CN113824991A

CN113824991A - Overseas television signal transmission system, method, apparatus, terminal and storage medium

Info

Publication number: CN113824991A
Application number: CN202111275829.9A
Authority: CN
Inventors: 宋倩; 宁运飞; 陶永
Original assignee: China Telecom Corp Ltd
Current assignee: China Telecom Corp Ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2021-12-21

Abstract

The application provides an overseas television signal transmission system, method, device, terminal and storage medium, the system comprising: an overseas television signal processing system for accessing the overseas television signals and converting into a first video transport stream; an optical line terminal for transmitting a second multicast stream of inbound television signals and communicatively coupled to the outbound television signal processing system to enable introduction of the first video transport stream; the optical line terminal is also in communication connection with the digital video conversion equipment of each user and is managed in a domain-by-domain manner by dividing the right, so that the corresponding first multicast stream is provided for only the target user which is allowed by the right and requests the overseas television broadcasting. The method comprises the steps that a first video transmission stream of an overseas television signal is mixed into an IPTV network through an optical line terminal, and a first multicast stream is provided to a target user at the optical line terminal in a safe and isolated mode, so that the first video transmission stream is prevented from leaking to a non-target user; in addition, the overseas television signal processing system may also be connected to a supervisory platform to facilitate supervision.

Description

Overseas television signal transmission system, method, apparatus, terminal and storage medium

Technical Field

The present application relates to the field of IPTV technology, and in particular, to an overseas television signal transmission system, method, apparatus, terminal, and storage medium.

Background

At present, high-end star hotels all have hard requirements on overseas channels, however, the overseas channels are introduced into an IPTV network, and the system has difficulty in implementation as the system needs to meet the requirements on signal access, filtering, supervision and the like.

Therefore, the IPTV service of this type of hotel faces difficult points, and how to access and transmit the overseas channel video stream of the hotel to the digital video conversion device in the IPTV network of the hotel and play the stream is a technical problem to be solved at present.

Inventing messages

In view of the above-described drawbacks of the prior art, it is an object of the present application to provide an overseas television signal transmission system, method, apparatus, terminal and storage medium.

A first aspect of the present application provides an overseas television signal transmission system, which is applied to provide network play of an overseas television for a user; the overseas television signal transmission system includes: an overseas television signal processing system for accessing the overseas television signals and converting into a first video transport stream; an optical line terminal for transmitting a second multicast stream of inbound television signals and communicatively coupled to the outbound television signal processing system to enable introduction of a first video transport stream; the optical line terminal is also in communication connection with the digital video conversion equipment of each user through an optical fiber network, and manages the users in a divided-right and divided-domain manner so as to provide a first multicast stream corresponding to the first video transport stream only to a target user which is allowed by the authority and requests the overseas television playing.

In an embodiment of the first aspect, the overseas television signal processing system comprises: a satellite receiver for receiving the overseas television signals and converting the overseas television signals into a first video transport stream; a decoder for decoding the first video transport stream into a preset encoding format; and the switch is in communication connection with the satellite receiver and the decoder and is used for transmitting the video transmission stream to the decoder and transmitting the first video transmission stream decoded into a preset coding format to the multicast stream to the optical line terminal.

In an embodiment of the first aspect, the optical line terminal is configured with a plurality of slice units isolated from each other in a weighted domain, wherein at least one target slice unit is configured to provide the first video transport stream to the target user.

In an embodiment of the first aspect, the at least one target slice unit introduces a video transport stream through the assigned upstream port and provides the video transport stream to the corresponding digital video transform device of the target user through the assigned downstream port.

In an embodiment of the first aspect, the user-oriented electronic program guide is configured to present only the target user with an option to select playback of the first video transport stream.

In an embodiment of the first aspect, the optical line terminal provides the first multicast stream according to a request of an IPOE dialing mode of the digital video conversion device.

In an embodiment of the first aspect, the overseas television signal processing system further includes a management switch, communicatively connected to the satellite receiver and the decoder, and configured to collect operation information of the satellite receiver and the decoder, and transmit the operation information to a monitoring platform.

A second aspect of the present application provides a data transmission method applied to an optical line terminal in the outbound television signal transmission system according to any one of the first aspects; the data transmission method comprises the following steps: responding to a request of a user for the overseas television playing, and forwarding the request to an overseas television signal processing system by the optical line terminal to acquire a corresponding first video transmission stream; and the optical line terminal sends a first multicast stream corresponding to the first video transmission stream to respond to the request.

A third aspect of the present application provides a data transmission apparatus for use in an optical line terminal in an overseas television signal transmission system according to any one of the first aspects; the data transmission apparatus includes: the system comprises a first communication module, a second communication module and a third communication module, wherein the first communication module is used for responding to a request of a user for the overseas television playing and forwarding the request to an overseas television signal processing system to acquire a corresponding first video transmission stream; and the second communication module is used for sending a first multicast stream corresponding to the first video transmission stream so as to respond to the request.

A fourth aspect of the present application provides an optical line terminal, including: a processor and an optical communication module; the optical communication module is used for communicating with the outside; the processor is configured to execute program instructions to perform the data transmission method according to the second aspect.

A fifth aspect of the present application provides a computer-readable storage medium storing program instructions that are executed to perform the data transmission method according to the second aspect.

In summary, embodiments of the present application provide an overseas television signal transmission system, a method, an apparatus, a terminal, and a storage medium, where the overseas television signal transmission system includes: an overseas television signal processing system for accessing the overseas television signals and converting into a first video transport stream; an optical line terminal for transmitting a second multicast stream of inbound television signals and communicatively coupled to the outbound television signal processing system to enable introduction of a first video transport stream; the optical line terminal is also in communication connection with the digital video conversion equipment of each user through an optical fiber network, and manages the users in a divided-right and divided-domain manner so as to provide a first multicast stream corresponding to the first video transport stream only to a target user which is allowed by the authority and requests the overseas television playing. According to the oversea television signal transmission system, the first video transmission stream of the oversea television signal is mixed into an IPTV network through the optical line terminal, and the first multicast stream is provided to a target user in a safe and isolated mode through the optical line terminal, so that the first multicast stream is prevented from leaking to a non-target user; in addition, the overseas television signal processing system may also be connected to a supervisory platform to facilitate supervision.

Drawings

Fig. 1 shows a schematic structural diagram of an overseas television signal transmission system in an embodiment of the present application.

Fig. 2 shows a schematic structural diagram of deployment of a television playing system in an embodiment of the present application.

Fig. 3 shows a schematic diagram of the principle of implementing slicing by the optical line terminal in the embodiment of the present application.

Fig. 4 shows a flow chart of the request of the outbound tv channel in the embodiment of the present application.

Fig. 5A to 5D are schematic structural diagrams illustrating an outbound television signal transmission system in various networking modes according to an embodiment of the present application.

Fig. 6 shows a schematic structural diagram of a data transmission device in an embodiment of the present application.

Detailed Description

Embodiments of the present application are described below with specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure herein. The present application is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present application. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Embodiments of the present application will be described in detail below with reference to the accompanying drawings so that those skilled in the art to which the present application pertains can easily carry out the present application. The present application may be embodied in many different forms and is not limited to the embodiments described herein.

Reference throughout this specification to "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. Furthermore, the particular features, structures, materials, or characteristics shown may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of different embodiments or examples presented in this application can be combined and combined by those skilled in the art without contradiction.

Furthermore, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the expressions of the present application, "plurality" means two or more unless specifically defined otherwise.

In order to clearly explain the present application, components that are not related to the description are omitted, and the same reference numerals are given to the same or similar components throughout the specification.

Throughout the specification, when a device is referred to as being "connected" to another device, this includes not only the case of being "directly connected" but also the case of being "indirectly connected" with another element interposed therebetween. In addition, when a device "includes" a certain component, unless otherwise stated, the device does not exclude other components, but may include other components.

Although the terms first, second, etc. may be used herein to refer to various elements in some examples, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, the first interface and the second interface are represented. Also, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used in this specification, specify the presence of stated features, steps, operations, elements, modules, items, species, and/or groups, but do not preclude the presence, or addition of one or more other features, steps, operations, elements, modules, items, species, and/or groups thereof. The terms "or" and/or "as used herein are to be construed as inclusive or meaning any one or any combination. Thus, "A, B or C" or "A, B and/or C" means "any of the following: a; b; c; a and B; a and C; b and C; A. b and C ". An exception to this definition will occur only when a combination of elements, functions, steps or operations are inherently mutually exclusive in some way.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the" include plural forms as long as the words do not expressly indicate a contrary meaning. The term "comprises/comprising" when used in this specification is taken to specify the presence of stated features, regions, integers, steps, operations, elements, and/or components, but does not exclude the presence or addition of other features, regions, integers, steps, operations, elements, and/or components.

Although not defined differently, including technical and scientific terms used herein, all terms have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Terms defined in commonly used dictionaries are to be additionally interpreted as having meanings consistent with those of related art documents and currently prompted messages, and should not be excessively interpreted as having ideal or very formulaic meanings unless defined.

At present, high-end hotels have hard requirements for providing outdoor television broadcasting for residents, but the construction of corresponding systems has difficulties, such as requirements on signal access, filtering, supervision and the like. Generally, there is an IPTV service in a hotel, that is, there is an internet network for IPTV and internet access, and how to stream an off-shore video to a digital video conversion device and play it in the hotel through the existing network is a problem to be solved. To this end, an overseas television signal transmission system that solves this problem is provided in the embodiments of the present application.

It should be noted that the term "user" is used to cover, for example, an individual, a hotel, a business, an enterprise, or other entity, and the system in the embodiment of the present application is not limited to the hotel as the only implementation object. In addition, the "subscriber" is also the "subscriber" of the IPTV service.

As shown in fig. 1, a schematic structural diagram of an oversea television signal transmission system in the embodiment of the present application is shown.

The overseas television signal transmission system is constructed based on the Internet, and can not only transmit and play the domestic channel signal source, but also introduce the overseas channel signal and play the overseas channel signal correspondingly to the special user requirement.

As shown, the overseas television signal transmission system includes: an outbound television signal processing system 101, an optical line terminal 102, and the like.

The outbound television signal processing system 101 is operative to access outbound television signals and convert to a first video transport stream. In a possible embodiment, the overseas television signal processing system 101 may be located in a room set up on the user side, such as a hotel room.

In a possible embodiment, the overseas television signal processing system 101 includes: a satellite receiver 111, a decoder 112, and a switch 113.

The satellite receiver 111 is operative to receive the outbound television signals and convert them to a first video transport stream. In a possible example, the satellite receiver 111 is an engineering satellite receiver 111, into which an authorization card can be inserted. The satellite receiver 111 may be connected to the satellite antenna 103 through a feeder line, the satellite antenna 103 receives a frequency point signal of an overseas television transmitted from a television satellite and transmits the frequency point signal to the satellite receiver 111, and the satellite receiver 111 performs channel demultiplexing on the frequency point signal to form an IP-based first video Transport Stream (TS) and then inputs the IP-based first video Transport Stream (TS) to the switch 113.

The decoder 112 is configured to decode the first video transport stream into a first video transport stream with a preset encoding format. In a possible example, the decoder 112 may be a high definition encoder (e.g., 1080P, 60Hz or higher resolution of decoded image), and is configured to transcode the video transport stream after the channel demultiplexing process and output the first video transport stream meeting the IPTV requirement, for example, in h.264 or h.265 encoding format.

The switch 113 is communicatively connected to the satellite receiver 111 and the decoder 112, and is configured to transmit the video transmission stream to the decoder 112, and transmit the multicast stream to the olt 102. In some embodiments, the switch 113 may be a layer two switch 113, i.e., a data link layer device, and may forward the data frame by identifying a MAC address in the data frame and according to the MAC address. The switch 113 may be communicatively coupled to the optical line terminal 102(OLT) via optical fiber, for example, may be coupled to an upstream port of the OLT 102 to transmit the multicast stream.

The olt 102 may be configured to transmit a second multicast stream of inbound television signals (which may be generated from a second video transport stream of inbound television signals from an IPTV/OTT content distribution network) and is communicatively coupled to the outbound television signal processing system 101 to introduce the first video transport stream. In some embodiments, the optical line terminal 102 belongs to an IPTV network, and is communicatively connected to the digital video converter 104 of each subscriber. In a possible embodiment, the IPTV network comprises an IPTV access network, such as a hotel, through which multicast streams of domestic and foreign television signals can be transmitted to the digital video conversion device 104 of the hotel and further to the television set of the guest room for playback.

In a possible example, in the outbound television signal processing system 101, an upstream multicast address and port of the optical line terminal 102 used may be agreed between the encoder 112 and the optical line terminal 102, and the encoder pushes the first video transport stream in an encoding format (e.g., h.264) conforming to the IPTV specification to the upstream port of the optical line terminal 102. When the digital video converter 104 on the subscriber side sends a message (e.g., an IGMP message) based on a two-layer multicast protocol to request an outbound channel, the switch 113 forwards the request to the olt 102, the olt 102 acts as a proxy and forwards the request to the encoder 112, the encoder 112 provides a corresponding first video transport stream, and the first video transport stream is mixed into the olt 102 through the switch 113, so that an upstream port to which the olt 102 is connected can pull a desired outbound television signal.

In some embodiments, the digital video transformation device 104 may include a set-top box, or may be another device that includes the functionality of an integrated set-top box, such as an intelligent convergence gateway device.

To implement management and monitoring of the broadcast of the overseas television signals, in a possible example, the overseas television signal processing system 101 may further include a management switch 114, which is communicatively connected to the satellite receiver 111 and the decoder 112, and is configured to collect operation information (for example, one or more of access, conversion, broadcast, and the like of the overseas television signals) of the satellite receiver and the decoder 112, and transmit the operation information to the monitoring platform 105 of the background, so as to perform real-time monitoring on the access condition of the overseas channels of each user (such as a hotel) at the background, and ensure that the overseas television source signals can be transmitted accurately and safely. In a possible example, a firewall may be provided between the outbound television signal processing system 101 and the supervisory platform 105 to allow secure isolated communications between the two.

It should be noted that the connection lines related to the communication connection in the drawings are only illustrative, and may be direct connections or indirect connections in practice, and the specific implementation is not limited thereto. For example, there may be other gateway devices, optical modems, etc. between the olt 102 and the dvt 104.

Please refer to fig. 2, which shows a schematic structural diagram of an IPTV system deployment in the embodiment of the present application.

As shown in the figure, an MSE device 201 of the service control layer is connected upstream to an optical line terminal 202, and a digital video conversion device 203 of a user is connected downstream to the optical line terminal 202, where the optical line terminal 202 may be the optical line terminal 102 in the example of fig. 1, so as to combine the outbound television signal processing system 101 in fig. 1 to mix the outbound television signals into the optical line terminal 202. The MSE 201 receives a television signal provided by a Content Delivery Network (CDN) of an IPTV or an internet television (OTT) and sends the television signal downstream to the digital video conversion device 203 via the optical line terminal 202. In this process, the multicast replication point is located at the optical line terminal 202, that is, the starting point of the digital video converter 203 of the user pulling the television signal is located at the optical line terminal 202.

In some embodiments, the digital video translation device 203 may pull a multicast stream from the optical line terminal 202 via the IPOE dial-up mode, including the second multicast stream of inbound television signals and the first video transport stream of outbound television mixed in via the outbound television signal processing system 101.

In some embodiments, the digital video conversion device 203 may pull the multicast stream from the optical line terminal 202 using IPOE dial-up mode. By means of IPOE dialing, pulling a stream from the optical line terminal 202 can satisfy the user's requirement to pull the first multicast stream of the mixed-in outbound television from the OLT. Alternatively, the digital video translation device 203 may be configured with dual stack dialing capability, with an IPOE dialing mode and a PPPOE dialing mode, the PPPOE dialing mode being used to pull the second multicast stream from the MSE device 201 in the event of a failure of the IPOE dialing mode.

It should be noted that, the IPTV system is also used to provide broadband internet service, and the service control layer is connected to the internet in an upstream manner, that is, the user equipment (such as a computer and a notebook computer) can be connected to the internet through the MSE device, the OLT, and the downstream optical network unit (ONT), for example.

In a possible example, each user corresponds to one user, a plurality of users of the same type form a user group, and the OLT may multicast each user group. For example, a user group is formed among a plurality of chain hotels having outdoor television channel requirements. Possibly, the optical line terminal is connected with digital video conversion equipment of a plurality of users, such as digital video conversion equipment of different users, wherein some users do not have an overseas television service, such as a common star hotel; some hotels have overseas television services, such as high-end star hotels; thus, the optical line terminal can manage in a decentralized and domain-divided manner among users of different users to provide the first video transmission stream of the outbound television to only authorized target users, namely, only users among the authorized target users can watch the outbound television.

In order to realize physical resource sharing and isolate the overseas signal source from other IPTV services, a slicing technology of an optical line terminal can be introduced to perform separate-right and separate-domain isolation management on users of a plurality of users in one physical optical line terminal, so that only an OLT downlink port correspondingly connected with a digital video conversion device of a target user can pull a first video transmission stream of the overseas television mixed by the OLT.

As shown in fig. 3, a schematic diagram of an optical line terminal 300 implementing slicing in the embodiment of the present application is shown.

The optical line terminal 300 is configured as a plurality of slicing units, exemplarily shown as a first slicing unit 301, a second slicing unit 302, a third slicing unit 303, and a fourth slicing unit 304, which are separated from each other in a weighted domain. Each slice unit may correspond to a user, such as user 1-user 4 as illustrated in the figure. Wherein at least one target slice unit is used to provide a first video transport stream to the target user. The at least one target slicing unit introduces a video transmission stream through the uplink port which is allocated in an exclusive way and provides the video transmission stream to the digital video transformation device corresponding to the target user through the downlink port which is allocated in an exclusive way. For example, the third slicing unit 303 is a target slicing unit, the user 3 is a target user, and the third slicing unit is used for providing the overseas tv-on-demand service to the user 3.

In a possible example, the optical line terminal 300 is sliced, that is, resources such as an upstream port and a downstream port (P2P/PON) of one physical OLT are sliced to form each slice unit. Therefore, network sharing and resource multiplexing can be realized among all the slicing units. The slicing units can be isolated from each other, each slicing unit is provided with an independent control surface and an independent management surface, and each slice can be independently configured with service functions without mutual influence. The communication, message, configuration, state and the like among all the slice units are isolated from each other, and all the slice OLTs are managed in a weighted and domain-divided mode and are operated and maintained independently.

For example, the first slicing unit is responsible for the low-speed dedicated line service of enterprise 1, the second slicing unit is responsible for the medium-speed dedicated line service of enterprise 2, the third slicing unit is responsible for the high-speed dedicated line service of enterprise 3, and the fourth slicing unit is responsible for the home broadband service.

For another example, in an IPTV scenario, a first slicing unit is responsible for IPTV service of hotel 1, a second slicing unit is responsible for IPTV service of hotel 2, and a third slicing unit is responsible for IPTV service of hotel 3. Wherein, hotel 1 and hotel 2 have no requirement for playing the overseas television, the third slicing unit is the target slicing unit, and the third slicing unit and other slicing units are separated from each other to push the first video transport stream of the overseas television for hotel 3, and are not mixed with other slicing units and received by the users of hotel 1 and hotel 2.

The digital video converter apparatus may receive a user operation to select a program to be viewed by displaying an Electronic Program Guide (EPG) on the television. Thus, the EPG displayed on the television may be different for users who may or may not have overseas television channel playback rights. Wherein, the EPG displayed by the television of the user who has the broadcasting authority of the overseas television channel comprises options for selecting the first video transmission stream to be broadcasted, and the EPG displayed by the television of the user who does not have the broadcasting authority of the overseas television channel does not comprise the options. In addition, among a plurality of users having the broadcasting authority of the overseas television channels, the EPGs thereof are also different correspondingly due to the difference of the overseas television channels that can be broadcasted by the users. In a possible specific implementation example, the EPG may be assigned to a certain user group and configure the above-mentioned agreed upstream multicast address IP and upstream port of the overseas signal, so that only the users in the user group can view the play option of the second multicast stream of the overseas television belonging to the user group on the EPG after the television is turned on, and the users other than the user group cannot view the play option on the EPG, thereby implementing the capability of displaying the overseas signal source in the EPG in a separate-weighted domain.

In a possible example, the EPG may be designed by project. Each user in the same project may use the same EPG. An item may correspond to a user group, and each user in a user group uses the same EPG, for example, each user in a certain user group is a chain hotel that requires an overseas television channel of the same brand, and for example, each user in a certain user group is a chain hotel that requires an overseas television channel of a different brand. Alternatively, one item corresponds to one user, i.e., different users use different customized EPGs.

Referring to fig. 4, a schematic flow chart of the request of the outbound tv channel in the embodiment of the present application is shown.

The process comprises the following steps:

step S401: the user's digital video conversion device issues a request for an outbound television broadcast.

In some embodiments, the request may be in the form of an IGMP message based on a two-layer multicast protocol.

Step S402: in response to a user's request for an outbound television broadcast, the optical line terminal forwards the request to an outbound television signal processing system.

Step S403: the outbound television signal processing system, which may be an encoder therein, processes the request, provides a first video transport stream corresponding to the request to the optical line terminal.

In some embodiments, an encoder in the overseas television signal processing system provides the first video transport stream corresponding to the request to the optical line terminal at the agreed upstream multicast address and port.

Step S404: and the optical line terminal provides a first multicast stream corresponding to the first video transmission stream to the digital video conversion equipment.

In some embodiments, the optical line terminal serves as a multicast replication point, and performs multicast replication on the first video stream to form a first multicast stream to be provided to a target user.

In some embodiments, if there is a target slice unit in the optical line terminal to exclusively manage the digital video conversion device of the user, the optical line terminal in steps S401 to S404 is a service for completing the overseas tv broadcasting for the user through the target slice unit corresponding to the user.

To illustrate the effect of the external television signal transmission system in the embodiment of the present application, the following description is made one by way of an embodiment in various application scenarios.

As shown in fig. 5A to 5D, schematic structural diagrams of the outbound television signal transmission system in the embodiment of the present application in multiple networking modes are shown.

Fig. 5A is a schematic structural diagram illustrating a digital video conversion device hung in a Fiber To The Building (FTTB) networking mode according to an embodiment of the present application.

As shown in the figure, a broadband access server (BRAS) and an overseas television signal processing system are respectively connected to an upstream port of an optical line terminal from two paths, and a downstream port of the optical line terminal is connected to a multi-user access unit (MDU) device and is connected to a digital video conversion device of a user through the MDU device. The outbound television signal processing system pushes a first video transport stream of the outbound television into the optical line terminal.

Through the detection of the applicant at one side of the digital video conversion equipment, under the networking mode, a user can normally pull the first video transmission stream of the overseas television, and the purpose is successfully achieved.

Fig. 5B is a schematic structural diagram illustrating an uplink convergence gateway device of a Local Area Network (LAN) in a Fiber To The Building (FTTB) networking mode according to an embodiment of the present application.

As shown in the figure, a broadband access server (BRAS) and an overseas television signal processing system are respectively connected to an upstream port of an optical line terminal from two paths, and a downstream port of the optical line terminal is connected to a multi-user access unit (MDU) device and is connected to a Local Area Network (LAN) upstream convergence gateway device through the MDU device.

In some embodiments, the lan upstream convergence gateway device refers to a device having convergence functions such as a network routing function, a home gateway function, an IPTV digital video conversion device function, and a VOIP voice function, and may provide gateway functions such as wireless WiFi access.

By the detection of the applicant, in the networking mode, the user can normally pull the first video transmission stream of the overseas television, and the aim is successfully achieved.

Fig. 5C is a schematic structural diagram illustrating a PON-on uplink convergence gateway device in an optical Fiber To The Home (FTTH) networking mode according to an embodiment of the present application.

As shown in the figure, a broadband access server (BRAS) and an outbound television signal processing system are respectively connected to an upstream port of an optical line terminal from two ways, and a downstream port of the optical line terminal is connected to a PON upstream convergence gateway device. Because the PON module is integrated in the PON uplink convergence gateway equipment, the PON uplink convergence gateway equipment can be directly in communication connection with the OLT without an MDU. IPT digital video conversion equipment, a home gateway function, a VOIP voice function and the like can also be integrated in the PON uplink fusion gateway equipment.

Fig. 5D shows a schematic structural diagram of a plurality of OLT devices or OLT slicing units connected downstream from the same BRAS in an embodiment of the present application.

As shown, a broadband access server (BRAS) and an outbound television signal processing system are connected from two lines to the upstream port of a first OLT device or OLT slice unit, respectively, which in turn is connected via another line to the upstream port of a second OLT device or OLT slice unit.

The first video transport stream of the first OLT device or OLT slice unit cannot be pulled, i.e., the digital video conversion device of the user connected downstream of the second OLT device or OLT slice unit cannot receive the signal of the outbound television channel, as detected by the digital video conversion device or the upstream convergence gateway device (e.g., LAN or PON upstream convergence gateway device) connected downstream of the second OLT device or OLT slice unit.

Fig. 6 is a block diagram of a data transmission apparatus according to an embodiment of the present invention. The data transmission apparatus may be implemented in the optical line terminal in the outbound television signal transmission system of the foregoing embodiment. Therefore, the principle and technical features of the data transmission apparatus can refer to the previous embodiment of the optical line terminal, and the same technical contents are not repeated herein.

The data transmission apparatus 600 includes:

a first communication module 601, configured to respond to a request for an outbound television broadcast from a user, forward the request to an outbound television signal processing system to obtain a corresponding first video transport stream;

a second communication module 602, configured to send a first multicast stream corresponding to the first video transport stream in response to the request.

It should be noted that, in particular, each functional module in the embodiment of fig. 6 may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of program instruction products. The program instruction product includes one or more program instructions. The processes or functions according to the present application occur in whole or in part when program instruction instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The program instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium.

Moreover, the apparatus disclosed in the embodiment of fig. 6 can be implemented by other module division methods. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the modules described is merely a logical division, and in actual implementation, there may be other divisions, for example, multiple modules or modules may be combined or may be dynamic to another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or modules, and may be in an electrical or other form.

In addition, each functional module and sub-module in the embodiment of fig. 6 may be dynamically in one processing unit, or each module may exist alone physically, or two or more modules may be dynamically in one unit. The dynamic component can be realized in a form of hardware or a form of a software functional module. The dynamic components described above, if implemented in the form of software functional modules and sold or used as a stand-alone product, may also be stored in a computer readable storage medium. The storage medium may be a read-only memory, a magnetic or optical disk, or the like.

An optical line terminal may also be provided in an embodiment of the present application, and include a processor and an optical communication module. The processor is configured to execute the program instructions to perform the flow steps of the optical line terminal in the previous embodiment (e.g., fig. 4). In some embodiments, the processor may be implemented as an MCU, SoC, FPGA, or other processing chip, and the Optical communication module may include at least one Passive Optical Network (PON) chip for converting between Optical and electrical signals. Possibly, the optical line terminal may further include a switch chip, the switch chip is communicatively connected between the at least one passive optical network chip and the processor, and is configured to forward the data packet sent by the at least one passive optical network chip from the corresponding port according to a forwarding table.

In a possible embodiment, the optical line terminal may include a master control disk and an interface disk. The main control panel is responsible for main exchange, and the processor and the exchange chip can be arranged on the main control panel; the interface disc provides a PON interface, and the passive optical network chip can be arranged on the interface disc.

A computer-readable storage medium may also be provided in the embodiments of the present application, which stores program instructions that, when executed, perform the steps of the process of the optical line terminal in the previous embodiment (for example, fig. 4).

The method steps in the above-described embodiments are implemented as software or computer code storable in a recording medium such as a CD ROM, a RAM, a floppy disk, a hard disk, or a magneto-optical disk, or computer code originally stored in a remote recording medium or a non-transitory machine-readable medium and to be stored in a local recording medium downloaded through a network, so that the method represented herein can be stored in such software processes on a recording medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware such as an ASIC or FPGA.

It should be noted that the flow or method representations represented by the flow diagrams of the above-described embodiments of the present application may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process. And the scope of the preferred embodiments of the present application includes other implementations in which functions may be performed out of the order shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved.

For example, the order of the steps in the embodiments of fig. 4 and the like may be changed in a specific scenario, and is not limited to the above representation.

The above embodiments are merely illustrative of the principles and utilities of the present application and are not intended to limit the application. Any person skilled in the art can modify or change the above-described embodiments without departing from the spirit and scope of the present application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present application shall be covered by the claims of the present application.

Claims

1. An overseas television signal transmission system, characterized by being applied to provide network playback of overseas and overseas televisions to users; the overseas television signal transmission system includes:

an overseas television signal processing system for accessing the overseas television signals and converting into a first video transport stream;

an optical line terminal for transmitting a second multicast stream of inbound television signals and communicatively coupled to the outbound television signal processing system to enable introduction of a first video transport stream; the optical line terminal is also in communication connection with the digital video conversion equipment of each user through an optical fiber network, and manages the users in a divided-right and divided-domain manner so as to provide a first multicast stream corresponding to the first video transport stream only to a target user which is allowed by the authority and requests the overseas television playing.

2. The outbound television signal transmission system of claim 1, wherein the outbound television signal processing system comprises:

a satellite receiver for receiving the overseas television signals and converting the overseas television signals into a first video transport stream;

a decoder for decoding the first video transport stream into a preset encoding format;

and the switch is in communication connection with the satellite receiver and the decoder and is used for transmitting the video transmission stream to the decoder and transmitting the first video transmission stream decoded into a preset coding format to the multicast stream to the optical line terminal.

3. The outbound television signal transmission system of claim 1, wherein the optical line terminal is configured as a plurality of slice units that are separated from each other in a weighted domain, wherein at least one target slice unit is configured to provide the first video transport stream to the target user.

4. The overseas television signal transmission system of claim 3, wherein the at least one target slice unit introduces a video transport stream through the uniquely assigned upstream port and provides the video transport stream to a corresponding digital video conversion device of the target user through the uniquely assigned downstream port.

5. The outbound television signal transmission system of claim 1, wherein the user-oriented electronic program guide is configured to present only the target user with an option for selecting playback of the first video transport stream.

6. The outbound television signal transmission system of claim 1, wherein the optical line terminal provides the first multicast stream upon request by an IPOE dial-up mode of the digital video conversion device.

7. The overseas television signal transmission system of claim 2, wherein the overseas television signal processing system further comprises a management switch communicatively coupled to the satellite receiver and decoder for collecting operational information of the satellite receiver and decoder numbers and transmitting the operational information to a supervisory platform.

8. A data transmission method applied to an optical line terminal in the outbound television signal transmission system according to any one of claims 1 to 7; the data transmission method comprises the following steps:

responding to a request of a user for the overseas television playing, and forwarding the request to an overseas television signal processing system by the optical line terminal to acquire a corresponding first video transmission stream;

and the optical line terminal sends a first multicast stream corresponding to the first video transmission stream to respond to the request.

9. A data transmission apparatus, for use in an optical line terminal in an overseas television signal transmission system as claimed in any one of claims 1 to 7; the data transmission apparatus includes:

the system comprises a first communication module, a second communication module and a third communication module, wherein the first communication module is used for responding to a request of a user for the overseas television playing and forwarding the request to an overseas television signal processing system to acquire a corresponding first video transmission stream;

and the second communication module is used for sending a first multicast stream corresponding to the first video transmission stream so as to respond to the request.

10. An optical line terminal, comprising: a processor and an optical communication module; the optical communication module is used for communicating with the outside; the processor is configured to execute program instructions to perform the data transmission method of claim 8.

11. A computer-readable storage medium, in which program instructions are stored, the program instructions being executed to perform the data transmission method according to claim 8.