CN112737884B - Method for forwarding data and detecting network performance and related device - Google Patents
Method for forwarding data and detecting network performance and related device Download PDFInfo
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- H—ELECTRICITY
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- H04L43/00—Arrangements for monitoring or testing data switching networks
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Abstract
The method and the device for detecting network performance receive a first data packet carrying a first identifier, distribute a second identifier to the first data packet according to the first identifier and the number of data packets discarded by route selection to obtain a second data packet, and forward the second data packet carrying the first identifier and the second identifier. Correspondingly, the method and the device for detecting network performance disclosed by the invention are used for determining the number of the data packets sent by the sending terminal and the number of the data packets lost in the network transmission process according to the first identification and the second identification of the received data packets after receiving the data packets carrying the first identification and the second identification, and determining the parameter information for representing the network performance according to the number of the data packets sent by the sending terminal and the number of the data packets lost in the network transmission process. The parameter information is determined according to the first identifier and the second identifier together, so that the data packet discarded by route selection can be excluded from transmission packet loss, and the accuracy of the detection result can be improved.
Description
Technical Field
The present disclosure relates to the field of network communication technologies, and in particular, to a method for forwarding data and detecting network performance, and a related device.
Background
The network packet loss rate is one of the parameters for evaluating the network performance. The network packet loss rate can be used for detecting the network condition on one hand, and on the other hand, different error correction schemes can be selected according to different network packet loss rates, and the redundant information is used for resisting the network packet loss so as to obtain better data transmission performance.
In the related art, the packet loss rate in the network is usually determined according to the number of data packets sent by a sending end and the number of data packets received by a receiving end, and for a multi-user video, the calculation of the packet loss rate is not accurate enough, which further causes the detection of the network performance to be inaccurate.
Disclosure of Invention
The present disclosure provides a method, an apparatus, an electronic device, and a computer-readable storage medium for forwarding data and detecting network performance, so as to at least solve the problem of improving the detection accuracy of network performance. The technical scheme of the disclosure is as follows:
according to a first aspect of the embodiments of the present disclosure, a data forwarding method is provided, which is applied to a data packet forwarding device, and the method includes:
receiving a first data packet carrying a first identifier, wherein the first identifier comprises first sequencing information indicating sequencing of the first data packet in a data packet sent by a sending terminal;
according to the first identification and the number of the data packets discarded by the route selection, distributing a second identification for the first data packet to obtain a second data packet comprising second sequencing information, wherein the number of the data packets discarded by the route selection is the number of the data packets discarded by the data packet forwarding equipment when the data packets sent by the sending terminal are subjected to the route selection;
and forwarding the second data packet carrying the first identifier and the second identifier, so that the data packet receiving end detects the performance of the data packet transmission network according to the first identifier and the second identifier.
Optionally, the allocating, according to the first identifier and the number of the packets discarded by the routing, a second identifier to the first packet to obtain a second packet including second ordering information includes:
and when the second identifier is allocated to the first data packet, acquiring the accumulated number of the data packets discarded by the current route selection of the sending terminal, and allocating the second identifier to the first data packet according to the first identifier and the accumulated number of the data packets discarded by the current route selection.
Optionally, the allocating the second identifier to the first packet according to the first identifier and the cumulative number of packets discarded by the current route includes:
and determining the second sequencing information according to the first sequencing information and the accumulated number included in the first identifier, and allocating the second identifier to the first data packet according to the second sequencing information.
Optionally, when the number of the packets discarded by the routing is 0, the first ordering information is the same as the second ordering information.
Optionally, the allocating the second identifier to the first packet according to the first identifier and the cumulative number of packets discarded by the current route includes:
determining the second sorting information according to the difference value between the first sorting information and the accumulated number included in the first identifier;
and distributing the second identifier for the first data packet according to the second sequencing information and the identifier of the data packet forwarding equipment.
According to a second aspect of the embodiments of the present disclosure, there is provided a method for detecting network performance, which is applied to a receiving terminal of a data packet, the method including:
receiving a data packet carrying a first identifier and a second identifier, wherein the first identifier comprises first ordering information indicating ordering of the data packet in the data packet sent by a sending terminal, and the second identifier comprises second ordering information, and the second identifier is determined according to the first identifier and the number of the data packets discarded by routing; the number of the data packets discarded by the route selection is the number of the data packets discarded by the data packet forwarding equipment when the data packets sent by the sending terminal are subjected to the route selection;
determining the number of data packets sent by the sending terminal and the number of data packets lost in the network transmission process according to the first identifier and the second identifier of the received data packets, wherein the number of data packets lost in the network transmission process does not include the number of data packets discarded by the data packet forwarding equipment during route selection;
and determining parameter information for representing the network performance according to the number of the data packets sent by the sending terminal and the number of the data packets lost in the network transmission process.
Optionally, the parameter information of the network performance is a packet loss rate of the network.
Optionally, the determining, according to the first identifier and the second identifier of the received data packet, the number of data packets sent by the sending terminal and the number of data packets lost in the network transmission process includes:
determining the number of data packets sent by the sending terminal according to the first sequencing information in the first identifier of the received data packets;
and determining the number of lost data packets in the network transmission process according to the first sequencing information included in the first identifier and the second sequencing information included in the second identifier.
Optionally, the determining, according to the first ordering information included in the first identifier and the second ordering information included in the second identifier, the number of data packets lost in the network transmission process includes:
and determining the number of packet losses from the sending terminal to the data packet forwarding device, the number of packet losses from the data packet forwarding device to the receiving terminal, and the number of packet losses from the sending terminal to the receiving terminal according to the first sequencing information included in the first identifier and the second sequencing information included in the second identifier.
Optionally, the determining parameter information for indicating the network performance includes:
determining parameter information for indicating the performance of the network between the transmitting terminal and the packet forwarding device, parameter information for indicating the performance of the network between the packet forwarding device and the receiving terminal, and parameter information for indicating the performance of the network between the transmitting terminal and the receiving terminal.
According to a third aspect of the embodiments of the present disclosure, there is provided a data forwarding apparatus, applied to a packet forwarding device, including:
the receiving module is configured to receive a first data packet carrying a first identifier; the first identifier comprises first ordering information indicating an ordering of the first data packet in a data packet transmitted by a transmitting terminal;
the distribution module is configured to distribute a second identifier for the first data packet according to the first identifier and the number of the data packets discarded by the route selection to obtain a second data packet comprising second sequencing information, wherein the number of the data packets discarded by the route selection is the number of the data packets discarded by the data packet forwarding device when the data packets sent by the sending terminal are subjected to the route selection;
and the forwarding module is configured to forward a second data packet carrying the first identifier and the second identifier, so that a data packet receiving end detects the performance of the data packet transmission network according to the first identifier and the second identifier.
Optionally, the allocating module is configured to allocate a second identifier to the first packet according to the first identifier and the number of packets discarded by the routing to obtain a second packet including second ordering information, including:
the distribution module is configured to obtain the accumulated number of the data packets discarded by the current route of the sending terminal when the second identifier is distributed to the first data packet, and distribute the second identifier to the first data packet according to the first identifier and the accumulated number of the data packets discarded by the current route.
Optionally, the allocating module is configured to allocate the second identifier to the first packet according to the first identifier and the accumulated number of packets discarded by the current route, and includes:
the allocation module is configured to determine the second sorting information according to the first sorting information and the accumulated number included in the first identifier, and allocate the second identifier to the first data packet according to the second sorting information.
Optionally, when the number of the packets discarded by the routing is 0, the first ordering information is the same as the second ordering information.
Optionally, the allocating module is configured to allocate the second identifier to the first packet according to the first identifier and the accumulated number of packets discarded by the current route, and includes:
the distribution module is configured to determine the second sorting information according to a difference value between the first sorting information included in the first identifier and the accumulated number; and distributing the second identifier for the first data packet according to the second sequencing information and the identifier of the data packet forwarding equipment.
According to a fourth aspect of the embodiments of the present disclosure, there is provided an apparatus for detecting network performance, which is applied to a receiving terminal of a data packet, including:
a receiving module configured to receive a data packet carrying a first identifier and a second identifier, where the first identifier includes first ordering information indicating an ordering of the data packet in a data packet sent by a sending terminal; the second identifier comprises second sequencing information and is determined according to the first identifier and the number of data packets discarded by the routing; the number of the data packets discarded by the route selection is the number of the data packets discarded by the data packet forwarding equipment when the data packets sent by the sending terminal are subjected to the route selection;
a first detection module, configured to determine, according to the first identifier and the second identifier of the received data packet, the number of data packets sent by the sending terminal and the number of data packets lost in a network transmission process, where the number of data packets lost in the network transmission process does not include the number of data packets discarded by the data packet forwarding device when performing routing;
and the second detection module is configured to determine parameter information for representing the network performance according to the number of the data packets sent by the sending terminal and the number of the data packets lost in the network transmission process.
Optionally, the parameter information of the network performance is a packet loss rate of the network.
Optionally, the determining, by the first detection module, the number of data packets sent by the sending terminal and the number of data packets lost in a network transmission process according to the first identifier and the second identifier of the received data packets includes:
the first detection module is configured to determine the number of data packets sent by the sending terminal according to the first sequencing information in the first identifier of the received data packets; and determining the number of lost data packets in the network transmission process according to the first sequencing information included in the first identifier and the second sequencing information included in the second identifier.
Optionally, the determining, by the first detection module, the number of lost data packets in the network transmission process according to the first ordering information included in the first identifier and the second ordering information included in the second identifier includes:
the first detection module is configured to determine, according to the first ordering information included in the first identifier and the second ordering information included in the second identifier, the number of packet losses from the sending terminal to the packet forwarding device, the number of packet losses from the packet forwarding device to the receiving terminal, and the number of packet losses from the sending terminal to the receiving terminal.
Optionally, the second detection module is configured to determine parameter information representing the network performance, including:
the second detection module is configured to determine parameter information representing performance of a network between the transmitting terminal and the packet forwarding device, parameter information representing performance of a network between the packet forwarding device and the receiving terminal, and parameter information representing performance of a network between the transmitting terminal and the receiving terminal.
According to a fourth aspect of the embodiments of the present disclosure, there is provided an electronic apparatus including: a processor;
a memory for storing the processor-executable instructions;
wherein the processor is configured to execute the instructions to implement the above-described method.
According to a fifth aspect of embodiments of the present disclosure, there is provided a computer-readable storage medium, wherein instructions, when executed by a processor of an electronic device, enable the electronic device to perform the method disclosed in the first or second aspect.
According to a sixth aspect of embodiments of the present disclosure, there is provided a computer program product comprising a computer program which, when executed by a processor, implements the method disclosed in the first or second aspect.
The technical scheme provided by the embodiment of the disclosure at least brings the following beneficial effects:
the method and the device for detecting network performance receive a first data packet carrying a first identifier, allocate a second identifier to the first data packet to obtain a second data packet according to the first identifier and the number of data packets discarded by a route selection, and forward the second data packet carrying the first identifier and the second identifier, wherein the number of data packets discarded by the route selection is the number of data packets discarded when the data packets sent by a sending terminal are subjected to route selection by a data packet forwarding device. Correspondingly, the method and the device for detecting network performance disclosed by the invention are used for determining the number of the data packets sent by the sending terminal and the number of the data packets lost in the network transmission process according to the first identification and the second identification of the received data packets after receiving the data packets carrying the first identification and the second identification, and determining the parameter information for representing the network performance according to the number of the data packets sent by the sending terminal and the number of the data packets lost in the network transmission process. The second identifier can represent the number of the data packets discarded by the routing, so that the parameter information is determined according to the first identifier and the second identifier together, and the data packets discarded by the routing can be excluded from the transmission packet loss, so that the accuracy of the detection result can be improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure and are not to be construed as limiting the disclosure.
Fig. 1 is a flow chart illustrating a method of forwarding data in accordance with an example embodiment;
FIG. 2 (a) is an exemplary diagram of packet loss;
fig. 2 (b) is an exemplary diagram of packet loss due to poor network performance;
fig. 2 (c) is an exemplary diagram of no packet loss;
FIG. 3 is a flow chart illustrating yet another method of detecting network performance in accordance with an exemplary embodiment;
FIG. 4 is a diagram showing an example of routing of each slot in the case of a plurality of transmitting terminals;
FIG. 5 is a flow chart illustrating a method of detecting network performance in accordance with an exemplary embodiment;
fig. 6 is an exemplary diagram of packet loss for terminal a;
FIG. 7 is a block diagram illustrating a forwarding device for data in accordance with an exemplary embodiment;
FIG. 8 is a block diagram illustrating another apparatus for detecting network performance in accordance with an exemplary embodiment;
FIG. 9 is a block diagram of an electronic device shown in accordance with an example embodiment.
Detailed Description
In order to make the technical solutions of the present disclosure better understood, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings.
It should be noted that the terms "first," "second," and the like in the description and claims of the present disclosure and in the foregoing drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the disclosure described herein are capable of operation in other sequences than those illustrated or described herein. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the disclosure, as detailed in the appended claims.
The architecture to which the disclosed solution is adapted includes: the sending terminal sends a data packet, the data packet forwarding device forwards the data packet according to a preset rule, such as a routing rule, after receiving the data packet sent by the sending terminal, and the receiving terminal receives the data packet forwarded by the data packet forwarding device.
The data packets may include, but are not limited to: a video file data package and an audio file data package.
The number of transmitting terminals is at least one, and the number of receiving terminals is also at least one.
The architecture is applicable to a video conference, that is, at least one terminal sends a video data packet to a packet forwarding device, and the packet forwarding device forwards the selected video data packet to at least one terminal through routing in each time slot.
Specifically, the receiving terminal and the sending terminal may be devices such as a mobile terminal, a desktop, a tablet computer, and the like, and the packet forwarding device may be an MCU and the like, which are not limited herein.
Fig. 1 is a flowchart illustrating a data forwarding method according to an exemplary embodiment, applied to a data packet forwarding device, as shown in fig. 1, including the following steps:
s101: and receiving a first data packet carrying a first identifier.
The first identifier includes first ordering information, and the first ordering information is used to indicate ordering of the first data packet in the data packet sent by the sending terminal.
In practical applications, in order to distinguish different sending terminals, optionally, information of the sending terminal may also be carried in the data packet.
For example, taking the data packets sent by terminal a shown in fig. 2 (a) as an example, each data packet includes the identifier of terminal a to distinguish the data packets sent by other terminals, that is: the first identifier in any data packet sent by terminal a includes first ordering information, e.g., 1, 2, 3, 4, 5, configured by terminal a for the data packet and indicating ordering. In addition, the first identifier may also include an identifier a of the terminal a, that is, first ordering information beginning with a and following a packet, such as a1, a2, a3, a4 and a5 shown in fig. 2 (a), which are all packets sent by the terminal a.
It should be understood that the first packet is any packet transmitted by the transmitting terminal, and the "first" is used only for descriptive distinction and is not limited to being ordered as the first.
S102: and distributing a second identifier for the first data packet according to the first identifier and the number of the data packets discarded by the route selection to obtain a second data packet comprising second sequencing information.
The number of the data packets discarded by the routing is the number of the data packets discarded by the data packet forwarding device when the data packets sent by the sending terminal are routed by the data packet forwarding device.
Specifically, second ordering information in the second identifier is determined according to the first identifier and the number of the data packets discarded by the route selection, and the second identifier is written into the first data packet to obtain a second data packet.
Further, the packet forwarding device may configure a count value for each sending terminal in advance, where the count value is used to record the number of packets discarded by each terminal by the route selection. That is, the count value of any one of the transmission terminals is used to record the number of packets that the transmission terminal has discarded by routing. The initial value of the count value is 0.
In this embodiment, the routing discard refers to that the packet forwarding device does not forward (i.e., discards) the packet according to a preset routing rule. In the prior art, a packet forwarding device is connected to multiple transmitting terminals, and a link from each transmitting terminal to the packet forwarding device is called a branch. The packet forwarding device calculates the energy value of each branch, forwards the packet on the branch with higher energy value, and discards the packet on the branch with lower energy value. The dropped packets in this case are called route-dropped packets. It is understood that the routing rule set according to the energy is only an example, and other routing rules in the prior art can be adopted, and will not be described herein.
Assuming that the preset count value for terminal a is denoted as DropNum, and taking fig. 2 (a) as an example, after receiving the data packet sent by terminal a, the MCU routes and discards a4, and DropNum =1.
It should be noted that, since the data forwarding apparatus controls forwarding of packets of all connected terminals, for each packet of each transmitting terminal, the count value of the transmitting terminal is updated according to the total accumulated number of packets discarded by routing for the transmitting terminal.
Specifically, when the second identifier is allocated to the first data packet, the cumulative number of data packets discarded by the current route selection of the sending terminal is obtained, and the second identifier is allocated to the first data packet according to the first identifier and the cumulative number of data packets discarded by the current route selection.
And further, determining second sorting information according to the first sorting information and the accumulated number included in the first identifier, and allocating a second identifier to the first data packet according to the second sorting information. One implementation manner for determining the second sorting information according to the first sorting information and the accumulated number included in the first identifier is as follows: and taking the difference between the first sorting information and the accumulated number as second sorting information. Alternatively, the second sorting information may also be a value obtained by operation according to a difference between the first sorting information and the count value, for example, a product of a difference between the first sorting information and the count value and a constant value. Alternatively, the second sorting information may also be obtained by performing other operations on the first sorting information and the count value, which is not limited herein.
The specific implementation manner of allocating the second identifier to the first data packet according to the second sorting information is as follows: and taking the second sequencing information as a second identifier of the first data packet, or taking the identifier of the data packet forwarding device and the second sequencing information as a second identifier.
Also taking fig. 2 (a) as an example, dropNum =1 of terminal a, so after terminal a is routed to discard a packet, the second ordering information of other forwarded packets is different from the first ordering information, and is the difference between the first ordering information and the count value. That is, in the data packet sent by the terminal a, after the routing discard a4 (assuming that only the routing discard a 4), the second ordering information of the forwarded data packet is the first identifier minus 1.
As can be seen from fig. 2 (a): in the 5 data packets sent by the terminal a, it is assumed that a3 is lost in the process of sending the data packets to the MCU because the network transmission performance is not good, and therefore, the data packets of the terminal a received by the MCU are: a1, a2, a4 and a5, assuming that the MCU routes and discards a4, the MCU forwards the packets of terminal a as a1, a2 and a5, in a1, a2 and a5, the identifier and the first ordering information of terminal a remain unchanged compared with those sent by terminal a, assuming that a1 and a2 are forwarded before discarding a4, and therefore, the second ordering information is the same as the first ordering information (the first identifier and the second identifier are also the same), and the second ordering information of packet a5 forwarded after discarding a4 is 5-1=4.
The difference between fig. 2 (b) and fig. 2 (a) is that the MCU does not discard the packet of terminal a in the routing process, that is, the packet of terminal a is all forwarded by the MCU, so the first ordering information and the second ordering information in the forwarded packet of terminal a are the same (the first identifier and the second identifier are also the same).
Fig. 2 (c) differs from fig. 2 (a) and fig. 2 (b) in that not only the MCU routes the packets without discarding the packets of the terminal a, but also the packets sent by the terminal a are not lost during transmission to the MCU, so that all the packets of the terminal a are received and forwarded by the MCU, and the second ordering information and the first ordering information in the forwarded packets of the terminal a are the same (the first identifier and the second identifier are also the same).
Fig. 2 (a) -2 (c) only illustrate the forwarding of the data packet sent by the terminal a and the situation of the identifier being reallocated by the MCU, and it can be understood that the second identifier of other terminals is set in the same manner as that of the terminal a, and is not described herein again.
Based on the above description, it can be understood that, for any one of the transmission terminals, when the number of packets discarded by the selection is 0, the first ordering information is the same as the second ordering information.
It should be noted that fig. 2 (a) -2 (c) illustrate a case where the second sorting information carries an identifier s before, so as to distinguish the second sorting information from the first sorting information. That is, optionally, the second identifier may further include an identifier of the packet forwarding device, so as to distinguish the second ordering information from the first ordering information. Specifically, the second ordering information and the identifier of the packet forwarding device may be used as the second identifier together, as shown in fig. 2 (a) -2 (c), s is used as the identifier of the packet forwarding device, and s is followed by the second ordering information.
Optionally, because the first identifier and the second identifier are carried in the data packet, the type identifiers of different terminals may be the same, that is, the type identifiers only indicate the second ordering information configured by the terminal for the data packet, and are not used to distinguish different terminals.
Optionally, the second identifier may not carry an identifier of the packet forwarding device. As long as the MCU and the receiving terminal have negotiated the format of the data packet in advance.
S103: and forwarding the second data packet carrying the first identifier and the second identifier, so that the data packet receiving end detects the performance of the data packet transmission network according to the first identifier and the second identifier.
A specific implementation manner of detecting, by the packet receiving end, the performance of the packet transmission network according to the first identifier and the second identifier will be described in the following embodiments.
It can be seen from the above flow and examples that, the packet forwarding device resets the identifier for the forwarded packet by counting the number of packets discarded by the routing of each terminal, so as to notify the receiving terminal of the number of packets discarded by the routing of each sending terminal through the new identifier, thereby improving the accuracy of the detection result of the receiving terminal on the network performance.
In practice, no matter the data packets are video data packets or audio data packets, the data packets have obvious time sequence, and in combination with the real-time characteristic of the video conference, the data packet forwarding device needs to forward the data packets in real time, so that both routing and forwarding have time sequence, and the flow shown in fig. 1 will be described in more detail from the time sequence point of view.
Fig. 3 is a flowchart illustrating a data forwarding method according to another exemplary embodiment, applied to a data packet forwarding device, and including the following steps:
s301: and configuring a count value for each accessed terminal, wherein the initial value of the count value is 0.
In this embodiment, the terminals may be set to correspond to the count values one to one. The initial value of each count value is 0, indicating that packet transmission has not started and there are no packets discarded by routing.
It can be understood that S301 may be executed when the whole architecture is built, when the terminal is connected to the data forwarding device, or when a part of terminals have forwarded the data packet through the data forwarding device (that is, there is already a sending terminal), and a new terminal is added. For example, the data transfer device may configure a count value for a connected terminal when each terminal is connected to the data transfer device before the video conference starts, or a new terminal may be connected to the data transfer device after the video conference starts, and the data transfer device configures a count value for the newly connected terminal. In either case, the initial value of the count value is 0.
In this embodiment, an example will be described with reference to fig. 4. Assume that terminal B (terminal id B), terminal C (terminal id C), terminal D (terminal id D), and terminal E (terminal id E) are all terminals accessed before the video conference starts, and the count value of each terminal is 0 before the video conference starts.
S302: in the t1 time slot, the data packets received by the transmitting terminal are b1, c1, d1 and e1 respectively.
That is, each sending terminal sends out a first data packet, where the data packet carries a first identifier, and because the first data packet is the first sequencing information in the first identifier may be 1.
S303: in t1 time slot, the route discards packet e1.
S304: and determining that a sending terminal of the discarded data packet is a first terminal according to the terminal identification of the data packet discarded by the route selection in the t1 time slot, and the number of the data packets discarded by the route selection in the t1 time slot of the first terminal is n.
As the above example, it is determined that the sending terminal that discards the packet E1 by the routing is the terminal E, and the number of packets discarded by the routing is 1.
S305: in the t1 time slot, the count value of the first terminal is increased by n.
In the above example, in the t1 slot, the count value of the terminal E is increased by 1, that is, updated from 0 to 1.
S306: and taking the count value m of the last time slot of the t1 time slot of the second terminal as the count value of the t1 time slot of the second terminal.
The second terminal is a sending terminal of the data packet to be forwarded in the t1 time slot. In fig. 4, the second terminals are terminal B, terminal C, and terminal D. All the three count values in the previous time slot are 0, so all the count values in the t1 time slot are 0.
S307: and forwarding the data packet of the second terminal in the t1 time slot, wherein the second sequencing information of the forwarded data packet of the second terminal is the first sequencing information minus m.
In the above example, the data packets b1, c1 and d1 are forwarded in the t1 time slot, and the second identifiers of b1, c1 and d1 are all s1.
S308: the operation of the subsequent slot is performed.
For example, in the t2 time slot, the data packets received by the terminal are b2, c2, d2 and e2, respectively. Packet d2 is routed and discarded. Similar to the t1 slot: and determining that the sending terminal of the route-selection discarded data packet D2 is the terminal D, and the number of the route-selection discarded data packets is 1. The count value of the terminal D is updated from 0 to 1 by adding 1. The count values of the other terminals remain unchanged compared to the t1 slot. And forwarding the data packets B2, C2 and E2 of the terminal B, the terminal C and the terminal E at the t2 time slot, wherein the second identifiers of the data packets B2 and C2 are s2 (the identifier of the data packet forwarding device is s, and the second ordering information is 2), and because the count value of E2 at the t1 time slot is 1, the second identifier is s1 (the identifier of the data packet forwarding device is s, and the second ordering information is 1).
It can be seen from the above flow that the data forwarding method described in this embodiment can adapt to a real-time communication scenario, and renumber the data packet according to the routing condition in the time unit specified by the communication protocol, thereby laying a foundation for the receiving terminal to accurately detect the network performance.
It should be understood that "current" in the above embodiments may be understood as a time slot in which the current time is located, i.e., a time slot being processed.
Fig. 5 is a flowchart illustrating a method for detecting network performance according to another exemplary embodiment, which is applied to a receiving terminal of a data packet, and includes the following steps:
s501: a data packet is received.
The data packet may be a data packet forwarded by a data packet forwarding device.
The data packet carries a first identifier and a second identifier. The first identifier includes first ordering information indicating an ordering of the first packet in a packet transmitted by the transmitting terminal. The second identifier comprises second ordering information, and the second ordering information is determined according to the first identifier and the number of data packets discarded by the route selection. The number of the data packets discarded by the routing is the number of the data packets discarded when the data packets sent by the sending terminal are routed by the data packet forwarding equipment.
For a setting manner and an example of the first identifier and the second identifier, reference may be made to the above embodiments, which are not described herein again.
S502: and determining the number of the data packets sent by the sending terminal and the number of the data packets lost in the network transmission process according to the first identification and the second identification of the received data packets.
The number of lost data packets in the network transmission process does not include the number of data packets discarded by the data packet forwarding device during the route selection.
Optionally, the specific implementation process of S502 is:
1. and determining the number of the data packets sent by the sending terminal according to the first sequencing information in the first identifier of the received data packets.
Specifically, a data packet sent by a target sending terminal is queried from received data packets as a target data packet, where the sending terminal is any one of the sending terminals. And obtaining the number of the data packets sent by the target terminal, namely the first number, according to the maximum value and the minimum value of the first sequencing information of the target data packet.
Taking fig. 6 as an example, assuming that the terminal B receives the first identifier and the second identifier of the data packet that is sent by the terminal a and forwarded by the MCU, as shown in fig. 6, and the terminal a is taken as a target terminal, the maximum value of the first ordering information of the target data packet is 10, and the minimum value is 1, so that the first number of the terminal a is 10-1+1=10.
Note that the first number = the maximum value of the first ranking information — the minimum value of the first ranking information +1, is merely an example of the acquisition method of the first number, and the first number may be obtained by another operation method based on the maximum value of the first ranking information of the target terminal and the minimum value of the first ranking information.
It can be understood from fig. 6 that, since the last packet a10 sent by terminal a is not dropped by the router and is not lost due to network transmission, the first number is the same as the actual number of packets sent by terminal a. However, if the packet a10 is dropped or lost by routing, the first number is not the same as the actual number of packets sent by terminal a.
2. And determining the number of the lost data packets in the network transmission process according to the number of the data packets sent by the sending terminal and the second sequencing information included in the second identifier.
Specifically, the number of data packets sent by the target terminal forwarded by the forwarding device, which is referred to as the second number for short, is obtained according to the maximum value and the minimum value of the second ordering information of the target data packet.
Also taking fig. 6 as an example, if terminal a is taken as a target terminal, the maximum value of the second sorting information of the target data packet is 8, and the minimum value is 1, so that the second number of terminal a is 8-1+1=8.
Note that the second number = the maximum value of the second ranking information — the minimum value of the second ranking information +1, is only one example of the manner of acquiring the second number, and the second number may be obtained by another operation manner based on the maximum value of the second ranking information and the minimum value of the second ranking information.
And taking the difference between the second number and the number of the data packets sent by the target terminal which are actually received as the number of the data packets of the target terminal lost in the network transmission process, and simply referred to as a third number. In the above example, the third number =8-6=2.
S503: and determining parameter information for representing the network performance according to the number of the data packets sent by the sending terminal and the number of the data packets lost in the network transmission process.
Specifically, the parameter information indicating the network performance may be a packet loss rate, where the packet loss rate is a percentage of the third number to the first number. In the above example, the packet loss rate is 2/10 × 100% =20%.
As can be seen from fig. 6, the total number of data packets sent by the terminal a is 10, and 2 data packets are routed and discarded, because 2 data packets are lost due to network transmission, the packet loss rate is the same as the packet loss rate determined according to the first number and the third number.
As can be seen from the process shown in fig. 5, the receiving terminal can obtain an accurate numerical value of the network performance parameter according to the first identifier and the second identifier in the received data packet, so as to avoid marking the routing packet loss as the network transmission packet loss.
It can be understood that the number of packet losses in the network transmission process obtained by the method in the above embodiment, that is, the third number, is the number of packet losses from the sending terminal to the receiving terminal. In addition, since the transmission from the sending terminal to the packet forwarding device does not involve routing, the number of packet losses from the sending terminal to the packet forwarding device can be determined according to the first ordering information and the number of packets sent by the sending terminal and actually received by the packet forwarding device. And the number of the packet losses from the data packet forwarding device to the receiving terminal can be determined according to the number of the packet losses from the sending terminal to the receiving terminal and the number of the packet losses from the sending terminal to the data packet forwarding device. According to the principle, the determined packet loss numbers are all packet loss numbers caused by network faults, and the number of data packets discarded by route selection is not included.
Similarly, the parameter information obtained by the above-described procedure is parameter information indicating the performance of the network between the transmitting terminal and the receiving terminal. In addition, since both the packet forwarding device and the receiving terminal can know the number of packets actually received from the transmitting terminal, it is possible to determine, in combination with the number of packets lost, parameter information indicating the performance of the network between the transmitting terminal and the packet forwarding device and parameter information indicating the performance of the network between the packet forwarding device and the receiving terminal.
Fig. 7 is a block diagram illustrating a forwarding device for data according to an example embodiment. The apparatus can be applied to a packet forwarding device, and includes a receiving module 701, an allocating module 702, and a forwarding module 703.
A receiving module 701 configured to receive a first data packet carrying a first identifier; the first identifier includes first ordering information indicating an ordering of the first packet in a packet transmitted by a transmitting terminal.
An allocating module 702, configured to allocate a second identifier to the first data packet according to the first identifier and the number of data packets discarded by the routing to obtain a second data packet including second ordering information, where the number of data packets discarded by the routing is the number of data packets discarded by the data packet forwarding device when the data packet forwarding device routes the data packet sent by the sending terminal.
A forwarding module 703 configured to forward a second data packet carrying the first identifier and the second identifier, so that a data packet receiving end detects the performance of the data packet transmission network according to the first identifier and the second identifier.
Optionally, the allocating module is configured to allocate a second identifier to the first packet according to the first identifier and the number of packets discarded by the routing to obtain a second packet including second ordering information, including:
the distribution module is configured to obtain the accumulated number of the data packets discarded by the current routing of the sending terminal when distributing the second identifier for the first data packet, and distribute the second identifier for the first data packet according to the first identifier and the accumulated number of the data packets discarded by the current routing.
Optionally, the allocating module is configured to allocate the second identifier to the first packet according to the first identifier and the accumulated number of packets discarded by the current route, and includes:
the allocation module is configured to determine the second sorting information according to the first sorting information and the accumulated number included in the first identifier, and allocate the second identifier to the first data packet according to the second sorting information.
Optionally, when the number of the packets discarded by the routing is 0, the first ordering information is the same as the second ordering information.
Optionally, the allocating module is configured to allocate the second identifier to the first packet according to the first identifier and the cumulative number of packets discarded by the current route, and includes:
the distribution module is configured to determine the second sorting information according to a difference value between the first sorting information included in the first identifier and the accumulated number; and distributing the second identifier for the first data packet according to the second sequencing information and the identifier of the data packet forwarding equipment.
With regard to the data forwarding apparatus in the above embodiments, the specific manner in which each module performs operations has been described in detail in the embodiments related to the method, and will not be elaborated here.
Fig. 8 is a diagram illustrating an apparatus for detecting network performance, which is applied to a receiving terminal of a data packet, according to an exemplary embodiment, and includes a receiving module 801, a first detecting module 802, and a second detecting module 803.
A receiving module 801, configured to receive a data packet carrying a first identifier and a second identifier, where the first identifier includes first ordering information indicating an ordering of the data packet in a data packet sent by a sending terminal; the second identifier comprises second sequencing information and is determined according to the first identifier and the number of data packets discarded by the routing; the number of the data packets discarded by the route selection is the number of the data packets discarded by the data packet forwarding device when the data packets sent by the sending terminal are subjected to the route selection.
A first detecting module 802, configured to determine, according to the first identifier and the second identifier of the received data packet, the number of data packets sent by the sending terminal and the number of data packets lost in a network transmission process, where the number of data packets lost in the network transmission process does not include the number of data packets discarded by the data packet forwarding device during routing.
A second detecting module 803, configured to determine parameter information used for representing the network performance according to the number of data packets sent by the sending terminal and the number of data packets lost in the network transmission process.
Optionally, the parameter information of the network performance is a packet loss rate of the network.
Optionally, the determining, by the first detection module, the number of data packets sent by the sending terminal and the number of data packets lost in a network transmission process according to the first identifier and the second identifier of the received data packets includes:
the first detection module is configured to determine the number of data packets sent by the sending terminal according to the first sequencing information in the first identifier of the received data packets; and determining the number of lost data packets in the network transmission process according to the first sequencing information included in the first identifier and the second sequencing information included in the second identifier.
Optionally, the determining, by the first detection module, the number of lost data packets in the network transmission process according to the first ordering information included in the first identifier and the second ordering information included in the second identifier includes:
the first detection module is configured to determine, according to the first ordering information included in the first identifier and the second ordering information included in the second identifier, the number of packet losses from the sending terminal to the packet forwarding device, the number of packet losses from the packet forwarding device to the receiving terminal, and the number of packet losses from the sending terminal to the receiving terminal.
Optionally, the second detection module is configured to determine parameter information representing the network performance, including:
the second detection module is configured to determine parameter information representing performance of a network between the transmission terminal and the packet forwarding device, parameter information representing performance of a network between the packet forwarding device and the reception terminal, and parameter information representing performance of a network between the transmission terminal and the reception terminal.
With regard to the apparatus for detecting network performance in the above embodiments, the specific manner in which each module performs operations has been described in detail in the embodiments related to the method, and will not be elaborated herein.
Fig. 9 shows a hardware structure block diagram of an electronic device, which may include: a processor 1, a communication interface 2, a memory 3 and a communication bus 4;
in the embodiment of the application, the number of the processor 1, the communication interface 2, the memory 3 and the communication bus 4 is at least one, and the processor 1, the communication interface 2 and the memory 3 complete mutual communication through the communication bus 4;
the processor 1 may be a central processing unit CPU, or an Application Specific Integrated Circuit ASIC (Application Specific Integrated Circuit), or one or more Integrated circuits configured to implement embodiments of the present invention, etc.;
the memory 3 may include a high-speed RAM memory, and may further include a non-volatile memory (non-volatile memory) or the like, such as at least one disk memory;
wherein the memory stores executable instructions and the processor is configured to execute the instructions to implement the methods described in the above embodiments. Optionally, the refinement and extension functions of the instructions may be as described above.
In an exemplary embodiment, there is also provided a computer readable storage medium comprising instructions, such as the memory 3 comprising instructions, executable by the processor 1 of the electronic device to perform the above method. Alternatively, the computer readable storage medium may be a non-transitory computer readable storage medium, for example, which may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
In an exemplary embodiment, a computer program product is also provided, comprising a computer program which, when executed by a processor, implements the method of the above-described embodiment.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (22)
1. A data forwarding method is applied to a data packet forwarding device, and the method comprises the following steps:
receiving a first data packet carrying a first identifier, wherein the first identifier comprises first ordering information indicating ordering of the first data packet in a data packet sent by a sending terminal;
according to the first identification and the number of the data packets discarded by the route selection, distributing a second identification for the first data packet to obtain a second data packet comprising second sequencing information, wherein the number of the data packets discarded by the route selection is the number of the data packets discarded when the data packets sent by the sending terminal are routed by the data packet forwarding equipment;
and forwarding the second data packet carrying the first identifier and the second identifier, so that the data packet receiving end detects the performance of the data packet transmission network according to the first identifier and the second identifier.
2. The method of claim 1, wherein said assigning a second identifier to the first packet according to the first identifier and the number of packets discarded by routing to obtain a second packet comprising second ordering information comprises:
and when the second identifier is allocated to the first data packet, acquiring the accumulated number of the data packets discarded by the current route selection of the sending terminal, and allocating the second identifier to the first data packet according to the first identifier and the accumulated number of the data packets discarded by the current route selection.
3. The method of claim 2, wherein the assigning the second identifier to the first packet according to the first identifier and the cumulative number of packets discarded by the current route comprises:
and determining the second sequencing information according to the first sequencing information and the accumulated number included in the first identifier, and allocating the second identifier to the first data packet according to the second sequencing information.
4. The method according to any of claims 1-3, wherein the first ordering information is the same as the second ordering information when the number of dropped packets by the routing is 0.
5. The method of claim 2, wherein said assigning the second identifier to the first packet according to the first identifier and the cumulative number of packets discarded by the current route comprises:
determining the second sorting information according to the difference value between the first sorting information and the accumulated number included in the first identifier;
and distributing the second identifier for the first data packet according to the second sequencing information and the identifier of the data packet forwarding equipment.
6. A method for detecting network performance, applied to a receiving terminal of a data packet, the method comprising:
receiving a data packet carrying a first identifier and a second identifier, wherein the first identifier comprises first ordering information indicating ordering of the data packet in the data packet sent by a sending terminal, and the second identifier comprises second ordering information, and the second identifier is determined according to the first identifier and the number of the data packets discarded by routing; the number of the data packets discarded by the route selection is the number of the data packets discarded by the data packet forwarding equipment when the data packets sent by the sending terminal are subjected to the route selection;
determining the number of data packets sent by the sending terminal and the number of data packets lost in the network transmission process according to the first identifier and the second identifier of the received data packets, wherein the number of data packets lost in the network transmission process does not include the number of data packets discarded by the data packet forwarding equipment during route selection;
and determining parameter information for representing the network performance according to the number of the data packets sent by the sending terminal and the number of the data packets lost in the network transmission process.
7. The method according to claim 6, wherein the parameter information of the network performance is a packet loss rate of the network.
8. The method according to any one of claims 6 to 7, wherein the determining the number of data packets sent by the sending terminal and the number of data packets lost during network transmission according to the first identifier and the second identifier of the received data packets comprises:
determining the number of data packets sent by the sending terminal according to the first sequencing information in the first identifier of the received data packets;
and determining the number of lost data packets in the network transmission process according to the first sequencing information included in the first identifier and the second sequencing information included in the second identifier.
9. The method of claim 8, wherein the determining the number of data packets lost during the network transmission according to the first ordering information included in the first identifier and the second ordering information included in the second identifier comprises:
and determining the number of packet losses from the sending terminal to the data packet forwarding device, the number of packet losses from the data packet forwarding device to the receiving terminal, and the number of packet losses from the sending terminal to the receiving terminal according to the first sequencing information included in the first identifier and the second sequencing information included in the second identifier.
10. The method of claim 6, wherein the determining parameter information indicative of the network performance comprises:
determining parameter information representing performance of a network between the transmitting terminal and the packet forwarding apparatus, parameter information representing performance of a network between the packet forwarding apparatus and the receiving terminal, and parameter information representing performance of a network between the transmitting terminal and the receiving terminal.
11. A data forwarding device is applied to a data packet forwarding device, and comprises:
the receiving module is configured to receive a first data packet carrying a first identifier; the first identifier comprises first ordering information indicating an ordering of the first data packet in a data packet transmitted by a transmitting terminal;
the distribution module is configured to distribute a second identifier for the first data packet according to the first identifier and the number of the data packets discarded by the route selection to obtain a second data packet comprising second sequencing information, wherein the number of the data packets discarded by the route selection is the number of the data packets discarded by the data packet forwarding device when the data packets sent by the sending terminal are subjected to the route selection;
and the forwarding module is configured to forward a second data packet carrying the first identifier and the second identifier, so that a data packet receiving end detects the performance of the data packet transmission network according to the first identifier and the second identifier.
12. The apparatus of claim 11, wherein the allocating module is configured to allocate a second identifier for the first packet according to the first identifier and the number of packets discarded by routing to obtain a second packet including second ordering information, and comprises:
the distribution module is configured to obtain the accumulated number of the data packets discarded by the current routing of the sending terminal when distributing the second identifier for the first data packet, and distribute the second identifier for the first data packet according to the first identifier and the accumulated number of the data packets discarded by the current routing.
13. The apparatus of claim 12, wherein the assigning module is configured to assign the second identifier to the first packet according to the first identifier and the accumulated number of packets discarded by the current route, comprising:
the distribution module is configured to determine the second sorting information according to the first sorting information and the accumulated number included in the first identifier, and distribute the second identifier to the first data packet according to the second sorting information.
14. The apparatus according to any of claims 11-13, wherein the first ordering information is the same as the second ordering information when the number of packets discarded by the routing is 0.
15. The apparatus of claim 12, wherein the assigning module is configured to assign the second identifier to the first packet according to the first identifier and the accumulated number of packets discarded by the current route, comprising:
the distribution module is configured to determine the second sorting information according to a difference value between the first sorting information included in the first identifier and the accumulated number; and distributing the second identifier for the first data packet according to the second sequencing information and the identifier of the data packet forwarding equipment.
16. An apparatus for detecting network performance, wherein the apparatus is applied to a receiving terminal of a data packet, and comprises:
a receiving module configured to receive a data packet carrying a first identifier and a second identifier, where the first identifier includes first ordering information indicating an ordering of the data packet in a data packet sent by a sending terminal; the second identifier comprises second sequencing information and is determined according to the first identifier and the number of data packets discarded by the route selection; the number of the data packets discarded by the route selection is the number of the data packets discarded by the data packet forwarding equipment when the data packets sent by the sending terminal are subjected to the route selection;
a first detection module, configured to determine, according to the first identifier and the second identifier of the received data packet, the number of data packets sent by the sending terminal and the number of data packets lost in a network transmission process, where the number of data packets lost in the network transmission process does not include the number of data packets discarded by the data packet forwarding device when performing routing;
and the second detection module is configured to determine parameter information for representing the network performance according to the number of the data packets sent by the sending terminal and the number of the data packets lost in the network transmission process.
17. The apparatus according to claim 16, wherein the parameter information of the network performance is a packet loss rate of the network.
18. The apparatus according to any of claims 16-17, wherein the first detecting module is configured to determine the number of data packets sent by the sending terminal and the number of data packets lost during network transmission according to the first identifier and the second identifier of the received data packets, and includes:
the first detection module is configured to determine the number of data packets sent by the sending terminal according to the first ordering information in the first identifier of the received data packet; and determining the number of lost data packets in the network transmission process according to the first sequencing information included in the first identifier and the second sequencing information included in the second identifier.
19. The apparatus of claim 18, wherein the first detecting module is configured to determine the number of lost packets during the network transmission according to the first ordering information included in the first identifier and the second ordering information included in the second identifier, and comprises:
the first detection module is configured to determine, according to the first ordering information included in the first identifier and the second ordering information included in the second identifier, the number of packet losses from the sending terminal to the packet forwarding device, the number of packet losses from the packet forwarding device to the receiving terminal, and the number of packet losses from the sending terminal to the receiving terminal.
20. The apparatus of claim 16, wherein the second detection module is configured to determine parameter information indicative of the network performance, comprising:
the second detection module is configured to determine parameter information representing performance of a network between the transmitting terminal and the packet forwarding device, parameter information representing performance of a network between the packet forwarding device and the receiving terminal, and parameter information representing performance of a network between the transmitting terminal and the receiving terminal.
21. An electronic device, comprising:
a processor;
a memory for storing the processor-executable instructions;
wherein the processor is configured to execute the instructions to implement the method of any of claims 1-5 or 6-10.
22. A computer-readable storage medium in which instructions, when executed by a processor of an electronic device, enable the electronic device to perform the method of any of claims 1-5 or 6-10.
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