WO2021114797A1

WO2021114797A1 - Multi-link synchronous transmission and reception method, device, storage medium and terminal

Info

Publication number: WO2021114797A1
Application number: PCT/CN2020/116114
Authority: WO
Inventors: 赵育仁; 徐彦超; 余庆华
Original assignee: 展讯通信（上海）有限公司
Priority date: 2019-12-11
Filing date: 2020-09-18
Publication date: 2021-06-17
Also published as: CN110972256A

Abstract

Provided are a multi-link synchronous transmission and reception method, a device, a storage medium and a terminal, the multi-link synchronous transmission method includes: determining at least one link synchronous group, the link synchronous group includes a primary link and the associated secondary link, the secondary link is synchronized with the primary link; determining the primary channel of the primary link and the primary channel of the secondary link, the primary channel of the primary link and the primary channel of the secondary link can perform clear channel assessment operation of the primary channel; performing multi-link synchronous transmission on the primary link at least according to the assessment result of the clear channel assessment operation, or performing multi-link synchronous transmission on the primary link and the associated secondary link. The technical solution of the present invention can perform multi-link synchronous transmission in a multi-link system to further reduce data transmission interference.

Description

Multi-link synchronous transmission and reception method and device, storage medium and terminal

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on December 11, 2019, the application number is 2019112677059, and the invention title is "Multilink Synchronous Transmission, Reception Method and Device, Storage Medium, and Terminal", and its entire contents Incorporated in this application by reference.

Technical field

The present invention relates to the field of wireless communication technology, in particular to a multi-link synchronous transmission and reception method and device, storage medium, and terminal.

Background technique

At present, in the traditional Institute of Electrical and Electronics Engineers 802.11 (Institute of Electrical and Electronics Engineers 802.11, IEEE802.11) protocol (for example, the Wireless Local Area Network (WLAN) protocol) regulations, only a single chain is defined In the development of 802.11be, the discussion of multi-link systems has begun. Normally, each data packet can be sent through any channel.

In a multi-link system, when the isolation of two links of the same terminal is poor, the transmission of one link will seriously interfere with the reception of the other link. At this time, asynchronous transmission cannot be performed. To solve this technical problem, synchronous transmission can be used to reduce interference.

However, how to perform synchronous transmission requires further research.

Summary of the invention

The technical problem solved by the present invention is how to perform multi-link synchronous transmission in a multi-link system to further reduce data transmission interference.

In order to solve the above technical problems, embodiments of the present invention provide a multi-link synchronous transmission method. The multi-link synchronous transmission method includes: determining at least one link synchronization group, and the link synchronization group includes a main link and its Associated secondary link, the secondary link is synchronized with the primary link; the primary channel of the primary link and the primary channel of the secondary link are determined, the primary channel of the primary link and the secondary The main channel of the link can perform the main channel idle channel assessment operation; at least according to the assessment result of the idle channel assessment operation, multi-link synchronous transmission is performed on the main link, or on the main link and its associated Multi-link synchronous transmission is performed on the auxiliary link.

Optionally, the multi-link synchronous transmission method is applied to an access point, and after determining the primary channel of the primary link and the primary channel of the secondary link, the method further includes: sending beacon information or handshake information, The beacon information or handshake information is used to indicate the link synchronization group, the primary channel of the primary link, and the primary channel of the secondary link.

Optionally, the multi-link synchronization transmission method is applied to a station, and before the determining at least one link synchronization group, the method further includes: receiving beacon information or handshake information, where the beacon information or handshake information is used to indicate all The link synchronization group, the main channel of the main link, and the main channel of the auxiliary link.

Optionally, the multi-link synchronization transmission method is applied to a station, and determining at least one link synchronization group includes: determining, according to the beacon information or handshake information, that the link that is the same as the main link of the access point is determined as Determining the primary link of the site and determining the same link as the secondary link of the access point as the secondary link of the site; determining the primary channel of the primary link and the secondary link The main channel of the channel includes: determining, according to the beacon information or handshake information, that the same channel as the main channel of the main link of the access point is the main channel of the main link of the station, and determining the main channel of the main link of the station; The same channel as the primary channel of the secondary link of the entry point is the primary channel of the secondary link of the site.

Optionally, the multi-link synchronization transmission is performed on the primary link according to the evaluation result of the free channel evaluation operation, or the multi-link synchronization is performed on the primary link and its associated secondary link The transmission includes: if the evaluation result of the primary channel of the primary link indicates that the channel contention is successful, judging whether the channel where each secondary link is located is an idle channel according to the evaluation result of the primary channel of the secondary link; The primary channel where the secondary link is located is an idle channel, and each data packet is transmitted on the primary link and the secondary link respectively.

Optionally, the multi-link synchronous transmission is performed on the primary link at least according to the evaluation result of the free channel assessment operation, or multi-link is performed on the primary link and its associated secondary link Synchronous transmission includes: if the evaluation result of the primary link indicates successful competition to the channel where the primary link is located, and the evaluation result of the secondary link indicates that the primary channel where at least one secondary link is located is an idle channel, then The primary link and the at least one secondary link send out data packets.

Optionally, the multi-link synchronous transmission is performed on the primary link at least according to the evaluation result of the free channel assessment operation, or multi-link is performed on the primary link and its associated secondary link Synchronous transmission includes: if the evaluation result of the primary link indicates that the channel where the primary link is located is successfully competed, and the evaluation result of the secondary link indicates that the channels where all secondary links are located are not idle channels, then The main link sends out data packets.

In order to solve the above technical problem, the embodiment of the present invention also discloses a multi-link synchronization receiving method. The multi-link synchronization receiving method includes: determining at least one link synchronization group, the link synchronization group including the main link And its associated auxiliary link, the auxiliary link is synchronized with the main link; the main channel of the main link and the main channel of the auxiliary link, the main channel of the main link and the main channel are determined The main channel of the auxiliary link can perform the idle channel assessment operation of the main channel; receive data packets transmitted simultaneously by multiple links on the main link, or receive multiple data packets on the main link and its associated auxiliary link. Data packets transmitted synchronously on the link.

The embodiment of the present invention also discloses a multi-link synchronous transmission device. The multi-link synchronous transmission device includes: a first link synchronization group determining module for determining at least one link synchronization group, the link synchronization The group includes a main link and its associated auxiliary link, and the auxiliary link is synchronized with the main link; a first main channel determining module is used for the main channel of the main link and the auxiliary link The main channel of the main link and the main channel of the auxiliary link can perform the main channel idle channel assessment operation; the data transmission module is used for at least according to the assessment result of the idle channel assessment operation in the Multi-link synchronous transmission is performed on the main link, or multi-link synchronous transmission is performed on the main link and its associated auxiliary link.

The embodiment of the present invention also discloses a multi-link synchronization receiving device. The multi-link synchronization receiving device includes: a second link synchronization group determining module for determining at least one link synchronization group, the link synchronization The group includes a main link and its associated auxiliary link, and the auxiliary link is synchronized with the main link; a second main channel determining module is used to determine the main channel of the main link and the auxiliary link The main channel of the main link, the main channel of the main link and the main channel of the auxiliary link can perform the main channel idle channel assessment operation; the data receiving module is used to receive multi-link synchronous transmission on the main link , Or receive a multi-link synchronous transmission data packet on the primary link and its associated secondary link.

The embodiment of the present invention also discloses a storage medium on which computer instructions are stored, and the computer instructions execute the steps of the multi-link synchronous transmission method or the steps of the multi-link synchronous reception method when the computer instruction runs.

The embodiment of the present invention also discloses a terminal, including a memory and a processor, the memory stores computer instructions that can run on the processor, and the processor executes the multi-chain when the computer instructions are executed. The steps of the method for synchronous transmission, or the steps of the method for multi-link synchronous reception.

Compared with the prior art, the technical solution of the embodiment of the present invention has the following beneficial effects:

In the technical solution of the present invention, at least one link synchronization group is determined, and the link synchronization group includes a primary link and its associated secondary link, and the secondary link is synchronized with the primary link; determining the The main channel of the main link and the main channel of the auxiliary link, the main channel of the main link and the main channel of the auxiliary link can perform the main channel idle channel assessment operation; according to the idle channel assessment operation The evaluation result is multi-link synchronous transmission on the main link, or multi-link synchronous transmission on the main link and its associated auxiliary link. Since the secondary link in the technical solution of the present invention also has a primary channel, the secondary link can have a fast clear channel assessment (CCA) capability, and thus have a fast CCA response, thereby making it possible to determine whether the secondary link is available or not. The judgment is more accurate, effectively avoiding interference between multiple links, and improving the reliability and effectiveness of the multi-link transmission system.

Further, the access point sends beacon information or handshake information, where the beacon information or handshake information is used to indicate the link synchronization group, the primary channel of the primary link, and the primary channel of the secondary link . In the technical solution of the present invention, the access point can indicate the link synchronization group and the related information of the main channel to the station in the beacon information or handshake information, so that the station can cooperate with the access point to set the corresponding main link and auxiliary link Its main channel guarantees the reliability of data transmission between the access point and the station, or between the station and the station.

Description of the drawings

FIG. 1 is a flowchart of a multi-link synchronous transmission method according to an embodiment of the present invention;

FIG. 2 is a flowchart of another multi-link synchronous transmission method according to an embodiment of the present invention;

3 and 4 are schematic diagrams of a specific application scenario of an embodiment of the present invention;

FIG. 5 is a flowchart of a multi-link synchronization receiving method according to an embodiment of the present invention;

6 is a schematic structural diagram of a multi-link synchronous transmission device according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a multi-link synchronous receiving device according to an embodiment of the present invention.

Detailed ways

As mentioned in the background art, how to perform synchronous transmission requires further research.

The inventor of the present application discovered through research that in the IEEE802.11ac protocol, the transmission with a channel bandwidth of 80+80MHz is a non-contiguous mode transmission. In this discontinuous mode, only one 80MHz channel is the primary channel. The other 80MHz channel is a secondary channel. The auxiliary channel transmission is synchronized with the main channel transmission, and the auxiliary channel can transmit data only when the main channel is available. This method can be regarded as the simplest synchronous multi-link system and can be compared with the old single-link system. Content. The embodiments of the present invention extend and improve based on this concept, and propose a more widely applicable synchronous multi-link system.

Since the secondary link in the technical solution of the present invention also has a primary channel, the secondary link can have a fast clear channel assessment (CCA) capability, and thus have a fast CCA response, thereby making it possible to determine whether the secondary link is available or not. The judgment is more accurate, effectively avoiding interference between multiple links, and improving the reliability and effectiveness of the multi-link transmission system.

In order to make the above objectives, features and advantages of the present invention more obvious and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Fig. 1 is a flowchart of a multi-link synchronous transmission method according to an embodiment of the present invention.

In this embodiment, the multi-link synchronous transmission method may be executed by a terminal, for example, executed by an access point (AP) or a station (STAation, STA) in a WLAN system.

Specifically, the multi-link synchronous transmission method may include the following steps:

Step S101: Determine at least one link synchronization group, where the link synchronization group includes a primary link and its associated secondary link, and the secondary link is synchronized with the primary link;

Step S102: Determine the primary channel of the primary link and the primary channel of the secondary link, and the primary channel of the primary link and the primary channel of the secondary link can perform primary channel idle channel assessment operations;

Step S103: Perform multi-link synchronous transmission on the primary link at least according to the evaluation result of the idle channel evaluation operation, or perform multi-link synchronous transmission on the primary link and its associated secondary link.

It should be pointed out that the sequence number of each step in this embodiment does not represent a limitation on the execution order of each step.

In the specific implementation of step S101, the AP may establish a link synchronization group or agree to a link synchronization group required by the STA. The link synchronization group may include a primary link and a secondary link associated with it. Alternatively, the link synchronization group may include one primary link and multiple secondary links associated with it. When transmitting data packets, each auxiliary link is synchronized with the main link, and the transmission opportunity is controlled by the main link. That is, only when the primary link can transmit data packets, the secondary link has the opportunity to transmit data packets. When the primary link cannot transmit data packets, even if the secondary link is in an idle state, data packets cannot be transmitted. It should be noted that the data packet may be a medium access control protocol data unit (MAC Protocol Data Unit, MPDU).

Among the multiple links for multi-link synchronous transmission, there is only one primary link, and the other links are all secondary links.

In specific implementation, the bandwidth of each link in a single link synchronization group may be completely different, or may be partially the same.

In the specific implementation of step S102, the AP or STA may determine the primary channel (Primary Channel) of the primary link and the primary channel of the secondary link. Among them, the primary channel of the primary link can be used for competition channel and primary channel CCA (Primary CCA) operations, and the primary channel of the secondary link can be used for primary channel CCA operations. The secondary channel (Secondary Channel) of other non-primary channels can only perform secondary channel CCA (Secondary CCA) operations. Compared with the primary channel CCA, Secondary CCA takes a longer time.

Specifically, the frequency bandwidth of the main channel may be 20 MHz, or 40, 60, or 80 MHz, which is not limited in the embodiment of the present invention.

Furthermore, in the specific implementation of step S103, data transmission can be performed based on the CCA evaluation result. For example, when the primary link successfully competes for the channel and the CCA evaluation result of the secondary link indicates that the channel is idle, the primary link and its associated Multi-link synchronous transmission is performed on the secondary link of the primary link; when the primary link successfully competes for the channel and the CCA evaluation result of the secondary link indicates that the channel is occupied, the multi-link synchronous transmission can be performed on the primary link.

In a non-limiting example, if a station is a multi-link synchronization mode station, and both the AP and the synchronization mode station have determined the primary link and the secondary link associated with it, then the AP sends to the synchronization mode station Before data packets, the primary link can compete for the channel, and after successfully competing for the channel, determine whether the secondary link is idle, and when the secondary link is idle, the primary link and Data packets are sent on the secondary link. Wherein, the multi-link synchronous mode station refers to a station that uses synchronous multi-link for data packet transmission.

Further, if none of the primary channels on which the secondary link is located is an idle channel, the AP will only use the primary link to transmit data packets. If some of the primary channels on which the secondary links are located are idle channels, the AP transmits data packets on the primary link and each idle secondary link respectively.

When multiple links are used for synchronous transmission, the AP or STA can transmit data packets on the primary link and secondary link respectively. The data packet transmitted by the secondary link may be different from the data packet transmitted by the main link, and the two independently transmit different data packets.

In another non-limiting embodiment, the multi-link synchronization mode station may send data packets to the AP based on the primary link and the secondary link. If the multi-link synchronization mode station successfully competes for the channel where the main link is located, and the main channel where at least one of the auxiliary links is located is an idle channel, the multi-link synchronization mode station may be in the main link And at least one of the secondary links sends a data packet to the AP. Correspondingly, the AP may receive the data packet on the primary link and at least one of the secondary links.

Or, if the multi-link synchronization mode station successfully competes for the main link, but the channels on which all the secondary links are located are not idle channels, the multi-link synchronization mode station will only be in the main link. The road sends a data packet to the AP. Correspondingly, the AP can receive the data packet on the main link.

In the embodiment of the present invention, the secondary link also has a primary channel, so the secondary link can have a fast clear channel assessment (CCA) capability, thereby having a fast CCA response, thereby making it possible to determine whether the secondary link is available It is more accurate, effectively avoids interference between multiple links, and improves the reliability and effectiveness of the multi-link transmission system.

In a non-limiting embodiment of the present invention, after step S102 shown in FIG. 1, the following step may be further included: sending beacon information or handshake information, where the beacon information or handshake information is used to indicate the link synchronization group , The main channel of the main link and the main channel of the auxiliary link.

In this embodiment, the AP may also send beacon information or handshake information to stations in the same Basic Service Set (BSS).

In a non-limiting embodiment of the present invention, please refer to FIG. 2. Before step S101 shown in FIG. 1, the following steps may be included:

Step S201: Receive beacon information or handshake information, where the beacon information or handshake information is used to indicate the link synchronization group, the primary channel of the primary link, and the primary channel of the secondary link.

Further, referring to FIG. 1 and FIG. 2, step S101 shown in FIG. 1 may include:

Step S202: According to the beacon information or handshake information, it is determined that the same link as the primary link of the access point is determined to be the primary link of the station, and the same link as the secondary link of the access point is determined. The path is determined as the auxiliary link of the site.

Step S203: According to the beacon information or handshake information, determine that the same channel as the main channel of the main link of the access point is the main channel of the main link of the station, and determine the main channel of the main link with the access point. The same channel as the primary channel of the secondary link is the primary channel of the secondary link of the site.

In this embodiment, the station may receive the beacon information or handshake information after or before joining the BSS. If the station is a station in synchronous link mode, after knowing the relevant information of the AP’s primary link, secondary link, and primary channel, the station will set the site’s own primary link to be the same as the AP’s And you can set the same one or more secondary links with the AP to form a link synchronization group for the station; you can also set the same primary channel for each link as the AP, that is The main channel of the station on each link is the same as the main channel of the AP on each link.

If the station is a single link station, the station uses the same link as the AP main link as the transmission link, and uses the main channel of the same main link as the AP as the transmission link Main channel. When transmitting data packets, single-link stations can compete for the channel on the main channel of the transmission link, and transmit data packets on the transmission link after the competition succeeds.

In a non-limiting embodiment of the present invention, the data sending end successfully competes for the channel where the primary link is located, and the primary channel where at least one of the secondary links is located is an idle channel. Wherein, the data sending end may be an AP or a station. If the data sending end is an AP, the data receiving end can be a station; otherwise, the data receiving end can be an AP or a station. The data receiving end may receive data packets sent by the data sending end on the primary link and at least one of the secondary links.

In a non-limiting embodiment of the present invention, the data receiving end may receive the data packet sent by the data sending end on the main link.

The difference from the foregoing embodiment is that the data sending end of the embodiment of the present invention only sends data packets on the main link, so the data receiving end only receives data packets on the main link.

3 and 4, in a specific application scenario of the present invention, the link ch1 and the link ch2 belong to a synchronous link group.

AP is a multi-link non-synchronous multi-link device. When connecting to the synchronous mode station STA1, the link ch1 is set as the main link and the link ch2 is the auxiliary link. When the AP sends a data packet to the station STA1, the data packet flows into the LMAC (Lower MAC) layer (LMAC1 and LMAC2 in the figure) and the physical layer (PHY1 and PHY2 in the figure) through the MAC layer of the AP, and then through the link ch1 (Alternatively, link ch1 and auxiliary link ch2) are sent to the physical layer (PHY1, PHY2 in the figure) and LMAC layer (LMAC1 and LMAC2 in the figure) of each site of the receiver, and uploaded to the MAC layer of each site.

Among them, each link has a main channel, and the frequency bandwidth of the main channel can be 20MHz, 40MHz, 60MHz or 80MHz.

In the scenario of the present invention, the station STA1 is a multi-link synchronization mode station, and the station STA2 is a single-link terminal.

Among them, the physical layer PHY1 of the station STA1 allows the physical layer PHY1 of the AP to transmit data packets on the link ch1, and the physical layer PHY2 of the station STA1 allows the physical layer PHY2 of the AP to transmit data packets on the link ch2. At this time, the station STA1 The main link may be determined as the link ch1, and the link ch2 may be determined as the auxiliary link.

In a specific implementation, when the AP transmits a data packet with the station STA2, the station STA2 needs to perform channel competition based on the channel where the link ch2 is located, and can exchange data packets after successfully competing for the channel.

In specific implementation, when the AP transmits data packets with the station STA1, the station STA1 needs to compete for the channel based on the channel where the link ch1 is located. After successfully competing for the channel, it can also be determined based on whether the channel where the secondary link (ie link ch2) is located is free. On link ch1, data packets are exchanged on link ch1 and link ch2.

In the scenario of the present invention, since the secondary link ch2 has a main channel, the secondary link ch2 has a fast CCA capability. Referring to Fig. 4 together, in the Point Coordination Function Interframe Space (PIFS), the station STA2 starts to send data (shown by STA2 Tx Data in Fig. 4). In the prior art solution, the station STA1 cannot detect that the secondary link ch2 is occupied by the station STA2, which causes the data packet sent by the station STA1 on the secondary link ch2 to conflict with the data packet sent by the station STA2, and the AP cannot receive the station. Data packets sent by STA1 on the secondary link ch2 and station STA2.

In the solution of the present invention, since the secondary link ch2 has fast CCA capability, the station STA1 can detect that the channel is busy on the secondary link ch2, and the station STA1 only transmits data packets on the primary link ch1 (STA1 in Figure 4 Tx Data), no data packets are transmitted on the secondary link ch2, so as to avoid data conflicts on the secondary link ch2 and ensure the reliability of data transmission.

Please refer to FIG. 5, the multi-link synchronization receiving method shown in FIG. 5 may be executed by an AP or a station. The multi-link synchronous receiving method may include the following steps:

Step S501: Determine at least one link synchronization group, where the link synchronization group includes a primary link and its associated secondary link, and the secondary link is synchronized with the primary link;

Step S502: Determine the primary channel of the primary link and the primary channel of the secondary link, and the primary channel of the primary link and the primary channel of the secondary link can perform primary channel idle channel assessment operations;

Step S503: Receive a data packet synchronously transmitted by a multi-link on the main link, or receive a data packet synchronously transmitted by a multi-link on the main link and its associated secondary link.

Fig. 6 is a schematic structural diagram of a multi-link synchronous transmission device according to an embodiment of the present invention. The multi-link synchronous transmission device 60 can implement the method and technical solution shown in FIG. 1 and be executed by an AP or a station.

The multi-link synchronous transmission device 60 may specifically include:

The first link synchronization group determining module 601 is used to determine at least one link synchronization group. The link synchronization group includes a primary link and its associated secondary link, and the secondary link is connected to the primary link. Link synchronization;

The first main channel determination module 602 is used for the main channel of the main link and the main channel of the auxiliary link, and the main channel of the main link and the main channel of the auxiliary link can perform main channel idle Channel assessment operation;

The data transmission module 603 is configured to perform multi-link synchronous transmission on the main link at least according to the evaluation result of the idle channel evaluation operation, or perform multi-link transmission on the main link and its associated auxiliary link Road synchronous transmission.

In a specific embodiment, the multi-link synchronous transmission device 60 is arranged on the AP side. The multi-link synchronous transmission device 60 may also include an information sending module (not shown) for sending beacon information or handshake information, where the beacon information or handshake information is used to indicate the link synchronization group, the The main channel of the main link and the main channel of the auxiliary link.

In a specific embodiment, the multi-link synchronous transmission device 60 is provided on the site side. . The multi-link synchronous transmission device 60 may also include an information receiving module (not shown) for receiving beacon information or handshake information, where the beacon information or handshake information is used to indicate the link synchronization group, the The main channel of the main link and the main channel of the auxiliary link.

Further, the first link synchronization group determination module 601 may determine, according to the beacon information or handshake information, that the same link as the main link of the access point is determined to be the main link of the station, and will be the same as the main link of the station. The link that is the same as the secondary link of the access point is determined to be the secondary link of the station; the first primary channel determining module 602 may determine the primary link with the access point according to the beacon information or handshake information The same channel as the primary channel of the site is the primary channel of the primary link of the site, and the channel that is the same as the primary channel of the secondary link of the access point is determined to be the primary channel of the secondary link of the site.

In a specific embodiment, the data transmission module 603 may include a secondary link detection unit (not shown in the figure), which is configured to: if the evaluation result of the primary channel of the primary link indicates that the channel contention is successful, then according to the primary link of the secondary link The channel evaluation result determines whether the channel where each of the secondary links is located is an idle channel; the transmission unit (not shown) is used to set the primary channel on the primary link if the primary channel where at least one of the secondary links is located is an idle channel. And the auxiliary link respectively transmit each data packet.

FIG. 7 is a schematic structural diagram of a multi-link synchronous receiving device according to an embodiment of the present invention. The multi-link synchronous receiving device 70 can implement the method and technical solution shown in FIG. 5, and is executed by an AP or a station.

The link synchronization receiving device 70 may specifically include:

The second link synchronization group determining module 701 is used to determine at least one link synchronization group. The link synchronization group includes a primary link and its associated secondary link, and the secondary link is connected to the primary link. Link synchronization;

The second primary channel determining module 702 is used to determine the primary channel of the primary link and the primary channel of the secondary link, and the primary channel of the primary link and the primary channel of the secondary link can execute the primary channel Clear channel assessment operation;

The data receiving module 703 is configured to receive data packets transmitted synchronously by multiple links on the main link, or receive data packets transmitted synchronously by multiple links on the main link and its associated auxiliary links.

For more details about the working principles and working methods of the multi-link synchronous transmission device 60 and the multi-link synchronous receiving device 70, reference may be made to the related descriptions in FIG. 1 to FIG. 5, which will not be repeated here.

The embodiment of the present invention also discloses a storage medium. The storage medium is a computer-readable storage medium on which computer instructions are stored. When the computer instructions are run, the method shown in FIG. 1, FIG. 2 or FIG. 5 can be executed. A step of. The storage medium may include ROM, RAM, magnetic disk or optical disk, etc. The storage medium may also include non-volatile memory (non-volatile) or non-transitory memory, etc.

The embodiment of the present invention also discloses a terminal. The terminal may include a memory and a processor, and computer instructions that can run on the processor are stored in the memory. When the processor runs the computer instructions, the steps of the method shown in FIG. 1, FIG. 2 or FIG. 5 may be executed. Specifically, the terminal may be a WLAN AP or a WLAN station. The terminal includes, but is not limited to, terminal devices such as mobile phones, computers, and tablets.

Although the present invention is disclosed as above, the present invention is not limited to this. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be subject to the scope defined by the claims.

Claims

A multi-link synchronous transmission method is characterized in that it includes:

Determining at least one link synchronization group, the link synchronization group including a primary link and its associated secondary link, and the secondary link is synchronized with the primary link;

Determining the primary channel of the primary link and the primary channel of the secondary link, the primary channel of the primary link and the primary channel of the secondary link can perform primary channel idle channel assessment operations;

At least according to the evaluation result of the free channel evaluation operation, multi-link synchronous transmission is performed on the main link, or multi-link synchronous transmission is performed on the main link and its associated auxiliary link.
The multi-link synchronous transmission method according to claim 1, wherein, for an access point, after determining the primary channel of the primary link and the primary channel of the secondary link, the method further comprises:

Send beacon information or handshake information, where the beacon information or handshake information is used to indicate the link synchronization group, the primary channel of the primary link, and the primary channel of the secondary link.
The multi-link synchronization transmission method according to claim 1, wherein, for a station, before the determining at least one link synchronization group, the method further comprises:

Receive beacon information or handshake information, where the beacon information or handshake information is used to indicate the link synchronization group, the primary channel of the primary link, and the primary channel of the secondary link.
The multi-link synchronization transmission method according to claim 3, wherein, for a station, determining at least one link synchronization group comprises:

According to the beacon information or handshake information, it is determined that the link that is the same as the primary link of the access point is determined to be the primary link of the station, and the link that is the same as the secondary link of the access point is determined to be The auxiliary link of the site;

The determining the primary channel of the primary link and the primary channel of the secondary link includes:

According to the beacon information or handshake information, it is determined that the same channel as the main channel of the main link of the access point is the main channel of the main link of the station, and the auxiliary link with the access point is determined The same channel as the primary channel is the primary channel of the secondary link of the site.
The multi-link synchronous transmission method according to claim 1, wherein the multi-link synchronous transmission is performed on the main link according to the evaluation result of the idle channel evaluation operation, or in the main link Multi-link synchronous transmission on the road and its associated auxiliary link includes:

If the evaluation result of the primary channel of the primary link indicates that the channel competition is successful, judge whether the channel where each secondary link is located is an idle channel according to the evaluation result of the primary channel of the secondary link;

If the primary channel where at least one of the secondary links is located is an idle channel, each data packet is transmitted on the primary link and the secondary link respectively.
The multi-link synchronous transmission method according to claim 1, wherein the multi-link synchronous transmission is performed on the main link at least according to the evaluation result of the idle channel evaluation operation, or the multi-link synchronous transmission is performed on the main link. Multi-link synchronous transmission on the link and its associated auxiliary link includes:

If the evaluation result of the primary link indicates that the channel where the primary link is located is successfully contended, and the evaluation result of the secondary link indicates that the primary channel where at least one secondary link is located is an idle channel, then the primary link And the at least one secondary link sends out a data packet.
The multi-link synchronous transmission method according to claim 1, wherein the multi-link synchronous transmission is performed on the main link at least according to the evaluation result of the idle channel evaluation operation, or the multi-link synchronous transmission is performed on the main link. Multi-link synchronous transmission on the link and its associated auxiliary link includes:

If the evaluation result of the primary link indicates that the channel where the primary link is located is successfully competed, and the evaluation result of the secondary link indicates that the channels where all secondary links are located are not idle channels, then send on the primary link data pack.
A multi-link synchronous receiving method, which is characterized in that it comprises:

Determining at least one link synchronization group, the link synchronization group including a primary link and its associated secondary link, and the secondary link is synchronized with the primary link;

Determining the primary channel of the primary link and the primary channel of the secondary link, the primary channel of the primary link and the primary channel of the secondary link can perform primary channel idle channel assessment operations;

Receive a data packet synchronously transmitted by a multi-link on the main link, or receive a data packet synchronously transmitted by a multi-link on the main link and its associated auxiliary link.
The multi-link synchronization receiving method according to claim 8, wherein the data sending end sends data packets on the primary link and at least one secondary link, and the method further comprises:

Receiving the data packet sent by the data sending end on the primary link and the at least one secondary link.
The multi-link synchronous receiving method according to claim 8, wherein the data sending end sends out data packets on the main link, and the multi-link transmission method further comprises:

Receiving the data packet sent by the data sending end on the main link.
A multi-link synchronous transmission device is characterized in that it comprises:

The first link synchronization group determining module is used to determine at least one link synchronization group, the link synchronization group includes a main link and its associated auxiliary link, the auxiliary link and the main link Way synchronization

The first main channel determining module is used for the main channel of the main link and the main channel of the auxiliary link, and the main channel of the main link and the main channel of the auxiliary link can execute the main channel idle channel Evaluation operation;

The data transmission module is configured to perform multi-link synchronous transmission on the main link at least according to the evaluation result of the idle channel assessment operation, or perform multi-link transmission on the main link and its associated auxiliary link Synchronous transmission.
A multi-link synchronous receiving device, which is characterized in that it comprises:

The second link synchronization group determining module is used to determine at least one link synchronization group, the link synchronization group including a main link and its associated auxiliary link, the auxiliary link and the main link Way synchronization

The second main channel determining module is used to determine the main channel of the main link and the main channel of the auxiliary link, and the main channel of the main link and the main channel of the auxiliary link can perform main channel idle Channel assessment operation;

The data receiving module is configured to receive data packets transmitted synchronously by multiple links on the main link, or receive data packets transmitted synchronously by multiple links on the main link and its associated auxiliary links.
A storage medium having computer instructions stored thereon, wherein the computer instructions execute the steps of the multi-link synchronous transmission method according to any one of claims 1 to 7 when the computer instructions are run, or any one of claims 8 to 10 One of the steps of the multi-link synchronous receiving method.
A terminal, comprising a memory and a processor, the memory stores computer instructions that can run on the processor, wherein the processor executes any of claims 1 to 7 when the computer instructions are executed. One of the steps of the multi-link synchronous transmission method, or the steps of the multi-link synchronous receiving method according to any one of claims 8 to 10.