CN107135091B - Application quality index mapping method, server and client - Google Patents
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- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
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- H—ELECTRICITY
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
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- H—ELECTRICITY
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- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
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Abstract
The application provides an application quality index mapping method, a server and a client. The server receives a mapping request of a client; the server finds a matched mapping table or mapping formula according to an application identifier of an application and a network protocol used by the application, which are included in the mapping request, and obtains a network quality index corresponding to an application quality index included in the mapping request according to the mapping table or the mapping formula, wherein the network quality index is used for realizing the application quality index when the application runs; and the server sends a mapping response to the client, wherein the mapping response comprises the network quality index. And after receiving the mapping response, the client sends the network quality index to a network controller, so that the network controller configures network equipment according to the network quality index. The method and the device realize the mapping from the application quality index to the network quality index, and can configure the network equipment according to the network quality index corresponding to the application quality index.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to an application quality indicator mapping method, a server, and a client.
Background
With the development and application of Software Defined Networking (SDN) and Network Function Virtualization (NFV) technologies, many Network devices, such as switches and routers, open interfaces for controllers to use. The controller can configure the definable functions provided by the network equipment through the open interface of the network equipment according to the actual requirements of the application, so that the application quality index of the application is met.
However, the application quality indicator of the current application is often not matched with the definable function provided by the network device, so that the controller cannot accurately configure the network device. For example, the application quality indicator of a video application is that the Mean Opinion Score (MOS) is not less than 4.5, and the definable functions provided by the Network device are to adjust the access bandwidth size, configure Virtual Private Network (VPN) service, configure OpenFlow flow table, and the like, it is unclear how to configure the definable functions provided by the Network device to make the MOS of the video application not less than 4.5 for the video application.
Disclosure of Invention
The application provides an application quality index mapping method, a server and a client, which are used for solving the problem that network equipment cannot be accurately configured due to mismatching between the application quality index of the current application and a definable function provided by the network equipment.
A first aspect of the present application provides an application quality indicator mapping method, including:
the method comprises the steps that a server receives a mapping request of a client, wherein the mapping request comprises an application quality index configured for an application, an application identifier of the application and a network protocol used by the application;
the server finds a matched mapping table or mapping formula according to the application identifier and the network protocol; the mapping table stores a corresponding relation between the application quality index and the network quality index of the application associated with the network protocol; the mapping formula indicates an association between an application quality indicator and a network quality indicator of the application associated with the network protocol
The server acquires a network quality index corresponding to the application quality index according to the matched mapping table or mapping formula, wherein the network quality index is used for realizing the application quality index when the application runs;
the server sends a mapping response to the client, wherein the mapping response comprises the network quality index, so that the client sends the network quality index to a network controller, and the network controller configures network equipment according to the network quality index.
In one possible design, the application quality indicator includes at least one of:
MOS value, quality class, key quality indicators of the application.
In one possible design, the network quality indicator includes at least one of:
bandwidth, delay, packet loss rate, buffering, and jitter.
In one possible design, the network quality indicator is multiple, and the network quality indicator obtained through a mapping formula meets the following formula requirements:
wherein, YAIRepresenting the MOS value, X, corresponding to the application quality indicatoriRepresenting one of the plurality of network quality indicators, N representing the number of network quality indicators comprised in the plurality of network quality indicators, wiIs an empirical value, w, obtained through a plurality of simulation testsi≥0；
wherein, ciAnd spiIs an empirical value obtained through a plurality of simulation tests, ci≥0，spi≥0。
In one possible design, the mapping request further includes at least one of the following constraints:
bandwidth constraint conditions, packet loss rate constraint conditions, time delay constraint conditions and network type constraint conditions;
before sending the mapping response to the client, the method further includes:
the server determines that the network quality indicator satisfies a constraint included in the mapping request.
A second aspect of the present application provides an application quality indicator mapping method, including:
a client sends a mapping request to a server, wherein the mapping request comprises an application quality index configured for an application, an application identifier of the application and a network protocol used by the application;
the client receives a mapping response returned by the server, wherein the mapping response comprises a network quality index, and the network quality index is used for enabling the application to realize the application quality index when the application runs;
the client acquires the network quality index from the mapping response;
and the client sends the network quality index to a network controller so that the network controller configures network equipment according to the network quality index.
A third aspect of the present application provides a server having a function of implementing the server behavior in the above method. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions.
In one possible design, the server includes:
the mapping method comprises a receiving unit, a sending unit and a receiving unit, wherein the receiving unit is used for receiving a mapping request of a client, and the mapping request comprises an application quality index configured for an application, an application identifier of the application and a network protocol used by the application;
the searching unit is used for searching the matched mapping table or mapping formula according to the application identifier and the network protocol; the matched mapping table or mapping formula stores the corresponding relation between the application quality index and the network quality index of the application associated with the network protocol; the mapping formula indicates an incidence relation between the application quality index and a network quality index;
a processing unit, configured to obtain, according to the matched mapping table or mapping formula, a network quality indicator corresponding to the application quality indicator, where the network quality indicator is used to implement the application quality indicator when the application runs;
a sending unit, configured to send a mapping response to the client, where the mapping response includes the network quality indicator, so that the client sends the network quality indicator to a network controller, so that the network controller configures a network device according to the network quality indicator.
In one possible design, the server includes a receiver, a processor, and a transmitter, and the receiver, the processor, and the transmitter are connected to each other through a bus; wherein
The receiver is configured to receive a mapping request of a client, where the mapping request includes an application quality indicator configured for an application, an application identifier of the application, and a network protocol used by the application;
the processor is used for finding a matched mapping table or mapping formula according to the application identifier and the network protocol; the mapping table stores a corresponding relation between the application quality index and the network quality index of the application associated with the network protocol; the mapping formula indicates an incidence relation between the application quality index and a network quality index; the processor obtains a network quality index corresponding to the application quality index according to the matched mapping table or mapping formula, wherein the network quality index is used for realizing the application quality index when the application runs;
the transmitter is configured to send a mapping response to the client, where the mapping response includes the network quality indicator, so that the client sends the network quality indicator to a network controller, and the network controller configures a network device according to the network quality indicator.
A fourth aspect of the present application provides a client, where the client has a function of implementing a client behavior in the foregoing method. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions.
In one possible design, the client includes:
a sending unit, configured to send a mapping request to a server, where the mapping request includes an application quality indicator configured for an application, an application identifier of the application, and a network protocol used by the application;
a receiving unit, configured to receive a mapping response returned by the server, where the mapping response includes a network quality indicator, and the network quality indicator is used to enable the application to implement the application quality indicator when the application runs;
an obtaining unit, configured to obtain the network quality indicator from the mapping response;
the sending unit is further configured to send the network quality indicator to a network controller, so that the network controller configures a network device according to the network quality indicator.
In one possible design, the client includes a transmitter, a receiver, and a processor, and the receiver, the processor, and the receiver are connected to each other through a bus; wherein
The transmitter is used for transmitting a mapping request to a server, wherein the mapping request comprises an application quality index configured for an application, an application identifier of the application and a network protocol used by the application;
the receiver is configured to receive a mapping response returned by the server, where the mapping response includes a network quality indicator, and the network quality indicator is used to enable the application to implement the application quality indicator when the application runs;
the processor is used for acquiring the network quality index from the mapping response;
the transmitter is further configured to transmit the network quality indicator to a network controller, so that the network controller configures a network device according to the network quality indicator.
By using the scheme provided by the application, the mapping from the application quality index to the network quality index can be completed, so that the definable function of the network equipment can be configured according to the network quality index corresponding to the application quality index.
Drawings
Fig. 1 is a schematic diagram of a system applied by a quality index mapping method according to the present application;
FIG. 2 is a schematic diagram of another system for applying the quality index mapping method provided herein;
fig. 3 is a schematic flowchart of an application quality indicator mapping method provided in the present application;
fig. 4 is a schematic structural diagram of a server provided in the present application;
FIG. 5 is a schematic diagram of another server provided in the present application;
fig. 6 is a schematic structural diagram of a client according to the present application;
fig. 7 is a schematic structural diagram of another client provided in the present application.
Detailed Description
Hereinafter, some terms in the present application will be explained.
An "application quality indicator" refers to the requirement and measure of its quality by an application, and may be measured by MOS value, quality level, or key quality indicator of the application. The "MOS value" is generally made by 5 minutes, and a higher value indicates that the application has a higher requirement on the quality of the MOS value, for example, the MOS value range corresponding to the worst quality standard may be set to 0 to 1.5 minutes, and the MOS value range corresponding to the highest quality standard may be set to 4.5 to 5 minutes.
The "quality level" may be divided into a plurality of levels from high to low, such as 5 levels of good, medium, inferior and inferior, and may of course include more or less than these 5 levels.
The "key quality index of an application" may include a web browsing application, a video application, a File Transfer Protocol (FTP) application, an Email application, and the like. Different types of applications have different types of key quality indicators. For example, a web browsing application may contain the following indicators: the method comprises the following steps of page response time, first screen display time and complete loading time, wherein the page response time refers to a time period from the time when a user inputs a Uniform Resource Locator (URL) address and presses an enter key to the time when a webpage starts to be loaded, and a title above a browser is successfully displayed to indicate that the webpage starts to be loaded; the first screen display time refers to a time period from when a user inputs a URL address and presses an enter key to when data returned by a website first occupies a user terminal screen; the full loading time is the time period from the moment the user inputs the URL address and presses the enter key to the moment the entire web page is fully loaded on the browser. For another example, a video application may include the following indicators: the method comprises the steps of first buffer time, watching pause times and watching pause ratio, wherein the first buffer time refers to a time period from the time when a request message for acquiring a program source is sent by a terminal to the time when returned data enable the terminal to generate a video image for the first time; the watching pause times refer to the times of waiting for buffering because the terminal cannot ensure video decoding playing because the average downloading rate is less than the average video code rate within a unit watching time (such as 5 minutes) of a user; the watching pause ratio is the ratio of the total time length of waiting buffering to the unit watching time because the average downloading rate of the terminal is less than the average video code rate and the video decoding playing can not be guaranteed in the unit watching time of the user.
The "network quality index" is an index for measuring the performance of the data center network, and may include at least one of bandwidth, delay, packet loss rate, jitter, cache, and other indexes. Wherein, the bandwidth is used for representing the data transmission capability of the network; the delay is the time taken for the message to be transmitted in the transmission medium, i.e. the time period from the beginning of the message entering the network to the beginning of leaving the network; jitter is the amount of variation in delay; the packet loss rate is the ratio of the loss part of the data packet to the total number of the transmitted data packets; the cache is a storage space for temporarily storing network forwarding messages.
Norm is a basic concept in mathematics, and can be expressed by | | | X | | |, assuming that X ═ X |, [ X | ]1,x2,...,xn]Then, then
For example, X ═ 1,2,4,2]，||X||＝5。
At present, the interfaces used by the network equipment for application are all open in the aspect of network performance and are not in line with the actual requirements of the application. For example, the actual requirements of a video application are that the first buffering time is less than 2 seconds (unit: s) and the watching pause time is less than 1, and it is not clear to developers and users of the video application how the network device should be configured to meet the actual requirements of the video application. Therefore, the application quality index mapping method provides a quality index mapping protocol to complete mapping from the application quality index to the network quality index, so that the network equipment can be configured according to the network quality index corresponding to the application quality index.
The technical scheme of the invention is explained by combining the drawings and various embodiments in the specification.
The application quality index mapping method provided by the application can be applied to, but not limited to, the following two forms of systems.
A first form of system is shown in fig. 1 and comprises an application, a client, a server, a network controller and a network device, wherein the client is built into the application.
The second form of system is shown in fig. 2 and includes an application, a client, a server, a network controller and a network device, wherein the client is built in the network controller.
In both forms of the system, the roles and functions of the client, server, network controller and network device are the same, wherein,
the client is configured with information of the server in advance, including address information of the server, and a Transmission Control Protocol (TCP) port number or a User Datagram Protocol (UDP) port number of the server. The client establishes network connection with the server according to the pre-configured information of the server, and sends a mapping request to the server after completing handshaking and capability negotiation, wherein the mapping request comprises an application quality index required by the application, an application identifier of the application and a network protocol used by the application. Taking a web browsing application as an example, the mapping request may include the following contents: { application identification: browsing a webpage; using a network protocol: TCP and Hypertext Transfer Protocol (HTTP); the application quality index is as follows: MOS value is 4.5 }.
The server is pre-configured with various types of mapping tables and mapping formulas, and the specific mapping table or mapping formula to be used can be determined according to the application identifier of the application and the network protocol to be used. When receiving a mapping request of a client, the server finds a corresponding mapping table or mapping formula according to an application identifier and a network protocol included in the mapping request, converts an application quality index included in the mapping request into a corresponding network quality index according to the found mapping table or mapping formula, and returns the network quality index to the client.
And the network controller is used for configuring the network equipment according to the network quality index and returning a response message to the application after the configuration is finished. The network controller may be an SDN controller, an NFV Management and orchestration System (NFV-MANO for short), or other System or device with network configuration Management capabilities.
And the network device is provided with an open interface for the network controller to configure the definable functions of the network device. The network device may be a switch, router, firewall, load balancer, or other device that opens an interface for use by a network controller.
The difference between the two forms of systems is that in the first form of system, since the client is built in the application, each application can directly send the network quality index obtained by the built-in client, and the location and range of application deployment to the network controller in the configuration request. In the system of the second form, since the client is built in the network controller, each application needs to include its own application identifier, the network protocol used, the requested application quality index, and the deployed position and range in the configuration request and send them to the network controller, and the client built in the network controller maps the application quality index of each application uniformly.
In the two forms of the system, the client and the server interact through a quality index mapping protocol. As shown in fig. 3, according to the quality index mapping protocol provided in the present application, the process of mapping the application quality index into the network quality index is as follows:
step 301: the client acquires an Internet Protocol (IP) address of the server and establishes network connection with the server.
Taking establishing a TCP connection as an example, three handshakes of the TCP connection need to be completed between the client and the server, that is, the 3 message interactions of SYN, SYN ACK, and ACK are completed.
The client can acquire the IP address of the server in the following three ways:
1) the IP address of the server is manually configured on the client, and the IP address can be manually configured in a command line or graphical interface mode.
2) In the dynamic host configuration protocol (english: dynamic Host Configuration Protocol, abbreviation: DHCP) is added with a new attribute (english: option), through which the client passes the IP address of the server, the client acquires the IP address of the server from the DHCP server.
3) The domain name of the server is configured on the client, or a new Option is added in the DHCP, and the domain name of the server is transmitted through the new Option; the client sends a Domain Name resolution request to a Domain Name Server (DNS), which requests to resolve the Domain Name of the Server into the IP address of the Server.
Step 302: the client and the server finish handshaking of a quality index mapping protocol.
The messages from and to each other in the handshake process may contain the version number of the quality indicator mapping protocol supported by each. If the version numbers are consistent, subsequent message interaction can be carried out; if the version numbers are not consistent, subsequent message interaction cannot be carried out, and at the moment, the party with the higher version number can reduce the version number of the quality index mapping protocol to carry out handshake again.
Step 303: and the client and the server carry out capability negotiation.
In the capability negotiation process, both parties may negotiate their respective capabilities, for example, the server may notify the client of the types of applications supported by the server and the value ranges of the supported application quality index mappings.
The above steps 301 to 303 are optional steps of the present application.
Step 304: the client sends a mapping request to the server, wherein the mapping request comprises an application quality index configured for an application, an application identifier of the application and a network protocol used by the application.
Wherein the application identification may be a name or a type of the application; the application quality index may include one or more of a MOS value, a quality class, and a key quality index of the application; the network protocol may include an application layer protocol and/or a transport layer protocol used by the application.
Taking a web browsing application as an example, the mapping request may include the following: { application identification: browsing a webpage; using a network protocol: TCP and FTP; the application quality index is as follows: MOS value 4.5, quality grade good.
Step 305: and after receiving the mapping request of the client, the server searches the matched mapping table or mapping formula according to the application identifier and the network protocol.
The mapping table stores a corresponding relation between an application quality index of an application associated with a network protocol and a network quality index; the mapping formula indicates an association between an application quality indicator of an application associated with the network protocol and a network quality indicator.
Table 1 shows an example of a mapping table, table 1 is only used for the conversion of application quality indicators for web browsing applications associated with TCP and HTTP.
TABLE 1
Table 1 is merely an example of a mapping table, which contains network quality indicators that may be increased or decreased according to specific usage environments, such as adding cache and jitter, among other network quality indicators.
The mapping formula is used for expressing the incidence relation between the application quality index and the network quality index, and can be fitted through the modes of statistics, regression analysis and the like. The mapping formula established by using the neural network algorithm is shown as formula (1).
Wherein the content of the first and second substances,
is expressed with a natural constant e as the base
Is an exponential function of the exponent. I Xi-ciI represents the pair Xi-ciAnd (5) calculating a norm. N denotes the number of network quality indicators comprised by the plurality of network quality indicators after mapping the application quality indicator into the plurality of network quality indicators, XiRepresenting one of the plurality of network quality indicators. E.g., assume XiE { delay, jitter, bandwidth }, where N is 3, X1Time delay, X2Not trembling, X3Bandwidth. w is ai≥0，spi＞0，ci≥0。
wi、ciAnd spiIs an empirical value obtained through a plurality of simulation tests. The simulation test may be "X" in determining the current network quality indexes (i.e. formula (1))i") the applied MOS value is scored by the user (i.e.," y "in equation (1), resulting in a set of parameters consisting of the network quality index and the MOS value; repeating the above process, collecting a large amount of network quality indexes and corresponding MOS values under the condition that the same application uses the same network protocol, substituting the collected large amount of parameters into the formula (1), and fitting w which can enable the collected large amount of parameters to meet the formula (1)i、ciAnd spi。
Thus, wi、ciAnd spiIs related to the application identification of the application and the network protocol used by the application, i.e. in different mapping formulas, wi、ciAnd spiMay be different.
Optionally, the mapping request may further include attribute information of an application, taking a video application as an example, the mapping request may add the attribute information to illustrate definition of the video application, for example, the mapping request may include the following: { application identification: video; using a network protocol: TCP and HTTP; the application quality index is as follows: the MOS value is 4; the application attribute is as follows: ultra-clear }. Accordingly, an example of a mapping table associated with a video application stored in the server is shown in table 2.
TABLE 2
Step 306: and the server acquires a network quality index corresponding to the application quality index according to the matched mapping table or mapping formula, wherein the network quality index is used for realizing the application quality index when the application runs.
If the application quality index is converted according to the mapping table, the server firstly finds the corresponding mapping table according to the application identifier contained in the mapping request and the used network protocol. And then querying the entry in the mapping table according to the application quality index contained in the mapping request. If the item meeting the condition is inquired, the corresponding network quality index in the item is returned to the client, and if the item meeting the condition is not inquired, an error message is returned to the client. For example, assume the mapping request is: { application identification: video; using a network protocol: TCP and HTTP; the application quality index is as follows: the MOS value is 4; the application attribute is as follows: super-definition, the matching mapping table is table 2, and the network quality index corresponding to the application quality index is: { bandwidth > -4 megabits per second (unit: Mbps), delay <40 milliseconds (unit: ms), packet loss rate < 0.5% }.
If the application quality index is converted according to the mapping formula, the server firstly finds the corresponding mapping formula according to the application identifier contained in the mapping request and the used network protocol. Then, if the application quality index included in the mapping request is a MOS value, the MOS value is directly set as YAIIf the application quality index contained in the mapping request is not an MOS value, the application quality index is converted into a corresponding MOS value through other methods, such as a mapping table, and the converted MOS value is used as the MOS valueIs YAI. Then randomly generating network quality indexes and substituting the network quality indexes into the formula (1), and when a certain group of network quality indexes meet the requirement
The set of network quality metrics is then returned to the client.
Optionally, the mapping request may further include a constraint condition, for example, the constraint condition may include at least one of a bandwidth constraint condition, a packet loss rate constraint condition, a delay constraint condition, and a network type constraint condition (such as a fixed network or a mobile network). Accordingly, the server sends the network quality indicator included in the mapping response to the client only if the network quality indicator is determined to meet the constraint condition included in the mapping request.
For example, assuming that a video application uses network protocols TCP and HTTP, and the MOS value requirement is 4.5, while the video application knows that the latency between its video server and video terminal is 30ms, the client may add a 30ms latency constraint to the mapping request. Assuming that the mapping table queried by the server is table 2, it is found that 2 entries can satisfy the requirement that the MOS value is 4.5, which is: { bandwidth > < 4.5Mbps, delay <20ms, packet loss rate < 1.6% }, and { bandwidth > < 4.5Mbps, delay <40ms, packet loss rate < 0.4% }. But after comparing with the constraint condition of 30ms delay, the server only returns the network quality index of { bandwidth > -4.5 Mbps, delay <40ms, and packet loss rate < 0.4% } to the client.
It should be noted that, if some constraint conditions result in that the server cannot obtain an available network quality indicator to the client, the server may notify the client to add some network function modules through the mapping response to satisfy the constraint conditions. For example, assuming that the constraint condition is that the bandwidth is 15Mbps, and the server finds that the current Network bandwidth cannot meet the requirement of 18Mbps, the server may suggest to deploy a Wide Area Network (WAN) optimization device or other Network acceleration devices.
Step 307: the server sends a mapping response to the client, the mapping response including the network quality indicator.
Step 308: and after receiving the mapping response of the server, the client disconnects the network connection with the server.
It should be noted that the client may initiate multiple mapping requests to the server before disconnecting the network connection with the server. Therefore, in the system of the second form shown in fig. 2, since the client is built in the network controller, and the client built in the network controller uniformly maps the application quality indicators of the respective applications, compared with the system of the first form shown in fig. 1, the signaling interaction between the client and the server can be reduced as a whole.
The above steps 301 to 308 are the complete process of the quality index mapping protocol provided by the present application, wherein the messages from the client to the server can be realized by the customized communication messages, or by the existing protocol messages, such as HTTP protocol messages.
Subsequently, after the client acquires the network quality index corresponding to the application quality index from the mapping response, the acquired network quality index can be sent to the network controller, and the network controller configures definable functions of related network devices according to the network quality index. For example, to meet bandwidth requirements, a network controller may configure the size of a packet queue and the size of a token bucket of a network device; in order to meet the delay requirement, the network device may configure a routing table, a forwarding table, and a flow table on the network device to form a suitable forwarding path; in order to meet the requirement Of packet loss rate, the network controller may configure the priority Of Quality Of Service (QOS) Of the packets on the network device.
The present application further provides a server 400, configured to implement the function of the server in the foregoing application quality index mapping method. As shown in fig. 4, the server 400 includes a receiving unit 401, a searching unit 402, a processing unit 403, and a sending unit 404; wherein
A receiving unit 401, configured to receive a mapping request of a client, where the mapping request includes an application quality indicator configured for an application, an application identifier of the application, and a network protocol used by the application,
A searching unit 402, configured to search a matching mapping table or mapping formula according to the application identifier and the network protocol; the mapping table stores a corresponding relation between the application quality index and the network quality index of the application associated with the network protocol; the mapping formula indicates an association between the application quality indicator and a network quality indicator.
A processing unit 403, configured to obtain, according to the matched mapping table or mapping formula, a network quality indicator corresponding to the application quality indicator, where the network quality indicator is used to enable the application to implement the application quality indicator when the application runs.
A sending unit 404, configured to send a mapping response to the client, where the mapping response includes the network quality indicator, so that the client sends the network quality indicator to a network controller, so that the network controller configures a network device according to the network quality indicator.
Optionally, the application quality indicator may include at least one of: MOS value, quality class, key quality indicators of the application.
Optionally, the network quality indicator may include at least one of: bandwidth, delay, packet loss rate, buffering, and jitter.
Optionally, the number of the network quality indicators may be multiple, and the network quality indicator obtained by the processing unit 403 through a mapping formula meets the following formula requirement:
wherein, YAIRepresenting the MOS value, X, corresponding to the application quality indicatoriRepresenting one of the plurality of network quality indicators, N representing the number of network quality indicators comprised in the plurality of network quality indicators, wiIs an empirical value, w, obtained through a plurality of simulation testsi≥0；
The following formula requirements are met:
wherein, ciAnd spiIs an empirical value obtained through a plurality of simulation tests, ci≥0，spi≥0。
Optionally, the mapping request may further include at least one of the following constraints: bandwidth constraint, packet loss rate constraint, time delay constraint, network type constraint,
Correspondingly, before the sending unit 404 sends the mapping response to the client, the processing unit 403 is further configured to: determining that the network quality indicator satisfies a constraint included in the mapping request.
For details that are not described in the present embodiment, reference may be made to the description of the server in the application quality indicator mapping method shown in fig. 3, which is not described herein again.
Based on the application quality index mapping method provided above, the present application further provides a server 500, as shown in fig. 5, the server 500 includes a receiver 501, a processor 502, and a transmitter 503, where the receiver 501, the processor 502, and the transmitter 503 are connected to each other through a bus 504.
The receiver 501 is configured to receive a mapping request of a client, where the mapping request includes an application quality indicator configured for an application, an application identifier of the application, and a network protocol used by the application,
The processor 502 is configured to find a matching mapping table or mapping formula according to the application identifier and the network protocol; the mapping table stores a corresponding relation between the application quality index and the network quality index of the application associated with the network protocol; the mapping formula indicates an incidence relation between the application quality index and a network quality index; and the processor 502 obtains a network quality indicator corresponding to the application quality indicator according to the matched mapping table or mapping formula, where the network quality indicator is used to implement the application quality indicator when the application runs.
The transmitter 503 is configured to send a mapping response to the client, where the mapping response includes the network quality indicator, so that the client sends the network quality indicator to a network controller, so that the network controller configures a network device according to the network quality indicator.
The processor 502 may be a general-purpose processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; the integrated circuit may also be a Digital Signal Processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices.
When the processor 502 is a CPU, the server 500 may further include: a memory for storing a program. In particular, the program may include program code comprising computer operating instructions. The memory may include a Random Access Memory (RAM), and may further include a non-volatile memory (non-volatile memory), such as at least one disk memory. The processor 502 executes the program code stored in the memory to implement the above-described functions.
It should be noted that the receiver 501 may also perform other operations performed by the receiving unit 401 shown in fig. 4, the processor 502 may also perform other operations performed by the searching unit 402 and the processing unit 403 shown in fig. 4, and the transmitter 503 may also perform other operations performed by the transmitting unit 404 shown in fig. 4. For brevity, no further description is provided herein.
The present application further provides a client 600, configured to implement the function of the client in the foregoing application quality index mapping method. As shown in fig. 6, the client 600 includes a sending unit 601, a receiving unit 602, and an obtaining unit 603; wherein
A sending unit 601, configured to send a mapping request to a server, where the mapping request includes an application quality indicator configured for an application, an application identifier of the application, and a network protocol used by the application.
A receiving unit 602, configured to receive a mapping response returned by the server, where the mapping response includes a network quality indicator, and the network quality indicator is used to enable the application to implement the application quality indicator when the application runs.
An obtaining unit 603, configured to obtain the network quality indicator from the mapping response.
The sending unit 601 is further configured to send the network quality indicator to a network controller, so that the network controller configures a network device according to the network quality indicator.
For details that are not described in the present embodiment, reference may be made to the description of the client in the application quality indicator mapping method shown in fig. 3, which is not described herein again.
Based on the application quality index mapping method provided above, the present application further provides a client 700, as shown in fig. 7, the client 700 includes a transmitter 701, a receiver 702, and a processor 703, where the transmitter 701, the receiver 702, and the processor 703 are connected to each other through a bus 704.
The transmitter 701 is configured to send a mapping request to a server, where the mapping request includes an application quality indicator configured for an application, an application identifier of the application, and a network protocol used by the application.
The receiver 702 is configured to receive a mapping response returned by the server, where the mapping response includes a network quality indicator, and the network quality indicator is used to enable the application to implement the application quality indicator when the application runs.
The processor 703 is configured to obtain the network quality indicator from the mapping response.
The transmitter 701 is further configured to transmit the network quality indicator to a network controller, so that the network controller configures a network device according to the network quality indicator.
The processor 703 may be a general-purpose processor including a central processing unit, a network processor, etc.; but may also be a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, etc.
When the processor 703 is a CPU, the client 700 may further include: a memory for storing a program. In particular, the program may include program code comprising computer operating instructions. The memory may comprise random access memory and may also include non-volatile memory, such as at least one disk memory. The processor 703 executes the program code stored in the memory to implement the above-described functions.
It should be noted that the transmitter 701 may also perform other operations performed by the transmitting unit 601 shown in fig. 6, the receiver 702 may also perform other operations performed by the receiving unit 602 shown in fig. 6, and the processor 703 may also perform other operations performed by the obtaining unit 603 shown in fig. 6. For brevity, no further description is provided herein.
In summary, by using the technical solution provided by the present application, mapping from the application quality indicator to the network quality indicator can be completed, so that the definable function of the network device can be configured according to the network quality indicator corresponding to the application quality indicator, and the problem of mismatch between the application quality indicator of the application and the open capability provided by the network device is solved.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, 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, 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.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (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 apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. 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 invention.
Claims (12)
1. An application quality index mapping method is characterized by comprising the following steps:
the method comprises the steps that a server receives a mapping request of a client, wherein the mapping request comprises an application quality index configured for an application, an application identifier of the application and a network protocol used by the application; the application quality index refers to the requirement and measurement of application quality; the server finds a matched mapping table or mapping formula according to the application identifier and the network protocol; the mapping table stores a corresponding relation between the application quality index and the network quality index of the application associated with the network protocol; the mapping formula indicates an incidence relation between the application quality index and a network quality index; the network quality index is an index for measuring network performance;
the server acquires a network quality index corresponding to the application quality index according to the matched mapping table or mapping formula, wherein the network quality index is used for realizing the application quality index when the application runs;
the server sends a mapping response to the client, wherein the mapping response comprises the network quality index, so that the client sends the network quality index to a network controller, and the network controller configures network equipment according to the network quality index.
2. The method of claim 1, wherein the application quality indicator comprises at least one of:
mean opinion score MOS value, quality class, key quality indicators of the application.
3. The method of claim 1 or 2, wherein the network quality indicator comprises at least one of:
bandwidth, delay, packet loss rate, buffering, and jitter.
4. The method of any of claims 1-2, wherein the network quality indicator is a plurality,
the network quality index obtained by the mapping formula meets the following formula requirements:
wherein, YAIRepresenting the MOS value, X, corresponding to the application quality indicatoriRepresenting one of the plurality of network quality indicators, N representing the number of network quality indicators comprised in the plurality of network quality indicators, wiIs an empirical value, w, obtained through a plurality of simulation testsi≥0；
wherein, ciAnd spiIs an empirical value obtained through a plurality of simulation tests, ci≥0，spi≥0。
5. The method of any of claims 1-2, wherein the mapping request further includes at least one of the following constraints:
bandwidth constraint conditions, packet loss rate constraint conditions, time delay constraint conditions and network type constraint conditions;
before sending the mapping response to the client, the method further includes:
the server determines that the network quality indicator satisfies a constraint included in the mapping request.
6. An application quality index mapping method is characterized by comprising the following steps:
a client sends a mapping request to a server, wherein the mapping request comprises an application quality index configured for an application, an application identifier of the application and a network protocol used by the application; the application quality index refers to the requirement and measurement of application quality; the client receives a mapping response returned by the server, wherein the mapping response comprises a network quality index, and the network quality index is used for enabling the application to realize the application quality index when the application runs; the network quality index is an index for measuring network performance; the client acquires the network quality index from the mapping response;
and the client sends the network quality index to a network controller so that the network controller configures network equipment according to the network quality index.
7. A server, comprising:
the mapping method comprises a receiving unit, a sending unit and a receiving unit, wherein the receiving unit is used for receiving a mapping request of a client, and the mapping request comprises an application quality index configured for an application, an application identifier of the application and a network protocol used by the application; the application quality index refers to the requirement and measurement of application quality;
the searching unit is used for searching the matched mapping table or mapping formula according to the application identifier and the network protocol; the mapping table stores a corresponding relation between the application quality index and the network quality index of the application associated with the network protocol; the mapping formula indicates an incidence relation between the application quality index and a network quality index; the network quality index is an index for measuring network performance;
a processing unit, configured to obtain, according to the matched mapping table or mapping formula, a network quality indicator corresponding to the application quality indicator, where the network quality indicator is used to implement the application quality indicator when the application runs;
a sending unit, configured to send a mapping response to the client, where the mapping response includes the network quality indicator, so that the client sends the network quality indicator to a network controller, so that the network controller configures a network device according to the network quality indicator.
8. The server of claim 7, wherein the application quality indicator comprises at least one of:
mean opinion score MOS value, quality class, key quality indicators of the application.
9. The server according to claim 7 or 8, wherein the network quality indicator comprises at least one of:
bandwidth, delay, packet loss rate, buffering, and jitter.
10. The server according to any one of claims 7-8, wherein the network quality indicator is a plurality,
the network quality index obtained by the processing unit through the mapping formula meets the following formula requirements:
wherein, YAIRepresenting the MOS value, X, corresponding to the application quality indicatoriRepresenting one of the plurality of network quality indicators, N representing the number of network quality indicators comprised in the plurality of network quality indicators, wiIs an empirical value, w, obtained through a plurality of simulation testsi≥0；
wherein, ciAnd spiIs an empirical value obtained through a plurality of simulation tests, ci≥0，spi≥0。
11. The server according to any of claims 7-8, wherein the mapping request further comprises at least one of the following constraints:
bandwidth constraint conditions, packet loss rate constraint conditions, time delay constraint conditions and network type constraint conditions;
before the sending unit sends the mapping response to the client, the processing unit is further configured to:
determining that the network quality indicator satisfies a constraint included in the mapping request.
12. A client, comprising:
a sending unit, configured to send a mapping request to a server, where the mapping request includes an application quality indicator configured for an application, an application identifier of the application, and a network protocol used by the application; the application quality index refers to the requirement and measurement of application quality;
a receiving unit, configured to receive a mapping response returned by the server, where the mapping response includes a network quality indicator, and the network quality indicator is used to enable the application to implement the application quality indicator when the application runs; the network quality index is an index for measuring network performance;
an obtaining unit, configured to obtain the network quality indicator from the mapping response;
the sending unit is further configured to send the network quality indicator to a network controller, so that the network controller configures a network device according to the network quality indicator.
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| CN102291763B (en) * | 2011-07-22 | 2014-06-25 | 电信科学技术研究院 | Method, system and equipment for determining mapping relation and reporting quality of service (QoS) measurement information |
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