KR100191926B1 - Wide-area pager and control method of its multi-capcode system - Google Patents

Abstract

The present invention relates to a multi-cap code wide area pager for identifying the same cap code in a wide area wireless pager, wherein the wide area pager of the present invention includes a special code for identifying a subscriber when the cap code is the same, A paging signal receiving means for receiving a paging signal included in a first message code of the paging signal receiving means; First storing means for storing a cap code of the wide area pager; Decoding means for receiving a cap code stored in the first storage means and decoding the received wireless paging signal to generate a message signal; Second storing means for storing a special code of the wide area pager; And a decoding unit that receives a message signal and compares a special code previously input into the special code storage unit and a message corresponding to a special code number out of the received message with a special code, As an actual message and processing the received message as an actual message.

Description

Multicap coded wide area pager and wireless call reception control method

FIG. 1 is a schematic diagram of a multi-capsule coded wide area pager according to the present invention; FIG.

FIG. 2 is a processing flowchart of a method for controlling reception of a wide area wireless call using a multi-cap coded system according to the present invention.

DESCRIPTION OF THE REFERENCE NUMERALS

9: Receiver 10: Decoder

11: Frequency adjustment unit 12: Central control unit

13: display unit (LCD) 14:

15: key input unit 16: memory unit

17: Special code storage unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pager for a wide area paging service and a method for controlling reception of a wide area paging signal.

The first wireless paging service provided a call service only within the area where the subscriber paid a certain fee to the communication service company and, in return, received a subscriber unique (ID) number from the communication service company. As a result, there has been a restriction that the wireless paging service is not provided when the wireless paging service subscriber moves to another area (business trip, trip, etc.) other than the area initially registered. Therefore, in order to receive the wireless paging service in other areas other than the area where the service registration was first performed, a new service registration (ID number assignment) was required in the other area and a new wireless pager having a service channel in the area was purchased and used. As a result, there is a problem that it is inconvenient to use a subscriber, and a double or triple expense is required for purchasing a separate pager, and there is a problem that the mobility of the paging service is lowered. Therefore, A wide area wireless paging service capable of providing a wireless paging service and a wide area wireless pager for a wide area wireless paging service capable of accommodating such wide area wireless paging service with one wireless pager regardless of the movement of the area have been provided.

However, in the conventional wide area pager, a plurality of wireless channels are used to accommodate a plurality of subscribers in a metropolitan area, so that subscribers using the same cap code are generated in one area, , The cap code is duplicated when moving to another area. That is, the maximum number of the cap code can now be accommodated in a single radio frequency (RF) channels in a POCSAG signal is a sequence of data that is used in the wide area radio paging system is a cap code is 21 bits, so ²²¹ is about 2,097,152 gaji . However, in the method used in Korea, since the upper two digits (decimal number) of the cap code are written as the value representing the region, the number of cap codes that can be used in one wireless channel in each region is only about 100,000. Also, because of the wide area, the number of cap codes that can be used in one wireless channel in a certain area is limited. For example, since the number of wireless channels in the Seoul area is large, the cap codes accommodated in the respective wireless channels may be the same, and the same cap code can not be simultaneously accommodated in the service wireless channel of the other area. In other words, a large number of wireless channels are required in a metropolitan area such as Seoul, so that there are people having the same cap code in this area. In this case, users having the same cap code have a relatively large number of wireless channels There is a problem that cap codes are overlapped when moving between regions in small local cities.

SUMMARY OF THE INVENTION It is therefore a primary object of the present invention to solve the above problems, and it is an object of the present invention to provide a broadband wireless pager capable of accommodating users having the same cap code in one region at a time by using a multi- And to provide a control method.

A wide area pager according to the present invention is a wide area pager of a multi-cap code type for identifying the same cap code in a wide area pager, and the wide area pager of the present invention is a special area for identifying a subscriber A paging signal receiving means for receiving a paging signal including a code in a first message code after a cap code; First storing means for storing a cap code of the wide area pager; Decoding means for receiving a cap code stored in the first storage means and decoding the received wireless paging signal to generate a message signal; Second storing means for storing a special code of the wide area pager; A message signal is inputted from the decoding means to compare a special code inputted from the special code storage unit and a message corresponding to a special code number among the received messages to a special code to judge whether they match or not. And means for accepting the message as an actual message and processing the message as an actual message.

A wireless signal receiving method of a wide area wireless pager according to the present invention is a method of receiving a wireless paging service by identifying a same cap code in a wide area wireless pager, wherein a special code for identifying a subscriber is encapsulated Receiving a radio paging signal included in a next first message code; Receiving and decoding a wireless paging signal corresponding to a cap code of the wide area wireless pager, and generating a message signal; And receives the message signal to compare the special code stored in the wide area wireless pager with the special code to compare the received special code with the special code. If they match, the special code next message is recognized as an actual message And processing the message as an actual message.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram of a multi-capsule coded wide area pager according to the present invention. Referring to the drawings, the structure and operation of a pager according to an embodiment of the present invention will be described in detail.

The multi-capsule coded wide area pager according to the present invention includes a receiver 9 for receiving a POCSAG signal as a paging signal, a decoder 10 for decoding the received signal, and a control signal of a central control unit 12 A frequency control unit 11 for generating a specific frequency according to a frequency selection signal to receive a desired frequency in a receiving unit, a central control unit 12 for performing a wide- A display unit 13 for receiving the display control data provided by the central control unit 12 upon receiving the wireless paging information and displaying the message, a central control unit 12 for informing the called party of the reception of the wireless paging information, A drive unit 14 for driving visible and audible alarms in accordance with a drive control signal from the user A key operation unit 15 as an operation command input unit, a function of storing various information set in advance when manufacturing the wideband pager of the present invention, and providing the information to the central control unit 12, The information includes a memory unit 16 for storing channel information for each region, an ID code for each region, subscriber ID information, and the like, and a special code storage unit 17 for storing a special code.

The special code storage unit 17 according to the present invention stores special codes for identifying subscribers having the same cap code. In the embodiment of the present invention, the wireless paging signal received by the receiver 9 is assumed to be a POCSAG signal and a special code is described.

The POCSAG signal consists of a plurality of consecutive arrangements followed by a preamble and a preamble, each of which is composed of a 32-bit synchronous code word and eight frames each of which is 64 bits, and each frame has a 32-bit address code Two code words are included in a word, a 32-bit message code word, or a 32-bit idle code word. The address code word is composed of a flag of 1 bit, address data of 18 bits, function code of 2 bits, error check data of 10 bits, and parity bit of 1 bit. The message code word includes a flag of 1 bit, , 10-bit error check data, and 1-bit parity bit. The idle code word is composed of a 1-bit flag, 20-bit idle data, 10-bit error check data, and 1-bit parity bit. In the present invention, the special code is included in the message data position of the message code word located immediately after the address code word, and the special code is composed of the subscription area code (or home area code) and the wireless channel code. The subscription area code refers to a code indicating an area to which the subscriber first subscribes, and refers to a code of a radio channel of the area in which the radio channel code is currently used. For example, if the subscription area code is a code representing Seoul and the wireless channel code is 30, the special code is indicated as (Seoul + 30). In the wide area wireless paging system's wide area wireless paging system, when a special code is transmitted together with a cap code in the manner described above, the subscriber can be identified with this special code even if at least two subscribers having the same cap code are present at the same time in another area.

Hereinafter, a method for controlling reception of a paging signal of a wide area pager of a multi-cap coded system according to the present invention will be described in detail with reference to FIG.

When the wide area pager is initialized (S200), the central controller 12 determines whether the current mode is the wide area service mode (S202). If the wide area pager is initialized, the central controller 12 proceeds to the message reception step (S216) And performs the processes (S204 to 5214). This area searching process is a normal process performed by the wide area pager. The area searching process is performed by a regional channel previously stored in the memory unit 16 based on a predetermined order as shown in steps S204 to S214 Detects the area information in the POCSAG signal inputted through the receiver 9 while recognizing the area where the current subscriber is located and controls the radio paging information in the area to be received. In step S211 and step S214, the frequency adjuster 11 adjusts the frequency so that the receiver 9 is ready to receive a specific frequency Complete.

On the other hand, when the POCSAG signal is inputted through the receiving unit 9 by this operation, the decoder 10 detects the sync code in the frame of the POCSAG signal. When the sync code is detected, the decoder 10 detects the address and judges whether or not it is the same as the magnetic address. The decoder 11 informs the central controller 12 of the address comparison result and stores the next message information in its own buffer so that the central controller 12 reads the buffer information when the buffer is full, 12 to process the received message.

The central control unit 12 judges whether or not a message is received from the decoder 10 in step S216. If the message is received, the central control unit 12 transmits a special code, which is previously input to the special code storage unit 17, (S218). If they coincide with each other, it recognizes the following message as an actual message and displays it as an actual message (S220). Then, the driving unit 14 is operated (S222) (Step S224) and proceeds to a message reception waiting state (step S216). On the other hand, if there is no special code in the message code in step S218, the message reception is canceled and the flow advances to step S216. If the message is not received in step S216, the switching mode determination step S228, the range determination step S230, the key operation determination step S232, and the key operation mode operation (S234), detailed description thereof is omitted here.

As described above, according to the present invention, even if a subscriber having the same cap code occurring in a metropolitan area having a plurality of radio channels moves to another area having a relatively small number of radio channels by using the multi-cap code system, Thereby making it possible to distinguish subscribers having the same cap code.

Claims (4)

A paging signal receiving means (9) for receiving a paging signal including a special code for identifying a subscriber in a first message code after a cap code, when the cap code is the same, ; First storage means (16) for storing a cap code of said wide area wireless pager; Decoding means (10) for receiving a cap code stored in the first storage means (16) and decoding the received wireless paging signal and generating a message signal; Second storing means (17) for storing a special code of said wide area wireless pager; And a message signal from the decoding means to compare the special code entered in the special code storage unit 17 with the special code number of the received message to determine whether they match with the special code, And a means (12) for recognizing the code following message as an actual message and processing the message as an actual message. 2. The wide area wireless pager of claim 1, wherein the special code comprises a subscription area code and a wireless channel code. A method of receiving a wireless paging service by identifying the same cap code in a wide area wireless pager, the method comprising: receiving a wireless paging signal including a special code for identifying a subscriber in the first message code after the cap code if the cap code is the same step; Receiving and decoding a wireless paging signal corresponding to a cap code of the wide area wireless pager, and generating a message signal; And receiving the message signal to compare the special code stored in the wide area wireless pager with the special code to compare the received special code with a special code. If the special code is matched, a special code following message is recognized as an actual message And processing the received paging signal as an actual message. 3. The method of claim 2, wherein the special code comprises a subscription area code and a wireless channel code.