WO2016169050A1

WO2016169050A1 - Method and device for establishing mptcp sub-stream

Info

Publication number: WO2016169050A1
Application number: PCT/CN2015/077396
Authority: WO
Inventors: 魏鑫鹏
Original assignee: 华为技术有限公司
Priority date: 2015-04-24
Filing date: 2015-04-24
Publication date: 2016-10-27
Also published as: CN107113285B; CN107113285A

Abstract

Provided are a method and device for establishing an MPTCP sub-stream, which are used for solving the problem existing in the prior art that when an MPTCP terminal initiates a sub-stream establishment request to the same destination address + port number again in the case where the establishment of an MPTCP sub-stream fails, the MPTCP sub-stream cannot be established successfully, thus resulting in the situation that the MPTCP terminal can no longer make full use of multipath functions of an MPTCP. The method comprises: a first terminal sending a first sub-stream establishment request, the first sub-stream establishment request being used for indicating the establishment of a new MPTCP sub-stream; the first terminal receiving a sub-stream establishment refusal response, the sub-stream establishment refusal response carrying a reason why the new MPTCP sub-stream is not allowed to be established; the first terminal sending a second sub-stream establishment request according to the reason and a pre-set strategy, the second sub-stream establishment request being used for indicating the establishment of a new MPTCP sub-stream. The present invention is applied to the field of wireless communications.

Description

Method and device for establishing MPTCP substream

Technical field

The present invention relates to the field of wireless communications, and in particular, to a method and a device for establishing a multipath Transmission Control Protocol (MPTCP) MPTCP substream.

Background technique

In the standard Transmission Control Protocol (TCP) protocol, each connection uses only one path for transmission. However, in the new mobile Internet environment, different wireless access technologies are integrated, and the terminal has multiple network interfaces, such as Wireless Fidelity (WiFi) and cellular network interfaces. At this time, there are multiple available paths between two mutually communicating terminals. If only one path is still used according to the standard TCP protocol, other path resources are wasted. On the other hand, more and more applications on the current terminal require Internet access. If these applications can simultaneously access multiple paths through different interfaces, a higher level of user experience can be guaranteed, and the wireless network can be reduced due to link changes. The characteristics of high bit error rate are affected. The Internet Engineering Task Force (IETF) is based on this purpose to establish an MPTCP working group to study MPTCP.

As shown in Figure 1, the core idea of MPTCP is to add an MPTCP layer supporting multipath transmission between the application layer and the transport layer, and divide the traditional TCP data into multiple TCPMPTCP substreams, and different TCPMPTCP substreams are transmitted along different paths. Aggregate at the terminal. The original TCP layer only works on the MPTCP substream, so that MPTCP is compatible with the original TCP, transparent to other layers of the network, and the network does not have to be changed too much.

Although MPTCP technology can enable terminals to communicate using multiple interfaces at the same time, MPTCP requires both parties participating in the communication to support MPTCP at the same time. When one of the communicating parties does not support MPTCP, MPTCP cannot be used for communication. In order to enable a terminal having MPTCP capability to communicate with a terminal having no MPTCP capability, the concept of an MPTCP proxy has been proposed in the prior art. The ultimate goal of the MPTCP proxy is to end the MPTCP terminal with TCP. The mapping between the MPTCP session and the TCP session is implemented between the terminals.

However, when the MPTCP proxy is deployed by the operator, when the MPTCP terminal has established an MPTCP session through the MPTCP proxy, then usually the MPTCP proxy only allows the MPTCP terminal to use the wireless access point deployed by the operator to establish the MPTCP substream. Or for some other reasons, such as the current load of the MPTCP proxy is too heavy, etc. to reject the establishment of a new substream of MPTCP. At this time, if the MPTCP terminal establishes a new MPTCP substream with the MPTCP proxy, the MPTCP subflow may be established. failure.

In the existing mechanism [RFC6824], if the MPTCP proxy fails to establish the MPTCP subflow for security reasons, the MPTCP terminal should not initiate a subflow setup request to the same destination address + port number, which will result in the MPTCP terminal being no longer available. Fully utilize the multipathing capabilities of MPTCP.

Summary of the invention

The embodiment of the present invention provides a method for establishing an MPTCP sub-flow and related devices, so as to at least solve the problem that if the MPTCP sub-flow fails to be established in the prior art, the MPTCP terminal initiates a sub-flow establishment request to the same destination address + port number, and the MPTCP sub- The flow cannot be established successfully, which causes the MPTCP terminal to no longer fully utilize the multipath function of MPTCP.

To achieve the above objective, the embodiments of the present invention provide the following technical solutions:

In a first aspect, a method for establishing a multi-path transmission control protocol MPTCP sub-flow is provided, where the method includes:

The first terminal sends a first sub-flow establishment request, where the first sub-flow establishment request is used to indicate that the MPTCP new sub-flow is established;

The first terminal receives a sub-flow establishment reject response, and the sub-flow establishment reject response carries a reason for not allowing the MPTCP new sub-flow to be established;

The first terminal sends a second sub-flow establishment request according to the cause and the preset policy, where the second sub-flow establishment request is used to indicate that the MPTCP new sub-flow is established.

In a first possible implementation manner of the first aspect, in combination with the first aspect, the first terminal sends a first sub-flow establishment request, including:

The first terminal sends a sub-flow establishment request to the MPTCP proxy, where the first sub-flow setup request is used to instruct the MPTCP proxy to establish an MPTCP new sub-flow.

In a second possible implementation manner of the first aspect, in combination with the first possible implementation manner of the first aspect, the reason for not allowing the MPTCP new substream to be established includes:

The MPTCP proxy prohibits the first terminal from using the current access point to initiate an MPTCP substream; or

The current load of the MPTCP proxy is not less than a first threshold; or,

The number of MPTCP substreams on the MPTCP connection established by the first terminal by the MPTCP proxy is not less than a second threshold.

In a third possible implementation manner of the first aspect, in combination with the second possible implementation manner of the first aspect, the preset policy includes:

If the reason why the MPTCP new substream is not allowed to be established is that the MPTCP proxy prohibits the first terminal from using the current access point to initiate an MPTCP subflow, the first terminal stops at the current access point to the The MPTCP proxy sends a substream setup request until the first terminal accesses the new access point and sends the second substream setup request to the MPTCP proxy;

If the reason that the MPTCP new substream is not allowed to be established is that the current load of the MPTCP proxy is not less than a first threshold, the first terminal sends the first to the MPTCP proxy after a first preset time. Two substream establishment requests;

If the reason that the MPTCP new substream is not allowed to be established is that the number of MPTCP substreams on the MPTCP connection established by the first terminal by the MPTCP proxy is not less than a second threshold, the first terminal is The second substream setup request is sent to the MPTCP proxy after the end of at least one other MPTCP substream.

In a fourth possible implementation manner of the first aspect, in combination with the first aspect, the first terminal sends the first sub-flow establishment request, including:

The first terminal sends a first sub-flow establishment request to the second terminal, where the first sub-flow establishment request is used to instruct the second terminal to establish an MPTCP new sub-flow.

In a fifth possible implementation manner of the first aspect, in combination with the fourth possible implementation manner of the first aspect, the reason for not allowing the MPTCP new subflow to be established includes:

The current load of the second terminal is not less than a third threshold; or

The number of MPTCP substreams on the MPTCP connection established by the first terminal by the second terminal is not less than a fourth threshold.

In a sixth possible implementation manner of the first aspect, in combination with the fifth possible implementation manner of the first aspect, the preset policy includes:

If the reason that the new sub-flow of the MPTCP is not allowed to be established is that the current load of the second terminal is not less than a third threshold, the first terminal sends the second terminal to the second terminal after the second preset time. Describe a second substream establishment request;

If the reason that the MPTCP new substream is not allowed to be established is that the number of MPTCP substreams on the MPTCP connection established by the first terminal by the second terminal is not less than a fourth threshold, the first terminal The second substream setup request is sent to the second terminal after the end of at least one other MPTCP substream.

In a second aspect, a method for establishing a multi-path transmission control protocol MPTCP sub-flow is provided, where the method includes:

Receiving a sub-flow establishment request sent by the first terminal, where the sub-flow establishment request is used to indicate that an MPTCP new sub-flow is established;

Determining whether to allow the MPTCP new substream to be established according to the substream establishment request;

If it is determined that the MPTCP new sub-flow is not allowed to be established, the sub-flow establishment reject response is sent to the first terminal, and the sub-flow establishment reject response carries the reason that the MPTCP new sub-flow is not allowed to be established.

In a first possible implementation manner of the second aspect, in combination with the second aspect, the receiving, by the first terminal, the sub-flow establishment request, includes:

The MPTCP proxy receives the substream setup request sent by the first terminal, and the substream setup request is used to instruct the MPTCP proxy to establish an MPTCP new substream.

In a second possible implementation manner of the second aspect, in combination with the first possible implementation manner of the second aspect, the reason for not allowing the MPTCP new subflow to be established includes:

The current load of the MPTCP proxy is not less than a first threshold; or,

In a third possible implementation manner of the second aspect, in combination with the second aspect, the receiving A sub-flow establishment request sent by a terminal, including:

The second terminal receives the sub-flow establishment request sent by the first terminal, where the sub-flow establishment request is used to instruct the second terminal to establish an MPTCP new sub-flow.

In a fourth possible implementation manner of the second aspect, in combination with the third possible implementation manner of the second aspect, the reason for not allowing the new sub-flow of the MPTCP to be established includes:

The current load of the second terminal is not less than a third threshold; or

In a third aspect, a first terminal is provided, where the first terminal includes a sending unit and a receiving unit;

The sending unit is configured to send a first sub-flow establishment request, where the first sub-flow establishment request is used to indicate that a multi-path transmission control protocol MPTCP new sub-flow is established;

The receiving unit is configured to receive a sub-flow establishment rejection response, where the sub-flow establishment rejection response carries a reason that the MPTCP new sub-flow is not allowed to be established;

The sending unit is further configured to send a second sub-flow establishment request according to the cause and a preset policy.

In a first possible implementation manner of the third aspect, in combination with the third aspect, the sending unit is specifically configured to:

Sending a first subflow setup request to the MPTCP proxy, the first subflow setup request being used to instruct the MPTCP proxy to establish an MPTCP new subflow.

In a second possible implementation manner of the third aspect, in combination with the first possible implementation manner of the third aspect, the reason for not allowing the MPTCP new substream to be established includes:

The current load of the MPTCP proxy is not less than a first threshold; or,

In a third possible implementation manner of the third aspect, in combination with the third possible implementation manner of the third aspect, the preset policy includes:

If the reason that the MPTCP new substream is not allowed to be established is that the MPTCP proxy prohibits the first terminal from using the current access point to initiate an MPTCP subflow, the sending unit stops at the current access point to the MPTCP. The proxy sends a sub-flow establishment request, and the second sub-flow establishment request is sent to the MPTCP proxy after the first terminal accesses the new access point;

And if the reason that the MPTCP new substream is not allowed to be established is that the current load of the MPTCP proxy is not less than a first threshold, the sending unit sends the second to the MPTCP proxy after a first preset time. Subflow establishment request;

If the reason that the MPTCP new substream is not allowed to be established is that the number of MPTCP substreams on the MPTCP connection established by the first terminal by the MPTCP proxy is not less than a second threshold, the sending unit is at least After the other MPTCP substream ends, the second substream setup request is sent to the MPTCP proxy.

In a fourth possible implementation manner of the third aspect, in combination with the third aspect, the sending unit is specifically configured to:

Sending a first sub-flow establishment request to the second terminal, where the first sub-flow establishment request is used to instruct the second terminal to establish an MPTCP new sub-flow.

In a fifth possible implementation manner of the third aspect, in combination with the fourth possible implementation manner of the third aspect, the reason that the MPTCP new substream is not allowed to be established includes:

The current load of the second terminal is not less than a third threshold; or

In a sixth possible implementation manner of the third aspect, in combination with the fifth possible implementation manner of the third aspect, the preset policy includes:

If the reason that the new sub-flow of the MPTCP is not allowed to be established is that the current load of the second terminal is not less than a third threshold, the sending unit sends the second terminal to the second terminal after the second preset time. a second substream setup request;

If the reason that the MPTCP new substream is not allowed to be established is that the number of MPTCP substreams on the MPTCP connection established by the first terminal by the second terminal is not less than a fourth threshold, the sending unit is After the at least one other MPTCP substream ends, the second substream setup request is resent to the second terminal.

A fourth aspect provides a device for establishing a multi-path transmission control protocol, an MPTCP sub-flow, where the apparatus for establishing an MPTCP sub-flow includes: a receiving unit, a determining unit, and a sending unit;

The receiving unit is configured to receive a sub-flow establishment request sent by the first terminal, where the sub-flow establishment request is used to indicate that the MPTCP new sub-flow is established;

The determining unit is configured to determine, according to the sub-flow establishment request, whether to allow the MPTCP new sub-flow to be established;

The sending unit is configured to: if the determining unit determines that the MPTCP new sub-flow is not allowed to be established, send a sub-flow establishment reject response to the first terminal, where the sub-flow establishment reject response carries the MPTCP new sub-flow not allowed The reason for the establishment.

In a first possible implementation manner of the fourth aspect, in combination with the fourth aspect, the apparatus for establishing the MPTCP sub-flow is an MPTCP proxy, and the receiving unit is specifically configured to:

Receiving a sub-flow establishment request sent by the first terminal, where the sub-flow establishment request is used to instruct the MPTCP proxy to establish an MPTCP new sub-flow.

In a second possible implementation manner of the fourth aspect, in combination with the first possible implementation manner of the fourth aspect, the reason for not allowing the MPTCP new substream to be established includes:

The current load of the MPTCP proxy is not less than a first threshold; or,

In a third possible implementation manner of the fourth aspect, in combination with the fourth aspect, the device for establishing the MPTCP sub-flow is a second terminal, and the receiving unit is specifically configured to:

Receiving a sub-flow establishment request sent by the first terminal, where the sub-flow establishment request is used to instruct the second terminal to establish an MPTCP new sub-flow.

In a fourth possible implementation manner of the fourth aspect, in combination with the third possible implementation manner of the fourth aspect, the reason that the MPTCP new substream is not allowed to be established includes:

The current load of the second terminal is not less than a third threshold; or

A fifth aspect provides a first terminal of a multipath transmission control protocol, where the first terminal includes a processor, a memory, a bus, and a communication interface;

The memory is configured to store a computer execution instruction, the processor is connected to the memory through the bus, and when the first terminal is running, the processor executes the computer execution instruction stored in the memory to The first terminal is configured to perform the method of establishing an MPTCP substream according to any one of the first aspects.

A sixth aspect provides a device for establishing a multi-path transmission control protocol MPTCP sub-flow, where the apparatus for establishing an MPTCP sub-flow includes a processor, a memory, a bus, and a communication interface;

The memory is configured to store a computer execution instruction, the processor is connected to the memory through the bus, and when the establishing device of the MPTCP substream is running, the processor executes the computer execution of the memory storage And an instruction to cause the establishing means of the MPTCP substream to perform the method of establishing the MPTCP substream according to any one of the second aspects.

In the embodiment of the present invention, if the MPTCP new sub-flow is not allowed to be established, the first terminal receives the sub-flow establishment rejection response, and the sub-flow establishes a rejection response, according to the method and the related device for establishing the MPTCP sub-flow according to the embodiment of the present invention. The reason for not allowing the new sub-flow of the MPTCP to be established is carried. After the first terminal learns that the MPTCP sub-flow is not allowed to be established, the first terminal may re-send the sub-flow establishment request according to the preset policy. For example, if the MPTCP new substream is not allowed to be established because the MPTCP proxy prohibits the first terminal from using the current access point to initiate the MPTCP subflow, the first terminal stops sending the subflow setup request to the MPTCP proxy at the current access point until the After a terminal accesses a new access point, it can send a sub-flow establishment request to the MPTCP proxy. In the prior art, if the MPTCP sub-flow fails to be established, the first terminal initiates a sub-flow setup request to the same destination address+port number, the MPTCP sub-flow cannot be successfully established, and the first terminal cannot fully utilize the MPTCP. The problem of the multipath function is such that even if the MPTCP subflow fails to be established, the first terminal initiates a subflow setup request to the same destination address+port number, and the MPTCP subflow may still be established successfully, thereby making the first terminal sufficient. Take advantage of the multipathing capabilities of MPTCP.

DRAWINGS

FIG. 1 is a schematic diagram of an MPTCP protocol stack according to an embodiment of the present invention;

2 is a schematic diagram of a typical application scenario of an MPTCP according to an embodiment of the present invention;

3 is a schematic structural diagram of an existing mobile network core network;

4 is a schematic flowchart 1 of a method for establishing an MPTCP substream according to an embodiment of the present invention;

FIG. 5 is a second schematic flowchart of a method for establishing an MPTCP subflow according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of a scenario in which an MPTCP subflow establishment failure is provided according to an embodiment of the present invention;

FIG. 7 is a schematic flowchart 3 of a method for establishing an MPTCP subflow according to an embodiment of the present disclosure;

FIG. 8 is a schematic flowchart 4 of a method for establishing an MPTCP sub-flow according to an embodiment of the present invention;

FIG. 9 is a schematic flowchart 5 of a method for establishing an MPTCP substream according to an embodiment of the present disclosure;

10 is a schematic flowchart 6 of a method for establishing an MPTCP substream according to an embodiment of the present invention;

FIG. 11 is a schematic diagram 1 of an interaction method for establishing an MPTCP sub-flow according to an embodiment of the present invention;

FIG. 12 is a schematic diagram 2 of an interaction method for establishing an MPTCP sub-flow according to an embodiment of the present invention;

FIG. 13 is a schematic structural diagram 1 of a first terminal according to an embodiment of the present disclosure;

FIG. 14 is a schematic structural diagram 1 of an apparatus for establishing an MPTCP substream according to an embodiment of the present invention;

FIG. 15 is a second schematic structural diagram of a first terminal according to an embodiment of the present disclosure;

FIG. 16 is a schematic structural diagram 2 of an apparatus for establishing an MPTCP substream according to an embodiment of the present invention.

detailed description

Figure 2 shows a typical application scenario of MPTCP. Terminal A and terminal B are two multi-interfaces (including one WiFi interface and one cellular network interface) that communicate with each other. The IP addresses of the interfaces on the two terminals are A1, A2, and B1, B2. When terminal A wants to use MPTCP to communicate with terminal B, terminal A can simultaneously communicate with terminal B by using the WiFi interface and the cellular network interface, that is, establishing a TCP MPTCP substream on the WiFi interface and the cellular network interface, respectively, so the terminal A and terminal B can simultaneously communicate using two interfaces, thereby increasing communication bandwidth.

Secondly, a brief description of the core network architecture involved in the present invention is given:

Figure 3 shows the architecture of the mobile network core network. The mobile network includes a terminal, an evolved Universal Mobile Telecommunications System (UMTS), an Evolved UMTS Terrestrial Radio Access Network (E-UTRAN), and a Mobility Management Entity (Mobility Management Entity, Abbreviation: MME), General Packet Radio Service (GPRS) Service Support Node (Serving GPRS Support Node, SGSN for short), Home Subscriber Server (Home) Subscriber Server (referred to as: HSS), Serving Gateway (SGW), Packet Data Network Gateway (PGW), and Policy and Charging Rules Function (PCRF) Protocols for interconnection between networks (Internet Protocol, IP for short).

Of course, the core network involved in the embodiment of the present invention may also be a core network in another network or a core network in a fixed network. The embodiment of the present invention is only an example of the existing mobile network core network, and the existing mobile The core network outside the network core network is not specifically limited.

The technical solutions in the embodiments of the present invention will be described with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. In the following description, for purposes of explanation and description In some embodiments, detailed descriptions of well-known devices, circuits, and methods are omitted so as not to obscure the description in unnecessary detail. Throughout the description, the same reference numerals and the same names refer to the same or similar elements.

It should be noted that, in order to facilitate the clear description of the technical solutions of the embodiments of the present invention, in the embodiments of the present invention, the same items or similar items whose functions and functions are substantially the same are used in the words “first” and “second”. For the sake of distinction, those skilled in the art will understand that the words "first", "second" and the like do not limit the quantity and the order of execution.

The embodiment of the present invention provides a method for establishing an MPTCP sub-flow, which is applicable not only when the first terminal knows that it is interacting with the MPTCP proxy, but also when the first terminal does not know that it is interacting with the MPTCP proxy, such as As shown in Figure 4, the method includes:

S401. The first terminal sends a first sub-flow setup request, where the first sub-flow setup request is used to indicate that an MPTCP new sub-flow is established.

The first terminal is a terminal that supports MPTCP, for example, a smart phone supporting MPTCP, a tablet supporting MPTCP, and the like.

S402. The first terminal receives a subflow setup reject response, and the subflow setup reject response carries a reason that does not allow the MPTCP new subflow to be established.

S403. The first terminal sends a second sub-flow establishment request according to the cause and a preset policy, where the second sub-flow establishment request is used to indicate that an MPTCP new sub-flow is established.

In a possible implementation manner, the communication peer end (ie, the second terminal) of the first terminal does not support MPTCP, for example, the second terminal is a TCP terminal. In order to enable communication between the first terminal and the TCP terminal, an MPTCP proxy needs to be added between the first terminal and the TCP terminal to enable mapping between the MPTCP session and the TCP session between the MPTCP terminal and the TCP terminal. In this scenario, as shown in FIG. 5, step S401 specifically includes:

S401a. The first terminal sends a first substream setup request to the MPTCP proxy, where the first subflow setup request is used to instruct the MPTCP proxy to establish an MPTCP new subflow.

Correspondingly, step S403 specifically includes:

S403. The first terminal sends a second subflow setup request to the MPTCP proxy according to the cause and the preset policy, where the second subflow setup request is used to instruct the MPTCP proxy to establish an MPTCP new subflow.

The MPTCP proxy in the embodiment of the present invention may be deployed independently, or may be deployed on the network device of the existing mobile network core network as shown in FIG. 3, such as a network deployed on the PGW or deployed behind the uplink PGW. The device in this embodiment of the present invention does not specifically limit this.

Further, in the step S402, the reason that the MPTCP new substream is not allowed to be established may include:

The current load of the MPTCP proxy is not less than a first threshold; or,

Of course, the reason that the MPTCP proxy does not allow the establishment of the MPTCP new substream may be other. The foregoing is merely an example of providing several possible MPTCP agents that do not allow the establishment of the MPTCP new substream. The embodiment of the present invention does not allow the MPTCP proxy. Other reasons for the establishment of the MPTCP new substream are not specifically limited.

Further, in step S403, the preset policy may include:

If the reason that the MPTCP new substream is not allowed to be established is that the MPTCP proxy prohibits the first terminal from using the current access point to initiate an MPTCP subflow, the first terminal stops at The current access point sends a sub-flow establishment request to the MPTCP proxy, and the second sub-flow establishment request is sent to the MPTCP proxy after the first terminal accesses the new access point;

Exemplarily, as shown in FIG. 6, if the first terminal A uses the MPTCP proxy of the operator A, and has established the MPTCP substream 1 through the Long Term Evolution (LTE) interface, and then passes the The WiFi interface requests to establish the MPTCP substream 2. Then, since the WiFi access point used at this time is other operators (for example, belonging to the operator B), the establishment request of the MPTCP substream 2 is rejected.

In this scenario, in the prior art, since the first terminal A does not know why the MPTCP new substream establishment is rejected, the MPTCP new substream may not be established using the WiFi interface, even if the first terminal A moves to the operator A. The WiFi interface is no longer used to establish a new MPTCP substream within the coverage of the deployed WiFi network. This will cause the first terminal A to no longer fully utilize the multipath function of MPTCP.

In the embodiment of the present invention, the first terminal A receives the sub-flow establishment rejection response returned by the MPTCP proxy, and the sub-flow establishment rejection response carries the reason that the MPTCP proxy does not allow the establishment of the MPTCP new sub-flow, for example, the reason is that the MPTCP proxy prohibits The first terminal A initiates an MPTCP subflow using the current access point. In addition, the first terminal A stops sending a sub-flow establishment request to the MPTCP proxy at the current access point, and sends a second to the MPTCP proxy after the first terminal A accesses the new access point. Subflow setup request. That is, if the first terminal A moves to the coverage of the WiFi network deployed by the operator A, the first terminal A can establish a new MPTCP sub-flow using the WiFi interface, thereby fully utilizing the multi-path function of the MPTCP.

In another possible implementation manner, the communication peer end (ie, the second terminal) of the first terminal supports MPTCP. In this scenario, the first terminal can communicate with the second terminal. As shown in Figure 7 The step S401 specifically includes:

S401b: The first terminal sends a first sub-flow establishment request to the second terminal, where the first sub-flow establishment request is used to instruct the second terminal to establish an MPTCP new sub-flow.

Correspondingly, step S403 specifically includes:

S403b: The first terminal sends a second sub-flow establishment request to the second terminal according to the cause and the preset policy, where the second sub-flow establishment request is used to instruct the second terminal to establish an MPTCP new sub-flow.

The second terminal in the embodiment of the present invention may be a smart phone supporting MPTCP, a tablet computer supporting MPTCP, and the like, and may also be an MPTCP server, which is not specifically limited in this embodiment of the present invention.

The current load of the second terminal is not less than a first threshold; or

The number of MPTCP substreams on the MPTCP connection established by the first terminal by the second terminal is not less than a second threshold.

Of course, the reason why the second terminal does not allow the establishment of the new sub-stream of the MPTCP may be other. The foregoing is merely an example of the reason that the two possible second terminals are not allowed to establish the new sub-flow of the MPTCP. Other reasons why the terminal does not allow MPTCP new substream establishment are not specifically limited.

Further, in step S403, the preset policy may include:

Exemplarily, it is assumed that the number of MPTCP sub-flows on the MPTCP connection established by the first terminal by the second terminal is no more than three, and the first terminal A currently uses the MPTCP established by the second terminal. The number of MPTCP sub-flows on the connection is already three. If the second terminal is to be configured to establish a new MPTCP sub-flow, the MPTCP sub-flow on the MPTCP connection established by the first terminal A through the second terminal at this time is The number is not less than the fourth threshold (the fourth threshold in this example is 3), and the establishment request of the MPTCP substream is rejected.

In this scenario, in the prior art, since the first terminal A does not know why the new MPTCP sub-flow establishment is rejected, the MPTCP new sub-flow may not be established through the second terminal, even if some subsequent MPTCP sub-flows end, the first The number of MPTCP sub-streams on the MPTCP connection established by the terminal A is less than the fourth threshold, and the new MPTCP sub-flow is no longer established by the second terminal. This will result in the first terminal A not being able to fully utilize the MPTCP. Path function.

In the embodiment of the present invention, the first terminal A receives the sub-flow establishment rejection response returned by the second terminal, and the sub-flow establishment rejection response carries the reason that the second terminal does not allow the establishment of the MPTCP new sub-flow, the reason is the first The number of MPTCP sub-streams on the MPTCP connection established by the terminal A through the second terminal is not less than a fourth threshold. Furthermore, the first terminal A sends a second sub-flow establishment request to the second terminal after the end of the other MPTCP sub-flows. That is, if the number of MPTCP substreams on the MPTCP connection established by the first terminal A by the second terminal is less than the fourth threshold, the first terminal A can establish a new MPTCP substream through the second terminal, thereby fully utilizing the MPTCP. Multipathing.

The method for establishing an MPTCP sub-flow according to the embodiment of the present invention, in the embodiment of the present invention, if the MPTCP new sub-flow is not allowed to be established, the first terminal receives the sub-flow establishment rejection response, and the sub-flow establishment rejection response does not allow The reason for the establishment of the new sub-stream of the MPTCP, and the first terminal, after learning the reason that the new sub-flow of the MPTCP is not allowed to be established, may re-send the sub-flow establishment request according to the preset policy. For example, if the MPTCP new substream is not allowed to be established because the MPTCP proxy prohibits the first terminal from using the current access point to initiate the MPTCP subflow, the first terminal stops sending the subflow setup request to the MPTCP proxy at the current access point until the After a terminal accesses a new access point, it can send a sub-flow establishment request to the MPTCP proxy. In the prior art, if the MPTCP sub-flow fails to be established, the first terminal initiates a sub-flow setup request to the same destination address+port number, the MPTCP sub-flow cannot be successfully established, and the first terminal cannot fully utilize the MPTCP. The problem of the multipath function, so that even if the MPTCP subflow fails to be established, the first terminal initiates a subflow setup request to the same destination address + port number, and the MPTCP subflow still It is possible to establish success so that the first terminal fully utilizes the multipath function of MPTCP.

An embodiment of the present invention provides a method for establishing an MPTCP subflow. As shown in FIG. 8, the method includes:

S801. Receive a subflow setup request sent by the first terminal, where the subflow setup request is used to indicate that an MPTCP new subflow is established.

As described above, the first terminal is a terminal that supports MPTCP, for example, a smart phone supporting MPTCP, a tablet supporting MPTCP, and the like.

S802. Determine, according to the sub-flow establishment request, whether to allow the MPTCP new sub-flow to be established.

S803. If it is determined that the MPTCP new sub-flow is not allowed to be established, send a sub-flow establishment rejection response to the first terminal to the first terminal, where the sub-flow establishment rejection response carries the reason that the MPTCP new sub-flow is not allowed to be established. .

Specifically, the executor of the method for establishing the MPTCP sub-flow provided by the embodiment of the present invention may be the second terminal or the MPTCP proxy described in the foregoing method embodiment, which is not specifically limited in this embodiment of the present invention.

When the executor of the method for establishing the MPTCP sub-flow provided by the embodiment of the present invention is the MPTCP proxy described in the foregoing method embodiment, as shown in FIG. 9, step S801 may specifically include:

S801a. The MPTCP proxy receives the subflow setup request sent by the first terminal, where the subflow setup request is used to instruct the MPTCP proxy to establish an MPTCP new subflow.

Further, in step S802, the reason that the MPTCP new substream is not allowed to be established may include:

The current load of the MPTCP proxy is not less than a first threshold; or,

When the executor of the method for establishing the MPTCP sub-flow provided by the embodiment of the present invention is the second terminal in the foregoing method embodiment, as shown in FIG. 10, step S801 may specifically include:

S801b: The second terminal receives the sub-flow establishment request sent by the first terminal, where the sub-flow establishment request is used to instruct the second terminal to establish an MPTCP new sub-flow.

The second terminal in the embodiment of the present invention may support a smart phone of the MPTCP, a tablet computer that supports the MPTCP, and the like, and may also be an MPTCP server, which is not specifically limited in the embodiment of the present invention.

The current load of the second terminal is not less than a third threshold; or

According to the method for establishing an MPTCP sub-flow provided by the embodiment of the present invention, in the embodiment of the present invention, if the MPTCP new sub-flow is not established, the reason that the MPTCP new sub-flow is not allowed to be established is sent to the first terminal, so that the first After the terminal learns that the new sub-flow of the MPTCP is not allowed to be established, the sub-flow establishment request may be sent according to the preset policy. For example, if the MPTCP new substream is not allowed to be established because the MPTCP proxy prohibits the first terminal from using the current access point to initiate the MPTCP subflow, the first terminal stops sending the subflow setup request to the MPTCP proxy at the current access point until the After a terminal accesses a new access point, it can send substream establishment to the MPTCP proxy. request. In the prior art, if the MPTCP sub-flow fails to be established, the first terminal initiates a sub-flow setup request to the same destination address+port number, the MPTCP sub-flow cannot be successfully established, and the first terminal cannot fully utilize the MPTCP. The problem of the multipath function is such that even if the MPTCP subflow fails to be established, the first terminal initiates a subflow setup request to the same destination address+port number, and the MPTCP subflow may still be established successfully, thereby making the first terminal sufficient. Take advantage of the multipathing capabilities of MPTCP.

An embodiment of the present invention provides a method for establishing an MPTCP sub-flow. The interaction between the first terminal and the MPTCP proxy is taken as an example. As shown in FIG. 11, the method includes:

S1101: The first terminal sends a first sub-flow establishment request to the MPTCP proxy, where the first sub-flow setup request is used to instruct the MPTCP proxy to establish an MPTCP new sub-flow.

S1102: The MPTCP proxy receives the substream setup request, and determines whether to allow the MPTCP new subflow to be established according to the subflow setup request.

S1103: If the MPTCP proxy determines that the MPTCP new substream is not allowed to be established, and sends a subflow setup rejection to the first terminal, the subflow setup reject response carries the reason that the MPTCP proxy does not allow the MPTCP new subflow to be established.

S1104: The first terminal receives the subflow setup rejection response.

S1105: The first terminal sends a second subflow setup request to the MPTCP proxy according to the reason that the MPTCP proxy does not allow the MPTCP new subflow to be established and the preset policy, where the second subflow setup request is used to instruct the MPTCP proxy to establish the MPTCP new subroutine. flow.

For the reason that the MPTCP proxy determines that the MPTCP new substream is not allowed to be established, and the corresponding preset policy, refer to the description in the foregoing method embodiment, which is not repeatedly described herein.

Optionally, the embodiment of the present invention provides a method for establishing an MPTCP sub-flow, which is specifically described by using the interaction between the first terminal and the second terminal. As shown in FIG. 12, the method includes:

S1201: The first terminal sends a sub-flow establishment request to the second terminal, where the sub-flow establishment request is used to instruct the second terminal to establish an MPTCP new sub-flow.

S1202: The second terminal receives the sub-flow establishment request, and determines, according to the sub-flow establishment request, whether to allow the MPTCP new sub-flow to be established.

S1203. If the second terminal determines that the MPTCP new sub-flow is not allowed to be established, the sub-flow establishment reject response is sent to the first terminal, and the sub-flow establishment reject response carries the reason that the second terminal does not allow the MPTCP new sub-flow to be established.

S1204. The first terminal receives the subflow setup rejection response.

S1205: The first terminal sends a second sub-flow establishment request to the second terminal according to the reason that the second terminal does not allow the MPTCP new sub-flow to be established and the preset policy, where the second sub-flow establishment request is used to indicate that the second terminal is established. MPTCP new subflow.

For the reason that the second terminal determines that the new sub-flow is not allowed to be established, and the corresponding preset policy, refer to the description in the foregoing method embodiment, which is not described herein again.

The embodiment of FIG. 11 and FIG. 12 is a detailed description of the foregoing embodiment, and the technical effects that can be achieved can also be referred to the above description, and details are not described herein again.

The embodiment of the present invention provides a first terminal 130. As shown in FIG. 13, the first terminal 130 includes a sending unit 1301 and a receiving unit 1302.

The sending unit 1301 is configured to send a first sub-flow establishment request, where the first sub-flow establishment request is used to indicate that a multi-path transmission control protocol (MPTCP) new sub-flow is established.

The receiving unit 1302 is configured to receive a sub-flow establishment rejection response, where the sub-flow establishment rejection response carries a reason that the MPTCP new sub-flow is not allowed to be established.

The sending unit 1301 is further configured to send a second sub-flow establishment request according to the cause and a preset policy, where the second sub-flow establishment request is used to indicate that the MPTCP new sub-flow is established.

In a possible implementation manner, the sending unit 1301 is specifically configured to:

Further, the reason that the MPTCP new substream is not allowed to be established may include:

The MPTCP proxy prohibits the first terminal 130 from using the current access point to initiate an MPTCP substream; or

The current load of the MPTCP proxy is not less than a first threshold; or,

The first terminal 130 is currently connected to the MPTCP connection established by the MPTCP proxy. The number of MPTCP substreams is not less than the second threshold.

Correspondingly, the preset policy may include:

If the reason that the MPTCP new substream is not allowed to be established is that the MPTCP proxy prohibits the first terminal 130 from using the current access point to initiate an MPTCP substream, the sending unit 1301 stops at the current access point. The MPTCP proxy sends a substream setup request until the first terminal 130 accesses the new access point and sends the second substream setup request to the MPTCP proxy.

If the reason that the MPTCP new substream is not allowed to be established is that the current load of the MPTCP proxy is not less than a first threshold, the sending unit 1301 resends the foregoing to the MPTCP proxy after the first preset time. a second substream setup request;

If the reason that the MPTCP new substream is not allowed to be established is that the number of MPTCP substreams on the MPTCP connection established by the first terminal 130 by the MPTCP proxy is not less than a second threshold, the sending unit 1301 The second substream setup request is resent to the MPTCP proxy after the end of at least one other MPTCP substream.

The current load of the second terminal is not less than a third threshold; or

The number of MPTCP substreams on the MPTCP connection established by the first terminal 130 by the second terminal is not less than a fourth threshold.

Correspondingly, the preset policy may include:

If the reason that the new sub-flow of the MPTCP is not allowed to be established is that the current load of the second terminal is not less than a third threshold, the sending unit 1301 may send the second terminal to the second terminal after the second preset time. The second substream establishment request;

If the reason that the MPTCP new substream is not allowed to be established is that the number of MPTCP substreams on the MPTCP connection that the first terminal 130 currently establishes through the second terminal is not less than a fourth threshold, the sending unit 1301 resends the second substream setup request to the second terminal after the end of at least one other MPTCP substream.

It should be noted that, in hardware implementation, the foregoing sending unit 1301 may be implemented by using a transmitter, and the receiving unit 1302 may be implemented by using a receiver. The transmitter and the receiver may be integrated to form a transceiver, which is not limited in this embodiment of the present invention.

Specifically, the method for performing the establishment of the MPTCP sub-flow by the first terminal 130 provided by the embodiment of the present invention may refer to the description of the foregoing method embodiment, and details are not described herein again.

According to the first terminal provided by the embodiment of the present invention, in the embodiment of the present invention, if the MPTCP new substream is not allowed to be established, the first terminal receives the subflow establishment reject response, and the subflow establishment reject response carries the MPTCP new subroutine. After the flow is established, the first terminal may resend the sub-flow establishment request according to the preset policy after learning that the MPTCP sub-flow is not allowed to be established. For example, if the MPTCP new substream is not allowed to be established because the MPTCP proxy prohibits the first terminal from using the current access point to initiate the MPTCP subflow, the first terminal stops sending the subflow setup request to the MPTCP proxy at the current access point until the After a terminal accesses a new access point, it can send a sub-flow establishment request to the MPTCP proxy. In the prior art, if the MPTCP sub-flow fails to be established, the first terminal initiates a sub-flow setup request to the same destination address+port number, the MPTCP sub-flow cannot be successfully established, and the first terminal cannot fully utilize the MPTCP. The problem of the multipath function is such that even if the MPTCP subflow fails to be established, the first terminal initiates a subflow setup request to the same destination address+port number, and the MPTCP subflow may still be established successfully, thereby making the first terminal sufficient. Take advantage of the multipathing capabilities of MPTCP.

The embodiment of the present invention provides an apparatus for establishing an MPTCP sub-flow. As shown in FIG. 14, the apparatus for establishing an MPTCP sub-flow includes: a receiving unit 1401, a determining unit 1402, and a sending unit 1403.

The receiving unit 1401 is configured to receive a sub-flow setup request sent by the first terminal, where the sub-flow setup request is used to indicate that the MPTCP new sub-flow is established.

The determining unit 1402 is configured to determine, according to the sub-flow establishment request, whether to allow the MPTCP new sub-flow to be established.

The sending unit 1403 is configured to: if the determining unit 1402 determines that the MPTCP new sub-flow is not allowed to be established, send a sub-flow establishment reject response to the first terminal, where the sub-flow establishment reject response carries the MPTCP new The reason the subflow is established.

In a possible implementation manner, the establishing unit 140 of the MPTCP sub-flow is an MPTCP proxy; the receiving unit 1401 is specifically configured to:

Further, the reason that the MPTCP new substream is not allowed to be established includes:

The current load of the MPTCP proxy is not less than a first threshold; or,

In a possible implementation manner, the establishing unit 140 of the MPTCP sub-flow is a second terminal, and the receiving unit 1401 is specifically configured to:

The current load of the second terminal is not less than a third threshold; or

It should be noted that, in hardware implementation, the sending unit 1403 may be implemented by using a transmitter, the receiving unit 1401 may be implemented by using a receiver, and the determining unit 1402 may be implemented by using a processor. The transmitter and the receiver may be integrated to form a transceiver, which is not limited in this embodiment of the present invention.

Specifically, the method for establishing the MPTCP sub-flow by the apparatus for establishing the MPTCP sub-flow provided by the embodiment of the present invention may refer to the description of the foregoing method embodiment, and details are not described herein again.

The device for establishing an MPTCP sub-flow according to the embodiment of the present invention, in the embodiment of the present invention, if the device for establishing the MPTCP sub-flow does not allow the establishment of the new sub-stream of the MPTCP, the reason for not allowing the establishment of the new sub-stream of the MPTCP is sent to the A terminal, so that after the first terminal learns the reason that the MPTCP substream is not allowed to be established, the sub-flow establishment request may be sent according to the preset policy. Than For example, if the MPTCP new substream is not allowed to be established because the MPTCP proxy prohibits the first terminal from using the current access point to initiate the MPTCP subflow, the first terminal stops sending the subflow setup request to the MPTCP proxy at the current access point until the After a terminal accesses a new access point, it can send a sub-flow establishment request to the MPTCP proxy. In the prior art, if the MPTCP sub-flow fails to be established, the first terminal initiates a sub-flow setup request to the same destination address+port number, the MPTCP sub-flow cannot be successfully established, and the first terminal cannot fully utilize the MPTCP. The problem of the multipath function is such that even if the MPTCP subflow fails to be established, the first terminal initiates a subflow setup request to the same destination address+port number, and the MPTCP subflow may still be established successfully, thereby making the first terminal sufficient. Take advantage of the multipathing capabilities of MPTCP.

The embodiment of the present invention provides a first terminal 150. As shown in FIG. 15, the first terminal 150 includes a processor 1501, a memory 1502, a bus 1503, and a communication interface 1504. The processor 1501, the memory 1502, and the communication interface 1504 are connected by a bus 1503 and complete mutual communication.

Processor 1501 may be a single core or multi-core central processing unit, or a particular integrated circuit, or one or more integrated circuits configured to implement embodiments of the present invention.

The memory 1502 may be a high speed random access memory 1502 (Random Access Memory, RAM for short) memory 1502 or a non-volatile memory 1502 such as at least one disk memory 1502.

Memory 1502 is for storing computer execution instructions 15021. Specifically, the program code may be included in the computer execution instruction 15021.

When the first terminal 150 is running, the processor 1501 runs the computer execution instruction 15021. The flow of the method for establishing the MPTCP subflow according to any one of the method embodiments of FIG. 4, FIG. 5 and FIG. 7 may be performed.

The first terminal 150 provided in this embodiment can be used to perform the foregoing method. Therefore, the technical effects that can be obtained can also be referred to the description of the foregoing method embodiments, and details are not described herein again.

An embodiment of the present invention provides an apparatus for establishing an MPTCP substream, as shown in FIG. The MPTCP substream establishing means 160 includes a processor 1601, a memory 1602, a bus 1603, and a communication interface 1604. The processor 1601, the memory 1602, and the communication interface 1604 are connected by a bus 1603 and complete mutual communication.

Processor 1601 may be a single core or multi-core central processing unit, or a particular integrated circuit, or one or more integrated circuits configured to implement embodiments of the present invention.

The memory 1602 may be a RAM memory 1602 or a non-volatile memory 1602, such as at least one disk storage 1602.

The memory 1602 is for storing computer execution instructions 16021. Specifically, the program code may be included in the computer execution instruction 16021.

When the setting unit 160 of the MPTCP sub-flow is running, the processor 1601 runs the computer execution instruction 16021. The flow of the method for establishing the MPTCP sub-flow according to any one of the method embodiments is performed. The MPTCP sub-flow establishing device 160 is an MPTCP proxy; when performing the MPTCP sub-flow establishing method flow as described in the method embodiment corresponding to FIG. In the process of establishing the MPTCP sub-flow, the device for establishing the MPTCP sub-flow is the second terminal.

The apparatus for establishing an MPTCP sub-flow provided by this embodiment can be used to perform the foregoing method. Therefore, the technical effects that can be obtained can also be referred to the description of the foregoing method embodiments, and details are not described herein again.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

The above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium. The software functional units described above are stored in a storage medium and include instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform portions of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a RAM, a magnetic disk, or an optical disk, and the like, which can store program codes.

It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not limited thereto; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that The technical solutions described in the foregoing embodiments are modified, or the equivalents of the technical features are replaced. The modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

A method for establishing a multi-path transmission control protocol MPTCP sub-flow, characterized in that the method comprises:

The first terminal sends a first sub-flow establishment request, where the first sub-flow establishment request is used to indicate that the MPTCP new sub-flow is established;

The first terminal receives a sub-flow establishment reject response, and the sub-flow establishment reject response carries a reason for not allowing the MPTCP new sub-flow to be established;

The first terminal sends a second sub-flow establishment request according to the cause and the preset policy, where the second sub-flow establishment request is used to indicate that the MPTCP new sub-flow is established.
The method according to claim 1, wherein the sending, by the first terminal, the first sub-flow establishment request comprises:

The first terminal sends a first sub-flow setup request to the MPTCP proxy, where the first sub-flow setup request is used to instruct the MPTCP proxy to establish an MPTCP new sub-flow.
The method according to claim 2, wherein the reason for not allowing the MPTCP new substream to be established comprises:

The MPTCP proxy prohibits the first terminal from using the current access point to initiate an MPTCP substream; or

The current load of the MPTCP proxy is not less than a first threshold; or,

The number of MPTCP substreams on the MPTCP connection established by the first terminal by the MPTCP proxy is not less than a second threshold.
The method according to claim 3, wherein the preset policy comprises:

If the reason why the MPTCP new substream is not allowed to be established is that the MPTCP proxy prohibits the first terminal from using the current access point to initiate an MPTCP subflow, the first terminal stops at the current access point to the The MPTCP proxy sends a substream setup request until the first terminal accesses the new access point and sends the second substream setup request to the MPTCP proxy;

If the reason that the MPTCP new substream is not allowed to be established is that the current load of the MPTCP proxy is not less than a first threshold, the first terminal sends the first to the MPTCP proxy after a first preset time. Two substream establishment requests;

If the reason that the MPTCP new substream is not allowed to be established is that the first terminal is currently passing The number of the MPTCP sub-flows on the MPTCP connection established by the MPTCP proxy is not less than a second threshold, and the first terminal sends the second sub-flow setup request to the MPTCP proxy after the at least one other MPTCP sub-stream ends. .
The method according to claim 1, wherein the sending, by the first terminal, the first sub-flow establishment request comprises:

The first terminal sends a first sub-flow establishment request to the second terminal, where the first sub-flow establishment request is used to instruct the second terminal to establish an MPTCP new sub-flow.
The method according to claim 5, wherein the reason for not allowing the MPTCP new substream to be established includes:

The current load of the second terminal is not less than a third threshold; or

The number of MPTCP substreams on the MPTCP connection established by the first terminal by the second terminal is not less than a fourth threshold.
The method according to claim 6, wherein the preset policy comprises:

If the reason that the new sub-flow of the MPTCP is not allowed to be established is that the current load of the second terminal is not less than a third threshold, the first terminal sends the second terminal to the second terminal after the second preset time. Describe a second substream establishment request;

If the reason that the MPTCP new substream is not allowed to be established is that the number of MPTCP substreams on the MPTCP connection established by the first terminal by the second terminal is not less than a fourth threshold, the first terminal The second substream setup request is sent to the second terminal after the end of at least one other MPTCP substream.
A method for establishing a multi-path transmission control protocol MPTCP sub-flow, characterized in that the method comprises:

Receiving a sub-flow establishment request sent by the first terminal, where the sub-flow establishment request is used to indicate that an MPTCP new sub-flow is established;

Determining whether to allow the MPTCP new substream to be established according to the substream establishment request;

If it is determined that the MPTCP new sub-flow is not allowed to be established, the sub-flow establishment reject response is sent to the first terminal, and the sub-flow establishment reject response carries the reason that the MPTCP new sub-flow is not allowed to be established.
The method according to claim 8, wherein the receiving the sub-flow establishment request sent by the first terminal comprises:

The MPTCP proxy receives the substream setup request sent by the first terminal, and the substream setup request is used to instruct the MPTCP proxy to establish an MPTCP new substream.
The method according to claim 9, wherein the reason why the MPTCP new substream is not allowed to be established includes:

The MPTCP proxy prohibits the first terminal from using the current access point to initiate an MPTCP substream; or

The current load of the MPTCP proxy is not less than a first threshold; or,

The number of MPTCP substreams on the MPTCP connection established by the first terminal by the MPTCP proxy is not less than a second threshold.
The method according to claim 8, wherein the receiving the sub-flow establishment request sent by the first terminal comprises:

The second terminal receives the sub-flow establishment request sent by the first terminal, where the sub-flow establishment request is used to instruct the second terminal to establish an MPTCP new sub-flow.
The method according to claim 11, wherein the reason for not allowing the MPTCP new substream to be established includes:

The current load of the second terminal is not less than a third threshold; or

The number of MPTCP substreams on the MPTCP connection established by the first terminal by the second terminal is not less than a fourth threshold.
A first terminal, where the first terminal includes a sending unit and a receiving unit;

The sending unit is configured to send a first sub-flow establishment request, where the first sub-flow establishment request is used to indicate that a multi-path transmission control protocol MPTCP new sub-flow is established;

The receiving unit is configured to receive a sub-flow establishment rejection response, where the sub-flow establishment rejection response carries a reason that the MPTCP new sub-flow is not allowed to be established;

The sending unit is further configured to send a second sub-flow establishment request according to the cause and a preset policy, where the second sub-flow establishment request is used to indicate that the MPTCP new sub-flow is established.
The first terminal according to claim 13, wherein the sending unit is specifically configured to:

Sending a first substream setup request to the MPTCP proxy, the first subflow setup request being used to refer to The MPTCP proxy is shown to establish a new substream of MPTCP.
The first terminal according to claim 14, wherein the reason for not allowing the MPTCP new substream to be established includes:

The MPTCP proxy prohibits the first terminal from using the current access point to initiate an MPTCP substream; or

The current load of the MPTCP proxy is not less than a first threshold; or,

The number of MPTCP substreams on the MPTCP connection established by the first terminal by the MPTCP proxy is not less than a second threshold.
The first terminal according to claim 15, wherein the preset policy comprises:

If the reason that the MPTCP new substream is not allowed to be established is that the MPTCP proxy prohibits the first terminal from using the current access point to initiate an MPTCP subflow, the sending unit stops at the current access point to the MPTCP. The proxy sends a sub-flow establishment request, and the second sub-flow establishment request is sent to the MPTCP proxy after the first terminal accesses the new access point;

And if the reason that the MPTCP new substream is not allowed to be established is that the current load of the MPTCP proxy is not less than a first threshold, the sending unit sends the second to the MPTCP proxy after a first preset time. Subflow establishment request;

If the reason that the MPTCP new substream is not allowed to be established is that the number of MPTCP substreams on the MPTCP connection established by the first terminal by the MPTCP proxy is not less than a second threshold, the sending unit is at least After the other MPTCP substream ends, the second substream setup request is sent to the MPTCP proxy.
The first terminal according to claim 13, wherein the sending unit is specifically configured to:

Sending a first sub-flow establishment request to the second terminal, where the first sub-flow establishment request is used to instruct the second terminal to establish an MPTCP new sub-flow.
The first terminal according to claim 17, wherein the reason for not allowing the MPTCP new substream to be established includes:

The current load of the second terminal is not less than a third threshold; or

The MPTCP on the MPTCP connection established by the first terminal by the second terminal The number of streams is not less than the fourth threshold.
The first terminal according to claim 18, wherein the preset policy comprises:

If the reason that the new sub-flow of the MPTCP is not allowed to be established is that the current load of the second terminal is not less than a third threshold, the sending unit sends the second terminal to the second terminal after the second preset time. a second substream setup request;

If the reason that the MPTCP new substream is not allowed to be established is that the number of MPTCP substreams on the MPTCP connection established by the first terminal by the second terminal is not less than a fourth threshold, the sending unit is After the at least one other MPTCP substream ends, the second substream setup request is sent to the second terminal.
An apparatus for establishing a multi-path transmission control protocol, the MPTCP sub-flow, is characterized in that: the apparatus for establishing an MPTCP sub-flow includes: a receiving unit, a determining unit, and a sending unit;

The receiving unit is configured to receive a sub-flow establishment request sent by the first terminal, where the sub-flow establishment request is used to indicate that the MPTCP new sub-flow is established;

The determining unit is configured to determine, according to the sub-flow establishment request, whether to allow the MPTCP new sub-flow to be established;

The sending unit is configured to: if the determining unit determines that the MPTCP new sub-flow is not allowed to be established, send a sub-flow establishment reject response to the first terminal, where the sub-flow establishment reject response carries the MPTCP new sub-flow not allowed The reason for the establishment.
The apparatus for establishing an MPTCP sub-flow according to claim 20, wherein the apparatus for establishing the MPTCP sub-flow is an MPTCP proxy; and the receiving unit is specifically configured to:

Receiving a sub-flow establishment request sent by the first terminal, where the sub-flow establishment request is used to instruct the MPTCP proxy to establish an MPTCP new sub-flow.
The apparatus for establishing an MPTCP substream according to claim 21, wherein the reason why the MPTCP new substream is not allowed to be established includes:

The MPTCP proxy prohibits the first terminal from using the current access point to initiate an MPTCP substream; or

The current load of the MPTCP proxy is not less than a first threshold; or,

The MPTCP on the MPTCP connection established by the first terminal by the MPTCP proxy The number of substreams is not less than the second threshold.
The device for establishing an MPTCP sub-flow according to claim 20, wherein the device for establishing the MPTCP sub-flow is a second terminal; and the receiving unit is specifically configured to:

Receiving a sub-flow establishment request sent by the first terminal, where the sub-flow establishment request is used to instruct the second terminal to establish an MPTCP new sub-flow.
The apparatus for establishing an MPTCP substream according to claim 23, wherein the reason for not allowing the MPTCP new substream to be established includes:

The current load of the second terminal is not less than a third threshold; or

The number of MPTCP substreams on the MPTCP connection established by the first terminal by the second terminal is not less than a fourth threshold.
A first terminal, the first terminal comprising a processor, a memory, a bus, and a communication interface;

The memory is configured to store a computer execution instruction, the processor is connected to the memory through the bus, and when the first terminal is running, the processor executes the computer execution instruction stored in the memory to The first terminal is configured to perform the method of establishing an MPTCP substream according to any one of claims 1-7.
An apparatus for establishing a multi-path transmission control protocol MPTCP sub-flow, wherein the apparatus for establishing an MPTCP sub-flow includes a processor, a memory, a bus, and a communication interface;

The memory is configured to store a computer execution instruction, the processor is connected to the memory through the bus, and when the establishing device of the MPTCP substream is running, the processor executes the computer execution of the memory storage And an instruction to cause the establishing means of the MPTCP substream to perform the method of establishing the MPTCP substream according to any one of claims 8-12.