KR102013409B1 - channel scanning method for channel-list management in mobile broadcasting environment - Google Patents

Abstract

The present invention generally relates to a channel scanning technique for managing a channel list in a mobile broadcast receiving environment. More specifically, the present invention allows the user to effectively manage the channel list by selecting the frequency bands necessary at the current location and performing limited scanning when the user moves beyond the reception area while watching the mobile broadcast. A scanning technology. The channel scanning technique according to the present invention can be suitably applied to a mobile broadcast receiving apparatus for receiving a broadcast while moving, such as a vehicle AVN system, a vehicle broadcast receiver, a mobile receiver, and the like. According to the present invention, when moving beyond the reception area during mobile broadcast viewing, by performing a limited scanning by selecting a frequency band necessary for achieving a high speed handover by minimizing the time required to search for the broadcasting station currently being viewed. There is an advantage to this. In other words, by efficiently performing channel search when the receiving area moves, it is possible to quickly receive broadcasting and TPEG data, thereby providing a comfortable mobile broadcasting viewing environment.

Description

Channel scanning method for channel list management in mobile broadcasting reception {channel scanning method for channel-list management in mobile broadcasting environment}

The present invention generally relates to a channel scanning technique for managing a channel list in a mobile broadcast receiving environment.

More specifically, the present invention allows the user to effectively manage the channel list by selecting the frequency bands necessary at the current location and performing limited scanning when the user moves beyond the reception area while watching the mobile broadcast. A scanning technology.

The channel scanning technique according to the present invention can be suitably applied to a mobile broadcast receiving apparatus for receiving a broadcast while moving, such as a vehicle AVN system, a vehicle broadcast receiver, a mobile receiver, and the like.

In the process of digitalization of broadcasting technology, there is a demand for digital multimedia broadcasting service in a mobile environment such as a vehicle or a railway. TDMB broadcasting (Terrestrial Digital Multimedia Broadcasting) is a typical mobile broadcasting reception technology.

In TDMB broadcasting, a plurality of transmitting antennas are installed for each region, and broadcast signals are transmitted at frequencies of terrestrial bands pre-allocated for each broadcasting company. A coverage area, that is, a reception area, is formed around each transmission antenna to effectively receive the broadcast signal transmitted from the antenna. As such, in the mobile broadcasting reception technology, a plurality of receiving areas are set up like nets in different regions to cover a large area that cannot be handled by a single transmitter.

1 is a diagram conceptually illustrating a general mobile broadcast receiving environment. In FIG. 1, a metropolitan area transmitting station covering a metropolitan area and a Chungcheong area transmitting station covering a Chungcheong area are shown, and a mobile broadcast receiving device (eg, a vehicle TDMB receiver) is mounted on a vehicle 30 driving a Gyeongbu highway. .

As the vehicle 30 travels, the mobile broadcast receiving apparatus moves from the receiving zone of the metropolitan transmission station to the receiving zone of the Chungcheong zone transmission station. In the present specification, when the mobile broadcast receiving apparatus crosses the receiving region as described above, the receiving region in which the mobile broadcasting receiving apparatus belongs to the existing 'current region 10' is referred to as the 'next region 20'. It is called.

In the related art, as the vehicle 30 moves beyond the reception area, the TDMB service (hereinafter, referred to as a 'broadcasting watch service') that has been previously viewed in the current area 10 may not be normally played back at any moment. This is because the frequency allocation arrangement has changed as the receiving area is changed. The mobile broadcast reception device preferably finds and plays a previous broadcast viewing service by newly searching for a channel in the next region 20, which is called a handover.

In order to perform this handover, the mobile broadcast receiver discards the existing channel list and sets a new one when it detects a deviation from the reception area. For this purpose, the mobile broadcast receiver newly performs channel scanning on the entire frequency band according to the mobile broadcast standard. Collect a list of channels. However, in this case, since all the frequency bands irrelevant to the previously viewed content are searched, it takes a long time until the handover is completed. There is a problem of long waiting for broadcast content playback and TPEG (traffic information) data reception to be resumed.

In this case, if the mobile broadcasting receiver has a status of frequency allocation for each broadcast reception channel in advance, handover may be performed without performing channel scanning on the entire frequency band. The GPS receiver acquires the current position of the mobile broadcasting receiver and reflects the list of channels to be applied in the current receiving area. However, there is a problem in that handover is impossible when the allocation frequency for each region is changed or a broadcasting region is newly added. If the mobile broadcast reception environment changes, the software must be upgraded to cope with the change. However, the burden for a company providing a mobile broadcast reception device is considerable.

Accordingly, there is a need for a technique that removes the problems of the prior art and implements a desirable mobile broadcast viewing environment.

SUMMARY OF THE INVENTION An object of the present invention is to provide a channel scanning technique for managing a channel list in a mobile broadcast receiving environment.

Particularly, an object of the present invention is to provide a channel scanning system that effectively manages a channel list by performing a limited scanning by selecting a frequency band necessary at a current location when a user moves beyond a receiving area while watching a mobile broadcast. To provide technology.

In order to achieve the above object, a channel scanning method according to the present invention is a channel scanning method performed by a mobile broadcast receiving apparatus to manage a channel list in real time in response to departure of a receiving area in a mobile broadcasting receiving environment having a plurality of receiving areas. A method comprising: a first step of storing an adjacent frequency table in which at least one neighboring reception area and frequency channels of an adjacent reception area are mapped for each reception area; A second step of identifying a current area that receives a mobile broadcast; Extracting at least one candidate neighbor frequency for the current region by referring to the neighbor frequency table; A fourth step of identifying a coverage area departure; And a fifth step of performing channel scanning on the candidate neighbor frequency.

In addition, the channel scanning method according to the present invention includes a first step of identifying a first channel list to be used for mobile broadcast reception; A second step of identifying a current area that receives a mobile broadcast; A third step of initializing and setting a candidate neighbor frequency; Performing a channel scanning on the entire frequency band to identify a second channel list in which a broadcast signal is effectively received; A fifth step of adding to a candidate neighbor frequency when a channel not included in the first channel list is found in the second channel list; A sixth step of continuously carrying out the fourth and fifth steps until the coverage area departure occurs; A seventh step of identifying a territorial deviation; And an eighth step of performing channel scanning on the candidate neighboring frequency.

In this case, the ninth step of mapping the candidate neighbor frequency to the current domain and store in the neighbor frequency table; may further include.

In the present invention, the second step includes: a step of identifying channel allocation information for the plurality of receiving areas; B) identifying a current valid channel which is a frequency channel in which the mobile broadcast signal is effectively received in the current reception area; And setting the at least one receiving area having channel allocation information corresponding to the current valid channel as the current area.

In this case, the second step may include: d) identifying metadata allocation information for the plurality of receiving areas; Extracting metadata of at least one of an Ensemble ID (EID), a Service ID (SID), and a Service Label from the currently validly received mobile broadcast signal; Selecting a receiving area having metadata allocation information corresponding to the metadata extracted in step e from among at least one receiving area identified as the current area in step c; G) resetting the selected receiving zone to the current zone.

On the other hand, the computer-readable nonvolatile recording medium according to the present invention is a computer program recorded for executing the channel scanning method for channel list management in the above-mentioned mobile broadcast reception.

According to the present invention, when moving beyond the reception area during mobile broadcast viewing, by performing a limited scanning by selecting a frequency band necessary for achieving a high speed handover by minimizing the time required to search for the broadcasting station currently being viewed. There is an advantage to this. In other words, by efficiently performing channel search when the receiving area moves, it is possible to quickly receive broadcasting and TPEG data, thereby providing a comfortable mobile broadcasting viewing environment.

1 is a diagram illustrating a concept of handover in a general mobile broadcast receiving environment.
2 is a flowchart illustrating a channel scanning process according to the first embodiment of the present invention.
3 is a view showing the present status of TDMB frequency deployment in Korea.
4 is a diagram showing an adjacent frequency table for TDMB in the present invention.
5 is a flowchart illustrating a channel scanning process according to a second embodiment of the present invention.
6 is a diagram showing the concept of an adjacent frequency according to the present invention.
7 is a flowchart showing an embodiment for current zone identification in the present invention.
8 is a flowchart showing a process of elaborating the current domain identification result in the present invention.
9 is a diagram illustrating an example of metadata setting according to a receiving area.

The present invention provides a fast channel scanning process for generating a list of channels that can normally receive mobile broadcasts in the next area when the broadcast receiving device moves geographically out of the receiving area in a mobile broadcast receiving environment having a plurality of receiving areas. Technology that can be performed. The mobile broadcast reception apparatus manages a list of currently available channels in real time, thereby providing a user-friendly mobile broadcast viewing environment by reducing the screen interruption during the handover process.

As described with reference to FIG. 1, the reception rate of a broadcast signal is reduced while leaving the reception area for the broadcast currently being received. In this case, the present invention creates and applies a channel list within a short time by performing scanning by selecting only a required frequency according to an intelligent channel scan algorithm without performing channel scanning on all frequencies used by the broadcast receiving apparatus.

According to the present invention, when the receiving area is moved while driving a vehicle, the broadcast receiving device actively determines and searches the effective service channel of the next area, or minimizes the action even if the user operates the user-friendly viewing environment. Not only does it provide, but it can also contribute to safe operation.

In this specification, three embodiments are provided for this purpose. In the first embodiment, a neighbor frequency table is pre-stored in a broadcast receiving apparatus and used for channel scanning. In the second embodiment, the neighbor frequency table is directly generated by a broadcast receiving apparatus in real time and used for channel scanning. Lastly, in the third embodiment, a neighbor frequency, an ensemble ID (EID), a service ID (SID), and a service label information are comprehensively used to create and operate an adjacent frequency table.

Hereinafter, with reference to the drawings will be described in detail the present invention.

FIG. 2 is a flowchart illustrating a channel scanning process according to a first embodiment in which an adjacent frequency table according to a reception area is previously stored in a mobile broadcasting receiver and used in a channel scanning process according to the present invention. In the present invention, the channel scanning process is a process performed by the mobile broadcast receiving apparatus to manage the channel list in real time in response to departure from the reception area.

Step S100: First, the mobile broadcast reception device stores the neighbor frequency table in advance. The neighbor frequency table is a table that stores information about the neighboring reception area for each reception area. Preferably, an adjacent frequency table can be constructed by mapping one or more adjacent receiving zones for each receiving zone and frequency channels assigned to these adjacent receiving zones.

An example of an adjacent frequency table will be described with reference to FIGS. 3 and 4. FIG. 3 is a diagram showing the frequency allocation status for the TDMB broadcasting system of Korea obtained from the Korea Communications Agency (www.kca.kr). TDMB uses channels # 7 through # 13, which are assigned different frequency channels in different regions. From the TDMB frequency allocation status, an adjacent frequency table can be prepared as shown in FIG. Looking at the first line, channels # 8 and # 12 are used in the Seoul metropolitan area (Seoul and Gyeonggi), and the adjacent areas that can be met when traveling by car or rail are the Chungcheong-do and Gangwon-do areas, respectively. The use of channel # 13 is described. Other rows of the adjacent frequency table can also be interpreted this way.

Step S110: Identifies the current area in which the mobile broadcast is normally received. Preferably, the current area can be identified from the frequency channel in which the current mobile broadcast signal is effectively received. For example, if mobile broadcast signals are received through channels # 8 and # 12, it can be assumed that the metropolitan area. For example, if a mobile broadcast signal is received through channel # 12, the metropolitan area, the Jeollabuk-do area, and the Busan area can be estimated as the current area. As such, the current domain may not be guaranteed to be uniquely identified. Alternatively, the current area may be identified by the geographic location acquired through the GPS receiver.

Step S120: One or more candidate neighbor frequencies for the current region are extracted by referring to the neighbor frequency table previously stored. The frequencies that are likely to be used when the mobile broadcast receiver is out of the current domain are extracted by referring to the neighbor frequency table. For example, if the mobile broadcast receiver is located in Chungcheong, candidate neighbor frequencies from the neighbor frequency table of FIG. 4 are channels # 8, # 9, and # 12. In addition, if the mobile broadcast receiver is located in Gyeongsangbuk-do, candidate neighbor frequencies from the neighbor frequency table of FIG. 4 are channels # 7, # 11, and # 13.

In this case, it is preferable to perform the process of extracting candidate adjacent frequencies for the current region before identifying the deviation of the reception region in terms of response speed. However, even if the candidate neighboring frequency is extracted after the reception area deviation is identified, there is nothing wrong with the operation of the present invention.

Step S130: The mobile broadcast receiving apparatus identifies a departure area deviation for the current area. In general, when the reception strength (RSSI) of the broadcast signal is gradually weakened to the extent that normal broadcast reception is no longer possible, it may be determined that the reception area is out of range. In the mobile broadcasting field, the identification of the deviation of the receiving area is a technique for the governor, and thus, a detailed description thereof will be omitted.

Step S140: When the mobile broadcast reception device identifies a deviation from the reception area, the mobile broadcast reception device performs channel scanning on the candidate neighbor frequency identified above. For example, if the mobile broadcast receiver is located in Chungcheong-do, channel scanning is performed on candidate adjacent frequency channels # 8, # 9, and # 12 for departure from the reception area. Similarly, if the mobile broadcast receiver is located in Gyeongsangbuk-do, channel scanning is performed on candidate neighboring frequency channels # 7, # 11, and # 13 for departure from the reception area.

In this case, when channel deviation occurs, channel scanning may be selectively performed on some candidate neighbor frequencies displayed in the neighbor frequency table without performing channel scanning on all frequencies. Compared to the conventional technique of performing channel scanning on the entire frequency, the channel list can be completed in a relatively short time since the channel scanning is performed in a relatively small number of times, thereby shortening the broadcast reception and TPEG data truncation time.

FIG. 5 is a flowchart illustrating a channel scanning process according to a second embodiment in which a broadcast reception device generates a neighbor frequency table in real time and utilizes the same in a channel scanning process according to the present invention.

Step S200: First, identify the first channel list used by the mobile broadcast reception device for mobile broadcast reception at the current location. Through this process, one or more frequency channels included in the first channel list may be formed. For example, if the mobile broadcast receiver was in the metropolitan area, the first channel list would consist of channels # 8 and # 12. The user may be located at the boundary of the receiving area. If the mobile broadcasting receiver is halfway between the metropolitan area and Gangwon-do, the first channel list may consist of channels # 8, # 12, and # 13.

Step S210: Identify the current region that is currently receiving the mobile broadcast normally. Preferably, the current area may be identified from the frequency channel through which the current mobile broadcast signal is effectively received, that is, the first channel list identified in step S200. For example, if mobile broadcast signals are received through channels # 8 and # 12, it can be assumed that the metropolitan area. For example, if a mobile broadcast signal is received through channel # 12, the metropolitan area, the Jeollabuk-do area, and the Busan area can be estimated as the current area. As such, the current domain may not be guaranteed to be uniquely identified. Alternatively, the current area may be identified by the geographic location acquired through the GPS receiver.

On the other hand, since the second embodiment of FIG. 5 is a method of acquiring and operating information in real time, in step S210, where is the current domain to which the mobile broadcast receiver belongs and which frequency channel is used in the current region? There is no need to be limited to what you need to know exactly. Since the mobile broadcast is being received, it will now belong somewhere in the receiving area, and the second embodiment can operate even if the current area is identified only to what frequency channel it seems to use.

Step S220: Initialize and set a candidate neighbor frequency to store channels estimated to be neighbor frequencies for the currently identified current region. As an example, the candidate neighbor frequency may be cleared and cleared. As another example, the mobile broadcast receiver may copy a frequency channel of a reception area just moved. Each time a channel estimated to be adjacent frequency is found through the following process, one will be added to the candidate adjacent frequency.

Steps S230 and S240: The mobile broadcast reception apparatus performs channel scanning on the entire frequency band received at the position where the mobile broadcast reception apparatus is placed to identify the second channel list in which the broadcast signal is effectively received. The process of step S230 is preferably performed in the background using a separate tuner so as not to affect the mobile broadcast reception work performed in the mainstream. In addition, it is desirable to continuously carry out the monitoring so as not to miss the situation change.

If a channel not included in the first channel list is found in the identified second channel list, it is added to the candidate neighbor frequency. It is assumed that this found channel is very likely to be adjacent frequency to the current region. The process of steps S230 and S240 is continuously performed while the mobile broadcast receiver is in the current region in order to find an adjacent frequency.

The operation performed through the steps S230 and S240 will be described in more detail with reference to FIG. 6. 6 is a view showing the concept of the adjacent frequency according to the present invention, assuming that the current region more than one side A zone 110, the B zone 120 and the C zone 130 adjacent to this state Indicates. Referring to the example of FIG. 3, it may be said that the A region 110, the B region 120, and the C region 130 correspond to the metropolitan region, the Gangwon-do region, and the Chungcheong-do region, respectively.

First, a case in which the mobile broadcast receiving device 100 moves from the A region 110 to the B region 120 through the (ab) overlapping region will be described.

While in the A region 110, the mobile broadcast reception device 100 obtains a first channel list including channels # 8 and # 12 through step S200. Subsequently, the mobile broadcast receiving apparatus 100 performs channel scanning on all frequency bands that can be received according to the technical standard while passing through the overlapping region (ab). Since the A and B regions 110 and 120 overlap, the second channel list including the channels # 8, # 12, and # 13 is obtained through channel scanning for the entire frequency band.

The mobile broadcast reception apparatus 100 estimates channel # 13 as an adjacent frequency by comparing the first channel list with the second channel list and adds the candidate channel to the candidate neighbor frequency. If the mobile broadcast reception apparatus 100 leaves the A region 110 and completely moves to the B region 120, only the channel # 13 included in the candidate neighboring frequency does not need to perform channel scanning for all frequencies. This is done by channel scanning.

Next, the mobile broadcast receiving device 100 will usually look at the case of moving only to the A-zone 110 and the B-zone 120, this time moving from the A-zone 110 to the C-zone 130.

Through the above process, channel # 13 is stored in the candidate adjacent frequency. In this state, if the mobile broadcast reception device 100 moves from the A region 110 to the C region 130, (ac) channel scanning for the entire frequency band performed by the mobile broadcast receiving apparatus 100 in the overlapping region is performed. Through this, a second channel list including channels # 8, # 11, and # 12 is obtained. Channels # 11 other than channels # 8 and # 12 common to the first channel list are added to the candidate neighbor frequency. The mobile broadcast reception device 100 recognizes that another adjacent frequency # 11 is additionally found in addition to the existing channel # 13.

Steps S250 and S260: When the mobile broadcast reception apparatus identifies a deviation from the reception area, the mobile broadcast reception apparatus performs channel scanning on a channel belonging to a candidate neighboring frequency. That is, in the example of FIG. 6, the mobile broadcast reception apparatus 100 first searches for channels # 11 and # 13 stored in candidate adjacent frequencies when the mobile station 100 receives a deviation from the reception zone from the A zone 110. Whether the mobile broadcast receiving device 100 moves to the B region 120 or the C region 130, the handover may be quickly achieved.

Step S270: The mobile broadcast reception device maps the candidate neighbor frequencies to the current domain and stores them in the neighbor frequency table. That is, in the example of FIG. 6, candidate neighbor frequencies, channels # 11, and # 13, which have been stored for the A region 110 which is the current region, are mapped to each other and stored in the neighbor frequency table. This process is continuously performed while the mobile broadcast receiving apparatus moves, and when the result is updated in the adjacent frequency table, the table of FIG. 4 can be constructed.

FIG. 7 is a flowchart illustrating an embodiment of identifying, in the present invention, a current zone in which a mobile broadcast receiving device is currently receiving mobile broadcasts. The process of FIG. 7 corresponds to step S110 and step S210 in the entire process of FIGS. 2 and 5, respectively.

Step S300: First, the mobile broadcast receiving apparatus identifies channel allocation information for a plurality of receiving areas. That is, to identify which receiving zone is defined in the mobile broadcasting standard currently used and which channel is set for each receiving zone, conceptually identifying the information of FIG. 3. Since this information is stored in advance in the mobile broadcast receiving device, step S300 corresponds to a process of loading the corresponding information from the storage device (eg, flash memory).

In consideration of the technical idea of the first embodiment, the information needs to be correctly identified in step S300 in relation to step S110. On the other hand, considering the technical idea of the second embodiment, the corresponding information is not correctly identified in step S300, old information before updating is identified, or even what frequency channel is used for each receiving area through real-time monitoring. Even if the same degree of information is identified, the second embodiment is operable.

Steps S310 and S320: identify a current valid channel, that is, a current valid channel which is a frequency channel through which the mobile broadcast receiver can effectively receive a mobile broadcast signal at the current location. That is, it is to identify through which frequency channel the mobile broadcast signal can be effectively received at the current location.

Then, the current valid channel is compared with the channel assignment information for the receiving area identified above. That is, at least one receiving area having channel allocation information corresponding to the current valid channel is set as the current area. For example, if mobile broadcast signals are received through channels # 8 and # 12, it can be assumed that the metropolitan area. For example, if a mobile broadcast signal is received through channel # 12, the metropolitan area, the Jeollabuk-do area, and the Busan area can be estimated as the current area.

FIG. 8 is a flowchart illustrating a process of refining current area identification results in the present invention. Through the process shown in FIG. 7, the identification result of the current region to which the mobile broadcast reception apparatus currently belongs can be obtained. However, since the above identification results are vulnerable to errors, it is preferable to refine the identification results through the following steps (S410) to (S440).

The process used in FIG. 8 is a method of utilizing metadata included in the mobile broadcast signal. In general, metadata such as an ensemble ID (EID), a service ID (SID), and a service label are set in the mobile broadcast signal to inform what the broadcast stream is. Some documents use the term system information (SI), but the term metadata is used herein. 9 illustrates an example of metadata setting according to a receiving area. The metadata setting in the TDMB mobile broadcast for the MBC broadcasting channel is illustrated.

First, the process of the above [Fig. 7] is described incomplete. For example, it is assumed that the channel is located in the metropolitan area due to a problem in the performance of a broadcast receiver or a radio wave environment, but only channel # 12 is received, not channel # 8. Since only the current effective channel # 8 corresponds to both the Seoul metropolitan area and Busan, the metropolitan area and the Busan area are derived from the current area in FIG. 7. Therefore, the channel scanning of both the adjacent frequencies (channels # 11, # 13) for the metropolitan area and the adjacent frequencies (channels # 7, # 9) for the Busan area should be performed for the reception area departure.

In the process of FIG. 8, the metadata (EID, SID, Service Label) is checked from the channel list received from the current effective channel # 12, and the current region is located in the metropolitan area and the Busan area derived from FIG. 7. Identify it. In addition, if it is confirmed through the process of FIG. 8 that the current area is the metropolitan area, the mobile broadcast receiver may recognize that it has not received the frequency channel # 8 due to an error, and may retry channel scanning. have.

Step S410: First, metadata allocation information as shown in FIG. 9 is identified for the plurality of receiving areas.

Step S420: The metadata is extracted from the mobile broadcast signal currently validly received through the current valid channel. The metadata may include an Ensemble ID (EID), a Service ID (SID), a Service Label, and the like, and may refer to only one, but preferably refer to a plurality of metadata.

Steps S430 and S440: A receiving region having metadata allocation information corresponding to the extracted metadata is selected from one or more receiving regions identified as the current region through the process of FIG. 7, and the selected reception is performed. Reset the domain to the current domain. In practice, the process of [FIG. 8] will be meaningful when a plurality of receiving areas are derived from [FIG. 7]. If the single receiving area is derived from [FIG. 7], the process of [FIG. 8] verifies this. Corresponds to.

Referring to the example of FIG. 9, the metropolitan area and the Busan area were derived as the current area through the process of FIG. 7. In reality, since the mobile broadcasting receiver is located in the metropolitan area, EID (E042), SID (F1E00420), and Service Label (my MBC) will be extracted as metadata. From this, the metropolitan area and the Busan area can be judged as the current area.

On the other hand, it is preferable to perform the process of FIG. 8 only for the reception area derived as the current region through the process of FIG.

Meanwhile, the present invention may be embodied in the form of computer readable codes on a computer readable nonvolatile recording medium. Such nonvolatile recording media include all types of storage devices that store computer readable data, such as hard disks, SSDs, CD-ROMs, NAS, magnetic tapes, web disks, cloud disks, etc. The code may be implemented in a form in which the code is distributed and stored in a storage device.

Claims (6)

delete A channel scanning method performed by a mobile broadcast receiving apparatus to manage a channel list in real time in a mobile broadcast receiving environment having a plurality of receiving areas and to perform a handover in response to the departure of the receiving area.
A first step of identifying a first channel list used for mobile broadcast reception at a current location;
Estimating one or more current zones currently receiving mobile broadcasts based on the first channel list;
A third step of initializing and setting a candidate neighbor frequency;
A fourth step of continuously performing channel scanning on the entire frequency band in a background operation using a separate tuner to identify a second channel list in which a broadcast signal is effectively received;
A fifth step of estimating an adjacent frequency for the current region and adding it to the candidate adjacent frequency when a channel that is not included in the first channel list is found in the second channel list;
A sixth step of continuously carrying out the fourth step and the fifth step until a reception area departure occurs;
A seventh step of identifying a territorial deviation;
An eighth step of first performing channel scanning on at least one channel included in the candidate neighbor frequency to perform a handover corresponding to the identified out-of-area deviation;
Channel scanning method for channel list management in the mobile broadcast reception comprising a.
The method according to claim 2,
After the eighth step,
A ninth step of mapping the candidate neighbor frequency to the current domain and storing the candidate neighbor frequency in an adjacent frequency table;
Channel scanning method for channel list management in the mobile broadcast receiving, characterized in that further comprises.
The method according to claim 2,
The second step,
A step of identifying channel allocation information for the plurality of receiving areas;
B) identifying a current valid channel which is a frequency channel in which the mobile broadcast signal is effectively received in the current reception area;
C) setting at least one receiving area having channel allocation information corresponding to the current valid channel as the current area;
Channel scanning method for channel list management in the mobile broadcast reception comprising a.
The method according to claim 4,
The second step,
Carried out after the step c,
D) identifying metadata allocation information for the plurality of receiving areas;
Extracting metadata of at least one of an Ensemble ID (EID), a Service ID (SID), and a Service Label from the currently validly received mobile broadcast signal;
Selecting a receiving area having metadata allocation information corresponding to the metadata extracted in step e from among at least one receiving area identified as the current area in step c;
G) resetting the selected receiving area to the current area;
Channel scanning method for channel list management in the mobile broadcast receiving, characterized in that further comprises.
A computer-readable nonvolatile recording medium having recorded thereon a program for executing a channel scanning method for channel list management in mobile broadcast reception according to any one of claims 2 to 5.

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