JPS63281530A - Encoding device for radio call - Google Patents

Abstract

PURPOSE:To easily add a new service classification by increasing an input buffer memory and a sending awaiting buffer memory as one unit for a service classification. CONSTITUTION:Input buffer memories 24 and 24 are provided for a service classification and three types of an input buffer memory 24', sending buffer memories 22'1-22'n and sending awaiting buffer memories 23'1-23'n are constructed to be able to be increased (part surrounded with a broken line in the figure) as a unit. In short, out of an (n) number of groups, when a certain group is changed from a tone only service to a figure displaying service, or the service-in is executed for the group unused until then, these memories are increased. By such a construction, another service different in signal speed can be easily added.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an encoding device used in a radio paging system.

[Conventional technology]

Conventional wireless paging encoding devices can provide different services for each group, such as a tone-only service that sends only the calling number or a numeric display service that sends information consisting of the calling number and numbers. The configuration is as shown in Figure 1.

In other words, a selective calling signal (only the calling number for tone-only services, and calling number plus information for numeric services) input from a general subscriber telephone etc. via an incoming call reception device is
First, the group is divided into groups by the group identification unit 1, and an exit buffer memory 2 is provided for each group. ~2n or sending buffer memory 3. ~3n, if there is free space in the buffer memory corresponding to the corresponding group, the data is written there. Sending puff 77 Memory also has exit waiting puff 7
If there is no space in the 7th scale, the selective call signal is written to the input buffer memory 4 provided commonly to all groups, and is transferred when a space becomes available in the sending buffer memory or the sending buffer memory. The transmission control unit 5 reads the selective call signal from the transmission buffer memory at the transmission timing for each group according to the synchronization signal supplied from the synchronization signal generation unit 6, and encodes it using the encoding method corresponding to the service assigned to the group. Send it to the transmitter along with the synchronization signal.

An example of a signal output from the encoding device is shown in FIG. 2, in which a frame 11 is made up of n groups 12, and each group is made up of a synchronization signal 13 and a selective call signal 14.

The configuration of the selective call signal varies depending on the service, but for example, the tone-only service has the assigned group #.
1 consists of only the calling number 15, while group #n assigned to the numeric display consists of the calling number 15 and the information word 16. Here, the time length of each group is all the same.
(tl=t2=...=tn), the time length T of one frame is also the same in i.

[Problem that the invention seeks to solve]

In the radio paging system where the signal configuration is as described above,
If only the synchronization signal 13 is made common to each group, the content of the selective call signal may be different for each group (each receiver intermittently receives only the group to which its own call number belongs). It is considered that new services with different selective call signal configurations, coding systems, etc. can be easily added.

However, since the p&dose output encoding device has the above-mentioned configuration as shown in Figure 1, if you try to add a new service with a different selective call signal configuration, the input bar/7 amemory, waiting for transmission. There was a problem in that the structures of the buffer memory and the sending buffer memory had to be changed each time.

SUMMARY OF THE INVENTION In view of these conventional problems, it is an object of the present invention to provide a radio call encoding device that allows easy addition of new services with different configurations of selective call signals.

[Means for solving problems]

According to the invention, the above-mentioned object is achieved by the means specified in the claims.

That is, the main feature of the present invention is that it is possible to add two types of buffer memory as one unit for each service type: a small number of buffer memories (tomojinkapa 77 memory and a buffer memory waiting for transmission).

In the conventional device, the input cover 77 memory is divided into all groups.
In other words, the difference is that while only one service was provided in common for all service types, it is now possible to add more.

〔Example〕

FIG. 3 is a block diagram showing the configuration of the first embodiment of the present invention, in which 21 is a group identification section, 221 to 22n,
22', ~22'n are sending buffer memories, 231~2
3n, 23', ~23'n are buffer memories waiting for transmission;
Reference numerals 24 and 24' represent input buffer memories, 25 represents a transmission control section, and 26 represents a synchronization signal generation section.

The operation of each part is the same as that of conventional devices, but input buffer memories are provided for each service type, and three types of memory are used as units: input buffer memory, exit buffer memory, and sending buffer memory (in the figure). (The part surrounded by the broken line) has a structure that allows for expansion.

9. When a group among n groups changes from tone-only service to numeric display service, or when a previously unused group enters service, 1
Now, add these memories. This structure is advantageous when trying to add another service with a different signal speed.

This is because if the conventional service has a signal speed of n bits/second and the time width of one group is t seconds, then in the conventional service, n-t bits can be transmitted during one group, so each buffer memory has n bits/second. You can determine the required capacity based on -1 bit, but if a new service has a signal speed of 20 and 717 seconds, the group corresponding to this service can transmit 21-t bits per group. Therefore, if the capacity of each buffer memory is determined based on 2n-t bits, a larger capacity is required than in the conventional case.

Therefore, it is advantageous to have a structure in which each buffer memory can be expanded to accommodate services.

FIG. 4 is a block diagram showing the configuration of a second embodiment of the present invention, in which 31 is a group identification section, 32, -32n are sending buffer memories, 331 to 33n, 33', to 33'
34 and 34' are input puff 77 memories, 35 is a transmission control section, and 36 is a synchronization signal generation section.

The operation of each part is the same as that of conventional devices, but an input puff 77 memory is provided for each service type, and two types of memory, input buffer memory and exit waiting buffer memory, are used as units (encircled by broken lines). Part) The configuration is expandable.

This configuration is advantageous when adding a new service in which the number of bits of the calling number and the number of bits of information sent following the calling number are different.

This is because the conventional configuration has only one input buffer memory, so it is necessary to mix and store selective call signals with different call numbers and information bit numbers, and each selective call signal The length of the calling number and the length of the information should be assigned and stored, or the memory for the calling number *m should be set in advance according to the service with the longest calling number among all services. It is necessary to set the information memory capacity according to the service with the longest information length, and to leave the excess memory blank if the entire capacity is not used.

However, the former uses extra memory and complicates write and read operations. Furthermore, in the latter case, filling in blanks is a waste of memory, and it is difficult to provide a new service that transmits a call number or information that is shorter than originally planned.

In contrast, according to the present invention, a 7T input memory can be provided for each service type or for each service with the same calling number or suspicious information, which is advantageous because there is no waste or complexity that occurs in conventional devices. be.

〔Effect of the invention〕

As described above, according to the present invention, since the configuration is such that the input buffer memory can be expanded, there is an advantage that new service types can be easily added.

[Brief explanation of drawings]

FIG. 1 is a 7072 diagram showing an example of the configuration of a conventional radio paging encoding device, FIG. 2 is a diagram showing an example of a selective paging signal, and FIG. 3 is a diagram showing an example of a selective paging signal.
The figure is a block diagram showing the configuration of the first embodiment of the invention, and FIG. 4 is a block diagram showing the configuration of the second embodiment of the invention. 1...Group identification section, 21~2n...
... Sending buffer memory, 31 to 3n ...
・・Buffer memory waiting for sending out, 4 ・・・・・・
Input power supply 7 memory, 5... Output control section 1, 6... Synchronization signal generation section,
11... Frame, 12... Group, 13... Synchronization (, No. 1, 14
...Selective calling signal, 15 ... Calling number, 16 ... Information word,
21...Group identification section, 22. ~2
2n. 22'1 to 22'n... Sending buffer memory, 23, 23+-23n*23'+ to 23'
n -- Sending buffer memory, 24...
・・・Input puff 7 memory, 25 ・・・・・・
Sending control section 1, 26...Synchronization signal generation section,
31...Group identification section, 32. ~3
2n... Sending buffer memory, 33
1 to 33n, 33'+ to 33'n... Send-out puff 7 memory, 34.34'... Input cap 7T memory, 25... Send-out control section,
26... Synchronization signal generation department agent Patent attorney Takashi Honma Figure 1 22゜Figure 3

Claims (1)

[Claims] a group identification unit for identifying a group to which an input signal belongs; a buffer memory provided corresponding to each group and temporarily holding information for identifying a receiver or the information and message information to be transmitted to the receiver; and the buffer. An input buffer memory commonly used by each group for temporarily holding newly arrived information when the memory is in use and cannot store the newly arrived information, a synchronization signal generator, and a signal generator. and a transmission control unit for controlling transmission of a signal, and a signal frame is configured by a set of synchronization signals including a group designation signal specific to the group and a plurality of selective call signals for receivers belonging to the group. In an encoding device used in a radio paging system that performs selective calling of receivers by transmitting information, information that is provided corresponding to each group and identifies the receiver, or information and message information to be transmitted to the receiver. When the buffer memory is in use and cannot store newly arrived information, an input commonly used by each group to temporarily store the information. 1. An encoding device for radio calling, characterized in that a means is provided for adding a buffer memory circuit to a series of buffer memory circuits each consisting of a buffer memory.