CN114584933B

CN114584933B - Method, device, equipment and storage medium for reducing delay in wireless transmission

Info

Publication number: CN114584933B
Application number: CN202210207402.3A
Authority: CN
Inventors: 吴昊; 罗昌军; 尹蕾
Original assignee: Jimi Technology Co ltd
Current assignee: Jimi Technology Co ltd
Priority date: 2022-03-03
Filing date: 2022-03-03
Publication date: 2023-05-02
Anticipated expiration: 2042-03-03
Also published as: CN114584933A

Abstract

The application discloses a method, a device, equipment and a storage medium for reducing delay in wireless transmission. The method comprises the following steps: receiving one or more request messages from a first terminal, wherein the one or more request messages comprise at least one first timing wake-up information element and at least one second timing wake-up information element; and sending one or more response messages responding to the one or more request messages to the first terminal, wherein the one or more response messages comprise at least one third timing awakening information element and at least one fourth timing awakening information element. According to the method and the device, the access point and the terminal and the data transmission between the terminal and the terminal are cooperatively controlled, so that the transmission delay is reduced, the requirements of low-delay services, such as online movie playing service, online games and wireless screen throwing service, are met, and the user experience is improved.

Description

Method, device, equipment and storage medium for reducing delay in wireless transmission

Technical Field

The present invention relates to the field of communications, and in particular, to a method, an apparatus, a device, and a storage medium for reducing delay in wireless transmission.

Background

The 802.11be system, also known as the Extremely High Throughput (EHT) system, enhances functionality through a range of system characteristics and mechanisms to achieve extremely high throughput. As the use of Wireless Local Area Networks (WLANs) continues to grow, it is increasingly important to provide wireless data services in many environments, such as homes, businesses, and hotspots. In particular, video traffic will continue to be the dominant traffic type in many WLAN deployments. The throughput requirements of these applications are evolving due to the advent of 4k and 8k video (20 Gbps uncompressed rate). New high throughput, low latency applications such as virtual 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 delay requirements of these applications, users desire to support their applications over a WLAN with higher throughput, higher reliability, less delay and jitter, and higher power efficiency. Users desire improved integration with Time Sensitive Networks (TSNs) to support applications on heterogeneous ethernet and wireless LANs. The 802.11be network aims to ensure the competitiveness of WLAN by further improving the overall throughput and reducing the delay while ensuring backward compatibility and coexistence with legacy technology standards. 802.11 compatible devices operating in the 2.4GHz,5GHz and 6GHz frequency bands.

Disclosure of Invention

In the current wireless transmission scheme, for example, if a mobile phone needs to be screened to a projector, the mobile phone and the projector need to be within the coverage of the same AP (access point), and when the mobile phone screens an online movie to the projector, online movie data is firstly downloaded from a server to the mobile phone through the AP, and then the mobile phone screens to the projector, during which the transmission process involving the AP, the mobile phone and the projector is as follows: during downloading, the AP sends data to the mobile phone, and during screen projection, the mobile phone sends data to the AP, and then the AP sends data to the projector. Because the 802.11 system is a time division system, three times of data transmission cannot be synchronously carried out, and resources are required to be mutually competing, the whole screen throwing process is delayed greatly, the blocking phenomenon is serious, and the downloading of a film is delayed and the screen throwing delay is also caused. In the 802.11be system, a multilink device is introduced, including a multilink access point and a multilink terminal, between which a plurality of links can transmit simultaneously. In view of the foregoing, the present application provides a method, apparatus, device, and storage medium for reducing delay in wireless transmission.

In a first aspect, the present application provides a method for reducing delay in wireless transmission, including:

Receiving one or more request messages from a first terminal, wherein the one or more request messages comprise at least one first timing wake-up information element and at least one second timing wake-up information element, the first timing wake-up information element is used for setting a period for requesting the first terminal to transmit data with an access point, the second timing wake-up information element is used for setting a period for requesting the first terminal to transmit data with a second terminal, and the second timing wake-up information element comprises an indication for direct data transmission service between the terminals, wherein the first terminal is connected with the access point on a first link and is connected with the second terminal through a direct link;

and sending one or more response messages responding to the one or more request messages to the first terminal, wherein the one or more response messages comprise at least one third timing awakening information element and at least one fourth timing awakening information element, the third timing awakening information element comprises first awakening period information, the fourth timing awakening information element comprises an indication for direct data transmission service between the terminals and second awakening period information, the first awakening period information is used for indicating a period of data transmission between the first terminal and an access point, and the second awakening period information is used for indicating a period of data transmission between the first terminal and the second terminal.

In one embodiment, the method further comprises:

one or more second dormancy information elements are broadcasted on the second link, wherein the second dormancy information elements are used for indicating dormancy periods of no data sent on the second link, and the period starting time indicated by the second dormancy information elements is the same as the period starting time indicated by the second wakeup period information, and the intervals are the same.

In an embodiment, the first and third timing wake-up information elements further include an indication for low-delay service, and the method further includes:

one or more first dormancy information elements are broadcasted on a first link, wherein the first dormancy information elements are used for indicating dormancy periods of not sending data on the first link, and the period starting time indicated by the first dormancy information elements is the same as the period starting time indicated by the first awakening period information, and the intervals are the same.

In one embodiment, the method further comprises:

and sending one or more first messages to the second terminal, wherein the one or more first messages comprise the at least one fourth timing wakeup information element.

In one embodiment, the period indicated by the first awake period information does not overlap with the period indicated by the second awake period information.

In one embodiment, the first timing wake-up information element, the second timing wake-up information element, the third timing wake-up information element and the fourth timing wake-up information element each further include at least one of a request identifier and an indication of which links the wake-up period is used for, where the request identifier in the first timing wake-up information element and the request identifier in the third timing wake-up information element are the same or the indicated links are the same, and the request identifier in the second timing wake-up information element and the request identifier in the fourth timing wake-up information element are the same or the indicated links are the same.

In one embodiment, the first timing wake-up information element and the second timing wake-up information element each further include a wake-up duration and a wake-up interval.

In a second aspect, the present application provides a method for reducing delay in wireless transmission, applied to a first terminal, where the first terminal is connected to an access point on a first link and connected to a second terminal through a direct link on a second link, and includes:

sending one or more request messages to an access point, wherein the one or more request messages comprise at least one first timing wake-up information element and at least one second timing wake-up information element, the first timing wake-up information element is used for setting a time period for requesting the first terminal to transmit data with the access point, the second timing wake-up information element is used for setting a time period for requesting the first terminal to transmit data with the second terminal, and the second timing wake-up information element comprises an indication for direct data transmission service between the terminals;

Receiving one or more response messages sent by the access point and responding to the one or more request messages, wherein the one or more response messages comprise at least one third timing awakening information element and at least one fourth timing awakening information element, the third timing awakening information element comprises first awakening period information, the fourth timing awakening information element comprises an indication for direct data transmission service between terminals and second awakening period information, the first awakening period information is used for indicating a period of data transmission between a first terminal and the access point, and the second awakening period information is used for indicating a period of data transmission between the first terminal and the second terminal;

transmitting data with the access point on a first link according to a period indicated by the first wakeup period information;

and transmitting data with the second terminal on a second link according to the time period indicated by the second wake-up time period information.

In one embodiment, the method further comprises:

and receiving one or more second dormancy information elements broadcast by the access point on a second link, wherein the second dormancy information elements are used for indicating dormancy periods of no data sent on the second link, and the beginning time of the periods indicated by the second dormancy information elements is the same as the beginning time of the periods indicated by the second awakening period information, and the intervals are the same.

and receiving one or more first dormancy information elements broadcast by the access point on a first link, wherein the first dormancy information elements are used for indicating dormancy periods of not transmitting data on the first link, and the period starting time indicated by the first dormancy information elements is the same as the period starting time indicated by the first awakening period information, and the intervals are the same.

In a third aspect, the present application provides a method for reducing delay in wireless transmission, applied to a second terminal, where the second terminal is connected to a first terminal through a direct link on a second link, and the first terminal is further connected to an access point on a first link, where the method includes:

receiving one or more first messages sent by the access point, wherein the one or more first messages comprise at least one fourth timing wake-up information element, and the fourth timing wake-up information element comprises an indication for direct data transmission service between terminals and second wake-up period information, wherein the second wake-up period information is used for indicating a period of data transmission between the first terminal and the second terminal;

In one embodiment, at least one of the following is also included:

receiving one or more first dormancy information elements broadcast by the access point on a first link, wherein the first dormancy information elements are used for indicating dormancy periods of not transmitting data on the first link, and the period starting time indicated by the first dormancy information elements is the same as the period starting time indicated by the first wakeup period information and the intervals are the same;

And receiving one or more second dormancy information elements broadcast by the access point on a second link, wherein the second dormancy information elements are used for indicating dormancy periods of no data sent on the second link, and the period starting time indicated by the second dormancy information elements is the same as the period starting time indicated by the second wakeup period information, and the intervals are the same.

In one embodiment, the fourth timing wake-up information element further includes at least one of a request identifier and an indication of which links the wake-up period is used for.

In a fourth aspect, the present application provides an apparatus for reducing delay in wireless transmission, comprising:

a receiving module, configured to receive one or more request messages from a first terminal, where the one or more request messages include at least one first timing wakeup information element and at least one second timing wakeup information element, where the first timing wakeup information element is used to set a period for requesting the first terminal to transmit data with an access point, the second timing wakeup information element is used to set a period for requesting the first terminal to transmit data with a second terminal, and the second timing wakeup information element includes an indication for a direct data transmission service between the terminals, where the first terminal is connected with the access point on a first link and is connected with the second terminal through a direct link;

The sending module is configured to send one or more response messages in response to the one or more request messages to the first terminal, where the one or more response messages include at least one third timing wakeup information element and at least one fourth timing wakeup information element, the third timing wakeup information element includes first wakeup period information, and the fourth timing wakeup information element includes an indication for a direct data transmission service between terminals and second wakeup period information, where the first wakeup period information is used to indicate a period in which the first terminal and the access point transmit data, and the second wakeup period information is used to indicate a period in which the first terminal and the second terminal transmit data.

In one embodiment, the method further comprises:

and the second broadcasting module is used for broadcasting one or more second dormancy information elements on a second link, the second dormancy information elements are used for indicating dormancy periods of no data transmitted on the second link, and the period starting time indicated by the second dormancy information elements is the same as the period starting time indicated by the second awakening period information and the intervals are the same.

In an embodiment, the first and third timing wake-up information elements further include an indication for low-delay service, and the apparatus further includes:

And the first broadcasting module is used for broadcasting one or more first dormancy information elements on the first link, wherein the first dormancy information elements are used for indicating dormancy periods of no data transmitted on the first link, and the period starting time indicated by the first dormancy information elements is the same as the period starting time indicated by the first awakening period information, and the intervals are the same.

In one embodiment, the sending module is further configured to:

In a fifth aspect, the present application provides an apparatus for reducing delay in wireless transmission, applied to a first terminal, where the first terminal is connected to an access point on a first link, and connected to a second terminal on a second link through a direct link, and includes:

a sending module, configured to send one or more request messages to an access point, where the one or more request messages include at least one first timing wakeup information element and at least one second timing wakeup information element, where the first timing wakeup information element is used to set a period for requesting the first terminal to transmit data with the access point, the second timing wakeup information element is used to set a period for requesting the first terminal to transmit data with the second terminal, and the second timing wakeup information element includes an indication for direct data transmission service between the terminals;

The receiving module is used for receiving one or more response messages sent by the access point and responding to the one or more request messages, wherein the one or more response messages comprise at least one third timing awakening information element and at least one fourth timing awakening information element, the third timing awakening information element comprises first awakening period information, the fourth timing awakening information element comprises indication and second awakening period information for direct data transmission service between terminals, the first awakening period information is used for indicating a period of data transmission between a first terminal and the access point, and the second awakening period information is used for indicating a period of data transmission between the first terminal and the second terminal;

a first data module, configured to transmit data with the access point on a first link according to a period indicated by the first awake period information;

and the second data module is used for transmitting data with the second terminal on a second link according to the period indicated by the second wake-up period information.

In one embodiment, the apparatus further comprises:

and a second broadcast receiving module, configured to receive, on a second link, one or more second sleep information elements broadcasted by the access point, where the second sleep information elements are used to indicate a sleep period during which no data is sent on the second link, and a period start time indicated by the second sleep information elements is the same as a period start time indicated by the second wake-up period information, and the intervals are the same.

and the first broadcast receiving module is used for receiving one or more first dormancy information elements broadcast by the access point on a first link, wherein the first dormancy information elements are used for indicating dormancy periods of no data transmitted on the first link, and the period starting time indicated by the first dormancy information elements is the same as the period starting time indicated by the first wakeup period information, and the intervals are the same.

In a sixth aspect, the present application provides an apparatus for reducing delay in wireless transmission, applied to a second terminal, where the second terminal is connected to a first terminal through a direct link on a second link, and the first terminal is further connected to an access point on a first link, where the apparatus includes:

the receiving module is used for receiving one or more first messages sent by the access point, wherein the one or more first messages comprise at least one fourth timing wake-up information element, the fourth timing wake-up information element comprises an indication for direct data transmission service between terminals and second wake-up period information, and the second wake-up period information is used for indicating a period of data transmission between the first terminal and the second terminal;

And the data module is used for transmitting data with the second terminal on a second link according to the time period indicated by the second wake-up time period information.

In one embodiment, at least one of the following is also included:

a first broadcast receiving module, configured to receive, on a first link, one or more first sleep information elements broadcasted by the access point, where the first sleep information elements are used to indicate a sleep period during which data is not sent on the first link, and a period start time indicated by the first sleep information elements is the same as a period start time indicated by the first wake-up period information, and an interval is the same;

In a seventh aspect, the present application provides a communication system, including a first terminal, a second terminal, and an access point, where the first terminal is connected to the access point on a first link and is connected to the second terminal on a second link through a direct link, where the access point is configured to perform the method in the first aspect, the first terminal is configured to perform the method in the second aspect, and the second terminal is configured to perform the method in the third aspect.

In an eighth aspect, the present application provides an electronic device comprising a memory, a processor and a computer program stored on the memory, the processor, when executing the computer program, causing the electronic device to perform the method of any one of the first to third aspects.

In a ninth aspect, the present application provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method of any one of the first to third aspects above.

In a tenth aspect, the present application provides a computer program product comprising instructions which, when executed by a processor, implement the method of any one of the first to third aspects above.

It should be noted that, the apparatus according to the fourth aspect is used to implement the method according to the first aspect, the apparatus according to the fifth aspect is used to implement the method according to the second aspect, the apparatus according to the sixth aspect is used to implement the method according to the third aspect, the electronic device according to the eighth aspect, the storage medium according to the ninth aspect, and the computer program product according to the tenth aspect are used to implement the method according to any one of the first to third aspects, so that the same beneficial effects as those of the first, second, or third aspects can be achieved, and the embodiments of the present application will not be repeated.

According to the method and the device, the access point and the terminal and the data transmission between the terminal and the terminal are cooperatively controlled, so that the transmission delay is reduced, the requirements of low-delay services, such as online movie playing service, online games and wireless screen throwing service, are met, and the user experience is improved.

Drawings

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

fig. 2 is a schematic diagram of a communication system architecture during wireless transmission according to an embodiment of the present application;

fig. 3 is a schematic diagram of a method for reducing delay in wireless transmission according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

In order to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application. While the disclosure has been presented in terms of an exemplary embodiment or embodiments, it should be appreciated that the various aspects of the disclosure can be individually identified as a complete set of aspects. The following embodiments and features of the embodiments may be combined with each other without conflict.

In the embodiments of the present application, "at least one" means one or more, and "a plurality" means two or more. In order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first," "second," etc. are used to distinguish identical items or similar items having substantially the same function and effect, and those skilled in the art will understand that the words "first," "second," etc. do not limit the number and execution order, but merely illustrate and distinguish between the objects to be described, without dividing the order, and without indicating that the number of devices in the embodiments of the present application is not particularly limited, and cannot constitute any limitation to the embodiments of the present application.

In a multi-link scenario, typically one physical device may include multiple logical devices, each of which may independently transmit and receive data, and each of which operates on one link. However, due to the different performances of the physical devices, a plurality of logic devices of some physical devices can transmit and receive data at the same time and are not affected by each other, that is, each link transmits or receives data without being affected by other links, and such devices are called STR devices, that is, the STR devices can transmit and receive data at the same time, while a plurality of logic devices of some physical devices can only transmit data at the same time or can only receive data at the same time, and cannot transmit data at one link, and other links receive data, that is, NSTR devices, that is, cannot transmit and receive data at the same time.

Furthermore, a single link device has only one logical device and only one MAC address, while a multi-link device has one MAC address for each logical device affiliated to the multi-link device, e.g., a multi-link device operates with three logical devices, then there are four MAC addresses on this physical device, one for the multi-link device and one for each of the three logical devices.

Fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the present application. As shown in fig. 1, the communication system includes a first terminal STA MLD1, a second terminal STA MLD2, and an access point AP MLD, and in this embodiment, it is assumed that the first terminal STA MLD1, the second terminal STA MLD2, and the access point AP MLD all support multiple links, and the first terminal STA MLD1 includes two logic devices STA1 and STA2, the second terminal STA MLD2 includes two logic devices STA3 and STA4, and the access point AP MLD includes two logic devices AP1 and AP2. The method comprises the steps that STA MLD1 establishes connection with AP MLD, wherein STA1 is connected with AP1 on a link1, and STA2 is connected with AP2 on a link 2; STA MLD2 establishes a connection with AP MLD, where STA3 connects with AP1 on link1 and STA4 connects with AP2 on link2, as shown in fig. 1. In a specific embodiment, the first terminal STA MLD1 may be a mobile phone, and the second terminal STA MLD2 may be a projector, but the embodiment of the present application is not limited thereto.

It should be understood that fig. 1 is only a schematic architecture of a communication system, in this embodiment of the present application, the number of terminals and the number of access points in the communication system are not limited, more logic devices may be included in the terminals and the access points, and the number of logic devices in each terminal and the access point may be different. Those skilled in the art will appreciate that the term "Access Point (AP)" in accordance with the principles and functions described herein may also be used to describe an access port or any other device capable of receiving and transmitting wireless signals within a network architecture, and thus, the use of a wireless access point is merely exemplary.

With continued reference to fig. 1, STA MLD1 may establish a wireless transmission with STA MLD2, such as a wireless screen shot, or the like. The embodiment of the application takes wireless screen projection as an example for detailed description. Specifically, the STA MLD1 downloads data such as an online movie through the AP MLD; the STA MLD1 discovers STA MLD2 through an application layer, and the discovery of the application layer may be DLNA, miracast, chromecast or airlay and other application modes; the STA MLD1 selects to screen the STA MLD2 through an operation interface, and the STA MLD1 can acquire the address of the STA MLD2 at the moment; the STA2 of the STA MLD1 and the STA4 of the STA MLD2 establish a direct link on the link2, and in the process of establishing the direct link, the AP MLD can save the direct connection relation between the STA MLD1 and the STA MLD 2; after the direct link is established, the STA MLD1 downloads the data sent by the AP MLD on the link1, and sends the screen-throwing data to the STA MLD2 on the link2, as shown in fig. 2. It should be noted that, in the embodiment of the present application, the STA MLD2 may be a single link device, that is, when performing wireless transmission with the STA MLD1, the STA MLD2 may be connected with the STA MLD1 only on the link2, and not with the AP MLD.

Fig. 3 is a schematic diagram of a method for reducing delay in wireless transmission according to an embodiment of the present application. As shown in fig. 3, the method for reducing delay in wireless transmission includes the following:

101. STA MLD1 sends a request message containing a timing wakeup information element (e.g., TWT (target wake time) element) to AP MLD, where the request message may contain one or more timing wakeup information elements.

In some embodiments, the STA MLD1 may send two request messages to the AP MLD, where one request message includes a first timing wake-up information element TWT element1, and the other request message includes a second timing wake-up information element TWT element2, where TWT element1 is used to set a period for requesting the STA MLD1 to transmit data with the AP MLD, TWT element2 is used to set a period for requesting the STA MLD1 to transmit data with the STA MLD2, and TWT element2 includes an indication for direct data transmission service between terminals, and optionally TWT element1 may also include an indication for low latency service.

Optionally, the request message including the TWT element1 may include a plurality of TWT elements 1 for requesting a period of data transmission between the plurality of STAs MLD1 and the AP MLD, where the plurality of TWT elements 1 may also be sent to the AP MLD through a plurality of request messages; the request message including the TWT element2 may include a plurality of TWT elements 2 for requesting a plurality of periods of data transmission between the STA MLD1 and the STA MLD2, and the plurality of TWT elements 2 may also be sent to the AP MLD through a plurality of request messages.

In some embodiments, STA MLD1 may send a request message to AP MLD, where the request message includes TWT element1 and TWT element2. Optionally, the request message may also include a plurality of TWT elements 1 and a plurality of TWT elements 2, which are used for requesting a period for transmitting data between the plurality of STAs MLD1 and the AP MLD and a period for transmitting data between the plurality of STAs MLD1 and the STA MLD2, and the plurality of TWT elements 1 and the plurality of TWT elements 2 may also be sent to the AP MLD through the plurality of request messages.

Illustratively, TWT element1 contains the following parameters:

TWT request: for indicating the type of message, for example, setting to 1 indicates that the message containing the timed wake-up information element is a timed wake-up request message; a setting of 0 indicates that the message containing the timed wakeup information element is a timed wakeup response message. The embodiment of the application is set to 1, denoted as request message.

TWT flow ID: for identifying the current request, i.e. the request identification, the embodiment of the present application is set to 1.

Traffic ID: an optional parameter, indicating the traffic type, e.g. set to a specific value X, is indicated for low delay traffic, where X may be an integer greater than or equal to 0. Alternatively, the parameter Traffic ID may be replaced with a parameter Low latency Traffic indicating whether or not to use for low-delay Traffic, such as setting the parameter to 1 for low-delay Traffic and setting the parameter to 0 for other Traffic.

Illustratively, TWT element2 contains the following parameters:

TWT flow ID: for identifying the current request, i.e. the request identification, the embodiment of the present application is set to 2.

Traffic ID: for indicating the traffic type, for example, set to a specific value Y, which may be an integer greater than or equal to 0 and the values of X and Y are different, means for direct data transmission traffic between terminals. Alternatively, the parameter Traffic ID may be replaced with a parameter STA direct Traffic indicating whether to use for direct data transmission service between terminals, for example, the parameter is set to 1 for direct data transmission service between terminals and 0 for other services.

It should be noted that, the STA MLD1 may be connected to the AP MLD on multiple links, or may be connected to the STA MLD2 on multiple links, where when the STA MLD1 is connected to the AP MLD on multiple links, the links may share the same first timing wake-up information element, or may have own first timing wake-up information element in each link, and these first timing wake-up information elements may be sent through one request message or may be sent through multiple request messages; when the STA MLD1 is connected to the STA MLD2 on multiple links, the links may share the same second timing wake-up information element, or each link may have its own second timing wake-up information element, and the second timing wake-up information elements may be sent through one request message or multiple request messages.

102. The AP MLD sends a response message containing a timing wakeup information element (e.g., TWT (target wake time) element) to the STA MLD1, where the response message may include one or more timing wakeup information elements.

In some embodiments, the AP MLD may send two response messages to the STA MLD1, where one response message includes a third timing wake-up information element TWT element3, and the other response message includes a fourth timing wake-up information element TWT element4, where TWT element3 is used to set a period in which the STA MLD1 and the AP MLD transmit data, TWT element4 is used to set a period in which the STA MLD1 and the STA MLD2 transmit data, and TWT element3 includes first wake-up period information, TWT element4 includes an indication for a direct data transmission service between terminals and second wake-up period information, where the first wake-up period information is used to indicate a period in which the first terminal and the access point transmit data, and the second wake-up period information is used to indicate a period in which the first terminal and the second terminal transmit data. Optionally, an indication for low latency traffic may also be included in TWT element 3.

Optionally, the response message including the TWT element3 may include a plurality of TWT elements 3 for setting a period of transmitting data between the STA MLD1 and the AP MLD, where the plurality of TWT elements 3 may also be sent to the STA MLD1 through a plurality of response messages; the response message including the TWT element4 may include a plurality of TWT elements 4 for setting a period for transmitting data between the STA MLD1 and the STA MLD2, and the plurality of TWT elements 4 may also be sent to the STA MLD1 through a plurality of response messages.

In some embodiments, the AP MLD may send a response message to STA MLD1, where the response message includes TWT element3 and TWT element4. Optionally, the response message may also include a plurality of TWT elements 3 and a plurality of TWT elements 4, which are used to set a period for transmitting data between the plurality of STA MLD1 and the AP MLD and a period for transmitting data between the plurality of STA MLD1 and the STA MLD2, where the plurality of TWT elements 3 and the plurality of TWT elements 4 may also be sent to the STA MLD1 through the plurality of response messages.

Illustratively, TWT element3 contains the following parameters:

TWT request: for indicating the type of message, for example, setting to 1 indicates that the message containing the timed wake-up information element is a timed wake-up request message; a setting of 0 indicates that the message containing the timed wakeup information element is a timed wakeup response message. The embodiment of the application is set to 0 and is represented as a response message.

TWT flow ID: for identifying the request to which the response is directed, i.e., the request identification, the embodiment of the present application is set to 1.

TWT wake time: wake-up start time.

TWT wake duration: the duration of the wakeup.

TWT wake interval: interval of wakeup.

Illustratively, TWT element4 contains the following parameters:

TWT flow ID: for identifying the request to which the response is directed, i.e., the request identification, the present embodiment is set to 2.

TWT wake time: wake-up start time.

TWT wake duration: the duration of the wakeup.

TWT wake interval: interval of wakeup.

It should be noted that, the STA MLD1 may be connected to the AP MLD on multiple links, or may be connected to the STA MLD2 on multiple links, where when the STA MLD1 is connected to the AP MLD on multiple links, the links may share the same third timing wake-up information element, or may have own third timing wake-up information element in each link, and these third timing wake-up information elements may be sent through one response message or may be sent through multiple response messages; when the STA MLD1 is connected to the STA MLD2 on multiple links, the links may share the same fourth timing wake-up information element, or each link may have its own fourth timing wake-up information element, and the fourth timing wake-up information elements may be sent through one response message or multiple response messages.

It should be understood that, in the embodiment of the present application, both STA MLD1 and STA MLD2 may be STR devices and may also be NSTR devices, when STA MLD1 is an STR device, a period in which STA MLD1 transmits data with AP MLD and a period in which STA MLD1 transmits data with STA MLD2 may overlap or may not overlap, and when STA MLD1 is an NSTR device, a period in which STA MLD1 transmits data with AP MLD and a period in which STA MLD1 transmits data with STA MLD2 may not overlap. If STA MLD2 is connected with STA MLD1 on multiple links, when STA MLD1 and STA MLD2 are both STR devices, the periods during which STA MLD1 and STA MLD2 transmit data on the multiple links may be different, otherwise, the periods during which STA MLD1 and STA MLD2 transmit data on the multiple links are the same.

For example, when the period in which the STA MLD1 transmits data with the AP MLD and the period in which the STA MLD1 transmits data with the STA MLD2 do not overlap, the configuration of the period indicated by the first awake period information in the TWT element3 (hereinafter, simply referred to as period 1) and the period indicated by the second awake period information in the TWT element4 (hereinafter, simply referred to as period 2) may be set as follows:

1) The start times indicated by the TWT wake times are different;

2) Time periods 1 and 2 determined by the start time indicated by the TWT wake time and the duration indicated by TWT wake duration do not overlap, and the time gap TG between the two time periods is not less than one SIFS (short inter-frame space time) or PIFS (central coordination inter-frame space), the SIFS may be set to 10 microseconds, and the PIFS may be set to 30 microseconds;

3) The TWT wake interval wake-up intervals of the period 1 and the period 2 can be set to be the same value or a value of a multiple relationship, so that each wake-up time length of the period 1 and the period 2 cannot be overlapped under interval setting;

4) TWT wake duration in period 1, TWT wake duration in period 2 and the sum of the time gaps TG between the two periods is less than or equal to TWT wake interval (when TWT wake interval for the two periods are equal, if not, the maximum value of the two is taken).

103. The STA MLD1 receives a response message including a timing wakeup information element sent by the AP MLD, where the response message includes TWT element3 and TWT element4.

104. The STA MLD1 receives data sent by the AP MLD on the link1 according to the period indicated in the TWT element3, specifically, the logic device STA1 receives data sent by the AP1 on the link 1.

105. The STA MLD1 transmits data to the STA MLD2 on the link2 according to the period indicated in the TWT element4, specifically, the logical device STA2 transmits data to the STA4 on the link 2.

106. The STA MLD2 receives data sent by the STA MLD1 on the link2, specifically, the logic device STA4 receives data sent by the STA2 on the link 2.

In some embodiments, the AP MLD may further send a first message including the timing wake-up information element to the STA MLD2, where the first message includes the TWT element4 described above, and after the STA MLD2 receives the first message including the TWT element4, the data sent by the STA MLD1 may be received on the link2 according to the period indicated in the TWT element4.

In some embodiments, the AP MLD may also broadcast a sleep information element (e.g., a squit element), where the period indicated by the timed wakeup information element indicates that the terminal corresponding to the direct data transmission service between terminals does not consider the sleep information element, or where the period indicated by the timed wakeup information element indicates that the terminal receiving the timed wakeup information element indicates that the terminal for the low delay service does not consider the sleep information element, otherwise, the period indicated by the sleep information element does not transmit data. The method of reducing delay in wireless transmissions further comprises the following:

107. the AP2 belonging to the AP MLD broadcasts, on the link2, a sleep period including one or more second sleep information elements, the quit element2 being used to indicate that no data is transmitted on the link2, and the sleep period start time set in the quit element2 is the same as the wake period start time defined in the TWT element4, and the intervals are the same.

108. And receiving the broadcast message by the terminal connected with the AP MLD on the link2, and not transmitting data on the link2 by the terminals except the STA MLD1 and the STA MLD2 according to the period indicated by the quick element 1.

109. If the TWT element1 and the TWT element3 further include an indication for low latency traffic, the AP1 belonging to the AP MLD may broadcast, on the link1, a sleep period including one or more first sleep information elements, the quit element1, where the quit element1 is used to indicate that no data is sent on the link1, and the sleep period start time set in the quit element1 is the same as the wake period start time defined in the TWT element3, and the interval is the same.

110. And receiving the broadcast message by the terminals connected with the AP MLD on the link1, and not transmitting data on the link1 by the terminals except the STA MLD1 according to the time period indicated by the quick element 1.

In some embodiments, an indication of which links to use for the wake period may also be included in each of TWT element1, TWT element2, TWT element3 and TWT element4, with the links indicated in TWT element1 and TWT element3 being the same and the links indicated in TWT element2 and TWT element4 being the same. Specifically, the TWT elements 1 and 3 further include a parameter Link info, which is used to indicate which links are used in the wake-up period, and in this embodiment of the present application, link1 is set; the TWT elements 2 and 4 further include a parameter Link info, which indicates for which links the wake-up period is used, and in this embodiment of the present application, link2 is set. Thus, the STA MLD1 may indicate that the requested wake-up period is used for Link1 or Link2 through the Link info setting, and meanwhile, the AP MLD may also perform allocation of the wake-up period on Link1 and Link2 according to the indication of the STA MLD 1.

In some embodiments, the TWT element1 and the TWT element2 each further include a duration of waking and an interval of waking. For example, TWT element1 may also contain the following parameters:

TWT wake duration: duration of wake-up;

TWT wake interval: interval of wakeup.

The values of TWT wake duration and TWT wake interval may be determined by the service, and take downloading an online movie and dropping the online movie as an example:

STA MLD1 acquires a data format of an online movie, where the acquired resolution is h×v, where H is a horizontal pixel of the movie, V is a vertical pixel of the movie, and the frame rate is 60Hz; it may be set to:

TWT wake interval＝1/60＝16.67ms；

TWT wake duration = (h×v×8)/sr_link1, where sr_link1 represents the transmission rate supported by AP MLD on link 1.

Likewise, TWT element2 may also contain the following parameters:

TWT wake duration: duration of wake-up;

TWT wake interval: interval of wakeup.

Wherein TWT wake interval =1/60=16.67 ms;

TWT wake duration = (hxv×8)/sr_link2+transaction_delay, where sr_link2 represents the transmission rate supported on link2 determined by STA MLD1 and STA MLD2 when establishing a direct link, and transaction_delay represents the input/output delay and data codec processing delay at the device port.

It should be understood that, when STA MLD1 and STA MLD2 transmit data, STA MLD1 may not need to download data from AP MLD, and at this time, STA MLD1 may send a request message to AP MLD, where the request message may only include TWT element2. Optionally, the request message may also include a plurality of TWT elements 2 for requesting a period for transmitting data between the plurality of STAs MLD1 and MLD2, and the plurality of TWT elements 2 may also be sent to the AP MLD through the plurality of request messages. Accordingly, the response message sent by the AP MLD to the STA MLD1 may also include only the TWT element4.

The embodiment of the application also provides a device for reducing delay in wireless transmission, which comprises:

Optionally, the method further comprises:

Optionally, the first and third timing wake-up information elements further include an indication for low-delay service, and the apparatus further includes:

Optionally, the sending module is further configured to:

The embodiment of the application also provides a device for reducing delay in wireless transmission, which is applied to a first terminal, wherein the first terminal is connected with an access point on a first link, and is connected with a second terminal through a direct link on a second link, and the device comprises:

Optionally, the apparatus further comprises:

The embodiment of the application also provides a device for reducing delay in wireless transmission, which is applied to a second terminal, wherein the second terminal is connected with a first terminal on a second link through a direct link, and the first terminal is also connected with an access point on a first link, and the device comprises:

Optionally, at least one of the following is also included:

It should be understood that the apparatus herein is embodied in the form of functional modules. The term module herein may refer to an application specific integrated circuit (application specific integrated circuit, ASIC), an electronic circuit, a processor (e.g., a shared, dedicated, or group processor, etc.) 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 function 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 embodiments of the present application, the apparatus may also be a chip or a chip system, for example: system on chip (SoC). The present application is not limited herein.

The embodiment of the application also provides an electronic device, and fig. 4 is a schematic structural diagram of the electronic device provided in the embodiment of the application. As shown in fig. 4, 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 instructions executable by the processor 301 are stored in the memory 302, and are loaded and executed by the processor 301 to control the communication interface 303 to send signals and/or receive signals.

It should be understood that the apparatus 300 may be specifically STA MLD1 or STA MLD2 or AP MLD in the above embodiments, or the functions of STA MLD1 or STA MLD2 or AP MLD in the above embodiments may be integrated in the apparatus 300, and the apparatus 300 may be configured to perform the respective steps and/or flows corresponding to STA MLD1 or STA MLD2 or AP MLD in the above embodiments. Alternatively, the memory 302 may include read-only memory and random access memory, and provide instructions and data to the processor 301. A portion of memory 302 may also include non-volatile random access memory. For example, the memory 302 may also store information of the device type. The processor 301 may be configured to execute instructions stored in the memory 301, and when the processor 301 executes the instructions, the processor 301 may perform corresponding steps and/or flows in the above-described method embodiments.

It should be appreciated that in embodiments of the present application, the processor may be a central processing unit (centralprocessing unit, CPU), the processor may also be other general purpose processors, digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. 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 application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor for execution. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor executes instructions in the memory to perform the steps of the method described above in conjunction with its hardware. To avoid repetition, a detailed description is not provided herein.

The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination. 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. When the computer instructions or computer program are loaded or executed on a computer, the processes or functions described in accordance with the embodiments of the present application are all or partially produced. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. 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 site, computer, server, or data center to another website site, computer, server, or data center by wired (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may 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 sets 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 application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application. The modules described as separate components may or may not be physically separate, and components displayed as modules may or may not be physical modules, that is, may be located in one place, or may 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 purposes of the embodiments of the present application.

In the several embodiments provided in this application, it should be understood that the disclosed apparatus, device, and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, and for example, the division of the modules is merely a logical function division, and there may be other manners of dividing the modules or components into multiple modules or components when actually implemented, or multiple modules or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or modules, which may be in electrical, mechanical, or other forms.

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 solution. 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 application.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for reducing delay in wireless transmissions, comprising:

Transmitting one or more response messages responding to the one or more request messages to the first terminal, wherein the one or more response messages comprise at least one third timing awakening information element and at least one fourth timing awakening information element, the third timing awakening information element comprises first awakening period information, the fourth timing awakening information element comprises an indication for direct data transmission service between the terminals and second awakening period information, the first awakening period information is used for indicating a period of data transmission between the first terminal and an access point, and the second awakening period information is used for indicating a period of data transmission between the first terminal and the second terminal;

one or more second dormancy information elements are broadcast on a second link, the second dormancy information elements are used for indicating that the terminals except the first terminal and the second terminal do not send data on the second link according to the time periods indicated by the second dormancy information elements, the second dormancy information elements are used for indicating the dormancy time periods of not sending data on the second link, and the time period starting time indicated by the second dormancy information elements is the same as the time period starting time indicated by the second wakeup time period information, and the intervals are the same.

2. The method for latency reduction in wireless transmission of claim 1, wherein the first and third timing wakeup information elements further include an indication for low latency traffic, the method further comprising:

one or more first dormancy information elements are broadcast on a first link, the first dormancy information elements are used for indicating dormancy periods of not sending data on the first link according to periods indicated by the first dormancy information elements, the period starting time indicated by the first dormancy information elements is the same as the period starting time indicated by the first wakeup period information, and the intervals are the same.

3. The method for delay reduction in wireless transmissions of claim 1, further comprising:

4. The method of claim 1, wherein the period indicated by the first awake period information does not overlap with the period indicated by the second awake period information.

5. The method of claim 1, wherein the first timing wakeup information element, the second timing wakeup information element, the third timing wakeup information element, and the fourth timing wakeup information element each further comprise at least one of a request identifier and an indication of which links the wakeup period is for, and wherein the request identifier in the first timing wakeup information element and the request identifier in the third timing wakeup information element are the same or the indicated links are the same, and wherein the request identifier in the second timing wakeup information element and the request identifier in the fourth timing wakeup information element are the same or the indicated links are the same.

6. The method of claim 1, wherein the first timing wakeup information element and the second timing wakeup information element each further include a wakeup duration and a wakeup interval.

7. A method for reducing delay in wireless transmission, applied to a first terminal, the first terminal being connected to an access point on a first link and being connected to a second terminal by a direct link on a second link, comprising:

transmitting data with the second terminal on a second link according to the period indicated by the second wakeup period information;

and receiving one or more second dormancy information elements broadcast by the access point on a second link, wherein the second dormancy information elements are used for indicating that terminals except the first terminal and the second terminal do not send data on the second link according to a period indicated by the second dormancy information elements, and the starting time of the period indicated by the second dormancy information elements is the same as the starting time of the period indicated by the second wakeup period information and the interval is the same.

8. The method for reducing delay in wireless transmission of claim 7 wherein the first and third timing wakeup information elements further comprise an indication for low delay traffic, the method further comprising:

and receiving one or more first dormancy information elements broadcast by the access point on a first link, wherein the first dormancy information elements are used for indicating terminals except for a first terminal to not send data on the first link according to a period indicated by the first dormancy information elements, and the period starting time indicated by the first dormancy information elements is the same as the period starting time indicated by the first wakeup period information, and the intervals are the same.

9. The method of reducing latency in wireless transmissions of claim 7, wherein a period indicated by the first awake period information does not overlap with a period indicated by the second awake period information.

10. The method of claim 7, wherein the first timing wakeup information element, the second timing wakeup information element, the third timing wakeup information element, and the fourth timing wakeup information element each further comprise at least one of a request identifier and an indication of which links the wakeup period is for, and wherein the request identifier in the first timing wakeup information element and the request identifier in the third timing wakeup information element are the same or the indicated links are the same, and wherein the request identifier in the second timing wakeup information element and the request identifier in the fourth timing wakeup information element are the same or the indicated links are the same.

11. The method of claim 7, wherein the first timing wakeup information element and the second timing wakeup information element each further include a wakeup duration and a wakeup interval.

12. A method for reducing delay in wireless transmission, applied to a second terminal, the second terminal being connected to a first terminal by a direct link on a second link, comprising:

receiving one or more first messages sent by an access point, wherein the one or more first messages comprise at least one fourth timing wake-up information element, and the fourth timing wake-up information element comprises an indication for direct data transmission service between terminals and second wake-up period information, wherein the second wake-up period information is used for indicating a period of data transmission between the first terminal and the second terminal;

transmitting data with the first terminal on a second link according to the period indicated by the second wakeup period information;

13. The method of reducing delay in wireless transmissions of claim 12 wherein the second terminal is further coupled to the access point over a first link, further comprising:

receiving one or more first sleep information elements broadcast by the access point on a first link, the first sleep information elements being used to indicate sleep periods during which no data is transmitted on the first link;

and not transmitting data on the first link according to the period indicated by the first dormancy information element.

14. The method of claim 12, wherein the fourth timing wakeup information element further includes at least one of a request identification and an indication of which links to use for the wakeup period.

15. An apparatus for reducing delay in wireless transmissions, comprising:

A sending module, configured to send one or more response messages in response to the one or more request messages to the first terminal, where the one or more response messages include at least one third timing wakeup information element and at least one fourth timing wakeup information element, the third timing wakeup information element includes first wakeup period information, and the fourth timing wakeup information element includes an indication for a direct data transmission service between terminals and second wakeup period information, where the first wakeup period information is used to indicate a period in which the first terminal and the access point transmit data, and the second wakeup period information is used to indicate a period in which the first terminal and the second terminal transmit data;

and the second broadcasting module is used for broadcasting one or more second dormancy information elements on a second link, indicating that the terminals except the first terminal and the second terminal do not transmit data on the second link according to the period indicated by the second dormancy information elements, wherein the second dormancy information elements are used for indicating the dormancy period of not transmitting data on the second link, and the period starting time indicated by the second dormancy information elements is the same as the period starting time indicated by the second wakeup period information, and the intervals are the same.

16. The apparatus for reducing delay in wireless transmissions of claim 15 wherein the first and third timing wakeup information elements further comprise an indication for low delay traffic, the apparatus further comprising:

the first broadcasting module is configured to broadcast one or more first sleep information elements on a first link, and instruct terminals other than the first terminal to not transmit data on the first link according to a period indicated by the first sleep information elements, where the first sleep information elements are used to indicate a sleep period in which data is not transmitted on the first link, and a period start time indicated by the first sleep information elements is the same as a period start time indicated by the first wake-up period information, and the intervals are the same.

17. The apparatus for reducing delay in wireless transmissions of claim 15 wherein the transmitting module is further configured to:

18. An apparatus for reducing delay in wireless transmission, applied to a first terminal, the first terminal being connected to an access point on a first link and being connected to a second terminal via a direct link on a second link, comprising:

a second data module, configured to transmit data with the second terminal on a second link according to a period indicated by the second wakeup period information;

and the second broadcast receiving module is used for receiving one or more second dormancy information elements broadcast by the access point on a second link, the second dormancy information elements are used for indicating that the terminals except the first terminal and the second terminal do not send data on the second link according to the time period indicated by the second dormancy information elements, and the time period starting time indicated by the second dormancy information elements is the same as the time period indicated by the second wakeup time period information, and the intervals are the same.

19. The apparatus for reducing delay in wireless transmissions of claim 18 wherein the first and third timing wakeup information elements further comprise an indication for low delay traffic, the apparatus further comprising:

and the first broadcast receiving module is used for receiving one or more first dormancy information elements broadcast by the access point on a first link, the first dormancy information elements are used for indicating terminals except for the first terminal to not send data on the first link according to the time period indicated by the first dormancy information elements, and the time period starting time indicated by the first dormancy information elements is the same as the time period starting time indicated by the first wakeup time period information and the intervals are the same.

20. An apparatus for reducing delay in wireless transmission, applied to a second terminal, the second terminal being connected to a first terminal via a direct link over a second link, comprising:

the device comprises a receiving module, a receiving module and a sending module, wherein the receiving module is used for receiving one or more first messages sent by an access point, the one or more first messages comprise at least one fourth timing awakening information element, the fourth timing awakening information element comprises an indication for direct data transmission service between terminals and second awakening period information, and the second awakening period information is used for indicating the period of data transmission between the first terminal and the second terminal;

a data module, configured to transmit data with the first terminal on a second link according to a period indicated by the second wakeup period information;

21. The apparatus for reducing delay in wireless transmissions of claim 20 wherein the second terminal is further coupled to the access point over a first link, the apparatus further comprising:

the first broadcast receiving module is used for receiving one or more first dormancy information elements broadcasted by the access point on a first link, wherein the first dormancy information elements are used for indicating dormancy period data modules which do not send data on the first link, and the first broadcast receiving module is also used for not sending data on the first link according to the period indicated by the first dormancy information elements.

22. A communication system comprising a first terminal, a second terminal and an access point, wherein the first terminal is connected to the access point over a first link and to the second terminal over a direct link, characterized in that the access point is adapted to perform the method of any of claims 1-6, the first terminal is adapted to perform the method of any of claims 7-11, and the second terminal is adapted to perform the method of any of claims 12-14.

23. An electronic device comprising a memory, a processor and a computer program stored on the memory, wherein the processor, when executing the computer program, causes the electronic device to perform the method of any one of claims 1-14.

24. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the method of any of claims 1-14.