KR100298173B1 - Apparatus and method for receiving multi-channel paging - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a multi-channel radio call receiving apparatus and method thereof.

2. The technical problem to be solved by the invention

In the present invention, a plurality of RF signal processing units and a demodulator receive a plurality of RF channels in common in a radio call broadcasting system to separate only a desired RF channel among a plurality of RF channels, thereby increasing the efficiency of a multi-channel radio call reception. To provide a device and a method thereof.

3. Summary of Solution to Invention

The present invention provides a multi-channel radio call reception method applied to a multi-channel radio call reception apparatus, comprising: a first step of distinguishing broadcast information and individual call information from a base station and transmitting them on different radio frequency channels; When the area of the wireless calling terminal is moved, the reference frequency of the corresponding area is found using the first radio frequency signal processing unit and the demodulator of the wireless calling terminal, and is tuned to the reference channel having the largest wave strength, and the wide area service code of the reference channel is decoded. A second step of checking a corresponding area and receiving individual call information by tuning to an individual call radio frequency channel in a selected area; And a third step of receiving broadcast information by tuning to a broadcast radio frequency channel of a corresponding region using a second radio frequency signal processor and a demodulator.

4. Important uses of the invention

The present invention is used for radio calling service.

Description

Multi-channel radio call receiving apparatus and method thereof {APPARATUS AND METHOD FOR RECEIVING MULTI-CHANNEL PAGING}

The present invention relates to a multi-channel radio call reception apparatus and method for separating and receiving a plurality of channels in order to efficiently use a radio frequency (RF) channel in a radio call broadcasting system to increase the efficiency of frequency resources. .

In general, as the wireless call service develops, text and multimedia broadcasting services using the wireless call network have been actively progressed.

In the past, such a broadcast service was provided to all the pagers equally. In particular, the wireless pager not only broadcasts the information to the pager but also the individual information of each pager (ie, the e-mail data, the user's call data, and the user). Data for control, etc.) are also transmitted.

1 is a configuration diagram of a conventional radio call receiver, in which "11" is a radio frequency (RF) signal processing unit, "12" is a central processing unit (CPU), and "13" is a demodulator ( Decoder), "14" represents a liquid crystal display (LCD), "15" represents a memory, "16" represents a speaker, "17" represents a vibration motor, and "18" represents a key input device, respectively.

The conventional radio call receiver includes an RF signal processing unit 11 for receiving and processing radio call radio waves through an antenna, a demodulator 13 for analyzing and processing an address and data from the received radio call data, and a central processing unit (CPU) ( 12), the memory 15 for storing the radio call data, the display device 14 showing the received data to the user, the speaker 16 and the vibration motor 17 to inform the user when the radio call signal is received, the user And a key input device 18 for inputting a desired key.

Since the conventional radio call receiver as described above includes one RF signal processor 11 and a demodulator 13, the broadcast information and the user's information on the RF channel when receiving the broadcast service using the radio call receiver. Only one RF channel with individual information was received.

Therefore, conventionally, when performing a broadcast service, the amount of data of the RF channel transmitting broadcast data is limited due to the user's individual information. In particular, this problem is more serious when there are many users of the broadcast service.

Therefore, as the number of users of broadcast services increases, the number of broadcast RF channels has to be used, and each broadcast RF channel has a problem of causing waste of RF channel resources by recording the contents of the same broadcast data.

The present invention has been proposed to solve the above problems, by receiving a plurality of RF signals in common with a plurality of RF signal processing unit and a demodulator in a radio call broadcasting system, by separating only the desired RF channel of the plurality of RF channels, An object of the present invention is to provide a multi-channel radio call receiving apparatus and method thereof for improving the efficiency of frequency resources.

1 is a block diagram of a conventional radio call receiver.

2 is a diagram illustrating a configuration of a radio call broadcasting system to which the present invention is applied.

Figure 3 is a configuration diagram of an embodiment of a multi-channel radio call receiving apparatus according to the present invention.

4 is a flowchart illustrating an embodiment of a multi-channel receiving method according to the present invention.

5 is a flowchart of another embodiment of a multi-channel receiving method according to the present invention;

* Explanation of symbols for the main parts of the drawings

21: Information Provider (IP) 22: Public Switched Telephone Network (PSTN)

23: mobile phone network 24: Internet network

25: wireless call network 30: multi-channel wireless call receiving device

In order to achieve the above object, the present invention provides a plurality of downlinks for down-converting only a radio frequency channel suitable for a reference frequency band among a plurality of radio frequency channels received from the outside in a multi-channel radio call receiving apparatus. Conversion means; A plurality of reference frequency supply means for supplying a plurality of reference frequencies to the plurality of downconverting means, respectively, according to the frequency control signal of the control means; A plurality of demodulation means for demodulating baseband signals transmitted from said plurality of downconversion means; The control means for receiving and processing output signals of the plurality of demodulation means and providing the frequency control signal for controlling the plurality of reference frequency supply means; Display means for displaying, to a user, radio call-incoming data processed by the control means; Driving means for driving the display means; And a notification means for informing the user whether or not the radio call incoming data has been received.

In addition, the present invention provides a multi-channel radio call reception method applied to a multi-channel radio call reception apparatus, comprising: a first step of distinguishing broadcast information and individual call information from a base station and transmitting them on different radio frequency channels; When the area of the wireless calling terminal is moved, the reference frequency of the corresponding area is found using the first radio frequency signal processing unit and the demodulator of the wireless calling terminal, and is tuned to the reference channel having the largest wave strength, and the wide area service code of the reference channel is decoded. A second step of checking a corresponding area and receiving individual call information by tuning to an individual call radio frequency channel in a selected area; And a third step of receiving broadcast information by tuning to a broadcast radio frequency channel of a corresponding region by using a second radio frequency signal processor and a demodulator.

The present invention is for the wireless call provider to efficiently use the RF channel in the wireless call broadcast service.

To this end, the radio call receiver of the present invention has two RF signal processing units for receiving and processing radio call radio waves and two demodulators for analyzing and processing addresses and data in radio call reception data. One RF signal processor and demodulator receive different RF channels. One RF signal processor and demodulator receives a broadcast RF channel that is jointly received on all pagers, and another RF signal processor and demodulator receives RF channels that are individually transmitted to a pager. Therefore, in the present invention, it is possible to simultaneously receive broadcast information and data individually transmitted to the wireless calling subscriber.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a diagram illustrating a configuration of a radio call broadcasting system to which the present invention is applied and shows a configuration of a radio call broadcasting service using the radio call network 25.

The wireless call broadcasting system to which the present invention is applied includes an information provider (IP) 21 for providing broadcast information, a public switched telephone network (PSTN) 22 for transmitting individual call data, and a mobile phone. A mobile telephone network 23 for providing a service, an internet network 24 for providing an Internet service, an exchanger 251 for receiving broadcast information and individual call data, and a base station for receiving radio call radio waves by receiving information from the exchange 251. And a multi-channel radio call reception device 30 for wirelessly receiving broadcast information and individual call data.

The exchange 251 distinguishes the broadcast information and the individual call data and transmits them to the base station 252 by different cap codes, and distinguishes the broadcast information and the individual call data and uses multi-channel radio call using different RF channels. It transmits to the receiving device 30.

The multi-channel radio call reception device 30 simultaneously receives two RF channels and demodulates broadcast information and individual call data. Here, the cap codes used in the two RF channels are different from each other.

3 is a configuration diagram of an apparatus for receiving a multi-channel radio call in accordance with an embodiment of the present invention, in which "31, 32" denotes a first and second radio frequency (RF) signal processing unit, and "33, 34" denotes a first And a second demodulator (Decoder), "35" is a central processing unit (CPU), "36 and 37" are first and second phase locked loops (PLL) and "38" is a display device (LCD). ) 39, "39" represents a display device (LCD), "40" represents a speaker, and "41" represents a vibration motor, respectively.

A multi-channel radio call receiving apparatus according to the present invention is a radio call receiving apparatus that receives a plurality of radio frequency channels from the outside and controls the power devices 39 to 41. Among the plurality of radio frequency channels received from an antenna, First and second radio frequency signal processing units 31 and 32 for down-converting only a radio frequency channel corresponding to the frequency band into a baseband signal and a plurality of reference frequencies, respectively, according to the frequency control signal. Demodulating the first and second phase locked loops 36 and 37 for supplying the frequency signal processing units 31 and 32 and the baseband signals transmitted from the first and second radio frequency signal processing units 31 and 32. First and second demodulators 33 and 34 and output signals of the first and second demodulators 33 and 34 to control the power devices 39 to 41, and to control the first and second phase locked loops. To provide a frequency control signal for controlling (36,37) A central processing unit 35 is included.

The first and second radio frequency signal processing units 31 and 32 may respectively include radio frequency amplifiers 311 and 321 for amplifying a plurality of radio frequency channels, and a plurality of radio frequency channels transmitted from the radio frequency amplifiers 311 and 321, respectively. , An intermediate frequency amplifier for amplifying an output signal (ie, an intermediate frequency) of the first frequency mixers 312 and 322 for down-converting only the radio frequency channels corresponding to the reference frequency band to the intermediate frequencies; 313 and 323, and second frequency mixers 314 and 324 for down converting the output signals of the intermediate frequency amplifiers 313 and 323 into baseband signals according to the reference frequency.

The power unit includes a display device 39 for showing the received data to the user, a display device driver 38 for driving the display device 39, a speaker 40 for informing the user of the wireless call reception, and vibration. The motor 41 is provided.

The phase synchronization loops 36 and 37 supply the reference frequency of the individual calling radio frequency channel to the first radio frequency signal processor 31 and supply the reference frequency of the broadcasting information radio frequency channel to the second radio frequency signal processor 32. Supply. That is, the radio pager stores the broadcast information radio frequency channel frequency and the individual call information radio frequency channel frequency for each region, so that the reference synchronization information may be provided to the phase synchronization loops 36 and 37.

Since the multi-channel radio call receiving apparatus according to the present invention as described above is merely applied to the example of a broadcast service in a radio call network, it is obvious that the apparatus can be applied to other services requiring simultaneous reception of a plurality of radio frequency channels. In addition, the present invention can be applied to a terminal of a digital broadcasting service such as a radio data system (RDS) and a data radio channel (DARC).

4 is a flowchart illustrating an embodiment of a method for receiving a multi-channel radio call according to the present invention, wherein a region of a cap code method is selected when the multi-channel radio call reception apparatus (see FIG. 3) is applied to a wide area service. The procedure for selecting a radio frequency channel is shown.

First, when the multi-channel radio call receiving apparatus moves to an area, the radio frequency is found by using a first radio frequency signal processor 31 and a first demodulator 33 to find a reference frequency of a corresponding area designated by the radio call provider for each area. Tunes to the largest reference channel (401). This is to find a service channel.

Here, when the power is turned on or the service area is changed, the service channel is scanned according to the channel information set in the memory and newly tuned to the service channel of the corresponding area to enable broadband service. This requires low noise, high-purity oscillation output and fast channel switching so that interference between adjacent channels does not occur. The heterodyne multiplying method, the Freescale fixed dispensing method, and the Press rice method are known.

Then, the region code is decoded using the Cap code of the tuned reference channel. Since the operator has designated 2 digits of the Cap code for regional classification, the wireless call receiver can identify the corresponding region by decoding the region code. Once the region has been identified, the service is tuned to an individual calling RF channel in the selected region. At this time, if reception is not possible, the above process is repeated until the corresponding region is tuned to the next region. When the multi-RF channel radio call receiving apparatus is able to find the area and receive the individual call RF channel, the second RF signal processing unit and the demodulator are tuned to the broadcast RF channel of the area and receive the broadcast information. At this time, the local broadcast RF channel is previously stored in the radio call receiving apparatus to refer to a good value.

In more detail, first, the data of the cap code allocated to the corresponding frame of the tuned reference channel is decoded (402) to analyze whether the decoded cap code matches one of the region codes of the predefined reference channel ( 403). This is to confirm the region by decoding the cap code because the wireless caller has designated the two digits of the cap code for regional classification.

As a result of the analysis, if the decoded cap code matches the one of the predefined area codes of the reference channel, the area is identified, and the mobile station moves to the service channel in the selected area (404) and checks whether individual call information can be received (405).

If the region is not identified because the decoded cap code does not match one of the region codes of the predefined reference channel, the first radio frequency signal processing unit 31 and after tuning to the reference channel of the next region (406); Using the first demodulator 33, the wireless calling service provider finds a reference frequency of a corresponding region designated for each region and tunes to a reference channel having the largest radio wave strength (401).

As a result of the test, if the individual call information cannot be received, after tuning to the reference channel of the next region (406), the radio calling service operator designated for each region by the first radio frequency signal processor 31 and the first demodulator 33 is designated. The reference frequency of the region is found and tuned to the reference channel having the largest radio wave strength (401).

As a result of the check, if the individual call information can be received, the individual call information is tuned to the individual call radio frequency channel (407).

Next, after tuning the second radio frequency signal processor 32 and the second demodulator 34 to the broadcast radio frequency channel of the region (408), it is determined whether broadcast information can be received (409).

As a result, if the broadcast information is receivable, the broadcast information is received (410). If not, the first radio frequency signal processor (31) and the first demodulator (33) are tuned to the reference channel of the next region (406). The radio calling service provider finds the reference frequency of the region designated by the region and tunes to the reference channel having the largest radio wave strength (401). Here, the local broadcast radio frequency channel refers to a value previously stored in the pager.

5 is a flowchart illustrating another embodiment of a method for receiving a multi-channel radio call according to the present invention, in which a region of a dummy cap code method is applied when the multi-channel radio call reception apparatus (see FIG. 3) is applied to a wide area service. The procedure for selecting and selecting a radio frequency channel is shown.

First, when the multi-channel radio call receiving apparatus moves to an area, the radio frequency is found by using a first radio frequency signal processor 31 and a first demodulator 33 to find a reference frequency of a corresponding area designated by the radio call provider for each area. Tunes to the largest reference channel (501). This is to find a service channel.

Here, when the power is turned on or the service area is changed, the service channel is scanned according to the channel information set in the memory and newly tuned to the service channel of the corresponding area to enable broadband service. This requires low noise, high-purity oscillation output and fast channel switching so that interference between adjacent channels does not occur. The heterodyne multiplying method, the Freescale fixed dispensing method, and the Press rice method are known.

Thereafter, the data of the dummy cap code allocated to the corresponding frame of the tuned reference channel is decoded. Since the paging service provider has designated the dummy cap code for regional classification, the paging receiver checks whether the decoded dummy cap code matches one of the predefined area codes. If it does not match, it is necessary to tune to the next reference channel and perform the above process again. If there is a match, the region is identified. At this time, if reception is not possible, it tunes to the reference channel of the next region and repeats the above process until it finds the corresponding region. When the multi-RF channel radio call receiving apparatus is able to find a corresponding area and receive an individual call RF channel, the second RF signal processor and demodulator are tuned to a broadcast RF channel of the corresponding area and receive broadcast information. At this time, the local broadcast RF channel refers to a value previously stored in the pager.

In detail, first, the data of the dummy cap code allocated to the corresponding frame of the tuned reference channel is decoded (502) to determine whether the decoded dummy cap code matches one of the region codes of the predefined reference channel. Analyze (503). This is to confirm the area by decoding the dummy cap code because the wireless caller has designated the dummy cap code for the regional classification.

As a result of the analysis, when the decoded dummy cap code matches one of the region codes of the predefined reference channel and the region is identified, the region is moved to the service channel in the selected region (504) and the individual call information is checked (505). .

If the region is not identified because the decoded dummy cap code does not match one of the region codes of the predefined reference channel, the first radio frequency signal processor 31 tunes to the reference channel of the next region (506). And using a first demodulator 33, finds a reference frequency of a corresponding region designated by the wireless calling service provider for each region, and tunes to a reference channel having the largest radio wave strength (501).

As a result of the test, if the individual call information cannot be received, after tuning to the reference channel of the next region (506), the radio calling service operator designated for each region by the first radio frequency signal processor 31 and the first demodulator 33 is designated. The reference frequency of the region is found and tuned to the reference channel having the largest radio wave strength (501).

As a result of the check, if the individual call information can be received, the individual call information is tuned to the individual call radio frequency channel (507).

Next, after tuning the second radio frequency signal processor 32 and the second demodulator 34 to the broadcast radio frequency channel of the region (508), it is determined whether the broadcast information can be received (509).

As a result, if the broadcast information is receivable, the broadcast information is received (510). If not, the first radio frequency signal processor (31) and the first demodulator (33) are tuned to the reference channel of the next region (506). The radio calling service provider finds the reference frequency of the region designated by the region and tunes to the reference channel having the largest radio wave strength (501). Here, the local broadcast radio frequency channel refers to a value previously stored in the pager.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains, and the above-described embodiments and accompanying It is not limited to the drawing.

As described above, the present invention can exclusively receive a broadcast channel in a system that broadcasts common information to a plurality of users so that a broadcast service provider can efficiently use frequency resources, and provide broadcast information and individual call information. When transmitting in a common radio frequency channel, by removing the case that the reception is impossible due to the congestion of data in advance, there is an effect that can ensure the stable reception of information to the user using the multi-channel radio call reception apparatus.

Claims (8)

In the multi-channel radio call receiving apparatus, A plurality of downconverting means for downconverting only a radio frequency channel matching a reference frequency band to a baseband signal among a plurality of radio frequency channels received from the outside; A plurality of reference frequency supply means for supplying a plurality of reference frequencies to the plurality of downconverting means, respectively, according to the frequency control signal of the control means; A plurality of demodulation means for demodulating baseband signals transmitted from said plurality of downconversion means; The control means for receiving and processing output signals of the plurality of demodulation means and providing the frequency control signal for controlling the plurality of reference frequency supply means; Display means for displaying, to a user, radio call-incoming data processed by the control means; Driving means for driving the display means; And Notification means for informing the user whether or not to receive the radio call incoming data Multi-channel radio call receiving apparatus comprising a. The method of claim 1, The plurality of downconversion means, respectively A first radio frequency amplifier for amplifying the plurality of radio frequency channels; A first frequency mixer for down-converting only the radio frequency channel matching the reference frequency band to an intermediate frequency among the plurality of radio frequency channels transmitted from the first radio frequency amplifier; A second radio frequency amplifier for amplifying the output signal of the first mixer; And A second frequency mixer for downconverting the output signal of the second RF amplifier to a baseband signal according to the reference frequency of the reference frequency supply means Multi-channel radio call receiving apparatus comprising a. The method according to claim 1 or 2, The demodulated channel among the plurality of radio frequency channels includes: Substantially, a multi-channel radio call reception apparatus comprising a reference channel for receiving individual call information and a broadcast radio frequency channel for receiving broadcast information. In the multi-channel radio call reception method applied to a multi-channel radio call reception apparatus, A first step of classifying broadcast information and individual call information by a base station and transmitting them on different radio frequency channels; When the area of the wireless calling terminal is moved, the reference frequency of the corresponding area is found using the first radio frequency signal processing unit and the demodulator of the wireless calling terminal, and is tuned to the reference channel having the largest wave strength, and the wide area service code of the reference channel is decoded. A second step of checking a corresponding area and receiving individual call information by tuning to an individual call radio frequency channel in a selected area; And A third step of receiving broadcast information by tuning to a broadcast radio frequency channel of a corresponding region using a second radio frequency signal processor and a demodulator; Multi-channel radio call reception method comprising a. The method of claim 4, wherein The first step is, A fourth step of tuning the first radio frequency signal processor and the demodulator to a reference channel having the largest radio wave intensity by finding a reference frequency of a corresponding region designated in advance; A fifth step of decoding the data of the wide area service code allocated to the corresponding frame of the tuned reference channel and analyzing whether the decoded wide area service code matches one of a region code of a predefined reference channel; A sixth step of checking whether the individual call information can be received by moving to the service channel in the selected area when the region is identified as the analysis result of the fifth step; A seventh step of shifting to the fourth step after tuning to a reference channel of a next area if a region is not identified because of an analysis result of the fifth step; And If it is impossible to receive the result of the sixth step, the eighth step is performed after tuning to the reference channel of the next region, if it is impossible to receive, and receiving the individual call information by tuning to the individual calling radio frequency channel if receivable. Multi-channel radio call reception method comprising a. The method of claim 5, The second step, A ninth step of tuning whether the second radio frequency signal processor and the demodulator are capable of receiving broadcast information after tuning to a broadcast radio frequency channel of a corresponding region; And As a result of the determination of the ninth step, if reception is not possible, after tuning to a reference channel of the next region, the process proceeds to the fourth step, and if the reception is possible, a tenth step of receiving broadcast information. Multi-channel radio call reception method comprising a. The method according to any one of claims 4 to 6, The wide area service code is, Substantially, a multi-channel radio call reception method, characterized in that the cap (Cap) code. The method according to any one of claims 4 to 6, The wide area service code is, Substantially, a multi-channel wireless call reception method, characterized in that the dummy cap (Dummy Cap) code.