CN104811998B - A kind of method and wireless access point of the adjustment of controlling transmission control protocol window - Google Patents

A kind of method and wireless access point of the adjustment of controlling transmission control protocol window Download PDF

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CN104811998B
CN104811998B CN201410041074.XA CN201410041074A CN104811998B CN 104811998 B CN104811998 B CN 104811998B CN 201410041074 A CN201410041074 A CN 201410041074A CN 104811998 B CN104811998 B CN 104811998B
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queue
ack
message
server
packet
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CN104811998A (en
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丁厚永
赵广
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0273—Traffic management, e.g. flow control or congestion control adapting protocols for flow control or congestion control to wireless environment, e.g. adapting transmission control protocol [TCP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/187—Details of sliding window management

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention discloses a kind of method and wireless access point of the adjustment of control TCP window, this method includes：AP is cached in the first ACK messages to first queue, the first interval time for sending ACK messages in the first queue is calculated according to the network bandwidth between AP and server, the ACK messages in the first queue are sent to server according still further to the first interval time, the ACK message amounts that server receives whithin a period of time can be controlled, to the expansion that the TCP window ensured between wireless terminal and server can be stablized, the concussion of TCP window is avoided.

Description

Method for controlling transmission control protocol window adjustment and wireless access point
Technical Field
The embodiment of the invention relates to the field of communication, in particular to a method for controlling the adjustment of a transmission control protocol window and a wireless access point.
Background
With the popularization of wireless networks, more and more users begin to use wireless terminals, and the wireless terminals need to establish a Transmission Control Protocol (TCP) connection with a server through an Access Point (AP) to transmit data with the server. After the server transmits data to the wireless terminal, the wireless terminal needs to return an Acknowledgement (ACK) message to the server, which indicates that the data sent from the server is acknowledged and received without errors. The ACK packet is a transmission control packet sent by the receiving end to the transmitting end when the transmitting end and the receiving end perform data communication through a TCP connection, and is used to indicate that the data sent from the transmitting end is received correctly.
At present, in order to save air interface bandwidth consumption, a wireless link layer driver performs aggregation processing when sending a message to an AP, aggregates a plurality of messages into one large message, and sends the large message to the AP once after forming an aggregated message, so that one aggregated message may contain a plurality of ACK messages, and the AP analyzes a plurality of ACK messages from the aggregated message and then sends the analyzed plurality of ACK messages to a server at the same time.
However, the AP continuously sends a plurality of ACK messages to the server in a very short time, and the server continuously receives a plurality of ACK messages in a short time, which may cause the server to instantaneously enlarge the TCP window according to the specification of the TCP protocol, and send more messages to the terminal, and the message flow may exceed the bandwidth limit of the network between the server and the wireless terminal, resulting in network packet loss, so that the server may reduce the TCP sending window, and cause low-order oscillation of the TCP window between the server and the wireless terminal.
Disclosure of Invention
The embodiment of the invention provides a method for controlling the adjustment of a transmission control protocol window and a wireless access point, which are used for controlling the sending of an ACK message on the AP and avoiding the oscillation of a TCP window between a wireless terminal and a server.
The first aspect of the present invention provides a method for controlling TCP window adjustment, comprising:
the method comprises the steps that a wireless Access Point (AP) caches a first Acknowledgement (ACK) message to a first queue, wherein the first queue is a queue corresponding to a first Transmission Control Protocol (TCP) connection between a wireless terminal and a server;
the AP calculates a first interval time for sending the ACK message in the first queue according to the network bandwidth between the AP and the server;
and the AP sends the ACK message in the first queue to the server according to the first interval time.
With reference to the first aspect of the present invention, in a first implementation manner of the first aspect of the present invention, the calculating, by the AP according to the network bandwidth between the AP and the server, a first interval time for sending the ACK packet in the first queue includes:
and the AP calculates a first interval time for sending the ACK message in the first queue according to the network bandwidth between the AP and the server and the weight of the total bandwidth occupied by the first TCP connection.
With reference to the first aspect of the present embodiment or the first implementation manner of the first aspect, in a second implementation manner of the first aspect of the present embodiment, before the caching, by the AP, the first ACK packet in the first queue, the method further includes:
the AP receives a first aggregation message sent by the wireless terminal, wherein the first aggregation message comprises the first ACK message;
and the AP extracts the first ACK message from the first aggregation message.
With reference to the second implementation manner of the first aspect of the present embodiment, in a third implementation manner of the first aspect of the present embodiment, the first aggregation message further includes a second ACK message;
the method further comprises the following steps:
the AP extracts the second ACK message from the first aggregation message;
the AP caches the second ACK message to a second queue, wherein the second queue is a queue corresponding to a second TCP connection between the wireless terminal and a server;
the AP calculates a second interval time for sending the ACK message in the second queue according to the network bandwidth between the AP and the server;
and the AP sends the ACK message in the second queue to the server according to the second interval time.
With reference to the first aspect of the present embodiment or the first implementation manner of the first aspect, in a fourth implementation manner of the first aspect of the present embodiment, before the caching, by the AP, the first ACK packet in the first queue, the method further includes:
when the AP successfully sends the data message to the wireless terminal, the AP analyzes the serial number of the successfully sent data message from the interrupt notification;
and the AP generates the first ACK message, wherein the sequence number of the first ACK message is the sequence number of the successfully sent data message analyzed from the interrupt notification by the AP.
A second aspect of the embodiments of the present invention provides a wireless access point AP, including:
the first cache module is used for caching a first Acknowledgement (ACK) message into a first queue, wherein the first queue is a queue corresponding to a first Transmission Control Protocol (TCP) connection between the wireless terminal and the server;
a first calculating module, configured to calculate, according to a network bandwidth between the AP and the server, a first interval time for sending the ACK packet in the first queue;
and the first sending module is used for sending the ACK message in the first queue to the server according to the first interval time.
With reference to the second aspect of the present invention, in a first implementation manner of the second aspect of the present invention, the first calculating module is specifically configured to calculate a first interval time for sending the ACK packet in the first queue according to a network bandwidth between the AP and the server and a weight of a total bandwidth occupied by the first TCP connection.
With reference to the second aspect of the embodiment of the present invention or the first implementation manner of the second aspect, in a second implementation manner of the second aspect of the embodiment of the present invention, the AP further includes:
a receiving module, configured to receive a first aggregation packet sent by the wireless terminal, where the first aggregation packet includes the first ACK packet;
and the first extraction module is used for extracting the first ACK message from the first aggregation message.
With reference to the second implementation manner of the second aspect of the present embodiment, in a third implementation manner of the second aspect of the present embodiment, the first aggregation message further includes a second ACK message;
the AP further comprises:
a second extraction module, configured to extract the second ACK packet from the first aggregation packet;
a second buffer module, configured to buffer the second ACK packet into a second queue, where the second queue is a queue corresponding to a second TCP connection between the wireless terminal and the server;
a second calculating module, configured to calculate a second interval time for sending the ACK packet in the second queue according to a network bandwidth between the AP and the server;
and the second sending module is used for sending the ACK message in the second queue to the server according to the second interval time.
With reference to the second aspect of the embodiment of the present invention or the first implementation manner of the second aspect, in a fourth implementation manner of the second aspect of the embodiment of the present invention, the AP further includes:
the analysis module is used for analyzing the serial number of the successfully transmitted data message from the interrupt notification when the AP successfully transmits the data message to the wireless terminal;
and the generating module is used for generating the first ACK message, wherein the sequence number of the first ACK message is the sequence number of the successfully sent data message analyzed from the interrupt notification by the AP.
According to the technical scheme provided by the embodiment of the invention, the AP caches the first ACK message in the first queue, calculates the first interval time for sending the ACK message in the first queue according to the network bandwidth between the AP and the server, and then sends the ACK message in the first queue to the server according to the first interval time, so that the server is prevented from receiving excessive ACK messages in a very short time period, and the increase or decrease rate of a TCP window of the server can be controlled by controlling the number of the ACK messages received by the server in a period of time according to a TCP protocol sliding window mechanism, so that the TCP window between the wireless terminal and the server can be stably expanded, the oscillation of the TCP window is avoided, and the utilization rate of the effective bandwidth between the wireless terminal and the server is improved.
Drawings
Fig. 1 is a flowchart illustrating a method for controlling TCP window adjustment according to an embodiment of the present invention;
fig. 2 is another schematic flow chart of a method for controlling TCP window adjustment according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating a method for controlling TCP window adjustment according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a wireless access point according to an embodiment of the present invention;
fig. 5 is another schematic structural diagram of a wireless access point according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a wireless access point according to an embodiment of the present invention;
fig. 7 is another schematic structural diagram of a wireless access point according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a system for controlling TCP window adjustment according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a method for controlling TCP window adjustment according to an embodiment of the present invention includes:
101. the AP caches the first ACK message in a first queue;
after obtaining the first ACK packet, the AP may cache the first ACK packet in a first queue, where the first queue is a queue corresponding to a first TCP connection between the wireless terminal and the server, and the first ACK packet may be an acknowledgement of a data packet transmitted by the first TCP connection.
102. The AP calculates a first interval time for sending the ACK message in the first queue according to the network bandwidth between the AP and the server;
after the first ACK message is cached in the first queue by the AP, the first interval time for sending the ACK message in the first queue is calculated according to the network bandwidth between the AP and the server, so that the adjustment of a TCP window of the server can be controlled, and the network bandwidth is utilized to the maximum efficiency.
It can be understood that there are many ways to calculate the interval time of the ACK packet in the first queue, which may be calculated according to the network bandwidth between the AP and the server, or according to the network bandwidth between the AP and the server and the weight of the total bandwidth occupied by the first TCP connection corresponding to the first queue, and is not limited herein.
For example, the interval time between sending ACK packet 1 and ACK packet 2 in the first queue may be calculated according to the formula t = (seq 2-seq 1) × 8/(factor ×) s/100 × weight, where seq2 is the sequence number of ACK packet 2, seq1 is the sequence number of ACK packet 1, seq2 is greater than seq1, factor is the delay adjustment factor, gts is the total bandwidth of the network, and weight is the weight of the total bandwidth occupied by each TCP connection. In addition, there are many other calculation formulas that make the interval time t inversely proportional to the total bandwidth of the network, and this is not a limitation. The delay adjustment factor may be an empirical value obtained according to a network bandwidth, a network path, and the like, and may have a value of 0.8, or may have various values according to different actual network conditions, or may be omitted, which is not limited herein.
103. And the AP sends the ACK message in the first queue to the server according to the first interval time.
And after the AP obtains the first interval time by calculation, the AP sends the ACK message in the first queue to the server according to the first interval time.
It should be noted that, according to the TCP protocol sliding window mechanism, according to the difference between the intervals of sending the ACK packet by the AP, the number of the ACK packets received by the server within a period of time may be controlled, so as to control the rate of increasing or decreasing the TCP window of the server.
In the embodiment of the invention, an AP caches a first ACK message in a first queue, the first queue is a queue corresponding to a first TCP connection between a wireless terminal and a server, then the AP calculates a first interval time for sending the ACK message in the first queue according to a network bandwidth between the AP and the server, and then sends the ACK message in the first queue to the server according to the first interval time, so that the server is prevented from receiving too many ACK messages in a very short time period, and a TCP window of the server can be controlled to be increased or reduced by controlling the number of the ACK messages received by the server in a period of time according to a TCP protocol sliding window mechanism, so that the TCP window between the wireless terminal and the server can be stably expanded, the oscillation of the TCP window is avoided, and the utilization rate of the effective bandwidth between the wireless terminal and the server is improved.
In the above embodiment, the first ACK packet buffered in the first queue by the AP may be extracted from an aggregation packet sent by the wireless terminal by the AP, or may be actively generated according to an interrupt notification when the AP generates the interrupt notification.
Based on the embodiment shown in fig. 1, the technical solution of the present invention is further explained by taking an example that the ACK packet buffered in the queue is extracted from the aggregation packet by the AP. Referring to fig. 2, another method for controlling TCP window adjustment according to an embodiment of the present invention includes:
201. the AP receives a first aggregation message sent by the wireless terminal, wherein the first aggregation message comprises a first ACK message;
after receiving a data message sent by a server, a wireless terminal aggregates a plurality of ACKs into one message to form an aggregated message and sends the aggregated message to an AP, the AP receives a first aggregated message sent by the wireless terminal, the first aggregated message comprises the first ACK message, and the first ACK message is an acknowledgement message of the data message which is transmitted by a first TCP connection between the wireless terminal and the server.
It is understood that the wireless terminal may be a WIFI (wireless fidelity) terminal, and sends the message to the AP by using a message aggregation means, which is not limited herein. The AP is a wireless access point to which the wireless terminal is associated.
202. The AP extracts a first ACK message from the first aggregation message;
and after receiving the first aggregation message, the AP extracts a first ACK message from the first aggregation message. The first ACK packet may be one ACK packet or may represent one type of ACK packet, that is, multiple acknowledgement packets to the data packet transmitted by the first TCP connection, which is not limited herein.
203. The AP caches the first ACK message to a first queue;
after the AP extracts the first ACK packet, the AP may buffer the first ACK packet into a first queue, where the first queue is a queue corresponding to a first TCP connection between the wireless terminal and the server. The ACK messages in the first queue are arranged in sequence from small to large according to the sequence numbers.
204. The AP calculates a first interval time for sending the ACK message in the first queue according to the network bandwidth between the AP and the server;
after the AP caches the first ACK message in the first queue, the first interval time for sending the ACK message in the first queue is calculated according to the network bandwidth between the AP and the server, and the number of the ACK messages received by the server in a period of time can be controlled, so that the adjustment of a first TCP window of the server can be controlled, and the utilization rate of the network bandwidth is improved.
It can be understood that there are many ways to calculate the interval time of the ACK packet in the first queue, which may be calculated according to the network bandwidth between the AP and the server, or according to the network bandwidth between the AP and the server and the weight of the total bandwidth occupied by the first TCP connection corresponding to the first queue, and is not limited herein.
For example, the interval time between sending ACK packet 1 and ACK packet 2 in the first queue may be calculated according to the formula t = (seq 2-seq 1) × 8/(factor ×) s/100 × weight, where seq2 is the sequence number of ACK packet 1, seq1 is the sequence number of ACK packet 2, seq2 is greater than seq1, factor is a delay adjustment factor, gts is the total bandwidth of the network, and weight is the weight of the total bandwidth occupied by each TCP connection. In addition, there are many other calculation formulas that make the interval time t inversely proportional to the total bandwidth of the network, and this is not a limitation. The delay adjustment factor may be an empirical value obtained according to a network bandwidth, a network path, and the like, and may have a value of 0.8, or may have various values according to different actual network conditions, or may be omitted, which is not limited herein.
205. The AP sends an ACK message in a first queue to the server according to the first interval time;
and after the AP obtains the first interval time by calculation, the AP sends the ACK message in the first queue to the server according to the first interval time.
It should be noted that, according to the TCP protocol sliding window mechanism, according to the difference between the intervals of sending the ACK packet by the AP, the number of the ACK packets received by the server within a period of time may be controlled, so as to control the rate of increasing or decreasing the TCP window of the server.
Further, the method may further include:
206. the AP extracts a second ACK message from the first aggregation message;
if the first aggregate message includes a second ACK message, the AP may further extract a second ACK message from the first aggregate message, where the second ACK message is an acknowledgement message of a data message transmitted via a second TCP connection between the wireless terminal and the server.
207. The AP caches the second ACK message in a second queue;
and after the AP extracts the second ACK message, the AP caches the second ACK message to a second queue, wherein the second queue is a queue corresponding to a second TCP connection between the wireless terminal and the server.
208. The AP calculates a second interval time for sending the ACK message in the second queue according to the network bandwidth between the AP and the server;
and after caching the second ACK message into a second queue, the AP calculates a second interval time for sending the ACK message in the second queue according to the network bandwidth between the AP and the server.
209. And the AP sends the ACK message in the second queue to the server according to the second interval time.
And after the AP calculates the second interval time, the AP sends the ACK message in the second queue to the server according to the second interval time.
It should be understood that steps 206 to 209 are processing manners when the first aggregate packet includes the second ACK packet, and if the first aggregate packet does not include other packets except the first ACK packet, steps 206 to 209 may not be executed, which is not limited herein.
It should be noted that, not only there are two TCP connections, but also there are not only two queues, and there may be more queues according to the number of TCP connections, which is not limited herein.
In the embodiment of the invention, the AP receives a first aggregation message, extracts a first ACK message from the first aggregation message and caches the first ACK message to a first queue, and sends the ACK message in the first queue according to a first interval time, extracts a second ACK message and caches the second ACK message to a second queue when the first aggregation message also contains a second ACK message, and sends the ACK message in the second queue according to a second interval time, so that the increase or decrease of a TCP window corresponding to each TCP connection on the server can be controlled.
For convenience of understanding, the following describes a specific application scenario of the method for controlling the tcp window adjustment according to an embodiment of the present invention:
assuming that after the wireless terminal receives 2 data messages respectively sent by the server on 2 TCP connections, 4 ACK messages (the ACK message with sequence numbers 200 and 201 corresponding to the first TCP connection and the ACK message with sequence numbers 202 and 203 corresponding to the second TCP connection) can be aggregated into a first aggregation message and sent to the AP, and the AP receives the first aggregation message sent by the wireless terminal;
the AP extracts a first ACK message (the ACK messages with the sequence numbers of 200 and 201 respectively) from the first aggregation message;
the AP caches a first ACK message (ACK message with sequence numbers of 200 and 201 respectively) to a first queue (a queue corresponding to the first TCP connection);
the AP extracts a second ACK message (the ACK messages with the sequence numbers of 202 and 203 respectively) from the first aggregation message;
the AP caches the second ACK message (the ACK message with the sequence numbers of 202 and 203 respectively) to a second queue (a queue corresponding to the second TCP connection);
if the total bandwidth of the network is 200K, the first TCP connection accounts for 20% of the total bandwidth, the second TCP connection accounts for 80% of the total bandwidth,
the AP calculates the interval time for sending the ACK message according to a formula t = (seq 2-seq 1) × 8/(factor × s/100 × weight), and obtains that the first interval time for sending two adjacent ACK messages in the first queue is 1ms, and the second interval time for sending two adjacent ACK messages in the second ACK queue is 4 ms;
the AP sends ACK messages in the first queue to the server in sequence according to the calculated first interval time (1 ms);
and the AP sequentially sends the ACK messages in the second queue to the server according to the calculated second interval time (4 ms).
Based on the embodiment shown in fig. 1, the technical solution of the present invention is further explained by taking an example that the ACK packet buffered in the queue is an ACK packet actively generated by the AP according to the interrupt notification generated when the data packet is successfully transmitted. Referring to fig. 3, another method for controlling TCP window adjustment according to an embodiment of the present invention includes:
301. the AP analyzes the sequence number of the successfully sent data message from the interrupt notification;
after receiving the data message sent to the wireless terminal by the server, the AP sends the data message to the wireless terminal, if the sending is successful, the AP generates an interruption notice, the interruption notice comprises the serial number of the successfully sent data message, and the AP analyzes the serial number of the successfully sent data message from the interruption notice.
302. The AP generates a first ACK message, wherein the sequence number of the first ACK message is the sequence number of the successfully-sent data message analyzed from the interrupt notification by the AP;
and after the AP analyzes the serial number of the successfully sent data message from the interrupt notification, generating a first ACK message, wherein the serial number of the first ACK message is the serial number analyzed by the AP from the interrupt notification.
The first ACK packet may be one ACK packet or may represent one type of ACK packet, that is, multiple acknowledgement packets to the data packet transmitted by the first TCP connection.
303. The AP caches the first ACK message in a first queue;
the first queue is a queue corresponding to a first TCP connection between the wireless terminal and the server, and the first ACK message is an acknowledgement message of a data message transmitted through the first TCP connection.
The AP may further generate a second ACK packet, and buffer the second ACK packet into a second queue, where the second queue is a queue corresponding to a second TCP connection between the wireless terminal and the server, and the second ACK packet is an acknowledgement packet of a data packet transmitted through the second TCP connection. Similarly, the second ACK packet may be one ACK packet or may represent one type of ACK packet, that is, multiple acknowledgement packets to the data packet transmitted by the second TCP connection.
304. The AP calculates a first interval time for sending the ACK message in the first queue according to the network bandwidth between the AP and the server;
after the AP caches the first ACK message in the first queue, the first interval time for sending the ACK message in the first queue is calculated according to the network bandwidth between the AP and the server, and the number of the ACK messages received by the server in a period of time can be controlled, so that the adjustment of a first TCP window of the server can be controlled, and the utilization rate of the network bandwidth is improved.
It can be understood that there are many ways to calculate the interval time of the ACK packet in the first queue, which may be calculated according to the network bandwidth between the AP and the server, or according to the network bandwidth between the AP and the server and the weight of the total bandwidth occupied by the first TCP connection corresponding to the first queue, and is not limited herein.
For example, the interval time between sending ACK packet 1 and ACK packet 2 in the first queue may be calculated according to the formula t = (seq 2-seq 1) × 8/(factor ×) s/100 × weight, where seq2 is the sequence number of ACK packet 2, seq1 is the sequence number of ACK packet 1, seq2 is greater than seq1, factor is the delay adjustment factor, gts is the total bandwidth of the network, and weight is the weight of the total bandwidth occupied by each TCP connection. In addition, there are many other calculation formulas that make the interval time t inversely proportional to the total bandwidth of the network, and this is not a limitation. The delay adjustment factor may be an empirical value obtained according to a network bandwidth, a network path, and the like, and may have a value of 0.8, or may have various values according to different actual network conditions, or may be omitted, which is not limited herein.
305. And the AP sends the ACK message in the first queue to the server according to the first interval time.
And after the AP obtains the first interval time by calculation, the AP sends the ACK message in the first queue to the server according to the first interval time.
It should be noted that, according to the TCP protocol sliding window mechanism, according to the difference between the intervals of sending the ACK packet by the AP, the number of the ACK packets received by the server within a period of time may be controlled, so as to control the rate of increasing or decreasing the TCP window of the server.
Optionally, after the AP generates and buffers the first ACK packet in the first queue, the AP may buffer the successfully-sent data packet, and after the AP receives the second aggregate packet sent by the wireless terminal, determine whether the sequence number of the buffered successfully-sent data packet exists in an ACK packet in the second aggregate packet, if so, delete the buffered successfully-sent data packet, and if not, the AP may resend the buffered successfully-sent data packet to the wireless terminal until an ACK packet having the same sequence number as the successfully-sent data packet is extracted from the received aggregate packet.
In the embodiment of the invention, when the AP successfully sends the data message to the wireless terminal, the AP generates interruption, the interruption comprises the serial number of the successfully sent data message, the AP can extract the serial number of the successfully sent data message from the interruption, actively generates the first ACK message with the serial number of the extracted successfully sent data message and caches the first ACK message in the first queue, thereby avoiding the time delay caused by the aggregation of a plurality of messages by the wireless terminal, improving the efficiency of data transmission processing and enabling the TCP window of the server to be timely adjusted.
For convenience of understanding, the following describes a specific application scenario of the method for controlling the tcp window adjustment according to an embodiment of the present invention:
after the AP successfully sends each 2 data messages to the wireless terminal on 2 TCP connections, the sequence numbers (200, 201, 202, and 203, respectively) of the 4 successfully sent data messages are extracted from the interrupt notification;
the AP generates 4 ACK messages with the same sequence number as the successfully sent data message (the first TCP connection corresponds to the ACK messages with the sequence numbers of 200 and 201, and the second TCP connection corresponds to the ACK messages with the sequence numbers of 202 and 203);
the AP caches a first ACK message (ACK message with sequence numbers of 200 and 201 respectively) to a first queue (a queue corresponding to the first TCP connection);
the AP caches the second ACK message (the ACK message with the sequence numbers of 202 and 203 respectively) to a second queue (a queue corresponding to the second TCP connection);
the AP may simultaneously cache the data packet (with sequence numbers of 200, 201, 202, and 203, respectively) that has generated the ACK packet and has successfully transmitted;
if the total bandwidth of the network is 200K, the first TCP connection accounts for 20% of the total bandwidth, the second TCP connection accounts for 80% of the total bandwidth,
the AP calculates the interval time for sending the ACK message according to a formula t = (seq 2-seq 1) × 8/(factor × s/100 × weight), and obtains that the first interval time for sending two adjacent ACK messages in the first queue is 1ms, and the second interval time for sending two adjacent ACK messages in the second ACK queue is 4 ms;
the AP sends ACK messages in the first queue to the server in sequence according to the calculated first interval time (1 ms);
the AP sends ACK messages in a second queue to the server in sequence according to the calculated second interval time (4 ms);
after receiving the aggregation message sent by the wireless terminal, the AP extracts the ACK message from the aggregation message to obtain 3 ACK messages with the sequence numbers of 200, 201 and 203;
the AP compares the ACK message (with the sequence numbers of 200, 201 and 203) extracted from the aggregation message with the cached success message (with the sequence numbers of 200, 201, 202 and 203) to obtain the ACK message without the sequence number of 202 in the aggregation message;
the AP may resend the buffered successfully transmitted data packet with sequence number 202 to the wireless terminal until an ACK packet with sequence number 202 is extracted from the received aggregation packet.
Referring to fig. 4, an embodiment of the present invention provides a wireless access point, including:
a first caching module 401, configured to cache a first acknowledgement ACK packet in a first queue, where the first queue is a queue corresponding to a first TCP connection between a wireless terminal and a server;
a first calculating module 402, configured to calculate a first interval time for sending the ACK packet in the first queue according to a network bandwidth between the AP and the server;
a first sending module 403, configured to send the ACK packet in the first queue to the server according to the first interval;
the first calculating module 402 may be specifically configured to calculate a first interval time for sending the ACK packet in the first queue according to a network bandwidth between the AP and the server and a weight of a total bandwidth occupied by the first TCP connection.
In the embodiment of the present invention, the first buffer module 401 buffers the first ACK packet into the first queue, the first queue is a queue corresponding to a first TCP connection between the wireless terminal and the server, the first calculating module 402 calculates a first interval time for sending ACK messages in the first queue according to a network bandwidth between the AP and the server, the first sending module 403 sends the ACK messages in the first queue to the server in sequence according to the first interval time, so as to prevent the server from receiving too many ACK messages in a very short time period, according to a TCP sliding window mechanism, by controlling the number of ACK messages received by the server in a period of time, the method can control the increasing or decreasing rate of the TCP window of the server, so that the TCP window between the terminal and the server can be stably enlarged, the oscillation of the TCP window is avoided, and the utilization rate of the effective bandwidth between the terminal and the server is improved.
In the above embodiment, the first caching module 401 caches the first ACK packet in the first queue, and in practical application, the ACK packet cached in the queue may be extracted from an aggregation packet sent by the wireless terminal by the AP, or may be actively generated according to an interrupt notification when the AP generates the interrupt notification.
Referring to fig. 5, another wireless access point according to an embodiment of the present invention includes:
a first caching module 501, configured to cache a first acknowledgement ACK packet in a first queue, where the first queue is a queue corresponding to a first TCP connection between a wireless terminal and a server;
a first calculating module 502, configured to calculate a first interval time for sending the ACK packet in the first queue according to a network bandwidth between the AP and the server;
a first sending module 503, configured to send the ACK packet in the first queue to the server according to the first interval;
the first calculating module 502 may specifically be configured to calculate a first interval time for sending the ACK packet in the first queue according to a network bandwidth between the AP and the server and a weight of a total bandwidth occupied by the first TCP connection;
in this embodiment, the wireless access point further includes:
a receiving module 504, configured to receive a first aggregation message sent by the wireless terminal, where the first aggregation message includes the first ACK message;
a first extracting module 505, configured to extract the first ACK packet from the first aggregated packet;
when the first aggregation message further includes the second ACK message, the wireless access point may further include:
a second extracting module 506, configured to extract the second ACK packet from the first aggregated packet;
a second buffer module 507, configured to buffer the second ACK packet into a second queue, where the second queue is a queue corresponding to a second TCP connection between the wireless terminal and the server;
a second calculating module 508, configured to calculate a second interval time for sending the ACK packet in the second queue according to the network bandwidth between the AP and the server;
a second sending module 509, configured to send the ACK packet in the second queue to the server according to the second interval time.
In this embodiment of the present invention, the receiving module 504 receives a first aggregation message, the first extracting module 505 extracts a first ACK message from the first aggregation message, the first caching module 501 caches the first ACK message to a first queue, the first sending module 503 sends the ACK message in the first queue according to a first interval time, when the first aggregation message further includes a second ACK message, the second extracting module 506 extracts the second ACK message to cache to a second queue, and the second sending module 509 sends the ACK message in the second queue according to a second interval time, so as to control an increase or a decrease of a TCP window corresponding to each TCP connection on the server.
In order to facilitate understanding of the above embodiments, the following describes an interaction process of each module of the above wireless access point in a specific application scenario:
assuming that after the wireless terminal receives 2 data messages respectively sent by the server over 2 TCP connections, 4 ACK messages (the ACK message with sequence numbers 200 and 201 corresponding to the first TCP connection, and the ACK message with sequence numbers 202 and 203 corresponding to the second TCP connection) may be aggregated into the first aggregation message and sent to the AP, and the receiving module 504 receives the first aggregation message sent by the wireless terminal;
the first extraction module 505 extracts a first ACK packet (ACK packets with sequence numbers of 200 and 201, respectively) from the first aggregate packet;
the first caching module 501 caches a first ACK packet (ACK packets with sequence numbers of 200 and 201, respectively) in a first queue (a queue corresponding to the first TCP connection);
a second extraction module 506 extracts a second ACK packet (ACK packets with sequence numbers of 202 and 203, respectively) from the first aggregated packet;
the second buffer module 507 buffers the second ACK packet (ACK packets with sequence numbers of 202 and 203, respectively) into a second queue (a queue corresponding to the second TCP connection);
if the total bandwidth of the network is 200K, the first TCP connection accounts for 20% of the total bandwidth, the second TCP connection accounts for 80% of the total bandwidth,
the AP calculates the interval time for sending the ACK packet according to a formula t = (seq 2-seq 1) × 8/(factor × s/100 × weight), the first interval time for sending two adjacent ACK packets in the first queue obtained by the first calculating module 502 is 1ms, and the second interval time for sending two adjacent ACK packets in the second ACK queue obtained by the second calculating module 508 is 4 ms;
the first sending module 503 sends the ACK messages in the first queue to the server in sequence according to the calculated first interval time (1 ms);
the second sending module 509 sends the ACK packets in the second queue to the server in sequence according to the calculated second interval time (4 ms).
Referring to fig. 6, another wireless access point according to an embodiment of the present invention includes
A first caching module 601, configured to cache a first acknowledgement ACK packet in a first queue, where the first queue is a queue corresponding to a first TCP connection between a wireless terminal and a server;
a first calculating module 602, configured to calculate a first interval time for sending the ACK packet in the first queue according to a network bandwidth between the AP and the server;
a first sending module 603, configured to send the ACK packet in the first queue to the server according to the first interval;
the first calculating module 602 may be specifically configured to calculate a first interval time for sending the ACK packet in the first queue according to a network bandwidth between the AP and the server and a weight of a total bandwidth occupied by the first TCP connection;
in this embodiment, the wireless access point further includes:
an analyzing module 604, configured to analyze, when the AP successfully sends the data packet to the wireless terminal, a sequence number of the successfully sent data packet from the interrupt notification;
a generating module 605, configured to generate an ACK packet, where a sequence number of the ACK packet is a sequence number of the data packet that is successfully sent and analyzed by the AP from the interrupt notification.
In the embodiment of the present invention, when the AP successfully sends the data packet to the wireless terminal, the AP generates an interrupt, the interrupt includes a serial number of the successfully sent data packet, the parsing module 604 extracts the serial number of the successfully sent data packet from the interrupt, and the generating module 605 actively generates the first ACK packet whose serial number is the serial number of the successfully sent data packet, and caches the first ACK packet in the first queue.
In order to facilitate understanding of the above embodiments, the following describes an interaction process of each module of the above wireless access point in a specific application scenario:
after the AP successfully sends each 2 data packets to the wireless terminal on 2 TCP connections, the parsing module 604 extracts the sequence numbers (200, 201, 202, and 203, respectively) of the 4 successfully sent data packets from the interrupt notification;
the generating module 605 generates 4 ACK packets with the same sequence number as the successfully sent data packet (the first TCP connection corresponds to the ACK packets with sequence numbers of 200 and 201, and the second TCP connection corresponds to the ACK packets with sequence numbers of 202 and 203);
the first caching module 601 caches a first ACK packet (ACK packets with sequence numbers of 200 and 201, respectively) in a first queue (a queue corresponding to the first TCP connection);
the AP may buffer the second ACK packet (ACK packets with sequence numbers 202 and 203, respectively) into a second queue (a queue corresponding to the second TCP connection);
the AP may simultaneously cache the data packet (with sequence numbers of 200, 201, 202, and 203, respectively) that has generated the ACK packet and has successfully transmitted;
if the total bandwidth of the network is 200K, the first TCP connection accounts for 20% of the total bandwidth, the second TCP connection accounts for 80% of the total bandwidth,
the AP calculates the interval time for sending the ACK message according to a formula t = (seq 2-seq 1) × 8/(factor × s/100 × weight), the first interval time for sending two adjacent ACK messages in the first queue obtained by the first calculating module 602 is 1ms, and the second interval time for sending two adjacent ACK messages in the second ACK queue is 4 ms;
the first sending module 603 sends the ACK messages in the first queue to the server in sequence according to the calculated first interval time (1 ms);
the AP can sequentially send the ACK messages in the second queue to the server according to the calculated second interval time (4 ms);
after receiving the aggregation message sent by the wireless terminal, the AP may extract the ACK message therein to obtain 3 ACK messages with sequence numbers of 200, 201, and 203;
the AP may compare the ACK packet (with sequence numbers 200, 201, and 203) extracted from the aggregated packet with the cached success packet (with sequence numbers 200, 201, 202, and 203), to obtain an ACK packet without sequence number 202 in the aggregated packet;
the AP may resend the buffered successfully transmitted data packet with sequence number 202 to the wireless terminal until an ACK packet with sequence number 202 is extracted from the received aggregation packet.
Referring to fig. 7, an embodiment of the invention provides a wireless access point 700, including:
memory 701, processor 702, RF circuitry 703, communications interface 704, these components being interconnected by one or more communications buses or signal lines 705;
the processor 702 may be a general-purpose processor, such as a Central Processing Unit (CPU) or a Network Processor (NP); but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, etc.
The memory 701 is used for storing programs. In particular, the program may include program code comprising computer operating instructions. The memory 701 may include a Random Access Memory (RAM) and may also include a non-volatile memory (non-volatile memory), such as one or more magnetic disk storage devices, flash memory devices, or other volatile solid-state storage devices.
The RF circuit 703 is used for transmitting and receiving radio signals.
The processor 702 executes the program stored in the memory 701 to implement the method for controlling TCP window adjustment provided by the embodiment of the present invention, which includes:
caching a first acknowledgement ACK message into a first queue, wherein the first queue is a queue corresponding to a first TCP connection between a wireless terminal and a server;
calculating first interval time for sending the ACK message in the first queue according to the network bandwidth between the AP and the server;
and sending the ACK message in the first queue to the server according to the first interval time.
In some embodiments of the present invention, the calculating a first interval time for sending the ACK packet in the first queue according to the network bandwidth between the AP and the server specifically includes:
calculating first interval time for sending the ACK message in the first queue according to the network bandwidth between the AP and the server and the weight of the total bandwidth occupied by the first TCP connection;
in some embodiments of the present invention, before buffering the first ACK packet into the first queue, the method may further include:
receiving a first aggregation message sent by the wireless terminal, wherein the first aggregation message comprises the first ACK message;
and extracting the first ACK message from the first aggregation message.
In some embodiments of the present invention, the first aggregation message further includes a second ACK message, and the method further includes:
extracting the second ACK message from the first aggregation message;
caching the second ACK message into a second queue, wherein the second queue is a queue corresponding to a second TCP connection between the wireless terminal and the server;
calculating a second interval time for sending the ACK message in the second queue according to the network bandwidth between the AP and the server;
and sending the ACK message in the second queue to the server according to the second interval time.
In some embodiments of the present invention, before buffering the first ACK packet into the first queue, the method may further include:
when the AP successfully sends the data message to the wireless terminal, analyzing the serial number of the successfully sent data message from the interrupt notification;
and the AP generates a first ACK message, wherein the sequence number of the first ACK message is the sequence number of the successfully-sent data message analyzed from the interruption by the AP.
Embodiments of the present invention relate to wireless access points that may have more or fewer components than shown in fig. 7, may combine two or more components, or may have different configurations or arrangements of components, and each component may be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and/or application specific integrated circuits.
As shown in fig. 8, an embodiment of the present invention provides a system for controlling TCP window adjustment, where the system includes: wireless terminal 801, AP802, and server 803; wherein,
the AP802 is configured to buffer a first ACK packet into a first queue, where the first queue is a queue corresponding to a first TCP connection between the wireless terminal 801 and the server 803; calculating a first interval time for sending the ACK packet in the first queue according to the network bandwidth between the AP802 and the server 803; sending the ACK packet in the first queue to the server 803 according to the first interval;
the wireless terminal 801 associates with the AP802 and establishes the first TCP connection with the server 803 via the AP 802.
Optionally, the wireless terminal 801 is configured to send a first aggregate packet to the AP802, where the first aggregate packet includes the first ACK packet. Correspondingly, the AP is further configured to receive a first aggregation packet sent by the wireless terminal 801, and extract the first ACK packet from the first aggregation packet.
Optionally, the AP802 is further configured to send a data packet to the wireless terminal 801, and if the sending is successful, generate an interrupt that the sending of the data packet is successful, where the interrupt includes a serial number of the successfully sent data packet; and analyzing the serial number of the successfully transmitted data message from the interrupt, and generating the first ACK message, wherein the serial number of the first ACK message is the serial number of the successfully transmitted data message analyzed from the interrupt notification by the AP.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A method for controlling TCP window adjustment, comprising:
the method comprises the steps that a wireless Access Point (AP) caches a first Acknowledgement (ACK) message to a first queue, wherein the first queue is a queue corresponding to a first Transmission Control Protocol (TCP) connection between a wireless terminal and a server, and the wireless terminal establishes the first TCP connection with the server through the AP;
the AP calculates a first interval time for sending the ACK message in the first queue according to the network bandwidth between the AP and the server;
and the AP sends the ACK message in the first queue to the server according to the first interval time.
2. The method of claim 1, wherein the calculating, by the AP, a first interval time for sending the ACK packet in the first queue according to a network bandwidth between the AP and the server comprises:
and the AP calculates a first interval time for sending the ACK message in the first queue according to the network bandwidth between the AP and the server and the weight of the total bandwidth occupied by the first TCP connection.
3. The method according to claim 1 or 2, wherein before the wireless access point AP buffers the first ACK packet in the first queue, the method further comprises:
the AP receives a first aggregation message sent by the wireless terminal, wherein the first aggregation message comprises the first ACK message;
and the AP extracts the first ACK message from the first aggregation message.
4. The method of claim 3, wherein the first aggregate message further comprises a second ACK message;
the method further comprises the following steps:
the AP extracts the second ACK message from the first aggregation message;
the AP caches the second ACK message to a second queue, wherein the second queue is a queue corresponding to a second TCP connection between the wireless terminal and the server;
the AP calculates a second interval time for sending the ACK message in the second queue according to the network bandwidth between the AP and the server;
and the AP sends the ACK message in the second queue to the server according to the second interval time.
5. The method according to claim 1 or 2, wherein before the wireless access point AP buffers the first ACK packet in the first queue, the method further comprises:
when the AP successfully sends the data message to the wireless terminal, the AP analyzes the serial number of the successfully sent data message from the interrupt notification;
and the AP generates the first ACK message, wherein the sequence number of the first ACK message is the sequence number of the successfully sent data message analyzed from the interrupt notification by the AP.
6. A wireless Access Point (AP), comprising:
the first cache module is used for caching a first Acknowledgement (ACK) message into a first queue, wherein the first queue is a queue corresponding to a first Transmission Control Protocol (TCP) connection between the wireless terminal and the server; the wireless terminal establishes the first TCP connection with the server through the AP;
a first calculating module, configured to calculate, according to a network bandwidth between the AP and the server, a first interval time for sending the ACK packet in the first queue;
and the first sending module is used for sending the ACK message in the first queue to the server according to the first interval time.
7. The AP of claim 6, wherein the first calculating module is specifically configured to calculate a first interval time for sending the ACK packet in the first queue according to a network bandwidth between the AP and the server and a weight of a total bandwidth occupied by the first TCP connection.
8. The AP of claim 6 or 7, wherein the AP further comprises:
a receiving module, configured to receive a first aggregation packet sent by the wireless terminal, where the first aggregation packet includes the first ACK packet;
and the first extraction module is used for extracting the first ACK message from the first aggregation message.
9. The AP of claim 8,
the first aggregation message further comprises a second ACK message;
the AP further comprises:
a second extraction module, configured to extract the second ACK packet from the first aggregation packet;
a second buffer module, configured to buffer the second ACK packet into a second queue, where the second queue is a queue corresponding to a second TCP connection between the wireless terminal and the server;
a second calculating module, configured to calculate a second interval time for sending the ACK packet in the second queue according to a network bandwidth between the AP and the server;
and the second sending module is used for sending the ACK message in the second queue to the server according to the second interval time.
10. The wireless access point of claim 6 or 7, wherein the AP further comprises:
the analysis module is used for analyzing the serial number of the successfully transmitted data message from the interrupt notification when the AP successfully transmits the data message to the wireless terminal;
and the generating module is used for generating the first ACK message, wherein the sequence number of the first ACK message is the sequence number of the successfully sent data message analyzed from the interrupt notification by the AP.
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CN110166804B (en) * 2018-02-11 2021-12-03 华为技术有限公司 Method, device, communication system and computer readable storage medium for implementing video service
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6252851B1 (en) * 1997-03-27 2001-06-26 Massachusetts Institute Of Technology Method for regulating TCP flow over heterogeneous networks
CN1344456A (en) * 1998-10-07 2002-04-10 诺基亚网络公司 Enhanced acknowledgement pacing device and method for TCP connections
US6894974B1 (en) * 2000-05-08 2005-05-17 Nortel Networks Limited Method, apparatus, media, and signals for controlling packet transmission rate from a packet source
CN101138190A (en) * 2005-03-10 2008-03-05 三星电子株式会社 Transmission control method for tcp bi-directional transmission in asymmetric bandwidth pre-allocated subscriber network and apparatus therefor
CN103067432A (en) * 2011-10-21 2013-04-24 中国移动通信集团设计院有限公司 Sending method of data, sending end and communication system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6252851B1 (en) * 1997-03-27 2001-06-26 Massachusetts Institute Of Technology Method for regulating TCP flow over heterogeneous networks
CN1344456A (en) * 1998-10-07 2002-04-10 诺基亚网络公司 Enhanced acknowledgement pacing device and method for TCP connections
US6894974B1 (en) * 2000-05-08 2005-05-17 Nortel Networks Limited Method, apparatus, media, and signals for controlling packet transmission rate from a packet source
CN101138190A (en) * 2005-03-10 2008-03-05 三星电子株式会社 Transmission control method for tcp bi-directional transmission in asymmetric bandwidth pre-allocated subscriber network and apparatus therefor
CN103067432A (en) * 2011-10-21 2013-04-24 中国移动通信集团设计院有限公司 Sending method of data, sending end and communication system

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
IEEE802.11 DCF对TCP性能的影响及算法改进;王晓利，纪红，乐光新;《电路与系统学报》;20080815;第13卷(第4期);正文第2页第2段至第4段以及图1 *
垂直切换中避免TCP连接吞吐量下降方法的比较;卞涛;《电信快报》;20100810(第8期);正文第2章节 *

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