WO2013167024A2

WO2013167024A2 - Method and apparatus for controlling tcp bidirectional concurrent transmission

Info

Publication number: WO2013167024A2
Application number: PCT/CN2013/079099
Authority: WO
Inventors: 梅笑寒
Original assignee: 中兴通讯股份有限公司
Priority date: 2012-10-25
Filing date: 2013-07-09
Publication date: 2013-11-14
Also published as: CN103780336B; WO2013167024A3; CN103780336A

Abstract

Disclosed are a method and an apparatus for controlling TCP bidirectional concurrent transmission. The method comprises: obtaining a current TCP sending rate and a current TCP receiving rate; judging whether the current TCP receiving rate is greater than the current TCP sending rate; when the current TCP receiving rate is greater than the current TCP sending rate, judging whether the current TCP sending rate is greater than an uplink rate threshold; and when the current TCP sending rate is greater than the uplink rate threshold, suspending sending of a TCP data packet, and preferentially sending a TCP reply response. By means of the present invention, threshold data is obtained by using broadcast uplink/downlink configuration information in system information of a network, and the threshold data obtaining manner is simple, convenient, and rapid, which facilitates increase of the working efficiency of the whole transmission control; more network transmission traffic resources are allocated to TCP downlink data, so as to ensure that the TCP downlink data is sent in time, increase the traffic of TCP bidirectional concurrent transmission, and maximally use network resources.

Description

TCP bidirectional concurrent transmission control method and device

The present invention relates to the field of communication technologies, and in particular, to a TCP bidirectional concurrent transmission control method and apparatus. Background technique

Transmission Control Protocol (TCP) is a transmission-verification system. The transmission principle is that when data is transmitted between two hosts, the host B sends one or more according to the size of the transmission window. The TCP data packet is encapsulated to the host A, and then waits for the verification of the host A; after receiving the TCP data packet, the host A sends a TCP response response to the received TCP data packet; after receiving the TCP response response, the host B continues to send the subsequent response. TCP data packet. It can be seen from the transmission principle of TCP that the timely transmission of the TCP response response is a guarantee for improving the TCP transmission traffic. However, in a wireless network environment, the traffic of the uplink and downlink is asymmetric according to the characteristics of the service, and the downlink traffic is generally much higher than the uplink traffic. When bidirectional concurrent TCP packet transmission is performed, the terminal simultaneously transmits uplink data (TCP data packet) and downlink data (TCP response response) in the uplink. In this asymmetric uplink and downlink, due to uplink The traffic volume is low, and the uplink data (TCP data packet) affects the timely transmission of downlink data (TCP response response), resulting in a decrease in downlink data traffic. Summary of the invention

The main object of the present invention is to provide a TCP bidirectional concurrent transmission control method and apparatus for effectively improving TCP transmission traffic.

In order to achieve the above object, the technical solution of the present invention is achieved as follows:

A TCP bidirectional concurrent transmission control method includes: Obtaining an uplink rate threshold according to the uplink and downlink configuration information in the network system information; acquiring a current TCP sending rate and a current TCP receiving rate;

Determining whether the current TCP receiving rate is greater than the current TCP sending rate;

When the current TCP receiving rate is greater than the current TCP sending rate, determining whether the current TCP sending rate is greater than the uplink rate threshold;

When the current TCP transmission rate is greater than the uplink rate threshold, the TCP data packet is suspended and the TCP response response is sent preferentially.

The obtaining an uplink rate threshold according to the uplink and downlink configuration information in the network system information includes:

Obtain network system information;

Parsing the uplink and downlink configuration information in the network system information;

Obtaining a maximum rate of TCP transmission according to the uplink and downlink configuration information;

The uplink rate threshold is obtained according to the maximum rate of the TCP transmission.

The uplink and downlink configuration information includes special subframe configuration information and uplink and downlink configuration information.

After the determining whether the current TCP sending rate is greater than the uplink rate threshold, the method further includes: sending a TCP data packet and a TCP response response when the current TCP sending rate is less than or equal to the uplink rate threshold.

The determining, after determining whether the current TCP receiving rate is greater than the current TCP sending rate, includes:

When the current TCP reception rate is less than or equal to the current TCP transmission rate, the TCP data packet and the TCP response are simultaneously sent.

A TCP bidirectional concurrent transmission control device, comprising:

a threshold obtaining module, configured to obtain an uplink rate threshold according to uplink and downlink configuration information in the network system information; The rate is obtained from the ear, and is configured to obtain the current TCP sending rate and the current TCP receiving rate. The rate determining module is configured to determine whether the current TCP receiving rate is greater than the current TCP sending rate.

The threshold determining module is configured to determine whether the current TCP sending rate is greater than an uplink rate threshold when the current TCP receiving rate is greater than the current TCP sending rate.

The sending module is configured to pause sending the TCP data packet and send the TCP response response preferentially when the current TCP sending rate is greater than the uplink rate threshold.

The threshold obtaining module includes:

a system information obtaining unit configured to acquire network system information;

The configuration information parsing unit is configured to parse the uplink and downlink configuration information in the network system information, and the maximum rate obtaining unit is configured to obtain a maximum TCP transmission rate according to the uplink and downlink configuration information.

The threshold rate obtaining unit is configured to obtain an uplink rate threshold according to the maximum rate of the TCP sending.

The sending module is further configured to: simultaneously send a TCP data packet and a TCP response response when the current TCP sending rate is less than or equal to the uplink rate threshold.

The sending module is further configured to: simultaneously send a TCP data packet and a TCP response response when the current TCP receiving rate is less than or equal to the current TCP sending rate.

The invention obtains the threshold data by using the uplink and downlink configuration information broadcasted by the network in the system information, and allocates the network transmission traffic resource to the TCP downlink data. The threshold data acquisition method is simple, convenient and fast, which is beneficial to improving the working efficiency of the entire transmission regulation. To ensure timely transmission of TCP downlink data, thereby improving the transmission traffic of TCP bidirectional concurrency and maximizing the utilization of network resources. DRAWINGS

1 is a flowchart of a first embodiment of a TCP bidirectional concurrent transmission control method according to the present invention; FIG. 2 is a flowchart of a second embodiment of a TCP bidirectional concurrent transmission control method according to the present invention; FIG. 4 is a schematic structural diagram of a first embodiment of a TCP bidirectional concurrent transmission control apparatus according to the present invention; FIG. 5 is a schematic structural diagram of a second embodiment of a TCP bidirectional concurrent transmission control apparatus according to the present invention. detailed description

It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in FIG. 1, FIG. 1 is a flowchart of a first embodiment of a TCP bidirectional concurrent transmission control method according to an embodiment of the present invention. The TCP bidirectional concurrent transmission control method mentioned in this embodiment includes: Step S101: Obtain an uplink rate threshold according to uplink and downlink configuration information in the network system information.

In this embodiment, the uplink and downlink configuration information broadcasted by the network in the system information is used, and the uplink rate threshold is obtained by combining the transmission capability of the terminal. The uplink and downlink configuration information, that is, the slot ratio information, can be easily parsed and obtained in the network system information, and the obtaining manner is very convenient and fast, so that the process of obtaining the uplink rate threshold is also simpler and more convenient, and is beneficial to improving the obtaining uplink rate. The efficiency of the threshold saves time for the subsequent control process and is beneficial for timely regulation of TCP transmission.

Step S102: Obtain a current TCP sending rate and a current TCP receiving rate.

The current TCP transmission rate of the terminal is obtained, and the current uplink traffic of the terminal is obtained. The current TCP reception rate of the terminal is obtained, and the current downlink traffic of the terminal is obtained.

Step S103: Determine whether the current TCP receiving rate is greater than the current TCP sending rate; compare the current TCP receiving and sending rates, and compare the current uplink and downlink traffic.

Step S104: When the current TCP receiving rate is greater than the current TCP sending rate, determine Whether the pre-TCP transmission rate is greater than the uplink rate threshold;

If the comparison result is that the current TCP receiving rate is greater than the current TCP sending rate, or the current downlink traffic is greater than the current uplink traffic, the TCP downlink data (TCP response response) may be affected by the TCP uplink data (TCP data packet). It is necessary to ensure the timely transmission of downlink data.

Step S105: When the current TCP sending rate is greater than the uplink rate threshold, the TCP data packet is suspended and the TCP response response is sent preferentially.

Comparing the current TCP transmission rate with the uplink rate threshold, or comparing the current uplink traffic with the uplink traffic threshold; if the comparison result is that the current TCP transmission rate is greater than the uplink rate threshold, or the current uplink traffic is greater than the uplink traffic threshold, then TCP Uplink data has affected the timely transmission of TCP downlink data. It is necessary to limit the traffic of uplink data, and allocate network traffic traffic resources to TCP downlink data transmission to ensure timely transmission of TCP downlink data (TCP response response) until the current TCP transmission. The rate is less than or equal to the uplink rate threshold, and then the TCP data packet is continuously sent, thereby improving the transmission traffic when the TCP is bidirectionally concurrent, and maximizing the utilization of the network resources. Meanwhile, the threshold data is obtained by using the uplink and downlink configuration information broadcasted by the network in the system information. The obtaining method is simple, convenient and fast, and is beneficial to improving the working efficiency of the entire transmission regulation.

As shown in FIG. 2, FIG. 2 is a flowchart of a second embodiment of a TCP bidirectional concurrent transmission control method according to an embodiment of the present invention. In this embodiment, the steps of obtaining the uplink rate threshold are described in detail on the basis of the embodiment shown in FIG. 1, which specifically includes:

Step S201, acquiring network system information;

The network system information in this embodiment is mainly broadcast information in TD-LTE (Time Division Long Term Evolution) system information.

Step S202, parsing uplink and downlink configuration information in the network system information;

The uplink and downlink configuration information includes special subframe configuration information and uplink and downlink configuration information. The specific configuration information is shown in the following table:

Step S203: Obtain a maximum TCP transmission rate according to the uplink and downlink configuration information.

Step S204: Obtain an uplink rate threshold according to a maximum rate of TCP transmission.

Combine the uplink and downlink configuration information with the transmission capability of the terminal to obtain the maximum rate of TCP uplink transmission in an ideal state, and obtain an uplink rate threshold or an uplink traffic threshold.

In this embodiment, the uplink and downlink configuration information broadcasted by the network in the system information is used to obtain the TCP uplink rate threshold or the uplink traffic threshold, and the uplink and downlink traffic distribution is adjusted according to the threshold data and the actual data, the uplink data traffic is restricted, and the TCP response response is improved. The priority ensures the downstream data traffic, which effectively improves the TCP bidirectional concurrent data traffic and makes full use of network resources.

As shown in FIG. 3, FIG. 3 is a flowchart of a third embodiment of a TCP bidirectional concurrent transmission control method according to an embodiment of the present invention. The TCP bidirectional concurrent transmission control method mentioned in this embodiment includes: Step S301: Obtain an uplink rate threshold according to uplink and downlink configuration information in the network system information.

Step S302: Acquire a current TCP sending rate and a current TCP receiving rate.

Step S303, determining whether the current TCP receiving rate is greater than the current TCP sending rate; if yes, executing step S304; if not, executing step S306;

Step S304, determining whether the current TCP transmission rate is greater than an uplink rate threshold; if yes, Then step S305 is performed; if no, step S306 is performed;

Step S305, suspending the sending of the TCP data packet, and preferentially sending the TCP response response; Step S306, simultaneously transmitting the TCP data packet and the TCP response response.

This embodiment is based on the embodiment shown in FIG. 1 , when comparing the current TCP receiving and sending rates, or comparing the current uplink and downlink traffic, if the comparison result is that the current TCP receiving rate is less than or equal to the current TCP sending rate. If the current downlink traffic is less than or equal to the current uplink traffic, the TCP downlink data is not affected by the uplink data, and the uplink and downlink data can be simultaneously sent to implement normal TCP bidirectional concurrent transmission. In addition, when the current TCP transmission rate is compared with the uplink rate threshold, or when the current uplink traffic is compared with the uplink traffic threshold, if the comparison result is that the current TCP transmission rate is less than or equal to the uplink rate threshold, or the current uplink traffic is less than or equal to When the upstream traffic threshold is reached, it can also be explained that the TCP downlink data is not affected by the uplink data, and the uplink and downlink data can be simultaneously transmitted to implement normal TCP bidirectional concurrent transmission. In this embodiment, the TCP transmission traffic allocation is dynamically adjusted according to the current uplink and downlink rate or traffic, and the transmission traffic during TCP bidirectional concurrency is effectively improved, and the network resources are fully utilized.

As shown in FIG. 4, FIG. 4 is a schematic structural diagram of a first embodiment of a TCP bidirectional concurrent transmission control apparatus according to an embodiment of the present invention. The TCP bidirectional concurrent transmission control apparatus mentioned in this embodiment includes: a threshold obtaining module 10 configured to obtain an uplink rate threshold according to uplink and downlink configuration information in the network system information;

The rate is obtained from the ear 20, configured to obtain the current TCP transmission rate and the current TCP reception rate;

The rate determining module 30 is configured to determine whether the current TCP receiving rate is greater than a current TCP sending rate.

The threshold determining module 40 is configured to determine whether the current TCP sending rate is greater than an uplink rate threshold when the current TCP receiving rate is greater than the current TCP sending rate.

The sending module 50 is configured to pause when the current TCP sending rate is greater than the uplink rate threshold. Send a TCP data packet and send a TCP response response first.

In this embodiment, the uplink and downlink configuration information broadcasted by the network in the system information is used, and the uplink rate threshold is obtained by combining the transmission capability of the terminal. The uplink and downlink configuration information, that is, the slot ratio information, can be easily parsed and obtained in the network system information, and the obtaining manner is very convenient and fast, so that the process of obtaining the uplink rate threshold is also simpler and more convenient, and is beneficial to improving the obtaining uplink rate. The efficiency of the threshold saves time for the subsequent control process and is beneficial for timely regulation of TCP transmission. The current TCP transmission rate of the terminal can be obtained, and the current uplink traffic of the terminal can be obtained. The current downlink traffic of the terminal can be obtained by the current TCP receiving rate of the terminal. The current TCP reception and transmission rate can be compared, and the current uplink and downlink traffic can also be compared. If the comparison result is that the current TCP receiving rate is greater than the current TCP sending rate, or the current downlink traffic is greater than the current uplink traffic, the transmission of the TCP downlink data (TCP response response) may be affected by the TCP uplink data (TCP data packet). It is necessary to ensure the timely transmission of downlink data. Comparing the current TCP transmission rate with the uplink rate threshold, or comparing the current uplink traffic with the uplink traffic threshold; if the comparison result is that the current TCP transmission rate is greater than the uplink rate threshold, or the current uplink traffic is greater than the uplink traffic threshold, then TCP Uplink data has affected the timely transmission of TCP downlink data. It is necessary to limit the traffic of uplink data, and allocate network traffic traffic resources to TCP downlink data transmission to ensure timely transmission of TCP downlink data (TCP response response) until the current TCP transmission. The rate is less than or equal to the uplink rate threshold, and then the TCP data packet is continuously sent, thereby improving the transmission traffic when the TCP is bidirectionally concurrent, and maximizing the utilization of the network resources. Meanwhile, the threshold data is obtained by using the uplink and downlink configuration information broadcasted by the network in the system information. The obtaining method is simple, convenient and fast, and is beneficial to improving the working efficiency of the entire transmission regulation.

As shown in FIG. 5, FIG. 5 is a schematic structural diagram of a second embodiment of a TCP bidirectional concurrent transmission control apparatus according to an embodiment of the present invention. The structure of the threshold obtaining module 10 is described in detail on the basis of the embodiment shown in FIG. 4, and the threshold obtaining module 10 specifically includes:

The system information obtaining unit 11 is configured to acquire network system information. The configuration information parsing unit 12 is configured to parse the uplink and downlink configuration information in the network system information. The maximum rate obtaining unit 13 is configured to obtain a maximum TCP transmission rate according to the uplink and downlink configuration information.

The threshold rate obtaining unit 14 is configured to obtain an uplink rate threshold according to a maximum rate of TCP transmission.

The network system information in this embodiment is mainly broadcast information in TD-LTE (Time Division Long Term Evolution) system information. The uplink and downlink configuration information includes special subframe configuration information and uplink and downlink configuration information. The specific configuration information is as follows:

Combine the uplink and downlink configuration information with the transmission capability of the terminal to obtain the maximum rate of TCP uplink transmission in an ideal state, and obtain an uplink rate threshold or an uplink traffic threshold. In this embodiment, the uplink and downlink configuration information broadcasted by the network in the system information is used to obtain the TCP uplink rate threshold or the uplink traffic threshold, and the uplink and downlink traffic distribution is adjusted according to the threshold data and the actual data, the uplink data traffic is restricted, and the TCP response response is improved. The priority ensures the downstream data traffic, which effectively improves the TCP bidirectional concurrent data traffic and makes full use of network resources.

In the embodiment of the present invention, the sending module 50 is further configured to: when the current TCP sending rate is less than or equal to the uplink rate threshold, simultaneously send the TCP data packet and the TCP response response; When the TCP reception rate is less than or equal to the current TCP transmission rate, the TCP data packet and the TCP response are simultaneously sent.

In this embodiment, when comparing the current TCP receiving and sending rates, or comparing the current uplink and downlink traffic, if the comparison result is that the current TCP receiving rate is less than or equal to the current TCP sending rate, or the current downlink traffic is less than or equal to the current uplink. The traffic indicates that the TCP downlink data is not affected by the uplink data, and the uplink and downlink data can be simultaneously transmitted to implement normal TCP bidirectional concurrent transmission. In addition, when the current TCP transmission rate is compared with the uplink rate threshold, or when the current uplink traffic is compared with the uplink traffic threshold, if the comparison result is that the current TCP transmission rate is less than or equal to the uplink rate threshold, or the current uplink traffic is less than or equal to When the upstream traffic threshold is reached, it can also be explained that the TCP downlink data is not affected by the uplink data, and the uplink and downlink data can be simultaneously transmitted to implement normal TCP bidirectional concurrent transmission. In this embodiment, the TCP transmission traffic allocation is dynamically adjusted according to the current uplink and downlink rate or traffic, which effectively improves the transmission traffic when the TCP is bidirectionally concurrent, and fully utilizes network resources.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Industrial applicability

The embodiment of the invention provides a TCP bidirectional concurrent transmission control method and device, which acquires the current TCP transmission rate and the current TCP reception rate; determines whether the current TCP reception rate is greater than the current TCP transmission rate; and the current TCP reception rate is greater than the current TCP transmission rate. When the current TCP transmission rate is greater than the uplink rate threshold, when the current TCP transmission rate is greater than the uplink rate threshold, the TCP data packet is suspended and the TCP response response is sent preferentially. The embodiment of the present invention obtains the threshold data by using the uplink and downlink configuration information broadcasted by the network in the system information, and the threshold data obtaining manner is simple, convenient, and fast, which is beneficial to improving the working efficiency of the entire transmission and control, and allocating network transmission traffic resources to the TCP downlink. The data ensures timely transmission of TCP downlink data, improves transmission traffic when TCP is bidirectionally concurrent, and maximizes utilization of network resources.

Claims

claims

1. A TCP bidirectional concurrent transmission control method, including:

Obtain the uplink rate threshold according to the uplink and downlink configuration information in the network system information; obtain the current TCP sending rate and the current TCP receiving rate;

Determine whether the current TCP receiving rate is greater than the current TCP sending rate;

When the current TCP receiving rate is greater than the current TCP sending rate, determine whether the current TCP sending rate is greater than the uplink rate threshold;

When the current TCP sending rate is greater than the uplink rate threshold, the sending of TCP data packets is suspended, and the TCP response response is sent first.

2. The method according to claim 1, wherein said obtaining the uplink rate threshold according to the uplink and downlink configuration information in the network system information includes:

Obtain network system information;

Parse the uplink and downlink configuration information in the network system information;

According to the uplink and downlink configuration information, obtain the TCP sending maximum rate;

According to the maximum TCP sending rate, the uplink rate threshold is obtained.

3. The method according to claim 2, wherein the uplink and downlink configuration information includes special subframe configuration information and uplink and downlink configuration information.

4. The method according to claim 2 or 3, wherein the determining whether the current TCP sending rate is greater than the uplink rate threshold further includes:

When the current TCP sending rate is less than or equal to the uplink rate threshold, TCP data packets and TCP response responses are sent simultaneously.

5. The method according to claim 4, wherein the determining whether the current TCP receiving rate is greater than the current TCP sending rate further includes:

When the current TCP receiving rate is less than or equal to the current TCP sending rate, the TCP data packet and the TCP response response are sent simultaneously.

6. A TCP bidirectional concurrent transmission control device, including:

The threshold acquisition module is configured to obtain the uplink rate threshold based on the uplink and downlink configuration information in the network system information;

The rate acquisition module 4 is configured to obtain the current TCP sending rate and the current TCP receiving rate; the rate judgment module is configured to determine whether the current TCP receiving rate is greater than the current TCP sending rate;

The threshold judgment module is configured to determine whether the current TCP sending rate is greater than the uplink rate threshold when the current TCP receiving rate is greater than the current TCP sending rate;

The sending module is configured to suspend sending TCP data packets and send TCP response responses first when the current TCP sending rate is greater than the uplink rate threshold.

7. The device according to claim 6, wherein the threshold acquisition module includes: a system information acquisition unit configured to acquire network system information;

The configuration information parsing unit is configured to parse the uplink and downlink configuration information in the network system information; the maximum rate obtaining unit is configured to obtain the TCP sending maximum rate based on the uplink and downlink configuration information;

The threshold rate obtaining unit is configured to obtain the uplink rate threshold according to the TCP maximum sending rate.

8. The device according to claim 7, wherein the uplink and downlink configuration information includes special subframe configuration information and uplink and downlink configuration information.

9. The device according to claim 7 or 8, wherein the sending module is further configured to simultaneously send TCP data packets and TCP response responses when the current TCP sending rate is less than or equal to the uplink rate threshold.

10. The device according to claim 9, wherein the sending module is further configured to simultaneously send a TCP data packet and a TCP response when the current TCP receiving rate is less than or equal to the current TCP sending rate.