CN110944148A - Method and device for transferring monitoring resources based on video network - Google Patents
Method and device for transferring monitoring resources based on video network Download PDFInfo
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- CN110944148A CN110944148A CN201911014295.7A CN201911014295A CN110944148A CN 110944148 A CN110944148 A CN 110944148A CN 201911014295 A CN201911014295 A CN 201911014295A CN 110944148 A CN110944148 A CN 110944148A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/647—Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless
- H04N21/64723—Monitoring of network processes or resources, e.g. monitoring of network load
- H04N21/64738—Monitoring network characteristics, e.g. bandwidth, congestion level
Abstract
The embodiment of the invention provides a method and a device for transferring monitoring resources based on a video network. In the application, a backup server is not required to be equipped for the node servers of the video network, the current load of a first node server of the plurality of node servers of the video network can be obtained in real time or periodically, then whether the current load exceeds a preset load or not is determined, the preset load is smaller than the rated load of the first node server of the video network, under the condition that the current load exceeds the preset load, part of monitoring resources managed by the first node server of the video network can be transferred to a second node server of the video network for management, so that the load of the first node server of the video network can be reduced, the first node server of the video network can continue to work normally after the first node server of the video network, a new request can be processed continuously, and the backup server is not required, so that the hardware cost can be reduced.
Description
Technical Field
The invention relates to the technical field of data processing, in particular to a method and a device for transferring monitoring resources based on a video network.
Background
Nowadays, in order to provide safety prevention and guarantee for the work and life of people, a monitoring camera is often arranged at an important position, and a monitoring video stream at the important position is recorded through the monitoring camera.
Then, the user can check the monitoring video stream recorded by the monitoring camera by using a computer, check whether suspicious people exist in the monitoring video stream, and the like.
In reality, the number of monitoring cameras is very large, a plurality of node servers need to be arranged, and then each node server is used for managing a part of the monitoring cameras respectively.
When a user needs to call the monitoring video stream, the monitoring video stream recorded by the monitoring camera can be called through the node server.
However, if a large number of users call the monitoring video stream via the same node server in a short period of time, the node server is likely to be overloaded and may be down, and if the node server is down, the monitoring video stream recorded by the monitoring camera managed by the node server cannot be called afterwards.
In order to solve the problem, each node server may be provided with a backup server, and when the node server is down, the backup server may be used to invoke the surveillance video stream for the user.
However, the inventor found that providing a backup server for each node server increases the hardware cost, and if the backup server of a certain node server is down, the monitoring video stream recorded by the monitoring camera managed by the node server cannot be called later.
Disclosure of Invention
In order to solve the above problem, an embodiment of the present invention illustrates a method and an apparatus for transferring monitoring resources based on a video network.
In a first aspect, an embodiment of the present invention shows a method for transferring monitoring resources based on a video network, where the video network includes a video network central server and a plurality of video network node servers, and each video network node server manages a plurality of video network monitoring resources, respectively, where the method includes:
obtaining a current load of a first of the plurality of nodes of the video network;
determining whether the current load exceeds a preset load, wherein the preset load is smaller than the rated load of the first video networking node server;
and under the condition that the current load exceeds the preset load, transferring part of monitoring resources managed by the first video network node server to a second video network node server for management.
In an optional implementation manner, the obtaining a current load of a first of the plurality of nodes of the internet of view server includes:
at least obtaining the system resource utilization rate and/or the network resource utilization rate of the first video networking node server;
and acquiring the current load of the first video network node server at least according to the system resource utilization rate and/or the network resource utilization rate.
In an alternative implementation, the transferring of the part of the monitoring resources managed by the first node server to the second node server management includes:
determining, among the plurality of video networking node servers other than the first video networking node server, a video networking node server with a lowest load as a second video networking node server;
and transferring part of monitoring resources managed by the first video network node server to the second video network node server for management.
In an alternative implementation, the transferring of the part of the monitoring resources managed by the first node server to the second node server management includes:
acquiring at least part of virtual terminal numbers from a plurality of virtual terminal numbers in the first video network node server, wherein each virtual terminal number is used for managing at least one video network monitoring resource;
and for each acquired virtual terminal number, deleting the virtual terminal number and the resource identifier of the monitoring resource managed by the virtual terminal number from the first video network node server, and storing the virtual terminal number and the resource identifier of the monitoring resource managed by the virtual terminal number in the second video network node server.
In an optional implementation, the method further includes:
restarting the first video networking node server.
In an optional implementation, the method further includes:
and sending prompt information to a terminal used by a technician, wherein the prompt information is used for prompting that the current load of the first video network node server exceeds a preset load.
In a second aspect, an embodiment of the present invention shows an apparatus for transferring monitoring resources based on an internet of view, where the internet of view includes a central server of the internet of view and a plurality of node servers of the internet of view, and each node server of the internet of view manages a plurality of monitoring resources of the internet of view respectively, the apparatus includes:
an obtaining module, configured to obtain a current load of a first video networking node server of the plurality of video networking node servers;
the determining module is used for determining whether the current load exceeds a preset load, wherein the preset load is smaller than the rated load of the first video network node server;
and the transfer module is used for transferring part of monitoring resources managed by the first video network node server to a second video network node server for management under the condition that the current load exceeds the preset load.
In an optional implementation manner, the obtaining module includes:
a first obtaining unit, configured to obtain at least a system resource utilization rate and/or a network resource utilization rate of the first video networking node server;
and the second acquisition unit is used for acquiring the current load of the first video network node server at least according to the system resource utilization rate and/or the network resource utilization rate.
In an optional implementation, the transfer module includes:
a determining unit, configured to determine, among the plurality of view networking node servers except the first view networking node server, a view networking node server with a lowest load as a second view networking node server;
and the first transfer unit is used for transferring part of monitoring resources managed by the first video network node server to the second video network node server for management.
In an optional implementation, the transfer module includes:
a third obtaining unit, configured to obtain at least part of virtual terminal numbers from multiple virtual terminal numbers in the first video networking node server, where each virtual terminal number is used to manage at least one video networking monitoring resource;
the system comprises a deleting unit used for deleting the virtual terminal number and the resource identifier of the monitoring resource managed by the virtual terminal number from the first video network node server for each acquired virtual terminal number, and a storing unit used for storing the virtual terminal number and the resource identifier of the monitoring resource managed by the virtual terminal number in the second video network node server.
In an optional implementation, the apparatus further comprises:
and the restarting module is used for restarting the first video network node server.
In an optional implementation, the apparatus further comprises:
and the sending module is used for sending prompt information to a terminal used by a technician, wherein the prompt information is used for prompting that the current load of the first video network node server exceeds a preset load.
In a third aspect, the embodiment of the present invention shows an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the processor implements the method for transferring the monitoring resource based on the internet of view according to the first aspect.
In a fourth aspect, the embodiment of the present invention shows a computer-readable storage medium, on which a computer program is stored, the computer program causing a processor to execute the method for transferring a monitoring resource based on a video network according to the first aspect.
The embodiment of the invention has the following advantages:
in the application, a backup server is not required to be equipped for the node servers of the video network, the current load of a first node server of the plurality of node servers of the video network can be obtained in real time or periodically, then whether the current load exceeds a preset load or not is determined, the preset load is smaller than the rated load of the first node server of the video network, under the condition that the current load exceeds the preset load, part of monitoring resources managed by the first node server of the video network can be transferred to a second node server of the video network for management, so that the load of the first node server of the video network can be reduced, the first node server of the video network can continue to work normally after the first node server of the video network, a new request can be processed continuously, and the backup server is not required, so that the hardware cost can be reduced.
Drawings
Fig. 1 is a block diagram of a video network according to an embodiment of the present invention.
Fig. 2 is a flowchart illustrating steps of a method for transferring monitoring resources based on a video network according to an embodiment of the present invention.
Fig. 3 is a block diagram of a device for transferring monitoring resources based on a video network according to an embodiment of the present invention.
Fig. 4 is a networking schematic diagram of a video network of the present invention.
Fig. 5 is a schematic hardware structure diagram of a node server of the video network according to the invention.
Fig. 6 is a schematic diagram of a hardware structure of an access switch of the present invention.
Fig. 7 is a schematic diagram of a hardware structure of an ethernet protocol conversion gateway according to the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1, a block diagram of an embodiment of the present invention is shown, where the network includes: the system comprises a video network central server 01 and a plurality of video network node servers 02, wherein the video network central server 01 is in communication connection with each video network node server 02 based on a video network protocol, and each video network node server manages a plurality of video network monitoring resources 03 respectively.
The video network monitoring resource 03 comprises a monitoring camera, and the monitoring camera is at least used for recording monitoring video streams.
Referring to fig. 2, a flowchart illustrating steps of a method for transferring monitoring resources based on a video network according to an embodiment of the present invention is shown, where the method may be applied to the video network central server 01 shown in fig. 1, and the method may specifically include the following steps:
in step S101, a current load of a first of the plurality of view network node servers is obtained;
in the application, the central server of the video networking is in communication connection with the first node server of the video networking based on a video networking protocol, and the first node server of the video networking uploads the system resource utilization rate and/or the network resource utilization rate of the first node server of the video networking in real time or at regular time to the central server of the video networking, wherein the system resource utilization rate at least comprises a Central Processing Unit (CPU) utilization rate, a memory utilization rate and the like, so that the central server of the video networking can at least obtain the system resource utilization rate and/or the network resource utilization rate of the first node server of the video networking; the current load of the first view network node server may then be obtained at least according to the system resource utilization rate and/or the network resource utilization rate, for example, the system resource utilization rate and/or the network resource utilization rate may be weighted and summed to obtain the current load, and the like. The current load may also be obtained in other manners according to the system resource utilization rate and/or the network resource utilization rate, and the specific obtaining manner is not limited in the present application.
In step S102, determining whether the current load exceeds a preset load, where the preset load is smaller than a rated load of the first node server of the video network;
in the application, the rated load of the first video network node server is the maximum load that the first video network node server can bear, and when the load of the first video network node server is the rated load, the first video network node server works at full load, and cannot continuously process new requests when the first video network node server works at full load.
The preset load may be 70%, 80%, 90%, or the like of the rated load, which is not limited in the present application.
For example, in the present application, the CPU utilization rate is already up to 90%, or the memory utilization rate is already up to 85%, or the network bandwidth utilization rate is already up to 92%, which often means that the current node of the first node server of the video networking is very high, or the network of the node server of the video networking is disconnected, that is, the node server of the video networking cannot be connected to the network, and the network load of the node server of the video networking can also be regarded as very high, and it can be determined that the current load exceeds the preset load.
In the case that the current load exceeds the preset load, in step S103, part of the monitoring resources managed by the first node server of the video network is transferred to the second node server of the video network for management.
Before transferring part of monitoring resources managed by the first video network node server to the second video network node server for management, the current load of the second video network node server does not exceed the preset load, and after transferring part of monitoring resources managed by the first video network node server to the second video network node server for management, the load of the second video network node server does not exceed the preset load.
In one embodiment of the present application, in order to avoid that the central video networking server frequently switches monitoring resources among the plurality of video networking node servers, in the present application, the video networking node server with the lowest load may be determined as the second video networking node server among the video networking node servers except the first video networking node server; and then transferring part of monitoring resources managed by the first video network node server to the second video network node server for management.
In another embodiment of the present application, each of the nodes in the internet of view server manages at least one virtual terminal number, each of the virtual terminal numbers is used for managing at least one monitoring resource, when a user needs to invoke a certain monitoring resource, the monitoring resource needs to be invoked according to the virtual terminal number for managing the monitoring resource, and the virtual terminal number for managing the monitoring resource is managed by one node in the internet of view server, that is, the user needs to invoke the monitoring resource via the virtual terminal number managed by the node in the internet of view server.
Therefore, if part of the monitoring resources managed by the first video network node server is to be transferred to the second video network node server for management, at least part of the virtual terminal numbers can be acquired from the plurality of virtual terminal numbers in the first video network node server, and then for any one of the acquired virtual terminal numbers, the virtual terminal number and the resource identifier of the monitoring resource managed by the virtual terminal number are deleted from the first video network node server, and the virtual terminal number and the resource identifier of the monitoring resource managed by the virtual terminal number are stored in the second video network node server. The same is true for each of the other virtual terminal numbers that are acquired.
In this application, the central server of the video network and the first node server of the video network are communicatively connected, and the central server of the video network may directly control the first node server of the video network, for example, send a control instruction to the first node server of the video network, so that the first node server of the video network deletes the virtual terminal number and the resource identifier of the monitoring resource managed by the virtual terminal number according to the control instruction, and send another control instruction to the second node server of the video network, so that the second node server of the video network stores the virtual terminal number and the resource identifier of the monitoring resource managed by the virtual terminal number in the second node server of the video network according to another control instruction.
In another embodiment of the present application, in the case that the current load does not exceed the preset load, the step S101 may be performed periodically.
Further, sometimes the current load of the first node server of the video network exceeds the preset load is caused by the network disconnection of the first node server of the video network, but the connection between the first node server of the video network and the central server of the video network is not disconnected, or the first node server of the video network is occupied by other illegal programs and occupies too much system resources, so that the first node server of the video network cannot continue to work normally, therefore, in order to enable the first node server of the video network to continue to work normally later, the first node server of the video network can be restarted, wherein the central server of the video network can send a control instruction to the node server of the video network to control the node server of the video network to restart, the node server of the video network can control itself to restart after receiving the control instruction, and after restarting, the first apparent network node server will re-attempt to connect to the network so that the first apparent network node server can re-connect to the network and continue to process new requests.
In another embodiment of the application, when the current load exceeds the preset load, a prompt message can be sent to a terminal used by a technician, where the prompt message is used to prompt that the current load of the first node server of the video network exceeds the preset load, so that the technician can know that the current load of the first node server of the video network exceeds the preset load according to the prompt message, and further can pay key attention to the first node server of the video network.
In the application, a backup server is not required to be equipped for the node servers of the video network, the current load of a first node server of the plurality of node servers of the video network can be obtained in real time or periodically, then whether the current load exceeds a preset load or not is determined, the preset load is smaller than the rated load of the first node server of the video network, under the condition that the current load exceeds the preset load, part of monitoring resources managed by the first node server of the video network can be transferred to a second node server of the video network for management, so that the load of the first node server of the video network can be reduced, the first node server of the video network can continue to work normally after the first node server of the video network, a new request can be processed continuously, and the backup server is not required, so that the hardware cost can be reduced.
It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the illustrated order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments of the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.
Referring to fig. 3, a block diagram of a configuration of an apparatus for transferring monitoring resources based on an internet of view according to an embodiment of the present invention is shown, where the internet of view includes a central server of the internet of view and a plurality of node servers of the internet of view, and each node server of the internet of view manages a plurality of monitoring resources of the internet of view respectively, and the apparatus may specifically include the following modules:
an obtaining module 11, configured to obtain a current load of a first video networking node server in the multiple video networking node servers;
a determining module 12, configured to determine whether the current load exceeds a preset load, where the preset load is smaller than a rated load of the first node server of the video networking;
and a transfer module 13, configured to transfer, when the current load exceeds the preset load, a part of monitoring resources managed by the first view network node server to a second view network node server for management.
In an optional implementation manner, the obtaining module 11 includes:
a first obtaining unit, configured to obtain at least a system resource utilization rate and/or a network resource utilization rate of the first video networking node server;
and the second acquisition unit is used for acquiring the current load of the first video network node server at least according to the system resource utilization rate and/or the network resource utilization rate.
In an optional implementation manner, the transfer module 13 includes:
a determining unit, configured to determine, among the plurality of view networking node servers except the first view networking node server, a view networking node server with a lowest load as a second view networking node server;
and the first transfer unit is used for transferring part of monitoring resources managed by the first video network node server to the second video network node server for management.
In an optional implementation manner, the transfer module 13 includes:
a third obtaining unit, configured to obtain at least part of virtual terminal numbers from multiple virtual terminal numbers in the first video networking node server, where each virtual terminal number is used to manage at least one video networking monitoring resource;
the system comprises a deleting unit used for deleting the virtual terminal number and the resource identifier of the monitoring resource managed by the virtual terminal number from the first video network node server for each acquired virtual terminal number, and a storing unit used for storing the virtual terminal number and the resource identifier of the monitoring resource managed by the virtual terminal number in the second video network node server.
In an optional implementation, the apparatus further comprises:
and the restarting module is used for restarting the first video network node server.
In an optional implementation, the apparatus further comprises:
and the sending module is used for sending prompt information to a terminal used by a technician, wherein the prompt information is used for prompting that the current load of the first video network node server exceeds a preset load.
In the application, a backup server is not required to be equipped for the node servers of the video network, the current load of a first node server of the plurality of node servers of the video network can be obtained in real time or periodically, then whether the current load exceeds a preset load or not is determined, the preset load is smaller than the rated load of the first node server of the video network, under the condition that the current load exceeds the preset load, part of monitoring resources managed by the first node server of the video network can be transferred to a second node server of the video network for management, so that the load of the first node server of the video network can be reduced, the first node server of the video network can continue to work normally after the first node server of the video network, a new request can be processed continuously, and the backup server is not required, so that the hardware cost can be reduced.
For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
The embodiment of the present invention also shows an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the processor implements the method for transferring monitoring resources based on the video network as shown in fig. 2.
An embodiment of the present invention also shows a computer-readable storage medium, on which a computer program is stored, where the computer program enables a processor to execute the method for transferring a monitoring resource based on a video network as shown in fig. 2.
The video networking is an important milestone for network development, is a real-time network, can realize high-definition video real-time transmission, and pushes a plurality of internet applications to high-definition video, and high-definition faces each other.
The video networking adopts a real-time high-definition video exchange technology, can integrate required services such as dozens of services of video, voice, pictures, characters, communication, data and the like on a system platform on a network platform, such as high-definition video conference, video monitoring, intelligent monitoring analysis, emergency command, digital broadcast television, delayed television, network teaching, live broadcast, VOD on demand, television mail, Personal Video Recorder (PVR), intranet (self-office) channels, intelligent video broadcast control, information distribution and the like, and realizes high-definition quality video broadcast through a television or a computer.
To better understand the embodiments of the present invention, the following description refers to the internet of view:
some of the technologies applied in the video networking are as follows:
network Technology (Network Technology)
Network technology innovation in video networking has improved the traditional Ethernet (Ethernet) to face the potentially huge first video traffic on the network. Unlike pure network Packet Switching (Packet Switching) or network Circuit Switching (Circuit Switching), the Packet Switching is adopted by the technology of the video networking to meet the Streaming requirement. The video networking technology has the advantages of flexibility, simplicity and low price of packet switching, and simultaneously has the quality and safety guarantee of circuit switching, thereby realizing the seamless connection of the whole network switching type virtual circuit and the data format.
Switching Technology (Switching Technology)
The video network adopts two advantages of asynchronism and packet switching of the Ethernet, eliminates the defects of the Ethernet on the premise of full compatibility, has end-to-end seamless connection of the whole network, is directly communicated with a user terminal, and directly bears an IP data packet. The user data does not require any format conversion across the entire network. The video networking is a higher-level form of the Ethernet, is a real-time exchange platform, can realize the real-time transmission of the whole-network large-scale high-definition video which cannot be realized by the existing Internet, and pushes a plurality of network video applications to high-definition and unification.
Server Technology (Server Technology)
The server technology on the video networking and unified video platform is different from the traditional server, the streaming media transmission of the video networking and unified video platform is established on the basis of connection orientation, the data processing capacity of the video networking and unified video platform is independent of flow and communication time, and a single network layer can contain signaling and data transmission. For voice and video services, the complexity of video networking and unified video platform streaming media processing is much simpler than that of data processing, and the efficiency is greatly improved by more than one hundred times compared with that of a traditional server.
Storage Technology (Storage Technology)
The super-high speed storage technology of the unified video platform adopts the most advanced real-time operating system in order to adapt to the media content with super-large capacity and super-large flow, the program information in the server instruction is mapped to the specific hard disk space, the media content is not passed through the server any more, and is directly sent to the user terminal instantly, and the general waiting time of the user is less than 0.2 second. The optimized sector distribution greatly reduces the mechanical motion of the magnetic head track seeking of the hard disk, the resource consumption only accounts for 20% of that of the IP internet of the same grade, but concurrent flow which is 3 times larger than that of the traditional hard disk array is generated, and the comprehensive efficiency is improved by more than 10 times.
Network Security Technology (Network Security Technology)
The structural design of the video network completely eliminates the network security problem troubling the internet structurally by the modes of independent service permission control each time, complete isolation of equipment and user data and the like, generally does not need antivirus programs and firewalls, avoids the attack of hackers and viruses, and provides a structural carefree security network for users.
Service Innovation Technology (Service Innovation Technology)
The unified video platform integrates services and transmission, and is not only automatically connected once whether a single user, a private network user or a network aggregate. The user terminal, the set-top box or the PC are directly connected to the unified video platform to obtain various multimedia video services in various forms. The unified video platform adopts a menu type configuration table mode to replace the traditional complex application programming, can realize complex application by using very few codes, and realizes infinite new service innovation.
Networking of the video network is as follows:
the video network is a centralized control network structure, and the network can be a tree network, a star network, a ring network and the like, but on the basis of the centralized control node, the whole network is controlled by the centralized control node in the network.
As shown in fig. 4, the video network is divided into an access network and a metropolitan network.
The devices of the access network part can be mainly classified into 3 types: node server, access switch, terminal (including various set-top boxes, coding boards, memories, etc.). The node server is connected to an access switch, which may be connected to a plurality of terminals and may be connected to an ethernet network.
The node server is a node which plays a centralized control function in the access network and can control the access switch and the terminal. The node server can be directly connected with the access switch or directly connected with the terminal.
Similarly, devices of the metropolitan network portion may also be classified into 3 types: a metropolitan area server, a node switch and a 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 a node server of the access network part, namely the node server belongs to both the access network part and the metropolitan area network part.
The metropolitan area server is a node which plays a centralized control function in the metropolitan area network and can control a node switch and a node server. The metropolitan area server can be directly connected with the node switch or directly connected with the node server.
Therefore, the whole video network is a network structure with layered centralized control, and the network controlled by the node server and the metropolitan area server can be in various structures such as tree, star and ring.
The access network part can form a unified video platform (the part in the dotted circle), and a plurality of unified video platforms can form a video network; each unified video platform may be interconnected via metropolitan area and wide area video networking.
Video networking device classification
1.1 devices in the video network of the embodiment of the present invention can be mainly classified into 3 types: server, exchanger (including Ethernet protocol conversion gateway), terminal (including various set-top boxes, code board, memory, etc.). The video network as a whole can be divided into a metropolitan area network (or national network, global network, etc.) and an access network.
1.2 wherein the devices of the access network part can be mainly classified into 3 types: node server, access exchanger (including Ethernet protocol conversion gateway), terminal (including various set-top boxes, coding board, memory, etc.).
The specific hardware structure of each access network device is as follows:
a node server:
as shown in fig. 5, the system mainly includes a network interface module 201, a switching engine module 202, a CPU module 203, and a disk array module 204;
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 the direction information of the packet; and stores the packet in a queue of the corresponding packet buffer 206 based on the packet's steering information; if the queue of the packet buffer 206 is nearly full, it is discarded; the switching engine module 202 polls all packet buffer queues for forwarding if the following conditions are met: 1) the port send buffer is not full; 2) the queue packet counter is greater than zero. The disk array module 204 mainly implements control over the hard disk, including initialization, read-write, and other operations on the hard disk; the CPU module 203 is mainly responsible for protocol processing with an access switch and a terminal (not shown in the figure), configuring an address table 205 (including a downlink protocol packet address table, an uplink protocol packet address table, and a data packet address table), and configuring the disk array module 204.
The access switch:
as shown in fig. 6, the network interface module (downlink network interface module 301, uplink network interface module 302), switching engine module 303 and CPU module 304 are mainly included;
wherein, the packet (uplink data) coming from the downlink network interface module 301 enters the packet detection module 305; the packet detection module 305 detects whether the Destination Address (DA), the Source Address (SA), the packet type, and the packet length of the packet meet the requirements, and if so, allocates a corresponding stream identifier (stream-id) and enters the switching engine module 303, otherwise, discards the stream identifier; the packet (downstream data) coming from the upstream network interface module 302 enters the switching engine module 303; the incoming data packet of the CPU module 304 enters the switching engine module 303; the switching engine module 303 performs an operation of looking up the address table 306 on the incoming packet, thereby obtaining the direction information of the packet; if the packet entering the switching engine module 303 is 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 the stream-id; if the queue of the packet buffer 307 is nearly full, it is discarded; if the packet entering the switching engine module 303 is not from the downlink network interface to the uplink network interface, the data packet is stored in the queue of the corresponding packet buffer 307 according to the guiding information of the packet; if the queue of the packet buffer 307 is nearly full, it is discarded.
The switching engine module 303 polls all packet buffer queues and may include two cases:
if the queue is from the downlink network interface to the uplink network interface, the following conditions are met for forwarding: 1) the port send buffer is not full; 2) the queued packet counter is greater than zero; 3) obtaining a token generated by a code rate control module;
if the queue is not from the downlink network interface to the uplink network interface, the following conditions are met for forwarding: 1) the port send buffer is not full; 2) the queue packet counter is greater than zero.
The rate control module 308 is configured by the CPU module 304, and generates tokens for packet buffer queues from all downstream network interfaces to upstream network interfaces 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 code rate control module 308.
Ethernet protocol conversion gateway：
As shown in fig. 7, the apparatus mainly includes a network interface module (a downlink network interface module 401 and an uplink 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 from the downlink network interface module 401 enters the packet detection module 405; the packet detection module 405 detects whether the ethernet MAC DA, the ethernet MAC SA, the ethernet length or frame type, the video network destination address DA, the video network source address SA, the video network packet type, and the packet length of the packet meet the requirements, and if so, allocates a corresponding stream identifier (stream-id); then, the MAC deletion module 410 subtracts MAC DA, MAC SA, length or frame type (2byte) and enters the corresponding receiving buffer, otherwise, discards it;
the downlink network interface module 401 detects the sending buffer of the port, and if there is a packet, obtains the ethernet MAC DA of the corresponding terminal according to the destination address DA of the packet, adds the ethernet MAC DA of the terminal, the MACSA of the ethernet coordination gateway, and the ethernet length or frame type, and sends the packet.
The other modules in the ethernet protocol gateway function similarly to the access switch.
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 and audio coding and 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 types: node server, node exchanger, 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. Video networking 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 the data packet (such as various protocol packets, multicast data packets, unicast data packets, etc.), there are 256 possibilities at most, the second byte to the sixth byte are metropolitan area network addresses, and the seventh byte and the eighth byte are access network addresses;
the Source Address (SA) is also composed of 8 bytes (byte), defined as the same as the Destination Address (DA);
the reserved byte consists of 2 bytes;
the payload part has different lengths according to different types of datagrams, and is 64 bytes if the datagram is various types of protocol packets, and is 32+1024 or 1056 bytes if the datagram is a unicast packet, of course, the length is not limited to the above 2 types;
the CRC consists of 4 bytes and is calculated in accordance with the standard ethernet CRC algorithm.
2.2 metropolitan area network packet definition
The topology of a metropolitan area network is a graph and there may be 2, or even more than 2, connections between two devices, i.e., there may be more than 2 connections between a node switch and a node server, a node switch and a node switch, and a node switch and a node server. However, the metro network address of the metro network device is unique, and in order to accurately describe the connection relationship between the metro network devices, parameters are introduced in the embodiment of the present invention: a label to uniquely describe a metropolitan area network device.
In this specification, the definition of the Label is similar to that of the Label of MPLS (Multi-Protocol Label Switch), and assuming that there are two connections between the device a and the device B, there are 2 labels for the packet from the device a to the device B, and 2 labels for the packet from the device B to the device a. The label is classified into an incoming label and an outgoing label, and assuming that the label (incoming label) of the packet entering the device a is 0x0000, the label (outgoing label) of the packet leaving the device a may become 0x 0001. The network access process of the metro network is a network access process under centralized control, that is, address allocation and label allocation of the metro network are both dominated by the metro server, and the node switch and the node server are both passively executed, which is different from label allocation of MPLS, and label allocation of MPLS is a result of mutual negotiation between the switch and the server.
As shown in the following table, the data packet of the metro network mainly includes the following parts:
| DA | SA | Reserved | label (R) | Payload | CRC |
Namely Destination Address (DA), Source Address (SA), Reserved byte (Reserved), tag, payload (pdu), CRC. The format of the tag may be defined by reference to the following: the tag is 32 bits with the upper 16 bits reserved and only the lower 16 bits used, and its position is between the reserved bytes and payload of the packet.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As will be appreciated by one skilled in the art, 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 present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) 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 flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams 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 to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, 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 terminal 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 terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal 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 of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be 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. Also, 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 an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The foregoing describes in detail a method and an apparatus for transferring monitoring resources based on a video network, and a specific example is applied in the description to explain the principle and the implementation of the present invention, and the description of the foregoing embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A method for transferring monitoring resources based on a video network is characterized in that the video network comprises a video network central server and a plurality of video network node servers, each video network node server respectively manages a plurality of video network monitoring resources, and the method comprises the following steps:
obtaining a current load of a first of the plurality of nodes of the video network;
determining whether the current load exceeds a preset load, wherein the preset load is smaller than the rated load of the first video networking node server;
and under the condition that the current load exceeds the preset load, transferring part of monitoring resources managed by the first video network node server to a second video network node server for management.
2. The method of claim 1, wherein obtaining a current load of a first of the plurality of nodes comprises:
at least obtaining the system resource utilization rate and/or the network resource utilization rate of the first video networking node server;
and acquiring the current load of the first video network node server at least according to the system resource utilization rate and/or the network resource utilization rate.
3. The method of claim 1, wherein said transferring the portion of the monitoring resources managed by the first apparent networking node server to a second apparent networking node server comprises:
determining, among the plurality of video networking node servers other than the first video networking node server, a video networking node server with a lowest load as a second video networking node server;
and transferring part of monitoring resources managed by the first video network node server to the second video network node server for management.
4. The method of claim 1, wherein said transferring the portion of the monitoring resources managed by the first apparent networking node server to a second apparent networking node server comprises:
acquiring at least part of virtual terminal numbers from a plurality of virtual terminal numbers in the first video network node server, wherein each virtual terminal number is used for managing at least one video network monitoring resource;
and for each acquired virtual terminal number, deleting the virtual terminal number and the resource identifier of the monitoring resource managed by the virtual terminal number from the first video network node server, and storing the virtual terminal number and the resource identifier of the monitoring resource managed by the virtual terminal number in the second video network node server.
5. The method of claim 1, further comprising:
restarting the first video networking node server.
6. The method of claim 1, further comprising:
and sending prompt information to a terminal used by a technician, wherein the prompt information is used for prompting that the current load of the first video network node server exceeds a preset load.
7. A transfer device of monitoring resources based on video network, wherein the video network comprises a video network central server and a plurality of video network node servers, each video network node server respectively manages a plurality of video network monitoring resources, the device comprises:
an obtaining module, configured to obtain a current load of a first video networking node server of the plurality of video networking node servers;
the determining module is used for determining whether the current load exceeds a preset load, wherein the preset load is smaller than the rated load of the first video network node server;
and the transfer module is used for transferring part of monitoring resources managed by the first video network node server to a second video network node server for management under the condition that the current load exceeds the preset load.
8. The apparatus of claim 7, wherein the obtaining module comprises:
a first obtaining unit, configured to obtain at least a system resource utilization rate and/or a network resource utilization rate of the first video networking node server;
and the second acquisition unit is used for acquiring the current load of the first video network node server at least according to the system resource utilization rate and/or the network resource utilization rate.
9. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor implements the method for transferring the monitoring resource based on the internet of view of any one of claims 1 to 6 when executing the computer program.
10. A computer-readable storage medium, characterized in that a computer program is stored thereon, which causes a processor to execute the method of transferring a monitoring resource based on a video network according to any of claims 1 to 6.
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