CN111163169B - Data forwarding method, device, equipment and medium - Google Patents
Data forwarding method, device, equipment and medium Download PDFInfo
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- CN111163169B CN111163169B CN201911405801.5A CN201911405801A CN111163169B CN 111163169 B CN111163169 B CN 111163169B CN 201911405801 A CN201911405801 A CN 201911405801A CN 111163169 B CN111163169 B CN 111163169B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
- H04L67/141—Setup of application sessions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
- H04L65/611—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for multicast or broadcast
Abstract
The invention provides a data forwarding method, a device, equipment and a medium. The invention is applied to the technical field of communication. The method is applied to the first sub-control equipment and comprises the following steps: receiving a service signaling sent by the first terminal equipment, and forwarding the service signaling to the main control equipment; receiving a first service opening signaling carrying the first terminal equipment video network address and a second service opening signaling carrying the second terminal equipment video network address, which are sent by the main control equipment; forwarding the first service opening signaling to the first terminal equipment, and forwarding the second service opening signaling to the second terminal equipment; and forwarding the service data between the first terminal equipment and the second terminal equipment through the service data transmission channel. According to the invention, the service data can be sent to more terminal devices through the first sub-control device, so that the flow direction of the service data can be mastered more easily, and the flow explosion of the terminal devices can not be caused.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, a device, and a medium for forwarding data.
Background
The video networking is an important milestone for network development, is a real-time network, can realize real-time transmission of high-definition videos, and pushes numerous internet applications to high-definition videos, and the high definition faces.
The prior art realizes the forwarding service through the Hai Si chip, so that the chip cost is high, and the simulation sub-control quantity is limited. If the data is directly forwarded point to point, the network data cannot be mastered, and the data flow of the terminal equipment also can be popped.
Disclosure of Invention
In view of the foregoing, embodiments of the present invention are provided to provide a method, apparatus, device, and medium for data forwarding that overcomes or at least partially solves the foregoing problems.
In order to solve the above problems, in a first aspect, in order to solve the above problems, an embodiment of the present invention discloses a data forwarding method, which is applied to a first sub-control device in an internet of view data processing system, where the first sub-control device is connected to a main control device, a first terminal device, and a plurality of terminal devices of a second terminal device, respectively; the method comprises the following steps:
receiving a service signaling sent by the first terminal equipment, and forwarding the service signaling to the main control equipment; the service signaling is used for requesting to establish a service data transmission channel between the first terminal equipment and the second terminal equipment;
Receiving a first service opening signaling carrying the first terminal equipment video network address and a second service opening signaling carrying the second terminal equipment video network address, which are sent by the main control equipment;
forwarding the first service opening signaling to the first terminal equipment, and forwarding the second service opening signaling to the second terminal equipment so as to establish a service data transmission channel between the first terminal equipment and the second terminal equipment;
and forwarding the service data between the first terminal equipment and the second terminal equipment through the service data transmission channel.
Preferably, the forwarding, through the service data transmission channel, service data between the first terminal device and the second terminal device includes:
receiving multicast link control information and a data source opening signaling sent by the main control equipment, wherein the link multicast link control information comprises a multicast address;
forwarding the multicast address and the data source opening signaling to the first terminal device;
receiving service data sent by the first terminal equipment, and searching a multicast information table according to the multicast address;
and forwarding the service data to the second terminal equipment according to the multicast information table.
Preferably, the multicast link control information further includes a replacement multicast address; before the step of forwarding the multicast address and the data source opening signaling to the first terminal device, the method further includes:
judging whether the multicast address and the alternative multicast address are the same;
if the multicast addresses are different, replacing the multicast addresses with the replacement multicast addresses.
Preferably, before the step of receiving the service signaling sent by the first terminal device and forwarding the service signaling to the master control device, the method further includes:
establishing communication connection with the main control equipment, the first terminal equipment and the second terminal equipment;
and maintaining the active states of the master control equipment, the first terminal equipment and the second terminal equipment by using heartbeats.
Preferably, the main control device is connected with a second sub control device, and the second sub control device is connected with a plurality of terminal devices; the method further comprises the steps of:
determining whether the service data needs to be forwarded to a plurality of terminal devices connected with the second control device according to the multicast information table;
when determining that the service data needs to be forwarded to a plurality of terminal devices connected with the second branch control device, copying the service data for a plurality of copies;
And forwarding the copied multiple service data to multiple terminal devices connected with the second control device.
In order to solve the problems, an embodiment of the present invention discloses a data forwarding apparatus, which is applied to a first sub-control device in a data processing system of an internet of view, where the first sub-control device is connected to a main control device, a first terminal device, and a plurality of terminal devices of a second terminal device, respectively; the device comprises:
the first receiving module is used for receiving the service signaling sent by the first terminal equipment and forwarding the service signaling to the main control equipment; the service signaling is used for requesting to establish a service data transmission channel between the first terminal equipment and the second terminal equipment;
the second receiving module is used for receiving a first service opening signaling carrying the first terminal equipment video network address and a second service opening signaling carrying the second terminal equipment video network address, which are sent by the main control equipment;
the starting service signaling forwarding module is used for forwarding the first service starting signaling to the first terminal equipment and forwarding the second service starting signaling to the second terminal equipment so as to establish a service data transmission channel between the first terminal equipment and the second terminal equipment;
And the first service data forwarding module is used for forwarding the service data between the first terminal equipment and the second terminal equipment through the service data transmission channel.
Preferably, the first service data forwarding module includes:
the information receiving sub-module is used for receiving multicast link control information and a data source opening signaling sent by the main control equipment, wherein the link multicast link control information comprises a multicast address;
a data forwarding sub-module, configured to forward the multicast address and the data source opening signaling to the first terminal device;
the data searching sub-module is used for receiving the service data sent by the first terminal equipment and searching a multicast information table according to the multicast address;
and the service data forwarding sub-module is used for forwarding the service data to the second terminal equipment according to the multicast information table.
Preferably, the multicast link control information further includes a replacement multicast address; the device further comprises:
an address judging sub-module, configured to judge whether the multicast address and the alternative multicast address are the same;
and the address replacement sub-module is used for replacing the multicast address with the replacement multicast address if the multicast address is different.
Preferably, the device further comprises:
the communication establishing module is used for establishing communication connection with the main control equipment, the first terminal equipment and the second terminal equipment;
and the state maintaining module is used for maintaining the active states of the master control equipment, the first terminal equipment and the second terminal equipment by using heartbeats.
Preferably, the main control device is connected with a second sub control device, and the second sub control device is connected with a plurality of terminal devices; the device further comprises:
a terminal equipment determining module, configured to determine whether the service data needs to be forwarded to a plurality of terminal equipments connected to the second control device according to the multicast information table;
the business data copying module is used for copying the business data for a plurality of copies when determining that the business data needs to be forwarded to a plurality of terminal devices connected with the second branch control device;
and the second service data forwarding module is used for forwarding the copied multiple service data to multiple terminal devices connected with the second control division device.
In a third aspect, in order to solve the above-mentioned problems, an embodiment of the present invention discloses a computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, implements the steps of the method according to any of the first aspects.
In a fourth aspect, in order to solve the above-mentioned problems, an embodiment of the present invention discloses an electronic device, including a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the method according to any one of the first aspects when executed.
The embodiment of the invention has the following advantages:
the invention sends the service signaling to the first sub-control equipment through the first terminal, initiates the service request, causes the first sub-control equipment to forward the service signaling to the main control equipment, generates the service starting signaling, and respectively sends the service starting signaling to the first terminal equipment and the second terminal equipment through the first sub-control equipment, thereby establishing a service data transmission channel between the first terminal equipment and the second terminal equipment, and enabling the first terminal equipment and the second terminal equipment to mutually carry out service data interaction; the first sub-control equipment is used for copying and forwarding the service data, so that the communication of each terminal equipment is orderly controlled, compared with the prior art that the data of the terminal equipment are forwarded by a chip, the cost is saved, the service data can be sent to more terminal equipment according to the first sub-control equipment, the flow direction of the service data is mastered more easily, and the flow explosion of the terminal equipment is avoided.
Drawings
FIG. 1 is a block diagram of a data forwarding scheme of the present invention;
FIG. 2 is a flow chart of the steps of a method of data forwarding of the present invention;
FIG. 3 is a flow chart of the steps of a data forwarding method of the present invention;
FIG. 4 is a flow chart of the steps of a data forwarding method of the present invention;
FIG. 5 is a functional block diagram of a data forwarding system of the present invention;
fig. 6 is a block diagram of a data forwarding apparatus according to the present invention;
FIG. 7 is a networking schematic of the present invention for a video networking;
FIG. 8 is a schematic diagram of the hardware architecture of a node server according to the present invention;
fig. 9 is a schematic diagram of a hardware architecture of an access switch according to the present invention;
fig. 10 is a schematic hardware structure of an ethernet corotating gateway according to the present invention.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Referring to fig. 1, a block diagram of a design scheme of data forwarding according to the present invention is shown, and the method is applied to the internet of vision, specifically as follows:
the X86 sub-control equipment is connected to the main control equipment through tcp socket communication and maintains an active state through heartbeat; the X86 sub-control device communicates with the terminal through a tcp socket, and maintains an active state through heartbeat. The main control device, the sub control device, and the terminal device are provided in a 64-bit autonomous server (64-bit autonomous server system). Wherein the master device is the brain of the entire autonomous server. The video networking interface receives service instructions (such as starting a conference, stopping the conference and the like), and the main control equipment analyzes the video networking packet to obtain the service instructions and then sends the related service instructions to the video networking through the video networking interface; the sub-control equipment is connected under the main control equipment, and service data in the visual network is required to be sent and received by the sub-control equipment; the terminal equipment is connected under the sub-control equipment, and can be a computer, a camera monitoring equipment, a video networking terminal equipment and the like.
In the invention, a 64-bit autonomous server is arranged in a master micro cloud of the video network, a terminal is arranged in a slave micro cloud of the video network, one master control device is arranged in the same autonomous cloud, a plurality of sub-control devices are connected in the master control device, and a plurality of terminal devices are connected under each sub-control device.
Firstly, a terminal device 1 initiates a service, and sends a service signaling to an X86 sub-control device; then, the X86 sub-control device forwards the service signaling to the main control device, the main control device sends an opening service signaling to the X86 sub-control device, so that the X86 sub-control device forwards the opening service signaling to the terminal device 1 and other terminal devices, such as the terminal device 2, and the terminal device 1 receive the opening service signaling to indicate that a service data transmission channel is established between the terminal device 1 and the terminal device 2; finally, the terminal device 1 and the terminal device 2 can perform data interaction through the X86 sub-control device, if a service data transmission channel is established among the terminal device 1, the terminal device 2 and the terminal device 3, the terminal device 1 sends the data to be sent to the X86 sub-control device, and the X86 sub-control device copies the data to be sent instead of the data and sends the same data to the terminal device 2 and the terminal device 3 respectively.
The invention aims to realize the copying and forwarding of data in the autonomous cloud through the separate control equipment and orderly control the communication among the terminal equipment by the data forwarding method.
Referring to fig. 2, a flowchart illustrating steps of a method for forwarding data according to the present invention may specifically include the following steps:
step 201, receiving a service signaling sent by the first terminal device, and forwarding the service signaling to the master control device; the service signaling is used for requesting to establish a service data transmission channel between the first terminal device and the second terminal device.
In the embodiment of the invention, the method is applied to a first sub-control device in the data processing system of the video network, and the first sub-control device is respectively connected with a main control device, a first terminal device and a plurality of terminal devices of a second terminal device.
Firstly, a first terminal device under a first sub-control device initiates a service request, and sends a service signaling to the first terminal, wherein the service signaling comprises a video networking address of the first terminal device, a video networking address of a second terminal, and service types pre-established by the first terminal device and the second terminal device, such as live broadcast, video telephone, conference and the like.
Then, after receiving the service signaling, the first sub-control device returns a feedback message to the first terminal device, so that the first terminal device knows whether the service signaling is successfully sent or not; if the first terminal equipment fails to receive the feedback message, the first terminal equipment sends the service signaling to the first sub-control equipment again.
And finally, forwarding the service signaling to the main control equipment by the first sub-control equipment, and analyzing the service signaling by the main control equipment to obtain the video networking address of the first terminal equipment, the video networking address of the second terminal equipment and the request task type of the first terminal equipment. The main control equipment generates a multicast information table according to the video network address of the first terminal equipment, the video network address of the second terminal equipment and the request task type of the first terminal equipment. Specifically, the multicast information table has all network-accessed terminal equipment identifiers under each sub-control equipment of the main control equipment, if the second terminal equipment is in another autonomous cloud, the identifiers of the second terminal equipment are also added into the multicast information table through service signaling, and the main control equipment changes the state identifiers of the first terminal equipment and the second terminal equipment into an on state in the multicast information table. For example, the identifiers of the first terminal device and the second terminal device in the multicast information table are changed from 0 to 1, wherein 0 indicates that no service is performed, and 1 indicates that the service is performed.
And then, the main control equipment generates a first service starting signaling and a second service starting signaling, wherein the data head of the first service starting signaling carries the video network address of the first terminal equipment, and the data head of the second service starting signaling carries the video network address of the second terminal equipment. The main control equipment sends the first service opening signaling and the second service opening signaling to the first sub control equipment.
Step 202, receiving a first service opening signaling carrying the first terminal device video network address and a second service opening signaling carrying the second terminal device video network address, which are sent by the master control device.
In the embodiment of the invention, the first sub-control device receives the first service opening signaling and the second service opening signaling respectively.
Step 203, forwarding the first service opening signaling to the first terminal device, and forwarding the second service opening signaling to the second terminal device, so as to establish a service data transmission channel between the first terminal device and the second terminal device.
In the embodiment of the invention, the first sub-control device reads the data heads of the first service opening signaling and the second service opening signaling, forwards the first service opening signaling to the first terminal device, and forwards the second service opening signaling to the second terminal device, so that the first terminal device and the second terminal device know that a service data transmission channel is established between the first terminal device and the second terminal device, and the first terminal device and the second terminal device are ready for sending/receiving data.
And step 204, forwarding the service data between the first terminal equipment and the second terminal equipment through the service data transmission channel.
In the embodiment of the invention, a first terminal device sends service data to a first sub-control device, and the first sub-control device reads a multicast information table sent by a main control device to obtain a terminal device with an opening identifier in the multicast information table, for example, a terminal device with an identifier of 1 in the multicast information table; and sending the service data to the second terminal equipment. Correspondingly, the second terminal can also send the own service data to the second sub-control device, the first sub-control device reads the multicast information table sent by the main control device to obtain the terminal device with the starting identifier in the multicast information table, and the service data sent by the second terminal is forwarded to the first terminal device.
Preferably, in the embodiment of the present invention, the second terminal device may represent a plurality of terminal devices different from the first terminal device, and the first terminal device and the plurality of terminal devices may establish the service data transmission channel through the above method. The first sub-control device can copy the service data through the multicast information table after receiving the service data, and send the copied service data to other terminal devices.
In the embodiment of the invention, the first terminal sends the service signaling to the first sub-control equipment, initiates the service request, enables the first sub-control equipment to forward the service signaling to the main control equipment, generates the service starting signaling, and respectively sends the service starting signaling to the first terminal equipment and the second terminal equipment through the first sub-control equipment, thereby establishing a service data transmission channel between the first terminal equipment and the second terminal equipment, and enabling the first terminal equipment and the second terminal equipment to perform service data interaction with each other. The communication of each terminal device is orderly controlled, compared with the prior art that the data of the terminal device are forwarded by a chip, the cost is saved, the service data can be sent to more terminal devices according to the first sub-control device, and the flow direction of the service data can be mastered more easily.
Referring to fig. 3, a flow chart of the steps of data forwarding of the present invention is shown. The method comprises the following steps:
step 301, establishing communication connection among the sub-control device, the main control device and the terminal device.
In the embodiment of the invention, communication connection with the main control equipment, the first terminal equipment and the second terminal equipment is established; and maintaining the active states of the master control equipment, the first terminal equipment and the second terminal equipment by using heartbeats.
Specifically, a communication connection among a first sub-control device, a main control device, a first terminal device and a second terminal device through an Internet of view interface is established; the first sub-control equipment is connected to the main control equipment through tcp socket communication, and is in communication connection with the first terminal equipment and the second terminal equipment through tcp socket. The first sub-control equipment and the main control equipment inform respective states through heartbeat, judge whether the main control equipment and the first sub-control equipment are online according to heartbeat, inform respective states through heartbeat, judge whether the first sub-control equipment, the first terminal equipment and the second terminal equipment are online according to heartbeat, inform the main control equipment of network access states of the first terminal equipment and the second terminal equipment through heartbeat commands, and meanwhile the main control equipment stores the network access states after receiving the network access states of the terminal equipment.
Preferably, there are a plurality of terminal devices under the first sub-control device, such as terminal device 1, terminal device 2, terminal device 3, terminal device 5, etc., and the first sub-control device may establish a communication connection with the above terminal devices, which is not limited by the present invention.
In step 302, the first terminal device sends service signaling to the first sub-control device.
In the embodiment of the invention, a first terminal device sends a request for establishing a service to a first sub-control device in a service signaling mode. The service signaling carries the video network address of the first terminal device, the video network address of the second terminal device and the task type. The service signaling is used for requesting to establish a service data transmission channel between the first terminal device and the second terminal device.
Preferably, the service signaling may carry the video network addresses of the plurality of terminal devices, and the service signaling is used for requesting to establish a service data transmission channel between the first terminal device and the plurality of terminal devices.
In step 303, the first sub-control device forwards the service signaling to the master control device.
In the embodiment of the invention, the sub-control equipment does not process the received data. And the first sub-control equipment forwards the service signaling sent by the first terminal equipment to the main control equipment.
Step 304, the master control device sends a signaling for opening the service to the first sub control device.
In the embodiment of the invention, after receiving the service signaling, the master control equipment generates a multicast information table and a multicast address according to the terminal equipment address carried in the service signaling and the service type of the request. Wherein, the multicast address in one service can not be repeated with other services, and the multicast address can be used for knowing which terminal equipment is carrying out the service and who is carrying out the service; meanwhile, the multicast information table is provided with all network-accessed terminal equipment identifiers under each sub-control equipment of the main control equipment, if the second terminal equipment is in another autonomous cloud, the identifiers of the second terminal equipment are added into the multicast information table through service signaling, and the main control equipment changes the state identifiers of the first terminal equipment and the second terminal equipment into an on state in the multicast information table. For example, the identifiers of the first terminal device and the second terminal device in the multicast information table are changed from 0 to 1, wherein 0 indicates that no service is performed, and 1 indicates that the service is performed.
And then, the master control equipment checks whether the first sub control equipment is designated as a converter according to the MAC address of the first sub control equipment in the pre-configuration file, and checks whether the first sub control equipment is an upper and lower boundary sub control equipment, if so, the master control equipment regenerates a globally unique alternative multicast address.
And finally, the main control equipment respectively generates a first opening service signaling and a second opening service signaling, wherein the data head of the first opening service signaling carries the video networking address of the first terminal equipment, and the data head of the second opening service signaling carries the video networking address of the second terminal equipment. The main control equipment sends the first opening service signaling and the second opening service signaling to the first sub-control equipment.
In step 305, the first sub-control device forwards the open service signaling to the first terminal device and the second terminal device.
In the embodiment of the invention, the first sub-control device reads the data heads of the first service opening signaling and the second service opening signaling, forwards the first service opening signaling to the first terminal device, and forwards the second service opening signaling to the second terminal device, so that the first terminal device and the second terminal device know that a service data transmission channel is established between the first terminal device and the second terminal device, and the first terminal device and the second terminal device are ready for sending/receiving data.
In step 306, the first sub-control device receives the multicast link control information and the data source opening signaling sent by the master control device.
In the embodiment of the invention, the first sub-control device receives the multicast link control information and the data source opening signaling sent by the main control device, wherein the link multicast link control information comprises a multicast address.
Specifically, the master control device sends the multicast link control information to the first sub control device, where the multicast link control information includes a plurality of multicast information tables characterizing different services, a multicast address, and a replacement multicast address. And meanwhile, the anchor device opens a link switch between the first terminal device and the second terminal device, generates a data source opening signaling and sends the data source opening signaling to the first sub-control device.
In step 307, the first sub-control device forwards the data source open signaling and the multicast address to the first terminal device.
Specifically, judging whether the multicast address and the alternative multicast address are the same; if the multicast addresses are different, replacing the multicast addresses with the replacement multicast addresses.
In the embodiment of the invention, the data source opening signaling is used for notifying the first terminal equipment that the service data can be started to be sent to the first sub-control equipment. The multicast address is used for the first terminal to send the service data to the first sub-control device by taking the multicast address as a destination video network address.
And after the first sub-control equipment receives the multicast link control information, judging whether the multicast address and the replacement multicast address in the multicast link control information are the same.
If the multicast address and the data source opening signaling are the same, forwarding the multicast address and the data source opening signaling to the first terminal equipment;
and if the data source opening signaling is not the same, forwarding the alternative multicast address and the data source opening signaling to the first terminal equipment.
And the first terminal equipment receives the data source opening signaling, takes the multicast address or the alternative multicast address as a destination video network address, and sends the service data to the first sub-control equipment.
And step 308, the first sub-control device forwards the service data to the second terminal device according to the multicast information table.
In the embodiment of the invention, because the first sub-control device may simultaneously perform multiple groups of services, the first sub-control device has multiple multicast information tables. And the first sub-control equipment searches a corresponding multicast information table according to the multicast address after receiving the service data sent by the first terminal equipment. The first terminal device forwards the service data to the terminal device which is identified as 1 and is different from the first terminal device in the multicast information table, namely the second terminal device.
Referring to fig. 4, a flow chart of the steps of data forwarding according to the present invention is shown, wherein the master control device is connected to a second slave control device, and the second slave control device is connected to a plurality of terminal devices. The method comprises the following specific steps:
step 401, determining whether the service data needs to be forwarded to a plurality of terminal devices connected with the second control device according to the multicast information table.
In the embodiment of the invention, the first sub-control equipment, the second sub-control equipment and the main control equipment are connected, the first terminal equipment is connected to the first sub-control equipment, and a plurality of terminal equipment are connected under the second sub-control equipment.
After the service is established by the first terminal device and the plurality of terminal devices under the second sub-control device, the first sub-control device needs to search the multicast information table to determine whether service data sent by the first terminal device needs to be forwarded to the second sub-control device.
Specifically, after the first terminal device forwards the service signaling to the master control device through the first sub-control terminal, the master control device knows information of all sub-control devices connected with the master control device and all terminal devices under the sub-control devices, including: the main control equipment obtains the video network address of the terminal equipment carried in the service signaling after analyzing the service signaling, so that whether service data sent by the first terminal is required to be sent to the second sub control equipment and recorded in a multicast information table is known according to the video network address of the terminal equipment carried in the service signaling, and if so, the main control equipment sends multicast link control information and data source opening signaling to the second sub control equipment.
And step 402, copying the service data for multiple copies when determining that the service data needs to be forwarded to a plurality of terminal devices connected with the second control device.
In the embodiment of the invention, after receiving the service data sent by the first terminal device, the first sub-control device sends the service data to the second sub-control device through the anchor information table, and the second sub-control device copies the service data into a plurality of copies according to the identification of the terminal device in the multicast control information table.
And step 403, forwarding the copied multiple service data to multiple terminal devices connected with the second control device.
In the embodiment of the invention, the second control device sends the service data to the terminal device which is marked as 1 in each multicast information table and is different from the first terminal device.
In the embodiment of the invention, when the terminal equipment needs to send the service data to a plurality of other terminal equipment, only one service data is needed to be sent to the sub-control equipment, and then the sub-control service equipment copies and forwards the service data to the other terminal equipment, thereby solving the problems that the point-to-point data is easy to send, the data flow burst and the network data cannot be controlled in the prior art.
Referring to fig. 5, a functional block diagram of data forwarding of the present invention is shown. The method comprises the following steps:
In the embodiment of the invention, the service flow of data forwarding is mainly divided into two parts, namely unicast service and multicast service.
Unicast traffic: the terminal equipment initiates a service request (service signaling) and sends the service request to the X86 branch control equipment, the X86 branch control equipment forwards the service request to the main control service equipment, and the main control service equipment generates an opening service signaling which is forwarded to the corresponding terminal equipment by the X86 branch control equipment so as to inform the terminal equipment of service establishment. Then, the main control equipment generates data source opening information (data source opening signaling) and multicast link control information, and sends the data source opening information and the multicast link control information to the X86 sub-control equipment, wherein the multicast link control information comprises a multicast address, a substituted multicast address and a multicast information table; the X86 sub-control device opens the data source carrying the multicast address or the alternative multicast address to the terminal device. The X86 sub-control device sends the service data to the terminal device which initiates the service request.
Multicast service: the terminal equipment sends the audio and video data to the X86 sub-control equipment according to the multicast address or the alternative multicast address; the X86 branch control equipment determines to copy and forward the service data to other terminal equipment below the X86 branch control equipment according to the multicast information table, or to forward the service data to other X86 branch control equipment, and then the other X86 branch control equipment copies and forwards the service data to the terminal equipment below the X86 branch control equipment.
The beneficial effects of the embodiment are that:
the invention sends the service signaling to the first sub-control equipment through the first terminal, initiates the service request, causes the first sub-control equipment to forward the service signaling to the main control equipment, generates the service starting signaling, and respectively sends the service starting signaling to the first terminal equipment and the second terminal equipment through the first sub-control equipment, thereby establishing a service data transmission channel between the first terminal equipment and the second terminal equipment, and enabling the first terminal equipment and the second terminal equipment to mutually carry out service data interaction; the first sub-control equipment is used for copying and forwarding the service data, so that the communication of each terminal equipment is orderly controlled, compared with the prior art that the data of the terminal equipment are forwarded by a chip, the cost is saved, the service data can be sent to more terminal equipment according to the first sub-control equipment, the flow direction of the service data is mastered more easily, and the flow explosion of the terminal equipment is avoided.
It should be noted that, for simplicity of description, the method embodiments are shown as a series of acts, but it should be understood by those skilled in the art that the embodiments are not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred embodiments, and that the acts are not necessarily required by the embodiments of the invention.
Referring to fig. 6, there is shown a block diagram of a data forwarding apparatus according to the present invention, which is applied to a first sub-control device in an internet-of-view data processing system, where the first sub-control device is connected to a main control device, a first terminal device, and a plurality of terminal devices of a second terminal device, respectively; the method specifically comprises the following modules:
a communication establishing module 601, configured to establish a communication connection with the master control device, the first terminal device, and the second terminal device;
the state maintaining module 602 is configured to maintain an active state with the master device, the first terminal device, and the second terminal device with a heartbeat.
A first receiving module 603, configured to receive a service signaling sent by the first terminal device, and forward the service signaling to the master control device; the service signaling is used for requesting to establish a service data transmission channel between the first terminal equipment and the second terminal equipment;
a second receiving module 604, configured to receive a first service opening signaling carrying an address of the first terminal device and a second service opening signaling carrying an address of the second terminal device, where the first service opening signaling is sent by the master control device;
An open service signaling forwarding module 605, configured to forward the first service open signaling to the first terminal device and forward the second service open signaling to the second terminal device, so as to establish a service data transmission channel between the first terminal device and the second terminal device;
a first service data forwarding module 606, configured to forward service data between the first terminal device and the second terminal device through the service data transmission channel.
Preferably, the first service data forwarding module 606 further includes the following sub-modules:
the information receiving sub-module is used for receiving multicast link control information and a data source opening signaling sent by the main control equipment, wherein the link multicast link control information comprises a multicast address;
the multicast link control information also includes a replacement multicast address;
the address judging module sub-module is used for judging whether the multicast address and the alternative multicast address are the same or not;
and the address replacement module sub-module is used for replacing the multicast address with the replacement multicast address if the multicast address is different.
A data forwarding sub-module, configured to forward the multicast address and the data source opening signaling to the first terminal device;
The data searching sub-module is used for receiving the service data sent by the first terminal equipment and searching a multicast information table according to the multicast address;
and the service data forwarding sub-module is used for forwarding the service data to the second terminal equipment according to the multicast information table.
Preferably, the main control device is connected with a second sub control device, and the second sub control device is connected with a plurality of terminal devices; the device further comprises:
a terminal equipment determining module, configured to determine whether the service data needs to be forwarded to a plurality of terminal equipments connected to the second control device according to the multicast information table;
the business data copying module is used for copying the business data for a plurality of copies when determining that the business data needs to be forwarded to a plurality of terminal devices connected with the second branch control device;
and the second service data forwarding module is used for forwarding the copied multiple service data to multiple terminal devices connected with the second control division device.
Based on the same inventive concept, another embodiment of the present invention provides a computer readable storage medium, on which a computer program is stored, which program, when being executed by a processor, realizes the steps in the method according to any of the embodiments described in the present application.
Based on the same inventive concept, another embodiment of the present invention provides an electronic device, including a memory, a processor, and a computer program stored on the memory and running on the processor again, where the processor executes to implement the steps in the method described in any of the foregoing embodiments of the present application.
For the device embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, and reference is made to the description of the method embodiments for relevant points.
For a better understanding of embodiments of the present invention, the following description of the video networking is presented to one skilled in the art:
networking of the video networking is as follows:
the video networking is a centrally controlled network structure, which may be of the tree network, star network, ring network, etc., but on the basis of this there is a need for a centralized control node in the network to control the whole network.
As shown in fig. 7, the view network is divided into an access network and a metropolitan area network.
The devices of the access network part can be mainly divided into 3 classes: node server, access switch, terminal (including various set-top boxes, code boards, memories, etc.). The node server is connected with an access switch, which can be connected with a plurality of terminals and can be connected with an Ethernet.
The node server is a node with a centralized control function in the access network, and can control the access switch and the terminal. The node server may be directly connected to the access switch or may be directly connected to the terminal.
Similarly, devices of the metropolitan area network portion can also be classified into 3 categories: metropolitan area server, node switch, node server. The metro server is connected to a node switch, which may be connected to a plurality of node servers.
The node server is the node server of the access network part, namely the node server belongs to the access network part and also belongs to the metropolitan area network part.
The metropolitan area server is a node with centralized control function in the metropolitan area network, and can control a node switch and a node server. The metropolitan area server may be directly connected to the node switch or directly connected to the node server.
Thus, the whole video network is a hierarchical centralized control network structure, and the network controlled by the node server and the metropolitan area server can be in various structures such as tree, star, ring and the like.
The access network part can be vividly called as a unified video platform (part in a dotted circle), and a plurality of unified video platforms can form a video network; each unified video platform can be interconnected and intercommunicated through metropolitan area and wide area video networking.
View networking device classification
1.1 devices in the visual network according to the embodiment of the present invention may be mainly classified into 3 types: a server, a switch (including an ethernet gateway), a terminal (including various set-top boxes, a code board, a memory, etc.). The view networking can be divided into metropolitan area networks (or national networks, global networks, etc.) and access networks as a whole.
1.2 devices in the access network part can be mainly classified into 3 classes: node server, access switch (including Ethernet gateway), terminal (including various set-top boxes, code board, memory, etc.).
The specific hardware structure of each access network device is as follows:
the node server:
as shown in fig. 8, the device mainly comprises a network interface module 201, a switching engine module 202, a CPU module 203 and a disk array module 204;
wherein, the network interface module 201, the cpu module 203 and the disk array module 204 all enter the switching engine module 202; the switching engine module 202 performs an operation of looking up the address table 205 on the incoming packet, thereby obtaining packet guiding information; and stores the packet into a corresponding queue of the packet buffer 206 according to the packet's guiding information; discarding if the queue of the packet buffer 206 is nearly full; the switch engine module 202 polls all packet buffer queues for forwarding if the following conditions are met: 1) The port sending buffer is not full; 2) The queue packet counter is greater than zero. The disk array module 204 mainly controls the hard disk, including initializing, reading and writing operations on the hard disk; the CPU module 203 is mainly responsible for protocol processing with access switches and terminals (not shown), configuration of the address table 205 (including a downstream protocol packet address table, an upstream protocol packet address table, and a data packet address table), and configuration of the disk array module 204.
Access switch:
as shown in fig. 9, mainly includes a network interface module (a downstream network interface module 301, an upstream network interface module 302), a switching engine module 303, and a CPU module 304;
wherein, the packet (uplink data) coming in from the downlink network interface module 301 enters the packet detection module 305; the packet detection module 305 detects whether the Destination Address (DA), source Address (SA), packet type, and packet length of the packet meet the requirements, if so, allocates a corresponding stream identifier (stream-id), and enters the switching engine module 303, otherwise, discards the packet; the packets (downstream data) coming in from the upstream network interface module 302 enter the switching engine module 303; the data packet coming in from the CPU module 304 enters the switching engine module 303; the switching engine module 303 performs an operation of looking up an address table 306 on an incoming packet, thereby obtaining packet guiding information; if a packet entering the switching engine module 303 is sent from the downstream network interface to the upstream network interface, the packet is stored in the queue of the corresponding packet buffer 307 in association with a stream identifier (stream-id); discarding if the queue of the packet buffer 307 is nearly full; if the packet entering the switching engine module 303 is not sent from the downlink network interface to the uplink network interface, storing the data packet into the queue of the corresponding packet buffer 307 according to the packet guiding information; if the queue of the packet buffer 307 is nearly full, it is discarded.
The switch engine module 303 polls all packet buffer queues, in two cases in the embodiment of the present invention:
if the queue is sent from the downlink network interface to the uplink network interface, the following conditions are satisfied for forwarding: 1) The port sending buffer is not full; 2) The queue packet counter is greater than zero; 3) Obtaining a token generated by a code rate control module;
if the queue is not addressed by the downstream network interface to the upstream network interface, the following condition is satisfied for forwarding: 1) The port sending buffer is not full; 2) The queue packet counter is greater than zero.
The rate control module 208 is configured by the CPU module 204 to generate tokens for all packet buffer queues from the downstream network interface to the upstream network interface at programmable intervals to control the rate of upstream forwarding.
The CPU module 304 is mainly responsible for protocol processing with the node server, configuration of the address table 306, and configuration of the rate control module 308.
Ethernet corotation gateway：
As shown in fig. 10, the device mainly includes a network interface module (a downstream network interface module 401 and an upstream network interface module 402), a switching engine module 403, a CPU module 404, a packet detection module 405, a rate control module 408, an address table 406, a packet buffer 407, a MAC adding module 409, and a MAC deleting module 410.
Wherein, the data packet coming in from the downlink network interface module 401 enters the packet detection module 405; the packet detection module 405 detects whether the ethernet MAC DA, ethernet MAC SA, ethernet length or frame type, video network destination address DA, video network source address SA, video network packet type and packet length of the data packet meet the requirements, and if so, allocates a corresponding stream identifier (stream-id); then, the MAC DA, MAC SA, length or frame type (2 byte) are subtracted by the MAC delete module 410 and enter the corresponding receive buffer, otherwise discarded;
the downlink network interface module 401 detects the sending buffer of the port, if there is a packet, acquires the ethernet MAC DA of the corresponding terminal according to the destination address DA of the packet's internet of view, adds the ethernet MAC DA of the terminal, the MAC SA of the ethernet cooperative gateway, and the ethernet length or frame type, and sends.
The function of the other modules in the ethernet corotation gateway is similar to that of the access switch.
And (3) a terminal:
the system mainly comprises a network interface module, a service processing module and a CPU module; for example, the set top box mainly comprises a network interface module, a video/audio encoding/decoding engine module and a CPU module; the coding board mainly comprises a network interface module, a video and audio coding engine module and a CPU module; the memory mainly comprises a network interface module, a CPU module and a disk array module.
1.3 devices of the metropolitan area network part can be mainly classified into 2 classes: node server, node switch, metropolitan area server. The node switch mainly comprises a network interface module, a switching engine module and a CPU module; the metropolitan area server mainly comprises a network interface module, a switching engine module and a CPU module.
2. View networking data packet definition
2.1 Access network packet definition
The data packet of the access network mainly comprises the following parts: destination Address (DA), source Address (SA), reserved bytes, payload (PDU), CRC.
As shown in the following table, the data packet of the access network mainly includes the following parts:
| DA | SA | Reserved | Payload | CRC |
wherein:
the Destination Address (DA) is composed of 8 bytes (byte), the first byte represents the type of data packet (such as various protocol packets, multicast data packets, unicast data packets, etc.), 256 possibilities are at most provided, the second byte to the sixth byte are metropolitan area network addresses, and the seventh and eighth bytes are access network addresses;
the Source Address (SA) is also composed of 8 bytes (bytes), defined identically to the Destination Address (DA);
the reserved bytes consist of 2 bytes;
the payload portion has different lengths according to the types of the different datagrams, and is 64 bytes if it is various protocol packets, and 32+1024=1056 bytes if it is a unicast packet, and is of course not limited to the above 2 types;
The CRC consists of 4 bytes and its calculation method follows the standard ethernet CRC algorithm.
2.2 metropolitan area network packet definition
The topology of the metropolitan area network is a pattern, there may be 2 or even more than 2 connections between two devices, i.e. there may be more than 2 connections between node switches and node servers, node switches and node switches, node switches and node servers. However, the metropolitan area network address of the metropolitan area network device is unique, and in order to accurately describe the connection relationship between metropolitan area network devices, parameters are introduced in the embodiment of the present invention: a tag to uniquely describe a metropolitan area network device.
The definition of label in this specification is similar to that of MPLS (Multi-Protocol Label Switch, multiprotocol label switching), and assuming that there are two connections between device a and device B, there are 2 labels for packets from device a to device B and 2 labels for packets from device B to device a. The label is split into label and label out, and assuming that the label (in label) of the packet entering the device a is 0x0000, the label (out label) of the packet when leaving the device a may become 0x0001. The network access process of the metropolitan area network is a network access process under centralized control, that is, the address allocation and label allocation of the metropolitan area network are all led by the metropolitan area server, the node switch and the node server are all passively executed, which is different from the label allocation of the MPLS, which is the result of mutual negotiation between the switch and the server.
As shown in the following table, the data packet of the metropolitan area network mainly includes the following parts:
| DA | SA | Reserved | label (Label) | Payload | CRC |
I.e. Destination Address (DA), source Address (SA), reserved bytes (Reserved), labels, payload (PDU), CRC. Wherein the format of the tag may be defined with reference to the following: the tag is 32 bits, with the high 16bit reservation, with only the low 16bit, and its position is between the reserved bytes and payload of the packet.
Based on the above characteristics of the internet of view, one of the core concepts of the embodiment of the present invention is provided, and the service data is forwarded to other terminal devices by the branch control device following the protocol of the internet of view.
In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described by differences from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.
It will be apparent to those skilled in the art that embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the invention may take the form of a computer program product on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or terminal device comprising the element.
The foregoing has described in detail the method, apparatus, device and medium for forwarding data provided by the present invention, and specific examples have been applied herein to illustrate the principles and embodiments of the present invention, and the above description of the examples is only for aiding in understanding the method and core idea of the present invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Claims (8)
1. The data forwarding method is characterized by being applied to first sub-control equipment in an Internet of view data processing system, wherein the first sub-control equipment is respectively connected with a main control equipment, a first terminal equipment and a plurality of terminal equipment of a second terminal equipment; the method comprises the following steps:
receiving a service signaling sent by the first terminal equipment, and forwarding the service signaling to the main control equipment; the service signaling is used for requesting to establish a service data transmission channel between the first terminal equipment and the second terminal equipment;
receiving a first service opening signaling carrying the first terminal equipment video network address and a second service opening signaling carrying the second terminal equipment video network address, which are sent by the main control equipment;
Forwarding the first service opening signaling to the first terminal equipment, and forwarding the second service opening signaling to the second terminal equipment so as to establish a service data transmission channel between the first terminal equipment and the second terminal equipment; the first service opening signaling is used for changing the state of the first terminal device into a service state, and the second service opening signaling is used for changing the state of the second terminal device into the service state;
forwarding service data between the first terminal device and the second terminal device through the service data transmission channel;
the forwarding the service data between the first terminal device and the second terminal device through the service data transmission channel includes:
receiving multicast link control information and a data source opening signaling sent by the main control equipment, wherein the multicast link control information comprises a multicast address and the alternative multicast address; the alternative multicast address is generated when the master control device determines that the first sub-control device is designated as a converter and is an upper and lower boundary sub-control device;
determining a target multicast address according to the multicast address and the alternative multicast address;
Forwarding the target multicast address and the data source opening signaling to the first terminal device;
receiving service data sent by the first terminal equipment, and searching a multicast information table according to the target multicast address;
and forwarding the service data to the second terminal equipment according to the multicast information table.
2. The method of claim 1, wherein the multicast link control information further comprises a replacement multicast address; before the step of forwarding the multicast address and the data source opening signaling to the first terminal device, the method further includes:
judging whether the multicast address and the alternative multicast address are the same;
if the multicast addresses are different, replacing the multicast addresses with the replacement multicast addresses.
3. The method of claim 1, wherein before the step of receiving the service signaling sent by the first terminal device and forwarding the service signaling to the master device, further comprises:
establishing communication connection with the main control equipment, the first terminal equipment and the second terminal equipment;
and maintaining the active states of the master control equipment, the first terminal equipment and the second terminal equipment by using heartbeats.
4. The method of claim 1, wherein the master device is connected to a second slave device, the second slave device being connected to a plurality of terminal devices; the method further comprises the steps of:
determining whether the service data needs to be forwarded to a plurality of terminal devices connected with the second control device according to the multicast information table;
when determining that the service data needs to be forwarded to a plurality of terminal devices connected with the second branch control device, copying the service data for a plurality of copies;
and forwarding the copied multiple service data to multiple terminal devices connected with the second control device.
5. The data forwarding device is characterized by being applied to first sub-control equipment in an Internet of view data processing system, wherein the first sub-control equipment is respectively connected with a main control equipment, a first terminal equipment and a plurality of terminal equipment of a second terminal equipment; the device comprises:
the first receiving module is used for receiving the service signaling sent by the first terminal equipment and forwarding the service signaling to the main control equipment; the service signaling is used for requesting to establish a service data transmission channel between the first terminal equipment and the second terminal equipment;
The second receiving module is used for receiving a first service opening signaling carrying the first terminal equipment video network address and a second service opening signaling carrying the second terminal equipment video network address, which are sent by the main control equipment; the first service opening signaling is used for changing the state of the first terminal device into a service state, and the second service opening signaling is used for changing the state of the second terminal device into the service state;
the starting service signaling forwarding module is used for forwarding the first service starting signaling to the first terminal equipment and forwarding the second service starting signaling to the second terminal equipment so as to establish a service data transmission channel between the first terminal equipment and the second terminal equipment;
the first service data forwarding module is used for forwarding service data between the first terminal equipment and the second terminal equipment through the service data transmission channel;
the first service data forwarding module includes:
the information receiving sub-module is used for receiving multicast link control information and a data source opening signaling sent by the main control equipment, wherein the multicast link control information comprises a multicast address and a replacement multicast address; the alternative multicast address is generated when the master control device determines that the first sub-control device is designated as a converter and is an upper and lower boundary sub-control device;
A data forwarding sub-module, configured to determine a target multicast address according to the multicast address and the alternative multicast address, and forward the target multicast address and the data source opening signaling to the first terminal device;
the data searching sub-module is used for receiving the service data sent by the first terminal equipment and searching a multicast information table according to the target multicast address;
and the service data forwarding sub-module is used for forwarding the service data to the second terminal equipment according to the multicast information table.
6. The apparatus of claim 5, wherein the multicast link control information further comprises a replacement multicast address; the device further comprises:
the address judging module sub-module is used for judging whether the multicast address and the alternative multicast address are the same or not;
and the address replacement module sub-module is used for replacing the multicast address with the replacement multicast address if the multicast address is different.
7. A computer readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements the steps of the method according to any of claims 1-4.
8. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor performs the steps of the method according to any of claims 1-4.
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