CN114944861A - Multicast baseband configuration system and method - Google Patents
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Abstract
The invention discloses a multicast baseband configuration system and a method, relating to the technical field of satellite networks; the system comprises an information source machine room and a first ground station; the information source machine room is internally provided with a first server, the first ground station comprises a platform access unit, a core network and a multicast small station terminal, the platform access unit is internally provided with a multicast information source server, the platform access unit is connected with the core network, and the core network is connected with the first server and used for realizing mutual data transmission with the first server; the core network is provided with a baseband protocol processor PP which is used for receiving multicast streams and forwarding the multicast streams to a multicast small station terminal through a satellite, and a satellite MODEM MODEM is arranged in the multicast small station terminal; the beneficial effects of the invention are: the problem of high time delay of an individual user in the satellite network when the video is played can be solved, and the time delay of the user when the video is opened in the satellite network is reduced to the same level as that of the terrestrial internet.
Description
Technical Field
The present invention relates to the field of satellite network technologies, and in particular, to a multicast baseband configuration system and method.
Background
As a communication mode parallel to unicast and broadcast, Multicast (Multicast) effectively achieves the technical purpose of 'single-point transmission and multipoint reception', is beneficial to saving network bandwidth so as to reduce network burden, and in addition, by utilizing the Multicast characteristic of the network, a service provider can conveniently provide some new value-added services for users, such as online live broadcast, network television, remote education, remote medical treatment, network radio, real-time video conference and the like.
Taking the currently widely applied multicast service such as IPTV service as an example, the multicast source (the device that originally sends out multicast data) is generally located on the network side (e.g., content delivery network CDN), and there are multicast service management, multicast right management of the user, and multicast charging management schemes corresponding to the multicast source.
With the further increase of network bandwidth, the terminal users no longer satisfy the role of merely serving as service receivers, and thus, the requirement that the multicast source device is located at the user terminal side occurs in the network. Hereinafter, unless otherwise specified, the multicast source of which the multicast source is located at the user terminal side is referred to as an upstream multicast source, and the multicast source of the upstream multicast is referred to as an upstream multicast source; accordingly, the multicast in which the conventional multicast source device is located on the network side is referred to as a downstream multicast.
In the technical field of satellite networks, currently, ASR has successfully enabled a multicast protocol function of a relevant interface and vlan in network deployment, and at present, a baseband protocol processor PP and a satellite MODEM can theoretically support multicasting igmpv3snooping and igmpv3static protocols, but through testing, the problem that igmpv3snooping cannot be realized is not solved yet.
Disclosure of Invention
In order to overcome the deficiencies of the prior art, the invention provides a multicast baseband configuration system and a multicast baseband configuration method.
The technical scheme adopted by the invention for solving the technical problems is as follows: the improvement of a multicast baseband configuration system is that the system comprises an information source machine room and a first ground station;
the information source machine room is internally provided with a first server, the first ground station comprises a platform access unit, a core network and a multicast small station terminal, the platform access unit is internally provided with a multicast information source server, the platform access unit is connected with the core network, and the core network is connected with the first server and used for realizing mutual data transmission with the first server;
the core network is provided with a baseband protocol processor PP which is used for receiving the multicast stream and transmitting the multicast stream to the multicast small station terminal through a satellite, and the multicast small station terminal is internally provided with a satellite MODEM MODEM which is used for receiving the multicast stream.
Further, the multicast information source server comprises an on-demand server, a monitoring server, a live broadcast server and a multicast information source access switch, and the on-demand server, the monitoring server and the live broadcast server are all connected to the multicast information source access switch.
Further, the platform access unit further comprises a Platform Firewall (PFW) and a Platform Switch (PSW) which are connected, the platform switch PSW is connected with the multicast information source access switch, and the Platform Firewall (PFW) is accessed to the core network.
Further, the core network further comprises a core router CR, a broadband access server BRAS, a baseband side router ASR and a convergence switch N3K, which are connected in sequence;
the core router CR is configured to connect to a platform firewall PFW and a first server, where the plurality of baseband protocol processors PP form a baseband server group, and the baseband server group is connected to the aggregation switch N3K.
Furthermore, the multicast small-station terminal further comprises a video gateway box, the video gateway box is connected with the satellite MODEM through a local area network, and the video gateway box is used for controlling video playing.
Further, the multicast baseband configuration system further includes a second ground station, where the second ground station includes a platform access unit, a core network, and a multicast small station terminal, and the core network of the second ground station is connected with the core network of the first ground station.
Further, the present invention provides a multicast baseband part configuration method, and the improvement is that the method is applied to the multicast baseband configuration system, and the method includes the following steps:
s10, pushing video playing contents, wherein the information source machine room pushes the video playing contents to a multicast information source server of a first ground station;
s20, pushing multicast streams, wherein the multicast source server selects an address from pre-distributed multicast group addresses to push the multicast streams to the downstream of a core network, and the multicast streams are forwarded to a protocol processor PP and are forwarded through a satellite and received by a satellite MODEM MODEM of a multicast small-station terminal;
s30, playing the video, wherein the video gateway box of the multicast small station terminal plays the received multicast stream;
and S40, the video program authentication mechanism, the video program authentication and charging function all utilize the video gateway box to return the link to the first ground station through the management channel, and upload the link to the first server of the information source machine room for authentication, authentication and charging, and after the authentication is successful, the link is fed back to the video gateway box to realize the playing of the video program.
Further, in step S10, the video playing content includes live content or on-demand content, and the information source room pushes the video playing content through an http protocol message.
Further, when the video playing content is live content, in step S30, the video gateway box uniformly converts the received multicast udp packet into an http protocol packet and then sends the http protocol packet to the corresponding service terminal;
further, when the video playing content is the on-demand content, in step S30, the video gateway box stores the received on-demand content in the local box hard disk, and according to the requirement of the service terminal mobile phone, the video gateway box pushes the locally on-demand content to the corresponding mobile phone end in a unicast manner.
Further, in step S20, the multicast stream is forwarded to the protocol processor PP through the platform firewall PFW, the core router CR, the broadband access server BRAS, and the baseband side router ASR.
The invention has the beneficial effects that: the method can reduce the problem of high time delay of an individual user in the satellite network when playing the video, and reduce the time delay of the user when opening the video in the satellite network to a level of the terrestrial internet; in addition, the problem that the user quantity for playing videos in the satellite network is in direct proportion to satellite resources consumed by the service can be solved, and the media service under the same beam can use one fixed satellite resource by adopting the method and the system, so that the satellite resource investment cannot be increased along with the increase of the user quantity.
Drawings
Fig. 1 and fig. 2 are schematic structural diagrams of a frame of a multicast baseband configuration system according to the present invention.
Fig. 3 is a flowchart illustrating a multicast baseband configuration method according to the present invention.
Fig. 4 is a multicast traffic topology diagram in the present invention.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention. In addition, all the connection/connection relations referred to in the patent do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection auxiliary components according to specific implementation conditions. All technical characteristics in the invention can be interactively combined on the premise of not conflicting with each other.
Referring to fig. 1 and fig. 2, the present invention discloses a multicast baseband configuration system, which combines fig. 1 and fig. 2 to form an overall architecture drawing of the multicast baseband configuration system. The system comprises an information source machine room and a first ground station, wherein a first server is arranged in the information source machine room, the first ground station comprises a platform access unit, a core network and a multicast small station terminal, a multicast information source server is arranged in the platform access unit, the platform access unit is connected with the core network, and the core network is connected with the first server and used for realizing data mutual transmission with the first server; the core network is provided with a baseband protocol processor PP which is used for receiving the multicast stream and transmitting the multicast stream to the multicast small station terminal through a satellite, and the multicast small station terminal is internally provided with a satellite MODEM MODEM which is used for receiving the multicast stream.
In this embodiment, the multicast information source server includes an on-demand server, a monitoring server, a live broadcast server and a multicast information source access switch, and the on-demand server, the monitoring server and the live broadcast server are all connected to the multicast information source access switch. The platform access unit further comprises a Platform Firewall (PFW) and a Platform Switch (PSW) which are connected, the platform switch PSW is connected with the multicast information source access switch, and the Platform Firewall (PFW) is accessed to the core network. The platform access unit has the functions of baseband management, CMS management and server management.
Further, referring to fig. 1, the core network further includes a core router CR, a broadband access server BRAS, a baseband side router ASR, and a convergence switch N3K, which are connected in sequence; the core router CR is configured to connect to the platform firewall PFW and the first server, and the plurality of baseband protocol processors PP form a baseband server group, and the baseband server group is connected to the aggregation switch N3K. The communication with the ground station antenna is realized through the convergence switch, the ground station antenna is connected to the satellite, and the signal transmission is realized through the satellite and a plurality of multicast small station terminals.
In this embodiment, a specific embodiment is provided for the multicast small-station terminal, where the multicast small-station terminal further includes a video gateway box, the video gateway box is connected to the satellite MODEM through a local area network, and the video gateway box is used to control video playing and implement network link to products such as a computer and a mobile phone through the local area network.
As shown in fig. 1, the multicast baseband configuration system further includes a second ground station, and similarly, the second ground station includes a platform access unit, a core network, and a multicast small station terminal, and the core network of the second ground station is connected to the core network of the first ground station. The structure of the core network and the multicast small station terminal is the same as that of the core network and the multicast small station terminal in the first ground station, and detailed description is omitted in this embodiment. The platform access unit of the same second ground station also comprises a platform firewall PFW and a platform switch PSW. In the embodiment, a media resource management system, a signal source monitoring system, a convergence switch, an HLS coding cluster, a switch and a DRM server cluster are arranged in a signal source machine room, the HLS coding cluster and the DRM server cluster are connected to the switch, and the switch receives a signal source of a first server; the media resource management system, the information source monitoring system and the HLS coding cluster are all connected to the convergence switch and are accessed to the platform access unit of the second ground station after passing through the firewall.
Based on the multicast baseband configuration system, the invention also provides a multicast baseband part configuration method, which is applied to the system; in this embodiment, a specific embodiment is provided based on the live streaming service flow, and the method includes the following steps:
s10, pushing video playing contents, wherein an information source machine room pushes the video playing contents to a multicast information source server of a first ground station;
in this embodiment, the live broadcast content may be first transmitted in a message to a live broadcast server of the first ground station from the information source room via http. In the process, a live broadcast server which pushes live broadcast content from a first server to a first ground station in a public network mode is designed in the early stage, and an intercommunication private line from an information source machine room to a second ground station can be deployed in the later stage.
S20, pushing multicast streams, wherein the multicast source server selects an address from the pre-distributed multicast group addresses to push the multicast streams to the downstream of the core network, and the multicast streams are forwarded to a protocol processor PP and received by a satellite MODEM MODEM of a multicast small station terminal through satellite forwarding;
in this embodiment, a live broadcast server arranged in a platform access unit continuously pushes a multicast stream (different live broadcast channels all need different multicast group addresses) to the downstream of a core network within 7 × 24 hours from a pre-allocated multicast group address pool, the multicast stream is forwarded to a protocol processor PP through a platform firewall PFW, a core router CR, a broadband access server BRAS and a baseband side router ASR, and is stared and received by a satellite MODEM of a multicast small-station terminal;
s30, playing the video, wherein the video gateway box of the multicast small station terminal plays the received multicast stream;
in this embodiment, the multicast small station terminal uniformly converts the received multicast udp packet into an http protocol packet again and sends the http protocol packet to the corresponding service terminal to play the live video.
S40, an authentication mechanism of the video program, authentication and charging functions of the video program all utilize the video gateway box to return a link to the first ground station through the management channel, and upload the link to the first server of the information source machine room for authentication, authentication and charging, and after the authentication is successful, the link feeds back the link to the video gateway box to realize the playing of the video program.
In another embodiment, a specific embodiment is provided for a service flow based on an on-demand stream, and specifically, the method for configuring the multicast baseband part includes the following steps:
s10, pushing video playing contents, wherein the information source machine room pushes the video playing contents to a multicast information source server of a first ground station;
in this embodiment, the video playing content is on-demand content; the information source machine room pushes authorized on-demand content to the monitoring server of the first ground station through http protocol messages, and the content on the monitoring server is led into the on-demand server in a remote mode. In the process, the monitoring server which pushes the requested content stream from the first server to the first ground station in a public network mode is designed in the early stage, and the intercommunication specialty of the second ground station can be deployed in the later stage.
S20, pushing multicast streams, wherein the multicast source server selects an address from pre-distributed multicast group addresses to push the multicast streams to the downstream of a core network, and the multicast streams are forwarded to a protocol processor PP and are forwarded through a satellite and received by a satellite MODEM MODEM of a multicast small-station terminal;
in this embodiment, the on-demand server of the platform access unit selects an address from a pre-allocated multicast group address pool and pushes a multicast stream (the update time can be arbitrarily selected) to the downstream of the core network in a periodic update manner, and the multicast stream is forwarded to the protocol processor PP through the platform firewall PFW, the core router CR, the broadband access server BRAS, and the baseband side router ASR, and is stared and received by the satellite MODEM of the multicast small-station terminal;
s30, playing the video, wherein the video gateway box of the multicast small station terminal plays the received multicast stream;
in this embodiment, the video gateway box of the multicast small-station terminal stores the received on-demand content in the local box hard disk, and then pushes the locally-on-demand content to the corresponding mobile phone terminal in a unicast manner according to the requirement of the service terminal mobile phone.
S40, the video program authentication mechanism, the video program on demand authentication, authentication and charging function all utilize the video gateway box to pass through the management channel to return the link to reach the first ground station, and upload to the first server of the information source computer lab to authenticate, authenticate and charge, after the authentication succeeds, feedback to the video gateway box to realize the video program playing.
In this embodiment, the present scheme provides a new requirement for the multicast SVN, and can configure the multicast-dedicated SVN for any small station. The design can isolate the multicast flow from the service flow of a specific base, thereby realizing the requirement of subsequent flexible charging, such as a multicast flow topological diagram in fig. 4.
Through the content, the problem of high time delay of an individual user in the satellite network when playing the video can be solved, and the time delay of the user when opening the video in the satellite network is reduced to a level with that of a terrestrial internet; in addition, the problem that the user quantity for playing videos in the satellite network is in direct proportion to satellite resources consumed by the service can be solved, and the media service under the same beam can use one fixed satellite resource by adopting the method and the system, so that the satellite resource investment cannot be increased along with the increase of the user quantity.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (11)
1. A multicast baseband configuration system is characterized by comprising an information source machine room and a first ground station;
the information source machine room is internally provided with a first server, the first ground station comprises a platform access unit, a core network and a multicast small station terminal, the platform access unit is internally provided with a multicast information source server, the platform access unit is connected with the core network, and the core network is connected with the first server and used for realizing mutual data transmission with the first server;
the core network is provided with a baseband protocol processor PP which is used for receiving the multicast stream and transmitting the multicast stream to the multicast small station terminal through a satellite, and the multicast small station terminal is internally provided with a satellite MODEM MODEM which is used for receiving the multicast stream.
2. The system of claim 1, wherein the multicast source server comprises an on-demand server, a monitoring server, a live server, and a multicast source access switch, and the on-demand server, the monitoring server, and the live server are all connected to the multicast source access switch.
3. The system of claim 2, wherein the platform access unit further comprises a platform firewall PFW and a platform switch PSW connected to each other, the platform switch PSW is connected to the multicast source access switch, and the platform firewall PFW is connected to the core network.
4. The system of claim 3, wherein the core network further includes a core router CR, a broadband access server BRAS, a baseband side router ASR, and a convergence switch N3K, which are connected in sequence;
the core router CR is configured to connect to a platform firewall PFW and a first server, where the plurality of baseband protocol processors PP form a baseband server group, and the baseband server group is connected to the aggregation switch N3K.
5. The system of claim 1, wherein the multicast base station terminal further comprises a video gateway box, the video gateway box is connected to the satellite MODEM through the local area network, and the video gateway box is configured to control video playing.
6. The system of claim 1, further comprising a second ground station, wherein the second ground station comprises a platform access unit, a core network, and a multicast small station terminal, and the second ground station core network is connected to the core network of the first ground station.
7. A multicast baseband section configuration method, applied to the multicast baseband configuration system according to any one of claims 1 to 6, the method comprising the steps of:
s10, pushing video playing contents, wherein the information source machine room pushes the video playing contents to a multicast information source server of a first ground station;
s20, pushing multicast streams, wherein the multicast source server selects an address from pre-distributed multicast group addresses to push the multicast streams to the downstream of a core network, and the multicast streams are forwarded to a protocol processor PP and are forwarded through a satellite and received by a satellite MODEM MODEM of a multicast small-station terminal;
s30, playing the video, wherein the video gateway box of the multicast small station terminal plays the received multicast stream;
and S40, the video program authentication mechanism, the video program authentication and charging function all utilize the video gateway box to return the link to the first ground station through the management channel, and upload the link to the first server of the information source machine room for authentication, authentication and charging, and after the authentication is successful, the link is fed back to the video gateway box to realize the playing of the video program.
8. The method according to claim 7, wherein in step S10, the video playing content includes live content or on-demand content, and the source room pushes the video playing content through an http protocol packet.
9. The method according to claim 8, wherein when the video playing content is live content, in step S30, the video gateway box uniformly converts the received multicast udp packet into http protocol packet and sends it to the corresponding service terminal.
10. The method as claimed in claim 8, wherein when the video broadcast content is an on-demand content, in step S30, the video gateway box stores the received on-demand content in a local box hard disk, and the video gateway box pushes the locally on-demand content to the corresponding mobile phone end in a unicast manner according to the requirement of the service terminal mobile phone.
11. The method according to claim 7, wherein in step S20, the multicast stream is forwarded to the protocol processor PP through the platform firewall PFW, the core router CR, the broadband access server BRAS, and the baseband side router ASR.
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