KR100893443B1 - Signal processing method and apparatus for providing digital multimedia broadcasting service in handover area - Google Patents

Abstract

The present invention relates to a signal processing method and apparatus for providing a DMB service with a smooth reception quality in an overlapping area. According to the present invention, a reception quality of a first DMB service signal received by a DMB terminal in an overlapping area is monitored and the monitoring is performed. If the received reception quality does not satisfy the set criteria, the second DMB service signal from the second transmitting station is collected, and the first DMB service signal and the collected second DMB service signal are diversity-processed, thereby overlapping the area. Also provides a smooth reception quality DMB service.

DMB, Handover, Receive Quality, Overlapped Area

Description

SIGNAL PROCESSING METHOD AND APPARATUS FOR PROVIDING DIGITAL MULTIMEDIA BROADCASTING SERVICE IN HANDOVER AREA}

1 is a flowchart illustrating a signal processing method according to an embodiment of the present invention.

2 is a diagram illustrating an example of a DMB service in an overlapping area according to an embodiment of the present invention.

FIG. 3 is a diagram for describing a circuit implementing the signal processing method of FIG. 1.

4 is a diagram illustrating a method for collecting DMB service signals according to an embodiment of the present invention.

5 is a block diagram illustrating an internal configuration of a signal processing apparatus according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

500: signal processing unit

510: reception quality checking unit

520: signal collector

530: signal processing unit

The present invention relates to a method and apparatus for providing a DMB service having a smooth reception quality in an overlapping area. More specifically, the signal processing apparatus according to the present invention provides a reception quality of a first DMB service signal received by a DMB terminal in an overlapping area. And collect a second DMB service signal from a second transmission station, and divert the first DMB service signal and the collected second DMB service signal if the monitored reception quality does not satisfy a set criterion. By city processing, it is possible to provide a DMB service with smooth reception quality even in an overlapping area.

Today, thanks to the rapid development of digital technology, DMB services are widely used.

For the DMB service, the DMB service signal transmitted from the broadcaster is delivered to each transmitting station, and the DMB terminal receives the DMB service signal transmitted from the specific transmitting station and provides it to the viewer. The DMB service signal is transmitted to the corresponding DMB terminal within service coverage that can be covered by each transmitting station, and each transmitting station transmits a DMB service signal at a different frequency, so that even if the same DMB service is used, different frequencies are provided for each service coverage. Is sent out. If the DMB terminal enters an overlapping area where the service coverage of the transmitter A and the service coverage of the transmitter B overlap, the DMB terminal must determine from which source the DMB service signal will be received. At this time, the DMB terminal selects a DMB service signal having a greater signal strength from the strength of the DMB service signal from the transmitter A and the strength of the DMB service signal from the transmitter B, and hands over to the corresponding transmitter. However, considering that the overlapped area is the outermost part of the service coverage, the quality of DMB service in the overlapped area is not expected to be higher than a certain level. Therefore, there is a need for a technical idea that can provide a high quality DMB service to a user even in an overlapping region where a plurality of service coverages overlap.

The present invention has been made to solve the above problems, to provide a signal processing method and a signal processing apparatus for continuously providing a high quality DMB service to a user moving to an adjacent DMB service area.

It is an object of the present invention to reduce the fading characteristics of DMB service signals occurring in overlapping regions where service coverage overlaps.

Another object of the present invention is to improve the signal-to-noise ratio in the overlapping area to continuously provide a DMB service signal of a user desired quality.

Another object of the present invention is to extend service coverage for DMB services.

In order to achieve the above object and solve the problems of the prior art, the signal processing method for the DMB service in the overlapping area according to an embodiment of the present invention is to receive the reception quality of the first DMB service signal received from the first transmission station; Monitoring, collecting a second DMB service signal from a second transmitting station when the monitored reception quality does not satisfy a set criterion, and collecting the first DMB service signal and the collected second DMB service signal. And diversity processing.

In accordance with an aspect of the present invention, there is provided a signal processing apparatus for a DMB service in an overlapping region, including: a reception quality checking unit configured to monitor a reception quality of a first DMB service signal received from a first transmission station; If not satisfied, the signal collection unit for collecting a second DMB service signal from a second transmission station, and a signal processing unit for diversity processing the first DMB service signal and the collected second DMB service signal It is done.

The signal processing apparatus described herein may be included in the DMB terminal, or only some of the components may be included in the DMB terminal.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings and the contents described in the accompanying drawings, but the present invention is not limited or limited to the embodiments.

1 is a flowchart illustrating a signal processing method according to an embodiment of the present invention.

Referring to FIG. 1, in step 101, a signal processing apparatus for implementing the signal processing method monitors a reception quality of a DMB service signal received by a DMB terminal. At this time, the DMB terminal is moving from the service coverage of a specific transmission station to another service coverage, and as the DMB service signal strength from the service coverage is weakened, it starts to provide a low quality DMB service.

Next, in step 102, the signal processing apparatus determines whether the monitored reception quality does not satisfy a set criterion, that is, whether the reception quality of the monitored DMB service signal is less than or equal to a preset threshold value, and If the reception quality is greater than or equal to the threshold, the flow returns to step 101 to monitor the reception quality of the DMB service signal received by the DMB terminal.

If the reception quality is less than or equal to the threshold, the signal processing device collects the same DMB service signals of different bands in step 103. That is, as the DMB terminal is located in an overlapping area, the DMB terminal may receive a DMB service signal from a transmitting station representing an adjacent service coverage.

Each transmitting station transmits DMB service signals using different frequencies. Accordingly, the signal processing apparatus checks the type of the DMB service signal provided by each transmitting station and the frequency band of the corresponding transmitting station, and if the DMB service signal currently used by the DMB terminal is provided by the corresponding transmitting station, and if so, which frequency band is transmitted? Should be checked. When the frequency band for the DMB service is confirmed, the signal processing apparatus scans the frequency band and collects a DMB service signal transmitted by an adjacent transmitting station. For example, a case may be considered in which the signal processing apparatus enters an overlapping region between the service coverage A and the service coverage B while using the first DMB service signal provided by the service coverage A. FIG. In this case, if the service coverage A and the service coverage B provide the first DMB service signal at different frequencies, the signal processing apparatus together with the first DMB service signal currently received, the frequency of the service coverage B. The band is also identified to collect the first DMB service signal from the service coverage B. In this case, the first DMB service signal of the service coverage A and the first DMB service signal of the service coverage B are the DMB service signals that provide the same content but differ only in the frequency at which they are transmitted.

Next, the signal processing apparatus diversity processing the first DMB service signal and the collected second DMB service signal in step 104, and the diversity processed DMB service signal is provided to a user through a DMB terminal. That is, in order to improve the quality of the DMB service, the signal processing apparatus may receive the first DMB service signal and the second DMB service signal transmitted from the second transmission station in a band other than the band in which the first DMB service signal is transmitted. Collect and handle diversity.

In one example, the signal processing apparatus checks signal levels of each of the collected DMB service signals, and performs a DMB having the largest signal level among the identified signal levels in order to diversity the collected DMB service signals. Diversity only service signals. For example, when the DMB terminal uses a DMB service in service coverage A and moves and is located in an overlapped area of service coverage A and service coverage B, the signal strength of the DMB service signals of both service coverages is checked to make it larger. Receive only DMB service signals of service coverage with signal strength. If the signal strength from the service coverage A in the overlapped region is large, the DMB terminal continues to use the DMB service signal of the service coverage A, and if the signal strength from the service coverage B in the overlapped region is large, The DMB terminal uses the DMB service signal of the service coverage B. That is, the DMB terminal hands over to service coverage B.

As another example, the signal processing apparatus checks signal levels of each of the collected DMB service signals and performs diversity processing by reflecting weights corresponding to the ratio of the identified signal levels to each of the collected DMB service signals. . For example, if the signal level of service coverage A and the level of service coverage B received by the DMB terminal located in the overlapped area are 3: 7, the signal processing apparatus may apply to the DMB service signal of the service coverage A. Diversity may be performed by multiplying a weight of 3 and multiplying a DMB service signal of the service coverage B by a weight of 7. Alternatively, the signal processing apparatus may process diversity by applying the same weight to the collected DMB service signals. As a result, the signal-to-noise ratio of the collected DMB service signals is increased, and the fading characteristic by the respective DMB service signals can be significantly reduced.

The signal processing apparatus according to an embodiment of the present invention time synchronizes the collected DMB service signals. For example, in a multi frequency network (MFN), time synchronization of respective DMB service signals is required. Accordingly, the signal processing apparatus according to the present invention processes the time synchronization of DMB service signals collected through different frequencies from each transmitting station.

As a result, by implementing the signal processing method according to the present invention, it is possible to continuously provide a high quality DMB service to a user moving to an adjacent DMB service area.

In addition, by implementing the signal processing method according to the present invention, it is possible to reduce the fading characteristics of the DMB service signal generated in the overlapped area of the service coverage, improve the signal-to-noise ratio in the overlapped area, the high quality DMB to the user It can continuously provide service signals.

In addition, by implementing the signal processing method according to the present invention, there is an advantage that the service coverage for the DMB service can be extended.

2 is a diagram illustrating an example of a DMB service in an overlapping area according to an embodiment of the present invention.

Referring to FIG. 2, the DMB terminal is currently located in the first transmitting station 210 and is planning to move to the third transmitting station 230 via the second transmitting station 220. In this case, the first transmission station 210 provides a DMB service of 'STAR' broadcasting, 'Data' broadcasting, and 'Music' broadcasting serviced by KBS, and the second transmission station 220 provides 'STAR' broadcasting serviced by KBS. , DMB services of 'Data' broadcasting, and 'Heart' broadcasting, and the third transmitting station 230 provides the same DMB service as the second transmitting station 220. If the user of the DMB terminal is away from the first transmitting station 210 while currently watching the 'STAR' broadcast in the service coverage of the first transmitting station 210, the reception quality of the 'STAR' broadcasting is highly likely to be deteriorated. . Thus, if the DMB terminal is located far from the first transmitting station 210 in the overlapping area 240 of the service coverage of the first transmitting station 210 and the service coverage of the second transmitting station 220, the DMB terminal is currently receiving. The 'STAR' broadcast from the first transmission station 210 and the 'STAR' broadcast from the second transmission station 220 may output high quality 'STAR' broadcasts through the diversity of the DMB service signal. To this end, the signal processing apparatus according to the present invention monitors the reception quality of the 'STAR' broadcast received by the DMB terminal and checks whether the reception quality of the 'STAR' broadcast falls below a threshold in an overlapping region. Accordingly, when the reception quality of the 'STAR' broadcast falls below a threshold value, the signal processing apparatus first checks whether the 'STAR' broadcast is provided from the second adjacent transmitting station 220 using the handover information, and provides the same. In this case, the frequency band of the second transmitting station 220 is checked using the handover information.

When the frequency band is confirmed, the signal processing apparatus simultaneously receives the 'STAR' broadcast in the other band provided by the second transmitting station 220 as well as the 'STAR' broadcasting currently received from the first transmitting station 210. . The signal processing apparatus may diversity process 'STAR' broadcast received in the two bands, and the DMB terminal outputs the diversity processed 'STAR' broadcast. Accordingly, the user can use the high quality DMB service by watching the diversity-processed 'STAR' broadcast.

In addition, the signal processing apparatus is described above even when the DMB terminal enters the overlapping area 250 with the service coverage of the third transmitting station 230 after the handover to the service coverage of the second transmitting station 220. Similarly, diversity processing can provide high quality DMB services to users.

Handover information according to an embodiment of the present invention may be provided from a broadcasting station server. The handover information is information referred to for handover by the DMB terminal and includes a frequency band of a specific transmitting station, an ensemble ID or service ID provided by the corresponding transmitting station, and is provided from a broadcasting station server. For example, the signal processing apparatus may use the handover information by receiving the information periodically transmitted by the broadcasting station server through the FIC channel and maintaining the information in the storage medium. In addition, the signal processing apparatus may use the handover information by using the information transmitted from the broadcasting station server in the idle time zone or by downloading the handover information from the web page associated with the broadcasting station server.

3 is a diagram illustrating a circuit for implementing the signal processing method of FIG. 1 according to an exemplary embodiment of the present invention.

In the above, the case where two service coverages overlap is described, but in FIG. 3, the signal processing method according to the present invention will be described through the case where four service coverages overlap.

Referring to FIG. 3, the DMB terminal receives DMB service signals of the same content as shown by reference numerals 310, 320, 330, and 340 from neighboring transmitting stations. Each DMB service signal is transmitted through an independent frequency band, and the signal processing apparatus according to the present invention collects DMB services of the corresponding frequency band by using different tuners. Specifically, the signal processing apparatus receives the DMB service signal 310 from the first transmission station through the tuner 311 and performs a Fourier transform through a Fast Fourier Transformer (312). Similarly, the signal processing apparatus receives the DMB service signal 320 from the second transmission station through the tuner 321 and receives the DMB service signal 330 from the third transmission station via the tuner 331. And receives the DMB service signal 340 from the fourth transmission station via the tuner 341. In addition, the signal processing apparatus performs a Fourier transform of the DMB service signals received from each transmission call received through each tuner using fast Fourier transformers 322, 332, and 342. In addition, the signal processing apparatus diversity-processes the DMB service signal from each of the Fourier-transformed transmitting stations using the diversity circuit 350 to generate a stable high quality DMB service signal as shown by reference numeral 370. For example, when the signal processing apparatus checks the signal level of the DMB service signal collected by each tuner using the weight circuit 360, and the diversity circuit 350 processes the DMB service signal, The weight to use can be provided.

4 is a diagram illustrating a method for collecting DMB service signals according to an embodiment of the present invention.

The signal processing apparatus should collect DMB service signals of different bands that are divided into the same content in order to improve the reception quality of the DMB service signal whose reception quality is degraded. 4, the signal processing apparatus according to the present invention maintains the handover information provided by the broadcasting station server in the recording apparatus in step 401. The handover information includes an ensemble ID provided in each region (each service coverage), a service ID corresponding to the ensemble ID, and frequency information for signal transmission.

Next, in step 402, the signal processing apparatus compares whether the first ensemble ID of the DMB service signal used by the DMB terminal in the current region is the same as the second ensemble ID provided in the neighboring region. That is, it is determined whether the same ensemble ID is provided at different frequencies in the current region and the adjacent region.

As a result of the comparison of step 402, if it is the same, branching is made to step 404 in step 403, and if not, branching to step 406 in step 403. If, as a result of the comparison of step 402, the first ensemble ID and the second ensemble ID are the same, the signal processing apparatus checks frequency information of the second ensemble ID of the adjacent region in step 404. That is, the signal processing apparatus checks to which frequency band an ensemble ID including the DMB service currently used by the DMB terminal is transmitted from a transmitting station of the neighboring region.

Accordingly, when the frequency information is confirmed, the signal processing apparatus may first scan the identified frequency information in step 405 to collect a DMB service signal that is provided in an adjacent band and is identical to the currently used DMB service signal. As a result, the signal processing apparatus according to the present invention further collects the same DMB service signal provided in the adjacent area as well as the DMB service signal provided in the current area.

As another example, if the first ensemble ID and the second ensemble ID are not equal to each other as a result of the comparison of step 402, the signal processing apparatus may perform a third ensemble of a neighboring area including a currently used DMB service signal in step 406. Check the ID. That is, even if the neighboring region does not provide the current region and the ensemble ID, the ensemble ID including the current DMB service signal is checked. The relationship between the ensemble ID and the DMB service signal corresponding to the ensemble ID may be confirmed through the maintained handover information. As a result, the signal processing apparatus may check the handover information to determine which ensemble ID the current DMB service signal is provided in an adjacent region, and thus the signal processing apparatus may determine the handover information in step 407. The frequency information to which the third ensemble ID is transmitted is checked.

Similarly, the signal processing apparatus confirming the frequency information first scans the identified frequency information and collects the same DMB service signal transmitted in another band.

As a result, as shown in step 103 of FIG. 1, the apparatus for processing a signal according to the present invention together with the DMB service signal being used by the DMB terminal in the current region, is the same as the DMB service signal but provides all the DMB service signals provided in each adjacent region. Can be collected. Accordingly, the signal processing apparatus may not only improve the fading characteristics by diversity processing the collected DMB service signals, but also provide a high quality DMB service signal by improving the signal-to-noise ratio.

5 is a block diagram illustrating an internal configuration of a signal processing apparatus 500 according to an embodiment of the present invention.

Referring to FIG. 5, the signal processing apparatus 500 according to the present invention includes a reception quality checking unit 510, a signal collecting unit 520, and a signal processing unit 530.

First, the reception quality checking unit 510 monitors the reception quality of the DMB service signal received by the DMB terminal in the current region. In general, the DMB service signal of the current region overlapping with the coverage area of the adjacent region is likely to degrade reception quality. Therefore, the reception quality checking unit 510 according to the present invention monitors the reception quality by frequently monitoring the DMB service signal provided to the DMB terminal. For example, the reception quality checking unit 510 may monitor the reception quality by checking whether the signal level of the DMB service signal falls below a preset threshold.

If the reception quality checking unit 510 determines that the reception quality is less than or equal to the threshold value, the signal collection unit 520 collects the same DMB service signal as the DMB service signal currently being used by the DMB terminal from the adjacent service coverage. To this end, the signal collection unit 520 downloads and maintains handover information from a broadcasting station server in advance, and checks an ensemble ID, service ID, frequency information, etc. provided in the adjacent service coverage with reference to the handover information. do. When the ensemble ID, service ID, and frequency information are confirmed, the signal collector 520 scans the frequency band of the adjacent service coverage and collects the DMB service signal from the adjacent service coverage.

For example, in the case of providing the same ensemble between the current service coverage and the adjacent service coverage, the signal collection unit 520 confirms the frequency information of the adjacent service coverage by checking the handover information, and through the frequency information A DMB service signal may be collected by scanning a corresponding ensemble ID provided from the adjacent service coverage. As another example, if the same ensemble is not provided between the current service coverage and the adjacent service coverage, but the same DMB service signal is provided, the signal collector 520 checks the handover information and is provided in the adjacent service coverage. The ensemble ID including the DMB service signal is checked. In addition, the frequency information of the identified ensemble ID may be checked, and the DMB service signal may be collected by scanning the corresponding ensemble ID provided from the adjacent service coverage through the frequency information. In this case, when there are a plurality of adjacent service coverages, the signal collector 520 synchronizes each DMB service signal collected from each service coverage in time.

Next, the signal processor 530 diversity the collected DMB service signals. In this case, the signal processor 530 may assign diversity to each DMB service signal. For example, the signal processor 530 may check signal levels of each of the collected DMB service signals, and may diversity process only the DMB service signal having the largest signal level among the identified signal levels. That is, the signal processor 530 determines that the DMB service signal from the service coverage having the weak signal level has a low signal-to-noise ratio and thus negatively affects the reception quality. May be excluded from the treatment.

As another example, the signal processor 530 may check signal levels of each of the collected DMB service signals, reflect weights corresponding to the ratio of the identified signal levels to each of the collected DMB service signals, and the weight. The DMB service signals may be diversity processed. That is, since the DMB service signal has a noise characteristic as the signal level is smaller, the signal processor 530 gives higher weight to the DMB service signal having a higher signal level and performs diversity processing. As another example, the signal processor 530 may process diversity by giving the same weight to each of the DMB service signals.

As a result, using the signal processing apparatus according to the present invention, it is possible to continuously provide a high quality DMB service to a user moving to an adjacent DMB service area. In addition, using the signal processing apparatus according to the present invention, it is possible to significantly reduce the fading characteristics of the DMB service signal generated in the overlapped region where the service coverage is overlapped, and to improve the signal-to-noise ratio in the overlapped region, DMB service signal can be continuously provided. In addition, using the signal processing apparatus according to the present invention, there is an effect that can extend the service coverage for the DMB service.

Embodiments of the invention include a computer readable medium containing program instructions for performing various computer-implemented operations. The computer readable medium may include program instructions, local data files, local data structures, or the like, alone or in combination. The media may be those specially designed and constructed for the purposes of the present invention, or they may be of the kind well-known and available to those having skill in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical recording media such as CD-ROMs, DVDs, magnetic-optical media such as floppy disks, and ROM, RAM, flash memory, and the like. Hardware devices specifically configured to store and execute the same program instructions are included. The medium may be a transmission medium such as an optical or metal wire, a waveguide, or the like for transmitting a signal specifying a program command, a local data structure, or the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like.

While specific embodiments of the present invention have been described so far, various modifications are possible without departing from the scope of the present invention.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the scope of the following claims, but also by those equivalent to the scope of the claims.

As can be seen from the above description, according to the present invention, it is possible to provide a signal processing method and a signal processing apparatus for continuously providing a high quality DMB service to a user moving to an adjacent DMB service area.

According to the present invention, the fading characteristics of the DMB service signal generated in the overlapped region where the service coverage overlaps can be reduced.

According to the present invention, it is possible to continuously provide a DMB service signal of a desired quality by improving a signal-to-noise ratio in an overlapping area.

According to the present invention, service coverage for a DMB service can be extended.

Claims (19)

Maintaining handover information; Monitoring reception quality of a first DMB service signal received from a first transmitting station; If the monitored reception quality does not satisfy a set criterion, from the maintained handover information, a first ensemble ID provided in the current region associated with the first DMB service signal and a neighboring region associated with the current region; Confirming a second ensemble ID; Comparing the checked first ensemble ID with the checked second ensemble ID; Confirming frequency information corresponding to the second ensemble ID from the handover information when the comparison result is matched; First scanning the identified frequency information to collect the second DMB service signal from a second transmitting station; And Diversity processing the first DMB service signal and the collected second DMB service signal Signal processing method for a DMB service in an overlapping region comprising a. The method of claim 1, The collecting of the second DMB service signal may include: Collecting a second DMB service signal corresponding to the first DMB service signal transmitted from the second transmission station using a band other than the band where the first DMB service signal is transmitted; Signal processing method for a DMB service in an overlapping region comprising a. The method of claim 1, The step of diversity processing, Measuring a signal level of the collected second DMB service signal; Selecting a second DMB service signal having a signal level measured as the largest value as a result of the measurement; And Diversity processing the first DMB service signal and the selected second DMB service signal Signal processing method for a DMB service in an overlapping region comprising a. The method of claim 1, The step of diversity processing, Measuring a signal level of the collected second DMB service signal; For each of the collected second DMB service signals, determining a weight corresponding to the ratio of the measured signal levels; And Diversity processing the first DMB service signal and the second DMB service signals reflecting the determined weight; Signal processing method for a DMB service in an overlapping region comprising a. The method of claim 1, The step of diversity processing, Determining equal weights for each of the collected second DMB service signals; And Diversity processing the first DMB service signal and the second DMB service signals reflecting the determined weight; Signal processing method for a DMB service in an overlapping region comprising a. The method of claim 1, The step of diversity processing, Time synchronizing the collected second DMB service signals; And Diversity processing the time-synchronized second DMB service signal Signal processing method for a DMB service in an overlapping region comprising a. delete delete The method of claim 1, Determining whether the same DMB service signal as the first DMB service signal is included in the second ensemble ID if the result of the comparison does not match; And Confirming frequency information corresponding to the second ensemble ID from the handover information, if included in the determination result; Signal processing method for a DMB service in the overlapping region, characterized in that it further comprises. The method of claim 1, The step of maintaining handover information, Receiving, by a broadcasting station server, handover information periodically transmitted through a fast information channel (FIC) channel and maintaining the information on a storage medium; Signal processing method for a DMB service in an overlapping region comprising a. The method of claim 1, The step of maintaining handover information, Receiving handover information transmitted by the broadcasting station server in the idle time zone and maintaining it on the storage medium Signal processing method for a DMB service in an overlapping region comprising a. The method of claim 1, The step of maintaining handover information, Downloading handover information from a web page associated with a broadcast station server and maintaining it on a storage medium; Signal processing method for a DMB service in an overlapping region comprising a. A computer-readable recording medium having recorded thereon a program for performing the method of any one of claims 1 to 6 and 9 to 12. A reception quality checking unit for monitoring a reception quality of a first DMB service signal received from a first transmitting station; A signal collector configured to collect a second DMB service signal from a second transmitting station when the monitored reception quality does not satisfy a set criterion; And A signal processor for diversity processing the first DMB service signal and the collected second DMB service signal. Including, The signal collector, Maintain handover information, and identify, from the handover information, a first ensemble ID provided in a current region associated with the first DMB service signal and a second ensemble ID provided in an adjacent region associated with the current region, When the checked first ensemble ID and the checked second ensemble ID are matched and matched, the frequency information corresponding to the second ensemble ID is checked from the handover information, and the determined frequency information is given priority. And collecting the second DMB service signal from a second transmitting station by scanning with a second transmitter. The method of claim 14, The signal collector, And collecting a second DMB service signal corresponding to the first DMB service signal transmitted from the second transmission station using a band other than the band where the first DMB service signal is transmitted. Signal processing device for. The method of claim 14, The signal processing unit, The signal level of the collected second DMB service signal is measured, and as a result of the measurement, the second DMB service signal of the signal level measured as the largest value is selected, and the first DMB service signal and the selected second DMB are selected. A signal processing apparatus for a DMB service in an overlapping region, characterized by diversity processing of a service signal. The method of claim 14, The signal processing unit, Measuring a signal level of the collected second DMB service signal, determining a weight corresponding to the ratio of the measured signal level for each of the collected second DMB service signals, and determining the weight of the first DMB service signal; And a diversity process of the second DMB service signals reflecting the determined weight. The method of claim 14, The signal processing unit, The same weight is determined for each of the collected second DMB service signals, and diversity processing is performed on the first DMB service signal and the second DMB service signals reflecting the determined weight. Signal processing device for. The method of claim 14, The signal processing unit, And time-synchronizing the collected second DMB service signal and diversity processing the time-synchronized second DMB service signal.

Images