JP2018157491A - Simultaneous command device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simultaneous command device or the like capable of improving reception probability of command information in a transmission destination.SOLUTION: A simultaneous command device that is a command device simultaneously transmitting a command signal to each communication device belonged to a communication device group designated as a group, comprises: a reception part that receives an acknowledgement response transmitted from the communication device that receives the command signal; a determination part that determines a reception status in each communication device of the command signal in response to the acknowledgement response that performed the reception; a processing part that selects a re-transmission processing for a re-transmission of the command signal to the communication device including at least the communication device which does not perform reception of the acknowledgement response on the basis of a determination result due to the determination; and a transmission part that performs the re-transmission.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a communication apparatus that sends command information to a plurality of transmission destinations.

  The simultaneous command system refers to a system that simultaneously transmits voice, data, FAX information, etc. from a control station to a plurality of mobile stations via a base station by means of a prefectural disaster prevention radio. Non-patent document 1 discloses a communication method performed in the simultaneous command system. Non-Patent Document 1 discloses a method of performing a forced group communication call using a group number, then switching frequencies, and simultaneously transmitting a command signal to each mobile station by TCH. TCH is an abbreviation for Traffic Channel.

  Here, in relation to the present invention, Patent Document 1 discloses FACCH (Fast Associated Control Channel).

  Patent Document 2 discloses a network controller that supports multi-cell service in a cellular communication network.

JP 2011-119887 A Special table 2011-527542 gazette

ARIB standard document STD-T79, [searched on February 28, 2017], Internet (http://www.arib.or.jp/tyosakenyu/kikaku_tushin/tsushin_std-t079..html)

  However, Non-Patent Document 1 has no description regarding reception confirmation of the command information at the destination of the command information. For this reason, when the method disclosed in Non-Patent Document 1 is applied as it is, the sender of the command information cannot confirm a destination that cannot be received. Furthermore, Non-Patent Document 1 does not disclose the re-transmission of command signals and the like. Therefore, when the method disclosed in Non-Patent Document 1 is applied as it is, there is a risk that a large number of destinations that cannot be received are generated.

  An object of the present invention is to provide a simultaneous commanding device and the like that can improve the probability that command information is received at a destination.

  The simultaneous command device of the present invention is a command device that transmits command signals simultaneously to each of the communication devices belonging to the communication device group set as a group, and is sent from the communication device that has received the command signal. A receiving unit that receives a confirmation response, a determination unit that determines a reception status of each of the communication devices of the command signal from the confirmation response that has been received, and a determination result related to the determination A processing unit that selects a retransmission process for retransmitting the command signal to the communication device including at least the communication device that has not received the response; and a transmission unit that performs the retransmission. Prepare.

  The simultaneous command device of the present invention can improve the probability that command information is received at the destination.

It is a conceptual diagram showing the structural example of the communication system of this embodiment. It is a conceptual diagram showing the example of a structure of a command apparatus. It is a conceptual diagram showing the structural example of a communication apparatus. It is a conceptual diagram showing the structural example of uplink information. It is a sequence diagram showing the example of a processing flow of the process performed with the communication system of this embodiment. It is a conceptual diagram showing the process flow example (the 1) of the process of S911. It is a conceptual diagram showing the process flow example (the 2) of the process of S911. It is a conceptual diagram showing the example of a processing flow of the process which the process part of a communication apparatus performs. It is a conceptual diagram showing the example of a processing flow of the process relevant to reception of a confirmation response. It is a conceptual diagram showing the example of a process flow of the process performed after the process shown in FIG. 9 by the process part of an instruction | command apparatus. It is a conceptual diagram showing the example of a process which replaces the process of S301. It is a block diagram showing the structure of the minimum command apparatus of this invention.

[Configuration and operation]
FIG. 1 is a conceptual diagram illustrating a configuration of a communication system 901 that is an example of a communication system according to the present embodiment.

  The communication system 901 includes a command device 101 and communication devices 201 to 20n that are n communication devices.

  The command device 101 transmits command information all at once to each of the communication devices 201 to 20n. Hereinafter, each of the communication devices 201 to 20n is also referred to as “each communication device”. The command device 101 is, for example, a combination of a control table and a base station. The method for simultaneous transmission of the command information is disclosed in Non-Patent Document 1, for example.

  The command device 101 determines whether there is a response from each communication device within a certain period. The command device 101 retransmits the simultaneous notification by a method selected according to the response status from each communication device. A specific example of this method will be described later.

  When each communication device determines that it has received a simultaneous command sent from the command device 101, it sends a confirmation response to the command device 101. Each communication device is, for example, a mobile station.

  FIG. 2 is a conceptual diagram illustrating a configuration of a command device 101a that is an example of the command device 101 illustrated in FIG.

  The command device 101 a includes a communication unit 106, a processing unit 111, a recording unit 126, an input unit 116, and an output unit 121.

  The input unit 116 sends input information input from the outside to the processing unit 111. The input information is, for example, input information using a voice input device or a keyboard.

  The processing unit 111 instructs the communication unit 106 to broadcast the command information to each communication device in accordance with the input information sent from the input unit 116. And the process part 111 determines whether the confirmation response about the simultaneous transmission of the said command information was received from each communication apparatus shown in FIG. Then, the processing unit 111 instructs the communication unit 106 to retransmit the communication contents of the simultaneous communication to each communication device that has not received the confirmation response. The processing unit 111 instructs the communication unit 106 on the retransmission method. For example, when the number or ratio of communication devices that have not received the confirmation response is greater than a threshold Th1, the method retransmits the content by simultaneous communication to each communication device that has not received the confirmation response. It is a method to do. Further, for example, when the number or ratio of the communication devices 201 to 20n that have not received the confirmation response is equal to or less than a threshold value Th1, the command is sent to each communication device that has not received the confirmation response. This is a method of individually resending information.

  The processing unit 111 may specify a frame or a slot to which each communication device sends an acknowledgment to the command device 101a for each communication device that has not received the acknowledgment for the simultaneous transmission. The frame is a frame included in uplink information (hereinafter referred to as “uplink information”) sent from each communication device to the command device 101a. The slot is a time slot that is divided in one frame. Examples of frames and slots in the uplink information will be described later with reference to FIG.

  The communication unit 106 sends the instructed information to each communication apparatus shown in FIG. 1 by the instructed method according to the instruction from the processing unit 111. When the communication unit 106 receives information sent from each communication device, the communication unit 106 sends the received information to the processing unit 111.

  The recording unit 126 holds an ID such as an address of the instruction device 101a and information necessary for the communication unit 106 and the processing unit 111 to perform the above-described processing. Here, ID is an abbreviation for Identifier. In addition, the recording unit 126 holds information instructed by the communication unit 106 and the processing unit 111. The recording unit 126 also sends information instructed by the communication unit 106 or the processing unit 111 to the instructed communication unit 106 or processing unit 111.

  The output unit 121 outputs information instructed from the processing unit 111. The output unit 121 is, for example, a display unit such as a display or a speaker.

  FIG. 3 is a conceptual diagram illustrating a configuration of a communication apparatus 201a that is an example of each of the communication apparatuses 201 to 20n illustrated in FIG. 1 (each communication apparatus).

  The communication device 201 a includes a communication unit 206, a processing unit 211, a recording unit 226, an input unit 216, and an output unit 221.

  The communication unit 206 sends the instructed information to the command device 101 shown in FIG. 1 by the instructed method according to the instruction from the processing unit 211. If the communication unit 206 receives information sent from the command device 101, the communication unit 206 sends the received information to the processing unit 211.

  When the command information sent from the command device 101 is sent from the communication unit 206, the processing unit 211 instructs the communication unit 206 to send an acknowledgment to the command device 101 regarding the reception of the command information. To do. When there is an instruction from the command device 101 regarding the method of sending the confirmation response, the processing unit 211 causes the communication unit 206 to follow the instruction. The instruction is, for example, designation of a frame or slot to be stored for sending the confirmation response.

  The recording unit 226 holds the ID (address, etc.) of the communication device 201a and information necessary for the communication unit 206 and the processing unit 211 to perform the above-described processing. In addition, the recording unit 226 holds information instructed by the communication unit 206 and the processing unit 211. The recording unit 226 also sends information instructed by the communication unit 206 or the processing unit 211 to the instructed communication unit 206 or processing unit 211.

  The input unit 216 sends input information input from the outside to the processing unit 211. The input information is, for example, input information from a keyboard or a voice input device.

  The output unit 221 outputs information instructed from the processing unit 211. The output unit 221 is, for example, a display unit such as a display or a speaker.

  FIG. 4 is a conceptual diagram illustrating a configuration example of uplink information that each of the communication devices 201 to 20n (each communication device) illustrated in FIG. 1 sends to the command device 101.

  The uplink information shown in FIG. 4 includes a plurality of frames with frame numbers.

  Each frame comprises a slot which is a time slot numbered with each slot number 0-3. Each slot may store stored data. Each slot may not store stored data.

The stored data is an acknowledgment response for either TCH or FACCH. Here, TCH is an abbreviation for Traffic Channel. FACCH is an abbreviation for Fast Associated Control Channel. The FACCH is a functional channel for high-speed data transfer, and is used by replacing the TCH stored in the sending signal during high-speed data transfer. TCH and FACCH are described in Patent Document 1, Non-Patent Document 1, and the like.
[Processing flow example]
FIG. 5 is a sequence diagram illustrating a processing flow example of processing performed in the communication system illustrated in FIG. 1.

  The operations in S901 to S903 shown in FIG. 5 are the operations described in Non-Patent Document 1. S911 to S914 are operations not described in Non-Patent Document 1.

  The command device 101 starts the operation shown in FIG. 5 by inputting instruction information from the outside, for example.

  Then, the command device 101 sends a group call signal to each communication device as the operation of S901. In response to the group call signal, each communication device switches the frequency band used for communication to the 260 MHz band.

  Then, in step S <b> 902, command device 101 sends a synchronization signal used for subsequent communication performed with each communication device to each communication device.

  Then, the command device 101 sends a TCH command signal to all the communication devices all at once. Here, the “command signal” refers to a signal including command information. The sending is by 1-to-n communication performed from the command device 101 to each communication device.

  Thereafter, the command device 101 performs uplink priority control according to the priority. The priority control is an operation for confirming whether or not the command signal has arrived at each communication device at this time, and retransmitting the command signal when it does not reach the communication device according to the priority set for each communication device. It is.

  As the operation of S911, the command device 101 sends FACCH information for instructing allocation of a temporal position to which each communication device sends an acknowledgment signal for reception of the command signal to the communication devices all at once. By using FACCH instead of TCH, a quick instruction can be made.

  The temporal position is set according to the priority of each communication device. This setting is, for example, a setting in which a group including a government office is given the highest priority. The temporal position is the aforementioned frame or slot.

  Each communication device that has determined that the FACCH information has been received transmits a FACCH confirmation response to the command device 101 using the allocated temporal position. By using FACCH instead of TCH, command device 101 can obtain a quick confirmation response. If each communication device does not determine that it has received the FACCH information, it does not send the confirmation response to the command device 101 (S9121 to S912n).

  The command device 101 obtains the reception status of the confirmation response for each temporal position (corresponding to the priority) assigned by the operation of S911 as the operation of S914. Then, the command signal is retransmitted to each communication device in accordance with the reception status of the confirmation response for each priority corresponding to the temporal position.

  The retransmission process is performed, for example, by increasing the level of error correction for information transmitted from each communication device for a group of communication devices having a high priority. This is because the confirmation response can be identified even when the reception signal level of the confirmation response sent from each communication device is weak or the noise level of the reception signal is high.

  The retransmission process is performed by, for example, increasing the number of retransmissions of the command signal for a group set to have a high priority. This is to enable each communication device to receive the command signal when a good reception state is obtained in each communication device for any of the command signals transmitted many times.

  The command device 101 does not perform the above-described retransmission processing for each priority until the number of confirmation responses received from each communication device or the ratio of the number exceeds a predetermined threshold, and the confirmation response is not received. The command signal may be transmitted simultaneously to each communication device. The ratio is a ratio of the number of confirmation responses received to the number of destinations of the command information.

  FIG. 6 is a conceptual diagram illustrating a processing flow example (part 1) of the processing of S911 illustrated in FIG. 5 performed by the processing unit 111 of the command device 101a illustrated in FIG. FIG. 6 is an example of a processing flow in which, in the processing of S911, the command device 101 designates only the slot for storing the confirmation response without specifying the frame for storing the confirmation response for each communication device. In the processing flow example, it is assumed that each communication device is classified into first to fourth groups according to priority. The classification information is recorded in the recording unit 126 shown in FIG.

  The processing unit 111 determines whether there is the communication devices 201 to 20n illustrated in FIG. 1 that have not yet performed the processing of S102 as the processing of S101 following the processing of S903 illustrated in FIG.

  The processing unit 111 performs the process of S102 when the determination result of the process of S101 is yes.

  On the other hand, the process part 111 complete | finishes the process shown in FIG. 6, when the determination result by the process of S101 is no.

  When performing the process of S102, the processing unit 111 selects one of the communication devices that has determined that the process of S102 has not been performed yet in the course of the process of S101.

  And the process part 111 determines whether the said communication apparatus belongs to a 1st group as a process of S103.

  The processing unit 111 performs the process of S104 when the determination result of the process of S103 is yes.

  On the other hand, the process part 111 performs the process of S105, when the determination result by the process of S103 is no.

  When performing the process of S104, the processing unit 111 creates a FACCH that designates the slot number # 1 as the same process. Then, the processing unit 111 performs the process of S111.

  When performing the process of S105, the processing unit 111 determines whether the communication device belongs to the second group as the same process.

  The processing unit 111 performs the process of S106 when the determination result by the process of S105 is yes.

  On the other hand, the process part 111 performs the process of S107, when the determination result by the process of S105 is no.

  When performing the process of S106, the processing unit 111 creates a FACCH designating the slot number # 2 as the same process. Then, the processing unit 111 performs the process of S111.

  When performing the process of S107, the processing unit 111 determines whether the communication apparatus belongs to the third group as the same process.

  If the determination result obtained in step S107 is yes, the processing unit 111 performs step S108.

  On the other hand, the process part 111 performs the process of S109, when the determination result by the process of S107 is no.

  When performing the process of S108, the processing unit 111 creates a FACCH that designates the slot number # 3 as the same process. Then, the processing unit 111 performs the process of S111.

  When performing the process of S109, the processing unit 111 determines whether the communication apparatus belongs to the fourth group as the same process.

  If the determination result obtained in step S109 is yes, the processing unit 111 performs step S110.

  On the other hand, the process part 111 performs the process of S101 again, when the determination result by the process of S109 is no.

  When performing the process of S110, the processing unit 111 creates a FACCH that designates the slot number # 4 as the same process. Then, the processing unit 111 performs the process of S111.

  When performing the processing of S111, the processing unit 111 creates a sending signal storing the created FACCH as the same processing. Then, the processing unit 111 instructs the communication unit 106 to send a sending signal further created as the same processing.

  Then, the processing unit 111 performs the process of S101 again.

  As in the processing flow example shown in FIG. 6, the processing flow for designating only the slot for storing the confirmation response for each communication device is performed when the number of priority classifications is equal to or less than the number of slots per frame It is effective for.

  FIG. 7 is a conceptual diagram illustrating a processing flow example (part 2) of the processing of S911 illustrated in FIG. 5 performed by the processing unit 111 of the command device 101a illustrated in FIG. The processing flow example shown in FIG. 7 is a processing flow example in which, in the processing of S911, the command device 101 designates a combination of a frame and a slot for storing a confirmation response for each communication device. In the processing flow example, it is assumed that each communication device is classified into first to fifth groups according to priority. The classification result is recorded in the recording unit 126 shown in FIG.

  The processing unit 111 determines whether there is the communication devices 201 to 20n illustrated in FIG. 1 that have not yet performed the processing of S102 as the processing of S101 following the processing of S903 illustrated in FIG.

  The processing unit 111 performs the process of S102 when the determination result of the process of S101 is yes.

  On the other hand, the process part 111 complete | finishes the process shown in FIG. 6, when the determination result by the process of S101 is yes.

  When performing the process of S102, the processing unit 111 selects one of the communication apparatuses 201 to 20n that has determined that the process of S102 has not been performed in the course of the process of S101.

  And the process part 111 determines whether the said communication apparatus belongs to a 1st group as a process of S103.

  The processing unit 111 performs the process of S104a when the determination result of the process of S103 is yes.

  On the other hand, the process part 111 performs the process of S105, when the determination result by the process of S103 is no.

  When performing the S104a process, the processing unit 111 creates a FACCH that specifies the frame number #N and the slot number # 1 as the same process. Then, the processing unit 111 performs the process of S111.

  When performing the process of S105, the processing unit 111 determines whether the communication device belongs to the second group as the same process.

  The processing unit 111 performs the process of S106a when the determination result of the process of S105 is yes.

  On the other hand, the process part 111 performs the process of S107, when the determination result by the process of S105 is no.

  When performing the process of S106a, the processing unit 111 creates a FACCH that specifies the frame number #N and the slot number # 2 as the same process. Then, the processing unit 111 performs the process of S111.

  When performing the process of S107, the processing unit 111 determines whether the communication apparatus belongs to the third group as the same process.

  If the determination result obtained in step S107 is yes, the processing unit 111 performs step S108a.

  On the other hand, the process part 111 performs the process of S109, when the determination result by the process of S107 is no.

  When performing the processing of S108a, the processing unit 111 creates a FACCH that designates the frame number #N and the slot number # 3 as the same processing. Then, the processing unit 111 performs the process of S111.

  When performing the process of S109, the processing unit 111 determines whether the communication apparatus belongs to the fourth group as the same process.

  The processing unit 111 performs the process of S110a when the determination result by the process of S109 is yes.

  On the other hand, the process part 111 performs the process of S109b, when the determination result by the process of S109 is no.

  When performing the processing of S110a, the processing unit 111 creates a FACCH that designates the frame number #N and the slot number # 4 as the same processing. Then, the processing unit 111 performs the process of S111.

  When performing the process of S109, the processing unit 111 determines whether the communication apparatus belongs to the fourth group as the same process.

  When the determination result obtained in S109b is yes, the processing unit 111 performs the process in S110b.

  On the other hand, the process part 111 performs the process of S101 again, when the determination result by the process of S109b is no.

  When performing the processing of S110b, the processing unit 111 creates a FACCH that designates the frame number # N + 1 and the slot number # 1 as the same processing. Then, the processing unit 111 performs the process of S111.

  When performing the processing of S111, the processing unit 111 creates a sending signal storing the created FACCH as the same processing. Then, the processing unit 111 instructs the communication unit 106 to send a sending signal further created as the same processing.

  Then, the processing unit 111 performs the process of S101 again.

  As shown in the example of the processing flow shown in FIG. 7, the processing flow for designating not only the slot for storing the confirmation information but also the frame for each communication device has the above-described priority classification number of slots per frame. It is also effective when the number is exceeded.

  FIG. 8 is a conceptual diagram illustrating a processing flow example of processing performed by the processing unit 211 of the communication device 201a illustrated in FIG.

  For example, the processing unit 211 starts the processing illustrated in FIG. 8 by starting supply of supplied power.

  And the process part 211 determines whether the signal containing FACCH was received as a process of S201. The processing unit 211 performs the process of S202 when the determination result by the process of S201 is yes.

  On the other hand, the process part 211 performs the process of S201 again, when the determination result by the process of S201 is no.

  When performing the process of S202, the processing unit 211 creates a confirmation response as the same process, and records the created confirmation response in the recording unit 226 shown in FIG. The confirmation response is based on FACCH. The confirmation response includes the ID (address, etc.) of the communication device 201a.

  Then, the processing unit 211 determines whether or not the signal including the FACCH determined to have been received in the process of S201 has the frame number of the frame storing the confirmation response.

  The processing unit 211 performs the process of S205 when the determination result by the process of S204 is no.

  On the other hand, the process part 211 performs the process of S206, when the determination result by the process of S204 is yes.

  When performing the process of S205, the processing unit 211 selects an arbitrary frame number as the same process.

  On the other hand, when performing the process of S206, the processing unit 211 selects the designated frame number as the same process.

  In step S207, the processing unit 211 determines whether or not the FACCH information determined to have been received in step S201 includes designation of a slot number for storing a confirmation response.

  The processing unit 211 performs the process of S208 when the determination result by the process of S207 is no.

  On the other hand, the process part 211 performs the process of S209, when the determination result by the process of S207 is yes.

  When performing the process of S208, the processing unit 211 selects an arbitrary slot number as the same process.

  When performing the process of S209, the processing unit 211 selects the designated slot number as the same process.

  Then, the processing unit 211 creates a transmission signal in which the confirmation response created by the process of S202 is stored in the selected frame and slot as the process of S210. Then, as the same process, the processing unit 211 instructs the communication unit 206 shown in FIG. 3 to transmit the transmission signal. Upon receiving the instruction, the communication unit 206 transmits the transmission signal to the command device 101 illustrated in FIG.

  And the process part 211 determines whether the process shown in FIG. 8 is complete | finished as a process of S211. The processing unit 211 performs the determination by, for example, determining whether there is input of end information from the outside. The end information is, for example, due to supply supply stop.

  If the determination result obtained in step S211 is yes, the processing unit 211 ends the process illustrated in FIG.

  On the other hand, the process part 211 performs the process of S201 again, when the determination result by the process of S211 is no.

  FIG. 9 is a conceptual diagram illustrating a processing flow example of processing related to reception of a confirmation response performed by the processing unit 111 of the command device 101a illustrated in FIG. The process shown in FIG. 9 is a part (first part) of the process of S914 shown in FIG.

  For example, the processing unit 111 starts the process illustrated in FIG. 9 when the process of S911 illustrated in FIG. 5 ends.

  And the process part 111 determines whether the confirmation response was received from either of the communication apparatuses 201 thru | or 20n shown in FIG. 1 as a process of S401.

  The processing unit 111 performs the process of S402 when the determination result by the process of S401 is yes.

  On the other hand, when the determination result of the process of S401 is no, the processing unit 111 performs the process of S401 again.

  When performing the process of S402, the processing unit 111 causes the recording unit 126 illustrated in FIG. 2 to record combination information in which the sender ID, the frame number, and the slot number are combined. Here, the ID is the ID of the sender included in the confirmation response that is determined to have been received in the process of S401. The frame number is the frame number of the frame in which the confirmation response is stored. The slot number is the slot number of the slot in which the confirmation response is stored.

  Then, the processing unit 111 performs the command information related to the combination information recorded in the recording unit 126 by the process of S401 from the unanswered communication device list held by the recording unit 126 illustrated in FIG. Is deleted. Here, the unanswered communication device list is a list of destination IDs of command information created for each combination of the frame number and the slot number in the state before the start of the processing shown in FIG.

  Then, the processing unit 111 determines whether to end the process illustrated in FIG. 9 as the process of S403. The processing unit 111 performs the determination by determining whether a predetermined time has elapsed since the processing illustrated in FIG. 9 is started. Here, it is assumed that the processing unit 111 can use a timer.

  If the determination result obtained in step S403 is yes, the processing unit 111 ends the process illustrated in FIG.

  On the other hand, when the determination result of the process of S403 is no, the processing unit 111 performs the process of S401 again.

  FIG. 10 is a conceptual diagram illustrating an example of a processing flow of processing performed by the processing unit 111 of the command device 101a illustrated in FIG. 2 after the processing illustrated in FIG. The process illustrated in FIG. 10 is a process that is performed after the process illustrated in FIG. 9 in the process of S914 illustrated in FIG. The processing shown in FIG. 10 is performed separately for each priority level, that is, for each combination of a designated frame number and slot number.

  For example, the processing unit 111 starts the process illustrated in FIG. 10 by determining that the process illustrated in FIG. 9 has ended.

  Then, the processing unit 111 determines whether the number of communication devices (or the number of confirmation responses) that have not received a confirmation response in the communication device group of the priority is equal to or less than the threshold value Th1 as the processing of S301. . The threshold value Th1 is a threshold value regarding the number of communication devices (or the number of confirmation responses) that have not received a confirmation response that is predetermined for the process of S301. The threshold value Th1 is held by the recording unit 126 shown in FIG. The threshold value Th1 may be set to a different value for each priority.

  The processing unit 111 performs the process of S302 when the determination result by the process of S301 is yes.

  On the other hand, the process part 111 performs the process of S303, when the determination result by the process of S301 is no.

  When performing the process of S302, the processing unit 111 performs, as the same process, the command signal by one-to-one communication to each communication device that has determined that the confirmation response has not been received in the process of performing the process of S301. Resend. When the processing unit 111 performs the process of S302 and the priority is set high, the processing unit 111 is more likely to receive the command signal at the destination or to confirm the reception at the command device 101a. Resend the command signal. The condition is, for example, to increase the number of transmissions for the transmission of the command signal. In addition, the condition is, for example, that the confirmation of reception at the destination of the command signal is performed with higher error correction when receiving a confirmation response sent by the destination.

  When performing the process of S302, the processing unit 111 transmits the command signal to each communication device that has determined that the confirmation response has not been received in the process of S301 by one-to-n communication. Send all at once. The command signal includes information designating the frame number of the frame to which the transmission destination sends the confirmation response and the slot number of the slot.

  Then, the processing unit 111 determines whether to end the process illustrated in FIG. 10 as the process of S304. The processing unit 111 performs the determination by, for example, determining whether a predetermined time has elapsed after starting the processing illustrated in FIG. Here, it is assumed that the processing unit 111 can use a timer.

  If the determination result obtained in step S304 is yes, the processing unit 111 ends the process illustrated in FIG.

  On the other hand, when the determination result of the process of S304 is no, the processing unit 111 performs the process of S301 again.

  The process of S301 illustrated in FIG. 10 may be replaced by the process illustrated in FIG.

  FIG. 11 is a conceptual diagram illustrating a processing example for replacing the processing of S301 illustrated in FIG.

  When the process illustrated in FIG. 10 is started, the processing unit 111 determines whether the ratio of communication apparatuses that have received the same priority and have not received the confirmation response is equal to or less than the threshold Th2 as the process of S301b. Make a decision. Here, the threshold value Th2 is a threshold value relating to the ratio of communication devices that have received the same priority and that have not received an acknowledgment response for the processing of S301b. The threshold value Th2 may be set to a different value for each priority of the communication device. The threshold Th2 is held by the recording unit 126 shown in FIG.

  If the determination result obtained in step S301b is yes, the processing unit 111 performs the processing in step S302 illustrated in FIG.

  On the other hand, when the determination result obtained in S301b is no, the processing unit 111 performs the process in S303 illustrated in FIG.

  Note that the processing of S301b may be a determination as to whether the value obtained by subtracting the value obtained by dividing the number of confirmation responses by the number of instruction information transmissions from 1 is equal to or less than the threshold Th3, instead of the above. In this case, the threshold value Th3 is a threshold value for a value obtained by subtracting 1 from the value obtained by dividing the number of confirmation responses by the number of instruction information transmissions.

  In the examples shown in FIGS. 10 and 11, there are two options for the command information retransmission method, i.e., simultaneous communication of n and one-to-one individual communication. However, there may be three or more options. When the number of options is three or more, the options other than the two options are, for example, as follows.

  First, the communication devices 201 to 20n shown in FIG. 1 are divided into several groups. And the reception condition of the confirmation response about the said command information for every group is totaled. The reception status is, for example, the ratio of the number of communication devices related to the received confirmation response to the number of communication devices to which the command information is sent for each group. For example, when the ratio of a certain group is equal to or less than a predetermined threshold, the command information is transmitted to the group all at once.

When there are a plurality of groups that perform simultaneous transmission for each group, and the priority among them is determined, the number of options is four or more.
[effect]
In the communication system of the present embodiment, when the command device transmits a command signal to each communication device, the command device causes each communication device to send a confirmation response to the command signal. Therefore, the command device can check whether each communication device has received the command signal.

  The command device further retransmits the command signal to a communication device that has not received the confirmation response. Therefore, the command device can improve the probability that the command signal is received in each communication device.

  The command device further retransmits the command signal to a communication device that has not received the confirmation response according to the reception status of the confirmation response. Therefore, the command device can improve the probability that the command signal is received more efficiently, for example, by performing the retransmission by simultaneous communication while there are many communication devices that have not received an acknowledgment. Can do. Moreover, the said instruction | command apparatus can further aim at the improvement of the probability that the said command signal is received by adjusting a communication condition, when performing the said resending by one-to-one communication.

  FIG. 12 is a block diagram showing the configuration of the simultaneous command device 101x, which is the configuration of the minimum simultaneous command device of the present invention.

  The simultaneous command device 101x is a command device that simultaneously transmits command signals to communication devices belonging to a communication device group (not shown) set as a group.

  The simultaneous command device 101x includes a reception unit 106ax, a determination unit 111ax, a processing unit 111bx, and a transmission unit 106bx.

  The receiving unit 106ax receives the confirmation response sent from the communication device that has received the command signal.

  The determination unit 111ax determines the reception status of each of the communication devices of the command signal from the confirmation response that has been received.

  The processing unit 111bx selects a retransmission process for retransmission of the command signal to the communication device including at least the communication device that has not received the confirmation response based on the determination result related to the determination. Do.

  The transmission unit 106bx performs the retransmission.

  The simultaneous command device 101x switches the retransmission processing for retransmitting the command signal to each of the communication devices from the reception status of the confirmation response from each of the communication devices. Accordingly, the simultaneous command device 101x can perform a retransmission process suitable for the reception status of the confirmation response from each of the above.

  Therefore, the transfer control device 106x achieves the effects described in the section [Effects of the Invention] by the above configuration.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and further modifications, substitutions, and adjustments may be made without departing from the basic technical idea of the present invention. Can be added. For example, the configuration of the elements shown in each drawing is an example for helping understanding of the present invention, and is not limited to the configuration shown in these drawings.

  Further, a part or all of the above-described embodiment can be described as in the following supplementary notes, but is not limited thereto.

(Appendix A1)
A command device that simultaneously transmits a command signal to each of the communication devices belonging to the communication device group set as a group,
A receiving unit that receives an acknowledgment sent from the communication device that has received the command signal;
A determination unit that determines a reception status of each of the communication devices of the command signal from the confirmation response that has been received;
A processing unit that selects a retransmission process for retransmission of the command signal to the communication device including at least the communication device that has not received the confirmation response according to the determination result related to the determination;
A transmitter that performs the retransmission; and
A simultaneous command device.

(Appendix A1.1)
The selection related to the selection is a first simultaneous transmission that is a simultaneous transmission to a target communication device that is the communication device to be retransmitted, and an individual transmission that is an individual transmission to each of the target communication devices The simultaneous command device described in Appendix A1.

(Appendix A1.2)
The simultaneous command device according to appendix A1 or appendix A1.1, wherein the option includes a second broadcast that is a batch transmission to a part of the target communication devices of the plurality of target communication devices.

(Appendix A2)
The simultaneous command device according to appendix A1, wherein the determination is performed based on the number of confirmation responses that have been received.

(Appendix A2.1)
The simultaneous command device according to any one of Supplementary Notes A1 to A2, wherein the determination is performed based on the number of the communication devices related to the confirmation response that has been received.

(Appendix A3)
The simultaneous command device according to any one of supplementary notes A1 to A2.1, wherein the determination is performed based on a ratio of the number of confirmation responses that have been received to the number of destinations of the command signal.

(Appendix A3.1)
The determination is performed based on a ratio of the number of the communication devices related to the confirmation response that has been received to the number of the communication devices to which the command signal is sent, and any one of Supplementary Notes A1 to A3. The described simultaneous command device.

(Appendix A4)
The simultaneous command device according to any one of Supplementary Notes A1 to A3.1, wherein the determination is performed for each priority level set in the communication device.

(Appendix A5)
The simultaneous command device described in appendix A4, wherein the higher the level is, the larger the number of retransmissions is.

(Appendix A6)
The simultaneous command device according to Supplementary Note A4 or Supplementary A5, wherein the higher the level, the higher the degree of error correction when determining the reception of the confirmation response related to the retransmission.

(Appendix A7)
The simultaneous command device according to any one of Supplementary Notes A1 to A6, wherein each of the communication devices designates a temporal position in which the confirmation response is stored in a signal that stores the confirmation response. .

(Appendix A8)
The simultaneous command device according to any one of Supplementary Notes A1 to A7, wherein a slot for storing the confirmation response is designated in a signal for storing the confirmation response to each of the communication devices.

(Appendix A9)
The simultaneous command device according to any one of Supplementary Notes A1 to A8, wherein a frame for storing the confirmation response is designated in a signal for storing the confirmation response to each of the communication devices.

(Appendix A10)
In each of the communication devices, in the signal storing the confirmation response, the frame storing the confirmation response and the slot in the frame are specified. Simultaneous command device.

(Appendix A11)
The simultaneous command device according to any one of supplementary notes A7 to A10, wherein the designation is performed by a signal by a FACCH (Fast Associated Control Channel).

(Appendix A12)
The simultaneous command device according to any one of supplementary notes A7 to A11, wherein the designation is performed by instruction information that is transmitted to the communication device at once.

(Appendix A13)
The simultaneous command device according to any one of supplementary notes A1 to A12, wherein the confirmation response is a signal by a FACCH (Fast Associated Control Channel).

(Appendix A14)
The simultaneous command device according to any one of Supplementary Note A1 to Supplementary Note A13, in which the transmission is performed following transmission of a group call signal for performing the transmission and transmission of a synchronization signal for performing the transmission.

(Appendix A15)
The simultaneous command device according to any one of supplementary notes A1 to A14, wherein the command signal is TCH.

(Appendix A16)
The simultaneous command device according to any one of appendices A1 to A15, wherein the command signal is stored in a frame.

(Appendix A17)
The simultaneous command device according to any one of appendices A1 to A16, wherein the command signal is stored in a slot.

(Appendix A18)
The simultaneous command device according to any one of supplementary notes A1 to A17, wherein each of the communication devices is a mobile station.

(Appendix A19)
The simultaneous commanding device according to any one of Supplementary Notes A1 to A18, which is a combination of a control table and a base station.

(Appendix B1)
A communication system comprising the simultaneous command device described in any one of appendices A1 to A19 and the communication device group.

(Appendix C1)
Sending command signals to each of the communication devices belonging to the communication device group set as a group all at once,
From the confirmation response sent and received from each of the communication devices that received the command signal, to determine the reception status of the command signal in the communication device,
According to the determination result related to the determination, performing a selection of a retransmission process for retransmitting the command signal to the communication device including at least the communication device that has not received the confirmation response,
Perform the retransmission,
Command method.

(Appendix D1)
Processing for simultaneously transmitting command signals to communication devices belonging to a communication device group set as a group;
From the confirmation response sent from the communication device that received the command signal and received, processing for determining the reception status of each of the communication devices of the command signal;
According to the determination result related to the determination, a process of selecting a retransmission process for retransmission of the command signal to the communication apparatus including at least the communication apparatus that has not received the confirmation response;
Processing for performing the retransmission;
A command program that also runs a computer.

101, 101a Command device 101x Simultaneous command device 106 Communication unit 106ax Receiving unit 106bx Transmission unit 111, 111bx Processing unit 111ax Determination unit 116 Input unit 121 Output unit 126 Recording unit 201, 202, 203, 20n Communication device 206 Communication unit 211 Processing unit 216 Input unit 221 Output unit 226 Recording unit 901 Communication system

Claims (10)

A command device that simultaneously transmits a command signal to each of the communication devices belonging to the communication device group set as a group,
A receiving unit that receives an acknowledgment sent from the communication device that has received the command signal;
A determination unit that determines a reception status of each of the communication devices of the command signal from the confirmation response that has been received;
A processing unit that selects a retransmission process for retransmission of the command signal to the communication device including at least the communication device that has not received the confirmation response according to the determination result related to the determination;
A transmitter that performs the retransmission; and
A simultaneous command device.   The selection related to the selection is a first simultaneous transmission that is a simultaneous transmission to a target communication device that is the communication device to be retransmitted, and an individual transmission that is an individual transmission to each of the target communication devices The simultaneous command device according to claim 1, comprising:   The simultaneous command device according to claim 2, wherein the option includes a second simultaneous transmission that is a simultaneous transmission to a part of the target communication devices of the plurality of target communication devices.   The simultaneous command device according to any one of claims 1 to 3, wherein the determination is made based on a number of the communication devices related to the confirmation response that has been received.   The determination is performed based on a ratio of the number of the communication devices related to the confirmation response that has been received to the number of the communication devices to which the command signal is sent. The simultaneous command device described in 1.   The simultaneous command device according to any one of claims 1 to 5, wherein the determination is performed for each priority level set in the communication device.   The simultaneous command device according to claim 6, wherein the higher the level is, the larger the number of retransmissions is.   The simultaneous command device according to claim 6 or 7, wherein the higher the level, the higher the degree of error correction when determining the reception of the confirmation response related to the retransmission.   The simultaneous command device according to claim 1, wherein a slot for storing the confirmation response is designated for each of the communication devices in a signal for storing the confirmation response.   The simultaneous command device according to any one of claims 1 to 9, wherein for each of the communication devices, a frame for storing the confirmation response is designated in a signal for storing the confirmation response.

Images