CN105357088A - Cloud-framework efficient system network transmission method under interactive media service environment - Google Patents
Cloud-framework efficient system network transmission method under interactive media service environment Download PDFInfo
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- CN105357088A CN105357088A CN201510819186.8A CN201510819186A CN105357088A CN 105357088 A CN105357088 A CN 105357088A CN 201510819186 A CN201510819186 A CN 201510819186A CN 105357088 A CN105357088 A CN 105357088A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2854—Wide area networks, e.g. public data networks
- H04L12/2856—Access arrangements, e.g. Internet access
- H04L12/2869—Operational details of access network equipments
- H04L12/2878—Access multiplexer, e.g. DSLAM
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/25—Mapping addresses of the same type
- H04L61/2503—Translation of Internet protocol [IP] addresses
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- Computer Networks & Wireless Communication (AREA)
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- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention discloses a cloud-framework efficient system network transmission method under an interactive media service environment. The method comprises 1) a user set top box sends data packets comprising authentication and registration information to a data layer of a gateway device, the data layer carries out classification and address translation on the received data packets, then, the data layer extracts the information in the data packets and sends the information to a control layer of the gateway device, and the control layer carries out signaling interaction and authentication and registration interaction with a server according to the received information; and 2) the user set top box sends service request information to the data layer, the control layer of the gateway device distributes corresponding down channel according to the service request information received from the data layer, and notifies the data layer, and the data layer sends service data to the user set top box according to the distributed down channel after carrying out classification and address translation on the service data. The method carries out optimal scheduling on the fusion network resource, improves data transmission efficiency and provides a data channel having QoS guarantee for the service data.
Description
Technical field
The present invention relates to efficient system network transfer method under the interactive medium service environment of cloud framework.
Background technology
Point along with the arrival in cloud computing epoch, move towards content magnanimity at media industry, experience personalized, high definition is interactive, in the diversified process of terminal, the aspects such as three large key element-content, network, terminals of broadcasting media all there occurs deep change.Content is abundanter, cover sound, depending on, scheme, the many kinds of square formula ﹔ networks such as literary composition are more various, cover the multiple biography defeated hand section ﹔ terminal such as broadcasting and TV, telecommunications and the Internet more ubiquitous, penetrate into the multiple terminals such as TV, mobile phone, PC and panel computer.How to fill the technological revolution utilizing cloud computing to bring, constantly reduce the Construction and management cost of media network, improving constantly Consumer's Experience, finally promote returns of investment, is face new problem of our current media industry.
Cloud computing is used more and more widely in broadcasting and TV media services field, but " cloud, pipe, end " synchronized construction, a large amount of energy has poured into " cloud " and " end " at present in CHINA RFTCOM Co Ltd company, have ignored the importance of " pipe " to a certain extent, herein by inquiring into the application of efficient cooperative transmission in the service of broadcasting and TV video cloud, wish merging multiple transmission means.Useful discussion is carried out in passage construction.
Current various places TV in CATV network company is relied on for many years in the rich experiences of the field accumulation such as interactive TV, direct broadcast band, broadband access, IDC data center, numerous and confused structure has industry characteristic, embodies media services feature, compatible advanced, efficient, safe, controlled " media cloud " simultaneously.Specifically, " media cloud " contains " media cloud " platform and serves two levels with " media cloud ".
Media cloud platform is with high standard, schedulable, based on telescopic cloud computing center, there is opening, compatible, the feature of safety, along with cloud platform construction to complete with cloud service day by day universal, coordinate Intelligent Terminal, the evolution tendency of OTTization etc., the operation mode basic forming of " cloud pipe end " cooperative development, but the problem of high-speed transfer pipeline becomes increasingly conspicuous, the high efficiency of transmission problem of bulky grain degree high-bandwidth video service urgently to be resolved hurrily, in order to better address this problem, two-way IP(InternetProtocol must be fully utilized) passage and HFC(HybridFiber-Coaxial) the mixed networking advantage of passage, utilize radio network " single-geophone receiver, the whole network cover " feature, be aided with the individualized feature of IP tunnel two-way interactive, realize the efficient system transmission of synthetic media service content.
Summary of the invention
The object of this invention is to provide the efficient system network transfer method under a kind of interactive medium service environment of cloud framework.
For achieving the above object, the technical solution used in the present invention is: the efficient system network transfer method under the interactive medium service environment of cloud framework of the present invention comprises the steps:
(1) subscriber computer top box sends to the data Layer of gateway device the packet comprising certification and log-on message, the data Layer of gateway device is classified and address transition to the packet received, then data Layer extracts the information in packet and sends to the key-course of gateway device, and it is mutual that key-course carries out Signalling exchange and certification and registration according to received information and server;
(2) subscriber computer top box sends service requesting information to the data Layer of gateway device, the key-course of gateway device distributes corresponding down going channel and notification data layer according to the received service requesting information coming from data Layer, and data Layer is classified to business datum and sent business datum according to distributed down going channel to subscriber computer top box after address transition.
Further, data Layer of the present invention comprises channel data adapter, classifier modules, NAT module and data receiver and sending module, and described key-course comprises Signalling exchange module, AAA client and SM/PS client; In described step (1), subscriber computer top box sends the packet comprising certification and log-on message to described channel data adapter, classifier modules is classified to the packet that channel data adapter receives, and NAT module carries out address transition to the packet that channel data adapter receives; Data receiver and sending module extract that channel data adapter receives and through classify and address transition packet in information and be sent to described Signalling exchange module, AAA client and SM/PS client, Signalling exchange module carries out Signalling exchange according to received information and server, and described AAA client and SM/PS client carry out the mutual of certification and registration according to received information and server respectively.
Further, data receiver of the present invention and sending module also comprise overtime timer, and described key-course also comprises path management module and channel controller;
Described step (2) comprising:
Step 1): subscriber computer top box sends the packet comprising service requesting information to described channel data adapter, data receiver and sending module extract the information in the packet received by channel data adapter and send to path management module, path management module is selected corresponding down going channel according to service requesting information and is sent the request of application channel resource to channel controller, described down going channel comprises IP tunnel and HFC passage, and channel controller is according to the corresponding down going channel of the request dispatching of path management module and notify channel data adapter; Then, business datum is started overtime timer stored in buffer area according to service requesting information by data receiver and sending module, classifier modules is classified to the business datum in buffer area, NAT module carries out address transition to the business datum in buffer area, and the down going channel that described channel data adapter is distributed by channel controller sends the business datum after classification and address transition to subscriber computer top box;
Step 2): subscriber computer top box sends ACK or NAK to described channel data adapter after receiving the business datum after classification and address transition, ACK or NAK is sent to data receiver and sending module by channel data adapter again;
Step 3): if data receiver and sending module receive is ACK, then delete the business datum of buffer area;
If that data receiver and sending module receive is NAK, or, data receiver and sending module exceed time that overtime timer sets and had not both received ACK and also do not receive NAK, then data receiver and sending module judge the number of retransmissions upper limit whether business datum reaches default: if reach the number of retransmissions upper limit, then data receiver and sending module are cancelled and sent business datum to subscriber computer top box; Otherwise data receiver and sending module retransmit the business datum through classifying and after address transition in buffer area to subscriber computer top box, and again start overtime timer, and return step 2).
Compared with prior art, the invention has the beneficial effects as follows: by building the contract network transmission method merging IP duplex channel and HFC passage, the colleges and universities realized for the asymmetric bidirectional data path of media services content transmit.Based in the multichannel coordinated transmission system of IP and HFC, upstream data is transmitted by IP duplex channel, and downlink data then issues by IP duplex channel or HFC passage.As the gateway device of subscriber computer top box, being positioned at the front end of HFC passage, for merging the two-way and HFC passage two kinds of passages of IP, NAT forwarding being carried out to IP packet; For service end to terminal side to data, by passage decision-making mechanism, select suitable down going channel, and adopt corresponding tunneling carry out encapsulation packing, wherein, down going channel comprises IP tunnel and HFC passage.Because HFC passage has the characteristic of unidirectional order-preserving, the optimization of reliable data transmission therefore can be carried out for this characteristic of HFC passage.The present invention is based on the characteristic of UNE, scheduling is optimized to the resource of the network merged, improve the efficiency of transfer of data, for business datum provides the data channel having QoS and ensure.
Accompanying drawing explanation
Fig. 1 is the structural representation of the efficient transmission system under the interactive medium service environment of cloud framework of the present invention.
Embodiment
The present invention constructs the efficient system network transfer method under the interactive medium service environment of cloud framework, and the method realizes based on the multichannel transmission system of IP and HFC.In this transmission system, gateway device is positioned at the front end of HFC passage, for merging the two-way and HFC passage two kinds of passages of IP, carries out NAT forwarding to IP packet; For service end to terminal side to data, by passage decision-making mechanism, select suitable down going channel, and adopt corresponding tunneling carry out encapsulation packing, wherein down going channel comprises IP tunnel and HFC passage; Based on the characteristic of UNE, scheduling is optimized to the resource of the network merged, improves the efficiency of transfer of data, for business datum provides the data channel having QoS and ensure.
As shown in Figure 1, in the present invention, gateway device comprises two aspects: key-course and data Layer.
(1) key-course
Control plane mainly comprises Signalling exchange module, frequency administration module, path management module, termination management module, AAA client modules and SM/PS client modules etc.
(1) Signalling exchange module
The Signalling exchange of Signalling exchange module in charge and terminal and server device, comprises endpoint registration, terminal keep-alive, channel management, NAT passes through and the parsing of the agreement such as live configuration and process.
(2) path management module
Path management module is responsible for the management of channel information, the application/closedown of passage, the traffic statistics etc. of passage, and selects suitable down going channel according to solicited message or service data information, IP tunnel or HFC passage or IP+HFC passage.
(3) AAA client modules
AAA client modules is responsible for aaa server mutual, carries out user, the certification of business and charging.
(4) SM/PS client modules
SM/PS client modules primary responsibility and SM/PS(service management and strategic server) mutual, and the management of qos policy information.This module and SM alternately, carry out traffic identification; Mutual with PS, obtain the qos policy of business, support push and pull two type, and buffer memory and management are carried out to the strategy of application, the operations such as inquiry, increase and deletion are provided.
(2) data Layer
Data plane mainly comprises NAT module, classifier modules, data receiver and sending module, data priority scheduler module and channel data adaptor module etc.
(1) NAT module
NAT module primary responsibility carries out NAT conversion and inverse conversion to IP packet, and management maintenance address mapping relation, be responsible for the allocate and recycle of virtual address and the allocate and recycle etc. of port.
(2) classifier modules
The Main Function of this module is according to the information (comprising source port, destination interface, source IP, object IP, TOS field etc.) in packet, carries out classifying and identify business data flow.
(3) data receiver and sending module
This module primary responsibility receives more than descending three layers (network layers) complete IP packet, carries out four, five layer protocols and resolves, obtain the important informations such as application data type, priority to the IP packet received; This module is also responsible for the transmission of IP packet.
(4) channel data adaptor module
The major function of this module carries out encapsulation transition and protocol adaptation to the data be ready for sending, to adapt to selected passage.The corresponding concrete adapter of the passage of each type, mainly contain HFC narrow broadcast channel adapter and IP tunnel adapter, wherein application data or IP bag are packaged into TS bag according to DVB encapsulation format (MPE or ULE etc.) by HFC channel adapter, generate PSI/SI information, then the TS of generation bag is sent to IPQAM equipment with the form of UDP; The form that application data is wrapped with IP is sent to terminal set top box by IP duplex channel by IP tunnel adapter.This module can also be expanded according to network insertion situation, adds new channel adapter.
In the multichannel coordinated transmission system that the present invention is based on IP and HFC, upstream data is transmitted by IP duplex channel, and downlink data then issues by the half-duplex channel of IP duplex channel or HFC.Because HFC passage has the characteristic of unidirectional order-preserving, therefore, the present invention is directed to this characteristic of HFC passage, the transmitting of data is optimized.Contemplated by the invention based on the data loss problem that may occur when IP tunnel and HFC passage transmitting data, and the mechanism comprehensively and reliably that have employed is solved, and is a kind of optimization method based on ensureing safe transmission under IP and HFC Novel Delivery pattern.Efficient system Internet Transmission flow process under the interactive medium service environment of cloud framework comprises the steps:
Step (1): subscriber computer top box sends to the data Layer of gateway device the packet comprising certification and log-on message, the data Layer of gateway device is classified and address transition to the packet received, then data Layer extracts the information in packet and sends to the key-course of gateway device, and it is mutual that key-course carries out Signalling exchange and certification and registration according to received information and server.
Specifically, the data Layer of gateway device can comprise channel data adapter, classifier modules, NAT module and data receiver and sending module, and the key-course of gateway device comprises Signalling exchange module, AAA client and SM/PS client.Subscriber computer top box sends the packet comprising certification and log-on message to channel data adapter, classifier modules is classified to the packet that channel data adapter receives, and NAT module carries out address transition to the packet that channel data adapter receives; Data receiver and sending module extract that channel data adapter receives and through classify and address transition packet in information and be sent to Signalling exchange module, AAA client and SM/PS client, Signalling exchange module carries out Signalling exchange according to received information and server, and AAA client and SM/PS client carry out the mutual of certification and registration according to received information and server respectively.
Step (2): subscriber computer top box sends service requesting information to the data Layer of gateway device, the key-course of gateway device distributes corresponding down going channel and notification data layer according to the received service requesting information coming from data Layer, and data Layer is classified to business datum and sent business datum according to distributed down going channel to subscriber computer top box after address transition.Data receiver and sending module also comprise overtime timer, and key-course also comprises path management module and channel controller.
Specifically, this step (2) can comprise the steps: further
Step 1): subscriber computer top box sends the packet comprising service requesting information to channel data adapter, data receiver and sending module extract the information in the packet received by channel data adapter and send to path management module, path management module is selected corresponding down going channel according to service requesting information and is sent the request of application channel resource to channel controller, wherein, down going channel comprises IP tunnel and HFC passage, and channel controller is according to the corresponding down going channel of the request dispatching of path management module and notify channel data adapter; Then, business datum is started overtime timer stored in buffer area according to service requesting information by data receiver and sending module, classifier modules is classified to the business datum in buffer area, NAT module carries out address transition to the business datum in buffer area, and the down going channel that channel data adapter is distributed by channel controller sends the business datum after classification and address transition to subscriber computer top box.
Step 2): subscriber computer top box receives the business datum backward channel data adapter unit after classification and address transition and sends ACK (Acknowledgement) or NAK (NegativeAcknowledgment), ACK or NAK is sent to data receiver and sending module by channel data adapter again.
Step 3): if data receiver and sending module receive is ACK, then delete the business datum of buffer area;
If that data receiver and sending module receive is NAK, or, data receiver and sending module exceed time that overtime timer sets and had not both received ACK and also do not receive NAK, then data receiver and sending module judge the number of retransmissions upper limit whether business datum reaches default: if reach the number of retransmissions upper limit, then data receiver and sending module are cancelled and sent business datum to subscriber computer top box; Otherwise data receiver and sending module retransmit the business datum through classifying and after address transition in buffer area to subscriber computer top box, and again start overtime timer, and return step 2).
Claims (3)
1. the efficient system network transfer method under the interactive medium service environment of cloud framework, is characterized in that, comprise the steps:
(1) subscriber computer top box sends to the data Layer of gateway device the packet comprising certification and log-on message, the data Layer of gateway device is classified and address transition to the packet received, then data Layer extracts the information in packet and sends to the key-course of gateway device, and it is mutual that key-course carries out Signalling exchange and certification and registration according to received information and server;
(2) subscriber computer top box sends service requesting information to the data Layer of gateway device, the key-course of gateway device distributes corresponding down going channel and notification data layer according to the received service requesting information coming from data Layer, and data Layer is classified to business datum and sent business datum according to distributed down going channel to subscriber computer top box after address transition.
2. the efficient system network transfer method under the interactive medium service environment of cloud framework according to claim 1, it is characterized in that: described data Layer comprises channel data adapter, classifier modules, NAT module and data receiver and sending module, described key-course comprises Signalling exchange module, AAA client and SM/PS client; In described step (1), subscriber computer top box sends the packet comprising certification and log-on message to described channel data adapter, classifier modules is classified to the packet that channel data adapter receives, and NAT module carries out address transition to the packet that channel data adapter receives; Data receiver and sending module extract that channel data adapter receives and through classify and address transition packet in information and be sent to described Signalling exchange module, AAA client and SM/PS client, Signalling exchange module carries out Signalling exchange according to received information and server, and described AAA client and SM/PS client carry out the mutual of certification and registration according to received information and server respectively.
3. the efficient system network transfer method under the interactive medium service environment of cloud framework according to claim 2, it is characterized in that: described data receiver and sending module also comprise overtime timer, described key-course also comprises path management module and channel controller;
Described step (2) comprising:
Step 1): subscriber computer top box sends the packet comprising service requesting information to described channel data adapter, data receiver and sending module extract the information in the packet received by channel data adapter and send to path management module, path management module is selected corresponding down going channel according to service requesting information and is sent the request of application channel resource to channel controller, described down going channel comprises IP tunnel and HFC passage, and channel controller is according to the corresponding down going channel of the request dispatching of path management module and notify channel data adapter; Then, business datum is started overtime timer stored in buffer area according to service requesting information by data receiver and sending module, classifier modules is classified to the business datum in buffer area, NAT module carries out address transition to the business datum in buffer area, and the down going channel that described channel data adapter is distributed by channel controller sends the business datum after classification and address transition to subscriber computer top box;
Step 2): subscriber computer top box sends ACK or NAK to described channel data adapter after receiving the business datum after classification and address transition, ACK or NAK is sent to data receiver and sending module by channel data adapter again;
Step 3): if data receiver and sending module receive is ACK, then delete the business datum of buffer area;
If that data receiver and sending module receive is NAK, or, data receiver and sending module exceed time that overtime timer sets and had not both received ACK and also do not receive NAK, then data receiver and sending module judge the number of retransmissions upper limit whether business datum reaches default: if reach the number of retransmissions upper limit, then data receiver and sending module are cancelled and sent business datum to subscriber computer top box; Otherwise data receiver and sending module retransmit the business datum through classifying and after address transition in buffer area to subscriber computer top box, and again start overtime timer, and return step 2).
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| CN106973315A (en) * | 2017-04-07 | 2017-07-21 | 广西广播电视信息网络股份有限公司 | CHINA RFTCOM Co Ltd multi-channel intelligent scheduled transmission system and method based on user's request |
| CN111464836A (en) * | 2019-12-27 | 2020-07-28 | 山东中科先进技术研究院有限公司 | Wired digital set-top box terminal network management method and system |
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| CN114301906A (en) * | 2020-09-22 | 2022-04-08 | 财团法人资讯工业策进会 | Data transmission system and data transmission method |
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