KR102686805B1 - Apparatus and method for providing service handoff - Google Patents

Abstract

An apparatus and method for providing service handoff are disclosed. A method of providing a service handoff according to an embodiment of the present invention includes the steps of: receiving a broadcast signal for providing a broadcast service in a broadcast reception area of the current location of a user; Processing service handoff information included in the broadcast signal and providing the broadcast service using the broadcast signal, and when the broadcast service is outside the broadcast reception area, using the service handoff information to provide the broadcast service. It includes the step of continuously providing broadcasting services.

Description

Apparatus and method for providing service handoff {APPARATUS AND METHOD FOR PROVIDING SERVICE HANDOFF}

The present invention relates to broadcast service provision technology, and more specifically, to service handoff technology for linking identical or similar services by linking broadcast services.

Standardization and technology development for next-generation broadcasting systems are accelerating, and these next-generation broadcasting systems are being promoted in the form of providing UHD content with a resolution more than four times that of existing HD resolution.

In particular, the broadcasting standards of these next-generation broadcasting systems are being standardized for specifications (Signaling, Delivery, Synchronization, and Error Protection, A/332) to provide related signaling information.

Signaling information includes low level signaling (LLS) and service layer signaling (SLS) necessary for service acquisition of broadcasting services, and the receiving end uses the signaling information to broadcast the transmitting end. Services can be identified.

Meanwhile, Korea Patent Publication No. 10-2017-0057978 “Method for transmitting signaling data for hybrid broadcasting service and device using the same” generates signaling data to provide broadcasting services in a hybrid broadcasting environment using digital broadcasting networks and communication networks, Disclosed is a signaling data transmission technology for a hybrid broadcast service transmitted through components.

The purpose of the present invention is to provide a service handoff function that allows broadcasting services to be automatically continued when moving to a minimum area.

Additionally, the present invention aims to solve the inconvenience of reselecting a channel when moving from one area to another in a mobile broadcasting environment.

In addition, the purpose of the present invention is to automatically link and continuously provide the same or similar broadcasting service.

In addition, the purpose of the present invention is to provide convenience to drivers through continuous provision of broadcasting services and to ensure driver safety.

A method of providing service handoff according to an embodiment of the present invention to achieve the above object is a method of providing service handoff by a service handoff providing device, in the broadcast reception area of the current location of the user, for providing broadcast service. Receiving a broadcast signal; Processing service handoff information included in the broadcast signal and providing the broadcast service using the broadcast signal, and when the broadcast service is outside the broadcast reception area, using the service handoff information to provide the broadcast service. It includes the step of continuously providing broadcasting services.

At this time, the broadcast signal may include the broadcast reception area, at least one adjacent broadcast reception area adjacent to the broadcast reception area, and service handoff information of a broadband network including the broadcast reception area.

At this time, the step of processing the service handoff information may extract service handoff information included in the USBD (User Service Bundle Description) of service layer signaling information from the broadcast signal.

At this time, the step of processing the service handoff information refers to the service handoff information of the broadcast reception area, and determines which one of broadcast service provision through the broadcast reception area and broadcast service provision through the broadband network. You can decide how to provide it.

At this time, the step of continuously providing the broadcast service is to leave the first broadcast reception area for receiving the broadcast service and enter the second broadcast reception area, by using the service handoff information to enter the second broadcast reception area. The broadcast service can be continuously provided by receiving a broadcast signal corresponding to the broadcast service.

At this time, the step of continuously providing the broadcast service corresponds to the broadcast service in the second broadcast reception area by referring to the identifier, frequency, broadcaster identifier, and linked service type of the broadcast service included in the service handoff information. The broadcasting service can be continuously provided by receiving a broadcasting signal.

At this time, the step of continuously providing the broadcast service is performed when the reception state of the broadcast signal does not correspond to the broadcast signal reception conditions for providing the broadcast service, using the service handoff information to broadcast the broadcast through a broadband network. Services can be continuously provided.

At this time, the step of continuously providing the broadcast service refers to the broadband network address and linked service type included in the service handoff information, during streaming and downloading of the broadcast service from the broadband network address that provides the broadcast service. The broadcast service can be continuously provided using either one.

At this time, in the step of continuously providing the broadcast service, if the reception state of the broadcast signal does not correspond to the broadcast signal reception conditions for providing the broadcast service, the broadcast service is provided in the broadcast reception area using the service handoff information. The broadcaster identifier and the linked service type of the first broadcast service in progress are the same, and the second broadcast service can be provided by changing to a second broadcast service with a different frequency identifier.

At this time, the step of continuously providing the broadcast service is to check whether the broadcast signal reception conditions of the broadcast signal providing the second broadcast service correspond, and only if the broadcast signal reception conditions are matched, the second broadcast When changing to a service, and the broadcast signal providing the first broadcast service matches the broadcast signal reception conditions, the second broadcast service can be changed back to the first broadcast service.

In addition, a service handoff providing device according to an embodiment of the present invention for achieving the above object includes a receiving unit that receives a broadcast signal for providing a broadcast service in a broadcast reception area of the user's current location; Process the service handoff information included in the broadcast signal, provide the broadcast service using the broadcast signal, and, when outside the broadcast reception area for receiving the broadcast service, use the service handoff information to provide the broadcast service. It includes a service handoff processing unit that continuously provides the service and a broadcast processing unit that receives the broadcast service through a broadband network based on the service handoff information.

At this time, the broadcast signal may include the broadcast reception area, at least one adjacent broadcast reception area adjacent to the broadcast reception area, and service handoff information of a broadband network including the broadcast reception area.

At this time, the service handoff processor may extract service handoff information included in the USBD (User Service Bundle Description) of service layer signaling information from the broadcast signal.

At this time, the service handoff processing unit refers to the service handoff information of the broadcast reception area, provides broadcast services through the adjacent broadcast reception area capable of providing broadcast services in the broadcast reception area, and establishes the broadband network. One of the broadcasting service provision methods can be determined.

At this time, when the service handoff processor leaves the first broadcast reception area for receiving the broadcast service and enters the second broadcast reception area, the service handoff processing unit uses the service handoff information to broadcast the broadcast in the second broadcast reception area. The broadcast service can be continuously provided by receiving a broadcast signal corresponding to the service.

At this time, the service handoff processing unit refers to the identifier, frequency, broadcaster identifier, and linked service type of the broadcast service included in the service handoff information, and generates a broadcast signal corresponding to the broadcast service in the second broadcast reception area. By receiving, the broadcast service can be continuously provided.

At this time, the service handoff processing unit determines that the reception state of the broadcast signal does not correspond to the broadcast signal reception conditions for providing the broadcast service, and uses the service handoff information to receive the broadcast service through a broadband network. You can judge whether it is possible or not.

At this time, the broadcast processing unit provides the broadcast service using either a streaming service or a download service from a streaming server that provides the broadcast service corresponding to the broadband network address and linked service type included in the service handoff information. It can be provided.

At this time, if the reception state of the broadcast signal does not correspond to the broadcast signal reception conditions for providing the broadcast service, the service handoff processing unit uses the service handoff information to The broadcaster identifier and the linked service type of the broadcast service are the same, and the second broadcast service can be provided by changing to a second broadcast service with a different frequency identifier.

At this time, the service handoff processing unit checks whether the broadcast signal reception conditions of the broadcast signal providing the second broadcast service correspond, and changes to the second broadcast service only if it corresponds to the broadcast signal reception conditions. And, when the broadcast signal providing the first broadcast service matches the broadcast signal reception conditions, the second broadcast service can be changed back to the first broadcast service.

The present invention can provide a service handoff function that allows broadcasting services to be automatically continued when moving to a minimum area.

Additionally, the present invention can solve the inconvenience of reselecting a channel when moving from one area to another in a mobile broadcasting environment.

In addition, the present invention can automatically link and continuously provide the same or similar broadcasting service.

In addition, the present invention can provide convenience to drivers and ensure driver safety by continuously providing broadcasting services.

Figure 1 is a diagram showing movement between broadcast reception areas including a broadband network of a receiving vehicle in a mobile broadcast reception environment according to an embodiment of the present invention.
Figure 2 is a block diagram showing a service handoff providing device that transmits a broadcast signal according to an embodiment of the present invention.
Figure 3 is a block diagram showing a service handoff providing device that receives a broadcast signal according to an embodiment of the present invention.
Figure 4 is an operation flowchart showing a method for providing service handoff by transmitting a broadcast signal according to an embodiment of the present invention.
Figure 5 is an operation flowchart showing a method of providing service handoff for receiving a broadcast signal according to an embodiment of the present invention.
Figure 6 is a diagram showing a service layer signaling structure applying the ROUTE protocol according to an embodiment of the present invention.
Figure 7 is a diagram showing a service layer signaling structure applying the MMT protocol according to an embodiment of the present invention.
Figure 8 is a diagram showing the USBD data format and structure, which is service signaling information applying the ROUTE protocol according to an embodiment of the present invention.
Figures 9 to 13 are diagrams showing the USBD data format and structure, which is service signaling information applying the MMT protocol according to an embodiment of the present invention.
Figure 14 is a diagram showing a data format for service handoff according to an embodiment of the present invention.
Figure 15 is a diagram showing handoff information corresponding to the same or similar service within the same RF band in the data format for service handoff according to an embodiment of the present invention.
Figure 16 is a diagram showing an MMTP/ROUTE-based service transmission structure according to an embodiment of the present invention.
FIG. 17 is a diagram illustrating in detail an example of the service #1 service layer signaling structure shown in FIG. 16.
FIG. 18 is a diagram illustrating in detail an example of the service #2 service layer signaling structure shown in FIG. 16.
Figure 19 is a diagram showing a computer system according to an embodiment of the present invention.

The present invention will be described in detail with reference to the attached drawings as follows. Here, repeated descriptions, known functions that may unnecessarily obscure the gist of the present invention, and detailed descriptions of configurations are omitted. Embodiments of the present invention are provided to more completely explain the present invention to those skilled in the art. Accordingly, the shapes and sizes of elements in the drawings may be exaggerated for clearer explanation.

Throughout the specification, when a part “includes” a certain element, this means that it may further include other elements rather than excluding other elements, unless specifically stated to the contrary.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings.

Figure 1 is a diagram showing movement between broadcast reception areas including a broadband network of a receiving vehicle in a mobile broadcast reception environment according to an embodiment of the present invention.

Referring to FIG. 1, the service handoff providing device according to an embodiment of the present invention can receive broadcast signals through a broadband network when the reception status of the broadcast service provided using service handoff information is not good. there is. At this time, the streaming device continues to provide the broadcast service by streaming or downloading the broadcast service using the URL address (e.g., http://download.tsi.abc1.co.kr/abcdacu1.mpd) that provides the broadcast service. can do.

At this time, the receiver can tune the broadcast in an adjacent area and link the corresponding service with the same service or a similar service, thereby relieving the inconvenience while driving for the moving user. This concept is called service handoff. As shown in FIG. 1, it can be seen that an example of service handoff occurs in the user's terminal moving from the CH 52 broadcasting network to the CH 53 broadcasting network. At this time, the receiver automatically detects signals in adjacent areas and, if the same or similar service is provided, can continue to provide the service by linking to that service.

At this time, the receiver must transmit the neighboring area information as signaling information through a broadcasting network, and related neighboring information can be transmitted. If the receiver cannot secure a service to connect through an adjacent area and the broadcaster provides a streaming service through the Internet (broadband) network, the URL information can be used to provide streaming or content that provides the same or similar service. Services can be continued by linking them.

In order to make the above-mentioned concept possible, linkage information related to services that require linkage to adjacent broadcasting areas or streaming services must be configured and transmitted through a broadcasting network. The information transmitted through the broadcasting network may be service signaling information, and the information may be configured and transmitted in various forms, but in the present invention, it is used in the USBD (User Service Bundle Description) specified in the ATSC 3.0 Service Layer Signaling (SLS) standard. We would like to explain how to transmit service handoff information, including:

Figure 2 is a block diagram showing a service handoff providing device that transmits a broadcast signal according to an embodiment of the present invention.

Referring to FIG. 2, a service handoff providing device that transmits a broadcast signal according to an embodiment of the present invention includes a service handoff information generation unit 11, a broadcast signal generation unit 12, and a communication unit 13. .

The service handoff information generator 11 may generate service handoff information for a broadcast service.

Service handoff may be called service handover or service following.

Service handoff information may include information necessary to continuously provide services by automatically connecting to the same or similar service through another area or broadband when a user moves from area to area or is located in a shadow area in a broadcasting environment.

At this time, the service handoff information may include the broadcast service identifier, frequency, broadcaster identifier, linked service type, and broadband network address.

At this time, the service handoff information generator 11 further generates the broadcast reception area, at least one adjacent broadcast reception area adjacent to the broadcast reception area, and service handoff information of the broadband network including the broadcast reception area. It may be possible.

At this time, the service handoff information generator 11 may include the service handoff information in the USBD (User Service Bundle Description) of the service layer signaling information in the broadcast signal.

The broadcast signal generator 12 may generate a broadcast signal for a broadcast service that can be provided by a broadcaster in the current broadcast reception area.

At this time, the broadcast signal generator 12 may receive service handoff information and generate a broadcast signal including the service handoff information.

The communication unit 13 may transmit a broadcast signal including service handoff information in the current broadcast reception area.

Figure 3 is a block diagram showing a service handoff providing device that receives a broadcast signal according to an embodiment of the present invention.

Referring to FIG. 3, the service handoff providing device for receiving a broadcast signal according to an embodiment of the present invention includes a physical layer receiving unit 110, a service handoff processing unit 120, a service handoff database unit 130, and a broadband unit. It includes a processing unit 140 and an output unit 150.

The physical layer receiving unit 110 may include a tuner unit 111 and a baseband processing unit 112.

The tuner unit 111 may receive a broadcast signal for providing a broadcast service in the broadcast reception area of the user's current location.

For example, the tuner unit 111 may receive an ATSC 3.0 broadcast signal transmitted from an antenna and then detect the corresponding RF signal.

At this time, the broadcast signal may include the broadcast reception area, at least one adjacent broadcast reception area adjacent to the broadcast reception area, and service handoff information of a broadband network including the broadcast reception area.

The baseband processing unit 112 can extract service handoff information from the broadcast signal.

At this time, the baseband processing unit 112 may transmit the broadcast signal and the service handoff information extracted from the broadcast signal to the service handoff processing unit 120.

The service handoff processing unit 120 may process service handoff information included in the broadcast signal.

At this time, the service handoff information may include the broadcast service identifier, frequency, broadcaster identifier, linked service type, and broadband network address.

At this time, the service handoff processing unit 120 refers to the service handoff information of the broadcast reception area, provides broadcast services through the adjacent broadcast reception area capable of providing broadcast services provided by the broadcast reception area, and provides the broadcast service through the broadband. One of the broadcasting service provision methods through the network can be determined.

At this time, the service handoff processing unit 120 receives USBD (User Service Bundle Description) data among service layer signaling information from the broadcast signal, extracts the service handoff information specified in the HandoffServices element, configures a database, and configures the service handoff processing unit 120. It can be stored in the off database unit 130.

At this time, when the service handoff processing unit 120 is outside the broadcast reception area where the broadcast service is received, it can continue to provide the broadcast service using the service handoff information.

The broadband processing unit 140 may receive broadcast services from the streaming server 200 through a broadband network.

At this time, when the service handoff processing unit 120 leaves the first broadcast reception area for receiving the broadcast service and enters the second broadcast reception area, the service handoff processing unit 120 uses the service handoff information to enter the second broadcast reception area. The broadcast service can be continuously provided by receiving a broadcast signal corresponding to the broadcast service.

At this time, the service handoff processing unit 120 refers to the identifier, frequency, broadcaster identifier, and linked service type of the broadcast service included in the service handoff information, and selects the broadcast service corresponding to the broadcast service in the second broadcast reception area. By receiving a broadcast signal, the broadcast service can be continuously provided.

At this time, if the reception state of the broadcast signal does not correspond to the broadcast signal reception conditions for providing the broadcast service, the service handoff processing unit 120 uses the service handoff information to provide the broadcast service through a broadband network. can be provided continuously.

At this time, the broadcast signal reception conditions for providing the broadcast service are those that can normally receive the broadcast signal, such as that the broadcast signal can be received within a preset time or that noise less than a preset value is detected in the broadcast signal. It can correspond.

At this time, the broadband processing unit 140 uses one of a streaming service and a download service from a streaming server that provides the broadcast service corresponding to the broadband network address and linked service type included in the service handoff information to provide the broadcast service. can be provided.

At this time, if the reception state of the broadcast signal does not correspond to the broadcast signal reception conditions for providing the broadcast service, the service handoff processing unit 120 uses the service handoff information to determine the broadcast signal reception condition being provided in the broadcast reception area. The broadcaster identifier and the linked service type of the first broadcast service are the same, and the second broadcast service can be provided by changing to a second broadcast service with a different frequency identifier.

At this time, the service handoff processing unit 120 checks whether the broadcast signal reception conditions of the broadcast signal providing the second broadcast service correspond, and only if the broadcast signal reception condition corresponds to the broadcast signal providing the second broadcast service. , and when the broadcast signal providing the first broadcast service matches the broadcast signal reception conditions, the second broadcast service can be changed back to the first broadcast service.

For example, the service handoff processing unit 120 may provide a broadcast service that is the same or similar to the UHD broadcast service in the same broadcast reception area, but only at a different frequency (channel) from the same broadcaster.

At this time, if the UHD broadcasting service reception condition is poor, the service handoff processing unit 120 can provide the broadcasting service by changing to the same or similar HD broadcasting service using the service handoff information, and may provide the broadcasting service by using the service handoff information. If is normalized, you can change from HD broadcasting service to UHD broadcasting service again.

At this time, when the service handoff is operated through a broadband network, the broadband processing unit 140 may perform a function of downloading related streaming from the streaming server 200 by accessing the address through the broadband network.

The streaming server 200 is a server that exists on a broadband network and can provide broadcast service data requiring service handoff to the service handoff providing device 100.

At this time, the streaming server 200 may provide content provision methods such as a file download service as well as a streaming service.

The output unit 150 can output a broadcast service to a user.

At this time, the output unit 150 can output the broadcast service through the display.

At this time, the output unit 150 may transmit a broadcast service to the user's terminal device.

Figure 4 is an operation flowchart showing a method for providing service handoff by transmitting a broadcast signal according to an embodiment of the present invention.

Referring to FIG. 4, the method for providing service handoff by transmitting a broadcast signal according to an embodiment of the present invention may first generate service handoff information (S210).

That is, step S210 may generate service handoff information for a broadcast service.

Service handoff may be called service handover or service following.

Service handoff information may include information necessary to continuously provide services by automatically connecting to the same or similar service through another area or broadband when a user moves from area to area or is located in a shadow area in a broadcasting environment.

At this time, the service handoff information may include the broadcast service identifier, frequency, broadcaster identifier, linked service type, and broadband network address.

At this time, step S210 may further generate service handoff information of the broadcast reception area, at least one adjacent broadcast reception area adjacent to the broadcast reception area, and a broadband network including the broadcast reception area.

At this time, step S210 may include service handoff information in the USBD (User Service Bundle Description) of service layer signaling information in the broadcast signal.

Additionally, the service handoff providing method for transmitting a broadcast signal according to an embodiment of the present invention can generate a broadcast signal (S220).

That is, step S220 can generate a broadcast signal for a broadcast service that can be provided by a broadcaster in the current broadcast reception area.

At this time, step S220 may receive service handoff information and generate a broadcast signal including the service handoff information.

Additionally, the service handoff providing method for transmitting a broadcast signal according to an embodiment of the present invention can transmit a broadcast signal (S230).

That is, step S230 may transmit a broadcast signal including service handoff information in the current broadcast reception area.

Figure 5 is an operation flowchart showing a method of providing service handoff for receiving a broadcast signal according to an embodiment of the present invention.

Referring to FIG. 5, the service handoff providing method for receiving a broadcast signal according to an embodiment of the present invention may first receive the broadcast signal (S310).

That is, in step S310, a broadcast signal for providing a broadcast service can be received in the broadcast reception area of the user's current location.

For example, step S310 may detect the corresponding RF signal after receiving the ATSC 3.0 broadcast signal transmitted from the antenna.

At this time, the broadcast signal may include the broadcast reception area, at least one adjacent broadcast reception area adjacent to the broadcast reception area, and service handoff information of a broadband network including the broadcast reception area.

At this time, step S310 may extract service handoff information from the broadcast signal.

At this time, step S310 may transmit the broadcast signal and the service handoff information extracted from the broadcast signal to the service handoff processor 120.

Additionally, the method for providing service handoff by receiving a broadcast signal according to an embodiment of the present invention can process service handoff information (S320).

That is, step S320 may process service handoff information included in the broadcast signal.

At this time, the service handoff information may include the broadcast service identifier, frequency, broadcaster identifier, linked service type, and broadband network address.

At this time, step (S320) refers to the service handoff information of the broadcast reception area, provides broadcast services through the adjacent broadcast reception area capable of providing broadcast services provided by the broadcast reception area, and provides broadcast services through the broadband network. Among the broadcast service provision methods, one broadcast service provision method can be determined.

At this time, step S320 receives USBD (User Service Bundle Description) data among the service layer signaling information from the broadcast signal, extracts the service handoff information specified in the HandoffServices element, configures a database, and creates a service handoff database unit. It can be saved at (130).

Additionally, the method for providing a service handoff for receiving a broadcast signal according to an embodiment of the present invention can provide a broadcast service (S330).

That is, step S330 may provide a broadcast service to the user.

At this time, in step S330, when the broadcast service is received out of the broadcast reception area, the broadcast service can be continuously provided using service handoff information.

At this time, in step S330, when leaving the first broadcast reception area for receiving the broadcast service and entering the second broadcast reception area, the broadcast service is provided in the second broadcast reception area using the service handoff information. The broadcast service can be continuously provided by receiving a broadcast signal corresponding to .

At this time, step S330 refers to the identifier, frequency, broadcaster identifier, and linked service type of the broadcast service included in the service handoff information, and transmits a broadcast signal corresponding to the broadcast service in the second broadcast reception area. By receiving the broadcast service, the broadcast service can be continuously provided.

At this time, in step S330, if the reception state of the broadcast signal does not correspond to the broadcast signal reception conditions for providing the broadcast service, the broadcast service is continuously provided through the broadband network using the service handoff information. can do.

At this time, the broadcast signal reception conditions for providing the broadcast service are those that can normally receive the broadcast signal, such as that the broadcast signal can be received within a preset time or that noise less than a preset value is detected in the broadcast signal. It can correspond.

At this time, step (S330) uses either a streaming service or a download service of the broadcast service from a streaming server that provides the broadcast service corresponding to the broadband network address and linked service type included in the service handoff information. The above broadcasting service can be continuously provided.

At this time, in step S330, if the reception state of the broadcast signal does not correspond to the broadcast signal reception conditions for providing the broadcast service, the first broadcast being provided in the broadcast reception area is performed using the service handoff information. The second broadcast service can be provided by changing the service to a second broadcast service in which the broadcaster identifier and the linked service type are the same and the frequency identifier is different.

At this time, step S330 checks whether the broadcast signal reception conditions of the broadcast signal providing the second broadcast service correspond, and changes to the second broadcast service only if it corresponds to the broadcast signal reception conditions. , when the broadcast signal providing the first broadcast service matches the broadcast signal reception conditions, the second broadcast service can be changed back to the first broadcast service.

For example, in step S330, an HD broadcasting service that is the same or similar to a UHD broadcasting service in the same broadcasting reception area may be provided by the same broadcaster with a different frequency (channel).

At this time, in step S330, if the reception status of the UHD broadcasting service is poor, the broadcasting service can be provided by changing to the same or similar HD broadcasting service using the service handoff information, and the reception status of the UHD broadcasting service is normalized. In this case, it is possible to change back from HD broadcasting service to UHD broadcasting service.

At this time, step S330 may perform a function of downloading related streaming from the streaming server 200 by accessing the address through the broadband network when the service handoff is operated through the broadband network.

At this time, in step S330, the streaming server 200 may provide service data requiring service handoff to the service handoff providing device 100 to a server existing on a broadband network.

At this time, in step S330, the streaming server 200 may provide a content provision method such as a file download service as well as a streaming service.

At this time, step S330 may output the broadcast service to the user.

At this time, step S330 may output the broadcast service through the display.

At this time, step S330 may transmit a broadcast service to the user's terminal device.

Figure 6 is a diagram showing the USBD data format and structure, which is service signaling information applying the ROUTE protocol according to an embodiment of the present invention.

Referring to FIG. 6, it can be seen that service signaling information applying the ROUTE protocol according to an embodiment of the present invention is shown. User service information USBD (User Service Bundle Description), S-TSID (Service-based Transport of Service Instance Description) corresponding to data transfer session information, MPD (Media Presentation Description) required for ROUTE service, and description for app service ( You can see that it contains descriptions.

At this time, service handoff information according to an embodiment of the present invention may be transmitted by being included in a USBD data fragment.

The service-related signaling information may be composed of an individual XML format or a separate package file and transmitted through a channel allocated for each service.

Figure 7 is a diagram showing the USBD data format and structure, which is service signaling information applying the MMT protocol according to an embodiment of the present invention.

Referring to FIG. 7, it can be seen that service signaling information applying the MMT protocol according to an embodiment of the present invention is shown. At this time, it can be seen that the service signaling information includes USBD, MPD, and MMT package table.

At this time, service handoff information according to an embodiment of the present invention may be transmitted and included in the USBD data structure.

Figure 8 is a diagram showing the USBD data format and structure, which is service signaling information applying the ROUTE protocol according to an embodiment of the present invention.

Referring to FIG. 8, it can be seen that the USDB data format and structure, which is service signaling information applying the ROUTE protocol, are shown. Information related to the service may include the service identifier (serviceId), service name (Name), service language (ServiceLanguage), delivery method (DeliveryMethod), broadcast app service (BroadcastAppService), and unicast app service (UnicastAppService). . The structure shown in FIG. 8 may include a HandoffServices element following the basepattern attribute, and the element may exist as a lower element of the UserServiceDescription element. Additionally, it can be configured in various forms by adding other elements. As an example, it can be located at the same level as the LinkageService element applied to domestic UHDTV broadcasting.

The HandoffServices element can be used to link a service with a streaming service through an adjacent area or broadband network when service handoff is required.

Figures 9 to 13 are diagrams showing the USBD data format and structure, which is service signaling information applying the MMT protocol according to an embodiment of the present invention.

9 to 13, as an example of the USDB data format and structure corresponding to a service applying the MMT protocol, it may be composed of various information including service identifier, name, language, genre, service description, and package identifier. there is. The HandoffServices element corresponding to the service handoff information to be disclosed in the present invention may exist as a lower element of the UserServiceDescription element. It can also be provided along with various other elements such as LinkageService element.

The detailed data structure of the HandoffServices element included in FIGS. 8 and 9 to 13 may be configured as shown in FIG. 14.

Figure 14 is a diagram showing a data format for service handoff according to an embodiment of the present invention. Figure 15 is an example of a data format for service handoff according to an embodiment of the present invention and includes handoff information to the same or similar service within the same RF band.

Referring to FIG. 14, the service list associated with the service currently being received has the HandoffServices element at the top and has serviceid, HandoffviaBroadcast element, and HandoffviaBroadband elements as attributes at the bottom. The HandoffviaBroadcast element may have frequency, bsid, handoffserviceid, or handofftype as attributes. The HandoffviaBroadband element can have handoffURL or handofftype as an attribute. The attribute value serviceid belonging to the HandoffServices element corresponds to an identifier for identifying the ATSC 3.0 service currently being received and may have a 16-bit value. The service currently being received can be identified using the serviceid.

The frequency belonging to the HandoffviaBroadcast element may represent the frequency value of an adjacent area. 'bsid' is a broadcast stream identifier and may correspond to an identifier that can identify a broadcaster. 'handoffserviceid' may indicate a serviceid within an adjacent area. Lastly, handofftype may correspond to a value that distinguishes whether the linked service is the same service or a similar service. If the value is '1', it means that it is the same service as the current service, and if it is '0', it can indicate that it is a similar service although not the same.

The HandoffviaBroadband element is used to provide linkage information for service linkage through a broadband network rather than an adjacent broadcasting network, that is, the service type linked to the URL, and can have handoffURL and handofftype as attribute values at the bottom. The handoffURL may correspond to a URL address through which a service corresponding to the service currently being received can be received through a broadband network. The handofftype may indicate the type of service associated with the same attribute as the handofftype used in the HandoffviaBroadcast element. A '1' may indicate the same service, and a '0' may indicate a similar service.

Additionally, the service can be linked to other services not only in adjacent areas but also in the same broadcasting area. As an example, the same or similar HD channel as the UHD service may be transmitted in the same area.

Referring to FIG. 15, the service handoff providing device according to an embodiment of the present invention can continue the service by providing identification information corresponding to another service within the same area.

For example, in the case of domestic terrestrial UHD broadcasting, the service handoff providing device according to an embodiment of the present invention can simultaneously transmit the same program in UHD with 4K resolution and FHD (Full High Definition) with 2K resolution.

At this time, in the case of a 4K UHD service, the service handoff providing device according to an embodiment of the present invention can transmit by applying transmission parameters that enable reception in a fixed state.

At this time, the service handoff providing device according to an embodiment of the present invention can transmit by applying transmission parameters that enable mobile reception such as a vehicle in the case of the FHD.

At this time, the service handoff providing device according to an embodiment of the present invention is capable of receiving 4K UHD when the vehicle is stationary, and automatically receives 4K when the vehicle moves and the 4K UHD reception condition deteriorates. The service can be linked to the 2K FHD program. For this user case (use case), if a HandoffviaInBand element is added to the data structure of FIG. 14 and handoffserviceid and handofftype are provided as lower attribute values, the service handoff providing device can use this to link to other services provided in the same area. You can. In this case, the service handoff providing device according to an embodiment of the present invention actually receives UHD service and provides UHD image quality when the car is stationary in a moving vehicle environment, but in an environment where the car operates at a constant speed and the UHD service is not properly received. can provide services in conjunction with HD resolution mobile broadcasting services. It can also be applied in the opposite case.

Figure 16 is a diagram showing an MMTP/ROUTE-based service transmission structure in an ATSC 3.0 broadcasting environment according to an embodiment of the present invention. FIG. 17 is a diagram illustrating in detail an example of the service #1 service layer signaling block shown in FIG. 16. FIG. 18 is a diagram illustrating in detail an example of the service #2 service layer signaling block shown in FIG. 16.

Referring to Figures 16 to 18, a structure for transmitting a USBD including the above-described service handoff information is shown. It can be seen that a service signaling channel (LCT (tsi-0)) is allocated and transmitted for each service. As shown in Figure 16, service information including USBD can be transmitted as individual files or as a single package.

Figure 19 is a diagram showing a computer system according to an embodiment of the present invention.

Referring to FIG. 19, an apparatus for providing service handoff according to an embodiment of the present invention may be implemented in a computer system 1100 such as a computer-readable recording medium. As shown in Figure 19, computer system 1100 includes one or more processors 1110, memory 1130, user interface input device 1140, and user interface output device 1150 that communicate with each other through bus 1120. and storage 1160. Additionally, the computer system 1100 may further include a network interface 1170 connected to the network 1180. The processor 1110 may be a central processing unit or a semiconductor device that executes processing instructions stored in the memory 1130 or storage 1160. Memory 1130 and storage 1160 may be various types of volatile or non-volatile storage media. For example, the memory may include ROM 1131 or RAM 1132.

As described above, the apparatus and method for providing service handoff according to the present invention are not limited to the configuration and method of the embodiments described above, and the embodiments are described in detail so that various modifications can be made. All or part of them may be selectively combined.

11: Service handoff information generation unit 12: Broadcast signal generation unit
13: Communication unit 110: Physical layer receiving unit
111: Tuner unit 112: Baseband processing unit
120: Service handoff processing unit 130: Service handoff database unit
140: Broadband processing unit 150: Output unit
200: streaming server
1100: computer system 1110: processor
1120: Bus 1130: Memory
1131: Romans 1132: Ram
1140: User interface input device
1150: User interface output device
1160: Storage 1170: Network Interface
1180: network

Claims (20)

In a method of providing service handoff by a service handoff providing device,
Receiving a broadcast signal for providing a broadcast service in a broadcast reception area of the user's current location;
Processing service handoff information included in the broadcast signal; and
providing the broadcast service using the broadcast signal, and continuing to provide the broadcast service using the service handoff information when the broadcast service is outside the broadcast reception area;
Including,
The broadcast signal is
Contains the broadcast reception area, at least one adjacent broadcast reception area adjacent to the broadcast reception area, and service handoff information of a broadband network including the broadcast reception area,
The step of processing the service handoff information is
With reference to the service handoff information of the broadcast reception area, any one of broadcast service provision through the adjacent broadcast reception area capable of providing broadcast services provided by the broadcast reception area and broadcast service provision through the broadband network A service handoff provision method characterized by determining a service provision method. delete In claim 1,
The step of processing the service handoff information is
A method of providing service handoff, characterized in that extracting service handoff information included in USBD (User Service Bundle Description) of service layer signaling information from the broadcast signal. delete In claim 1,
The step of continuously providing the broadcast service is
When leaving the first broadcast reception area where the broadcast service is received and entering the second broadcast reception area, a broadcast signal corresponding to the broadcast service is received in the second broadcast reception area using the service handoff information. A service handoff provision method characterized by continuously providing the broadcast service. In claim 5,
The step of continuously providing the broadcast service is
Continuously providing the broadcast service by receiving a broadcast signal corresponding to the broadcast service in the second broadcast reception area with reference to the identifier, frequency, broadcaster identifier, and linked service type of the broadcast service included in the service handoff information. A method of providing service handoff, characterized in that. In claim 1,
The step of continuously providing the broadcast service is
When the reception state of the broadcast signal does not correspond to the broadcast signal reception conditions for providing the broadcast service, service handoff characterized in that the broadcast service is continuously provided through a broadband network using the service handoff information. How to provide. In claim 7,
The step of continuously providing the broadcast service is
A service hand, characterized in that the broadcast service is provided using either a streaming service or a download service from a streaming server that provides the broadcast service corresponding to the broadband network address and linked service type included in the service handoff information. How to provide off. In claim 6,
The step of continuously providing the broadcast service is
If the reception state of the broadcast signal does not correspond to the broadcast signal reception conditions for providing the broadcast service, the broadcaster identifier and the linkage of the first broadcast service being provided in the broadcast reception area using the service handoff information A method of providing a service handoff, characterized in that the second broadcast service is provided by changing to a second broadcast service of the same service type and a different frequency. In claim 9,
The step of continuously providing the broadcast service is
Check whether the broadcast signal reception conditions of the broadcast signal providing the second broadcast service correspond, change to the second broadcast service only if it corresponds to the broadcast signal reception conditions, and provide the first broadcast service. A method for providing a service handoff, characterized in that, when the broadcast signal receiving condition matches the broadcast signal, the second broadcast service is changed back to the first broadcast service. A receiver that receives a broadcast signal for providing a broadcast service in the broadcast reception area of the user's current location;
Process the service handoff information included in the broadcast signal, provide the broadcast service using the broadcast signal, and, when outside the broadcast reception area for receiving the broadcast service, use the service handoff information to provide the broadcast service. a service handoff processing unit that continuously provides services; and
a broadband processing unit that receives the broadcast service through a broadband network based on the service handoff information;
Including,
The broadcast signal is
Contains the broadcast reception area, at least one adjacent broadcast reception area adjacent to the broadcast reception area, and service handoff information of a broadband network including the broadcast reception area,
The service handoff processing unit
With reference to the service handoff information of the broadcast reception area, any one of broadcast service provision through the adjacent broadcast reception area capable of providing broadcast services provided by the broadcast reception area and broadcast service provision through the broadband network A service handoff provision device characterized in that it determines a service provision method. delete In claim 11,
The service handoff processing unit
A service handoff providing device, characterized in that extracting service handoff information included in USBD (User Service Bundle Description) of service layer signaling information from the broadcast signal. delete In claim 11,
The service handoff processing unit
When leaving the first broadcast reception area where the broadcast service is received and entering the second broadcast reception area, a broadcast signal corresponding to the broadcast service is received in the second broadcast reception area using the service handoff information. A service handoff providing device, characterized in that it continuously provides the broadcast service. In claim 15,
The service handoff processing unit
Continuously providing the broadcast service by receiving a broadcast signal corresponding to the broadcast service in the second broadcast reception area with reference to the identifier, frequency, broadcaster identifier, and linked service type of the broadcast service included in the service handoff information. A service handoff providing device, characterized in that. In claim 11,
The service handoff processing unit
Characterized by determining whether the reception state of the broadcast signal does not correspond to the broadcast signal reception conditions for providing the broadcast service and whether it is possible to receive the broadcast service through a broadband network using the service handoff information. A device that provides service handoff. In claim 17,
The broadband processing unit
A service hand, characterized in that the broadcast service is provided using either a streaming service or a download service from a streaming server that provides the broadcast service corresponding to the broadband network address and linked service type included in the service handoff information. Off-provided device. In claim 16,
The service handoff processing unit
If the reception state of the broadcast signal does not correspond to the broadcast signal reception conditions for providing the broadcast service, the broadcaster identifier and the linkage of the first broadcast service being provided in the broadcast reception area using the service handoff information A service handoff providing device, characterized in that it provides the second broadcast service by changing to a second broadcast service of the same service type and different frequency. In claim 19,
The service handoff processing unit
Check whether the broadcast signal reception conditions of the broadcast signal providing the second broadcast service correspond, change to the second broadcast service only if it corresponds to the broadcast signal reception conditions, and provide the first broadcast service. A service handoff providing device, characterized in that, when the broadcast signal reception condition becomes corresponding, the second broadcast service is changed back to the first broadcast service.

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