JP6037769B2 - Electronic device, method of operating electronic device, and program - Google Patents

Description

  The present invention relates to a technique for transmitting an Ack signal transmitted from a data receiving side to a transmitting side in order to indicate that the data transmission is successful in transmission / reception of a data transmission signal.

  Conventionally, in data reception using a plurality of antennas, for example, SISO (Single Input Single Output), it is possible to reduce reception errors by switching signals with good reception sensitivity and performing signal reception. In addition, in the case of MIMO (Multiple Input Multiple Output), the same signal received by each antenna is subjected to synthesis processing or partial replacement processing, thereby synthesizing the same signal and increasing the gain or removing the missing data portion. It can also be supplemented. Alternatively, it is possible to improve the transmission speed by dividing and transmitting a signal with different carrier frequency bands for one data, and receiving and combining the signals with respective antennas.

JP 2000-332666 A JP 2006-254266 A

  In the MIMO, a plurality of reception modules corresponding to a plurality of antennas are provided, and the same reception ID is set in each module so that the same data can be received and the various processes described above can be performed. Yes.

  Here, in the data transmission / reception, it is confirmed that the data is normally received by the device on the receiving side, and an Ack signal indicating that is returned to the transmitting side.

  However, when a plurality of reception modules corresponding to a plurality of antennas are provided as described above and the same reception ID is set for each module, the same Ack signal is returned from the plurality of modules to the transmission side. It will be. Then, there is a problem in that a transmitting side device that has received a plurality of the same Ack signals cannot communicate well unless a special control program is executed.

  In order to solve the above problems, according to the present invention, when data reception is successful in a plurality of receiving modules corresponding to a plurality of antennas in the above case, an Ack signal is transmitted only from one of them. An electronic device configured as described above is provided.

  Specifically, when two or more reception modules that select and receive signals using the same reception ID and reception is successful using the two or more reception modules, from any one of the reception modules And an Ack control unit that controls to return an Ack signal only.

  In addition to the above configuration, an electronic apparatus is further provided that further includes a signal generation unit that generates one signal transmitted from the transmission side from two or more signals received by the two or more reception modules. Also provided is an electronic device that further includes a success determination unit that determines whether reception is successful using the signal generated by the signal generation unit.

  Also, a communication having the above-described configuration and having a radio wave intensity holding unit for holding the radio wave intensity of each receiving module, and the Ack control unit returning the Ack signal based on the held radio wave intensity of each receiving module An electronic device having first reply module determining means for determining the module is also provided.

  Or it is provided with the above-mentioned composition, and the reply destination of the Ack signal is provided in the rotator, and has a rotation parameter acquisition unit that acquires a rotation parameter indicating the rotation angle of the rotator, and the Ack control unit is based on the acquired rotation parameter. There is provided an electronic apparatus having second reply module determining means for determining one communication module that returns the Ack signal.

  Also provided are a method for operating the electronic device as described above and a program for operating the electronic device as described above.

  According to the present invention configured as described above, even when data is received by two or more receiving modules that receive data by the same reception ID, one Ack signal can be returned. Therefore, even if a special control program is not prepared on the transmitting device side, it is possible to perform suitable data reception according to the return of the Ack signal by the plurality of antennas and the corresponding plurality of receiving modules on the receiving side. Become.

FIG. 1 is a conceptual diagram for explaining an example of data transmission in a data transmission system including an electronic device in the first embodiment. FIG. 6 is a diagram illustrating an example of functional blocks in the electronic device according to the first embodiment. 1 is a diagram illustrating an example of a hardware configuration in an electronic device according to a first embodiment. 7 is a flowchart illustrating an example of a process flow in the electronic device according to the first embodiment. FIG. 6 is a diagram illustrating an example of functional blocks in the electronic device according to the second embodiment. The figure showing an example of the field intensity table currently hold | maintained at the field intensity holding part of the electronic device of Example 2. The figure showing another example of the functional block in the electronic device of Example 2. FIG. 10 is a diagram for explaining an example of determination processing by the second reply module determination unit of the electronic device according to the second embodiment. 7 is a flowchart illustrating an example of a process flow in the electronic device according to the second embodiment. 7 is a flowchart illustrating another example of the process flow in the electronic device according to the second embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to these embodiments, and can be implemented in various modes without departing from the spirit of the present invention. In the first embodiment, claims 1, 2 and 3 will be mainly described. In the second embodiment, claim 4 will be mainly described. In the third embodiment, claim 5 will be mainly described.

Example 1
<Overview>
FIG. 1 is a conceptual diagram for explaining an example of data transmission in the present embodiment. As shown in this figure, data having a reception ID “ABC...” Is transmitted from the transmission side device (0110) by wireless communication.

  On the other hand, in the receiving-side electronic device (0100), two receiving modules (0101A, 0101B) having a receiving ID “ABC...” Are installed. Therefore, the data transmitted from the transmitting terminal is received almost simultaneously by the two receiving modules. The data received by the two receiving modules is combined as, for example, one data, or one of the data is deleted, such as the one having lower reception sensitivity.

  In the electronic apparatus according to the present embodiment, data is received by the two receiving modules having the same reception ID, and when the reception is successful, the Ack signal is transmitted from only one of the receiving modules as shown in the figure. A reply is made to the sending terminal.

  In this way, the same Ack signal is not returned from the plurality of receiving modules to the transmitting side terminal. Therefore, the transmitting side terminal has a special control program for distinguishing and processing the same Ack signal. Even if it is not executed, data transmission can be suitably performed.

<Functional configuration>
FIG. 2 is a diagram illustrating an example of functional blocks in the electronic apparatus according to the present embodiment. Note that the functional blocks of the apparatus described below can be realized as a combination of hardware and software. Specifically, if a computer is used, a CPU, a main memory, a bus, or a secondary storage device (a hard disk, a non-volatile memory, a storage medium such as a CD or a DVD, a read drive for the medium, etc.), information Input devices used for input, printing equipment, display devices, other hardware components such as external peripheral devices, interfaces for external peripheral devices, communication interfaces, driver programs for controlling these hardware, Other examples include application programs and user interface applications. Then, by CPU processing according to the program developed on the main memory, the data input from the input device or other interface and held in the memory or hard disk is processed and stored, An instruction for controlling the software is generated. Alternatively, the functional blocks of this apparatus may be realized by dedicated hardware.

  Each embodiment described in the present specification can be realized not only as an apparatus but also as a method. Moreover, a part of such an apparatus can be configured as software. Furthermore, a software product used to cause a computer to execute such software and a recording medium on which the product is fixed are naturally included in the technical scope of each embodiment described in this specification (this specification The same throughout.)

  As shown in FIG. 2, the “electronic device” (0200) of this embodiment includes two or more “reception modules” (0201A, 0201B) and an “Ack control unit” (0202).

  Two or more “reception modules” (0201) are provided in the electronic device and have a function of selecting and receiving signals using the same reception ID. For example, an antenna, a demodulator, a signal amplifier, and an A / D converter One receiving module can be realized by a combination of the above.

  Specifically, this receiving module receives, for example, a communication radio wave, and executes a process for confirming whether there is another electronic device that is currently communicating with the transmitting device. Then, if there is no other electronic device in communication, communication is started as it is, and if there is another electronic device in communication, communication with the transmission side device is performed after a waiting time randomly determined after the end of the communication. Start. Note that the above-described processes may be omitted as long as the transmission-side device and a plurality of electronic devices are configured to be capable of simultaneous communication, such as using frequency hopping.

  When communication between the transmission-side device and the electronic device is started, a carrier wave transmitted from the transmission-side device is received by the antenna. Then, the received carrier wave is converted into a baseband signal via an antenna, which is encoded by the processing of the A / D converter. The encoded information is demodulated by a demodulator and acquired as data.

  Since the plurality of reception modules provided in the electronic device have the same ID, the same data is received by the plurality of reception modules. The “reception ID” is an ID used for specifying a data receiving terminal at the time of communication, and includes, for example, a MAC address.

  The “Ack control unit” (0202) has a function of controlling to return an Ack signal only from any one of the reception modules when reception is successful using the two or more reception modules. Or a main memory, an Ack control program, or the like.

  Specifically, packet data (which may be one packet data or a combination of a plurality of packet data) successfully received by each of two or more receiving modules are compared by arithmetic processing of an arithmetic unit, and two or more received data are the same. If it is determined that the packet data is, the receiving module is controlled so that the Ack signal is not returned from other than one receiving module.

  Further, if it is set to return an Ack signal every time a plurality of packet data sets are received, the electronic apparatus of this embodiment further includes a “signal generation unit” and a “success determination unit” (not shown). May be.

  The “signal generation unit” has a function of generating one signal transmitted from the transmission side from two or more signals received by the two or more reception modules. For example, an analog signal synthesis circuit using an operational amplifier or the like, DA It can be realized by a digital synthesizing circuit or the like that performs synthesis by arithmetic processing of an arithmetic unit after converting an analog signal into digital data by a converter.

  Further, this combining may be a process of combining the same signal to obtain a gain, or a combining process for complementing a packet that has failed to be received.

  The “success determination unit” has a function of determining whether reception is successful using the signal generated by the signal generation unit, and can be realized by, for example, an arithmetic device, a main memory, a success determination program, or the like.

  Specifically, the packet data obtained by demodulating the signal synthesized by the analog / digital synthesis circuit by the processing of the demodulation circuit is referred to determine whether there is data corruption or packet missing. And when it is a judgment result that there is no data corruption or packet unit omission, the Ack control unit outputs a command signal for controlling to return an Ack signal only from one receiving module. That's it.

<Hardware configuration>
FIG. 3 is a schematic diagram illustrating an example of a configuration of the electronic device when the functional components are realized as hardware. The operation of each hardware component in the Ack signal transmission control process will be described with reference to FIG.

  As shown in this figure, the electronic apparatus includes a plurality of (two in the figure) pairs of “antennas” (0301), “A / D converters” (0302), and “demodulators” (0303) that constitute the receiving module. I have. In addition, an “arithmetic unit” (0304) and a “main memory” (0305) functioning as an Ack control unit are provided, which are connected to each other via a system bus or other communication path, and transmit / receive signals and data, and Process.

  A program is read out to the “main memory”, and the “arithmetic unit” refers to the read out program, and executes various arithmetic processes according to the procedure shown there. In addition, each “main memory” is assigned a plurality of addresses, and in the arithmetic processing of the “arithmetic unit”, the address is specified and accessed to store the stored data. Processing can be performed.

  Here, after a predetermined communication procedure, when communication with the transmission side device becomes possible with two “antennas”, the carrier wave transmitted from the transmission side device is received by each “antenna”. The received carrier wave is converted into a baseband signal via an “antenna”, which is encoded by processing of an “A / D converter”. Further, filtering and amplification processing may be executed via various “filters” and “amplifiers” (not shown) before and after the encoding processing.

  The encoded information is demodulated by a “demodulator” and acquired as frame data.

  At this time, the “arithmetic unit” determines whether the received frame is not damaged according to a predetermined inspection means, and when it is determined that there is no damage, from any one antenna according to the Ack control program. A control command is output so that only the Ack signal (packet signal with the Ack flag turned on) is output to the transmission side device. Then, according to the control command, packet data with an Ack flag turned on by processing of a “modulation circuit” (not shown) is modulated to a baseband signal and output from only one “antenna” in combination with a carrier wave. That's it.

<Process flow>
FIG. 4 is a flowchart illustrating an example of a processing flow in the electronic apparatus according to the present exemplary embodiment. The steps shown below may be steps executed by each hardware configuration of the computer as described above, or may be processing steps that constitute a program for controlling the computer recorded on a medium. I do not care.

  As shown in this figure, first, signals are received by two or more receiving modules that select and receive signals using the same reception ID (receiving step: S0401), and use the two or more receiving modules. When the reception is successful, control is performed so that the Ack signal is returned only from any one of the receiving modules (Ack control step: S0402).

  Although not shown, one signal transmitted from the transmission side is generated from two or more signals received in the reception step (signal generation step), or the signal generated in the signal generation step is used. It may be determined whether the reception is successful (success determination step).

<Brief description of effect>
As described above, even when data is received by two or more receiving modules that receive data with the same reception ID, the electronic device of this embodiment can return one Ack signal. Therefore, even if a special control program is not prepared on the transmitting device side, it is possible to perform suitable data reception according to the return of the Ack signal by the plurality of antennas and the corresponding plurality of receiving modules on the receiving side. Become.

<< Example 2 >>
<Overview>
The present embodiment is characterized by further having a function of determining which receiving module returns an Ack signal according to a predetermined condition based on the electronic device of the above-described embodiment.

  Specifically, first, there is a method of measuring the radio wave intensity for each antenna of the receiving module and determining, for example, the receiving module including the antenna having the strongest radio wave intensity as the output source of the Ack signal.

  Second, for example, when an Ack signal return destination (that is, a device on the data transmission side) is provided in a rotating body such as a tire, and the transmission side device is rotated in accordance with the rotation of the rotating body. Determines, as an output source of the Ack signal, for example, a reception module including an antenna closer to the transmission side device at the output timing of the Ack signal according to the rotation parameter indicating the rotation angle such as the rotation speed and the rotation speed. Examples include methods.

<Functional configuration 1>
FIG. 5 is a diagram illustrating an example of functional blocks in the electronic apparatus according to the present embodiment. As shown in this figure, the “electronic device” (0500) of the present embodiment is based on the first embodiment and includes two or more “reception modules” (0501A, 0501B), “Ack control unit” (0502), Have. In addition, since these component requirements have already been described in the said Example, the description is abbreviate | omitted.

  The electronic apparatus according to the present embodiment further includes a “radio wave intensity holding unit” (0503), and the Ack control unit includes “first reply module determining unit” (0504).

  The “radio wave intensity holding unit” (0503) has a function of holding the radio wave intensity of each receiving module, and can be realized by various storage devices such as a flash memory.

  FIG. 6 is a diagram illustrating an example of a radio wave intensity table held by the radio wave intensity holding unit. As shown in this figure, for example, the reception module 1 has a radio field intensity of 50 dBμV / m, and the reception module 2 has a radio field intensity of 100 dBμV / m. And the measured radio field intensity is held in association with each other.

  The method for measuring the radio field intensity at each antenna is not particularly limited. For example, the antenna voltage may be measured to update the radio field intensity every time a signal is received.

  The “first reply module determination unit” (0504) has a function of determining one communication module that returns the Ack signal based on the radio wave intensity of each held reception module. This can be realized by the first reply module determination program.

  The determination based on the radio wave intensity is not particularly limited, but basically, in view of the fact that it is preferable that the return of the Ack signal is suitably executed without any error, for example, the radio wave intensity having the strongest (or any higher rank) It is preferable that the receiving module including the antenna (which is further selected under a predetermined condition) is determined as the return source of the Ack signal.

<Functional configuration 2>
FIG. 7 is a diagram illustrating another example of functional blocks in the electronic apparatus according to the present embodiment in a case where the return body of the Ack signal is provided in the rotating body. As shown in this figure, another “electronic device” (0700) of the present embodiment is based on the first embodiment and includes two or more “reception modules” (0701A, 0701B) and “Ack control unit” (0702). And). In addition, since these component requirements have already been described in the said Example, the description is abbreviate | omitted.

  Another electronic apparatus according to the present embodiment further includes a “rotation parameter acquisition unit” (0703), and the Ack control unit includes “second reply module determination unit” (0704).

  The “rotation parameter acquisition unit” (0703) has a function of acquiring a rotation parameter of a rotating body provided with a reply destination of the Ack signal. For example, an arithmetic device, a main memory, a rotation parameter acquisition program, It can be realized by a sensor or the like. The “rotation parameter” refers to information indicating a rotation angle. Further, in addition to the rotation angle, information such as the number of rotations, the rotation speed, and the acceleration may be included.

  Then, the rotation parameter acquisition unit calculates the rotation angle of the rotating body using, for example, a sensing result from an acceleration sensor or a gyro sensor attached to the rotating body. Also, the sensing result may be acquired together with the radio wave intensity, reception success / error rate, etc. when each receiving module receives the sensing result.

  The “second reply module determining means” (0704) has a function of determining one communication module that returns the Ack signal based on the acquired rotation parameter. For example, an arithmetic device, a main memory, and a second reply module determination It can be realized by a program. In this second reply module determining means, for example, according to the radio wave intensity and reception success / error rate for each rotation angle of each receiving module acquired as described above, the radio wave intensity at the rotation angle is strong or the reception success rate is For example, the receiving module having the higher (lower error rate) is determined as the output return source of the Ack signal.

  FIG. 8 is a diagram for explaining an example of another determination process by the second reply module determination unit. As shown in this figure, for example, the current position of the data transmission side device is calculated by calculation based on information such as the rotation angle that is the acquired rotation parameter and the position of the data transmission side device on the rotating body at the start of rotation. It is determined that the rotating body is on the right side when viewed from the direction of the rotation axis. Then, the second reply module determining means determines the receiving module 1 that is close to the right side, and similarly on the right side when viewed from the direction, as the reply source of the Ack signal.

<Processing flow 1>
FIG. 9 is a flowchart illustrating an example of a processing flow in the electronic apparatus according to the present exemplary embodiment. The steps shown below may be steps executed by each hardware configuration of the computer as described above, or may be processing steps that constitute a program for controlling the computer recorded on a medium. I do not care.

  As shown in this figure, first, signals are received by two or more receiving modules that perform selection and reception using the same reception ID (reception step: S0901). Then, when reception is successful using the two or more receiving modules, the radio field intensity of each receiving module held in a flash memory or the like is acquired (radio wave intensity acquisition step: S0902), and based on the acquired radio field intensity One communication module that returns an Ack signal is determined (first response module determination step: S0903). Then, control is performed so that an Ack signal is returned only from one of the determined receiving modules (Ack control step: S0904).

<Processing flow 2>
FIG. 10 is a flowchart showing another example of the flow of processing in the electronic apparatus of the present embodiment when the return destination of the Ack signal is provided in the rotating body. The steps shown below may be steps executed by each hardware configuration of the computer as described above, or may be processing steps that constitute a program for controlling the computer recorded on a medium. I do not care.

  As shown in this figure, first, signals are received by two or more receiving modules that perform selection and reception using the same reception ID (reception step: S1001). Then, when reception is successful using the two or more receiving modules, the rotation parameter of the rotating body including the return destination of the Ack signal is acquired (rotation parameter acquisition step: S1002), and the Ack signal is obtained based on the acquired rotation parameter. Is determined as a communication module (second reply module determination step: S1003). Then, control is performed so that the Ack signal is returned only from any one of the determined receiving modules (Ack control step: S1004).

<Brief description of effect>
As described above, in the electronic apparatus according to the present embodiment, for example, according to the radio wave intensity of the antenna of the receiving module, or if the return destination of the Ack signal is provided in the rotating body, according to the rotation parameter, for example, the Ack signal It is possible to determine one receiving module that returns an Ack signal so that the reply is suitably executed without error.

0200 Electronic device 0201A Reception module 1
0202B reception module 2
0203 Ack control unit

Claims (6)

Two or more receiving modules that select and receive signals using the same reception ID; and
An Ack control unit that controls to return an Ack signal only from any one of the reception modules when reception is successful using the two or more reception modules;
A radio wave intensity holding unit that holds the radio wave intensity of each receiving module;
The Ack control unit is an electronic device having first reply module determining means for determining one communication module that returns the Ack signal based on the radio wave intensity of each of the held reception modules . Two or more receiving modules that select and receive signals using the same reception ID; and
An Ack control unit that controls to return an Ack signal only from any one of the reception modules when reception is successful using the two or more reception modules;
The return destination of the Ack signal is provided in the rotating body
While having a rotation parameter acquisition unit for acquiring a rotation parameter indicating the rotation angle of the rotating body,
The Ack control unit is an electronic device having second reply module determining means for determining one communication module that returns the Ack signal based on the acquired rotation parameter . Electronic device according to claim 1 or 2 further comprising a signal generator for generating a first signal which is the transmitting side and transmitted from two or more signals received by the two or more receiving modules. The electronic apparatus according to claim 3 , further comprising a success determination unit that determines whether reception is successful using a signal generated by the signal generation unit. Two or more receiving modules that select and receive signals using the same receiving ID, and an operation method of an electronic device having a radio wave intensity holding unit that holds the radio wave intensity of each receiving module ,
An Ack control step for controlling to return an Ack signal only from one receiving module determined based on the radio field intensity of each receiving module when reception is successful using the two or more receiving modules; Electronic device operation method to be executed. A program for operating an electronic device having two or more receiving modules that select and receive signals using the same receiving ID and that has a radio wave intensity holding unit that holds the radio wave intensity of each receiving module. ,
An Ack control step for controlling to return an Ack signal only from one receiving module determined based on the radio field intensity of each receiving module when reception is successful using the two or more receiving modules; A program to be executed by an electronic device.

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