CN109257660B - Communication method and device based on video network - Google Patents
Communication method and device based on video network Download PDFInfo
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- H—ELECTRICITY
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- 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
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
- H04N21/6131—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via a mobile phone network
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
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- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/418—External card to be used in combination with the client device, e.g. for conditional access
- H04N21/4182—External card to be used in combination with the client device, e.g. for conditional access for identification purposes, e.g. storing user identification data, preferences, personal settings or data
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- H—ELECTRICITY
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
- H04N21/43637—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11]
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Abstract
The embodiment of the invention provides a communication method and a communication device based on a video network, wherein the method comprises the following steps: the video network terminal acquires signal intensity data of each wireless network unit in real time, determines a first target wireless network unit according to the signal intensity data, and communicates with the video network by using the first target wireless network unit; the video network terminal judges whether the first target wireless network unit meets a first condition and a second condition; if both are satisfied, the communication state of the first target wireless network unit is maintained; and if the first condition and/or the second condition are not met, determining a second target wireless network unit according to the signal intensity data, and communicating with the video network by using the second target wireless network unit. In the embodiment of the invention, by arranging two or more wireless network units, when the communication state of one wireless network unit cannot meet the actual requirement, the other wireless network unit is switched to communicate with the video network.
Description
Technical Field
The invention relates to the technical field of video networking, in particular to a communication method based on the video networking and a communication device based on the video networking.
Background
The video network is a special network for transmitting high-definition video and a special protocol at high speed based on Ethernet hardware, is a higher-level form of the Internet and is a real-time network.
At present, in the process of communicating with the video network, especially in the process of selecting wireless network equipment to communicate with the video network, the communication with the video network has the problems of disconnection, video data transmission blockage, data loss and the like due to the influences of conditions such as base station coverage, base station signal strength, terminal density in a base station, antenna matching of a terminal and the like.
Disclosure of Invention
In view of the above, embodiments of the present invention are proposed to provide a communication method based on the internet of view and a corresponding communication device based on the internet of view, which overcome or at least partially solve the above problems.
In order to solve the above problems, an embodiment of the present invention discloses a communication method based on a video network, where the method is applied to a video network, the video network includes a video network terminal, the video network terminal includes two or more wireless network units, and each wireless network unit is equipped with a subscriber identity card belonging to the same network service or different network services, and the method includes: the video networking terminal acquires signal intensity data of each wireless network unit in real time; the video network terminal determines a first target wireless network unit according to the signal intensity data of each wireless network unit and communicates with the video network by using the first target wireless network unit; the video network terminal judges whether the first target wireless network unit meets a preset first condition and a preset second condition in the process of communicating the first target wireless network unit with the video network; if the first target wireless network unit meets the first condition and the second condition, the video networking terminal keeps the communication state of the first target wireless network unit; and if the first target wireless network unit does not meet the first condition and/or the second condition, the video network terminal determines a second target wireless network unit according to the signal intensity data of each wireless network unit and communicates with the video network by using the second target wireless network unit.
Optionally, the determining, by the video network terminal, whether the first target wireless network unit meets a first condition and a second condition set in advance in a process of communicating between the first target wireless network unit and the video network includes: the video network terminal judges whether the signal intensity data of the first target wireless network unit is larger than or equal to a preset intensity threshold value in real time in the process of communicating the first target wireless network unit with the video network, acquires an echo request message of an Internet packet detector of the first target wireless network unit according to a preset period, and judges whether the first target wireless network unit is connected with the video network by using the echo request message.
Optionally, if the first target wireless network unit satisfies both the first condition and the second condition, the maintaining, by the video networking terminal, the communication state of the first target wireless network unit includes: if the signal intensity data of the first target wireless network unit is greater than or equal to the intensity threshold value and the first target wireless network unit is connected with the video network, the video network terminal keeps the communication state of the first target wireless network unit; if the first target wireless network unit does not meet the first condition and/or the second condition, the video network terminal determines a second target wireless network unit according to the signal intensity data of each wireless network unit, and communicates with the video network by using the second target wireless network unit: and if the signal intensity data of the first target wireless network unit is smaller than the intensity threshold value and/or the first target wireless network unit and the video network are interrupted, the video network terminal determines a second target wireless network unit according to the signal intensity data of each wireless network unit and communicates with the video network by using the second target wireless network unit.
Optionally, the acquiring, by the video networking terminal, signal strength data of each wireless network unit in real time includes: the video network terminal sends attention AT commands to the wireless network units in real time, and the wireless network units are used for returning respective signal intensity data to the video network terminal according to the respective received AT commands.
Optionally, the determining, by the video networking terminal, a first target wireless network unit according to the signal strength data of each wireless network unit includes: the video network terminal determines the wireless network unit with the maximum value of the signal intensity data in all the wireless network units as the first target wireless network unit; the video networking terminal determines a second target wireless network unit according to the signal intensity data of each wireless network unit: and the video network terminal determines the wireless network unit with the maximum value of the signal intensity data in the wireless network units except the first target wireless network unit in each wireless network unit as the second target wireless network unit.
The embodiment of the invention also discloses a communication device based on the video network, which is applied to the video network and comprises two or more wireless network units, wherein each wireless network unit is provided with a user identity identification card belonging to the same network service or different network services, and the device comprises: the acquisition module is used for acquiring the signal intensity data of each wireless network unit in real time; the first communication module is used for determining a first target wireless network unit according to the signal intensity data of each wireless network unit and communicating with the video network by using the first target wireless network unit; the judging module is used for judging whether the first target wireless network unit meets a preset first condition and a preset second condition in the process of communicating the first target wireless network unit with the video network; a maintaining module, configured to maintain a communication state of the first target wireless network unit if the first target wireless network unit satisfies the first condition and the second condition; and the second communication module is used for determining a second target wireless network unit according to the signal intensity data of each wireless network unit if the first target wireless network unit does not meet the first condition and/or the second condition, and communicating with the video network by using the second target wireless network unit.
Optionally, the determining module is configured to determine, in a process of communicating between the first target wireless network unit and the video network, whether signal strength data of the first target wireless network unit is greater than or equal to a preset strength threshold in real time, acquire an echo request message of an internet packet detector of the first target wireless network unit according to a preset period, and determine, by using the echo request message, whether the first target wireless network unit is connected to the video network.
Optionally, the maintaining module is configured to maintain the communication state of the first target wireless network unit if the signal strength data of the first target wireless network unit is greater than or equal to the strength threshold and the first target wireless network unit is connected to the video network; and the second communication module is used for determining a second target wireless network unit according to the signal intensity data of each wireless network unit and communicating with the video network by using the second target wireless network unit if the signal intensity data of the first target wireless network unit is smaller than the intensity threshold and/or the first target wireless network unit and the video network are interrupted.
Optionally, the obtaining module is configured to send an attention AT instruction to each wireless network unit in real time, and each wireless network unit is configured to return respective signal strength data to the video network terminal according to the received AT instruction.
Optionally, the first communication module is configured to determine, as the first target wireless network unit, a wireless network unit with a largest value of signal strength data among the wireless network units; the second communication module is configured to determine, as the second target wireless network unit, a wireless network unit with a largest value of signal strength data among wireless network units other than the first target wireless network unit.
The embodiment of the invention has the following advantages:
the embodiment of the invention is applied to the video network, and the video network can comprise a video network terminal, and the video network terminal is accessed into the video network so as to communicate with the video network. The video network terminal can comprise two or more wireless network units, and each wireless network unit can be provided with a user identification card belonging to the same network service or different network services. Each wireless network unit is connected to the video network by dialing through the respective user identification card.
In the embodiment of the invention, the video network terminal acquires the signal intensity data of each wireless network unit in real time, determines the first target wireless network unit according to the signal intensity data of each wireless network unit, and communicates with the video network by using the first target wireless network unit. The method comprises the steps that a video network terminal judges whether a first target wireless network unit meets a first condition and a second condition which are preset or not in the process that the first target wireless network unit communicates with a video network, if the first target wireless network unit meets the first condition and the second condition, the current communication state of the first target wireless network unit communicating with the video network meets the actual requirement, and the video network terminal keeps the communication state of the first target wireless network unit; if the first target wireless network unit does not meet the first condition and/or the second condition, the communication state of the first target wireless network unit currently communicating with the video network cannot meet the actual requirement, the video network terminal needs to determine a second target wireless network unit according to the signal intensity data of each wireless network unit, and the second target wireless network unit is used for communicating with the video network.
In the embodiment of the invention, the characteristics of the video network are applied, and in the process of communicating the first target wireless network unit with the video network, if the current communication state of the first target wireless network unit communicating with the video network meets the actual requirement, the communication state of the first target wireless network unit is kept; and if the current communication state of the first target wireless network unit for communicating with the video network cannot meet the actual requirement, selecting a second target wireless network unit from other wireless network units, and communicating with the video network by using the second wireless network unit. According to the embodiment of the invention, two or more wireless network units are arranged in the video network terminal, when the communication state of one wireless network unit can not meet the actual requirement, the other wireless network unit is switched to communicate with the video network, so that the problems of disconnection, video data transmission blockage, data loss and the like are avoided.
Drawings
FIG. 1 is a schematic networking diagram of a video network of the present invention;
FIG. 2 is a schematic diagram of a hardware architecture of a node server according to the present invention;
fig. 3 is a schematic diagram of a hardware structure of an access switch of the present invention;
fig. 4 is a schematic diagram of a hardware structure of an ethernet protocol conversion gateway according to the present invention;
FIG. 5 is a flowchart illustrating steps of an embodiment of a method for video-networking-based communication according to the present invention;
FIG. 6 is a diagram illustrating an exemplary operation of a method for compensating for a dropped reconnection when connecting an optical network via a 4G network according to the present invention;
fig. 7 is a block diagram of an embodiment of a communication device based on a video network 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.
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 over traditional Ethernet (Ethernet) to face the potentially enormous video traffic on the network. Unlike pure network Packet Switching (Packet Switching) or network Circuit Switching (Circuit Switching), the internet of vision technology employs network Packet Switching to satisfy the demand of Streaming (translated into Streaming, and continuous broadcasting, which is a data transmission technology, converting received data into a stable and continuous stream, and continuously transmitting the stream, so that the sound heard by the user or the image seen by the user is very smooth, and the user can start browsing on the screen before the whole data is transmitted). 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. 1, 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 (circled part), 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: servers, switches (including ethernet gateways), terminals (including various set-top boxes, code boards, memories, 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 servers, access switches (including ethernet gateways), terminals (including various set-top boxes, code boards, memories, etc.).
The specific hardware structure of each access network device is as follows:
a node server:
as shown in fig. 2, 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. 3, the network interface module (downstream network interface module 301, upstream network interface module 302), the switching engine module 303, and the 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, 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 data packet coming from the CPU module 204 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, which in this embodiment of the present invention is divided into 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) and obtaining the token generated by the 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 208 is configured by the CPU module 204, 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. 4, 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 video networking destination address DA of the packet, adds the ethernet MAC DA of the terminal, the MAC SA 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 3 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 |
the Destination Address (DA) is composed of 8 bytes (byte), the first byte represents the type of the data packet (e.g. various protocol packets, multicast data packets, unicast data packets, etc.), there are at most 256 possibilities, 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 types of different datagrams, and is 64 bytes if the type of the datagram is a variety of protocol packets, or is 1056 bytes if the type of the datagram is a unicast packet, but 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 a Label of Multi-Protocol Label switching (MPLS), and assuming that there are two connections between a device a and a device B, there are 2 labels for a packet from the device a to the device B, and 2 labels for a 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.
Based on the characteristics of the video network, one of the core concepts of the embodiment of the invention is provided, the video network terminal selects the wireless network unit with the best signal intensity to communicate with the video network under the condition that the video network terminal comprises two or more wireless network units, monitors the communication state of the wireless network unit in real time, and switches other wireless network units to communicate with the video network when the communication state cannot meet the actual requirement.
Referring to fig. 5, a flowchart illustrating steps of an embodiment of a communication method based on a video network according to the present invention is shown, where the method may be applied to a video network, the video network may include a video network terminal, the video network terminal includes two or more wireless network units, and each wireless network unit is equipped with a subscriber identity card belonging to the same network service or different network services, and the method may specifically include the following steps:
In the embodiment of the invention, the video networking terminal carries out initialization operation on each wireless network unit, and each wireless network unit after the initialization operation is in a networking waiting state, so that the video networking terminal can acquire the signal intensity data of each wireless network unit in real time.
In a preferred embodiment of the present invention, when the video network terminal acquires the signal strength data of each wireless network unit in real time, it may send an attention AT instruction to each wireless network unit in real time, where the AT instruction mainly functions in that each wireless network unit returns respective signal strength data to the video network terminal according to the received AT instruction. The AT command is a command for connection and communication. AT is Attention. Each AT command line can only contain one AT instruction; for the transmission of the AT command, a length of 1056 characters (including the last null character) can be received AT the maximum, except for two characters of the AT. The signal strength data may include specific values indicative of the strength of the signal of the wireless network element, in general, a higher value indicates a stronger signal and a lower value indicates a weaker signal, and the specific values in the signal strength data may be within a suitable range of values.
In the embodiment of the invention, the video network terminal selects an optimal wireless network unit among a plurality of wireless network units and utilizes the selected wireless network unit to communicate with the video network. In practical application, the video networking terminal may determine, as the first target wireless network unit, the wireless network unit with the largest value of the signal strength data among the wireless network units, that is, the wireless network unit with the largest value of the signal strength data is the best wireless network unit.
In the embodiment of the invention, two conditions are preset in the video networking terminal, wherein the two conditions are a first condition and a second condition respectively, and the two conditions are used for judging whether the communication state of the first target wireless network unit is suitable for actual needs. The first condition may be whether the signal strength data of the first target wireless network unit is greater than or equal to a preset strength threshold. The second condition may be whether the first target wireless network element has access to the video network.
In a preferred embodiment of the present invention, when the video network terminal determines whether the first target wireless network unit satisfies the preset first condition and the preset second condition in the process of the first target wireless network unit communicating with the video network, the video network terminal may determine whether the signal strength data of the first target wireless network unit is greater than or equal to the preset strength threshold in real time, acquire an echo request message of the internet packet detector of the first target wireless network unit according to a preset period, and determine whether the first target wireless network unit is connected with the video network by using the echo request message. For example, the video network terminal Z includes wireless network units w1 and w2, the wireless network unit w1 is a first target wireless network unit, the video network terminal Z acquires the signal intensity data q1 of the wireless network unit w1 in real time, the video network terminal Z acquires the signal intensity data q2 of the wireless network unit w2 in real time, and the preset intensity threshold is qy. The terminal Z of the internet of vision judges the magnitude relation between the signal strength data q1 and the strength threshold qy. The preset period is 1 minute, the video network terminal Z sends a ping instruction to the video network by using the wireless network unit w1 every 1 minute, returns an echo request message, and judges whether the wireless network unit w1 can access the video network according to the echo request message. It should be noted that, for the above situation that whether the wireless network unit w1 can access the internet of view is determined according to the echo request message, specifically, whether the wireless network unit w1 can access the internet of view can be determined according to the data amount and the delay information of the data packet carried in the echo request message, and the like.
In step 504, the video networking terminal maintains the communication status of the first target wireless network unit.
In the embodiment of the present invention, when the first target wireless network unit satisfies the first condition and the second condition at the same time, that is, when the signal strength data of the first target wireless network unit is greater than or equal to the strength threshold and the first target wireless network unit is connected to the video network, the video network terminal still communicates with the video network by using the first target wireless network unit.
And 505, the video network terminal determines a second target wireless network unit according to the signal intensity data of each wireless network unit, and communicates with the video network by using the second target wireless network unit.
In the embodiment of the present invention, when the first target wireless network unit does not satisfy the first condition and/or the second condition, that is, when the signal intensity data of the first target wireless network unit is smaller than the intensity threshold, or the first target wireless network unit and the video network are interrupted, or when the signal intensity data of the first target wireless network unit is smaller than the intensity threshold and the first target wireless network unit and the video network are interrupted, the video network terminal may abandon the communication between the first target wireless network unit and the video network, and further select another wireless network unit to communicate with the video network.
In a preferred embodiment of the present invention, when the video networking terminal determines the second target wireless network unit according to the signal strength data of each wireless network unit, the wireless network unit with the largest value of the signal strength data may be selected as the second target wireless network unit from the wireless network units except the first target wireless network unit. That is, the second target wireless network element is two different wireless network elements than the first target wireless network element.
Based on the above description about the embodiment of the communication method based on the video network, a method for compensating disconnection reconnection when the video network is connected through the 4G network is introduced below, as shown in fig. 6, in the method, the video network can be connected through a communication terminal adopting two 4G wireless network units, each 4G wireless network unit can support multiple network services, such as network services of two systems of TD-LTE and FDD-LTE, and a blind area of a mobile signal is reduced. After the communication terminal is initialized, each 4G wireless network unit initializes the dial-up function thereof. And monitoring the signal intensity data of each 4G wireless network unit in real time, selecting the 4G wireless network unit with the best signal to dial up and surf the internet, and further connecting the video network. In the process that the communication terminal is connected with the video network, the signal intensity data of the 4G wireless network unit which is connected with the video network at present is still monitored, whether the signal intensity data is in the range of guaranteeing smooth transmission of the video data is judged, if the smooth transmission of the video data cannot be guaranteed, another 4G wireless network unit is switched to dial up to the network, and then the video network is connected; and if the smooth transmission of the video data can be ensured, keeping the networking state of the 4G wireless network unit connected with the video network at present. Whether the signal intensity data are in the range of ensuring smooth transmission of the video data or not is judged, and meanwhile, whether the 4G wireless network unit connected with the video network at present can be connected with the video network or not can be monitored, and if the video network can be connected, the networking state of the 4G wireless network unit connected with the video network at present is kept; if the video network cannot be connected, another 4G wireless network unit is switched to dial up to the Internet, and then the video network is connected.
The embodiment of the invention is applied to the video network, and the video network can comprise a video network terminal, and the video network terminal is accessed into the video network so as to communicate with the video network. The video network terminal can comprise two or more wireless network units, and each wireless network unit can be provided with a user identification card belonging to the same network service or different network services. Each wireless network unit is connected to the video network by dialing through the respective user identification card.
In the embodiment of the invention, the video network terminal acquires the signal intensity data of each wireless network unit in real time, determines the first target wireless network unit according to the signal intensity data of each wireless network unit, and communicates with the video network by using the first target wireless network unit. The method comprises the steps that a video network terminal judges whether a first target wireless network unit meets a first condition and a second condition which are preset or not in the process that the first target wireless network unit communicates with a video network, if the first target wireless network unit meets the first condition and the second condition, the current communication state of the first target wireless network unit communicating with the video network meets the actual requirement, and the video network terminal keeps the communication state of the first target wireless network unit; if the first target wireless network unit does not meet the first condition and/or the second condition, the communication state of the first target wireless network unit currently communicating with the video network cannot meet the actual requirement, the video network terminal needs to determine a second target wireless network unit according to the signal intensity data of each wireless network unit, and the second target wireless network unit is used for communicating with the video network.
In the embodiment of the invention, the characteristics of the video network are applied, and in the process of communicating the first target wireless network unit with the video network, if the current communication state of the first target wireless network unit communicating with the video network meets the actual requirement, the communication state of the first target wireless network unit is kept; and if the current communication state of the first target wireless network unit for communicating with the video network cannot meet the actual requirement, selecting a second target wireless network unit from other wireless network units, and communicating with the video network by using the second wireless network unit. According to the embodiment of the invention, two or more wireless network units are arranged in the video network terminal, when the communication state of one wireless network unit can not meet the actual requirement, the other wireless network unit is switched to communicate with the video network, so that the problems of disconnection, video data transmission blockage, data loss and the like are avoided.
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. 7, a block diagram of an embodiment of a communication device based on a video network according to the present invention is shown, where the communication device may be applied to a video network, the device may include two or more wireless network units, and each wireless network unit is equipped with a subscriber identity card belonging to the same network service or a different network service, and the device may specifically include the following modules:
an obtaining module 701, configured to obtain signal strength data of each wireless network unit in real time.
The first communication module 702 is configured to determine a first target wireless network unit according to the signal strength data of each wireless network unit, and communicate with the video network by using the first target wireless network unit.
The determining module 703 is configured to determine whether the first target wireless network unit meets a preset first condition and a preset second condition in a process of communicating with the video network.
A maintaining module 704, configured to maintain the communication status of the first target wireless network unit if the first target wireless network unit satisfies the first condition and the second condition.
The second communication module 705 is configured to determine a second target wireless network unit according to the signal strength data of each wireless network unit if the first target wireless network unit does not satisfy the first condition and/or the second condition, and communicate with the video network by using the second target wireless network unit.
In a preferred embodiment of the present invention, the determining module 703 is configured to determine whether the signal strength data of the first target wireless network unit is greater than or equal to a preset strength threshold in real time during the communication between the first target wireless network unit and the video network, acquire an echo request message of an internet packet detector of the first target wireless network unit according to a preset period, and determine whether the first target wireless network unit is connected to the video network by using the echo request message.
In a preferred embodiment of the present invention, the maintaining module 704 is configured to maintain the communication status of the first target wireless network unit if the signal strength data of the first target wireless network unit is greater than or equal to the strength threshold and the first target wireless network unit is connected to the video network; the second communication module 705 is configured to determine a second target wireless network unit according to the signal strength data of each wireless network unit and communicate with the video network by using the second target wireless network unit if the signal strength data of the first target wireless network unit is smaller than the strength threshold and/or the first target wireless network unit and the video network are interrupted.
In a preferred embodiment of the present invention, the obtaining module 701 is configured to send an attention AT instruction to each wireless network unit in real time, and each wireless network unit is configured to return respective signal strength data to the video network terminal according to the respective received AT instruction.
In a preferred embodiment of the present invention, the first communication module 702 is configured to determine a wireless network unit with the largest value of the signal strength data among the wireless network units as a first target wireless network unit; the second communication module 705 is configured to determine a wireless network unit with the largest value of the signal strength data among wireless network units other than the first target wireless network unit as a second target wireless network unit.
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 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 communication method based on the video network and the communication device based on the video network provided by the invention are described in detail, and the principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the 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 (8)
1. A communication method based on video network is characterized in that the method is applied to the video network, the video network comprises a video network terminal, the video network terminal comprises two or more wireless network units, and each wireless network unit is provided with a user identity identification card belonging to the same network service or different network services, the method comprises the following steps:
the video networking terminal acquires signal intensity data of each wireless network unit in real time;
the video network terminal determines a first target wireless network unit according to the signal intensity data of each wireless network unit and communicates with the video network by using the first target wireless network unit;
the video network terminal judges whether the first target wireless network unit meets a preset first condition and a preset second condition in the process of communicating the first target wireless network unit with the video network;
if the first target wireless network unit meets the first condition and the second condition, the video networking terminal keeps the communication state of the first target wireless network unit;
if the first target wireless network unit does not meet the first condition and/or the second condition, the video network terminal determines a second target wireless network unit according to the signal intensity data of each wireless network unit and communicates with the video network by using the second target wireless network unit;
the video network terminal judges whether the first target wireless network unit meets a first condition and a second condition which are preset in the process of communicating the first target wireless network unit with the video network, and the judgment comprises the following steps:
the video network terminal judges whether the signal intensity data of the first target wireless network unit is larger than or equal to a preset intensity threshold value in real time in the process of communicating the first target wireless network unit with the video network, acquires an echo request message of an Internet packet detector of the first target wireless network unit according to a preset period, and judges whether the first target wireless network unit is connected with the video network by using the echo request message.
2. The communication method based on the video network as claimed in claim 1, wherein:
if the first target wireless network unit meets the first condition and the second condition, the video networking terminal maintains the communication state of the first target wireless network unit, and the method comprises the following steps:
if the signal intensity data of the first target wireless network unit is greater than or equal to the intensity threshold value and the first target wireless network unit is connected with the video network, the video network terminal keeps the communication state of the first target wireless network unit;
if the first target wireless network unit does not meet the first condition and/or the second condition, the video network terminal determines a second target wireless network unit according to the signal intensity data of each wireless network unit, and communicates with the video network by using the second target wireless network unit:
and if the signal intensity data of the first target wireless network unit is smaller than the intensity threshold value and/or the first target wireless network unit and the video network are interrupted, the video network terminal determines a second target wireless network unit according to the signal intensity data of each wireless network unit and communicates with the video network by using the second target wireless network unit.
3. The communication method based on the video network as claimed in claim 1, wherein the video network terminal obtains the signal strength data of each wireless network unit in real time, comprising:
the video network terminal sends attention AT commands to the wireless network units in real time, and the wireless network units are used for returning respective signal intensity data to the video network terminal according to the respective received AT commands.
4. The communication method based on the video network according to any one of claims 1 to 3, wherein:
the video network terminal determines a first target wireless network unit according to the signal intensity data of each wireless network unit, and the method comprises the following steps:
the video network terminal determines the wireless network unit with the maximum value of the signal intensity data in all the wireless network units as the first target wireless network unit;
the video networking terminal determines a second target wireless network unit according to the signal intensity data of each wireless network unit:
and the video network terminal determines the wireless network unit with the maximum value of the signal intensity data in the wireless network units except the first target wireless network unit in each wireless network unit as the second target wireless network unit.
5. A communication device based on video network is characterized in that the device is applied to the video network, the device comprises two or more wireless network units, and each wireless network unit is provided with a user identity identification card belonging to the same network service or different network services, the device comprises:
the acquisition module is used for acquiring the signal intensity data of each wireless network unit in real time;
the first communication module is used for determining a first target wireless network unit according to the signal intensity data of each wireless network unit and communicating with the video network by using the first target wireless network unit;
the judging module is used for judging whether the first target wireless network unit meets a preset first condition and a preset second condition in the process of communicating the first target wireless network unit with the video network;
a maintaining module, configured to maintain a communication state of the first target wireless network unit if the first target wireless network unit satisfies the first condition and the second condition;
the second communication module is used for determining a second target wireless network unit according to the signal intensity data of each wireless network unit if the first target wireless network unit does not meet the first condition and/or the second condition, and communicating with the video network by using the second target wireless network unit;
the judging module is configured to judge whether signal intensity data of the first target wireless network unit is greater than or equal to a preset intensity threshold in real time in a process of communicating the first target wireless network unit with the video network, acquire an echo request message of an internet packet detector of the first target wireless network unit according to a preset period, and judge whether the first target wireless network unit is connected with the video network by using the echo request message.
6. The video-networking-based communication device of claim 5, wherein:
the holding module is used for holding the communication state of the first target wireless network unit if the signal intensity data of the first target wireless network unit is greater than or equal to the intensity threshold value and the first target wireless network unit is connected with the video network;
and the second communication module is used for determining a second target wireless network unit according to the signal intensity data of each wireless network unit and communicating with the video network by using the second target wireless network unit if the signal intensity data of the first target wireless network unit is smaller than the intensity threshold and/or the first target wireless network unit and the video network are interrupted.
7. The device according to claim 5, wherein the obtaining module is configured to send an attention AT command to each of the wireless network units in real time, and each of the wireless network units is configured to return respective signal strength data to the video networking terminal according to the respective received AT command.
8. The internet-of-view based communication device of any one of claims 5-7, wherein:
the first communication module is configured to determine, as the first target wireless network unit, a wireless network unit with a largest signal strength data value among the wireless network units;
the second communication module is configured to determine, as the second target wireless network unit, a wireless network unit with a largest value of signal strength data among wireless network units other than the first target wireless network unit.
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