CN105357088B - Efficient system network transfer method under the interactive medium service environment of cloud framework - Google Patents

Efficient system network transfer method under the interactive medium service environment of cloud framework Download PDF

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Publication number
CN105357088B
CN105357088B CN201510819186.8A CN201510819186A CN105357088B CN 105357088 B CN105357088 B CN 105357088B CN 201510819186 A CN201510819186 A CN 201510819186A CN 105357088 B CN105357088 B CN 105357088B
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data
channel
information
top box
user
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CN105357088A (en
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涂代锴
张宏纲
赵志峰
周逸凡
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Zhejiang University ZJU
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2854Wide area networks, e.g. public data networks
    • H04L12/2856Access arrangements, e.g. Internet access
    • H04L12/2869Operational details of access network equipments
    • H04L12/2878Access multiplexer, e.g. DSLAM
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/66Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00Network arrangements, protocols or services for addressing or naming
    • H04L61/09Mapping addresses
    • H04L61/25Mapping addresses of the same type
    • H04L61/2503Translation of Internet protocol [IP] addresses

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The present invention discloses the efficient system network transfer method under a kind of interactive medium service environment of cloud framework, to include: (1) user's set-top box send to the data Layer of gateway include authentication and registration information data packet, data Layer carries out classification and address conversion to the data packet received, then data Layer extracts the information in data packet and is sent to the control layer of gateway, and control layer carries out Signalling exchange and certification with server according to the information received and registration interacts;(2) user's set-top box issues service requesting information to data Layer, the control layer of gateway distributes corresponding down going channel and notification data layer from the service requesting information of data Layer based on the received, and data Layer carries out business datum to send business datum to user's set-top box according to the down going channel distributed after classification and address conversion.The present invention optimizes scheduling to converged network resource, and the efficiency of improve data transfer provides the data channel ensured with QoS for business datum.

Description

Efficient system network transfer method under the interactive medium service environment of cloud framework
Technical field
The present invention relates to efficient system network transfer methods under the interactive medium service environment of cloud framework.
Background technique
Divide the arrival with cloud computing era, moves towards content magnanimity, experience personalization, high definition interaction in media industry During change, terminal are diversified, the big element-content of the three of broadcasting media, network, terminal etc. have occurred deep Variation.Content is more abundant, and it is more various to cover the Duo kind Fang Shi ﹔ network such as sound, view, figure, text, covering broadcasting and TV, telecommunications and mutually A variety of defeated hand section ﹔ terminals of biography such as networking are more ubiquitous, penetrate into the multiple terminals such as TV, mobile phone, PC and tablet computer. How to fill using cloud computing bring technological revolution, constantly reduce the construction and management cost of media network, user is continuously improved Experience, finally promotes returns of investment, is the new project of one faced of our current media industries.
Cloud computing is more and more widely used in broadcasting and TV media services field, but " cloud, pipe, end " synchronized construction, extensively A large amount of energy has poured into " cloud " and " end " at present in electric network company, has ignored the importance of " pipe " to a certain extent, herein By inquiring into application of the efficient cooperative transmission in broadcasting and TV video cloud service, it is desirable to a variety of transmission modes of fusion.Channel is built If carrying out beneficial discussion.
Various regions TV in CATV network company is relied on for many years in interactive TV, direct broadcast band, broadband access, IDC data at present The rich experiences of the fields such as center accumulation, numerous and confused building have industry characteristic, at the same embody media services feature, it is compatible it is advanced, Efficiently, safe, controllable " media cloud ".Specifically, " media cloud " contains " media cloud " platform and " media cloud " service two A level.
Media cloud platform has open, compatible, safety based on high standard, schedulable, telescopic cloud computing center The characteristics of, with the completion of cloud platform construction and becoming increasingly popular for cloud service, the evolution side of cooperation Intelligent Terminal, OTTization etc. To, the operation mode basic forming of " Yun Guanduan " cooperative development, but the problem of high-speed transfer pipeline, becomes increasingly conspicuous, it would be highly desirable to it solves big The high efficiency of transmission problem of granularity high-bandwidth video service, in order to preferably solve this problem, it is necessary to comprehensively utilize two-way IP The channel (Internet Protocol) and HFC(Hybrid Fiber-Coaxial) channel mixed networking advantage, using wide The characteristics of broadcasting net " single-geophone receiver, the whole network covering ", is aided with the individualized feature of IP tunnel two-way interactive, realizes synthetic media service The efficient system of content transmits.
Summary of the invention
The object of the present invention is to provide the efficient system network transmissions under a kind of interactive medium service environment of cloud framework Method.
To achieve the above object, the technical solution used in the present invention is: the interactive medium service of cloud framework of the present invention Efficient system network transfer method under environment includes the following steps:
(1) user's set-top box sends the data packet comprising authentication and registration information to the data Layer of gateway, and gateway is set Standby data Layer carries out classification and address conversion to the data packet received, and the information that then data Layer extracts in data packet is concurrent Give the control layer of gateway, control layer based on the received information and server carry out Signalling exchange and certification and Registration interaction;
(2) user's set-top box issues service requesting information to the data Layer of gateway, the control layer of gateway according to The received service requesting information from data Layer distributes corresponding down going channel and notification data layer, and data Layer is to industry Business data carry out classification and send business datum to user's set-top box according to the down going channel distributed with after address conversion.
Further, data Layer of the present invention includes channel data adapter, classifier modules, NAT module and data It receives and sending module, the control layer includes Signalling exchange module, AAA client and SM/PS client;In the step (1) in, user's set-top box sends the data packet comprising authentication and registration information, classifier modules to the channel data adapter The data packet received to channel data adapter is classified, the data packet that NAT module receives channel data adapter Carry out address conversion;Data receiver and sending module extract that channel data adapter receives and categorized and address conversion Information in data packet is simultaneously sent to the Signalling exchange module, AAA client and SM/PS client, Signalling exchange module root Signalling exchange is carried out according to received information and server, and the AAA client and SM/PS client are respectively according to being received To information and the server interaction that is authenticated and registered.
Further, data receiver of the present invention and sending module further include overtime timer, and the control layer also wraps Include path management module and channel controller;
The step (2) includes:
Step 1): user's set-top box sends the data packet comprising service requesting information, number to the channel data adapter The information in data packet received by channel data adapter is extracted with sending module according to reception and is sent to channel management mould Block, path management module select corresponding down going channel and issue application channel to channel controller to provide according to service requesting information The request in source, the down going channel include IP tunnel and the channel HFC, and channel controller is distributed according to the request of path management module Corresponding down going channel simultaneously notifies channel data adapter;Then, data receiver and sending module will according to service requesting information Business datum deposit buffer area simultaneously starts overtime timer, and classifier modules classify to the business datum in buffer area, NAT Module carries out address conversion to the business datum in buffer area, under the channel data adapter is distributed by channel controller Row of channels is sent to user's set-top box by classifying and the business datum after address conversion;
Step 2: user's set-top box receive through classification and address conversion after business datum after to the channel data Adapter sends ACK or NAK, and ACK or NAK are sent to data receiver and sending module again by channel data adapter;
Step 3): if that data receiver and sending module receive is ACK, the business datum of buffer area is deleted;
If that data receiver and sending module receive is NAK, alternatively, data receiver and sending module are more than time-out timing The time of device setting had not both received ACK or had not received NAK, then data receiver judges whether business datum reaches with sending module The preset number of retransmissions upper limit: if reaching the number of retransmissions upper limit, data receiver and sending module are cancelled to user's set-top box hair Send business datum;Otherwise, data receiver and sending module retransmit in buffer area to user's set-top box by classification and address conversion Business datum afterwards, and it is again started up overtime timer, and return step 2).
Compared with prior art, the beneficial effects of the present invention are: the association for passing through building fusion IP duplex channel and the channel HFC Same network transfer method realizes colleges and universities' transmission for the asymmetric bidirectional data path of media services content.Based on IP and In the multichannel coordinated Transmission system of HFC, upstream data is transmitted by IP duplex channel, and downlink data then can be bis- by IP It is issued to channel or the channel HFC.It is two-way for merging IP positioned at the front end in the channel HFC as the gateway of user's set-top box With the channel the HFC channel Liang Zhong, NAT forwarding is carried out to IP data packet;For server-side to the data in terminal direction, determined by channel Plan mechanism, selects suitable down going channel, and is packaged packing using corresponding tunneling, wherein down going channel includes IP tunnel and the channel HFC.Since the channel HFC has the characteristic of unidirectional order-preserving, can be counted for this characteristic in the channel HFC According to the optimization of reliable transmission.The present invention is based on the characteristics of converged network, optimize scheduling to the resource of the network of fusion, improve The efficiency of data transmission provides the data channel ensured with QoS for business datum.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the efficient transmission system under the interactive medium service environment of cloud framework of the invention.
Specific embodiment
The present invention constructs the efficient system network transfer method under the interactive medium service environment of cloud framework, this method Multichannel transmission system based on IP and HFC is realized.In the Transmission system, gateway is located at the front end in the channel HFC, is used for It merges that IP is two-way and the channel the HFC channel Liang Zhong, NAT forwarding is carried out to IP data packet;For server-side to the data in terminal direction, By channel decision-making mechanism, suitable down going channel is selected, and packing is packaged using corresponding tunneling, wherein downlink is logical Road includes IP tunnel and the channel HFC;Characteristic based on converged network optimizes scheduling to the resource of the network of fusion, improves The efficiency of data transmission provides the data channel ensured with QoS for business datum.
As shown in Figure 1, in the present invention, gateway includes two levels: control layer and data Layer.
(1) control layer
Control plane mainly include Signalling exchange module, frequency point management module, path management module, termination management module, AAA client module and SM/PS client modules etc..
(1) Signalling exchange module
Signalling exchange module be responsible for the Signalling exchange of terminal and server device, including it is endpoint to register, terminal keep-alive, logical The parsing and processing of the agreements such as configuration are passed through and are broadcast live in road management, NAT.
(2) path management module
Path management module is responsible for the management of channel information, the application/closing in channel, the traffic statistics in channel etc., and root Suitable down going channel, IP tunnel or the channel HFC or the channel IP+HFC are selected according to solicited message or service data information.
(3) AAA client module
AAA client module is responsible for interacting with aaa server, carries out the certification and charging of user, business.
(4) SM/PS client modules
SM/PS client modules are mainly responsible for and SM/PS(service management and strategic server) interaction and QoS plan The slightly management of information.The module is interacted with SM, carries out business identification;It is interacted with PS, obtains the qos policy of business, support push With pull two types, and the strategy of application is cached and managed, the operation such as inquiry, increase and deletion is provided.
(2) data Layer
Data plane mainly includes NAT module, classifier modules, data receiver and sending module, data priority scheduling Module and channel data adaptor module etc..
(1) NAT module
NAT module, which is mainly responsible for, carries out NAT conversion and inverse conversion, and management service address mapping relation to IP data packet, It is responsible for the distribution and recycling and the distribution of port and recycling etc. of virtual address.
(2) classifier modules
The main function of the module be according in data packet information (including source port, destination port, source IP, destination IP, TOS field etc.), classified to business data flow and is identified.
(3) data receiver and sending module
The module is mainly responsible for the complete IP data packet of three layers (network layers) for receiving downlink or more, to received IP data Packet carries out the parsing of four, five layer protocols, obtains using important informations such as data type, priority;The module is also responsible for IP data packet Transmission.
(4) channel data adaptor module
The major function of the module is in alignment with the data that preparation is sent and is packaged conversion and protocol adaptation, selected to adapt to Channel.The corresponding specific adapter in the channel of each type, mainly has HFC narrow broadcast channel adapter and IP tunnel suitable Orchestration, wherein HFC channel adapter will be packaged into TS packet according to DVB encapsulation format (MPE or ULE etc.) using data or IP packet, PSI/SI information is generated, the TS packet of generation is then sent to IPQAM equipment in the form of UDP;IP tunnel adapter will be applied Data are sent to terminal set top box by IP duplex channel in the form of IP packet.The module can also according to network insertion situation into Row extension, adds new channel adapter.
In the multichannel coordinated Transmission system the present invention is based on IP and HFC, upstream data is carried out by IP duplex channel Transmission, downlink data can then be issued by the half-duplex channel of IP duplex channel or HFC.Since the channel HFC has unidirectional order-preserving Characteristic, therefore, the present invention are directed to this characteristic in the channel HFC, optimize to the reliable transmission of data.The present invention is considered in base The data loss problem being likely to occur when IP tunnel and the channel HFC transmitting data, and use comprehensive and reliable mechanism It solves, is the optimization method for guaranteeing safe transmission under a kind of Novel Delivery mode based on IP and HFC.The interaction of cloud framework Efficient system network transmission process under media services environment includes the following steps:
Step (1): user's set-top box sends the data packet comprising authentication and registration information, net to the data Layer of gateway The data Layer for closing equipment carries out classification and address conversion to the data packet received, and then data Layer extracts the information in data packet And it is sent to the control layer of gateway, information carries out Signalling exchange with server and recognizes control layer based on the received Card and registration interaction.
Specifically, the data Layer of gateway may include channel data adapter, classifier modules, NAT module sum number It include Signalling exchange module, AAA client and SM/PS client according to reception and sending module, the control layer of gateway.User Set-top box sends the data packet comprising authentication and registration information to channel data adapter, and classifier modules are adapted to channel data The data packet that device receives is classified, and NAT module carries out address conversion to the data packet that channel data adapter receives;Number According to the information received in data packet received with sending module extraction channel data adapter and categorized and address conversion And be sent to Signalling exchange module, AAA client and SM/PS client, Signalling exchange module based on the received information with Server carries out Signalling exchange, and information is recognized with server based on the received respectively for AAA client and SM/PS client The interaction of card and registration.
Step (2): user's set-top box issues service requesting information, the control layer of gateway to the data Layer of gateway Corresponding down going channel and notification data layer, data Layer are distributed from the service requesting information of data Layer based on the received To business datum carry out classification and address conversion after according to the down going channel distributed to user's set-top box send business datum.Number It further include overtime timer according to receiving with sending module, control layer further includes path management module and channel controller.
Specifically, the step (2) can further comprise following steps:
Step 1): user's set-top box sends the data packet comprising service requesting information to channel data adapter, and data connect It receives and extracts the information in data packet received by channel data adapter with sending module and be sent to path management module, lead to Road management module selects corresponding down going channel according to service requesting information and issues application channel resource to channel controller Request, wherein down going channel includes IP tunnel and the channel HFC, and channel controller distributes phase according to the request of path management module The down going channel answered simultaneously notifies channel data adapter;Then, data receiver and sending module are according to service requesting information by industry Business data deposit buffer area simultaneously starts overtime timer, and classifier modules classify to the business datum in buffer area, NAT mould Block carries out address conversion, the down going channel that channel data adapter is distributed by channel controller to the business datum in buffer area It sends to user's set-top box by classifying and the business datum after address conversion.
Step 2: user's set-top box is received by classifying and the business datum backward channel data adaptation after address conversion Device sends ACK (Acknowledgement) or NAK (Negative Acknowledgment), and channel data adapter again will ACK or NAK are sent to data receiver and sending module.
Step 3): if that data receiver and sending module receive is ACK, the business datum of buffer area is deleted;
If that data receiver and sending module receive is NAK, alternatively, data receiver and sending module are more than time-out timing The time of device setting had not both received ACK or had not received NAK, then data receiver judges whether business datum reaches with sending module The preset number of retransmissions upper limit: if reaching the number of retransmissions upper limit, data receiver and sending module are cancelled to user's set-top box hair Send business datum;Otherwise, data receiver and sending module retransmit in buffer area to user's set-top box by classification and address conversion Business datum afterwards, and it is again started up overtime timer, and return step 2).

Claims (2)

1. the efficient system network transfer method under a kind of interactive medium service environment of cloud framework, which is characterized in that including Following steps:
(1) user's set-top box sends the data packet comprising authentication and registration information to the data Layer of gateway, gateway Data Layer carries out classification and address conversion to the data packet received, and then data Layer extracts the information in data packet and is sent to The control layer of gateway, information and server carry out Signalling exchange and certification and registration to control layer based on the received Interaction;
(2) user's set-top box issues service requesting information to the data Layer of gateway, and the control layer of gateway is according to being connect The service requesting information from data Layer received distributes corresponding down going channel and notification data layer, and data Layer is to business number Business datum is sent to user's set-top box according to the down going channel distributed with after address conversion according to classification is carried out;
The data Layer includes channel data adapter, classifier modules, NAT module and data receiver and sending module, described Control layer includes Signalling exchange module, AAA client and SM/PS client;In the step (1), user's set-top box is to institute It states channel data adapter and sends the data packet comprising authentication and registration information, classifier modules receive channel data adapter To data packet classify, the data packet that NAT module receives channel data adapter carries out address conversion;Data receiver Information and the transmission in data packet that channel data adapter receives and categorized and address conversion are extracted with sending module To the Signalling exchange module, AAA client and SM/PS client, Signalling exchange module information and clothes based on the received Business device carries out Signalling exchange, and information and server carry out based on the received respectively for the AAA client and SM/PS client The interaction of certification and registration.
2. the efficient system network transfer method under the interactive medium service environment of cloud framework according to claim 1, It is characterized by: the data receiver and sending module further include overtime timer, the control layer further includes channel management mould Block and channel controller;
The step (2) includes:
Step 1): user's set-top box sends the data packet comprising service requesting information to the channel data adapter, and data connect It receives and extracts the information in data packet received by channel data adapter with sending module and be sent to path management module, lead to Road management module selects corresponding down going channel according to service requesting information and issues application channel resource to channel controller Request, the down going channel include IP tunnel and the channel HFC, and channel controller distributes corresponding according to the request of path management module Down going channel and notify channel data adapter;Then, data receiver and sending module are according to service requesting information by business Data deposit buffer area simultaneously starts overtime timer, and classifier modules classify to the business datum in buffer area, NAT module Address conversion is carried out to the business datum in buffer area, the channel data adapter is logical by the downlink that channel controller distributes Road is sent to user's set-top box by classifying and the business datum after address conversion;
Step 2: user's set-top box is received to be adapted to after the business datum after address conversion to the channel data by classifying Device sends ACK or NAK, and ACK or NAK are sent to data receiver and sending module again by channel data adapter;
Step 3): if that data receiver and sending module receive is ACK, the business datum of buffer area is deleted;
If that data receiver and sending module receive is NAK, alternatively, data receiver and sending module are set more than overtime timer The fixed time had not both received ACK or had not received NAK, then data receiver judges whether business datum reaches default with sending module The number of retransmissions upper limit: if reaching the number of retransmissions upper limit, data receiver and sending module, which are cancelled to user's set-top box, sends industry Business data;Otherwise, data receiver and sending module retransmit in buffer area after classification and address conversion to user's set-top box Business datum, and it is again started up overtime timer, and return step 2).
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CN106973315B (en) * 2017-04-07 2023-11-21 广西广播电视信息网络股份有限公司 Broadcast television network multichannel intelligent scheduling transmission system and method based on user requirements
CN111464836B (en) * 2019-12-27 2021-09-21 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
TWI744002B (en) * 2020-09-22 2021-10-21 財團法人資訊工業策進會 Data transmission system and data transmission method
CN113438058B (en) * 2021-06-22 2022-11-25 中国科学院计算机网络信息中心 Data transmission method, device, network relay equipment and system

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