CN117692984A - Link selection method, device, terminal equipment and storage medium - Google Patents

Abstract

This application discloses a link selection method, device, terminal equipment and storage medium, relating to the field of network communication technology. The method includes: calculating the respective network quality parameters of each access link according to the respective network quality parameters of each access link. Network quality value; sort the network quality values in order from large to small, use the access link corresponding to the first network quality value ranked first as the main link, and use the access link other than the main link Other access links are used as slave links; the first network quality value is compared with the last first network quality value to obtain a comparison result; based on the comparison result and the number of links currently accessing the external network, the slave link is Select a target slave link to access an external network from the slave links, and connect the target slave link and the main link to the external network. Adopting the technical solution of the present application can improve the network communication quality of network services provided by multiple WAN communication devices.

Description

Link selection method, device, terminal equipment and storage medium

Technical field

The present application relates to the field of network communication technology, and in particular to a link selection method, device, terminal equipment and storage medium.

Background technique

With the popularity of the Internet, in order to meet users' needs for high-bandwidth and low-latency electronic devices such as 4K TVs and virtual reality, and to provide a network foundation for users' diversified audio-visual lives, network communication equipment also communicates from a single WAN (Wide Area Network) Equipment is gradually transforming into multi-WAN communication equipment.

Currently, multi-WAN communication equipment on the market usually performs link selection by detecting the continuity of the current Internet WAN link. That is, one main link is used to provide network services to users, and other links are idle. When the current main link is in When the Internet is unavailable, it switches to other links to provide network services to users. However, with this link selection method, when the network communication quality of the main link is poor, the main link is still used to access the Internet, and other links are in an idle state. Automatic link switching cannot be realized. The link of the device Low utilization rate results in poor network communication quality.

In summary, how to improve the network communication quality of network services provided by multiple WAN communication devices has become an urgent technical issue in this field that needs to be solved.

Contents of the invention

The main purpose of this application is to provide a link selection method, device, terminal equipment and storage medium, aiming to improve the network communication quality of network services provided by multi-WAN communication equipment.

To achieve the above objectives, this application provides a link selection method, which includes:

Calculate the respective network quality value of each access link according to the respective network quality parameters of each access link;

Sort the network quality values in order from large to small, use the access link corresponding to the first network quality value ranked first as the main link, and use other access links except the main link. road as a slave link;

Compare the first network quality value with the last first network quality value to obtain a comparison result;

According to the comparison result and the number of links currently connected to the external network, select a target slave link to access the external network from the slave links, and connect the target slave link and the main link External network.

Optionally, the method also includes:

Monitor link access status in real time, and determine the number of access links based on the link access status;

If the number of the access links is greater than one, then perform the steps of calculating the network quality value of each access link according to the network quality parameter of each access link and subsequent steps;

If the number of the access links is equal to one, the access links are connected to the external network.

Optionally, the step of calculating the network quality value of each access link according to the network quality parameter of each access link includes:

Periodically obtain network quality parameters of each access link according to a preset detection frequency, where the network quality parameters include delay, packet loss rate and throughput;

For each access link, the delay, the packet loss rate and the throughput corresponding to the access link are weighted and calculated according to their respective weights to obtain the corresponding network quality value.

Optionally, before the step of periodically obtaining network quality parameters of each access link according to a preset detection frequency, the method further includes:

Monitor user configuration data in real time, where the user configuration data includes detection frequency, priority of delay, priority of packet loss rate, and priority of throughput;

The respective weights of the delay, the packet loss rate and the throughput are determined according to the priority of the delay, the priority of the packet loss rate and the priority of the throughput.

Optionally, the step of selecting a target secondary link to access the external network from the secondary links based on the comparison result and the number of links currently accessing the external network includes:

Determine the number of links currently connected to the external network;

If the number of links is one and the comparison result is that the first network quality value is greater than or equal to the last first network quality value, select a target slave link to access the external network from the slave links. The number of roads is zero;

If the number of links is one and the comparison result is that the first network quality value is less than the last first network quality value, then calculate the first network quality value and the last first network quality value. and select a target slave link to access the external network from the slave links based on the ratio and the network quality value of the slave link.

Optionally, after the step of determining the number of links currently accessing the external network, the method further includes:

If the number of links is greater than one, obtain the respective load percentages of the historical primary link and the historical secondary link currently connected to the external network, and compare the network quality value of the secondary link with the network quality value of the historical secondary link. Compare the quality values to obtain the second comparison result;

If the comparison result is that the first network quality value is equal to the last first network quality value, then according to the second comparison result, select a target slave link to access the external network from the slave links;

If the comparison result is that the first network quality value is greater than or less than the last first network quality value, then the ratio between the first network quality value and the last first network quality value is calculated, and based on The ratio, the load percentage and the second comparison result are used to select a target secondary link for accessing the external network from the secondary links.

Optionally, after the step of sorting the network quality values from large to small, the method further includes:

Update the routing table according to the sorting of the network quality value, so that each access link in the routing table is arranged according to the sorting of the network quality value;

Routing is selected based on the updated routing table.

In addition, to achieve the above object, this application also provides a link selection device, the link selection device includes:

A calculation module configured to calculate the respective network quality values of each access link based on the respective network quality parameters of each access link;

A sorting module, configured to sort the network quality values in order from large to small, use the access link corresponding to the first network quality value ranked first as the main link, and use the access link other than the main link Other access links serve as slave links;

A comparison module, used to compare the first network quality value with the last first network quality value to obtain a comparison result;

A link selection module, configured to select a target slave link that accesses the external network from the slave links based on the comparison result and the number of links currently connected to the external network, and combine the target slave link and The main link is connected to an external network.

Wherein, each functional module of the link selection device of the present application implements the steps of the link selection method as described above during operation.

In addition, to achieve the above object, the present application also provides a terminal device, which includes: a memory, a processor, and a link selection program stored on the memory and executable on the processor. When the link selection program is executed by the processor, the steps of the link selection method as described above are implemented.

In addition, in order to achieve the above object, this application also proposes a storage medium. The storage medium is a computer-readable storage medium. A link selection program is stored on the storage medium. When the link selection program is executed by a processor, Steps to implement the link selection method as described above.

This application provides a link selection method, device, terminal equipment and storage medium, wherein the link selection method includes: calculating the respective network quality parameters of each access link according to the respective network quality parameters of each access link. Quality value: Sort the network quality values in order from large to small, use the access link corresponding to the first network quality value ranked first as the main link, and use other links except the main link. The access link is used as a slave link; the first network quality value is compared with the last first network quality value to obtain a comparison result; based on the comparison result and the number of links currently accessing the external network, the slave link is Select a target slave link to access the external network from the slave links, and connect the target slave link and the main link to the external network.

In this way, this application selects the main link for connecting to the external network based on the network quality of each access link of the multi-WAN communication device to achieve automatic link switching, and based on the quality of the main link during actual use Evaluate and select to add slave links based on status changes before and after to optimize network communication quality, which not only ensures the comprehensiveness of the overall network quality, but also takes into account the flexibility of network switching, thus improving the network services provided by multiple WAN communication devices. network communication quality.

Description of the drawings

Figure 1 is a schematic diagram of the equipment structure of the terminal equipment hardware operating environment involved in the embodiment of the present application;

Figure 2 is a schematic diagram of an implementation flow of an embodiment of the link selection method of the present application;

Figure 3 is a schematic structural diagram of a communication device involved in an embodiment of the link selection method of the present application;

Figure 4 is a schematic diagram of the routing implementation process involved in one embodiment of the link selection method of this application;

Figure 5 is a schematic diagram of functional modules of an embodiment of the link selection device of the present application.

The realization of the purpose, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings.

Detailed ways

It should be understood that the specific embodiments described here are only used to explain the present application and are not used to limit the present application.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of this application are only used to explain the relationship between components in a specific posture (as shown in the drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.

In this application, unless otherwise clearly stated and limited, the terms "connection", "fixing", etc. should be understood in a broad sense. For example, "fixing" can be a fixed connection, a detachable connection, or an integral body; it can It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interactive relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

In addition, descriptions such as "first", "second", etc. in this application are for descriptive purposes only and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the technical solutions in various embodiments can be combined with each other, but it must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that such a combination of technical solutions does not exist. , nor is it within the scope of protection required by this application.

An embodiment of the present application provides a terminal device.

It should be noted that the terminal device in this embodiment of the present application may be a network communication device such as a switch, router, gateway or CPE with multiple WAN ports.

As shown in Figure 1, Figure 1 is a schematic diagram of the equipment structure of the terminal equipment hardware operating environment involved in the embodiment of the present application. In the hardware running environment of the terminal device, the terminal device may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, and a communication bus 1002. Among them, the communication bus 1002 is used to realize connection communication between these components. The user interface 1003 may include a display screen (Display) and an input unit such as a keyboard (Keyboard). The optional user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a WI-FI interface). The memory 1005 may be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. The memory 1005 may optionally be a storage device independent of the aforementioned processor 1001.

Those skilled in the art can understand that the structure of the terminal device shown in Figure 1 does not constitute a limitation of the device, and may include more or fewer components than shown in the figure, or combine certain components, or arrange different components.

As shown in Figure 1, memory 1005, which is a computer storage medium, may include an operating system, a network communication module, a user interface module and a link selection program.

In the device shown in Figure 1, the network interface 1004 is mainly used to connect to the backend server and communicate with the backend server; the user interface 1003 is mainly used to connect to the client (user) and communicate with the client; and the processor 1001 may be used to call the link selection program stored in memory 1005 and perform the following operations:

Calculate the respective network quality value of each access link according to the respective network quality parameters of each access link;

Sort the network quality values in order from large to small, use the access link corresponding to the first network quality value ranked first as the main link, and use other access links except the main link. road as a slave link;

Compare the first network quality value with the last first network quality value to obtain a comparison result;

According to the comparison result and the number of links currently connected to the external network, select a target slave link to access the external network from the slave links, and connect the target slave link and the main link External network.

Optionally, the processor 1001 can also be used to call the link selection program stored in the memory 1005, and perform the following operations:

Monitor link access status in real time, and determine the number of access links based on the link access status;

If the number of the access links is greater than one, then perform the steps of calculating the network quality value of each access link according to the network quality parameter of each access link and subsequent steps;

If the number of the access links is equal to one, the access links are connected to the external network.

Optionally, the processor 1001 can also be used to call the link selection program stored in the memory 1005, and perform the following operations:

Periodically obtain network quality parameters of each access link according to a preset detection frequency, where the network quality parameters include delay, packet loss rate and throughput;

For each access link, the delay, the packet loss rate and the throughput corresponding to the access link are weighted and calculated according to their respective weights to obtain the corresponding network quality value.

Optionally, the processor 1001 can also be used to call the link selection program stored in the memory 1005, and perform the following operations:

Monitor user configuration data in real time, where the user configuration data includes detection frequency, priority of delay, priority of packet loss rate, and priority of throughput;

The respective weights of the delay, the packet loss rate and the throughput are determined according to the priority of the delay, the priority of the packet loss rate and the priority of the throughput.

Optionally, the processor 1001 can also be used to call the link selection program stored in the memory 1005, and perform the following operations:

Determine the number of links currently connected to the external network;

If the number of links is one and the comparison result is that the first network quality value is greater than or equal to the last first network quality value, select a target slave link to access the external network from the slave links. The number of roads is zero;

If the number of links is one and the comparison result is that the first network quality value is less than the last first network quality value, then calculate the first network quality value and the last first network quality value. and select a target slave link to access the external network from the slave links based on the ratio and the network quality value of the slave link.

Optionally, the processor 1001 can also be used to call the link selection program stored in the memory 1005, and perform the following operations:

If the number of links is greater than one, obtain the respective load percentages of the historical primary link and the historical secondary link currently connected to the external network, and compare the network quality value of the secondary link with the network quality value of the historical secondary link. Compare the quality values to obtain the second comparison result;

If the comparison result is that the first network quality value is equal to the last first network quality value, then according to the second comparison result, select a target slave link to access the external network from the slave links;

If the comparison result is that the first network quality value is greater than or less than the last first network quality value, then the ratio between the first network quality value and the last first network quality value is calculated, and based on The ratio, the load percentage and the second comparison result are used to select a target secondary link for accessing the external network from the secondary links.

Optionally, the processor 1001 can also be used to call the link selection program stored in the memory 1005, and perform the following operations:

Update the routing table according to the sorting of the network quality value, so that each access link in the routing table is arranged according to the sorting of the network quality value;

Routing is selected based on the updated routing table.

Based on the above hardware structure, the overall concept of each embodiment of the link selection method of the present application is proposed.

In the embodiment of this application, with the popularization of the network, in order to meet users' needs for high-bandwidth and low-latency electronic devices such as 4K TVs and virtual reality, and to provide a network foundation for users' diversified audio-visual lives, network communication equipment has also evolved from a single WAN communication equipment is gradually transforming into multi-WAN communication equipment.

Currently, multi-WAN communication equipment on the market usually performs link selection by detecting the continuity of the current Internet WAN link. That is, one main link is used to provide network services to users, and other links are idle. When the current main link is in When the Internet is unavailable, it switches to other links to provide network services to users. However, with this link selection method, when the network communication quality of the main link is poor, the main link is still used to access the Internet, and other links are in an idle state. Automatic link switching cannot be realized. The link of the device Low utilization rate results in poor network communication quality.

In summary, how to improve the network communication quality of network services provided by multiple WAN communication devices has become an urgent technical issue in this field that needs to be solved.

In response to the above problems, an embodiment of the present application proposes a link selection method. The link selection method includes: calculating the network quality value of each access link according to the network quality parameter of each access link; The network quality values are sorted from large to small, and the access link corresponding to the first network quality value ranked first is used as the main link, and other access links except the main link are As a slave link; compare the first network quality value with the last first network quality value to obtain a comparison result; according to the comparison result and the number of links currently connected to the external network, from the slave link Select a target secondary link to access the external network, and connect the target secondary link and the primary link to the external network.

In this way, this application selects the main link for connecting to the external network based on the network quality of each access link of the multi-WAN communication device to achieve automatic link switching, and based on the quality of the main link during actual use Evaluate and select to add slave links based on status changes before and after to optimize network communication quality, which not only ensures the comprehensiveness of the overall network quality, but also takes into account the flexibility of network switching, thus improving the network services provided by multiple WAN communication devices. network communication quality.

Based on the above overall concept of the link selection method of the present application, various embodiments of the link selection method of the present application are proposed.

Please refer to Figure 2, which is a schematic flow chart of the first embodiment of the link selection method of the present application. It should be noted that although a logical sequence is shown in the flowcharts, in some cases the steps shown or described may be performed in a sequence different from that herein.

In this embodiment, in order to facilitate understanding and explanation, the multi-WAN communication device is used as the direct execution subject in this embodiment, hereinafter referred to as the communication device, to explain the link selection method of this application.

As shown in Figure 2, in this embodiment, the link selection method of this application may include:

Step S10: Calculate the respective network quality values of each access link according to the respective network quality parameters of each access link;

It should be noted that in this embodiment, the communication device includes multiple WAN ports, and the WAN ports are used to connect to an external ISP (Internet Service Provider) network, such as ADSL (Asymmetric Digital Subscriber Line). Symmetrical Digital Subscriber Line), DDN (Digital Data Network), Ethernet and other access lines. The access link refers to the WAN port link that has opened network services. The access link can be connected to the external network To provide network services to users, it can also be temporarily not connected to the external network, and can only be idle as a backup for the link connected to the external network.

In this embodiment, the communication device obtains the network quality parameters of the respective access links of each WAN interface, and calculates the respective network quality values of each access link based on the network quality parameters.

It should be noted that in this embodiment, the network quality parameters of the link may include network quality parameters such as link delay, packet loss, and throughput. The network quality value is the value of the communication device based on the network quality parameters of each link. value, the calculated quality score of each link. The scoring system of the network quality value can be percent, ten points, percentage, etc. The specific scoring system is not limited in this embodiment and can be set according to the actual scenario. .

Step S20: Sort the network quality values in order from large to small, use the access link corresponding to the first network quality value ranked first as the main link, and use other links except the main link. The access link serves as the slave link;

In this embodiment, the communication device arranges the calculated network quality values in order from large to small, and uses the access link corresponding to the first network quality value ranked first as the main link. Other access links outside the network are used as slave links, that is, the access link with the largest network quality value and the best network quality is used as the master link, and other access links are used as slave links. Network quality selects the main link to the external network to effectively improve the network quality of network services provided by communication equipment.

Step S30: Compare the first network quality value with the last first network quality value to obtain a comparison result;

In this embodiment, after the communication device determines the main link with the best network quality based on the network quality value of each access link, the communication device compares the first network quality value of the main link with the last first network quality value. Compare the sizes to obtain the size comparison results of the two values. The last first network quality value refers to the network quality value of the main link determined by the communication device based on the network quality parameters of each access link last time, that is, The network quality value of the main link currently connected to the external network.

Step S40: According to the comparison result and the number of links currently connected to the external network, select a target slave link that accesses the external network from the slave links, and combine the target slave link and the main link access the external network.

In this embodiment, the communication device selects a target slave link to access the external network from the slave links based on the comparison result between the first network quality value and the historical first network value and the number of links currently connected to the external network. , specifically select the number of target slave links to access the external network, and determine the business load percentage of the target slave link and the business load percentage of the main link. After determining the number of links and the business load percentage, add the target slave link The main link and the main link are connected to the external network, and network services are provided to users through the main link and target slave links, increasing bandwidth and improving network service quality.

It should be noted that in this embodiment, when selecting the target slave link to access the external network, the selection is made according to the network quality value of each slave link from high to low to ensure that the quality of the accessed network is the best.

Further, in a feasible embodiment, the link selection method of this application may also include:

Step A10: Monitor the link access status in real time, and determine the number of access links based on the link access status;

In this embodiment, after the communication device is turned on, it monitors the WAN link access status of each WAN port of its own WAN port in real time through its own WAN link monitoring module. The link access status can be divided into WAN link access and disconnection. Turn on, and count the number of accessed WAN links based on the monitored link access status. If there is access, the number will be increased by one. If an existing WAN link is disconnected, the number will be reduced by one.

Step A20: If the number of the access links is greater than one, perform the following steps: calculate the network quality value of each access link according to the network quality parameter of each access link;

In this embodiment, the communication device determines whether the number of access links is greater than one. If the number of access links is greater than one, it calculates the respective network quality parameters of each access link based on the respective network quality parameters of each access link. Network quality value; then, sort the network quality values from large to small, use the access link corresponding to the first network quality value ranked first as the main link, and use other access links except the main link The incoming link is used as the slave link; the first network quality value is compared with the last first network quality value to obtain the comparison result; finally, based on the comparison result and the number of links currently connected to the external network, the slave link is Select the target secondary link that connects to the external network, and connect the target secondary link and primary link to the external network.

Step A30: If the number of access links is equal to one, connect the access links to the external network.

In this embodiment, the communication device determines whether the number of access links is greater than one. If the number of access links is equal to one, it means that only one WAN link can be used as an Internet access interface, and then the access link is connected External network.

In this way, the communication device counts the number of currently accessed WAN links in real time, and when there are multiple links, flexibly selects links with better network quality from these multiple links for network switching to optimize the network environment and provide It brings users a better Internet experience. When there is only one link, the only link is used as the Internet interface. There is no need to calculate the network quality value of the link, saving the computing resources of the device.

Exemplarily, in a feasible embodiment, as shown in Figure 3, the communication device includes a WAN link monitoring module, a link parameter acquisition module, a link quality scoring module and a routing module, where the WAN link monitoring module The module is responsible for monitoring and counting the access and disconnection of WAN links. When a WAN link is connected or disconnected, the module counts the number of WAN links connected to the network by the device in real time, and sends event notifications to obtain link parameters. module; the link parameter acquisition module is responsible for periodically acquiring the three network quality parameters of delay, packet loss, and throughput of each WAN link, and recording them in the data table for use by the link quality scoring module; link quality The scoring module is responsible for calculating the quality score of each WAN link, that is, the network quality value, through weighted calculations through the above three network quality indicators and user configurations, and then sorting and recording them as the basis for updating the routing module; the routing module , responsible for maintaining and updating the routing table of communication equipment to ultimately decide which WAN link to access the external ISP network.

In this embodiment, the embodiment of the present application calculates the network quality value of each access link according to the network quality parameter of each access link; and sorts the network quality values in order from large to small. Sort, use the access link corresponding to the first network quality value ranked first as the main link, use other access links except the main link as the slave link; use the first network quality value The value is compared with the last first network quality value to obtain the comparison result; according to the comparison result and the number of links currently accessing the external network, select the target secondary link to access the external network from the secondary link, And connect the target slave link and the main link to the external network.

In this way, the embodiment of the present application selects the main link for connecting to the external network based on the network quality of each access link of the multi-WAN communication device, thereby realizing automatic link switching, and based on the actual use of the main link The quality status changes before and after to evaluate and select to add slave links to optimize the network communication quality. This not only ensures the comprehensiveness of the overall network quality, but also takes into account the flexibility of network switching, thus improving the quality provided by multi-WAN communication equipment. Network communication quality of network services.

Furthermore, based on the first embodiment of the link selection method of the present application, a second embodiment of the link selection method of the present application is proposed.

In this embodiment, the above step S10: Calculate the network quality value of each access link according to the network quality parameter of each access link, including:

Step S101: Periodically obtain the network quality parameters of each access link according to the preset detection frequency, where the network quality parameters include delay, packet loss rate and throughput;

In this embodiment, after the communication device is turned on, it periodically obtains the network quality parameters of each of its access WAN links according to the preset detection frequency. The network quality parameters include the link delay, packet loss rate and throughput. Volume, delay, packet loss rate and throughput are all performance indicators for detecting network quality.

Specifically, in this embodiment, the communication device is preset with a network testing tool. Currently, there are many network testing tools, such as ping, speedtest, tracerouter, iperf, etc. Since the iperf tool can detect network delay, packet loss rate and throughput at the same time, it has comprehensive and powerful functions. In this implementation, iperf is used as an example. After the communication device is turned on, it counts through its own configured timer. When the timing reaches the preset When the detection frequency is set, iperf is started to detect the network quality parameters such as delay, packet loss rate and throughput of each WAN link and record them to form a network quality parameter detection table of each WAN link.

Step S102: For each access link, weight the delay, the packet loss rate and the throughput corresponding to the access link according to their respective weights to obtain the access link. The network quality value corresponding to the link.

In this embodiment, the communication device weights and calculates the network quality parameters such as delay, packet loss rate, and throughput corresponding to the link according to their respective weights for each access WAN link to obtain the network quality corresponding to the link. value, network quality value S _T =ω ₁ S ₁ +ω ₂ S ₂ +ω ₃ S ₃ , where S ₁ , S ₂ and S ₃ respectively represent the delay, packet loss rate and throughput of a certain WAN link. _{For the ratings on} network indicators, and the impact of the three indicators can also be determined according to the needs of the network, which not only ensures the comprehensiveness of the overall network quality, but also takes into account the flexibility of the network quality.

It should be noted that in this embodiment, after the communication device obtains the network quality parameters of each access link, it needs to preprocess these parameters in order to perform weighted calculations on these parameters to obtain the network quality value. The processing steps specifically include:

Preprocessing steps for delay: According to the popular network delay levels, it can be divided into four levels: 0~10ms, 10ms~50ms, 50ms~100ms and greater than 100ms. The corresponding delay scores can be set to 10 respectively. , 8, 5 and 3 represent good, normal, average and poor latency. The smaller the latency, the more stable the network is.

Preprocessing steps for packet loss rate: According to the popular network packet loss rate classification, it can be divided into four levels: 0 to 0.1%, 0.1% to 1%, 1% to 5%, and greater than 5%, which also correspond to scores. It can be set to 10, 8, 5 and 3 respectively, representing good, normal, average and poor packet loss rates. The lower the packet loss, the higher the data reliability.

Throughput: Throughput is a measure of the ability of a WAN link to actually send and receive data per unit time. The levels can be divided into four levels according to the actual throughput: greater than 100Mbps, 50Mbps~100Mbps, 20Mbps~50Mbp and less than 20Mbps. The corresponding scores can also be set to 10, 8, 5 and 3 respectively, which means good and normal throughput. , General and difference, the higher the throughput, the faster the data is obtained.

Further, in a feasible embodiment, before the above step S101, the link selection method of the present application may also include:

Step S103: Monitor user configuration data in real time, where the user configuration data includes detection frequency, priority of delay, priority of packet loss rate, and priority of throughput;

It should be noted that in this embodiment, the user configuration data is data configured by the user on the user configuration interface of the communication device. Normally, the user can enter the user configuration interface of the communication device on the user terminal and perform WAN configuration in the interface. Port related settings.

In this embodiment, the communication device monitors user configuration data in real time. The monitored data specifically includes the detection frequency of link network quality parameters, the priority of link delay, the priority of link packet loss rate, and link throughput. priority.

Specifically, the detection frequency initially defaults to 1h, and has configuration values of 15min, 30min, 1h, 3h, 6h, etc. Under the condition that there are multiple WAN links, after the timer configured by the communication device is started, the configured duration is reached. The communication equipment performs link quality detection and switching. Users can set and adjust this value according to actual needs; for the priorities of delay, packet loss rate and throughput, the initial default priority of the three is the same, and the weight of the three is the same. The ratio is 1:1:1. Users can adjust the priorities of the three according to actual needs. For example, when the user configures delay priority, the weight ratio of the three is switched to 2:1:1.

Step S104: Determine the respective weights of the delay, the packet loss rate and the throughput according to the priority of the delay, the priority of the packet loss rate and the priority of the throughput.

In this embodiment, the communication device determines the respective weights of the delay, packet loss rate, and throughput based on the priority of the link delay, the priority of the link packet loss rate, and the priority of the link throughput. For parameters with higher priority, the communication device increases its weight.

Exemplarily, in a feasible embodiment, the communication device calculates the network quality value according to the detection frequency and network quality parameter priority configured by the user, and the communication device provides the user with a variety of configuration options, so that the communication device has three Taking the access link as an example, when the network quality parameters of each link are unique, the network quality values and ranking order of each of the three links are obtained based on the different priorities configured by the user, as shown in the following table:

In this way, based on different user configurations, even if the network quality parameters of multiple WAN links of communication devices remain unchanged, the network quality value of each link will change, which will cause the device to access the external network. When the link is switched, the communication equipment can better support real-time services such as live broadcasts and online games when the user configures latency priority, and the communication equipment can better support video conferencing and high-definition TV when the user configures packet loss rate priority. For services, when the user configures the communication device as priority throughput, it can better support services such as downloading and web browsing, thus meeting the different network needs of users and giving users a better Internet experience.

Furthermore, based on the above-mentioned first embodiment and/or second embodiment of the link selection method of the present application, a third embodiment of the link selection method of the present application is proposed.

In this embodiment, the step of "selecting a target slave link to access the external network from the slave links based on the comparison result and the number of links currently connected to the external network" in step S40 includes:

Step S401: Determine the number of links currently connected to the external network;

In this embodiment, the communication device determines the number of links currently connected to the external network, that is, the number of links connected to the external network determined after the last sorting of network quality values.

Step S402: If the number of links is one and the comparison result is that the first network quality value is greater than or equal to the last first network quality value, select the link to access the external network from the slave link. The number of target slave links is zero;

In this embodiment, if it is determined that the number of links currently connected to the external network is 1, and the comparison result between the first network quality value and the last first network quality value is that the first network quality value is greater than or equal to the last time The first network quality value indicates that the network quality of the main link has a trend of optimization or stability. Then the communication equipment only needs to provide network services through the main link to meet the user's Internet access needs, and there is no need to add a slave link to connect to the outside. network.

Step S403: If the number of links is one and the comparison result is that the first network quality value is less than the last first network quality value, calculate the first network quality value and the last first network quality value. A ratio between network quality values, and selecting a target slave link to access the external network from the slave links based on the ratio and the network quality value of the slave link.

In this embodiment, if it is determined that the number of links currently connected to the external network is 1, and the comparison result between the first network quality value and the last first network quality value is that the first network quality value is smaller than the last first first network quality value, When the network quality value is high, it indicates that the network quality of the main link has a tendency to deteriorate and the network load is heavy. The communication device calculates the ratio between the first network quality value and the historical first network value, and calculates the ratio based on the ratio and the slave link's The network quality value selects the target slave link to access the external network from the slave links.

For example, in this embodiment, the ratio between the first network quality value and the last first network quality value is 4:5, which means that the decline ratio of the network quality value of the main link is 20%, and the communication device is According to this reduction ratio, 20% of the business load can be handed over to the slave link for processing, and 80% of the business load can still be processed by the master link. However, according to the network quality value of the slave link, it is determined whether it is a target slave link. Whether the link handles the 20% of the network load or multiple target slave links handle it, the specific slave link load balancing method will not be described in detail here.

Further, in a feasible embodiment, after the above step S401, the link selection method of the present application may also include:

Step S404: If the number of links is greater than one, obtain the respective load percentages of the historical primary link and the historical secondary link currently connected to the external network, and compare the network quality value of the secondary link with the historical secondary link. Compare the network quality values of the road to obtain the second comparison result;

In this embodiment, if it is determined that the number of links currently connected to the external network is greater than 1, that is, the link currently connected to the external network by the communication device includes a master link and at least one slave link, then the communication device obtains the current link connected to the external network. The respective load percentages of the primary link and the secondary link of the network are compared, and the network quality value of the secondary link determined this time is compared with the network quality value of the historical secondary link to obtain a second comparison result.

Step S405: If the comparison result is that the first network quality value is equal to the last first network quality value, select a target slave link to access the external network from the slave link according to the second comparison result. road;

It should be noted that in the following embodiments, for ease of understanding and explanation, the primary link determined this time is called L1, the first network quality value is S1, the secondary link determined this time is called L2, and the first network quality value is S1. The second network quality value is S2, the current primary link connecting to the external network is called L1', the last first network quality value is S1', the current secondary link connecting to the external network is called L2', and the historical second network The quality value is S2', where there can be multiple slave links determined this time, and there can also be multiple slave links currently connected to the external network. Each slave link corresponds to a network quality value.

In this embodiment, when the number of links currently connected to the external network is greater than 1, and the comparison result between S1 and S1' is S1=S1', the communication device will use the second comparison result between S2 and S2' to , select the target slave link to access the external network from the slave link.

Specifically, when there is only one slave link currently connected to the external network, if S2=S2', then a slave link corresponding to S2 is used as the target slave link to access the external network. If the slave link currently connected to the external network When there are multiple links, the network quality value S2 of L2 determined this time is also compared with the network quality values S2' of multiple L2's in sequence, and the number of target slave links and the load percentage of each are determined based on the comparison results.

Step S406: If the comparison result is that the first network quality value is greater than or less than the last first network quality value, calculate the ratio between the first network quality value and the last first network quality value. , and select a target slave link for accessing the external network from the slave links based on the ratio, the load percentage and the second comparison result.

In this embodiment, when the number of links currently connected to the external network is greater than 1, and the comparison result between S1 and S1' is S1>S1' or S1<S1', the communication device will The ratio, the respective load percentages of L1' and L2', and the size comparison results between S2 and S2' are used to select the target slave link to access the external network from the slave links.

Further, in a feasible embodiment, after the step of "sorting the network quality values in order from large to small" in the above step S20, the link selection method of the present application may also include:

Step B10: Update the routing table according to the sorting of the network quality value, so that each access link in the routing table is arranged according to the sorting of the network quality value;

Step B20: Perform routing selection based on the updated routing table.

It should be noted that in this embodiment, the routing table stores the path to a specific network address (in some cases, the routing metric value of the path is also recorded), and the routing table contains topology information around the network. Routing tables are used to implement routing protocols and routing. Routing refers to the network-wide process of determining the end-to-end path of a packet from source to destination.

In this embodiment, the communication device updates the routing table according to the sorting of the network quality value of each access link, so that the various access links recorded in the routing table are arranged according to the sorting of the network quality value from high to low. , the communication device then performs routing selection based on the routing table to provide network services to users.

Exemplarily, in this embodiment, as shown in Figure 4, after the communication device is started, whether there is a WAN link access status is monitored in real time. When a WAN link is connected or disconnected, the access WAN link statistics are The number of access links. If the number of access links is greater than 1, the timer is started, and the network quality parameters of each access WAN link are obtained when the timer duration is reached. If the number of access links is not greater than 1, Then select the only WAN link as the Internet interface; after obtaining the network quality parameters of each access WAN link, the communication device detects whether the user has configured the priority of each parameter. If so, the link is configured based on the user configuration and parameters. Perform scoring to obtain the network quality value of the link. If not, use the default configuration to score the network quality value of the link. After obtaining the scores of each link, select the WAN link with the highest score, and then determine the current routing table ( That is, whether the routing table) corresponds to the WAN link with the highest score. If it corresponds, the current routing table is maintained. If it does not correspond, the routing table is updated based on the WAN link with the highest score. The communication device performs routing selection based on the updated routing table. , that is, the link with the highest network quality value is connected to the external network, and the above process is periodically repeated through a timer to ensure that the communication equipment provides users with network services with the highest network quality.

In this way, in this embodiment, by balancing the load of the primary link and the secondary link, the load pressure of the primary WAN link is reduced, and the utilization rate of each WAN link is improved, which not only fully utilizes the capacity of the secondary network Idle bandwidth effectively improves network quality.

In addition, the embodiment of the present application also provides a link selection device.

Please refer to Figure 5. The link selection device of this application includes:

The calculation module 10 is used to calculate the respective network quality values of each access link according to the respective network quality parameters of each access link;

The sorting module 20 is configured to sort the network quality values in order from large to small, use the access link corresponding to the first network quality value ranked first as the main link, and use the access link except the main link Access links other than the link are used as slave links;

The comparison module 30 is used to compare the first network quality value with the last first network quality value to obtain a comparison result;

The link selection module 40 is configured to select a target slave link that accesses the external network from the slave links according to the comparison result and the number of links currently connected to the external network, and select the target slave link from the slave link. and the main link to access the external network.

Optionally, the link selection device of this application may also include:

The status monitoring module is used to monitor the link access status in real time, and determine the number of access links according to the link access status; if the number of access links is greater than one, execute the The network quality parameters of each of the access links are calculated, and the subsequent steps are to calculate the network quality value of each of the access links; if the number of the access links is equal to one, connect the access links to the external network.

Optionally, the computing module 10 includes:

A parameter acquisition unit configured to periodically acquire network quality parameters of each access link according to a preset detection frequency, where the network quality parameters include delay, packet loss rate and throughput;

A calculation unit configured to weight and calculate the delay, the packet loss rate and the throughput corresponding to the access link according to their respective weights for each access link to obtain the The network quality value corresponding to the access link.

Optionally, the link selection device of this application may also include:

The user configuration monitoring module is used to monitor user configuration data in real time, where the user configuration data includes detection frequency, priority of delay, priority of packet loss rate and priority of throughput; according to the priority of the delay The level, the priority of the packet loss rate and the priority of the throughput determine the respective weights of the delay, the packet loss rate and the throughput.

Optionally, the link selection module 40 includes:

The link number determination unit is used to determine the number of links currently connected to the external network;

A first link selection unit configured to select from the slave link if the number of links is one and the comparison result is that the first network quality value is greater than or equal to the last first network quality value. The number of target slave links selected to access the external network is zero;

A second link selection unit configured to calculate the first network quality value and the last network quality value if the number of links is one and the comparison result is that the first network quality value is less than the last first network quality value. The ratio between the last first network quality values, and selecting a target slave link to access the external network from the slave links based on the ratio and the network quality value of the slave link.

Optionally, the link selection module 40 also includes:

An acquisition unit configured to, if the number of links is greater than one, acquire respective load percentages of the historical primary link and the historical slave link currently connected to the external network, and compare the network quality value of the slave link with the historical Compare the network quality value of the link to obtain the second comparison result;

A third link selection unit configured to select access from the secondary link according to the second comparison result if the comparison result is that the first network quality value is equal to the last first network quality value. External network target slave link;

A fourth link selection unit, configured to calculate the first network quality value and the last first network quality value if the comparison result is that the first network quality value is greater than or less than the last first network quality value. A ratio between quality values, and based on the ratio, the load percentage and the second comparison result, select a target secondary link to access the external network from the secondary links.

Optionally, the link selection device of this application may also include:

A routing module configured to update the routing table according to the sorting of the network quality value, so that each access link in the routing table is arranged according to the sorting of the network quality value; based on the updated routing table for routing selection.

Among them, the functional implementation of each module in the above-mentioned link selection device corresponds to each step in the above-mentioned link selection method embodiment, and its functions and implementation processes will not be described in detail here.

In addition, this application also proposes a storage medium. The storage medium is a computer-readable storage medium. A link selection program is stored on the storage medium. When the link selection program is executed by the processor, the link selection process of the application is implemented as described above. Steps of the path selection method.

The specific embodiments of the storage medium of the present application are basically the same as the above embodiments of the link selection method, and will not be described again here.

It should be noted that, in this document, the terms "comprising", "comprises" or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article or device that includes a series of elements not only includes those elements, It also includes other elements not expressly listed or inherent in the process, method, article or apparatus. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method, article or apparatus that includes that element.

The above serial numbers of the embodiments of the present application are only for description and do not represent the advantages or disadvantages of the embodiments.

Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. implementation. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence or that contributes to the existing technology. The computer software product is stored in a storage medium (such as ROM/RAM, disk, CD), including several instructions to cause a terminal device (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of the present application.

The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of the present application may be directly or indirectly used in other related technical fields. , are all equally included in the patent protection scope of this application.

Claims (10)

1. A link selection method, characterized in that the method includes: Calculate the respective network quality value of each access link according to the respective network quality parameters of each access link; Sort each of the network quality values in order from large to small, use the access link corresponding to the first network quality value ranked first as the main link, and use other access links except the main link. The link acts as a slave link; Compare the first network quality value with the last first network quality value to obtain a comparison result; According to the comparison result and the number of links currently connected to the external network, select a target slave link to access the external network from the slave links, and connect the target slave link and the main link External network. 2. The link selection method according to claim 1, characterized in that the method further includes: Monitor link access status in real time, and determine the number of access links based on the link access status; If the number of the access links is greater than one, then perform the steps of calculating the network quality value of each access link according to the network quality parameter of each access link and subsequent steps; If the number of the access links is equal to one, the access links are connected to the external network. 3. The link selection method according to claim 1, wherein the step of calculating the network quality value of each access link according to the network quality parameter of each access link includes: Periodically obtain network quality parameters of each access link according to a preset detection frequency, where the network quality parameters include delay, packet loss rate and throughput; For each access link, the delay, the packet loss rate and the throughput corresponding to the access link are weighted and calculated according to their respective weights to obtain the corresponding network quality value. 4. The link selection method according to claim 3, wherein before the step of periodically obtaining network quality parameters of each access link according to a preset detection frequency, the method further includes: Monitor user configuration data in real time, where the user configuration data includes detection frequency, priority of delay, priority of packet loss rate, and priority of throughput; The respective weights of the delay, the packet loss rate and the throughput are determined according to the priority of the delay, the priority of the packet loss rate and the priority of the throughput. 5. The link selection method according to claim 1, wherein the target of accessing the external network is selected from the secondary link according to the comparison result and the number of links currently accessing the external network. Steps from the link include: Determine the number of links currently connected to the external network; If the number of links is one and the comparison result is that the first network quality value is greater than or equal to the last first network quality value, select a target slave link to access the external network from the slave links. The number of roads is zero; If the number of links is one and the comparison result is that the first network quality value is less than the last first network quality value, then calculate the first network quality value and the last first network quality value. and select a target slave link to access the external network from the slave links based on the ratio and the network quality value of the slave link. 6. The link selection method according to claim 5, wherein after the step of determining the number of links currently connected to the external network, the method further includes: If the number of links is greater than one, obtain the respective load percentages of the historical primary link and the historical secondary link currently connected to the external network, and compare the network quality value of the secondary link with the network quality value of the historical secondary link. Compare the quality values to obtain the second comparison result; If the comparison result is that the first network quality value is equal to the last first network quality value, then according to the second comparison result, select a target slave link to access the external network from the slave links; If the comparison result is that the first network quality value is greater than or less than the last first network quality value, then the ratio between the first network quality value and the last first network quality value is calculated, and based on The ratio, the load percentage and the second comparison result are used to select a target secondary link for accessing the external network from the secondary links. 7. The link selection method according to any one of claims 1 to 6, characterized in that, after the step of sorting the network quality values in order from large to small, the method further includes : Update the routing table according to the sorting of the network quality value, so that each access link in the routing table is arranged according to the sorting of the network quality value; Routing is selected based on the updated routing table. 8. A link selection device, characterized in that the link selection device includes: A calculation module configured to calculate the respective network quality values of each access link based on the respective network quality parameters of each access link; A sorting module, configured to sort the network quality values in order from large to small, use the access link corresponding to the first network quality value ranked first as the main link, and use the access link other than the main link Other access links serve as slave links; A comparison module, used to compare the first network quality value with the last first network quality value to obtain a comparison result; A link selection module, configured to select a target slave link that accesses the external network from the slave links based on the comparison result and the number of links currently connected to the external network, and combine the target slave link and The main link is connected to an external network. 9. A terminal device, characterized in that the terminal device includes: a memory, a processor, and a link selection program stored on the memory and executable on the processor, and the link selection program is When executed by the processor, the steps of the link selection method according to any one of claims 1 to 7 are implemented. 10. A storage medium, characterized in that the storage medium is a computer-readable storage medium, and a link selection program is stored on the storage medium. When the link selection program is executed by a processor, the link selection program implements claim 1 Steps of the link selection method described in any one of to 7.