JP2526793B2 - Paging system controller - Google Patents

Abstract

PURPOSE:To heighten the working ratio of a batch by re-arranging a registered call when the paging call signal of a call inputted at random in a queue buffer for POCSAG signal in a paging system controller comprised of plural batches and in which each batch emplys the POCSAG signal comprised of plural groups. CONSTITUTION:When the new call of the group 2 is registered as shown in (b) in a state where the paging call signals relating to accepted calls (1)-(6) are registered on the batches (n) and (N+1) of the POCSAG signals in the queue buffer as shown in (c), free space of 1CW exists at the position A of the group 2 of the batch (n), however, since the size of the new call shows 4CW, the overwrite of the registered call (2) is performed if it is registered as it is. In such a case, the group G3 of the batch (n+1) in which the registered call (2) can be housed without performing the overwrite of another call is retrieved, and it is re-arranged at that position as shown in (d), and the new call is housed in the free part generated by shift as shown in (e).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paging system control device, and more particularly, to queuing (Quu) for collecting randomly input data relating to a call into a predetermined transmission signal sequence.
and a paging system control device that performs euing) processing.

[0002]

2. Description of the Related Art As a conventional paging system, a PO
There is one that uses an international standard signaling system known as a CSAG signal (CCIR RECOMMENDATION 584-1 (1
982-1986), STANDARD CODES AND FORMATS FOR INTERNATI
ONAL REDIO PAGING).

The transmission signal of this POCSAG signal system is
As shown in FIG. 4, it is composed of a plurality of batches (BATCH), and each batch is divided into 8 groups (GROUP) corresponding to the lower 3 bits of the paging identification signal, and each group further includes 2 codewords (hereinafter, Codeword is C
W).

A call input to the paging system controller is converted into a paging call signal. The paging call signal consists of an address CW (Address CW) for 1 CW when there is no character display, and an address CW for 1 CW when there is a character display and one or more message CWs corresponding to the length of the display message. (M
message CW) and address C
W is calling the pager address (Page Add
res) are arranged so as to be accommodated in a group corresponding to the lower 3 bits. At this time, the message CW is the CW for the length of the message from the CW next to the address CW.
However, if necessary, they are placed across subsequent groups.

In order to send out such a POCSAG signal, a conventional paging system control device is shown in FIG.
A queue buffer (Queue) configured as shown in FIG.
Buffer), paging call signals related to calls that are randomly input are accumulated in the queue buffer in the order in which they arrive, and are sequentially transmitted in sequence. In addition, in FIG.
Batch n + 1 is the nth in the queue buffer,
The storage area corresponding to the (n + 1) th batch is shown, G0 to
G7 is a storage area corresponding to each group in each batch and has a storage capacity of 2 CW.

[0006]

The above-mentioned conventional paging system controller merely queues the paging call signals related to the input call to the queue buffer in the order in which they arrive, so that, for example, in the queue buffer shown in FIG. When a paging call signal is accumulated as shown in FIG. 3 (c) and a new call for the group 2 as shown in FIG. 3 (b) is to be queued, there is a space in the queue buffer. Nevertheless, the call is rejected because the free space of the required length cannot be secured. As a result, there is a problem that the usage rate of the batch in the transmission signal sequence is low and valuable radio resources cannot be effectively used.

The present invention solves the above-mentioned conventional problems, and an object thereof is to reduce the vacant area of the batch as much as possible and increase the usage rate of the batch.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention temporarily provides a transmission signal sequence consisting of a plurality of batches, each batch being associated with a pager identification number. In a paging system control device having a queue buffer for accumulating, accommodating a paging call signal related to a randomly input call in the queue buffer, and sending out collectively at a later time, paging call of a call already accommodated in the queue buffer A relocation unit is provided for accommodating a paging call signal relating to a new call in the queue buffer while relocating signals to other batches as needed.

[0009]

According to the present invention, the rearrangement unit rearranges the paging call signal of the call already accommodated in the queue buffer into another batch as necessary, while the paging call signal relating to the new call is transmitted. Store in queue buffer.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings.

Referring to FIG. 1, a paging system control unit PGC according to an embodiment of the present invention comprises a queue buffer 1, a transmission buffer 2, a queuing unit 3, an encoding unit 4, and a transmission having a configuration as shown in FIG. It has a unit 5, a rearrangement unit 6, and a central control unit 7.

Call data 8 randomly generated from the outside
Is input to the queuing unit 3, is converted into the paging call signal format format under the control of the central control unit 7, and is input to the queue buffer 1 that stores the call data converted into the paging call signal format. At this time, the central control unit 7 relocates the data of the call (already received call) already stored in the queue buffer 1 as necessary in order to increase the usage rate of the batch in the transmission signal sequence. Meanwhile, the newly generated call data 8 is accommodated in the queue buffer 1 through the rearrangement unit 6 which accommodates the data related to the new call in the queue buffer 1.

The paging call signal of the queue buffer 1 is transferred to the transmission buffer 2 at a certain time, and after the paging call signal set in the transmission buffer 2 is added with BCH / parity by the encoding unit 4,
It is output by the transmission unit 5 according to a certain cycle under the control of the central control unit 7.

Next, the operation of this embodiment will be described with a specific example centering on the rearrangement by the rearrangement unit 6.

The central control unit 7 activates the rearrangement unit 6 when accommodating a paging call signal for a new call in the queue buffer 1.

When the rearrangement section 6 is activated, it starts the processing shown in FIG.

First, as shown in step 10, the batch number pointer is set to zero.

Next, as shown in step 11, in the batch pointed to by the batch number pointer, 1 CW is placed at the location of the group i (i = 0 to 7) to which the call to be newly registered belongs.
Search to see if there is a free space.

If it is found in the search in step 11 that there is no vacant space, as shown in step 19, it is checked whether there is a batch to be searched next. If there is no batch to be searched next, a rearrangement process is performed. finish. At this time, the central control unit 7 refuses to accept this call. On the other hand, when there is a batch to be searched next, as shown in step 18, the batch number pointer is moved to the next batch,
Return to step 11.

When a vacancy of 1 CW is found at the location of the corresponding group in step 11, if a new paging call signal is registered from the vacant portion as shown in step 12, some overwritten calls occur. To find out.

If the number of calls to be overwritten is 0, as shown in step 17, the paging call signal for a new call is set in the empty space found in step 11. Therefore, for example, in the state where all areas of batch n and n + 1 shown in FIG.
If a call requiring CW, a call requiring 5 CW, a call requiring 3 CW, a call requiring 3 CW, and a call requiring 6 CW occur in that order, any of the calls 1 to 3 are overwritten in step 12. It is determined that the number of calls to be made is 0, and the paging call signal for each call is stored in the queue buffer 1 in that order as shown in FIG.

On the other hand, when it is determined in step 12 that the number of calls to be overwritten is two or more, the process proceeds to step 19 and the above-mentioned processing is repeated.

If it is determined in step 12 that the number of calls to be overwritten is 1, it is checked whether the batch number pointer points to the final batch, as shown in step 13, and the batch number pointer points to the final batch. If so, the rearrangement process ends. At this time, the central control unit 7 refuses to accept this call.

On the other hand, if the batch number pointer does not point to the final batch, the relocation of one call determined to be overwritten in step 12 (hereinafter referred to as a relocation target call) is performed. To try, advance the batch number pointer to the next batch, as shown in step 14. Therefore, for example, in the case of registering a new call (the size required to store the paging call signal is 4 CW) belonging to the group 2 as shown in FIG. , Batch number
In step 11 where the pointer is pointing to batch n, it is confirmed that there is 1 CW worth of space at the position A in FIG. 3C, and the call that is overwritten in step 12 is one call Since it is determined that the current batch n is not the final batch in step S13, the process proceeds to step 14 and the batch number pointer is used to try the relocation as a call to be relocated. Is changed to point to batch n + 1.

Next, as shown in step 15, in the batch n + 1 pointed to by the batch number pointer, a space for writing the paging call signal of the relocation target call is written in the place of the group to which the relocation target call is assigned. Search for In the case of FIG. 3C, the size required for the call to be rearranged is 3CW, and the location of group 3 of batch n + 1 includes 3C including the location of empty group 4.
Since there is a vacant space for W, the vacant space becomes available by this step 15.

Therefore, the process proceeds to step 16, and FIG.
As shown in FIG. 11, the rearrangement target called call is set, that is, rearranged, in the empty place found in step 15. And
Proceeding to step 17, as shown in FIG. 3 (e), a paging call signal for a new call is set in the empty place searched in step 11.

On the other hand, if there is no vacancy as a result of the search in step 15, it is checked whether there is a batch to be searched as shown in step 21, and if there is no batch to be searched next, the rearrangement process is ended. At this time, the central control unit 1 refuses to accept this call. If there is a batch to be searched next, the batch number pointer is moved to the next batch as shown in step 20, and the process returns to step 15.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various other additions and modifications can be made. For example, in the above embodiment, the number of existing calls to be rearranged is limited to one at a time in order to avoid complication of the processing, but if a new call is registered, the number of existing calls becomes two.
When the above-mentioned already-called is overwritten, it is possible to try to rearrange the two or more already-called.

Further, when a batch having a minimum unit (1 CW) of vacancy in the group for accommodating a new call is found, the rearrangement is attempted as necessary, but the group for accommodating the new call Search from all batches for batches with new call size (all sizes including messages),
When such a batch is not found, the batch for accommodating a new call may be re-searched for a batch having a minimum unit vacancy and the rearrangement may be tried.

[0030]

As described above, according to the present invention, the paging call for a new call can be performed while the paging call signal of the call already accommodated in the queue buffer is rearranged to another batch as needed. Since the signal is stored in the queue buffer, the empty area of the batch is reduced as much as possible,
Higher batch utilization. This makes it possible to provide an economical paging system that effectively uses valuable wireless resources.

[Brief description of drawings]

FIG. 1 is a block diagram of a main part of a paging system controller according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating a processing example of a rearrangement unit.

FIG. 3 is a diagram showing a configuration of a queue buffer, an example of a new call, an example of a storage state of the queue buffer, an example of rearranging an already called call and an example of storing a new call after rearrangement.

FIG. 4 is a diagram showing a format of a POCSAG signal.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Queue buffer 2 ... Transmission buffer 3 ... Queuing unit 4 ... Encoding unit 5 ... Transmission unit 6 ... Rearrangement unit 7 ... Central control unit 8 ... Call data

Claims (3)

(57) [Claims] 1. Paging relating to a randomly input call, comprising a queue buffer for temporarily storing a transmission signal sequence composed of a plurality of batches, each batch being associated with a pager identification number. In a paging system control device that stores a call signal in the queue buffer and sends the call signals collectively at a later time, while performing rearrangement of the paging call signal of the call already stored in the queue buffer into another batch as necessary. A paging system control device comprising a rearrangement unit for accommodating a paging call signal relating to a new call in the queue buffer. 2. The rearrangement unit searches a vacant state of a group in a batch accommodating a new call, and the first searching unit searches for at least a minimum unit vacancy. Detecting means for detecting an existing call to be overwritten when accommodating the paging call signal of the new call from the empty part of the group in the batch, and the existing means to be overwritten by the detecting means, Second retrieval means for retrieving from another batch a group capable of accommodating an already called paging call signal to be overwritten without overwriting another already called paging call signal, and the second retrieval means. Moving means for moving the overwritten paging call signal detected by the detecting means to another batch group, and the existing means for overwriting by the detecting means. When it is detected that there is no paging call signal of the new call from the empty part of the batch group searched by the first searching means, there is an existing call which is overwritten by the detecting means. 2. The paging system control apparatus according to claim 1, further comprising: an accommodating means for accommodating a paging call signal of the new call to a group which has become empty due to the movement by the moving means when it is detected. 3. The paging system control device according to claim 2, wherein the number of existing calls to be rearranged is limited to one at a time.