CN112202885A - Film digital copy satellite distribution system and method supporting efficient package supplement - Google Patents
Film digital copy satellite distribution system and method supporting efficient package supplement Download PDFInfo
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- CN112202885A CN112202885A CN202011060035.6A CN202011060035A CN112202885A CN 112202885 A CN112202885 A CN 112202885A CN 202011060035 A CN202011060035 A CN 202011060035A CN 112202885 A CN112202885 A CN 112202885A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/104—Peer-to-peer [P2P] networks
- H04L67/1074—Peer-to-peer [P2P] networks for supporting data block transmission mechanisms
- H04L67/1078—Resource delivery mechanisms
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/20—Adaptations for transmission via a GHz frequency band, e.g. via satellite
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention relates to a film digital copy satellite distribution system and a method supporting efficient packet supplementing, which improve the overall packet supplementing efficiency under a satellite channel and reduce the time required by the receivers for receiving and completing by fusing the packet supplementing operation of the satellite channel into the normal transmission process, and simultaneously schedule the mutual packet supplementing data transmission among the receivers by fully utilizing the data received by the receivers and the idle network bandwidth by combining a p2p data transmission structure established among the receivers, thereby further reducing the time required by the completion of the packet supplementing.
Description
Technical Field
The invention relates to the technical field of film copy transmission, in particular to a film digital copy satellite distribution system and a method supporting efficient package supplement.
Background
In the process of transmitting the film by the satellite, due to the influence of weather factors, satellite signals are lost, so that films received by film receivers in various regions are lost, and the problem of packet supplement is involved. The prior art generally has two filling strategies: one is that the lost data of all the film receivers are merged through a satellite channel and then are uniformly sent once; the other is to reissue the lost data of each movie receiver through a network channel.
For the method adopting the satellite channel packet supplementing, because packet loss is a problem existing in each receiver generally, the situation that the sum of the lost data of all the receivers is close to the original data can occur, all the receivers are difficult to receive completely even if packet supplementing is carried out for many times, and meanwhile, the satellite communication traffic is large; when the network channel is adopted for packet supplement, because the volume of the movie copies is large, sending 3 to 4 movie copies each time may involve sending data volume of about 500G, and the pressure on the data server is very large only by a certain data center corresponding to all receivers to perform network channel packet supplement, so that the time required by all receivers to receive completely is long, and the overall efficiency is very low.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides a film digital copy satellite distribution system and a film digital copy satellite distribution method supporting efficient packet supplementing, which improve the overall packet supplementing efficiency under a satellite channel and reduce the time required by the receivers to finish receiving by fusing the packet supplementing operation of the satellite channel into a normal transmission process, and simultaneously schedule the mutual packet supplementing data transmission among the receivers by fully utilizing the data received by the receivers and the idle network bandwidth by combining a p2p data transmission structure established among the receivers, thereby further reducing the time required by the completion of the packet supplementing.
In order to achieve the above purpose, the technical scheme adopted by the invention comprises the following steps:
a film digital copy satellite distribution system supporting efficient repacking is characterized by comprising a satellite broadcasting service terminal, a network service terminal, a p2p service terminal and a plurality of receivers;
the satellite broadcast service terminal is connected with the receiver through satellite channel data and sends movie digital copy data to the receiver;
the network service terminal is connected with the receiver through network channel data and sends movie digital copy data to the receiver;
the p2p service terminal is connected with the receivers and provides p2p service for the receivers;
the receiver comprises a data receiving module, a packet loss feedback module and a packet supplementing processing module; the packet loss feedback module generates packet loss information in real time according to the serial number sequence of the film digital copy data sent by the satellite broadcast service terminal; and the packet supplementing processing module generates a packet supplementing task according to the packet loss information and respectively sends the packet supplementing task to the satellite broadcast service terminal, the network service terminal and/or the p2p service terminal.
Further, the satellite broadcast service terminal broadcasts and sends the packet supplementing data according to the received packet supplementing task.
Further, the network service terminal directionally sends the packet supplementing data according to the received packet supplementing task.
Further, the p2p service terminal matches the complementary packet tasks with different packet loss information, and establishes a p2p data transmission channel between two or more receivers which are successfully matched, so that the two or more receivers mutually transmit complementary packet data.
The invention also relates to a film digital copy satellite distribution method supporting efficient repacking, which is characterized by comprising the following steps of:
s1, the satellite broadcast service terminal broadcasts and sends the film digital copy data to all receivers through satellite channel data connection, and the broadcast sending film digital copy data is broadcast sending with data sequence serial numbers;
s2, the receiver receives the film digital copy data with data sequence number sent by the satellite channel, and generates packet loss information according to the data sequence number missing of the received film digital copy data;
s3, each receiver respectively generates a packet supplementing task according to the generated packet loss information, and sends the packet supplementing task to the satellite broadcast service terminal, the network service terminal and the p2p service terminal;
s4, the satellite broadcast service terminal and the network service terminal carry out packet supplementing data transmission according to the packet supplementing task, and the p2p service terminal establishes a p2p data transmission channel between different receivers according to the packet supplementing task.
Further, the step S4 includes the following sub-steps:
s41, the satellite broadcast service terminal simultaneously feeds back the lost film digital copy data as the repackage data and broadcasts the repackage data together with the subsequent film digital copy data to all the receivers aiming at 40 percent or more of the receivers;
s42, the network service terminal feeds back the lost movie digital copy data as the packet complementing data to the receiver with lost feedback at the same time aiming at the receivers with the quantity less than 40 percent;
s43, p2p service terminal matches the complementary packet task with different packet loss information, and establishes p2p data transmission channel between two or more receivers which are successfully matched, so that the two or more receivers mutually transmit complementary packet data.
Further, the sub-step S43 further includes: the p2p service terminal establishes p2p data transmission channels by preferentially matching receivers with short distance according to the distance of the geographical positions of the different receivers.
The invention has the beneficial effects that:
by adopting the film digital copy satellite distribution system and method supporting efficient packet supplementing, the packet supplementing process can be combined with each round of normal data sending process according to the data connection characteristics of the satellite channel, and the time for completing the integral receiving is greatly saved; establishing p2p data transmission channels between different receivers can make full use of received data and idle network bandwidth resources, and further accelerate the overall receiving completion time.
Drawings
Fig. 1 is a schematic structural diagram of a movie digital copy satellite distribution system supporting efficient repacking according to the present invention.
Fig. 2 is a schematic flow chart of a movie digital copy satellite distribution method supporting efficient repacking according to the present invention.
Detailed Description
For a clearer understanding of the contents of the present invention, reference will be made to the accompanying drawings and examples.
Fig. 1 is a schematic structural diagram of a film digital copy satellite distribution system supporting efficient complementary packages according to the present invention, which includes a satellite broadcast service terminal, a network service terminal, a p2p service terminal and a plurality of receivers, wherein the satellite broadcast service terminal is connected to the receivers through satellite channel data and transmits film digital copy data to the receivers, the network service terminal is connected to the receivers through network channel data and transmits film digital copy data to the receivers, and the p2p service terminal is connected to the receivers and provides p2p service between the receivers. The receiver comprises a data receiving module, a packet loss feedback module and a packet supplementing processing module, wherein the data receiving module is used for receiving the data of the movie digital copy; the data receiving module is used for receiving the movie digital copy data and judging whether the received data is complete and correct; the packet loss feedback module generates packet loss information in real time according to the serial number sequence (namely, the serial number of the movie file) of the movie digital copy data sent by the satellite broadcast service terminal; and the packet supplementing processing module generates a packet supplementing task according to the packet loss information and respectively sends the packet supplementing task to the satellite broadcast service terminal, the network service terminal and/or the p2p service terminal. According to the packet supplementing task, the satellite broadcast service terminal, the network service terminal and the p2p service terminal respectively execute different operations, the satellite broadcast service terminal sends the packet supplementing data according to the received packet supplementing task broadcast, the network service terminal directionally sends the packet supplementing data according to the received packet supplementing task, the p2p service terminal matches the packet supplementing tasks with different packet loss information, and a p2p data transmission channel is established between two or more receivers which are successfully matched, so that the two or more receivers mutually transmit the packet supplementing data. In actual operation, the packet loss feedback module and the packet supplement processing module both judge packet loss information along with the sending turn of the satellite broadcast service terminal and generate a packet supplement task, so that the packet supplement process is not required to be carried out after all the sending tasks of the satellite broadcast service terminal are finished, and the time required by data transmission can be effectively reduced; meanwhile, the method of establishing the p2p data transmission channel between the receivers is adopted, so that the idle bandwidth of each receiver can be effectively utilized, and the complete data transmission is further accelerated.
Preferably, the p2p service terminal may select a server supporting turn server service, so as to enable effective connection between receivers without public network addresses.
The invention also relates to a film digital copy satellite distribution method supporting efficient repacking, and the flow is shown in figure 2, and the method comprises the following steps:
s1, the satellite broadcast service terminal broadcasts and sends the film digital copy data to all receivers through satellite channel data connection, and the broadcast sending film digital copy data is broadcast sending with data sequence serial numbers;
s2, the receiver receives the film digital copy data with data sequence number sent by the satellite channel, and generates packet loss information according to the data sequence number missing of the received film digital copy data;
s3, each receiver respectively generates a packet supplementing task according to the generated packet loss information, and sends the packet supplementing task to the satellite broadcast service terminal, the network service terminal and the p2p service terminal;
s4, the satellite broadcast service terminal and the network service terminal perform packet complementing data transmission according to the packet complementing task, and the p2p service terminal establishes a p2p data transmission channel between different receivers according to the packet complementing task, preferably further comprising the sub-steps of: s41, the satellite broadcast service terminal simultaneously feeds back the lost film digital copy data as the repackage data and broadcasts the repackage data together with the subsequent film digital copy data to all the receivers aiming at 40 percent or more of the receivers; s42, the network service terminal feeds back the lost movie digital copy data as the packet complementing data to the receiver with lost feedback at the same time aiming at the receivers with the quantity less than 40 percent; s43 and p2p service terminals match with complementary packet tasks with different packet loss information, and establish p2p data transmission channels between two or more receivers which are successfully matched, so that the two or more receivers mutually transmit complementary packet data, and particularly, the p2p data transmission channels can be established between receivers which are preferentially matched and are close to each other.
The method can be applied to the system, provides high-efficiency pack supplementing operation for film digital copy satellite distribution, and greatly shortens the time required by receiving all data.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A film digital copy satellite distribution system supporting efficient repacking is characterized by comprising a satellite broadcasting service terminal, a network service terminal, a p2p service terminal and a plurality of receivers;
the satellite broadcast service terminal is connected with the receiver through satellite channel data and sends movie digital copy data to the receiver;
the network service terminal is connected with the receiver through network channel data and sends movie digital copy data to the receiver;
the p2p service terminal is connected with the receivers and provides p2p service for the receivers;
the receiver comprises a data receiving module, a packet loss feedback module and a packet supplementing processing module; the packet loss feedback module generates packet loss information in real time according to the serial number sequence of the film digital copy data sent by the satellite broadcast service terminal; and the packet supplementing processing module generates a packet supplementing task according to the packet loss information and respectively sends the packet supplementing task to the satellite broadcast service terminal, the network service terminal and/or the p2p service terminal.
2. The system of claim 1, wherein the satellite broadcasting service terminal broadcasts the complementary packet data according to the received complementary packet task.
3. The system of claim 1, wherein the network service terminal directionally transmits the complementary packet data according to the received complementary packet task.
4. The system of claim 1, wherein the p2p service terminal matches complementary packet tasks with different packet loss information, and establishes a p2p data transmission channel between two or more receivers that are successfully matched, so that the two or more receivers mutually transmit complementary packet data.
5. A satellite distribution method for supporting efficient package supplement of film digital copy, which is characterized by comprising the following steps:
s1, the satellite broadcast service terminal broadcasts and sends the film digital copy data to all receivers through satellite channel data connection, and the broadcast sending film digital copy data is broadcast sending with data sequence serial numbers;
s2, the receiver receives the film digital copy data with data sequence number sent by the satellite channel, and generates packet loss information according to the data sequence number missing of the received film digital copy data;
s3, each receiver respectively generates a packet supplementing task according to the generated packet loss information, and sends the packet supplementing task to the satellite broadcast service terminal, the network service terminal and the p2p service terminal;
s4, the satellite broadcast service terminal and the network service terminal carry out packet supplementing data transmission according to the packet supplementing task, and the p2p service terminal establishes a p2p data transmission channel between different receivers according to the packet supplementing task.
6. The method of claim 5, wherein the step S4 includes the sub-steps of:
s41, the satellite broadcast service terminal simultaneously feeds back the lost film digital copy data as the repackage data and broadcasts the repackage data together with the subsequent film digital copy data to all the receivers aiming at 40 percent or more of the receivers;
s42, the network service terminal feeds back the lost movie digital copy data as the packet complementing data to the receiver with lost feedback at the same time aiming at the receivers with the quantity less than 40 percent;
s43, p2p service terminal matches the complementary packet task with different packet loss information, and establishes p2p data transmission channel between two or more receivers which are successfully matched, so that the two or more receivers mutually transmit complementary packet data.
7. The method of claim 6, wherein the sub-step S43 further includes: the p2p service terminal establishes p2p data transmission channels by preferentially matching receivers with short distance according to the distance of the geographical positions of the different receivers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011060035.6A CN112202885A (en) | 2020-09-30 | 2020-09-30 | Film digital copy satellite distribution system and method supporting efficient package supplement |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011060035.6A CN112202885A (en) | 2020-09-30 | 2020-09-30 | Film digital copy satellite distribution system and method supporting efficient package supplement |
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| CN112202885A true CN112202885A (en) | 2021-01-08 |
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| CN202011060035.6A Pending CN112202885A (en) | 2020-09-30 | 2020-09-30 | Film digital copy satellite distribution system and method supporting efficient package supplement |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1881916A (en) * | 2005-06-17 | 2006-12-20 | 腾讯科技（深圳）有限公司 | Method and apparatus for realizing communication between communication equipments |
| CN101567794A (en) * | 2008-04-23 | 2009-10-28 | 中广电信有限公司 | Method and device for network transmission of digital movie |
| WO2010022653A1 (en) * | 2008-08-26 | 2010-03-04 | 华为技术有限公司 | Detecting method and terminal for transferring files |
| CN106330289A (en) * | 2015-06-19 | 2017-01-11 | 中广联合移动电视系统有限公司 | Big data satellite network transmission system |
-
2020
- 2020-09-30 CN CN202011060035.6A patent/CN112202885A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1881916A (en) * | 2005-06-17 | 2006-12-20 | 腾讯科技（深圳）有限公司 | Method and apparatus for realizing communication between communication equipments |
| CN101567794A (en) * | 2008-04-23 | 2009-10-28 | 中广电信有限公司 | Method and device for network transmission of digital movie |
| WO2010022653A1 (en) * | 2008-08-26 | 2010-03-04 | 华为技术有限公司 | Detecting method and terminal for transferring files |
| CN106330289A (en) * | 2015-06-19 | 2017-01-11 | 中广联合移动电视系统有限公司 | Big data satellite network transmission system |
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