CN111615004A - OTT-TV transmission system and transmission method - Google Patents
OTT-TV transmission system and transmission method Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
- H04N21/6125—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via Internet
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
- H04N21/6118—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving cable transmission, e.g. using a cable modem
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
- H04N21/6131—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via a mobile phone network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6156—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network
- H04N21/6168—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network involving cable transmission, e.g. using a cable modem
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6156—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network
- H04N21/6175—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network involving transmission via Internet
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6156—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network
- H04N21/6181—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network involving transmission via a mobile phone network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/64—Addressing
- H04N21/6405—Multicasting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/643—Communication protocols
- H04N21/64322—IP
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Abstract
The invention discloses an OTT-TV transmission system and a transmission method, which comprise a bidirectional network, an intelligent data local side and a terminal intelligent gateway, wherein the intelligent data local side and the terminal intelligent gateway form a point-to-multipoint broadcast channel, the broadcast channel is superposed on the bidirectional network channel, and a downlink video program stream of the OTT-TV is shunted to the broadcast channel through the intelligent data local side. According to the OTT-TV transmission system, the OTT-TV downlink video program stream is shunted to the superposed broadcast channel through the intelligent data local side, so that an ultra-wide downlink broadcast channel can be provided for OTT-TV services, and the OTT video services with high quality and high code rate are transmitted.
Description
Technical Field
The invention relates to the field of network transmission, in particular to an OTT-TV transmission system, and particularly relates to an OTT-TV transmission system and a transmission method based on IP address mapping broadcast channel superposition.
Background
With the development of networks and video services, video services such as OTT-TV (internet television) are protruding, and especially with the rise of 4K/8K video programs, people have an increasing demand for bandwidth, and the bandwidth of a conventional bidirectional network, whether it is a GPON/EPON with wired access or a 4G network with wireless access, is difficult to meet the OTT-TV service demand of 4K/8K video programs.
The current overall service model is summarized to be an asymmetric service model with the following behavior as the main part, particularly in the field of video services represented by OTT-TV, the bandwidth required by downlink is hundreds of times, thousands of times or even higher (namely the ratio is more than 1: 1000) of the uplink, and the high asymmetric ratio is beyond the reach of any current access network technology. In the prior art, the highest ratio of uplink bandwidth to downlink bandwidth is 1: about 10, there is a problem that the downstream bandwidth is insufficient or the upstream bandwidth is excessive to cause waste.
Disclosure of Invention
In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to realize seamless compatibility with the original bidirectional service by superimposing a unidirectional downlink broadband extensible broadcast channel and corresponding devices on the basis of not changing the network structure of the existing bidirectional network, so that the realized network model can meet the requirement of the high-quality OTT-TV service with continuously increasing bandwidth requirement in the future, and the idea is the starting point of the present invention patent.
In order to achieve the above object, the present invention provides an OTT-TV transmission system, which is characterized in that the system comprises a bidirectional network, an intelligent data office end and a terminal intelligent gateway; the intelligent data office end and the terminal intelligent gateway form a point-to-multipoint broadcast channel, the broadcast channel is superposed to the bidirectional network channel, and the downlink video program stream of the OTT-TV is distributed to the broadcast channel through the intelligent data office end.
Furthermore, the intelligent data office end is set to replace a terminal user to initiate OTT-TV service application and receive OTT-TV video service to the OTT-TV server.
Furthermore, the interactive transmission of the OTT-TV service is completed by mapping and updating the IP addresses of the uplink and downlink messages of the OTT-TV.
Further, the terminal intelligent gateway receives an uplink OTT-TV message from a user, identifies and filters the OTT-TV uplink message according to the IP destination address of the uplink OTT-TV message, re-encapsulates the OTT-TV uplink message to a UDP/IP channel with the destination address being an intelligent data office end, and sends the OTT-TV uplink message to the intelligent data office end through an uplink of a bidirectional network;
the intelligent data office side receives the OTT-TV uplink message after being encapsulated again, strips UDP/IP channel encapsulation, and then maps and updates the IP address of the OTT-TV uplink message source after being encapsulated again into a network side interface (NNI) address of the intelligent data office side and sends the address to the OTT-TV server;
the method comprises the steps that an intelligent data office receives downlink OTT-TV video data and OTT-TV downlink messages of an OTT-TV server, and identifies and filters the OTT-TV downlink messages according to the IP source address of the messages;
mapping the IP destination address of the OTT-TV downlink message back to the IP address of the OTT-TV service request user, packaging the updated message to an allocated UDP/IP multicast channel, and transmitting the updated message to the terminal intelligent gateway through an IP broadcast channel;
and after filtering the local OTT-TV message by the appointed UDP/IP multicast channel, the terminal intelligent gateway strips the UDP/IP multicast encapsulation, and sends the message to OTT-TV terminal video equipment for playing through the local network, thereby completing the interaction of the OTT-TV video service.
Further, the UDP/IP multicast channel address is set to be defined by a combination of one or more parameters in a network packet five-tuple (source MAC, destination MAC, source IP, destination IP, and destination port number).
Furthermore, the intelligent data office end periodically broadcasts an OTT-TV server list, a multicast channel distribution information table, an OTT-TV registry and other basic management control information to all terminal intelligent gateways by appointing a UDP/IP main channel;
after the terminal intelligent gateway is electrified, the basic service information is automatically and periodically received, stored and updated, and accordingly identification, filtration, UDP/IP encapsulation and forwarding inside the home network of the OTT service are completed;
the intelligent data office end completes the identification, filtration, UDP/IP encapsulation and forwarding to the external network of the OTT-TV service according to the service information such as the OTT-TV server list, the multicast channel distribution information table, the OTT-TV registration table and the like.
Furthermore, the intelligent data office end intelligently and dynamically allocates the transmission of OTT-TV service data between the bidirectional network downlink channel and the superposed broadcast channel according to the network service condition.
Further, when the bidirectional network is wired access, the physical channel of the superimposed broadcast channel may be one of an optical fiber, a light wavelength channel, or a radio frequency carrier channel.
Further, when the bidirectional network is accessed wirelessly, the superimposed broadcast channel is set to be in a wireless mode.
The invention discloses an OTT-TV transmission method, which comprises the following steps:
an OTT-TV user initiates a service application to an OTT-TV platform, the IP destination address of the application message is an OTT-TV server, the source address is an OTT-TV user, and the application message is sent to a terminal intelligent gateway through a home network;
the terminal intelligent gateway identifies and filters OTT-TV uplink messages according to the characteristic that the IP destination address of the messages is the address of the OTT-TV server, and integrally packages the OTT-TV uplink messages as loads to a UDP/IP channel with the destination address being the IP address of an intelligent data office end, and sends the OTT-TV uplink messages to the intelligent data office end through an uplink channel of a bidirectional network;
the intelligent data office side receives the OTT-TV uplink message, strips the outer UDP/IP encapsulation, records the related information of the message, maps and updates the source IP address of the original message into the NNI address of the intelligent data office side, and then sends the NNI address to the OTT-TV service platform through the transmission network;
the OTT-TV service platform receives the uplink service message and responds, wherein the destination IP address of the response message is the NNI address of the intelligent data office end, and the source address is the OTT-TV platform address;
the intelligent data office end receives the response message of the OTT-TV platform, updates the destination address of the message into the IP address of the user, and then sends the message to the network terminal through a GPON channel or a superposition logic channel according to a preset bandwidth allocation scheme; when a GPON channel is selected for transmission, the local side directly sends the downlink message with the updated header to the terminal; when the superposition logic channel is selected for transmission, the local side will package the downlink message with the updated header as a load to the UDP/IP multicast channel, and the destination address is the multicast address allocated when the network terminal is applied for registration. Due to the broadcast characteristic, all user terminals can receive the message, and only the corresponding registered terminal can correctly analyze the message content through the multicast channel identifier;
after receiving the OTT-TV downlink message by the superposition logic channel, the network terminal intelligent gateway strips the outer UDP/IP multicast channel encapsulation and forwards the OTT-TV downlink message to the OTT-TV terminal by the home network.
Technical effects
Compared with the service of the traditional OTT-TV, the scheme has the beneficial effects that: the downlink network bandwidth can be conveniently expanded under the condition of not influencing other services, and the video on demand service with higher quality such as 4K/8K can be allowed particularly for OTT-TV services. The method for overlapping the broadcast channels has the advantages of high-efficiency transmission characteristic, expandable bandwidth and simple construction, can improve the service capability of the OTT-TV by one level only by adding a logic processing function module compatible with the original service on the original local-end equipment, and can be applied to various network environments including but not limited to EPON/GPON optical networks, twisted pair wire switched networks, DOCSIS, WiFi access, mobile 2G/3G/4G networks and the like because the IP mapping is the same with the logic processing of shunting.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
FIG. 1 is a transport network diagram of an OTT-TV transport system in accordance with a preferred embodiment of the present invention;
fig. 2 is a traffic flow diagram of an OTT-TV transmission system according to a preferred embodiment of the present invention;
fig. 3 is a service functional block diagram of an intelligent data office end of an OTT-TV transmission system according to a preferred embodiment of the present invention;
fig. 4 is a service function block diagram of a terminal intelligent gateway of an OTT-TV transmission system according to a preferred embodiment of the present invention.
Detailed Description
The invention provides an OTT-TV transmission scheme based on IP address mapping broadcast channel superposition, wherein OTT-TV is an abbreviation of Over The Top TV, and refers to video service based on open Internet, and a terminal can be a television, a computer, a set Top box, a PAD, a smart phone and The like. The OTT-TV transmission system based on IP address mapping broadcast channel superposition is a point-to-multipoint broadcast channel consisting of an intelligent data office end and a terminal intelligent gateway, and the broadcast channel is superposed to the existing bidirectional network. The bidirectional network in the present solution includes, but is not limited to, EPON, GPON, two-layer three-layer switching network, DOCSIS, WiFi access, and mobile 2G/3G/4G network. If the bidirectional network is wired access, the physical channel of the superposed IP broadcast channel can select an optical fiber, an optical wavelength channel or a radio frequency carrier channel; if the wireless access is performed, the superposed broadcast channel also selects a wireless mode.
In the invention, the OTT-TV downlink video program flow is shunted to the superposed broadcast channel through the intelligent data local side, thereby providing an ultra-wide downlink broadcast channel for OTT-TV service and transmitting the OTT-TV video service with high quality and high code rate.
The system realizes interactive transmission of OTT-TV service in a bidirectional network and an IP broadcast channel by carrying out IP address mapping updating on the uplink and downlink messages. The method specifically comprises the following steps: for OTT-TV uplink messages from users, the terminal intelligent gateway identifies and filters OTT-TV uplink messages according to the IP destination address of the messages as the address of an OTT server, packages the OTT-TV uplink messages as a whole load to a UDP/IP channel with the destination address as the IP address of an intelligent data office end, and sends the OTT-TV uplink messages to the intelligent data office end through an uplink channel of a bidirectional network. And after receiving the uplink message, the intelligent data office terminal strips the UDP/IP channel encapsulation, updates the source IP address of the original message into the IP address of the intelligent data office terminal and sends the IP address to the OTT-TV server. For downlink OTT-TV video data and message from an OTT server, the intelligent data office side identifies and filters the OTT-TV message according to the IP source address of the message; and mapping the IP destination address of the message back to the IP address of the OTT-TV service request user, integrally packaging the updated message to the allocated UDP/IP multicast channel, and transmitting the message to the terminal intelligent gateway through the IP broadcast channel. And after filtering the local OTT-TV message by the terminal intelligent gateway through the appointed UDP/IP channel, stripping UDP/IP multicast encapsulation, and sending the message to the OTT-TV request terminal through the local network for playing so as to complete the interaction of the OTT video service.
The downlink OTT-TV video and information message are encapsulated to a corresponding UDP/IP multicast channel again and are transmitted to the intelligent terminal gateway in an IP broadcast link; the uplink OTT message is encapsulated by a specific UDP/IP channel with the destination address as the intelligent data office end and is transmitted in the uplink channel of the bidirectional network. The uplink OTT message and the downlink OTT message are identified by UDP/IP channel identification.
The terminal intelligent gateway identifies the uplink OTT-TV service through the IP destination address of the uplink data of the user, encapsulates the uplink OTT-TV service into a UDP/IP channel and sends the uplink OTT-TV service into an uplink channel of a bidirectional network; and filtering and restoring local OTT-TV service data from the arrived downlink service according to the multicast channel information distributed by the network, and then forwarding the local OTT-TV service data to the terminal user in the local area network.
The terminal intelligent gateway initiates a registration application to the intelligent data office terminal and confirms the distributed IP address and the IP broadcast channel characteristic value. After the registration is passed, the message is filtered through the distributed broadcast channel and the characteristic value. The intelligent data office end supports the aging function of the user terminal, and releases the mapping address and other resources occupied by the terminal as long as the downlink or uplink direction does not receive the related data message for a period of time, so as to provide OTT-TV service for more users.
There are two methods for mapping IP addresses, one is the way that each user terminal maps different IP addresses; the second one is that multiple user terminals map the same IP address, but differentiate the terminals by different UDP port numbers when encapsulating UDP/IP channels. Both ways are within the scope of protection of this patent.
The UDP/IP channel address may be defined by a combination of several parameters in a network packet five-tuple (source MAC, destination MAC, source IP, destination IP, and destination port number), where the combination of the destination IP address plus the destination port number is a common example, including but not limited thereto.
The transmission layer message of the IP broadcast channel can also adopt a TCP protocol, namely TCP/IP channel encapsulation is carried out.
Fig. 1 shows a transmission network diagram based on a GPON optical network according to the present solution, in which 10G intelligent data office end equipment is added at an OLT position of the GPON network to cooperate with the OLT, and a 10G intelligent terminal gateway is added at an ONU position of the GPON network to cooperate with the ONU; and a 10G IP broadcast channel is added in a mode of overlapping 1550nm wavelength, and a transmission medium is shared by a Wavelength Division Multiplexing (WDM) and a GPON optical network to construct the transmission network of the scheme. The OLT and the ONU are in bidirectional transmission, the downlink and uplink bandwidths are 2.5G/1.25Gbps, the superposition channel is in single downlink broadcast transmission, and the bandwidth is 10Gbps, so that the final uplink and downlink bandwidth of the whole transmission system is 1.25Gbps/12.5G, the downlink bandwidth is improved by 400%, and the effect is obvious.
As shown in fig. 2, a flow path diagram of a single user terminal of the OTT-TV service in the present scheme is shown, a logic channel with an example superposition is shown on the right side, and the OTT-TV service performs service communication according to a label sequence. The description is as follows:
step 1, an OTT-TV user initiates a service application to an OTT-TV platform, the destination address of the application message is an OTT-TV server, the source address is an OTT-TV user, and the application message is sent to a terminal intelligent gateway through a home network;
and 2, the intelligent gateway of the terminal identifies and filters the OTT-TV uplink message according to the characteristic that the IP destination address of the message is the address of the OTT server, and integrally encapsulates the OTT-TV uplink message as a load to a UDP/IP channel with the destination address being the IP address of the intelligent data office end, and sends the OTT-TV uplink message to the intelligent data office end through the uplink channel of the bidirectional network.
Step 3, the intelligent data office end receives the OTT-TV uplink message, strips the outer UDP/IP package, records the related information of the message, maps and updates the source IP address of the original message into the NNI address of the intelligent data office end, and then transmits the NNI address to the OTT-TV service platform through the transmission network;
the OTT-TV service platform receives the uplink service message and responds, wherein the destination IP address of the response message is the NNI address of the intelligent data office end, and the source address is the OTT-TV platform address;
and step 4, the intelligent data office side receives the response message of the OTT-TV platform, firstly updates the IP destination address of the downlink OTT-TV service message into the IP address of the OTT-TV user according to the recorded and stored uplink message information, and then sends the message to the network terminal through a GPON channel or a superposition logic channel according to a preset bandwidth allocation scheme. When a GPON channel is selected for transmission, the local side directly sends the downlink message with the updated header to the terminal; when the overlay logic channel is selected for transmission, the local side will package the downlink message with the updated header as a load to the UDP/IP multicast channel, and the destination address is a multicast address allocated when the network terminal is applied for registration. Due to the broadcast characteristic, all user terminals can receive the message, and only the corresponding registered terminal can correctly analyze the message content.
And 5, after receiving the OTT-TV downlink message by the terminal intelligent gateway through the superposition logic channel, stripping the outer UDP/IP multicast channel encapsulation, and forwarding the OTT-TV downlink message to the OTT-TV terminal through the home network.
Fig. 3 depicts a service function block diagram of an intelligent data office end of an OTT-TV transmission system according to a preferred embodiment of the present invention.
For OTT-TV uplink messages, after receiving the OTT-TV uplink messages by a UDP/IP channel with the destination address as the IP address of the intelligent data office end, the intelligent data office end peels off the UDP/IP encapsulation, records the related information of the messages to an OTT registration information table, updates the user IP mapping in the source IP address of the original messages to the NNI address of the intelligent data office end, and then sends the NNI address to a transmission network through an optical interface;
for OTT-TV downlink messages, the intelligent data office terminal identifies the OTT-TV messages according to the OTT server list and the source IP addresses of the messages arrived from the OTT-TV platform. And then updating the IP destination address of the OTT-TV downlink message into a user IP address according to the recorded and stored uplink message information, and then sending the message to the terminal from a GPON channel or a superposition logic channel according to a preset bandwidth allocation scheme. When a GPON channel is selected for sending, the intelligent data office side can directly forward the downlink message with the updated header to the OLT for sending; when the superposition logic channel is selected for transmission, the downlink message with the updated header is encapsulated to a corresponding UDP/IP multicast channel as a load according to the multicast channel information table, and is sent to the superposition broadcast logic channel through the optical interface.
For other non-OTT-TV uplink messages, the intelligent data office side directly and transparently forwards the messages and sends the messages to a transmission network.
For other non-OTT-TV downlink messages, the intelligent data office end identifies the messages as non-OTT-TV messages according to the OTT server list, and then directly sends the messages to the OLT and transmits the messages by the GPON channel.
Fig. 4 depicts a service function block diagram of a terminal intelligent gateway of an OTT-TV transmission system according to a preferred embodiment of the present invention.
The terminal intelligent gateway identifies and filters the OTT-TV uplink message from the user terminal according to the OTT server list, and integrally encapsulates the OTT-TV uplink message as a load to a UDP/IP channel with a destination address being an IP address of an intelligent data local side, and sends the OTT-TV uplink message and the non-OTT message to the ONU and the ONU to the local side through an uplink channel of a bidirectional network channel.
And for the downlink message, the terminal intelligent gateway receives the local OTT-TV service according to the multicast channel information table, then strips the UDP/IP multicast channel encapsulation, and sends the OTT-TV downlink message out from the home network interface.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. An OTT-TV transmission system is characterized in that the system comprises a bidirectional network, an intelligent data local side and a terminal intelligent gateway; the intelligent data office end and the terminal intelligent gateway form a point-to-multipoint broadcast channel, the broadcast channel is superposed to a bidirectional network channel, and the downlink video program stream of the OTT-TV is distributed to the broadcast channel through the intelligent data office end.
2. The OTT-TV transmission system according to claim 1, wherein the intelligent data office is configured to initiate an OTT-TV service application to the OTT-TV server and receive an OTT-TV video service in place of the end user.
3. The OTT-TV transmission system according to claim 1, wherein the interactive transmission of the OTT-TV service is completed by mapping and updating the IP addresses of the uplink and downlink messages of the OTT-TV.
4. An OTT-TV transmission system according to claim 2,
the terminal intelligent gateway receives an uplink OTT-TV message from a user, identifies and filters the OTT-TV uplink message according to the IP destination address of the uplink OTT-TV message, re-encapsulates the OTT uplink message to a UDP/IP channel with the destination address as the intelligent data office end, and sends the OTT uplink message to the intelligent data office end through an uplink of the bidirectional network;
the intelligent data office side receives the OTT-TV uplink message after being encapsulated again, strips UDP/IP channel encapsulation, and then maps and updates the IP address of the OTT-TV uplink message source after being encapsulated again into a network side interface (NNI) address of the intelligent data office side and sends the address to the OTT server;
the intelligent data bureau receives downlink OTT-TV video data and OTT-TV downlink messages of the OTT-TV server, and identifies and filters the OTT-TV downlink messages according to the IP source address of the messages;
mapping the IP destination address of the OTT-TV downlink message back to the IP address of the OTT-TV service request user, packaging the updated message to an allocated UDP/IP multicast channel, and transmitting the updated message to the terminal intelligent gateway through an IP broadcast channel;
and after filtering the local OTT message by the appointed UDP/IP channel, the terminal intelligent gateway strips the UDP/IP multicast encapsulation, and sends the message to OTT-TV terminal video equipment for playing through the local network, thereby completing the interaction of OTT-TV video services.
5. An OTT-TV transmission system according to claim 4, wherein the UDP/IP channel address is set to be defined by a combination of one or more parameters in a network packet five-tuple (source MAC, destination MAC, source IP, destination IP and destination port number).
6. The OTT-TV transmission system according to claim 4, wherein the intelligent data office side periodically broadcasts the OTT server list, the multicast channel allocation information table, the OTT-TV registry and other basic management control information to all terminal intelligent gateways by agreeing a UDP/IP main channel;
after the terminal intelligent gateway is electrified, the basic service information is automatically and periodically received, stored and updated, and identification, filtration, UDP/IP encapsulation and forwarding inside the home network of the OTT-TV service are finished according to the basic service information;
the intelligent data office end completes the identification, filtration, UDP/IP encapsulation and forwarding to the external network of the OTT-TV service according to the service information such as the OTT-TV server list, the multicast channel distribution information table, the OTT-TV registration table and the like.
7. An OTT-TV transmission system according to claim 1, wherein the intelligent data office intelligently and dynamically allocates the transport of OTT-TV service data between the bidirectional network downstream channel and the superimposed broadcast channel depending on the network traffic conditions.
8. An OTT-TV transmission system as claimed in claim 1, wherein when the bidirectional network is wired access, the physical channel of the superimposed broadcast channel is selected from one of an optical fibre, an optical wavelength channel or a radio frequency carrier channel.
9. An OTT-TV transmission system according to claim 1, wherein when the bidirectional network is wireless access, the superimposed broadcast channel is set to wireless mode.
10. An OTT-TV transmission method is characterized by comprising the following steps:
an OTT-TV user initiates a service application to an OTT-TV platform, the IP destination address of the application message is an OTT-TV server, the source address is an OTT-TV user, and the application message is sent to a terminal intelligent gateway through a home network;
the terminal intelligent gateway identifies and filters OTT-TV uplink messages according to the characteristic that the IP destination address of the messages is the address of the OTT-TV server, and integrally packages the OTT-TV uplink messages as loads to a UDP/IP channel with the destination address being the IP address of an intelligent data office end, and sends the OTT-TV uplink messages to the intelligent data office end through an uplink channel of a bidirectional network;
the intelligent data office side receives the OTT-TV uplink message, strips the outer UDP/IP encapsulation, records the related information of the message, maps and updates the source IP address of the original message into the NNI address of the intelligent data office side, and then sends the NNI address to the OTT-TV service platform through the transmission network;
the OTT-TV service platform receives the uplink service message and responds, wherein the destination IP address of the response message is the NNI address of the intelligent data office end, and the source address is the OTT-TV platform address;
the intelligent data office end receives the response message of the OTT-TV platform, updates the destination address of the message into the IP address of the user, and then sends the message to the network terminal through a GPON channel or a superposition logic channel according to a preset bandwidth allocation scheme; when a GPON channel is selected for transmission, the local side directly sends the downlink message with the updated header to the terminal; when the superposition logic channel is selected for transmission, the local side will package the downlink message with the updated header as a load to the UDP/IP multicast channel, and the destination address is the multicast address allocated when the corresponding network terminal is registered and applied. Due to the broadcast characteristic, all user terminals can receive the message, and only the corresponding registered terminal can correctly analyze the message content through the multicast channel identifier;
after receiving the OTT-TV downlink message by the superposition logic channel, the network terminal intelligent gateway strips the outer UDP/IP multicast channel encapsulation and forwards the OTT-TV downlink message to the OTT-TV terminal by the home network.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112261514A (en) * | 2020-10-22 | 2021-01-22 | 中国联合网络通信集团有限公司 | Service processing method, device and equipment |
| CN112738661A (en) * | 2020-12-15 | 2021-04-30 | 广西广播电视信息网络股份有限公司 | Method for realizing bidirectional downlink acceleration on broadcast channel of I-PON (input-output passive optical network) |
| CN115102799A (en) * | 2021-03-04 | 2022-09-23 | 北京吉视汇通科技有限责任公司 | Bidirectional data service processing method and system based on I-PON |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110197223A1 (en) * | 2010-02-11 | 2011-08-11 | Dheeraj Ravula | Emergency alert system for video on demand viewers |
| CN102843655A (en) * | 2011-06-20 | 2012-12-26 | 普天信息技术研究院有限公司 | Method for implementing real-time transmission of intra-group broadband multimedia cluster service |
| CN103986945A (en) * | 2014-05-27 | 2014-08-13 | 华为技术有限公司 | Hybrid network system, channel content replay method and hybrid set top box |
| US20150016475A1 (en) * | 2013-07-11 | 2015-01-15 | Qualcomm Incorporated | Method and apparatus for efficient packet compression |
| CN107579996A (en) * | 2017-09-30 | 2018-01-12 | 北京吉视汇通科技有限责任公司 | Multimedia network data processing system |
-
2020
- 2020-05-15 CN CN202010412429.7A patent/CN111615004A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110197223A1 (en) * | 2010-02-11 | 2011-08-11 | Dheeraj Ravula | Emergency alert system for video on demand viewers |
| CN102843655A (en) * | 2011-06-20 | 2012-12-26 | 普天信息技术研究院有限公司 | Method for implementing real-time transmission of intra-group broadband multimedia cluster service |
| US20150016475A1 (en) * | 2013-07-11 | 2015-01-15 | Qualcomm Incorporated | Method and apparatus for efficient packet compression |
| CN103986945A (en) * | 2014-05-27 | 2014-08-13 | 华为技术有限公司 | Hybrid network system, channel content replay method and hybrid set top box |
| CN107579996A (en) * | 2017-09-30 | 2018-01-12 | 北京吉视汇通科技有限责任公司 | Multimedia network data processing system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112261514A (en) * | 2020-10-22 | 2021-01-22 | 中国联合网络通信集团有限公司 | Service processing method, device and equipment |
| CN112261514B (en) * | 2020-10-22 | 2022-09-13 | 中国联合网络通信集团有限公司 | Service processing method, device and equipment |
| CN112738661A (en) * | 2020-12-15 | 2021-04-30 | 广西广播电视信息网络股份有限公司 | Method for realizing bidirectional downlink acceleration on broadcast channel of I-PON (input-output passive optical network) |
| CN112738661B (en) * | 2020-12-15 | 2022-05-31 | 广西广播电视信息网络股份有限公司 | Method for realizing bidirectional downlink acceleration on broadcast channel of I-PON (input-output passive optical network) |
| CN115102799A (en) * | 2021-03-04 | 2022-09-23 | 北京吉视汇通科技有限责任公司 | Bidirectional data service processing method and system based on I-PON |
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