CN111328106B - Congestion control method and device - Google Patents
Congestion control method and device Download PDFInfo
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- CN111328106B CN111328106B CN202010163506.XA CN202010163506A CN111328106B CN 111328106 B CN111328106 B CN 111328106B CN 202010163506 A CN202010163506 A CN 202010163506A CN 111328106 B CN111328106 B CN 111328106B
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- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0289—Congestion control
Abstract
The invention discloses a congestion control method and a congestion control device, wherein the method comprises the following steps: receiving a marked data message sent by a user plane functional entity; determining congestion data according to the marked data message; matching reverse transmission data opposite to the transmission direction of the congestion data; adjusting the window value of the confirmation character in the reverse transmission data; and sending the adjusted window value of the confirmation character to the server so that the server reduces the speed of sending the data message according to the adjusted window value of the confirmation character. The window value of the confirmation character in the reverse transmission data is adjusted by matching the reverse transmission data with the reverse transmission direction opposite to the transmission direction of the congestion data, and the adjusted window value of the confirmation character is sent to the server corresponding to the reverse transmission data, so that congestion packet loss in a communication network is avoided, meanwhile, the server reduces the speed of sending data messages according to the adjusted window value of the confirmation character, the congestion in the communication network is reduced, and the communication quality of the communication network is improved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a congestion control method and apparatus.
Background
In The fifth generation Mobile Communication network (The 5generation Mobile Communication technology,5 g), the services of audio, video, image, etc. for large-scale users are rapidly increasing, and The explosive growth of network traffic can greatly reduce The service quality of users when accessing The internet. The network service quality cannot be improved only by increasing the bandwidth, and the network traffic is also influenced by factors such as route blocking and delay in transmission, processing capacity of a website server and the like.
When a plurality of users simultaneously download files or watch videos from the internet through a mobile communication network, the generated network flow can be increased sharply, so that the data flow passing through a User Plane Function (UPF) is increased sharply; the UPF cannot effectively distribute the service content of large data flow to each base station, the performance of the UPF is sharply reduced, the communication quality of the 5G communication network is greatly reduced, and the customer experience is influenced.
Disclosure of Invention
Therefore, the invention provides a congestion control method and a congestion control device, which are used for solving the problem that the communication quality of a communication network is reduced due to the sharp increase of the flow of a downlink network in the prior art.
In order to achieve the above object, a first aspect of the present invention provides a congestion control method, including: receiving a marked data message sent by a user plane functional entity; determining congestion data according to the marked data message; matching reverse transmission data opposite to the transmission direction of the congestion data; adjusting the window value of the confirmation character in the reverse transmission data; and sending the adjusted window value of the confirmation character to the server so that the server reduces the speed of sending the data message according to the adjusted window value of the confirmation character.
In some embodiments, the step of determining congestion data according to the marked data packet includes: if the marked data message is determined to include the congestion indication, and the congestion indication is effectively displayed, determining that the marked data message is congestion data; and displaying the congestion indication to indicate that the marked data message meets the congestion condition.
In some implementations, the congestion condition includes a number of received data packets in the receive queue being greater than a predetermined threshold for packet number, and/or a speed of receiving data packets being greater than a speed of sending data packets.
In some implementations, after the step of determining congestion data according to the marked data packet, the method further includes: and counting the number of the received congestion data.
In some implementations, the step of adjusting the window value of the acknowledgment character in the reverse transmission data includes: and adjusting the window value of the confirmation character according to the number of the congestion data.
In some implementations, the window value of the acknowledgment character is inversely proportional to the number of congestion data.
In order to achieve the above object, a second aspect of the present invention provides a congestion control device comprising: the receiving module is used for receiving a marked data message sent by the user plane functional entity; the determining module is used for determining congestion data according to the marked data message; the matching module is used for matching reverse transmission data opposite to the transmission direction of the congestion data; the adjusting module is used for adjusting the window value of the confirmation character in the reverse transmission data; and the sending module is used for sending the adjusted window value of the confirmation character to the server so that the server reduces the speed of sending the data message according to the adjusted window value of the confirmation character.
In some implementations, the determining module includes: the congestion determining submodule is used for determining the marked data message as congestion data when the marked data message is determined to include congestion indication display and the congestion indication display is effective; and displaying the congestion indication to indicate that the marked data message meets the congestion condition.
In some implementations, the apparatus further includes: and the counting module is used for counting the number of the received congestion data.
In some implementations, the adjustment module includes: and the adjusting submodule is used for adjusting the window value of the confirmation character according to the number of the congestion data.
The invention has the following advantages: determining congestion data by receiving a marking data message sent by a user plane functional entity, and processing the congestion data to ensure that no congestion packet is lost in a communication network; specifically, the reverse transmission data opposite to the transmission direction of the congestion data is matched, the window value of the confirmation character in the reverse transmission data is further adjusted, and the adjusted window value of the confirmation character is sent to the server corresponding to the reverse transmission data, so that the server reduces the speed of sending the data message according to the adjusted window value of the confirmation character. The method and the device reduce the time delay of the user for acquiring the information, slow down the congestion in the communication network, and improve the communication quality of the communication network, so that the user experience is improved.
Drawings
The accompanying drawings are included to provide a further understanding of the embodiments of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the principles of the disclosure and not to limit the disclosure. The above and other features and advantages will become more apparent to those skilled in the art by describing in detail exemplary embodiments thereof with reference to the attached drawings, in which:
fig. 1 is a flowchart of a congestion control method according to a first embodiment of the present application.
Fig. 2 is a block diagram of a congestion control apparatus according to a second embodiment of the present application.
Fig. 3 is a block diagram of a congestion control system according to a third embodiment of the present application.
Fig. 4 is a flowchart of a working method of a congestion control system in the third embodiment of the present application.
In the drawings:
201: the receiving module 202: determining module
203: the matching module 204: adjusting module
205: the sending module 301: server
302: base station 303: user plane functional entity
Detailed Description
The following detailed description of embodiments of the present application will be made with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present application, are given by way of illustration and explanation only, and are not intended to limit the present application. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising ...comprises 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
Example one
The embodiment of the application provides a congestion control method, which can be applied to a congestion control device, the congestion control device can be arranged in a base station, and the method can also be applied to the base station. As shown in fig. 1, includes:
It should be noted that the marked data message is obtained by marking, by the user plane functional entity, a data message that meets the congestion condition. Specifically, the user plane function entity establishes one or more receiving queues for each receiving port, where the receiving queues are first-in first-out queues, and when the user plane function entity receives a data packet, the data packet is configured to enter a corresponding receiving queue for queuing, and waits for further processing of the user plane function entity. When some data messages in the receiving queue meet the congestion condition, the data messages are marked. For example, a threshold value may be set in the congestion processing apparatus, when a received data packet exceeds the threshold value, it indicates that a congestion condition is satisfied, and then a congestion identifier is added to an idle position of the data packet, where the congestion identifier is used to indicate that the data packet is congestion data, and under the current condition, the user plane functional entity cannot process the marked data packets in time.
Specifically, by searching the congestion flag in the marked data packet, when the congestion flag is valid, the congestion flag indicates that the congestion data is currently marked in the data packet, otherwise, the congestion data indicates that the marked data packet is a normal data packet, and that the non-congestion data is normally processed by the user plane functional entity.
In some implementations, if it is determined that the marked data message includes a display congestion indication and the display congestion indication is valid, determining that the marked data message is congestion data; and displaying the congestion indication to indicate that the marked data message meets the congestion condition.
The congestion condition may include that the number of received data packets in the receiving queue is greater than a preset threshold of packet number, and/or the speed of receiving data packets is greater than the speed of sending data packets.
The congestion data is determined through the received marking data message sent by the user plane functional entity, more specifically, the source of the congestion data is determined, and subsequent positioning and matching of reverse transmission data opposite to the transmission direction of the congestion data are facilitated.
For example, if the transmission direction of the congestion data is the data packet transmitted by the server and forwarded by the user plane functional entity so that the base station can receive the congestion data, the reverse transmission data is the data packet transmitted by the base station and forwarded by the user plane functional entity so that the server can receive the congestion data.
Step 140, adjusting the window value of the confirmation character in the reverse transmission data.
Specifically, the adjusted window value of the acknowledgement Character may be a window value of an Acknowledgement Character (ACK) in network layer data in the congestion data, and the adjusted window value of the ACK is sent to the server, so that the server can know the current situation; when the server receives the adjusted window value of the ACK, the server knows the size of the current data cache space of the user plane functional entity, and further reduces the speed of sending the data message and the size of the data packet according to the size of the data cache space, so as to alleviate congestion in the communication network.
In this embodiment, congestion data is determined according to a marked data message sent by a receiving user plane functional entity, and the congestion data is processed to ensure that there is no congestion packet loss in a communication network; specifically, reverse transmission data opposite to the transmission direction of the congestion data is matched, so that the window value of the confirmation character in the reverse transmission data is adjusted, and the adjusted window value of the confirmation character is sent to the server corresponding to the reverse transmission data, so that the server reduces the speed of sending the data message according to the adjusted window value of the confirmation character. The time delay of the user for obtaining the information is reduced, the congestion in the communication network is relieved, the communication quality of the communication network is improved, and the user experience is improved. Another possible implementation manner is provided in this embodiment, where after step 120, the method further includes counting the number of received congestion data.
Specifically, when congestion data are received, counting is started, and the number of the received congestion data is counted, so that the congestion situation in the current network can be specifically determined, if the number of the congestion data is large, the congestion in the current network is serious, otherwise, if the number of the congestion data is small, the congestion in the current network is within an acceptable range. For example, a preset threshold may be set, and the preset threshold is compared with the number of received congestion data to specifically determine the congestion condition in the current network.
In some implementations, step 140 can be implemented by: and adjusting the window value of the confirmation character according to the number of the congestion data.
Wherein the window value of the acknowledgement character is inversely proportional to the number of congestion data.
It should be noted that the window value of the acknowledgement character may be a window value of ACK in network layer data in congestion data, for example, the window value of ACK in Transmission Control Protocol (TCP) data. It should be noted that, ACK is used to indicate that the receiving end receives the data sent by the sending end, for example, in a TCP message, one of the control bits (6 flag bits) is ACK, where an ACK is 1 to indicate that the receiving end has received the data message sent by the sending end, and an ACK is 0 to indicate that the receiving end has not received the data message sent by the sending end.
And the window value of the ACK tells the sending end that the receiving end allows the data volume sent by the sending end at present from the ACK of the data message. Since the data buffer space of the receiving end is limited or dynamically changed, the specific value of the data buffer space of the receiving end needs to be continuously updated in the acknowledgement information transmitted to the transmitting end by the receiving end, so as to ensure that the receiving end can effectively process the data. For example, when the user plane functional entity receives more data packets, because the capability of the user plane functional entity is limited, the data packets cannot be processed in time, so that congestion is caused on the user plane functional entity side, a window value of ACK for sending the data packets to a sending end (for example, a corresponding server when a user performs a download service) of the user plane functional entity needs to be adjusted, and the smaller the window value is, the smaller the data cache space of the user plane functional entity is, that is, the more the congestion data is.
In this embodiment, the window value of the ACK is adjusted according to the number of the congestion data, and then the adjusted window value of the ACK is sent to the server, so that the server can know the current network state, and according to the adjusted window value of the ACK, the speed of sending the data message by the server is reduced, the congestion condition in the communication network is reduced, the communication quality of the communication network is improved, and the user experience is improved.
Example two
Fig. 2 is a schematic structural diagram of a congestion control device according to an embodiment of the present disclosure, and for specific implementation of the congestion control device, reference may be made to the related description of the first embodiment, and repeated descriptions are omitted here. It should be noted that the specific implementation of the apparatus in this embodiment is not limited to the above embodiment, and other undescribed embodiments are also within the scope of the apparatus.
As shown in fig. 2, the congestion control apparatus specifically includes: the receiving module 201 is configured to receive a marked data packet sent by a user plane functional entity; the determining module 202 is configured to determine congestion data according to the marked data packet; the matching module 203 is used for matching reverse transmission data opposite to the transmission direction of the congestion data; the adjusting module 204 is configured to adjust a window value of an acknowledgment character in the reverse transmission data; the sending module 205 is configured to send the adjusted window value of the confirmation character to the server, so that the server reduces the speed of sending the data packet according to the adjusted window value of the confirmation character.
In some implementations, the determining module 202 includes: the congestion determining submodule is used for determining the marked data message as congestion data when the marked data message is determined to include the congestion indication and the congestion indication is effectively displayed; and displaying the congestion indication to indicate that the marked data message meets the congestion condition.
In some implementations, the congestion control device further includes: and the counting module is used for counting the number of the received congestion data.
In some implementations, the adjustment module 204 includes: and the adjusting submodule is used for adjusting the window value of the confirmation character according to the number of the congestion data.
In this embodiment, a receiving module receives a marked data message sent by a user plane functional entity, and a determining module determines congestion data according to the marked data message and processes the congestion data to ensure that no congestion packet loss exists in a communication network; specifically, the matching module matches reverse transmission data opposite to the transmission direction of the congestion data, the first adjusting module adjusts a window value of a confirmation character in the reverse transmission data, and sends the adjusted window value of the confirmation character to a server corresponding to the reverse transmission data, so that the server reduces the speed of sending a data message according to the adjusted window value of the confirmation character. The method and the device reduce the time delay of the user for acquiring the information, slow down the congestion in the communication network, and improve the communication quality of the communication network, so that the user experience is improved.
It should be understood that the present embodiment is an apparatus embodiment corresponding to the first embodiment, and the present embodiment can be implemented in cooperation with the first embodiment. Related technical details mentioned in the first embodiment are still valid in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related art details mentioned in the present embodiment can also be applied to the first embodiment.
It should be noted that each module referred to in this embodiment is a logical module, and in practical applications, one logical unit may be one physical unit, may be a part of one physical unit, and may be implemented by a combination of multiple physical units. In addition, in order to highlight the innovative part of the present application, a unit that is not so closely related to solving the technical problem proposed by the present application is not introduced in the present embodiment, but it does not indicate that no other unit exists in the present embodiment.
EXAMPLE III
An embodiment of the present application provides a congestion control system, and fig. 3 is a block diagram of a congestion control system, which includes a server 301, a base station 302, and a User Plane Function (UPF) 303.
Specifically, fig. 4 is a flowchart of an operating method of the congestion control system, and as shown in fig. 4, the method specifically includes the following steps.
It should be noted that the UPF303 establishes one or more receive queues for each receive port, where the receive queues are first-in-first-out queues. When data messages sent by the server 301 pass through the UPF303, the data messages enter respective corresponding receiving queues to queue up, and wait for the UPF303 to process the data messages.
The congestion condition comprises that the number of received data messages in a receiving queue is larger than a preset threshold value of the number of messages, and/or the speed of receiving the data messages is larger than the speed of sending the data messages. Specifically, the data packet may be marked by displaying an indication of Congestion (ECN) identifier, which may be network layer data in the data packet, for example, the ECN field may be located in a Transmission Control Protocol (TCP) field in the data packet.
In step 402, the upf303 sends a marked data message to the base station 302.
In step 403, the base station 302 identifies each received data packet according to the ECN flag in the flag data packet, and defines the flag data packet containing the ECN flag and having the ECN flag valid as congestion data. The base station 302 matches reverse transmission data opposite to the transmission direction of the congestion data; meanwhile, the number of the congestion data is counted, and when the number of the congestion data is larger than a preset congestion threshold value, the window value of the ACK in the reverse transmission data is modified, so that the network congestion is relieved.
It should be noted that the window value is inversely proportional to the number of congestion data, and the larger the number of congestion data is, the smaller the window value is.
If the transmission direction of the congestion data is the data packet sent by the server 301 and forwarded by the UPF303 so that the base station 302 can receive the congestion data, the reverse transmission data is the data packet sent by the base station 302 and forwarded by the UPF303 so that the server 301 can receive the congestion data.
In step 404, the base station 302 sends the modified window value of ACK to the server 301.
In step 405, the server 301 modifies the sending speed of the data packet according to the modified ACK window value.
In step 406, the server 301 sends the data packet to the UPF303 at the modified sending speed.
It should be noted that, because the speed of sending the data packets by the server 301 is reduced, the number of the data packets received by the UPF303 is reduced, thereby alleviating network congestion.
In this embodiment, the base station identifies the received data packet according to the ECN flag in the flag data packet, and determines that congestion data exists, so that the base station can match reverse transmission data in a direction opposite to a transmission direction corresponding to the congestion data, adjust a window value of an acknowledgment character in the reverse transmission data, and send the window value to a server corresponding to the reverse transmission data, so that the server can adjust a speed of sending the data packet according to the window value, reduce congestion in a communication network, improve communication quality of the communication network, and improve user experience.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and scope of the invention, and such modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A method of congestion control, the method comprising:
receiving a marked data message sent by a user plane functional entity; wherein, the marked data message is obtained by marking the data message meeting the congestion condition by the user plane functional entity;
determining congestion data according to the marked data message; wherein the determining congestion data comprises: determining the transmission direction of congestion data;
matching reverse transmission data opposite to the transmission direction of the congestion data; if the transmission direction of the congestion data is the data message which is sent by the server and can be received by the base station through the forwarding of the user plane functional entity, the reverse transmission data is the data message which is sent by the base station and can be received by the server through the forwarding of the user plane functional entity;
adjusting a window value of an acknowledgement character in the reverse transmission data;
and sending the adjusted window value of the confirmation character to a server so that the server reduces the speed of sending the data message according to the adjusted window value of the confirmation character.
2. The method of claim 1, wherein said step of determining congestion data based on said marked data packet comprises:
if the marked data message is determined to include a congestion display indication, and the congestion display indication is effective, determining that the marked data message is the congestion data;
wherein the congestion indication is used to indicate that the marked data packet satisfies a congestion condition.
3. The method according to claim 2, wherein the congestion condition comprises a number of received data packets in a receive queue being greater than a predetermined threshold number of packets, and/or a speed of receiving the data packets being greater than a speed of sending the data packets.
4. The method of claim 1, wherein after said step of determining congestion data based on said marked data packets, further comprising:
and counting the number of the received congestion data.
5. The method of claim 4, wherein the step of adjusting the window value of the acknowledgement character in the reverse transmission data comprises:
and adjusting the window value of the confirmation character according to the number of the congestion data.
6. The method of claim 5, wherein the window value of the acknowledgement character is inversely proportional to the number of congestion data.
7. A congestion control apparatus, comprising:
the receiving module is used for receiving a marked data message sent by the user plane functional entity; wherein, the marked data message is obtained by marking the data message meeting the congestion condition by the user plane functional entity;
a determining module, configured to determine congestion data according to the marked data packet; wherein the determining congestion data comprises: determining the transmission direction of congestion data;
the matching module is used for matching reverse transmission data opposite to the transmission direction of the congestion data; if the transmission direction of the congestion data is the data message which is sent by the server and can be received by the base station through the forwarding of the user plane functional entity, the reverse transmission data is the data message which is sent by the base station and can be received by the server through the forwarding of the user plane functional entity;
the adjusting module is used for adjusting the window value of the confirmation character in the reverse transmission data;
and the sending module is used for sending the adjusted window value of the confirmation character to a server so that the server reduces the speed of sending the data message according to the adjusted window value of the confirmation character.
8. The apparatus of claim 7, wherein the determining module comprises:
a congestion determining submodule, configured to determine that the marked data packet includes a congestion display indication, and when the congestion display indication is valid, determine that the marked data packet is the congestion data; wherein the congestion indication is used to indicate that the marked data packet satisfies a congestion condition.
9. The apparatus of claim 7, further comprising:
and the counting module is used for counting the number of the received congestion data.
10. The apparatus of claim 9, wherein the adjustment module comprises:
and the adjusting submodule is used for adjusting the window value of the confirmation character according to the number of the congestion data.
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| CN101188611A (en) * | 2007-11-21 | 2008-05-28 | 华为技术有限公司 | Congestion notification method, system and node device |
| CN101867512A (en) * | 2010-04-15 | 2010-10-20 | 华为技术有限公司 | Data transmission control method and device |
| CN108011834A (en) * | 2016-10-28 | 2018-05-08 | 华为技术有限公司 | The definite method and apparatus of TCP congestion windows |
| CN108881056A (en) * | 2017-05-15 | 2018-11-23 | 华为技术有限公司 | A kind of jamming control method, the network equipment and its network interface controller |
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| US7352700B2 (en) * | 2003-09-09 | 2008-04-01 | Lucent Technologies Inc. | Methods and devices for maximizing the throughput of TCP/IP data along wireless links |
| US11202279B2 (en) * | 2017-01-16 | 2021-12-14 | Samsung Electronics Co., Ltd | Method and apparatus for processing data in wireless communication system |
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| CN101188611A (en) * | 2007-11-21 | 2008-05-28 | 华为技术有限公司 | Congestion notification method, system and node device |
| CN101867512A (en) * | 2010-04-15 | 2010-10-20 | 华为技术有限公司 | Data transmission control method and device |
| CN108011834A (en) * | 2016-10-28 | 2018-05-08 | 华为技术有限公司 | The definite method and apparatus of TCP congestion windows |
| CN108881056A (en) * | 2017-05-15 | 2018-11-23 | 华为技术有限公司 | A kind of jamming control method, the network equipment and its network interface controller |
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