CN115665887A

CN115665887A - Connection establishing method, device, equipment and storage medium

Info

Publication number: CN115665887A
Application number: CN202211196602.XA
Authority: CN
Inventors: 吴昊; 尹蕾
Original assignee: Yibin Jimi Photoelectric Co Ltd
Current assignee: Yibin Jimi Photoelectric Co Ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2023-01-31

Abstract

The invention discloses a connection establishing method, a device, equipment and a storage medium. The method comprises the following steps: the first equipment sends a connection request message to the multilink access point equipment, wherein the message comprises at least one of the identification of the first equipment and an indication of whether a link is newly added for the connected equipment; the multilink access point equipment judges whether connection with the first equipment is established or not according to the connection request message, and sends a connection response message to the first equipment, wherein the message comprises an indication of whether connection establishment is agreed or not and a connection identifier set according to a judgment result. When the multilink access point equipment is newly configured with a link, the terminal can actively or passively obtain the reconfiguration information of the connection response equipment, so that the terminal can select a link configuration mode more favorable for the terminal according to the configuration change of the access multilink access point equipment, thereby improving the utilization rate of wireless resources, improving the data transmission rate and reducing the service delay.

Description

Connection establishing method, device, equipment and storage medium

Technical Field

The present invention relates to the field of wireless communications, and in particular, to a connection establishment method, apparatus, device, and storage medium.

Background

The 802.11be system, also called an Extra High Throughput (EHT) system, enhances functionality through a series of system features and a variety of mechanisms to achieve extra High Throughput. As the use of Wireless Local Area Networks (WLANs) continues to grow, it becomes increasingly important to provide wireless data services in many environments, such as homes, businesses, and hot spots. In particular, video traffic will continue to be the dominant type of traffic in many WLAN deployments. With the advent of 4k and 8k video (uncompressed rate of 20 Gbps), the throughput requirements for these applications are constantly evolving. New high throughput, low latency applications such as virtual reality or augmented reality, gaming, remote offices, and cloud computing will proliferate (e.g., latency for real-time gaming is less than 5 milliseconds).

In view of the high throughput and stringent real-time latency requirements of these applications, users expect higher throughput, higher reliability, less latency and jitter, and higher power efficiency when supporting their applications over a WLAN. The 802.11be system is intended to ensure the competitiveness of WLAN by further increasing the overall throughput and reducing latency, while ensuring backward compatibility and coexistence with legacy technology standards. 802.11 compatible devices operating in the 2.4GHz,5GHz and 6GHz bands.

Disclosure of Invention

The multilink access point device can flexibly set logical access points on a plurality of links on different frequency bands, for example, after initial startup, logical access points are only set on 2.4GHz and 5GHz frequency bands, later accessed devices become more, a new logical access point is added to operate on a 6GHz frequency band, and if the situation that interference on 2.4GHz is larger in the operation process, the logical access point operating on the 6GHz frequency band is added. However, the prior art cannot support the dynamic increase of the multilink access point device, if the starting process of the traditional single-link device is adopted, the multilink terminal searches for only one new access point, and because the terminal can be connected to only one access point, the multilink terminal cannot newly add an available link for the multilink terminal, so that the capacity of the multilink terminal is limited. In view of the above, the present invention provides a connection establishing method, apparatus, device and storage medium.

In a first aspect, the present invention provides a connection establishing method, including:

receiving a first connection request message sent by a first device, wherein the first connection request message comprises at least one of an identifier of the first device and an indication of whether a link is added for the connected device;

judging whether connection with first equipment is established or not according to the first connection request message;

sending a first connection response message to the first device, wherein the first connection response message comprises an indication of whether connection establishment is agreed and a connection identifier;

if the connection is established with the first device, setting the value of the connection identifier in the first connection response message as the value of the connection identifier allocated to the first device; and if the connection with the first equipment is not established, allocating a new connection identifier for the first equipment, and setting the value of the connection identifier in the first connection response message as the value of the new connection identifier.

In a possible implementation manner, the first connection request message includes an identifier of the first device and an identifier of the first device in the indication of whether to add a link to the connected device;

the determining whether a connection with a first device has been established according to the first connection request message includes:

if the information of the local device which has established the connection comprises the identification of the first device, the connection with the first device is judged to be established; otherwise, judging that the connection with the first equipment is not established.

In a possible implementation manner, when the first connection request message includes an identifier of the first device and an indication of whether the link is newly added to the connected device in the indications of whether the link is newly added to the connected device, the determining, according to the first connection request message, whether the connection with the first device is established includes:

if the first connection request message indicates that a link is newly added to the connected equipment, the connection with the first equipment is determined to be established; otherwise, judging that the connection with the first equipment is not established;

when the first connection request message includes an identifier of the first device and an indication of whether a link is newly added to the connected device, the determining, according to the first connection request message, whether a connection with the first device has been established includes:

if the first connection request message indicates that a link is newly added to the connected equipment, the connection with the first equipment is determined to be established; otherwise, checking whether the information of the local device with the established connection contains the identifier of the first device;

if the information of the local device which establishes the connection contains the identifier of the first device, the connection with the first device is judged to be established; otherwise, judging that the connection with the first equipment is not established.

In a possible implementation manner, the first connection request message includes an identifier of the first device and an indication of whether to add a link to the connected device, and when the first connection request message includes the connection identifier of the first device, the indication is to add a link to the connected device;

if the first connection request message contains the connection identifier of the first equipment, judging that the connection is established with the first equipment; otherwise, checking whether the information of the local equipment which has established connection contains the identification of the first equipment;

In a possible implementation manner, the identifier of the first device includes an address of the first device or a connection identifier of the first device.

In a possible implementation manner, the first connection request message further indicates a first link requesting to establish a connection and a link that is an NSTR link pair with the first link;

if the first connection request message indicates that the first link and the second link are an NSTR link pair, when data is sent to the first device on the first link and the second link, data sending is simultaneously ended on the two links, or when data is received on the first link, data is not sent on the second link, or when data is received on the second link, data is not sent on the first link.

In a possible implementation manner, before the receiving the first connection request message sent by the first device, the method further includes:

sending a broadcast message on a second link, wherein the broadcast message comprises an indication that a device to which an adjacent access point belongs is the same as the device sending the broadcast message and an identifier of a link to which the adjacent access point belongs, and the identifier of the link to which the adjacent access point belongs is set to indicate a first link, so that the first device can know that the first link is newly added;

and receiving a first connection request message sent by the first equipment on the first link, and sending a first connection response message to the first equipment on the first link.

receiving a second connection request message sent by a second device, wherein the second connection request message indicates a second link requesting to establish connection, and the second device and the first device are the same device or different devices;

allocating a connection identifier for the second device;

sending a second connection response message to the second device, wherein the second connection response message comprises an indication of whether to agree to establish connection and a connection identifier allocated to the second device;

and storing the information of the connection established with the second equipment, wherein the information of the connection established with the second equipment comprises the identification of the link establishing the connection with the second equipment and the connection identification allocated to the second equipment.

In one possible implementation, the second device is the same device as the first device; receiving a second connection request message sent by the second device on a second link, and sending a second connection response message to the second device on the second link; and receiving a first connection request message sent by the first equipment on the first link, and sending a first connection response message to the first equipment on the first link.

In a possible implementation manner, the second connection request message further indicates a link that is an NSTR link pair with the second link; the information that the connection with the second device is established also includes link information that each other is an NSTR link pair in the second device.

In a second aspect, the present invention provides a connection establishing method, including:

sending a first connection request message to a multilink access point device, wherein the first connection request message comprises at least one of an identifier of the first device and an indication of whether a link is newly added to a connected device, and is used for the multilink access point device to judge whether connection is established with the first device;

receiving a first connection response message sent by a multilink access point device, wherein the first connection response message comprises an indication of whether connection establishment is agreed and a connection identifier.

In a possible implementation manner, the identifier of the first device includes an address of the first device or a connection identifier of the first device; or, when the first connection request message includes the connection identifier of the first device, indicating that a link is newly added for the connected device.

if the first connection request message indicates that the first link and the second link are NSTR link pairs, when data is sent to the multi-link access point device on the first link and the second link, data sending is started on the two links at the same time, or when data is sent on the first link, data is not received on the second link, or when data is sent on the second link, data is not received on the first link.

In a possible implementation manner, before the sending the first connection request message to the multi-link access point device, the method further includes:

reading a broadcast message sent by multilink access point equipment on a second link, wherein the broadcast message comprises an indication that equipment to which an adjacent access point belongs is the same as the equipment sending the broadcast message and an identifier of a link to which the adjacent access point belongs, and the identifier of the link to which the adjacent access point belongs is set to indicate a first link; acquiring that the multilink access point equipment is newly added with a first link according to the broadcast message;

and sending a first connection request message to the multi-link access point device on the first link, and receiving a first connection response message sent by the multi-link access point device on the first link.

sending a second connection request message to the multilink access point device on a second link, wherein the second connection request message indicates the second link requesting to establish connection;

receiving a second connection response message sent by the multilink access point equipment on a second link, wherein the second connection response message comprises an indication whether connection establishment is agreed and a connection identifier;

storing information of connection established with the multilink access point equipment, wherein the information of connection established with the multilink access point equipment comprises an identifier of a link establishing connection with the multilink access point equipment and a connection identifier in the second connection response message;

the method comprises the steps of sending a first connection request message to the multi-link access point device on a first link, and receiving a first connection response message sent by the multi-link access point device on the first link.

In a possible implementation manner, the second connection request message further indicates a link that is an NSTR link pair with the second link.

In a third aspect, the present invention provides a connection establishing apparatus, including a connection establishing module, where the connection establishing module is configured to execute the following steps:

receiving a first connection request message sent by a first device, wherein the first connection request message comprises at least one of an identifier of the first device and an indication of whether a link is newly added for a connected device;

sending a first connection response message to the first device, wherein the first connection response message comprises an indication of whether connection establishment is allowed or not and a connection identifier, and if connection is established with the first device, setting the value of the connection identifier in the first connection response message as the value of the connection identifier allocated to the first device; and if the connection with the first equipment is not established, allocating a new connection identifier for the first equipment, and setting the value of the connection identifier in the first connection response message as the value of the new connection identifier.

In a fourth aspect, the present invention provides a connection establishing apparatus, including a connection establishing module, where the connection establishing module is configured to perform the following steps:

sending a first connection request message to a multilink access point device, wherein the first connection request message comprises at least one of an identifier of the first device and an indication of whether a link is newly added to a connected device, and is used for judging whether the multilink access point device establishes connection with the first device;

In a fifth aspect, the invention provides an electronic device comprising a memory, a processor and a computer program stored on the memory, the processor executing the computer program to implement the method of the first or second aspect.

In a sixth aspect, the present invention provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method of the first or second aspect.

In a seventh aspect, the present invention provides a computer program product comprising computer readable code, or a non-transitory computer readable storage medium carrying computer readable code, which when run in an electronic device, a processor in the electronic device performs the method of the first or second aspect.

It should be noted that the apparatus according to the third aspect is configured to execute the method provided by the first aspect, the apparatus according to the fourth aspect is configured to execute the method provided by the second aspect, and the electronic device according to the fifth aspect, the storage medium according to the sixth aspect, and the computer program product according to the seventh aspect are configured to execute the method provided by the first aspect or the second aspect, so that the same beneficial effects as the method provided by the first aspect or the second aspect can be achieved, and the description of the present invention is omitted.

The invention makes the connection response device judge whether the connection with the connection request device is established according to the connection request message by including corresponding parameters in the connection request message sent to the connection response device by the connection request device, if the connection with the connection request device is judged to be established, the value of the connection identifier in the connection response message sent to the connection request device is set to the value of the connection identifier allocated to the connection request device, thereby ensuring the consistency of the allocated connection identifier.

Drawings

Fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present invention;

fig. 2 is a flowchart of a connection establishment method according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.

Detailed Description

In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention. While the present disclosure has been described in terms of one or more exemplary embodiments, it is to be understood that each aspect of the disclosure can be implemented as a separate entity, or entity. The embodiments and features of the embodiments described below can be combined with each other without conflict.

In the present embodiment, "at least one" means one or more, "a plurality" means two or more. In order to facilitate clear description of technical solutions of the embodiments of the present invention, in the embodiments of the present invention, words such as "first" and "second" are used to distinguish the same items or similar items with substantially the same functions and actions, and it can be understood by those skilled in the art that the words such as "first" and "second" do not limit the quantity and execution order, are used merely for illustrating and distinguishing the objects of description, and do not represent the order division, nor represent the specific limitation on the quantity of devices or messages in the embodiments of the present invention, and cannot constitute any limitation on the embodiments of the present invention. The term "comprising" is used to indicate the presence of the features hereinafter claimed, but does not exclude the addition of further features.

First, briefly explaining the multilink technology related to the present invention, in a multilink scenario, generally, one physical device may include multiple logical entities, where the physical device may refer to a device such as a mobile phone, a television, a projector, and the like, and the logical entity may refer to a logical unit in the physical device, and belongs to a virtual function module. Each logical entity can independently manage data transmission and reception, and each logical entity independently operates on one link, and such a physical device is called an ALL-link device (MLD).

Fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present invention. As shown in fig. 1, the communication system includes a multi-link terminal STA MLD1 and a multi-link access point device AP MLD1, where the multi-link terminal STA MLD1 includes three logical terminals STA1, STA2, and STA3, the multi-link access point device AP MLD1 includes three logical access points AP1, AP2, and AP3, after power-on operation, the AP1 is set to operate in a 2.4GHz band, a link identifier is set to "1", that is, to operate on the link1, the AP2 is set to operate in a 5GHz band, and a link identifier is set to "2", that is, to operate on the link2, and the AP3 is not operated.

It should be understood that fig. 1 is only an architecture diagram of a communication system, and the number, types, and the like of devices in the communication system are not limited in the embodiment of the present invention, for example, more terminals or access points may be included, a multilink terminal and a multilink access point device may include two or more than four logical entities, and the number of logical entities included in the multilink terminal and the multilink access point device may be different. Further, those skilled in the art will understand that the term "Access Point (AP)" according to the present application may also be used to describe an access port or any other access point capable of receiving and transmitting wireless signals within a network architecture in accordance with the principles and functions described herein, and thus, the use of an access point is merely exemplary.

Continuing to refer to fig. 1, the multi-link terminal STA MLD1 establishes a connection with the multi-link access point device AP MLD1, where STA1 is connected with AP1, and the link identifier between them is "1"; STA2 is connected to AP2, with the link between them identified as "2". The method for establishing the connection between the multi-link terminal STA MLD1 and the multi-link access point device AP MLD1 may refer to the related art. The following exemplary method for establishing a connection between a multi-link terminal STA MLD1 and a multi-link access point device AP MLD1 includes:

101. the STA MLD1 sends a connection request message (e.g., an association request message) to the AP1 of the AP MLD1 through the STA1, where the message includes a Multi link element information element, and the Multi link element information element may include the following parameters:

MLD MAC address: the address of the multilink device, which is set as the address of the STA MLD 1in this embodiment;

STA 1info: information of a logical terminal requesting to establish a connection, which is information of STA 1in this embodiment;

STA 2info: the information of the logical terminal requesting to establish the connection is, in this embodiment, the information of STA 2.

Wherein, STA 1info includes the following parameters:

link ID: the identifier of the link, which is set to "1" in this embodiment, indicates that the request is to establish connection on the link 1;

NSTR pair indication: the identifier of the link that is the NSTR link pair with the link ID is set to "0" in this embodiment, which means that there is no NSTR link pair.

STA 2info contains the following parameters:

link ID: the identifier of the link, which is set to "2" in this embodiment, indicates that the request is to establish connection on the link 2;

If the two links are NSTR link pairs, when data is transmitted on one of the two links, the other link cannot receive the data; alternatively, while receiving data on one of the two links, data cannot be transmitted on the other link.

102. After receiving the connection request message through the AP1, if connection establishment with the STA MLD1 is agreed on the link1 and the link2, the AP MLD1 sends a connection response message (such as an association response message) to the STA1 on the link1 through the AP1, or sends a connection response message to the STA2 on the link2 through the AP2, where the connection establishment is indicated in the message, and the connection response message also includes a connection identifier AID allocated by the AP MLD1 to the STA MLD 1; and if the connection request of the STA MLD1 is not approved, sending a connection response message to the STA1 through the AP1, wherein the message indicates that the connection establishment is not approved. The embodiment of the invention assumes that the AP MLD1 agrees to establish a connection.

The AP MLD1 stores information of connection established with the STA MLD1, wherein the information comprises an identifier of a link for establishing connection with the STA MLD1, a connection identifier for indicating which links are used for establishing connection with the STA MLD1, a connection identifier allocated for the STA MLD1 and the like.

103. After the STA MLD1 receives the connection response message, if the connection establishment is agreed to be indicated in the message, the connection establishment is indicated to be established between the multi-link terminal STA MLD1 and the multi-link access point device AP MLD1, the STA MLD1 stores information of the connection established with the AP MLD1, and the information comprises the identification of the link establishing connection with the AP MLD1, the connection establishment indication used for indicating which links are connected with the AP MLD1, the connection identification in the received connection response message and the like. And the STA MLD1 performs data transmission according to the received information of the logical access point.

After the AP MLD1 operates for a period of time, when it detects that the number of terminals connected to the device is large or the traffic data volume of the terminal is large, it determines to enable the AP3 and operate the AP3 on the 6GHz band, where the operation link is identified as "3", that is, operate on the link3, because the link2 operating on the 5GHz band is closer to the link3 operating on the 6GHz band, when the edges of channels used on the two bands are closer, interference may be generated, and therefore when data cannot be transmitted on one link, the other link receives data, that is, the link2 and the link3 are each an NSTR link pair.

AP MLD1 may send a broadcast message through AP3 after enabling AP 3. Optionally, the AP MLD1 may further include a neighboring access point information element in a broadcast message (e.g., beacon message or probe response message) of the AP1 and the AP2, respectively, where the information element may include the following parameters:

MLD ID: the identifier of the multilink device, which is set to "0" in this embodiment, indicates that the device to which the neighboring access point belongs and the device to which the access point that sends the broadcast message belongs are the same device;

link ID: the identifier of the link where the adjacent access point is located is set to "3" in this embodiment;

TBTT offset: the time difference between the neighboring access point and the current access point transmitting the broadcast message.

The STA MLD1 receives the broadcast message sent by the AP1 through the STA1, receives the broadcast message sent by the AP2 through the STA2, or receives the broadcast message sent by the AP3 through the STA3, learns that a link3 is newly added to the AP MLD1 by reading the broadcast message, and determines whether to request to establish a new link connection according to its own policy, for example, if its own service requires a higher transmission rate, or a lower transmission delay, or whether there is an idle unused logical terminal. If STA MLD1 decides not to establish a connection with AP MLD1 on its newly enabled link, STA MLD1 does not request to establish a connection on link 3; if STA MLD1 decides to establish a connection with AP MLD1 on its newly enabled link, STA MLD1 requests to establish a connection on link 3.

In the embodiment of the present invention, assuming that the STA MLD1 determines to establish a connection with the AP3 on a new link through the logical terminal STA3 which has not been connected with the AP MLD1 before, the method for the STA MLD1 to request to establish a connection on the link3 includes the following contents, as shown in fig. 2.

201. The STA MLD1 sends a connection request message (such as an association request message or a association request message) to a logical access point AP3 belonging to the AP MLD1 through the logical terminal STA3, where the connection request message includes a Multi link element information element, which may include the following parameters:

MLD MAC address: the identifier of the multilink device, such as the address or connection identifier of the multilink device, is set as the address of the STA MLD 1in this embodiment;

STA info: the information of the logical terminal requesting to establish the connection is, in this embodiment, the information of STA 3.

The STA info may include the following parameters:

link ID: the identifier of the link, which is set to "3" in this embodiment, indicates that the connection is requested to be established on the link 3;

NSTR pair indication: the identifier of the link that is the NSTR link pair with the link ID is set to "2" in this embodiment, which means that the link2 is the NSTR link pair with the link.

202. And the AP MLD1 judges whether connection is established with the STA MLD1 according to the received connection request message.

Specifically, after receiving the connection request message, the AP MLD1 checks whether the information of the terminal that has established a connection locally includes a value of the parameter MLD MAC address in the connection request message, and if so, determines that a connection has been established with the STA MLD 1; if not, the connection with the STA MLD1 is judged not to be established.

203. The AP MLD1 sends a connection response message to a logic terminal STA3 belonging to the STA MLD1 through a logic access point AP3, wherein the message comprises an indication whether connection establishment is agreed and a connection identifier. The AP MLD1 sets a connection response message according to the determination result in step 202.

If it is determined in step 202 that the connection with the STA MLD1 is established and the connection with the STA MLD1 is agreed to be established on the link3, the value of the parameter status code is set to SUCCESS, which indicates that the connection establishment is agreed, the STA3 is allocated with the connection identifier AID3, the value of the AID3 is set to the value of the connection identifier AID allocated by the AP MLD1 to the STA MLD 1in step 102, and a connection response message (e.g., an association response message or a reassociation response message) is sent to the STA MLD1, where the message includes the parameter status code and the AID3.

If it is determined in step 202 that the connection with the STA MLD1 is not established and the connection with the STA MLD1 is agreed to be established on the link3, the parameter status code value is set to SUCCESS, which indicates that the connection establishment is agreed, the STA3 is assigned with the connection identifier AID3, the value of AID3 is set to a newly assigned value, which is set to a value different from the connection identifier assigned by the AP MLD1 to the terminal that has established the connection, and a connection response message (e.g., an association response message or a reassociation response message) is sent to the STA MLD1, where the message includes the parameters status code and AID3.

If it is determined in step 202 that the connection with the STA MLD1 is established and the difference is that the connection with the STA MLD1 is established on the link3, the parameter status code value is set to be reuse _ link, which indicates that the difference is that the connection is established on the link, and a connection response message is sent to the STA MLD1, where the message includes the parameter status code.

If it is determined in step 202 that the connection with the STA MLD1 is established and the difference is that the connection with the STA MLD1 is established on the link3, the parameter status code value is set to be reuse _ BSS, which indicates that the difference is that the connection is established on the access point, and a connection response message is sent to the STA MLD1, where the message includes the parameter status code.

After the STA MLD1 receives the connection response message, if the status code value in the message is SUCCESS, the STA MLD1 and the AP MLD1 have established connection on the link3, and then modify the connection information as follows: STA MLD1 and AP MLD1 are connected on a link1, a link2 and a link 3; if the status code value in the message is Refuse _ link, keeping the connection information of the STA MLD1 and the AP MLD1 as follows: STA MLD1 and AP MLD1 are connected on link1 and link 2; if the status code value in the message is Refuse _ BSS, the state between the STA MLD1 and the AP MLD1 is in an unconnected state.

In some embodiments, if the connection request message in step 201 includes the parameter NSTR pair, and the value of the parameter indicates that link3 and link2 are an NSTR link pair, when the STA MLD1 transmits data to the AP MLD1 on link2 and link3, data transmission is started simultaneously on both links, or when data is transmitted on link2, no data is received on link3, or when data is transmitted on link3, no data is received on link 2; when transmitting data to the STA MLD1 on the link2 and the link3, the AP MLD1 ends data transmission on the two links simultaneously, or when receiving data on the link2, does not transmit data on the link3, or when receiving data on the link3, does not transmit data on the link 2.

In some embodiments, the parameter STA info included in the connection request message in step 201 may include the following parameters:

link ID: the identifier of the link, which is set to be '3' in this embodiment, indicates that the connection is requested to be established on the link 3;

NSTR pair indication: an identifier of a link that is an NSTR link pair with the link ID, which is set to "2" in this embodiment, and indicates that link2 is an NSTR link pair;

AID: the connection identifier of the terminal, which includes the parameter in the connection request message, indicates a request for adding a link to the connected terminal, and this embodiment is set to the value of the connection identifier allocated by the AP MLD1 to the STA MLD 1in step 102.

After the AP MLD1 receives the connection request message, if the connection request message contains the AID, the request is judged to be a request for adding a new connection link to the connected terminal, namely, the connection with the STA MLD1 is judged to be established, if the request is agreed, a parameter status code value is set to SUCCESS, the AP MLD1 updates the connection information with the STA MLD1, if the request is not agreed, the parameter status code value is set to Refuse _ link, and a connection response message is sent to the STA MLD1, wherein the message contains the parameter status code. If the parameter AID is not contained in the connection request message, the above steps 202-203 are performed.

In some other embodiments, the connection request message in step 201 may not include the parameter MLD MAC address, and the included parameter STA info may include the following parameters:

new link indication: if the link is newly added to the connected terminal, if the link is set to "0", it indicates that the link is not newly added to the connected terminal, and the link is set to "1", it indicates that the link is newly added to the connected terminal, and the link is set to "1" in this embodiment.

After the AP MLD1 receives the connection request message, if the value of the parameter New link indication is '1', the connection with the STA MLD1 is judged to be established, if the request is agreed, the value of the parameter status code is SUCCESS, the AP MLD1 updates the connection information with the STA MLD1, if the request is not agreed, the value of the parameter status code is Refuse _ link, a connection response message is sent to the MLSTA D1, and the message contains the parameter status code. If the value of the New link indication is '0', judging that connection with the STA MLD1 is not established, if the request is agreed, setting the value of the parameter status code to SUCCESS, updating the connection information with the STA MLD1 by the AP MLD1, if the request is not agreed, setting the value of the parameter status code to Refuse _ BSS, and sending a connection response message to the STA MLD1, wherein the message contains the parameter status code.

In some other embodiments, the connection request message in step 201 includes a parameter MLD MAC address, and the parameter STA info includes the following parameters:

After the AP MLD1 receives the connection request message, if the value of the New link indication is '1', the connection with the STA MLD1 is judged to be established, if the request is agreed, the value of the parameter status code is set to SUCCESS, the AP MLD1 updates the connection information with the STA MLD1, if the request is not agreed, the value of the parameter status code is set to Refuse _ link, and a connection response message is sent to the STA MLD1, wherein the message comprises the parameter status code. If the value of the parameter New link indication is "0", the above-described steps 202-203 are performed.

In some embodiments, if in step 201, the source address in the connection request message sent by the STA MLD1 to the AP MLD1 is set as the address of the STA MLD1, the connection request message may not include the parameter MLDMAC address, and the AP MLD1 may directly determine whether the connection is established with the STA MLD1 according to the source address in the connection request message.

It should be noted that, in the communication system shown in fig. 1, if other terminals are further included, such as the multi-link terminal STA MLD2 and the single-link terminal STA6, and the multi-link terminal STA MLD2 includes two logical terminals STA4 and STA5, after the AP MLD1 enables the AP3, the multi-link terminal STA MLD2 and/or the single-link terminal STA6 may also request to establish a connection with the AP MLD1 on the link3, and the establishment request process may refer to the above steps 101 to 103 or steps 201 to 203, which will not be described in detail herein.

The embodiment of the present invention further provides a connection establishing apparatus, including a connection establishing module, where the connection establishing module is configured to execute the following steps:

sending a first connection response message to the first device, wherein the first connection response message comprises an indication of whether connection establishment is agreed and a connection identifier; if the connection is established with the first device, setting the value of the connection identifier in the first connection response message as the value of the connection identifier allocated to the first device; and if the connection with the first equipment is not established, allocating a new connection identifier for the first equipment, and setting the value of the connection identifier in the first connection response message as the value of the new connection identifier.

Optionally, the first connection request message includes an identifier of the first device and an identifier of the first device in the indication of whether the link is newly added to the connected device;

the judging whether the connection with the first device is established according to the first connection request message comprises:

Optionally, when the first connection request message includes an identifier of the first device and an indication of whether the link is newly added to the connected device, in the indication of whether the link is newly added to the connected device, the determining, according to the first connection request message, whether the connection is established with the first device includes:

when the first connection request message includes an identifier of the first device and an indication of whether a link is newly added to a connected device, the determining, according to the first connection request message, whether a connection with the first device has been established includes:

Optionally, the first connection request message includes an identifier of the first device and an indication of whether to add a link to the connected device, and when the first connection request message includes the identifier of the first device, the indication indicates that the link is added to the connected device;

if the first connection request message contains the connection identifier of the first equipment, judging that the connection with the first equipment is established; otherwise, checking whether the information of the local equipment which has established connection contains the identification of the first equipment;

Optionally, the first connection request message further indicates a first link requesting to establish a connection and a link that is an NSTR link pair with the first link; the connection establishment module is further configured to perform the steps of:

Optionally, the connection establishing module is further configured to perform the following steps:

the connection establishing module receives a first connection request message sent by the first device on the first link, and sends a first connection response message to the first device on the first link.

allocating a connection identifier for the second device;

reading a broadcast message sent by multilink access point equipment on a second link, wherein the broadcast message comprises an indication that equipment to which an adjacent access point belongs is the same as the equipment sending the broadcast message and an identifier of a link to which the adjacent access point belongs, and the identifier of the link to which the adjacent access point belongs is set to indicate a first link; acquiring that the first link is newly added to the multilink access point equipment according to the broadcast message;

the connection establishing module sends a first connection request message to the multi-link access point device on the first link, and receives a first connection response message sent by the multi-link access point device on the first link.

sending a second connection request message to the multi-link access point device on a second link, wherein the second connection request message indicates the second link requesting to establish connection;

receiving a second connection response message sent by the multilink access point equipment on a second link, wherein the second connection response message comprises an indication of whether connection establishment is agreed and a connection identifier;

storing information of connection established with the multilink access point equipment, wherein the information of connection established with the multilink access point equipment comprises an identifier of a link for establishing connection with the multilink access point equipment and a connection identifier in the second connection response message;

It should be understood that the means herein are embodied in the form of functional modules. The term module herein may refer to an Application Specific Integrated Circuit (ASIC), an electronic circuit, a processor (e.g., a shared, dedicated, or group processor) and memory that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that support the described functionality. The device has the functions of realizing the corresponding steps in the method; the above functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the functions described above. In an embodiment of the present invention, an apparatus may also be a chip or a system of chips, for example: system on chip (SoC). The invention is not limited thereto.

The embodiment of the invention also provides electronic equipment, and fig. 3 is a schematic structural diagram of the electronic equipment provided by the embodiment of the invention. As shown in fig. 3, the device 300 comprises a processor 301, a memory 302 and a communication interface 303, wherein the processor 301, the memory 302 and the communication interface 303 communicate with each other via a bus 304, and the memory 302 stores instructions executable by the processor 301, and the instructions are loaded and executed by the processor 301 to control the communication interface 303 to send and/or receive signals.

It should be understood that the device 300 may be embodied as the AP MLD1 or the STA MLD 1in the above embodiments, or the functions of the AP MLD1 or the STA MLD 1in the above embodiments may be integrated in the device 300, and the device 300 may be configured to perform the respective steps and/or flows corresponding to the AP MLD1 or the STA MLD 1in the above embodiments. The memory 302 may optionally include both read-only memory and random access memory, and provides instructions and data to the processor 301. A portion of the memory 302 may also include non-volatile random access memory. For example, the memory 302 may also store device type information. The processor 301 may be configured to execute the instructions stored in the memory 301, and when the processor 301 executes the instructions, the processor 301 may perform the corresponding steps and/or processes in the above method embodiments.

It should be understood that, in the embodiment of the present invention, the processor may be a Central Processing Unit (CPU), and the processor may also be other general processors, digital Signal Processors (DSP), application Specific Integrated Circuits (ASIC), field Programmable Gate Arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or by instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor executes instructions in the memory and combines hardware thereof to perform the steps of the above-described method. To avoid repetition, it is not described in detail here.

The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. The procedures or functions according to the embodiments of the present invention are wholly or partially generated when the computer instructions or the computer program are loaded or executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more collections of available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. The semiconductor medium may be a solid state disk.

It should be understood that, in various embodiments of the present invention, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention. The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules, that is, may be located in one place, or may also be distributed on a plurality of network modules, and some or all of the modules may be selected according to actual needs to achieve the purpose of the embodiments of the present invention.

In the embodiments provided by the present invention, it should be understood that the disclosed apparatus, device and method can be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is only one logical division, and there may be other divisions in actual implementation, for example, one module or component may be divided into a plurality of modules or components, or a plurality of modules or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.

Those of ordinary skill in the art will appreciate that the various illustrative modules and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and shall cover the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A method for establishing a connection, comprising:

2. The method according to claim 1, wherein the first connection request message includes an identifier of the first device and an identifier of the first device in the indication of whether to add a link to the connected device;

3. The method as claimed in claim 1, wherein when the first connection request message includes an identifier of the first device and an indication of whether the link is newly added to the connected device, the determining whether the connection is established with the first device according to the first connection request message includes:

4. The method according to claim 1, wherein the first connection request message includes an identifier of the first device and an indication of whether to add a link to the connected device, and when the first connection request message includes the connection identifier of the first device, the indication is that the link is added to the connected device;

if the first connection request message contains the connection identifier of the first equipment, judging that the connection is established with the first equipment; otherwise, checking whether the information of the local device with the established connection contains the identifier of the first device;

5. The method according to claim 1, wherein the identifier of the first device comprises an address of the first device or a connection identifier of the first device.

6. The method according to claim 1, wherein the first connection request message further indicates a first link requesting connection establishment and a link that is an NSTR link pair with the first link;

7. The method according to claim 1, further comprising, before the receiving the first connection request message sent by the first device:

8. The method according to claim 1, further comprising, before the receiving the first connection request message sent by the first device:

allocating a connection identifier for the second device;

sending a second connection response message to the second device, wherein the second connection response message comprises an indication of whether connection establishment is agreed and a connection identifier distributed to the second device;

and storing the information of the established connection with the second equipment, wherein the information of the established connection with the second equipment comprises the identification of the link establishing the connection with the second equipment and the connection identification distributed to the second equipment.

9. A connection set-up method according to claim 8, characterised in that said second device is the same device as said first device; receiving a second connection request message sent by the second equipment on a second link, and sending a second connection response message to the second equipment on the second link; and receiving a first connection request message sent by the first equipment on the first link, and sending a first connection response message to the first equipment on the first link.

10. The method according to claim 8, wherein the second connection request message further indicates a link that is NSTR link pair with the second link; the information that the connection with the second device has been established also includes link information that are mutual NSTR link pairs in the second device.

11. A method for establishing a connection, comprising:

12. The method according to claim 11, wherein the identifier of the first device comprises an address of the first device or a connection identifier of the first device; or, when the first connection request message includes the connection identifier of the first device, indicating that a link is newly added to the connected device.

13. A connection establishing method according to claim 11, wherein the first connection request message further indicates a first link requesting to establish a connection and a link which is an NSTR link pair with the first link;

14. The method of claim 11, wherein before sending the first connection request message to the multi-link access point device, the method further comprises:

15. The method of claim 11, further comprising, before sending the first connection request message to the multi-link access point device:

16. A method according to claim 15, wherein the second connection request message further indicates a link that is an NSTR link pair with the second link.

17. A connection establishing apparatus, comprising a connection establishing module configured to perform the following steps:

sending a first connection response message to the first device, wherein the first connection response message comprises an indication of whether connection establishment is agreed and a connection identifier, and if connection is established with the first device, setting the value of the connection identifier in the first connection response message as the value of the connection identifier allocated to the first device; and if the connection with the first equipment is not established, allocating a new connection identifier for the first equipment, and setting the value of the connection identifier in the first connection response message as the value of the new connection identifier.

18. A connection establishing apparatus, comprising a connection establishing module configured to perform the following steps:

19. An electronic device comprising a memory, a processor and a computer program stored on the memory, characterized in that the processor executes the computer program to implement the method of any of claims 1-16.

20. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method of any one of claims 1-16.