JPH09168178A - Radio selective call receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a receiver to decide a message receiving mistake by itself and to notify a user of this receiving mistake and also the number of the mistaken message. SOLUTION: The continuous counter information and retransmission information which are different from the message data sent from a radio call base station and vary with every transmission of a message are received. Then this received counter information is stored in a call counter storage means 9 together with the counter information received in the preceding time. Thus a receiving mistake detection means 10 can detect a receiving mistake based on the continuity of two different counter value which are stored in the means 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio selective call receiver for receiving a counter value, a message, and a selective call number, which are transmitted from a radio selective call base station and whose values change every transmission.

[0002]

2. Description of the Related Art In recent years, radio selective call receivers have been put to practical use in various systems. The basic operation of a conventional radio selective calling receiver (hereinafter referred to as a pager receiver) will be described below. A radio selective calling base station (hereinafter referred to as a pager base station) modulates a selective calling number and message data and transmits the modulated data. When the pager receiver receives the modulated and transmitted signal, the pager receiver compares the selective call number retrieved by demodulating with the previously stored page number of the pager receiver, and if they match, stores the message data and displays it. A ringing operation is performed with a buzzer or a buzzer sound. The base station may send the same message multiple times in succession in order to avoid a reception error of the pager receiver. The operation of the conventional pager receiver will be described below. FIG. 9 is a block diagram showing the overall configuration of a conventional pager receiver. In the figure, the pager receiver comprises a receiving means 1, a calling number storing means 2, a calling number collating means 3, a message acquisition SW 4, a data extracting means 5, a message storing means 6, and a message block end recognizing means 7. FIG. 10 is a simplified diagram of a signal format transmitted by a conventional pager base station.

The receiving means 1 receives the signal modulated and transmitted from the pager base station, and outputs the demodulated data to the calling number collating means 3 and the message block end recognizing means 7.
The data is also output to the message acquisition SW4 in the invalid state. Next, the calling number collating means 3 compares and collates the calling number previously stored in the calling number storage means 2 with the calling number shown in FIG. 10, and if they are judged to be the same, it outputs a valid signal to the message acquisition SW4. The message acquisition SW 4 in the valid state outputs the data to the data extracting means 5. The data fetching means 5 fetches the first message shown in FIG. 10 and stores the fetched message in the message storage means 6.
If the reception state is bad, the correct reception operation cannot be performed, and thus the second message acquisition operation of FIG. 10 is performed. Further, if the reception state at the time of the calling number comparing operation by the calling number collating means 3 is poor, the comparison is performed from the comparison and collation of the calling number transmitted next. Message block end recognition means 7
Recognizes the end of the message block of the received data, determines that the reception has ended, and outputs an invalid signal to the message acquisition SW4. However, if the message block end recognizing means 7 recognizes the end of the message block without succeeding in the second message acquisition operation and the Nth message extraction, the message acquisition SW4.
Since an invalid signal is output to, reception error occurs.

However, it is impossible for the pager receiver to judge the occurrence of a message reception error by itself, which is a serious drawback for the unidirectional communication system. In particular, a radio selective call receiver having a reception error detection function is disclosed in Japanese Patent Laid-Open No. Hei 3 (1998)
The thing described in -216029 publication is known. By providing a storage means for storing the unreceivable time, the unreceivable time can be stored and confirmed later, so it is possible to determine whether the cause of the call error is a reception error by the handset or a transmission error by the transmission side. This is to make it easy to judge, but the mistake in this case occurs because the user intentionally creates a state in which the pager terminal cannot receive due to the power cut-off of the pager terminal, and the pager terminal is not able to receive during the receiving operation. Is not a detection method. Also, the cause of the reception error is not what the pager receiver determines by itself.

[0005]

In this conventional radio selective call receiver, even if the message reception fails, the user cannot be notified of the message reception failure and important messages can be missed. There was a nature. Therefore, according to the present invention, the receiver determines the message reception failure by itself, notifies the user, further determines whether the retransmission message was previously reception failure or success, receives the previously unsuccessfully received message, and receives the previously received message. It is an object to provide a radio selective call receiver that does not receive successful messages.

[0006]

In order to solve this problem, the present invention provides a continuity of continuity every time a radio selective calling base station outputs at least a selective calling number and different data for the same selective calling number. When a certain counter value changes and past data is retransmitted, the counter information that becomes the counter value at the time of the first transmission, and when data is retransmitted, it can be judged that it is retransmission A signal for modulating and outputting the transmission information and the data for the selective calling number is received and demodulated, and when the received selective calling number and the preselected self-selecting calling number match, a display based on the data is displayed. A radio selective call receiver for performing data retrieval means for retrieving data for each content of received data, a counter value retrieved by the data retrieval means, and further And a reception error detection unit for comparing the two counter values stored in the call counter storage unit to determine whether the previous message could not be received, and a reception error detection unit. Reception error history storage means for storing a history of reception errors detected by the means, and history reception error detection means for detecting past reception errors from the reception result information indicated by the history counter stored in the reception error history storage means. ,
The re-transmission information is composed of re-transmission data which is detected from the re-transmission information and which is valid or invalid according to the result of the history reception error detection means.

As a result, the history of the reception error and the message number in which the reception error occurred can be notified to the user, and the user's request for re-transmission to the radio selective calling base station becomes possible. In addition, a re-reception permission / non-permission selection function is provided in which the re-transmission message is received if reception fails before, and is not received if succeeded.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION According to the present invention, counter information in which a continuous counter value changes every time a radio selective calling base station outputs at least a selective calling number and different data for the same selective calling number. And a signal for modulating and outputting the data for the selective calling number is received and demodulated, and based on the data when the received selective calling number and the preselected self-selecting calling number match. A radio selective call receiver for displaying, wherein data fetching means for fetching data for each content of the received data, a value of the counter fetched by the data fetching means, and a value of the counter received before that The call counter storage means for storing and the two counter values stored in the call counter storage means are compared, and the previous message cannot be received. The reception error detection means for determining whether or not the reception error detection means is provided, and the notification means for notifying the result of the reception error detection means are provided, and the reception error detection means is a counter for the received message stored in the call counter storage means. It confirms the continuity between the value and the previous counter value, and if there is no continuity, it has an action of notifying the user of the previous reception result by the notifying means.

In addition to the above-mentioned invention, the present invention further comprises a reception error history storage means for storing a history of reception errors detected by the reception error detection means, a result of the reception error detection means and the reception error history storage. The reception error detection means confirms the continuity of the counter value of the received message stored in the call counter storage means and the continuity of the previous counter value and confirms the continuity. If not, it has an action of notifying the user of the previous reception result by the notifying unit and an action of notifying the user of the contents of the reception error history storage unit by the notifying unit.

Further, according to the present invention, the radio selective calling base station is
At least the selective call number and the continuous counter value changes each time different data is output to the same selective call number, and when past data is retransmitted, the counter value at the time of the first transmission And the signal for modulating and outputting the counter information, the retransmission information that can be judged to be a retransmission when the data is retransmitted, and the data for the selective call number are received and demodulated. A wireless selective call receiver that displays based on the data when the received selective call number and a self-selected call number stored in advance match, and retrieves data for each content of the received data Data fetching means, a call counter for storing the value of the counter fetched by the data fetching means and the counter value received before that The storage means, the reception error detection means for comparing the two counter values stored in the call counter storage means to determine whether the previous message could not be received, and the history of reception errors detected by the reception error detection means. The reception error history storing means for storing, the reception error result detecting means for detecting the reception error result of the counter value stored in the reception error history storing means, and the past reception error, and the retransmission information are Retransmission detecting means for detecting that the data is retransmitted data, and when it is detected that the retransmitted data is retransmitted data, the data is validated or invalidated according to the result of the history reception error detection means, and the reception error detection means And a notification means for notifying the contents of the reception error history storage means. The reception error detection means is stored in the call counter storage means. The continuity between the stored received message counter value and the previous counter value is confirmed, and if there is no continuity, the notification means notifies the user of the previous reception result and the contents of the reception error history storage means According to the function of notifying the user by the notifying means and the content of the reception result indicated by the counter received by the reception error history storing means when the retransmission is judged by the retransmission detecting means, the retransmission message indicates that the reception failed previously. The function of the re-reception permission / inhibition selection function is obtained in which it is received if it is present and not received if it is successful.

An embodiment of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 is a block diagram showing a configuration of a radio selective call receiver according to Embodiment 1 of the present invention. FIG.
FIG. 4 is a diagram showing a simplified signal format transmitted by a radio selective calling base station according to the present embodiment. FIG. 3 is a diagram showing an example of contents of the call counter storage means upon successful reception.
In FIG. 3, E is the counter value received last time, and F
Is the received counter value. FIG. 4 is a diagram showing an example of contents when the call counter storage means fails to receive. In FIG. 4, E ′ is the previously received counter value and F ′ is the received counter value. The radio selective calling base station modulates and outputs a message block A having the selective calling number B, the counter information C and the message data D shown in FIG. 2 as one block. The counter information C is 1 every time a different message block A having the same selective call number B is output.
They are added one by one, and when the preset maximum value or more is reached, the initial value is added again.

In FIG. 1, the receiving means 1 receives a signal transmitted by a radio selective calling base station, and a message block A
The demodulation operation is performed so that the contents of can be recognized in each block. The data demodulated by the receiving unit 1 is input to the calling number collating unit 3, the message block end recognizing unit 7, and the message acquisition SW 4. The calling number collating means 3 compares and collates the selected calling number B of the demodulated data with the calling number previously stored in the calling number storage means 2, and if they match, the message acquisition SW4 is made effective (the switch is closed). The demodulated data is input to the data extracting means 5. The data fetching means 5 fetches the counter information C and the message data D of the message block A which becomes the input data, and stores the message data D in the message storage means 6. Further, the retrieved counter information C is stored in the call counter storage means 9. When the message block end recognition means 7 receives the final data of the message block A, it invalidates the message acquisition SW 4 (opens the switch).

According to the above operation, the calling number collating means 3
The message is stored in the message storage unit 6 from the time when the message acquisition SW4 is validated to the time when the message block end recognition unit 7 invalidates the message acquisition SW4. The call counter storage means 9 also stores the previously received counter information as shown in FIG. The method of storing the reception counter information in the call counter storage means 9 is such that, when the counter information C is received, the contents of the reception counter F are first copied to the previous reception counter E, and the contents of the counter information C received thereafter are received counter F. Remember. The reception error detection means 10 compares the previous reception counter E and the reception counter F of the calling counter storage means 9, and as shown in FIG. 3, the value obtained by adding 1 to the previous reception counter E and the value of the reception counter F are the same. If the reception counter E is the maximum value set in advance the previous time, if the reception counter F is the initial value, it is determined that the past reception is successful. On the other hand, as shown in FIG. 4, the previous reception counter E '
The value of the reception counter F'is different from the value obtained by adding 1 to
When the previous reception counter has the preset maximum value and the reception counter is not the initial value, it is determined that a reception error has occurred in the past, and a notification command of the reception error is output to the notification means 8.

Upon receiving the reception error notification command from the reception error detection means 10, the notification means 8 notifies the user of the reception error with a sound or the like different from the normal ringing tone. As described above, according to the present embodiment, the reception error detection means 10 confirms the continuity between the counter value of the received message stored in the call counter storage means 9 and the previous counter value, and confirms the continuity. If not, the notification means 8 can notify the user of the previous reception result.

(Second Embodiment) FIG. 5 is a block diagram showing the configuration of a radio selective call receiver according to a second embodiment of the present invention. In this embodiment, the signal format transmitted by the radio selective call base station and the operation of the call counter storage means are the same as those in the first embodiment, and will be described with reference to FIGS. 6 is a diagram showing an example of the reception error history storage means.

As shown in FIG. 2, the radio selective calling base station has a message block A in which a selective calling number B, counter information C, and message data D are integrated into one block.
Is modulated and output. The counter information C is incremented by 1 each time a different message block A having the same selective call number B is output, and has a maximum value set in advance (for example, 25).
5) When the above is reached, the addition is started from the initial value again. In FIG. 5, the receiving means 1 receives the signal transmitted by the radio selective calling base station, and performs a demodulation operation so that the contents of the message block A can be recognized by each block. The data demodulated by the receiving unit 1 is input to the calling number collating unit 3, the message block end recognizing unit 7, and the message acquisition SW 4. The calling number collating means 3 compares and collates the selected calling number B of the demodulated data with the calling number previously stored in the calling number storage means 2, and if they match, the message acquisition SW4
By enabling the, the demodulated data can be input to the data extracting means 5. Data retrieval means 5
Takes out the counter information C and the message data D of the message block A which becomes the input data, and stores the message data D in the message storage means 6. Further, the retrieved counter information C is stored in the call counter storage means 9. When the message block end recognition means 7 receives the final data of the message block A, it invalidates the message acquisition SW4.

According to the above-described operation, the message data D is stored in the message storage means 6 from the time when the message acquisition SW4 is validated by the calling number collating means 3 until the message acquisition end SW4 is invalidated by the message block end recognition means 7. To be done. The call counter storage means 9 also stores the previously received counter information as shown in FIG. The method of storing the reception counter information in the call counter storage means 9 is as follows:
First, the contents of the reception counter F are copied to the reception counter E last time, and the contents of the counter information C received thereafter are stored in the reception counter F. Reception error detection means 10
Compares the previous reception counter E and the reception counter F of the call counter storage means 9, and as shown in FIG. 3, the value obtained by adding 1 to the content of the previous reception counter E and the value of the reception counter F are the same. If the content of the reception counter E is the maximum value set in advance the previous time, if the content of the reception counter F is the initial value, it is determined that the previous reception is successful.
Further, the reception error history storage means 11 writes 1 in the reception result information H indicated by the history counter G having the same value as the received counter and stores it. On the other hand, as shown in FIG. 4, when the value obtained by adding 1 to the content of the previous reception counter E ′ is different from the value of the reception counter F ′, or when the previous reception counter E ′ is the preset maximum value, If the reception counter is not the initial value, it is determined that a reception error has occurred in the past, and the notification means 8 is informed of the reception error and the reception error history storage means 11 is provided.
The content of is also output. For example, the reception error history storage means 11
Is the content shown in FIG. 6, the counter information “2”
The notification means 8 is notified that the reception of the message "3" has failed.

As described above, according to the present embodiment, the reception error detection means 10 confirms the continuity between the counter value of the received message stored in the call counter storage means 9 and the previous counter value. If there is no continuity, notification means 8
Thus, the user can be notified of the previous reception result and the notification means 8 can be used to notify the user of the contents of the reception error history storage means 11.

(Embodiment 3) FIG. 7 is a block diagram showing the configuration of a radio selective call receiver according to Embodiment 3 of the present invention. FIG. 8 is a simplified diagram of a signal format transmitted by the radio selective calling base station according to the present embodiment.
The operations of the call counter storage means and the reception error history storage means are the same as those in the second embodiment, and will be described with reference to FIGS. 3, 4 and 6.

As shown in FIG. 8, the radio selective calling base station modulates a selective calling number J, counter information K, retransmitted information L and message data M into a message block I and outputs it. The counter information K is incremented by one each time a different message block I with the same selective call number J is output, and when the message block I exceeds a preset maximum value, the counter information K is again incremented from the initial value. When retransmitting a previously transmitted message, the counter information K becomes the counter value at the time of the first transmission, and 1 is set in the retransmission information L. In FIG. 7, the receiving means 1 receives the signal transmitted by the radio selective calling base station and performs a demodulation operation so that the contents of the message block I can be recognized by each block. The data demodulated by the receiving unit 1 is input to the calling number collating unit 3, the message block end recognizing unit 7, and the message acquisition SW 4.

The calling number collating means 3 compares and collates the selected calling number J of the demodulated data with the calling number stored in the calling number storage means 2 in advance, and if they match, the message acquisition SW 4 is made effective to thereby obtain the data. The demodulated data is input to the extracting means 5. At the same time, the demodulated data is also input to the retransmission detecting means 12. The data fetching means 5 fetches the counter information K and the message data M of the message block I which becomes the inputted data, and stores the message data M in the message storage means 6. Further, the retrieved counter information K is stored in the call counter storage means 9. When the message block end recognition means 7 receives the final data of the message block I, it invalidates the message acquisition SW4. If the retransmission information L is set to 1, the retransmission detecting means 12 determines that the retransmission data is retransmission data, and the AND circuit 14 is set to Hi.
Output gh. If the content of the reception result information H indicated by the counter, which is received by the reception error history storage unit 11, is 1, the history reception error detection unit 13 outputs a High signal to the AND circuit 14.
Send When the output of the AND circuit 14 is High, the message acquisition SW4 is invalid, and when it is Low, the message acquisition SW4 is valid.

Therefore, the history reception error detection means 13 has the contents of the reception result information H paired with the history counter G which is data indicating the reception result information H as well as the counter information K of the retransmitted message block I. Is failed (the value is 0), the valid state of the message acquisition SW 4 is held, but if it is successful (the value is 1), it is invalidated.

According to the above-mentioned operation, the message which is not retransmitted is acquired by the calling number collating means 3 by the message acquisition SW 4
The message is stored in the message storage unit 6 from the time when the message block end recognition unit 7 becomes invalid until the message acquisition SW 4 becomes invalid. On the other hand, for the retransmitted message, the message acquisition SW 4 is validated by the calling number collating means 3, and the reception result information H of the reception error history storage means 11 indicated by the counter value of the counter information K received by the history reception error detection means 13 is indicated. The message is stored in the message storage unit 6 from the time when 0, which is the data indicating the reception failure, is detected until the message acquisition end recognition unit 7 invalidates the message acquisition SW 4. Further, when the reception result information H of the reception error history storage means 11 indicated by the counter value of the counter information received by the history reception error detection means 13 detects 1 which is data indicating that the reception is successful, the message storage means 6 is detected. Get message SW before memorizing in
4 will be invalidated.

The call counter storage means 9 also stores the previously received counter information as shown in FIG. In the method of storing the reception counter information in the calling counter storage means 9, when the counter information is received, the contents of the reception counter F are first copied to the previous reception counter E, and the contents of the counter information K received thereafter are stored in the reception counter F. . The reception error detection means 10 compares the previous reception counter E and the reception counter F of the call counter storage means 9, and as shown in FIG. 3, whether the value obtained by adding 1 to the previous reception counter and the value of the reception counter F are the same. When the previous reception counter has the preset maximum value, the previous reception is determined to be successful if the reception counter is the initial value. Further, the reception error history storage means 11 stores the history counter G having the same value as the received counter.
1 is written and stored in the reception result information H indicated by.
On the other hand, as shown in FIG. 4, when the value obtained by adding 1 to the previous reception counter E'is different from the value of the reception counter F ', or when the previous reception counter is the preset maximum value, the reception counter has the initial value. If not, it is determined that a reception error has occurred in the past, and the notification command of the reception error and the contents of the reception error history storage unit 11 are also output to the notification unit 8. For example, if the content of the reception error history storage means 11 is the content shown in FIG. 6, the notification means 8 is notified that the reception of the messages of counter information “2” to “3” has failed.

As described above, according to the present embodiment, the reception error detection means 10 confirms the continuity between the counter value of the received message stored in the call counter storage means 9 and the previous counter value, If there is no continuity, notification means 8
The previous reception result can be notified to the user, the contents of the reception error history storage means 11 can be notified to the user by the notification means 8, and the retransmission detection means 12 can retransmit the data. If it is determined, the function of selecting whether or not to re-receive can be received according to the content of the reception result indicated by the counter in the reception error history storage means 11 if the re-transmission message was previously unsuccessful and not received if successful. can get.

[0026]

As described above, according to the present invention, the radio selective call receiver can determine the failure of message reception by itself and notify the user of the occurrence of the reception error when the reception error occurs. . Further, it becomes possible to notify the history of the message in which the reception error has occurred, and to allow the user to selectively receive and store the notified reception error message again.

Therefore, the possibility of missing important messages is reduced, and a highly reliable radio selective call receiver can be obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a radio selective calling receiver according to a first embodiment of the present invention.

FIG. 2 is a simplified diagram of a signal format transmitted by a radio selective calling base station according to the first embodiment.

FIG. 3 is a diagram showing an example of contents of a call counter storage means in the same embodiment.

FIG. 4 is a diagram showing an example of contents of a call counter storage means in the same embodiment.

FIG. 5 is a block diagram showing a configuration of a radio selective calling receiver according to a second embodiment of the present invention.

FIG. 6 is a diagram showing an example of contents of a reception error history storage unit in the same embodiment.

FIG. 7 is a block diagram showing a configuration of a radio selective calling receiver according to a third embodiment of the present invention.

FIG. 8 is a simplified diagram of a signal format transmitted by the radio selective calling base station according to the first embodiment.

FIG. 9 is a block diagram showing a conventional radio selective calling receiver.

FIG. 10 is a simplified diagram of a signal format transmitted by a conventional radio selective calling base station.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Receiving means 2 Call number storing means 3 Call number collating means 4 Message acquisition SW 5 Data extracting means 6 Message storing means 7 Message block end recognizing means 8 Notifying means 9 Call counter storing means 10 Reception error detecting means 11 Reception error history storing means 12 Retransmission detecting means 13 History reception error detecting means

Claims (3)

[Claims] 1. A selective call number, and at least a selective call number, counter information that changes a continuous counter value each time different data is output to the same selective call number, and the selective call number. A radio selective call that receives and demodulates a signal that modulates and outputs the data for, and performs display based on the data when the received selective call number and the pre-stored self-selective call number match. A call, which is a receiver and stores data fetching means for fetching data for each content of the received data, a value of the counter fetched by the data fetching means, and a counter value previously received The counter storage means and the two counter values stored in the call counter storage means are compared to determine whether the previous message could not be received. A radio selective calling receiver comprising: a reception error detection unit that determines the reception error; and a notification unit that notifies the result of the reception error detection unit. 2. The radio according to claim 1, further comprising: a reception error history storage unit that stores a history of reception errors detected by the reception error detection unit; and a notification unit that notifies the contents of the reception error history storage unit. Selective call receiver. 3. A continuous counter value changes every time the radio selective calling base station outputs at least the selective calling number and different data for the same selective calling number, and the past data is retransmitted. In the case of doing so, the counter information that is the counter value at the time of the first transmission, the re-transmission information that can be determined to be re-transmission when re-transmitting the data, and the data for the selective call number are A radio selective call receiver that receives and demodulates a signal to be modulated and output, and performs display based on the data when the received selective call number and a self-selected call number stored in advance match. A history reception error detection unit that detects a reception error result of the counter value stored in the reception error history storage unit and detects a past reception error; and the retransmission information is retransmitted. 3. The wireless communication system according to claim 2, further comprising: a retransmission detecting unit that detects whether the received data is retransmitted data or retransmitted data and validates or invalidates the data according to a result of the history reception error detecting unit. Selective call receiver.