifying unit 60. Show. That is, every time the power-on detection unit 11 detects the power-on detection in the master M, the control channel transmission unit 12 transmits a control channel (information) to the slave S (step S01). Is received (step S11), the slave S1 returns a response (step S12).

  When the control channel receiving unit 13 from the slave receives this response (step S02), the slot determining unit 14 of the master M calculates the connection distance, that is, the communication distance from the response time from the slave S1 (step S03), and responds accordingly. The individual number, for example, “1” is determined and sent to the slave S1 (step S04).

  In the slave S1, the recognition / assignment means 70 accepts this individual number, and in response to this individual number, the relay data amplification unit 60 establishes an operation timing, for example, by selecting a corresponding communication slot and responds to the master M. Is returned (step S14), and in response to this response from the slave S1 (step S05), the master M shifts to a call operation using the call channel (steps S06 and S07).

  That is, after the master M assigns an individual number to the slave S, the call channel establishment unit 30 in the master M is based on the timer unit 15 between the master M and the slave S or between the slaves S (for example, S1 and S2). Thus, it is possible to exchange the call channel and start the call operation (step S06 and later and step S15 and later).

  Thereafter, the voice data encoded and decoded by the wireless communication unit 50 of each slave S for the slave unit K to be communicated is transmitted to the call unit 40 of the master device M or the relay data amplification unit 60 of the other slave S in between. By performing regenerative relay, a call can be made between desired slave units K and the master unit handset 20 of the master device M.

  Further, the relay data amplifying unit 60 or the recognition allocating unit 70 of the slave S1 has received the individual number as described above from the master, or the master M has performed to himself when the call channel is established. Similarly, the control channel is transmitted to the subsequent slave (step S121), and a number larger than the individual number (for example, 1) assigned to itself is assigned to the subsequent slave (steps S121 to S125).

  That is, typically, the next individual number is “2”, and the slave S1 assigns this individual number to the subsequent slave S2. In other words, the subsequent slave S2, for example, receives the assignment of the next individual number “2” by performing the same correspondence as that performed by the slave S1 on the master M (steps S21 to S24).

  The slave S1 receives the individual number from the master M as described above, or does not send or transfer a control channel signal to the subsequent slave S2 until the communication channel with the master M is established. The first control channel always stops at the slave S1, and the slave S1 receives the assignment of the individual number “1” in response to the master M. Note that any slave S does not issue a control channel to the subsequent slave S when the individual number of the slave S is the maximum number in the specification (for example, 4).

[5. Effects and other embodiments]
As described above, in the present embodiment, in the wireless system technology in which a plurality of slaves are connected in series to the master, it becomes possible to automatically and accurately assign an individual number to each slave according to the connected distance. The other effects described in the above sections are also realized.

  In addition, this invention is not limited to the said embodiment, The thing illustrated below and other embodiment other than that are included. For example, the number of slave units in charge of one slave is not limited to four, and the number of slaves simultaneously connected to the master can be freely selected.

The figure which shows the structure of embodiment of this invention. The sequence diagram in embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10,70 ... Recognition allocation means 11 ... Power-on detection part 12 ... Control channel transmission part 13 ... Control channel reception part 14 ... Slot determination part 15 ... Timer part 20 ... Base unit handset 30 ... Communication channel establishment part 40 ... Communication part 50 ... Wireless communication unit 60 ... Relay data amplification unit A ... Antenna K ... Slave device M ... Master device S (S1, S2-) ... Slave device X ... Exchanger

Claims (12)

In a wireless system in which one or more slave devices communicating with a slave unit are connected in series to a master device, and each communication slot in time division multiplexing is assigned to each slave device to perform regenerative relaying,
The master device includes a recognition assigning unit that transmits a control channel to a connected slave device, and recognizes at least the nearest slave device and assigns a predetermined individual number based on a response time to the transmission. A featured wireless system. In a master device of a wireless system that is connected in series with one or more slave devices and communicates with each of the slave devices through each communication slot assigned in time division multiplexing,
A master device comprising: a recognition assigning means for transmitting a control channel to each connected slave device and recognizing at least the nearest slave device and assigning a predetermined individual number based on a response time to the transmission. apparatus.   3. The master apparatus according to claim 2, wherein the recognition assigning means assigns, to the slave apparatus, communication slots in an order corresponding to a response time for the transmitted control channel among the plurality of communication slots.   The recognition assigning means assigns individual numbers having different values to each slave device responding to the transmitted control channel in an order corresponding to a difference in response time. The master device according to claim 2 or 3. In a slave device of a wireless system, which is connected in series with a predetermined master device or another slave device and performs regenerative relay by each communication slot assigned in time division multiplexing,
A relay data amplification unit that performs regenerative relay with a master device or another slave device through the communication slot;
Means for communicating with the slave unit;
Recognizing and assigning means for transmitting a control channel to other connected slave devices, and recognizing at least the nearest slave device and assigning a predetermined individual number based on a response time to the transmission;
A slave device comprising:   Regarding the control channel from the master device side, it has a means to respond at least before the individual number is assigned to the own device, but to transfer to the other slave device downstream at least after the individual number is assigned to the own device. The slave device according to claim 5. In a control method of a wireless system in which one or more slave devices communicating with a slave unit are connected in series to a master device, and each communication device in time division multiplexing is assigned to each slave device to perform regenerative relaying,
In the master device, the recognition allocation means is realized by an arithmetic control unit of an electronic circuit or a computer,
The recognition assigning means transmits a control channel to a connected slave device, and performs processing for recognizing at least the nearest slave device and assigning a predetermined individual number based on a response time to the transmission. A control method for a wireless system. In a control method of a master device of a wireless system, which is connected in series with one or more slave devices and communicates with each of the slave devices through each communication slot assigned in time division multiplexing,
In the master device, the recognition allocation means is realized by an arithmetic control unit of an electronic circuit or a computer,
The recognition assigning means transmits a control channel to each connected slave device, and performs processing for recognizing at least the nearest slave device and assigning a predetermined individual number based on a response time to the transmission. A method for controlling a master device.   9. The master device according to claim 8, wherein the recognition assigning unit assigns, to the slave device, a communication slot in an order corresponding to a response time for the transmitted control channel among the plurality of communication slots. Control method.   The recognition assigning means assigns individual numbers having different values to each slave device responding to the transmitted control channel in an order corresponding to a difference in time required for each response. The master device control method according to claim 8 or 9. A relay data amplifying unit that is connected in series with a predetermined master device or another slave device, and performs regenerative relay with the master device or another slave device through each communication slot assigned in time division multiplexing; In the control method of the slave device in the wireless system having a communication means with the machine,
In the slave device, the recognition allocation means is realized by an arithmetic control unit of an electronic circuit or a computer,
A process of transmitting a control channel to another connected slave device by the recognition assigning means and recognizing at least the nearest slave device and assigning a predetermined individual number based on a response time to the transmission. A method for controlling a slave device.   For the control channel from the master device side, at least before the individual number is assigned to the own device, it responds itself, but at least after the individual number is assigned to the own device, it includes the process of transferring to the other slave devices downstream The method of controlling a slave device according to claim 11.

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