CN114584933A

CN114584933A - Method, device, equipment and storage medium for reducing delay in wireless transmission

Info

Publication number: CN114584933A
Application number: CN202210207402.3A
Authority: CN
Inventors: 吴昊; 罗昌军; 尹蕾
Original assignee: Chengdu Jimi Technology Co Ltd
Current assignee: Chengdu Jimi Technology Co Ltd
Priority date: 2022-03-03
Filing date: 2022-03-03
Publication date: 2022-06-03
Anticipated expiration: 2042-03-03
Also published as: CN114584933B

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 awakening information element and at least one second timing awakening 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 timed awakening information element and at least one fourth timed awakening information element. According to the method and the device, cooperative control is carried out on the access point and the terminal and data transmission between the terminal and the terminal, so that transmission delay is reduced, the requirements of low-delay services are met, such as an online movie playing service, an online game and a wireless screen projection service, and user experience is improved.

Description

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

Technical Field

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

In view of the high throughput and stringent real-time latency requirements of these applications, users expect higher throughput, higher reliability, less latency and jitter, and higher power efficiency when supporting their applications over a WLAN. Users desire improved integration with Time Sensitive Networks (TSNs) to support applications on heterogeneous ethernet and wireless LANs. 802.11be networks aim to ensure the competitiveness of WLANs by further increasing overall throughput and reducing latency, while ensuring backward compatibility and coexistence with legacy technology standards. 802.11 compatible devices operating in the 2.4GHz, 5GHz and 6GHz bands.

Disclosure of Invention

In the current wireless transmission scheme, for example, if a mobile phone needs to project a screen 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 projects an online movie to the projector, the online movie data is firstly downloaded from a server to the mobile phone through the AP, and then the mobile phone projects the screen 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, 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 performed synchronously, and resources need to be contended mutually, so that the delay of the whole screen projection process is large, and the pause phenomenon is serious, which not only causes the delay of downloading the film, but also causes the delay of screen projection. In the 802.11be system, a multi-link device is introduced, which comprises a multi-link access point and a multi-link terminal, and a plurality of links can be simultaneously used for transmission between the multi-link access point and the multi-link terminal. In view of the foregoing, the present application provides a method, an apparatus, a device and a 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 awakening information element and at least one second timing awakening information element, the first timing awakening information element is used for setting a time period for requesting the first terminal and an access point to transmit data, the second timing awakening information element is used for setting a time period for requesting the first terminal and the second terminal to transmit data, and the second timing awakening 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 on a second 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 wakeup information element and at least one fourth timing wakeup information element, the third timing wakeup information element comprises first wakeup period information, the fourth timing wakeup information element comprises an indication for direct data transmission service between the terminals and second wakeup period information, the first wakeup period information is used for indicating a period for the first terminal and the access point to transmit data, and the second wakeup period information is used for indicating a period for the first terminal and the second terminal to transmit data.

In one embodiment, the method further comprises:

broadcasting one or more second dormancy itoms on the second link, wherein the second dormancy itoms are used for indicating dormant periods in which data is not transmitted on the second link, and the period start time indicated by the second dormancy itoms is the same as the period start time indicated by the second wakeup period information, and the interval is the same.

In one embodiment, the first and third timed wake-up ie further include an indication for low latency traffic, and the method further includes:

broadcasting one or more first dormancy information elements on the first link, wherein the first dormancy information elements are used for indicating dormancy periods in which data is not transmitted on the first link, and the period start time indicated by the first dormancy information elements is the same as the period start time indicated by the first awakening period information and the interval is 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, each of the first, second, third and fourth timed wake-up information elements further includes at least one of a request identifier and an indication indicating which link the wake-up period is used for, and the request identifiers in the first and third timed wake-up information elements are the same or the indicated links are the same, and the request identifiers in the second and fourth timed wake-up information elements are the same or the indicated links are the same.

In one embodiment, the first and second timed wake-up ie 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, which is applied to a first terminal, where the first terminal is connected to an access point on a first link and is connected to a second terminal through a direct link on a second link, and the method includes:

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

transmitting data with the access point on a first link according to the time interval indicated by the first awakening time interval information;

and transmitting data with the second terminal on a second link according to the time interval indicated by the second awakening time interval information.

In one embodiment, the method further comprises:

and receiving one or more second dormancy information elements broadcasted by the access point on a second link, wherein the second dormancy information elements are used for indicating dormancy periods in which data is not transmitted on the second link, and the period start time indicated by the second dormancy information elements is the same as the period start time indicated by the second wakeup period information and the interval is the same.

receiving one or more first dormancy information elements broadcasted by the access point on the first link, wherein the first dormancy information elements are used for indicating dormancy periods in which data is not 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 interval is the same.

In one embodiment, the first and second timed wakeup information elements each further include wakeup duration and wakeup interval.

In a third aspect, the present application provides a method for reducing delay in wireless transmission, where the method is 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 the first link, and 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 wakeup information element, and the fourth timing wakeup information element comprises an indication for direct data transmission service between terminals and second wakeup period information, and the second wakeup period information is used for indicating a period for 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 broadcasted by the access point on a first link, wherein the first dormancy information elements are used for indicating dormancy periods during which data is not 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 interval is the same;

and receiving one or more second dormancy information elements broadcasted by the access point on a second link, wherein the second dormancy information elements are used for indicating dormancy periods in which data is not 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 wakeup period information and the interval is the same.

In one embodiment, the fourth timed wake up information element further comprises at least one of a request identification and an indication of which links the wake up period is 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, the first timing wakeup information element is used to set a time period for requesting the first terminal to transmit data with an access point, the second timing wakeup information element is used to set a time period for requesting the first terminal to transmit data with the second terminal, and the second timing wakeup information element includes an indication for a direct data transmission service between terminals, where the first terminal is connected to the access point on a first link and is connected to the second terminal through a direct link on a second link;

a sending module, configured to send one or more response messages responding to the one or more request messages to the first terminal, where the one or more response messages include at least one third timed wake-up information element and at least one fourth timed wake-up information element, the third timed wake-up information element includes first wake-up period information, and the fourth timed wake-up information element 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 during which the first terminal and the access point transmit data, and the second wake-up period information is used to indicate a period during which the first terminal and the second terminal transmit data.

In one embodiment, the method further comprises:

a second broadcasting module, configured to broadcast one or more second dormancy information elements on a second link, where the second dormancy information element is used to indicate a dormancy time period during which data is not sent on the second link, and a time period start time indicated by the second dormancy information element is the same as a time period start time indicated by the second wakeup time period information and has the same interval.

In one embodiment, the first and third timed wake-up ie further include an indication for low latency traffic, and the apparatus further includes:

the first broadcasting module is configured to broadcast one or more first dormancy ie on a first link, where the first dormancy ie is used to indicate a dormancy period during which data is not transmitted on the first link, and a period start time indicated by the first dormancy ie is the same as a period start time indicated by the first wakeup period information and at the same interval.

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, where the apparatus is applied to a first terminal, and 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 the apparatus 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, the first timing wakeup information element is used to set a time period for requesting a first terminal and the access point to transmit data, the second timing wakeup information element is used to set a time period for requesting the first terminal and a second terminal to transmit data, and the second timing wakeup information element includes an indication for a direct data transmission service between terminals;

a receiving module, configured to receive one or more response messages sent by the access point and responding to the one or more request messages, where the one or more response messages include at least one third timed wakeup information element and at least one fourth timed wakeup information element, the third timed wakeup information element includes first wakeup period information, and the fourth timed 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 during which the first terminal and the access point transmit data, and the second wakeup period information is used to indicate a period during which the first terminal and the second terminal transmit data;

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

and the second data module is used for transmitting data with the second terminal on a second link according to the time interval indicated by the second awakening time interval 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 dormancy information elements broadcasted by the access point, where the second dormancy information elements are used to indicate a dormancy period in which data is not sent on the second link, and a start time of the period indicated by the second dormancy information elements is the same as a start time of the period indicated by the second wakeup period information and has the same interval.

In one embodiment, the first and third timed wakeup itoms further include an indication for low latency traffic, and the apparatus further includes:

a first broadcast receiving module, configured to receive one or more first dormancy information elements broadcasted by the access point on a first link, where the first dormancy information element is used to indicate a dormancy period during which data is not transmitted on the first link, and a period start time indicated by the first dormancy information element is the same as a period start time indicated by the first awake period information and an interval is the same.

In a sixth aspect, the present application provides an apparatus for reducing delay in wireless transmission, which is 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 the first link, and the apparatus includes:

a receiving module, configured to receive one or more first messages sent by the access point, where the one or more first messages include at least one fourth timing wakeup information element, and the fourth timing wakeup information element includes an indication for direct data transmission service between terminals and second wakeup period information, where the second wakeup period information is used to indicate a period during which the first terminal and the second terminal transmit data;

and the data module is used for transmitting data with the second terminal on a second link according to the time interval indicated by the second awakening time interval information.

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

a first broadcast receiving module, configured to receive one or more first dormancy information elements broadcasted by the access point on a first link, where the first dormancy information element is used to indicate a dormancy period during which data is not transmitted on the first link, and a period start time indicated by the first dormancy information element is the same as a period start time indicated by the first awake period information and is at the same interval;

and a second broadcast receiving module, configured to receive, on a second link, one or more second dormancy information elements broadcasted by the access point, where the second dormancy information elements are used to indicate a dormancy period in which data is not sent on the second link, and a period start time indicated by the second dormancy information elements is the same as a period start time indicated by the second wakeup period information and has the same interval.

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 through a direct link on a second link, the access point is configured to perform the method of the first aspect, the first terminal is configured to perform the method of the second aspect, and the second terminal is configured to perform the method of 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, wherein the processor, when executing the computer program, causes the electronic device to perform the method of any 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 described above.

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

It should be noted that the apparatus in the fourth aspect is configured to implement the method in the first aspect, the apparatus in the fifth aspect is configured to implement the method in the second aspect, the apparatus in the sixth aspect is configured to implement the method in the third aspect, the electronic device in the eighth aspect, the storage medium in the ninth aspect, and the computer program product in the tenth aspect are configured to perform the method in any of the first to third aspects, and therefore, the same beneficial effects as those of the method in the first aspect, the second aspect, or the third aspect may be achieved, and no description is repeated in this embodiment.

According to the method and the device, cooperative control is carried out on the access point and the terminal and data transmission between the terminal and the terminal, so that transmission delay is reduced, the requirements of low-delay services are met, such as an online movie playing service, an online game and a wireless screen projection service, and 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 in wireless transmission according to an embodiment of the present application;

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

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

Detailed Description

In order to make those skilled in the art 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 a part of the embodiments of the present application, and not all embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application. While the disclosure herein has been presented in terms of exemplary embodiments or examples, it is to be understood that each aspect of the disclosure can be utilized independently and separately from other aspects of the disclosure to provide a complete disclosure. The embodiments described below and the features of the embodiments can 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. For the convenience of clearly describing the technical solutions of the embodiments of the present application, in the embodiments of the present application, the terms "first" and "second" are used to distinguish the same items or similar items with substantially the same functions and actions, and those skilled in the art can understand that the terms "first" and "second" are not limited to the quantity and the execution order, and are only used for illustrating and distinguishing the description objects, and do not divide the order, and do not represent the specific limitation on the number of devices in the embodiments of the present application, and cannot constitute any limitation on the embodiments of the present application.

In a multi-link scenario, generally, one physical device may include multiple logical devices, each of which may independently perform data transmission and reception, and each of which operates on one link. However, due to different physical device performances, some physical devices may have multiple logical devices simultaneously and perform data transmission and reception without affecting each other, that is, each link is not affected by other links, such devices are called STR devices, that is, devices capable of transmitting and receiving data simultaneously, while some physical devices have multiple logical devices capable of transmitting data simultaneously only or receiving data simultaneously only, and cannot transmit data through one link and other links receive data, such devices are called NSTR devices, that is, devices incapable of transmitting and receiving data simultaneously.

Furthermore, a single-link device has only one logical device and only one MAC address, whereas a multi-link device has one MAC address, each logical device belonging to the multi-link device has one MAC address, for example, if a multi-link device runs with three logical devices, then there are four MAC addresses on this physical device, one for the multi-link device and three for each logical device.

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 it is assumed in the embodiment of the present application 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 logical devices STA1 and STA2, the second terminal STA MLD2 includes two logical devices STA3 and STA4, and the access point AP MLD includes two logical devices AP1 and AP 2. The STA MLD1 establishes connection with the AP MLD, wherein the STA1 is connected with the AP1 on a link1, and the STA2 is connected with the AP2 on a link 2; the STA MLD2 establishes a connection with the AP MLD, where the STA3 connects with the AP1 over the link1 and the STA4 connects with the AP2 over the link2, as shown in fig. 1. In one 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 an architectural schematic diagram of a communication system, the number of terminals and the number of access points in the communication system are not limited in the embodiment of the present application, the terminals and the access points may also include more logic devices, and the number of logic devices in each terminal and access point may be different. Those skilled in the art will understand that the term "access point" (AP) according to the present application may also be used to describe an access port or any other device capable of receiving and transmitting wireless signals within a network architecture in accordance with the principles and functions described herein, and thus, the use of a wireless access point is merely exemplary.

With continued reference to fig. 1, the STA MLD1 may establish wireless transmissions, such as wireless screen shots, with the STA MLD 2. The embodiment of the present application will be described in detail by taking a wireless screen projection as an example. Specifically, the STA MLD1 downloads data such as an online movie through the AP MLD; the STA MLD1 discovers the STA MLD2 through an application layer, and the discovery of the application layer can be in application modes such as DLNA, miracast, chromecast, airplay and the like; the STA MLD1 selects to project a screen to the STA MLD2 through an operation interface, and the STA MLD1 can obtain the address of the STA MLD 2; a direct connection link is established between STA2 of STA MLD1 and STA4 of STA MLD2 on link2, and in the process of establishing the direct connection link, the AP MLD can store the direct connection relation between STA MLD1 and STA MLD 2; after the direct link is established, the STA MLD1 downloads data sent by the AP MLD on the link1, and sends screen projection data to the STA MLD2 on the link2, as shown in fig. 2. It should be noted that the STA MLD2 in the embodiment of the present application may be a single-link device, that is, when performing wireless transmission with the STA MLD1, the STA MLD2 may only connect with the STA MLD1 on the link2, but not connect with the AP MLD.

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

101. the STA MLD1 sends a request message including a timed wakeup information element (e.g., twt (target wake time) element) to the AP MLD, where the request message may include one or more timed 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 timed wakeup information element, TWT element1, and the other request message includes a second timed wakeup information element, TWT element2, where the TWT element1 is configured to set a period for requesting the STA MLD1 to transmit data with the AP MLD, the TWT element2 is configured to set a period for requesting the STA MLD1 to transmit data with the STA MLD2, and the TWT element2 includes an indication for a direct data transmission service between terminals, and optionally, the TWT element1 may further include an indication for a low latency service.

Optionally, the request message including the TWT element1 may include multiple TWT elements 1, which are used to request a period during which multiple STAs MLD1 and the AP MLD transmit data, and the multiple TWT elements 1 may also send to the AP MLD through multiple request messages; the request message including the TWT element2 may include multiple TWT elements 2 for requesting the data transmission periods of the STAs MLD1 and MLD2, and the multiple TWT elements 2 may also be sent to the AP MLD via multiple request messages.

In some embodiments, the STA MLD1 may send a request message to the AP MLD, the request message including the TWT element1 and the TWT element 2. Optionally, the request message may also include multiple TWT elements 1 and multiple TWT elements 2, which are used to request a period during which multiple STAs MLD1 and AP MLD transmit data and a period during which multiple STAs MLD1 and STA MLD2 transmit data, and the multiple TWT elements 1 and multiple TWT elements 2 may also send multiple request messages to the AP MLD.

Exemplarily, the TWT element1 contains the following parameters:

TWT request: for indicating the type of the message, for example, setting to 1 indicates that the message containing the timed wakeup information element is a timed wakeup 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 and is expressed as a 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 for indicating the traffic type, e.g., set to a specific value X, indicating use for low latency traffic, where X may be an integer greater than or equal to 0. Optionally, the parameter Traffic ID may also be replaced with a parameter Low latency Traffic indicating whether to use for Low latency Traffic, such as setting the parameter to 1 indicates to use for Low latency Traffic and setting the parameter to 0 indicates to use for other Traffic.

Exemplarily, the TWT element2 contains the following parameters:

TWT request: for indicating the type of the message, for example, setting to 1 indicates that the message containing the timed wakeup information element is a timed wakeup request message; setting to 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 and is expressed as a request message.

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: and is used for indicating the service type, such as setting to a specific value Y, which indicates that the service is used for direct data transmission between terminals, wherein Y may be an integer greater than or equal to 0, and the values of X and Y are different. Optionally, the parameter Traffic ID may also be replaced with a parameter STA direct Traffic indicating whether the parameter is used for the inter-terminal direct data transmission service, where if the parameter is set to 1, it indicates that the parameter is used for the inter-terminal direct data transmission service, and if the parameter is set to 0, it indicates that the parameter is used for other services.

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

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

In some embodiments, the AP MLD may send two response messages to the STA MLD1, respectively, where one response message includes a third timed wakeup information element, TWT element3, and the other response message includes a fourth timed wakeup information element, TWT element4, where the TWT element3 is configured to set a period during which the STA MLD1 and the AP MLD transmit data, the TWT element4 is configured to set a period during which the STA MLD1 and the STA MLD2 transmit data, the TWT element3 includes first wakeup period information, and the TWT element4 includes an indication for direct data transmission service between terminals and second wakeup period information, where the first wakeup period information is configured to indicate a period during which the first terminal and the access point transmit data, and the second wakeup period information is configured to indicate a period during which the first terminal and the second terminal transmit data. Optionally, the TWT element3 may also contain an indication for low latency traffic.

Optionally, the response message including the TWT element3 may include multiple TWT elements 3, which are used to set a period for multiple STAs MLD1 and AP MLD to transmit data, and the multiple TWT elements 3 may also send the STA MLD1 through multiple response messages; the response message including the TWT element4 may include multiple TWT elements 4 for setting the time periods for the multiple STAs MLD1 and MLD2 to transmit data, and the multiple TWT elements 4 may also be sent to the STA MLD1 through multiple response messages.

In some embodiments, the AP MLD may send a response message to the STA MLD1, where the response message includes the TWT element3 and the TWT element 4. Optionally, the response message may also include multiple TWT elements 3 and multiple TWT elements 4, which are used to set a period during which the multiple STAs MLD1 and the AP MLD transmit data and a period during which the multiple STAs MLD1 and the STA MLD2 transmit data, and the multiple TWT elements 3 and the multiple TWT elements 4 may also be sent to the STA MLD1 through multiple response messages.

Exemplarily, the TWT element3 contains the following parameters:

TWT request: for indicating the type of the message, for example, setting to 1 indicates that the message containing the timed wakeup information element is a timed wakeup request message; setting to 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, which is denoted as a response message.

TWT flow ID: for identifying the responded request, 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 length of the wake-up.

TWT wake interval: the interval of waking up.

Exemplarily, the TWT element4 contains the following parameters:

TWT request: for indicating the type of the message, for example, setting to 1 indicates that the message containing the timed wakeup information element is a timed wakeup 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, which is denoted as a response message.

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

TWT wake time: wake-up start time.

TWT wake duration: the length of the wake-up.

TWT wake interval: the interval of waking up.

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

It should be understood that both STA MLD1 and STA MLD2 in the embodiments of the present application may be STR devices or NSTR devices, when STA MLD1 is an STR device, the data transmission period between STA MLD1 and AP MLD and the data transmission period between STA MLD1 and STA MLD2 may or may not overlap, and when STA MLD1 is an NSTR device, the data transmission period between STA MLD1 and AP MLD and the data transmission period between STA MLD1 and STA MLD2 may not overlap. If STA MLD2 is connected to STA MLD1 over multiple links, when both STA MLD1 and STA MLD2 are STR devices, the periods of data transmission over these multiple links may be different for STA MLD1 and STA MLD2, otherwise, the periods of data transmission over these multiple links are the same for STA MLD1 and STA MLD 2.

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

1) the TWT wake time indicates a different start time;

2) the period 1 and the period 2 determined by the start time indicated by the TWT wake time and the duration indicated by the TWT wake duration do not overlap, and the time gap TG between the two periods is not less than one SIFS (short interframe space time) or PIFS (coordinated 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 wakeup intervals of the time interval 1 and the time interval 2 may be set to the same value, or values that are in a multiple relationship with each other, so as to ensure that the wakeup durations of each time of the time interval 1 and the time interval 2 do not overlap under the interval setting;

4) the sum of the TWT wake duration in period 1, the TWT wake duration in period 2, and the time gap TG between the two periods should be less than or equal to the TWT wake interval (when the TWT wake intervals of the two periods are equal, if not, take the maximum value of the two).

103. The STA MLD1 receives a response message which is sent by the AP MLD and contains a timing wakeup information element, wherein the response message contains the TWT element3 and the TWT element 4.

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

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

106. The STA MLD2 receives data sent by the STA MLD1 on the link2, specifically, the logical 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 timed wakeup information element to the STA MLD2, where the first message includes the TWT element4, and after receiving the first message including the TWT element4, the STA MLD2 may receive data sent by the STA MLD1 on the link2 according to the time period indicated in the TWT element 4.

In some embodiments, the AP MLD may further broadcast a sleep information element (e.g., a set element), where the timed wakeup information element indicates that a terminal corresponding to a direct data transmission service between terminals does not need to consider the sleep information element in a period indicated by the timed wakeup information element, or the terminal receiving the timed wakeup information element indicates that the terminal used for a low delay service does not consider the sleep information element in the period indicated by the timed wakeup information element, otherwise, no data is sent in the period indicated by the sleep information element. The method for reducing delay in wireless transmission further comprises the following steps:

107. the AP2 belonging to the AP MLD broadcasts on the link2 a sleep period including one or more second sleep information elements 2, the sleep element2 is used to indicate a sleep period in which no data is transmitted on the link2, and the sleep period start time set in the sleep element2 is the same as the wake period start time defined in the TWT element4 and the interval is the same.

108. The terminal connected to the AP MLD on link2 receives the broadcast message, and the terminals other than STA MLD1 and STA MLD2 do not transmit data on link2 according to the period indicated by the task element 1.

109. If the TWT elements 1 and 3 also include an indication for low latency traffic, the AP1 belonging to the AP MLD may broadcast a sleep period on the link1 that includes one or more first sleep information elements 1, a sleep element1 for indicating a sleep period during which no data is sent on the link1, and the sleep period start time set in the sleep element1 is the same as the wake period start time defined in the TWT element3 and the interval is the same.

110. Terminals connected to the AP MLD on link1 receive the broadcast message, and terminals other than STA MLD1 do not transmit data on link1 for the time period indicated by the task element 1.

In some embodiments, an indication of which links the wake period is for may also be included in each of TWT element1, TWT element2, TWT element3, and TWT element4, and the links indicated in TWT element1 and TWT element3 are the same, and the links indicated in TWT element2 and TWT element4 are the same. Specifically, the TWT element1 and TWT element3 further include a parameter Link info for indicating which links the wake-up period is used for, and the Link1 is provided in the embodiment of the present application; the TWT element2 and TWT element4 further include a parameter Link info for indicating which links the wake-up period is used for, and the Link2 is provided in this embodiment of the present application. Thus, the STA MLD1 can indicate whether the requested wake-up period is used for Link1 or Link2 respectively through the setting of Link info, and meanwhile, the AP MLD can also allocate the wake-up periods on Link1 and Link2 according to the indication of the STA MLD 1.

In some embodiments, the duration of the wake and the interval of the wake are also included in both TWT element1 and TWT element 2. Exemplarily, the TWT element1 may also contain the following parameters:

TWT wake duration: the length of time of wake-up;

TWT wake interval: the interval of waking up.

Wherein, the values of TWT wake duration and TWT wake interval can be determined according to the service, and are described by taking the following example of downloading an online movie and projecting a screen:

the STA MLD1 acquires the data format of the online movie, wherein the acquired resolution is H multiplied by V, wherein H is the horizontal pixel of the movie, V is the vertical pixel of the movie, and the frame rate is 60 Hz; then it can be set as:

TWT wake interval＝1/60＝16.67ms；

TWT wake duration (H × V × 8)/SR _ link1, where SR _ link1 represents the transmission rate supported by the AP MLD on link 1.

Also, the TWT element2 may also contain the following parameters:

TWT wake duration: the length of time of wake-up;

TWT wake interval: the interval of waking up.

Wherein, TWT wake interval is 1/60 ms 16.67 ms;

the TWT wake duration (H × V × 8)/SR _ link2+ transition _ delay, where SR _ link2 denotes a transmission rate supported on link2 determined when the STA MLD1 and the STA MLD2 establish a direct link, and transition _ delay denotes an input/output delay and a data codec processing delay at the device port.

It should be understood that when the STA MLD1 and the STA MLD2 are transmitting data, the STA MLD1 may not need to download data from the AP MLD, and in this case, the STA MLD1 may send a request message to the AP MLD, where the request message may only include the TWT element 2. Optionally, the request message may also include a plurality of TWT elements 2, which are used to request a period during which the plurality of STAs MLD1 and the STA MLD2 transmit data, 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 element 4.

An embodiment of the present application further provides an apparatus for reducing delay in wireless transmission, including:

Optionally, the method further comprises:

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

Optionally, the sending module is further configured to:

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

Optionally, the apparatus further comprises:

The embodiment of the present application further provides a device for reducing latency in wireless transmission, which is 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 the first link, including:

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

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

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

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

It should be understood that, in the embodiments of the present application, the processor may be a Central Processing Unit (CPU), and the processor may also be other general 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, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

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

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

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

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

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

The above description is only for the 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 conceive of the changes or substitutions within the technical scope of the present application, and shall 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:

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 wakeup information element and at least one fourth timing wakeup information element, the third timing wakeup information element comprises first wakeup period information, and the fourth timing wakeup information element comprises an indication for direct data transmission service between the terminals and second wakeup period information, wherein the first wakeup period information is used for indicating a period of data transmission between the first terminal and the access point, and the second wakeup period information is used for indicating a period of data transmission between the first terminal and the second terminal.

2. The method of claim 1, further comprising:

broadcasting one or more second dormancy information elements on the second link, wherein the second dormancy information elements are used for indicating dormancy periods in which data is not transmitted on the second link, and the period start time indicated by the second dormancy information elements is the same as the period start time indicated by the second wakeup period information and the interval is the same.

3. The method of claim 1, wherein the first and third timed wakeup itoms further include an indication for low latency traffic, the method further comprising:

4. The method of claim 1, further comprising:

5. The method of claim 1, wherein the first wake-up period information indicates a period of time that does not overlap with the period of time indicated by the second wake-up period information.

6. The method of claim 1, wherein the first, second, third and fourth timed wake-up ie further comprise at least one of a request identifier and an indication of which link the wake-up period is for, and the request identifiers in the first and third timed wake-up ies are the same or the indicated links are the same, and the request identifiers in the second and fourth timed wake-up ies are the same or the indicated links are the same.

7. The method of claim 1, wherein the first timing wakeup itom and the second timing wakeup itom each further comprise a wakeup duration and a wakeup interval.

8. A method for reducing delay in wireless transmission 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 method comprises the following steps:

9. The method of claim 8, further comprising:

10. The method of claim 8, wherein the first and third timed wakeup itoms further include an indication for low latency traffic, the method further comprising:

11. The method of claim 8, wherein the first wake-up period information indicates a period of time that does not overlap with the period of time indicated by the second wake-up period information.

12. The method of claim 8, wherein the first, second, third and fourth timed wake-up ie further comprise at least one of a request identifier and an indication of which link the wake-up period is for, and the request identifier in the first and third timed wake-up ies is the same or the indicated link is the same, and the request identifier in the second and fourth timed wake-up ies is the same or the indicated link is the same.

13. The method of claim 8, wherein the first timed wakeup itom and the second timed wakeup itom each further comprise a wakeup duration and a wakeup interval.

14. A method for reducing delay in wireless transmission is applied to a second terminal, the second terminal is connected with a first terminal through a direct link on a second link, the first terminal is also connected with an access point on a first link, and the method is characterized by comprising the following steps:

15. The method of claim 14, further comprising at least one of:

16. The method of claim 14, wherein the fourth timed wake-up ie further comprises at least one of a request identification and an indication of which links the wake-up period is for.

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

18. The apparatus of claim 17, further comprising:

19. The apparatus of claim 17, wherein the first and third timed wake-up ie further comprise an indication for low latency traffic, the apparatus further comprising:

20. The apparatus for reducing latency in a wireless transmission of claim 17, wherein the sending module is further configured to:

21. A device for reducing delay in wireless transmission is applied to a first terminal, 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 is characterized by comprising:

a receiving module, configured to receive one or more response messages sent by the access point and responding to the one or more request messages, 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 direct data transmission service between terminals and second wakeup period information, where the first wakeup period information is used to indicate a period when the first terminal and the access point transmit data, and the second wakeup period information is used to indicate a period when the first terminal and the second terminal transmit data;

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

22. The apparatus of claim 21, wherein the apparatus further comprises:

23. The apparatus of claim 21, wherein the first and third timed wakeup itoms further comprise an indication for low latency traffic, the apparatus further comprising:

24. A device for reducing delay in wireless transmission is applied to a second terminal, the second terminal is connected with a first terminal through a direct link on a second link, the first terminal is also connected with an access point on a first link, and the device is characterized by comprising:

25. An apparatus for reducing latency in a wireless transmission according to claim 24, further comprising at least one of:

26. A communication system comprising a first terminal, a second terminal and an access point, wherein the first terminal is connected to the access point on a first link and to the second terminal on a second link via a direct link, wherein the access point is configured to perform the method of any of claims 1 to 7, wherein the first terminal is configured to perform the method of any of claims 8 to 13, and wherein the second terminal is configured to perform the method of any of claims 14 to 16.

27. An electronic device comprising a memory, a processor, and a computer program stored on the memory, wherein execution of the computer program by the processor causes the electronic device to perform the method of any of claims 1-16.

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