CN117793094A - Data transmission method, device, equipment and storage medium - Google Patents

Abstract

The application discloses a data transmission method, a device, equipment and a storage medium, which relate to the technical field of communication and are used for improving the data stream transmission efficiency of IPTV service and reducing network time delay. The method is applied to the operator server, the operator server corresponds to a plurality of edge routers, and the method comprises the following steps: the BIERv6 protocol is explicitly copied based on the bit index of the internet protocol 6 th edition package to obtain multicast video data; based on a multicast source discovery protocol MSDP and a protocol independent multicast PIM, forwarding multicast video data to a core router through an edge router, wherein the edge router is a router supporting a BIERv6 protocol, the core router is a router not supporting the BIERv6 protocol, and the core router is a router corresponding to a metropolitan area network. The method and the device are applied to the scene of transmitting the data stream of the IPTV service.

Description

Data transmission method, device, equipment and storage medium

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a data transmission method, apparatus, device, and storage medium.

Background

With the continuous development of multicast technology, network television (interactive personality TV, IPTV) services have been used by most users. Specifically, the data transmission mode corresponding to the current live broadcast service (an IPTV service) adopts a multicast relay mode, and converts multicast traffic from a media company into unicast traffic through a central server of an operator to forward the unicast traffic, so that the unicast traffic is forwarded to a metropolitan area network through a backbone network of the operator, and the metropolitan area network reconverts the received unicast traffic into multicast traffic, thereby realizing pushing data corresponding to the live broadcast service to a terminal device.

In the above method, if the two-trunk circuit between the backbone network of the operator and the metropolitan area network is completely disconnected, the backbone network of the operator cannot send unicast traffic to the metropolitan area network, the terminal device cannot receive multicast traffic from the metropolitan area network, and IPTV service is blocked comprehensively. And, the multicast traffic bypasses the backbone network of the operator, and performs the conversion between the multicast traffic and the unicast traffic and the multicast traffic, which may generate network delay. Thus, efficiency in implementing data streaming of IPTV service is low.

Disclosure of Invention

The application provides a data transmission method, a device, equipment and a storage medium, which are used for improving the data stream transmission efficiency of IPTV service and reducing network time delay.

In order to achieve the above purpose, the present application adopts the following technical scheme:

in a first aspect, a data transmission method is provided, applied to an operator server, where the operator server corresponds to a plurality of edge routers, and the method includes: the BIERv6 protocol is explicitly copied based on the bit index of the internet protocol 6 th edition package to obtain multicast video data; based on a multicast source discovery protocol MSDP and a protocol independent multicast PIM, forwarding multicast video data to a core router through an edge router, wherein the edge router is a router supporting a BIERv6 protocol, the core router is a router not supporting the BIERv6 protocol, and the core router is a router corresponding to a metropolitan area network.

In one possible implementation, the plurality of edge routers form a plurality of sets of leaf node routers, each set of leaf node routers in the plurality of sets of leaf node routers corresponding to a different metropolitan area network; based on the multicast source discovery protocol MSDP and the protocol independent multicast PIM, forwarding the multicast video data to the core router through the edge router comprises the following steps: and forwarding the multicast video data to a core router corresponding to any metropolitan area network through a group of leaf node routers corresponding to any metropolitan area network based on MSDP and PIM.

In one possible implementation manner, the operator server further corresponds to a plurality of root node routers, the root node routers are routers supporting the BIERv6 protocol, and data corresponding to the plurality of root node routers are backed up mutually; based on the multicast source discovery protocol MSDP and the protocol independent multicast PIM, before forwarding the multicast video data to the core router through the edge router, the method further comprises: based on BIERv6 protocol, multicast video data is forwarded to multiple groups of leaf node routers corresponding to different metropolitan area networks through any node router.

In a second aspect, a data transmission method is provided, applied to a metropolitan area network, where the metropolitan area network includes a core router and a broadband remote access server BRAS, and the method includes: based on MSDP and PIM, receiving multicast video data forwarded by an operator server through an edge router by a core router, wherein the edge router is a router supporting BIERv6 protocol, the core router is a router not supporting BIERv6 protocol, and the core router is a router corresponding to a metropolitan area network; based on the internet group management protocol IGMP, the multicast video data is forwarded to the terminal device through the BRAS.

In one possible implementation, before forwarding the multicast video data to the terminal device via the BRAS based on the internet group management protocol IGMP, the method further comprises: multicast video data is forwarded to the BRAS via the core router based on PIM.

In a third aspect, an operator server is provided, where the operator server corresponds to a plurality of edge routers, and the operator server includes: an acquisition unit and a forwarding unit; the acquisition unit is used for explicitly copying the BIERv6 protocol based on the bit index of the internet protocol version 6 encapsulation to acquire multicast video data; and the forwarding unit is used for forwarding the multicast video data to the core router through the edge router based on the multicast source discovery protocol MSDP and the protocol independent multicast PIM, wherein the edge router is a router supporting the BIERv6 protocol, the core router is a router not supporting the BIERv6 protocol, and the core router is a router corresponding to the metropolitan area network.

In one possible implementation, the plurality of edge routers form a plurality of sets of leaf node routers, each set of leaf node routers in the plurality of sets of leaf node routers corresponding to a different metropolitan area network; and the forwarding unit is used for forwarding the multicast video data to the core router corresponding to any metropolitan area network through a group of leaf node routers corresponding to any metropolitan area network based on MSDP and PIM.

In one possible implementation manner, the operator server further corresponds to a plurality of root node routers, the root node routers are routers supporting the BIERv6 protocol, and data corresponding to the plurality of root node routers are backed up mutually; and the forwarding unit is used for forwarding the multicast video data to a plurality of groups of leaf node routers corresponding to different metropolitan area networks through any node router based on the BIERv6 protocol.

In a fourth aspect, a metropolitan area network is provided, the metropolitan area network including a core router and a broadband remote access server BRAS, the metropolitan area network including: a receiving unit and a forwarding unit; the receiving unit is used for receiving multicast video data forwarded by the operator server through the edge router based on MSDP and PIM, wherein the edge router is a router supporting the BIERv6 protocol, the core router is a router not supporting the BIERv6 protocol, and the core router is a router corresponding to a metropolitan area network; and the forwarding unit is used for forwarding the multicast video data to the terminal equipment through the BRAS based on the Internet group management protocol IGMP.

In one possible implementation, the forwarding unit is configured to forward, via the core router, the multicast video data to the BRAS based on PIM.

In a fifth aspect, an electronic device includes: a processor and a memory; wherein the memory is configured to store one or more programs, the one or more programs comprising computer-executable instructions that, when executed by the electronic device, cause the electronic device to perform a data transmission method as in the first or second aspect.

In a sixth aspect, there is provided a computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by a computer, cause the computer to perform a data transmission method as in the first or second aspect.

The application provides a data transmission method, a device, equipment and a storage medium, which are applied to a scene of transmitting data streams of IPTV service. When the data stream of the IPTV service needs to be transmitted, the operator server can acquire the multicast video data to be transmitted based on the BIERv6 protocol, and forward the multicast video data to a core router which does not support the BIERv6 protocol and corresponds to the metropolitan area network through an edge router which supports the BIERv6 protocol and corresponds to the operator server based on MSDP and PIM, so that the metropolitan area network forwards the multicast video data to the terminal equipment, and the forwarding of the multicast video data is realized. By the method, when the data stream of the IPTV service is required to be transmitted, the multicast video data can be forwarded to the terminal equipment through the operator server, the plurality of edge routers corresponding to the operator server and the core router corresponding to the metropolitan area network, so that the problem that the IPTV service is blocked because the backbone network of the operator cannot send unicast traffic to the metropolitan area network and the terminal equipment cannot receive multicast traffic from the metropolitan area network when the two trunk circuits between the backbone network of the operator and the metropolitan area network are completely disconnected is solved. And the conversion between multicast traffic and unicast traffic and multicast traffic is not needed to be carried out by bypassing the backbone network of an operator through the multicast traffic, thereby improving the data stream transmission efficiency of IPTV service and reducing the network time delay.

Drawings

Fig. 1 is a schematic diagram of an IPTV multicast traffic model according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a data transmission system according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of another data transmission system according to an embodiment of the present application;

fig. 4 is a schematic flow chart of a data transmission method according to an embodiment of the present application;

fig. 5 is a schematic flow chart of a data transmission method according to an embodiment of the present application;

fig. 6 is a schematic flow chart III of a data transmission method according to an embodiment of the present application;

fig. 7 is a schematic flow chart of a data transmission method according to an embodiment of the present application;

fig. 8 is a flowchart fifth of a data transmission method according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of an operator server according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a metropolitan area network according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

In the description of the present application, "/" means "or" unless otherwise indicated, for example, a/B may mean a or B. "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. Further, "at least one", "a plurality" means two or more. The terms "first," "second," and the like do not limit the number and order of execution, and the terms "first," "second," and the like do not necessarily differ.

The operator backbone network in the current IPTV multicast service does not allow the forwarding of the multicast traffic, so that the IPTV multicast service propagates the multicast traffic by adopting a multicast relay mode, namely, a central server of an operator receives the multicast traffic from a media company, converts the received multicast traffic into unicast traffic, then sends the unicast traffic to the operator backbone network through an operator core server, and the operator backbone network forwards the received unicast traffic to metropolitan area networks of a plurality of areas, so that each regional metropolitan area network converts the unicast traffic into the multicast traffic again through a media resource function (media resource function, MRF) multicast server and forwards the multicast traffic to the regional metropolitan area network again, and the regional metropolitan area network pushes the multicast traffic to terminal equipment.

In the multicast relay mode of the IPTV multicast service, if two transmission links between a regional metropolitan area network and an operator backbone network are completely broken, the operator backbone network will not be able to send unicast traffic to the regional metropolitan area network, and all terminal devices in the regional metropolitan area network will not be able to receive multicast traffic from the regional metropolitan area network, so that the IPTV multicast service in the region will be blocked comprehensively, seriously affecting the IPTV multicast service in the regional metropolitan area network, and further causing the public praise of the operator to be damaged. In addition, in the above manner, the multicast traffic needs to bypass the operator core server and the operator backbone network, and the conversion between the multicast traffic, the unicast traffic and the multicast traffic needs to be performed between the central server of the operator and the metropolitan area network, which may generate network delay, so that the efficiency in implementing the data traffic transmission of the IPTV multicast service is low. Meanwhile, in the method, MRF multicast servers are required to be additionally deployed in each area, so that the IPTV networking capacity expansion cost is increased.

Illustratively, the IPTV platform employs a two-level architecture, including a plurality of central servers, a plurality of mutual nodes, and a plurality of edge nodes (corresponding to different geographic areas). As shown in fig. 1, a media company sends a multicast traffic to a central server of an operator, the central server of the operator receives the multicast traffic, converts the multicast traffic into a unicast traffic and sends the unicast traffic to an operator core server, the operator core server forwards the received unicast traffic to a metropolitan area network (a plurality of metropolitan area networks are respectively located in different areas and correspond to different cities) through an operator backbone network, the metropolitan area network reconverts the unicast traffic into the multicast traffic through an MRF multicast server in a local area, the MRF multicast server in the local area reconverts the multicast traffic to the metropolitan area network, and the metropolitan area network pushes the received multicast traffic to a terminal device.

The embodiment of the application provides a data transmission method, when a data stream of IPTV service is required to be transmitted, an operator server can acquire multicast video data to be transmitted based on BIERv6 protocol, and based on MSDP and PIM, the multicast video data is forwarded to a core router which corresponds to a metropolitan area network and does not support BIERv6 protocol through an edge router which corresponds to the operator server and supports BIERv6 protocol, so that the metropolitan area network forwards the multicast video data to terminal equipment, and forwarding of the multicast video data is realized. By the method, when the data stream of the IPTV service is required to be transmitted, the multicast video data can be forwarded to the terminal equipment through the operator server, the plurality of edge routers corresponding to the operator server and the core router corresponding to the metropolitan area network, so that the problem that the IPTV service is blocked because the backbone network of the operator cannot send unicast traffic to the metropolitan area network and the terminal equipment cannot receive multicast traffic from the metropolitan area network when the two trunk circuits between the backbone network of the operator and the metropolitan area network are completely disconnected is solved. And the conversion between multicast traffic and unicast traffic and multicast traffic is not needed to be carried out by bypassing the backbone network of an operator through the multicast traffic, thereby improving the data stream transmission efficiency of IPTV service and reducing the network time delay.

The data transmission method provided by the embodiment of the application can be applied to a data transmission system. Fig. 2 shows a schematic diagram of the structure of the data transmission system. As shown in fig. 2, the data transmission system 20 includes: a media company server 21, an operator server 22, a metropolitan area network 23, and a terminal device 24. The operator server 22 includes a plurality of root node routers 221 and a plurality of edge routers 222, which may constitute a plurality of sets of leaf node routers; the metropolitan area network 23 includes a core router 231 and a broadband remote access server (broadband remote access server, BRAS) 232; the terminal equipment 24 includes a Switch (SW), an optical line terminal (optical line terminal, OLT), and a Set Top Box (STB). Metropolitan area network 23 is an autonomous system (autonomous system, AS).

The media company 21 is configured to send the multicast video data to the operator server 22, where the operator server 22 and the metropolitan area network 23 are respectively configured to forward the multicast video data from the media company 21, and the terminal device 24 is configured to receive the multicast video data forwarded from the metropolitan area network 23, so as to send the multicast video data from the media company 21 to the terminal device 24.

As shown in fig. 3, another data transmission system configuration diagram is shown. The carrier server 22 includes a carrier IPTV multicast server 31 and a carrier cloud backbone network 32, the carrier cloud backbone network 32 including a plurality of root node routers 221 and a plurality of edge routers 222. The operator's cloud backbone 32 is an AS. The operator IPTV multicast server 31 is configured to send multicast video data to the cloud backbone network 32 of the operator, so as to send the multicast video data from the operator IPTV multicast server 31 to the cloud backbone network 32 of the operator.

A data transmission method provided in the embodiments of the present application is described below with reference to the accompanying drawings. As shown in fig. 4, the data transmission method provided in the embodiment of the present application is applied to an operator server, where the operator server corresponds to a plurality of edge routers, and the method includes S201-S202:

s201, obtaining multicast video data based on the bit index explicit copy BIERv6 protocol of the internet protocol 6 th edition package.

It will be appreciated that the operator server obtains multicast video data from the media company based on the internet protocol version 6 encapsulated bit index explicit replication (bit index explicit replication IPv6 encapsulation, BIERv 6) protocol.

It should be noted that, the media company is a mechanism for providing multicast video data, and the media company needs to forward the multicast video data to a terminal device corresponding to a user through an operator server, so that the user can view content corresponding to the multicast video data through the terminal device.

Alternatively, the operator server may be an IPTV multicast server, and may correspond to a plurality of edge routers (PEs), and the edge routers are routers supporting BIERv 6.

It should be noted that, the plurality of edge routers corresponding to the operator server are edge routers in the cloud backbone network corresponding to the operator server, the cloud backbone network is an AS, and the AS refers to a group of networks using a unified internal routing protocol.

The BIERv6 protocol is a novel multicast scheme, and the BIERv6 packages a set of destination nodes of a multicast message in a Bit String (Bit String) manner to send the message, so that a network intermediate node does not need to establish a multicast distribution tree and save a stream state for each multicast stream, and only needs to complete copying and forwarding according to the Bit String of the message header. BIERv6 combines BIER with Native IPv6 message forwarding, does not need to explicitly establish a multicast tree, does not need to maintain each multicast stream state in an intermediate node, can be seamlessly integrated into a SRv network, and simplifies protocol complexity.

S202, based on a multicast source discovery protocol MSDP and a protocol independent multicast PIM, the multicast video data is forwarded to a core router through an edge router.

The edge router is a router supporting the BIERv6 protocol, the core router is a router not supporting the BIERv6 protocol, and the core router is a router corresponding to the metropolitan area network. In the operator network, the network is layered into an access layer, a convergence layer, and a Core Router (CR) is located in the core layer.

It will be appreciated that the operator server forwards multicast video data from the carrier to the corresponding core router of the metropolitan area network via the edge router based on multicast source discovery protocol (multicast source discovery protocol, MSDP) and protocol independent multicast (protocol independent multicast, PIM).

Correspondingly, the core router corresponding to the metropolitan area network receives the multicast video data forwarded by the edge router corresponding to the operator server.

It should be noted that MSDP is an inter-domain multicast solution developed based on a plurality of multicast domain interconnections; PIM includes PIM-SM, PIM-DM, protocol independent multicast needs to construct a control plane multicast tree, the multicast tree is utilized to process network plane logic into tree shape, so as to realize point-to-multipoint data forwarding, loop avoidance, etc. of multicast forwarding, the intermediate node of the multicast routing protocol taking the construction of the distribution tree as the core needs to maintain the state of complex multicast forwarding information.

The embodiment of the application provides a data transmission method, when a data stream of IPTV service is required to be transmitted, an operator server can acquire multicast video data to be transmitted based on BIERv6 protocol, and based on MSDP and PIM, the multicast video data is forwarded to a core router which corresponds to a metropolitan area network and does not support BIERv6 protocol through an edge router which corresponds to the operator server and supports BIERv6 protocol, so that the metropolitan area network forwards the multicast video data to terminal equipment, and forwarding of the multicast video data is realized. By the method, when the data stream of the IPTV service is required to be transmitted, the multicast video data can be forwarded to the terminal equipment through the operator server, the plurality of edge routers corresponding to the operator server and the core router corresponding to the metropolitan area network, so that the problem that the IPTV service is blocked because the backbone network of the operator cannot send unicast traffic to the metropolitan area network and the terminal equipment cannot receive multicast traffic from the metropolitan area network when the two trunk circuits between the backbone network of the operator and the metropolitan area network are completely disconnected is solved. And the conversion between multicast traffic and unicast traffic and multicast traffic is not needed to be carried out by bypassing the backbone network of an operator through the multicast traffic, thereby improving the data stream transmission efficiency of IPTV service and reducing the network time delay.

In one design, a plurality of edge routers form a plurality of sets of leaf node routers, each set of leaf node routers in the plurality of sets of leaf node routers corresponding to a different metropolitan area network. As shown in fig. 5, in the data transmission method provided in the embodiment of the present application, the method in step 202 specifically includes S301:

s301, forwarding multicast video data to a core router corresponding to any metropolitan area network through a group of leaf node routers corresponding to any metropolitan area network based on MSDP and PIM.

In one example, for any metropolitan area network, a set of leaf node routers corresponding to any metropolitan area network in the operator server may forward multicast video data from the media company to core routers corresponding to any metropolitan area network based on MSDP and PIM.

Alternatively, the plurality of root node routers corresponding to the operator server may be biplane BIERv6 root nodes, and the plurality of root node routers corresponding to the operator server are specifically root node routers in a cloud backbone network corresponding to the operator server, where internal gateway protocols (interior gateway protocol, IGP) (intermediate system-to-intermediate system routing protocol (intermediate system to intermediate system routing protocol, IS-IS)) and border gateway protocols (border gateway protocol, BGP) are required to be turned on.

Alternatively, the multiple groups of leaf node routers formed by the multiple edge routers may be ground city biplane routers (i.e. ground city biplane PE devices), and the multicast message is forwarded between the root node router (i.e. BIERv6 root node device) and the edge router (i.e. PE devices) through BIERv 6.

It will be appreciated that the plurality of root node routers, the plurality of edge routers, and the plurality of edge routers may be a plurality of root node routers, a plurality of edge routers, and a plurality of edge routers, respectively, in fig. 2.

In the embodiment of the application, the operator server can acquire the multicast video data from the media company based on the BIERv6 protocol, and forward the multicast video data from the media company to the core router corresponding to the metropolitan area network based on the MSDP and PIM. In this way, the multicast video data can directly reach the metropolitan area network through the operator server, and traffic conversion and detouring are not needed in the middle. Therefore, IPTV multicast service protection is realized, multicast network time delay is reduced, and communication efficiency of multicast data transmission is improved.

In one design, the operator server also corresponds to a plurality of root node routers, the root node routers are routers supporting the BIERv6 protocol, and data corresponding to the plurality of root node routers are mutually backed up; as shown in fig. 6, in the data transmission method provided in the embodiment of the present application, before the method in step 202, S401 is specifically further included:

S401, forwarding the multicast video data to a plurality of groups of leaf node routers corresponding to different metropolitan area networks through any node router based on BIERv6 protocol.

It can be appreciated that the operator server forwards the received multicast video data to the corresponding groups of leaf node routers of different metropolitan area networks via the corresponding root node router based on BIERv6 protocol. Correspondingly, the multiple groups of leaf node routers corresponding to different metropolitan area networks receive multicast video data forwarded by the operator server through the root node router.

That is, the multicast video data can be forwarded to a plurality of metropolitan area networks through the root node router and a plurality of groups of leaf node routers corresponding to different metropolitan area networks, so that the multicast video data can be forwarded to users corresponding to the metropolitan area networks.

It will be appreciated that the root node router corresponding to the operator server may obtain multicast video data from the media company based on the BIERv6 protocol, and forward the multicast video data from the media company to the edge router (i.e., leaf node router) corresponding to the operator server.

Another data transmission method provided in the embodiments of the present application is described below with reference to the accompanying drawings. As shown in fig. 7, the data transmission method provided in the embodiment of the present application is applied to a metropolitan area network, where the metropolitan area network includes a core router and a broadband remote access server BRAS, and the method includes S501-S502:

S501, multicast video data forwarded by an operator server through an edge router is received through a core router based on MSDP and PIM.

The edge router is a router supporting the BIERv6 protocol, the core router is a router not supporting the BIERv6 protocol, and the core router is a router corresponding to the metropolitan area network.

In one example, a core router in a metropolitan area network may receive multicast video data forwarded through an edge router from an operator server based on MSDP and PIM.

It should be noted that, the metropolitan area network may be the metropolitan area network 23 in fig. 2, the core router may be the core router 231 corresponding to the metropolitan area network 23 in fig. 2, and the edge router may be the edge router 222 corresponding to the operator server 22 in fig. 2. The broadband remote access server (broadband remote access server, BRAS) may be BRAS 232 in the metropolitan area network 23 in fig. 2, which may be an AS. The BRAS is a novel access gateway for broadband network application, is positioned at a convergence layer of a backbone network, and can finish the data access of an IP network with user bandwidth.

Alternatively, the edge router and the core router need to start a static routing protocol, and static routing is a routing manner, and routing entries (routing entries) are manually configured, rather than dynamically determined. Unlike dynamic routing, static routing is fixed and does not change even if the network conditions have changed or are reconfigured. In general, static routing is the addition of a routing table item by a network administrator.

S502, based on an Internet group management protocol IGMP, the multicast video data is forwarded to the terminal equipment through the BRAS.

Optionally, the metropolitan area network forwards the multicast video data forwarded by the operator server through the core router to the terminal device through the BRAS based on internet group management protocol (internet group management protocol, IGMP). Correspondingly, the terminal equipment receives the multicast video data forwarded by the BRAS.

Optionally, the metropolitan area network needs to forward the multicast video data to the two-layer network device through the BRAS based on IGMP, and then forward the multicast video data to the terminal device through the two-layer network device, and the two-layer network device needs to turn on IGMP.

Optionally, the two-layer network device includes a Switch (SW), an optical line terminal (optical line terminal, OLT), and the like, and the OLT is a terminal device for connecting to the optical fiber trunk.

Alternatively, the terminal device may be: a digital video conversion Box (STB), a Television (TV), a mobile phone, and the like. The terminal device may be the terminal device 24 in fig. 2.

In one example, a BRAS in a metropolitan area network may forward multicast video data forwarded through a core router to a terminal device based on IGMP, and a BRAS downstream interface and the terminal device need to turn on IGMP.

In one design, as shown in fig. 8, in the data transmission method provided in the embodiment of the present application, before the method in step 502, S601 is specifically further included:

s601, based on PIM, forwarding the multicast video data forwarded by the operator server through the core router to the BRAS through the core router.

Accordingly, the BRAS receives multicast video data forwarded from the core router, and the core router and BRAS need to turn on IGP (IS-IS).

In the embodiment of the present application, the core router in the metropolitan area network may receive the multicast video data forwarded by the edge router from the operator server based on the MSDP and the PIM, the core router in the metropolitan area network may forward the multicast video data from the edge router to the BRAS in the metropolitan area network via the PIM, and the BRAS in the metropolitan area network may forward the multicast video data forwarded by the core router to the terminal device based on the IGMP. Thus, the multicast video data can be forwarded to the terminal equipment through the metropolitan area network without additional newly-built equipment. Therefore, the IPTV networking capacity expansion cost is reduced.

In one implementation, when a media company needs to send multicast video data to a user, the media company first needs to send the multicast video data to an operator server, and a corresponding IPTV multicast server in the operator server receives the multicast video data from the media company. The IPTV multicast server in the operator server forwards the multicast video data to the cloud backbone network of the operator corresponding to the operator server based on the BIERv6 protocol. The root node router corresponding to the cloud backbone network of the operator receives the multicast video data, the root node corresponding to the cloud backbone network of the operator forwards the multicast video data to the edge router corresponding to the cloud backbone network of the operator based on the BIERv6 protocol, and the edge router corresponding to the cloud backbone network of the operator forwards the multicast video data to the metropolitan area network based on the MSDP and PIM. The core router corresponding to the metropolitan area network receives the multicast video data, and forwards the multicast video data to the BRAS in the metropolitan area network based on PIM, and the BRAS in the metropolitan area network forwards the multicast video data to the two-layer network device based on IGMP. The two-layer network device forwards the multicast video data to the terminal device based on IGMP, so that a user can view the content corresponding to the multicast video data through the terminal device.

The embodiment of the application provides a data transmission method, when two trunk transmission links are completely disconnected, a multicast service flow path is switched to a media company-operator server (cloud backbone network) -metropolitan area network-terminal equipment, IPTV service protection is realized, the operator server directly transmits multicast video data corresponding to the media company to the terminal equipment of a user, the flow does not need to bypass the backbone network, the multicast video data does not need to be converted between multicast flow, unicast flow and multicast flow, and the time delay of the multicast network is reduced. Meanwhile, an MRF multicast server is not required to be additionally deployed, and the existing cloud backbone network is multiplexed, so that additional new equipment is not required, and the IPTV networking capacity expansion cost is greatly reduced. The multicast message is forwarded by adopting a new multicast forwarding technology BIERv6, and the multicast message forwarding is realized by adopting a new and old multicast technology in combination with the BIERv6 supporting condition of equipment in the network, so that the backbone network is avoided being bypassed, and the network time delay is reduced.

The foregoing description of the solution provided in the embodiments of the present application has been mainly presented in terms of a method. To achieve the above functions, it includes corresponding hardware structures and/or software modules that perform the respective functions. Those of skill in the art will readily appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The embodiment of the application may divide functional modules according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated modules may be implemented in hardware or in software functional modules. Optionally, the division of the modules in the embodiments of the present application is schematic, which is merely a logic function division, and other division manners may be actually implemented.

Fig. 9 is a schematic structural diagram of an operator server according to an embodiment of the present application. As shown in fig. 9, an operator server 40 is used to improve the data stream transmission efficiency of the IPTV service, reduce the network delay, and for example, is used to perform a data transmission method shown in fig. 4. The carrier server 40 includes: an acquisition unit 401 and a forwarding unit 402.

An obtaining unit 401, configured to obtain multicast video data by explicitly copying BIERv6 protocol based on the bit index encapsulated in the 6 th edition of internet protocol;

the forwarding unit 402 is configured to forward, based on the multicast source discovery protocol MSDP and the protocol independent multicast PIM, the multicast video data to the core router through the edge router, where the edge router is a router supporting the BIERv6 protocol, the core router is a router not supporting the BIERv6 protocol, and the core router is a router corresponding to the metropolitan area network.

In one possible implementation, the plurality of edge routers form a plurality of sets of leaf node routers, each set of leaf node routers in the plurality of sets of leaf node routers corresponding to a different metropolitan area network; and the forwarding unit 402 is configured to forward, for any metropolitan area network, the multicast video data to a core router corresponding to any metropolitan area network through a group of leaf node routers corresponding to any metropolitan area network based on MSDP and PIM.

In one possible implementation manner, the operator server further corresponds to a plurality of root node routers, the root node routers are routers supporting the BIERv6 protocol, and data corresponding to the plurality of root node routers are backed up mutually; and the forwarding unit 402 is configured to forward the multicast video data to multiple groups of leaf node routers corresponding to different metropolitan area networks through any one node router based on the BIERv6 protocol.

Fig. 10 is a schematic structural diagram of a metropolitan area network according to an embodiment of the present application. As shown in fig. 10, a metropolitan area network 50 is used to improve the data stream transmission efficiency of IPTV service and reduce network delay, for example, to implement a data transmission method shown in fig. 7. The metropolitan area network 50 includes: a receiving unit 501 and a forwarding unit 502.

A receiving unit 501, configured to receive, based on MSDP and PIM, multicast video data forwarded by an operator server through an edge router, where the edge router is a router supporting BIERv6 protocol, the core router is a router not supporting BIERv6 protocol, and the core router is a router corresponding to a metropolitan area network;

a forwarding unit 502, configured to forward the multicast video data to the terminal device through the BRAS based on the internet group management protocol IGMP.

In one possible implementation, the forwarding unit 502 is configured to forward the multicast video data to the BRAS through the core router based on PIM.

In the case of implementing the functions of the integrated modules in the form of hardware, another possible structural schematic diagram of the electronic device involved in the foregoing embodiment is provided in the embodiments of the present application. As shown in fig. 11, an electronic device 60 is configured to improve the data stream transmission efficiency of an IPTV service and reduce network delay, for example, to perform a data transmission method shown in fig. 4 or fig. 7. The electronic device 60 comprises a processor 601, a memory 602 and a bus 603. The processor 601 and the memory 602 may be connected by a bus 603.

The processor 601 is a control center of the communication device, and may be one processor or a collective term of a plurality of processing elements. For example, the processor 601 may be a general-purpose central processing unit (central processing unit, CPU), or may be another general-purpose processor. Wherein the general purpose processor may be a microprocessor or any conventional processor or the like.

As one example, processor 601 may include one or more CPUs, such as CPU 0 and CPU 1 shown in fig. 11.

The memory 602 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (random access memory, RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), magnetic disk storage or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.

As a possible implementation, the memory 602 may exist separately from the processor 601, and the memory 602 may be connected to the processor 601 through the bus 603 for storing instructions or program codes. The processor 601, when calling and executing instructions or program code stored in the memory 602, is capable of implementing a data transmission method provided in the embodiments of the present application.

In another possible implementation, the memory 602 may also be integrated with the processor 601.

Bus 603 may be an industry standard architecture (industry standard architecture, ISA) bus, a peripheral component interconnect (peripheral component interconnect, PCI) bus, or an extended industry standard architecture (extended industry standard architecture, EISA) bus, among others. The bus may be classified as an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 11, but not only one bus or one type of bus.

It should be noted that the structure shown in fig. 11 does not constitute a limitation of the electronic device 60. The electronic device 60 may include more or fewer components than shown in fig. 11, or may combine certain components or a different arrangement of components.

As an example, in connection with fig. 9, the acquisition unit 401 and the forwarding unit 402 in the electronic device realize the same functions as those of the processor 601 in fig. 11.

As an example, in connection with fig. 10, the functions implemented by the receiving unit 501 and the forwarding unit 502 in the electronic device are the same as those of the processor 601 in fig. 11.

Optionally, as shown in fig. 11, the electronic device 60 provided in the embodiment of the present application may further include a communication interface 604.

Communication interface 604 for connecting with other devices via a communication network. The communication network may be an ethernet, a radio access network, a wireless local area network (wireless local area networks, WLAN), etc. The communication interface 604 may include a receiving unit for receiving data and a transmitting unit for transmitting data.

In one design, the electronic device provided in the embodiments of the present application may further include a communication interface integrated into the processor.

From the above description of embodiments, it will be apparent to those skilled in the art that the foregoing functional unit divisions are merely illustrative for convenience and brevity of description. In practical applications, the above-mentioned function allocation may be performed by different functional units, i.e. the internal structure of the device is divided into different functional units, as needed, to perform all or part of the functions described above. The specific working processes of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which are not described herein.

The embodiment of the application further provides a computer readable storage medium, in which instructions are stored, and when the computer executes the instructions, the computer executes each step in the method flow shown in the method embodiment.

Embodiments of the present application provide a computer program product comprising instructions which, when run on a computer, cause the computer to perform a data transmission method as in the method embodiments described above.

The computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: electrical connections having one or more wires, portable computer diskette, hard disk. Random access memory (random access memory, RAM), read-only memory (ROM), erasable programmable read-only memory (erasable programmable read only memory, EPROM), registers, hard disk, optical fiber, portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any other form of computer-readable storage medium suitable for use by a person or combination of the foregoing, or as a value in the art.

An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an application specific integrated circuit (application specific integrated circuit, ASIC).

In the context of the present application, a computer-readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.

Since the electronic device, the computer readable storage medium, and the computer program product in the embodiments of the present application may be applied to the above-mentioned method, the technical effects that can be obtained by the electronic device, the computer readable storage medium, and the computer program product may also refer to the above-mentioned method embodiments, and the embodiments of the present application are not repeated herein.

The foregoing is merely a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered in the protection scope of the present application.

Claims (12)

1. A data transmission method, applied to an operator server, the operator server corresponding to a plurality of edge routers, the method comprising:

The BIERv6 protocol is explicitly copied based on the bit index of the internet protocol 6 th edition package to obtain multicast video data;

based on a multicast source discovery protocol MSDP and a protocol independent multicast PIM, forwarding the multicast video data to a core router through an edge router, wherein the edge router is a router supporting a BIERv6 protocol, the core router is a router not supporting the BIERv6 protocol, and the core router is a router corresponding to a metropolitan area network.

2. The method of claim 1, wherein the plurality of edge routers form a plurality of sets of leaf node routers, each set of leaf node routers in the plurality of sets of leaf node routers corresponding to a different metropolitan area network;

the multicast source discovery protocol MSDP and protocol independent multicast PIM based forwarding the multicast video data to a core router through an edge router comprises the following steps:

and forwarding the multicast video data to a core router corresponding to any metropolitan area network through a group of leaf node routers corresponding to the any metropolitan area network based on MSDP and PIM.

3. The method according to claim 2, wherein the operator server further corresponds to a plurality of root node routers, the root node routers being routers supporting BIERv6 protocol, the data corresponding to the plurality of root node routers being backed up with each other;

Before forwarding the multicast video data to the core router through the edge router, the method further comprises:

and forwarding the multicast video data to a plurality of groups of leaf node routers corresponding to different metropolitan area networks through any node router based on BIERv6 protocol.

4. A data transmission method, characterized in that it is applied to a metropolitan area network, the metropolitan area network including a core router and a broadband remote access server BRAS, the method comprising:

based on MSDP and PIM, receiving multicast video data forwarded by an operator server through an edge router by the core router, wherein the edge router is a router supporting BIERv6 protocol, the core router is a router not supporting BIERv6 protocol, and the core router is a router corresponding to a metropolitan area network;

and forwarding the multicast video data to terminal equipment through the BRAS based on an Internet Group Management Protocol (IGMP).

5. The method of claim 4, wherein the method further comprises, prior to forwarding the multicast video data to a terminal device via the BRAS based on internet group management protocol IGMP:

And forwarding the multicast video data to the BRAS through the core router based on PIM.

6. An operator server, wherein the operator server corresponds to a plurality of edge routers, the operator server comprising: an acquisition unit and a forwarding unit;

the obtaining unit is used for explicitly copying the BIERv6 protocol based on the bit index of the 6 th edition package of the internet protocol to obtain multicast video data;

the forwarding unit is configured to forward the multicast video data to a core router through an edge router based on a multicast source discovery protocol MSDP and a protocol independent multicast PIM, where the edge router is a router supporting a BIERv6 protocol, the core router is a router not supporting the BIERv6 protocol, and the core router is a router corresponding to a metropolitan area network.

7. The carrier server of claim 6, wherein the plurality of edge routers form a plurality of sets of leaf node routers, each set of leaf node routers in the plurality of sets of leaf node routers corresponding to a different metropolitan area network;

the forwarding unit is configured to forward, for any metropolitan area network, the multicast video data to a core router corresponding to the any metropolitan area network through a group of leaf node routers corresponding to the any metropolitan area network based on MSDP and PIM.

8. The carrier server of claim 7, wherein the carrier server further corresponds to a plurality of root node routers, the root node routers being routers supporting BIERv6 protocol, the data corresponding to the plurality of root node routers being backed up with each other;

the forwarding unit is configured to forward, based on the BIERv6 protocol, the multicast video data to multiple groups of leaf node routers corresponding to different metropolitan area networks through any one node router.

9. A metropolitan area network comprising a core router and a broadband remote access server BRAS, the metropolitan area network comprising: a receiving unit and a forwarding unit;

the receiving unit is configured to receive, based on MSDP and PIM, multicast video data forwarded by an operator server through an edge router, where the edge router is a router supporting BIERv6 protocol, the core router is a router not supporting BIERv6 protocol, and the core router is a router corresponding to a metropolitan area network;

the forwarding unit is configured to forward the multicast video data to a terminal device through the BRAS based on an internet group management protocol IGMP.

10. The metropolitan area network according to claim 9, wherein said forwarding unit is configured to forward said multicast video data to said BRAS via said core router based on PIM.

11. An electronic device, comprising: a processor and a memory; wherein the memory is configured to store one or more programs, the one or more programs comprising computer-executable instructions that, when executed by the electronic device, cause the electronic device to perform a data transmission method as claimed in any of claims 1-3 or 4-5.

12. A computer readable storage medium storing one or more programs, wherein the one or more programs comprise instructions, which when executed by a computer, cause the computer to perform a data transmission method as claimed in any of claims 1-3 or 4-5.