WO2025241197A1 - Coordinated transmission methods, communication devices, access point devices and communication system - Google Patents

Abstract

The embodiments of the present disclosure relate to coordinated transmission methods, communication devices, access point devices and a communication system. A coordinated transmission method is applied to a first device, and comprises: under a first link, receiving a first radio frame, wherein the first radio frame identifies a restricted target wake time service period (rTWT SP), the rTWT SP comprises a first rTWT SP of a first basic service set (BSS) where the first device is located, and/or a second rTWT SP of a second BSS, and the second BSS and the first BSS are located in a same overlapping basic service set (OBSS); and, before start of the rTWT SP, or before start of the second rTWT SP, terminating a transmission operation of the first device on the first link, so as to avoid causing OBSS interference to low-latency services transmitted within the second rTWT SP. Thus, the present disclosure implements coordinated transmission in multi-AP coordination scenarios.

Description

Coordinate transmission methods, communication equipment, access point equipment, and communication systems Technical Field

This disclosure relates to the field of communication technology, and in particular to a coordinated transmission method, communication equipment, access point equipment, and communication system.

Background Technology

Currently, research on Wi-Fi technology focuses on areas such as Ultra High Reliability (UHR), with the vision of improving the reliability of Wireless Local Area Networks (WLAN) connections, reducing latency, improving manageability, increasing throughput at different signal-to-noise ratio (SNR) levels, and reducing device-level power consumption.

In UHR, the restricted target wakeup time (rTWT) mechanism will be further enhanced, for example, by coordinating among multiple APs or AP MLDs to ensure the latency requirements of low-latency services.

Summary of the Invention

This disclosure provides a coordinated transmission method, communication device, access point device, and communication system to further enhance the rTWT mechanism.

On one hand, embodiments of this disclosure provide a coordinated transmission method applied to a first device, the method comprising:

A first wireless frame is determined; wherein the first wireless frame includes first identification information, the first identification information indicating that: the STA requests to wake up the access point device AP in a power-saving state to transmit uplink data;

The first wireless frame is sent to the second AP.

On the other hand, embodiments of this disclosure also provide a coordinated transmission method applied to an access point device (AP), the method comprising:

A first radio frame is determined, the first radio frame identifying the restricted target wake-up time service time rTWT SP; the rTWT SP includes: the first rTWT SP of the first basic service set (BSS) where the first device is located, and/or, the second rTWT SP of the second BSS; the second BSS and the first BSS are in the same overlapping basic service set (OBSS);

Under the first link, a first radio frame is sent to the first device, instructing the first device to terminate its transmission operation on the first link before the start of the rTWT SP or before the start of the second rTWT SP.

On the other hand, this disclosure also provides a communication device, which is a first device, the first device comprising:

A receiving module is configured to receive a first radio frame under a first link; the first radio frame identifies a Limiting Target Wake-up Time Service Time (rTWT SP); the rTWT SP includes: the first rTWT SP of the first Basic Service Set (BSS) where the first device is located, and/or the second rTWT SP of the second BSS; the second BSS and the first BSS are in the same Overlapping Basic Service Set (OBSS);

A coordination module is used to terminate the transmission operation of the first device on the first link before the start of the rTWT SP or before the start of the second rTWT SP.

On the other hand, embodiments of this disclosure also provide an access point device (AP), the AP comprising:

A determining module is used to determine a first radio frame, wherein the first radio frame identifies a restricted target wake-up time service time rTWT SP; the rTWT SP includes: the first rTWT SP of a first basic service set (BSS) where the first device is located, and/or the second rTWT SP of a second BSS; the second BSS and the first BSS are in the same overlapping basic service set (OBSS);

The transmitting module is configured to transmit a first radio frame to a first device under the first link, instructing the first device to terminate its transmission operation on the first link before the start of the rTWT SP or before the start of the second rTWT SP.

On the other hand, this disclosure also provides a communication device, which is a first device, comprising:

One or more processors;

The first device is used to execute the coordinated transmission method described in the embodiments of this disclosure.

On the other hand, embodiments of this disclosure also provide an access point device (AP), including:

One or more processors;

The access point device (AP) is used to execute the coordinated transmission method described in the embodiments of this disclosure.

This disclosure also provides a communication system, including a first device and an access point device (AP); wherein, the first device confirms... A first radio frame is defined, the first radio frame identifying the target wake-up time service time rTWT SP; the rTWT SP includes: the first rTWT SP of the first basic service set (BSS) where the first device is located, and/or, the second rTWT SP of the second BSS; the second BSS and the first BSS are in the same overlapping basic service set (OBSS);

Under the first link, a first radio frame is sent to the first device, instructing the first device to terminate its transmission operation on the first link before the start of the rTWT SP or before the start of the second rTWT SP.

This disclosure also provides a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform the coordinated transmission method as described in this disclosure.

In this embodiment of the disclosure, a first device receives a first radio frame on a first link; the first radio frame identifies a Limiting Target Wake-up Time Service Time (rTWT SP); the rTWT SP includes: a first rTWT SP of a first Basic Service Set (BSS) where the first device is located, and/or a second rTWT SP of a second BSS; the second BSS and the first BSS are in the same Overlapping Basic Service Set (OBSS); before the start of the rTWT SP, or before the start of the second rTWT SP, the transmission operation of the first device on the first link is terminated to avoid OBSS interference to low-latency services transmitted in the second rTWT SP, thereby achieving coordinated transmission in a multi-AP coordination scenario.

Additional aspects and advantages of embodiments of this disclosure will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of this disclosure.

Attached Figure Description

To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings required for the description of the embodiments are introduced below. The following drawings are only some embodiments of this disclosure and do not impose specific limitations on the protection scope of this disclosure.

Figure 1 is an exemplary schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure;

Figure 2a is one of the exemplary schematic diagrams of the method provided in the embodiments of this disclosure;

Figure 2b is a second exemplary schematic diagram of the method provided in the embodiments of this disclosure;

Figure 3 is one of the exemplary interactive diagrams of the method provided in the embodiments of this disclosure;

Figure 4 is a second exemplary interactive schematic diagram of the method provided in the embodiments of this disclosure;

Figure 5 is a third exemplary interactive schematic diagram of the method provided in the embodiments of this disclosure;

Figure 6 is a fourth exemplary interactive schematic diagram of the method provided in the embodiments of this disclosure;

Figure 7 is a flowchart illustrating one of the coordinated transmission methods provided in this embodiment of the present disclosure;

Figure 8 is a second schematic flowchart of the coordinated transmission method provided in this embodiment of the present disclosure;

Figure 9 is a schematic diagram of the structure of the first device proposed in an embodiment of this disclosure;

Figure 10 is a schematic diagram of the structure of the access point device (AP) proposed in the embodiment of this disclosure;

Figure 11 is a schematic diagram of the structure of the terminal proposed in the embodiment of this disclosure;

Figure 12 is a schematic diagram of the chip structure proposed in the embodiments of this disclosure.

Detailed Implementation

This disclosure presents a coordinated transmission method, communication equipment, access point equipment, and communication system.

In a first aspect, embodiments of this disclosure provide a coordinated transmission method applied to a first device, the method comprising:

Under the first link, a first radio frame is received; the first radio frame identifies the restricted target wake-up time service time rTWT SP; the rTWT SP includes: the first rTWT SP of the first basic service set (BSS) where the first device is located, and/or, the second rTWT SP of the second BSS; the second BSS and the first BSS are in the same overlapping basic service set (OBSS);

The transmission operation of the first device on the first link is terminated before the start of the first rTWT SP or before the start of the second rTWT SP.

In the above embodiments, OBSS interference is avoided for low-latency services transmitted within the second rTWT SP, thus achieving coordinated transmission in multi-AP coordination scenarios.

In conjunction with some embodiments of the first aspect, in some embodiments, the first device includes a station device (STA), which terminates the transmission operation of the first device on the first link before the rTWT SP begins;

or

The first device includes an access point device (AP), which terminates the transmission operation of the first device on the first link before the second rTWT SP begins.

In the above embodiments, for both STA and AP, the timing for ending the transmission operation of the first device on the first link is determined.

In conjunction with some embodiments of the first aspect, in some embodiments, the STA terminates the transmission operation of the first device on the first link before the rTWT SP begins, including:

The first device is the current transmission opportunity (TXOP) holder, or the first link belongs to a set of links whose operating modes include Enhanced Multi-Link Single Radio eMLSR, Enhanced Multi-Link Multi-Radio eMLMR, or Non-Simultaneous Transmit/Receive NSTR.

The STA terminates its transmission operation on the first link before the rTWT SP begins.

In the above embodiments, the transmission operation ending on the first link is determined according to the specific transmission scenario of the STA.

In conjunction with some embodiments of the first aspect, in some embodiments, the AP terminates the transmission operation of the first device on the first link before the second rTWT SP begins, including:

Before the second rTWT SP begins, the transmission operation of the first device on the first link ends; the first link belongs to a set of links whose working modes include eMLSR, eMLMR or NSTR, or the first link and the second link of the second rTWT are NSTR link pairs.

In the above embodiments, the transmission operation ending on the first link is determined according to the specific transmission scenario of the AP.

In conjunction with some embodiments of the first aspect, in some embodiments, the first radio frame includes first identification information that identifies the second rTWT SP;

The first device terminates its transmission operation on the first link before the second rTWT SP begins.

In the above embodiments, if the first radio frame identifies the second rTWT SP, it is determined that the transmission operation of the first device on the first link will be terminated.

In conjunction with some embodiments of the first aspect, in some embodiments, the first device terminates its transmission operation on the first link before the second rTWT SP begins, including:

The first device includes a STA, and the STA is the TXOP holder of the current TXOP. Before the second rTWT SP begins, the STA ends the transmission operation of the first device on the first link, and after the second rTWT SP ends, it competes to regain the TXOP through the Enhanced Distributed Channel Access (EDCA) mechanism.

Alternatively, if the first link belongs to a set of links whose operating modes include eMLSR, eMLMR, or NSTR, the STA terminates its transmission operation on the first link before the second rTWT SP begins.

In the above embodiments, the transmission operation ending on the first link is determined according to the specific transmission scenario of the STA.

In conjunction with some embodiments of the first aspect, in some embodiments, the first device terminates its transmission operation on the first link before the second rTWT SP begins, including:

The first device includes an AP, and the AP is the TXOP holder of the current TXOP. Before the second rTWT SP begins, the AP terminates the transmission operation of the first device on the first link, and after the second rTWT SP ends, it competes to regain the TXOP through the EDCA mechanism.

Alternatively, the AP may transmit or receive on the first link, and the AP may terminate its transmission operation on the first link before the second rTWT SP begins; the first link may belong to a set of links whose working modes include eMLSR, eMLMR, or NSTR, or the first link and the second link of the second rTWT may be an NSTR link pair.

In the above embodiments, the transmission operation ending on the first link is determined according to the specific transmission scenario of the AP.

Secondly, embodiments of this disclosure propose a coordinated transmission method applied to an access point device (AP), the method comprising:

A first radio frame is determined, the first radio frame identifying the restricted target wake-up time service time rTWT SP; the rTWT SP includes: the first rTWT SP of the first basic service set (BSS) where the first device is located, and/or, the second rTWT SP of the second BSS; the second BSS and the first BSS are in the same overlapping basic service set (OBSS);

Under the first link, a first radio frame is sent to the first device, instructing the first device to terminate its transmission operation on the first link before the start of the rTWT SP or before the start of the second rTWT SP.

Thirdly, this disclosure also provides a communication device, which is a first device, including at least one of a receiving module and a coordination module; wherein the first device is used to execute an optional implementation of the first aspect.

Fourthly, embodiments of this disclosure also provide an access point device (AP), which includes at least one of a determining module and a sending module; wherein the access point device (AP) is used to execute an optional implementation of the second aspect.

Fifthly, embodiments of this disclosure also provide a communication device, which is a first device, comprising:

One or more processors;

The first device is used to execute an optional implementation of the first aspect.

Sixthly, embodiments of this disclosure also provide an access point device (AP), comprising:

One or more processors;

The access point device (AP) is used to implement the optional implementation of the second aspect.

In a seventh aspect, embodiments of this disclosure also provide a communication system, including a first device and an access point device (AP); wherein the first device is configured to perform the optional implementation described in the first aspect, and the access point device (AP) is configured to perform the optional implementation described in the second aspect.

Eighthly, embodiments of this disclosure also provide a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform the optional implementations described in the first and second aspects.

Ninthly, embodiments of this disclosure provide a program product that, when executed by a communication device, causes the communication device to perform the method as described in the optional implementations of the first and second aspects.

In a tenth aspect, embodiments of this disclosure provide a computer program that, when run on a computer, causes the computer to perform the methods described in the optional implementations of the first and second aspects.

Eleventhly, embodiments of this disclosure provide a chip or chip system. The chip or chip system includes processing circuitry configured to perform the methods described according to optional implementations of the first and second aspects above.

Understandably, the aforementioned first device, access point device (AP), communication system, storage medium, program product, computer program, chip, or chip system are all used to execute the methods proposed in the embodiments of this disclosure. Therefore, the beneficial effects that can be achieved can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

This disclosure provides a coordinated transmission method, a communication device, an access point device, and a communication system. In some embodiments, the terms "coordinated transmission method" and "signal transmission method," "wireless frame transmission method," etc., can be used interchangeably, as can the terms "information processing system," "communication system," etc.

This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

In each of the disclosed embodiments, unless otherwise specified or in case of logical conflict, the terminology and/or descriptions of the embodiments are consistent and can be referenced by each other. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.

In the embodiments disclosed herein, "multiple" refers to two or more.

In some embodiments, the terms “at least one of”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.

In some embodiments, the notation "at least one of A and B", "A and/or B", "A in one case, B in another", "in response to one case A, in response to another case B", etc., may include the following technical solutions depending on the situation: in some embodiments, A (execute A regardless of B); in some embodiments, B (execute B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, A and B (both A and B are executed). The same applies when there are more branches such as A, B, C, etc.

In some embodiments, the notation "A or B" may include the following technical solutions, depending on the situation: in some embodiments, A (execution of A regardless of B); in some embodiments, B (execution of B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The same applies when there are more branches such as A, B, C, etc.

The prefixes "first,""second," etc., used in the embodiments of this disclosure are merely for distinguishing different descriptive objects and do not impose restrictions on the position, order, priority, quantity, or content of the descriptive objects. The description of the descriptive objects should be found in the claims or the context of the embodiments, and the use of prefixes should not constitute unnecessary restrictions. For example, if the descriptive object is a "field," then the ordinal numbers preceding "field" in "first field" and "second field" do not restrict the position or order of the "fields," and "first" and "second" do not restrict the "words" they modify. Whether the "segments" are in the same message or not, the order of the "first field" and the "second field" is not restricted. For example, if the described object is "level," the ordinal number preceding "level" in "first level" and "second level" does not restrict the priority between "levels." Furthermore, the number of described objects is not limited by ordinal numbers; there can be one or more. For instance, in "first device," the number of "devices" can be one or more. In addition, objects modified by different prefixes can be the same or different. For example, if the described object is "device," then "first device" and "second device" can be the same device or different devices, and their types can be the same or different. Similarly, if the described object is "information," then "first information" and "second information" can be the same information or different information, and their content can be the same or different.

In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

In some embodiments, the terms “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “if…”, “if…”, etc., can be used interchangeably.

In some embodiments, the terms “greater than,” “greater than or equal to,” “not less than,” “more than,” “more than or equal to,” “not less than,” “higher than,” “higher than or equal to,” “not lower than,” and “above” can be used interchangeably, as can the terms “less than,” “less than or equal to,” “not greater than,” “less than,” “less than or equal to,” “not more than,” “lower than,” “lower than or equal to,” “not higher than,” and “below”.

In some embodiments, the apparatus and device may be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they may also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "body", etc.

In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.

In some embodiments, data, information, etc., may be obtained with the user's consent.

Furthermore, each element, each row, or each column in the table of this disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

Figure 1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.

As shown in Figure 1, the communication system 100 includes a first device and an access point (AP) 102. The first device may be a station (STA) 101 or an access point (AP) 102.

In some embodiments, site device 101 includes, for example, a wireless communication chip, a wireless sensor, or a wireless communication terminal that supports WiFi communication. Optionally, the wireless communication terminal may be at least one of, but is not limited to, a mobile phone, a wearable device, an IoT device that supports WiFi communication, a car with WiFi communication capabilities, a smart car, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home.

Specifically, site device 101 can be a terminal device or network device with a Wi-Fi chip. Optionally, site device 101 can support multiple WLAN standards such as 802.11ax, 802.11be, 802.11ac, 802.11n, 802.11g, 802.11b, 802.11a, 802.11bf, and 802.11bn, as well as the next-generation 802.11 protocol, but is not limited to these.

In some embodiments, the access point device 102 can be an access point for mobile terminals to access a wired network. An AP acts as a bridge connecting wired and wireless networks, its main function being to connect various wireless network clients together and then connect the wireless network to an Ethernet network. Specifically, an AP can be a terminal device or network device with a wireless fidelity chip. Optionally, the AP can support various WLAN standards such as 802.11ax, 802.11be, 802.11ac, 802.11n, 802.11g, 802.11b, 802.11a, 802.11bf, and 802.11bn, as well as the next-generation 802.11 protocol, but is not limited to these.

Optionally, in this embodiment of the disclosure, AP and STA can be devices that support multiple connections. For example, they can be represented as Access Point Multi-Link Device (AP MLD) and Non-Access Point Multi-Link Device (Non-AP MLD), respectively. AP MLD can represent an access point that supports multiple connection communication functions, and non-AP MLD can represent a site that supports multiple connection communication functions.

It is understood that the communication system described in this disclosure is for the purpose of more clearly illustrating the technical solutions of this disclosure, and does not constitute a limitation on the technical solutions proposed in this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions proposed in this disclosure are also applicable to similar technical problems.

The following embodiments of this disclosure can be applied to the communication system 100 shown in FIG1, or to some of the main entities, but are not limited thereto. The entities shown in FIG1 are illustrative; the communication system may include all or some of the entities in FIG1, or it may include other entities besides those in FIG1. The number and form of each entity are arbitrary; each entity can be physical or virtual. The connection relationships between the entities are illustrative; the entities may be unconnected or connected, and the connection can be in any manner, including direct or indirect connections. It can be a wired connection or a wireless connection.

The embodiments disclosed herein can be applied to Wireless Local Area Networks (WLANs), such as LANs using the 802.11 series of protocols. In a WLAN, a Basic Service Set (BSS) is a fundamental component. An BSS network consists of site devices with some association within a specific coverage area. One type of association is where sites communicate directly with each other in a self-organizing network; this is called an Independent Basic Service Set (IBSS). Another more common scenario is that in a BSS network, there is only one central site dedicated to managing the BSS, called the Access Point device, and all other STAs in the network are associated with it. Other sites in the BSS network that are not the central site are called terminals, also known as non-AP STAs; terminals and non-AP STAs are collectively referred to as STAs. When describing STAs, it is not necessary to distinguish between APs and non-AP STAs. Within the same BSS network, due to distance, transmission power, etc., a STA cannot detect other STAs that are far away; they are each other's hidden nodes.

Figure 2a is one of the exemplary schematic diagrams shown according to an embodiment of the present disclosure. As shown in Figure 2a, the above method includes:

Step 201: The first device receives a first radio frame under the first link; the first radio frame identifies the restricted target wake-up time service time rTWT SP; the rTWT SP includes: the first rTWT SP of the first basic service set (BSS) where the first device is located, and/or the second rTWT SP of the second BSS; the second BSS and the first BSS are in the same overlapping basic service set (OBSS).

In Wireless Local Area Networks (WLANs), Target Wake Time (TWT) is an energy-saving technology designed to further reduce Wi-Fi network power consumption. Specifically, TWT technology enables STAs (Stations) and Access Points (APs) to negotiate a Service Period (SP) to determine the STA's sleep and wake-up times and frequencies. STAs remain active and communicate during this service period, allowing them to sleep outside of it, thus saving energy. Furthermore, TWT technology enables APs to provide higher-quality service to multiple STAs, minimizing contention and overlap, thereby improving spectral efficiency while reducing Wi-Fi network power consumption.

In low-latency transmission scenarios, many applications have stringent latency requirements for their real-time data traffic. For example, average or maximum latency may be on the order of milliseconds to tens of milliseconds, and these applications require extremely low jitter and high reliability in their real-time data traffic. To further ensure communication for low-latency services, a restricted-target wake-up time (rTWT) mechanism has been proposed, building upon traditional TWT technology. rTWT is a form of broadcast TWT. The rTWT mechanism allows access points (APs) to use enhanced media access protection and resource reservation mechanisms to provide more predictable latency, distinguishing latency-sensitive traffic from other types of traffic. This allows APs to reduce worst-case latency and/or jitter, providing more reliable services.

Optionally, R-TWT is used to serve low-latency services, such as services with an average latency of less than 10 milliseconds. Within the rTWT SP, only services identified as low-latency services communicate, while other communication services are suspended or postponed during this phase, thereby ensuring the transmission of low-latency services.

In a multi-AP operation or multi-AP coordination scenario, multiple basic service sets (OBSSs) may have rTWTs. In this embodiment, the AP (hereinafter referred to as AP1 for ease of explanation; in this embodiment, the first device may be a STA associated with AP1, or AP2 other than AP1) carries rTWT SP information in the first radio frame. The rTWT SP information includes the rTWT SP in the OBSS where AP1 is located. The rTWT SP in the OBSS where AP1 is located includes: the first rTWT SP of the first basic service set (OBSS) where the first device is located, and/or the second rTWT SP of the second BSS. The second BSS and the first BSS are in the same overlapping basic service set (OBSS).

The first wireless frame includes first identification information, which identifies the second rTWT SP; for example, the first identification information occupies one bit, which is set to "1" to identify the rTWT SP as the second rTWT SP; or, the first identification information is set to the identifier of AP1, such as the link ID or BSSID of AP1.

Among them, the first rTWT SP is the rTWT SP of the BSS where the first device is located; taking the first device as AP2 as an example, the first rTWT SP is the SP of the rTWT it establishes; taking the first device as the STA associated with AP2 as an example, the first rTWT SP is the SP of the rTWT established by AP1.

The second rTWT SP is the rTWT SP of other devices in the OBSS where the first device is located; taking the first device as AP2 as an example, the first rTWT SP is the SP of the rTWT established by other APs; taking the first device as the STA associated with AP2 as an example, the first restricted target wakeup time service period (rTWT SP) is the SP of the rTWT established by other APs.

In other words, the rTWT SP consists of two parts: the first part is the rTWT SP established by AP1; the second part is the rTWT SP established by other APs.

In this embodiment of the disclosure, the first wireless frame may be a beacon frame, a probe response frame, an association response, or a re-association response frame.

Steps 202 and 2002: Before the second rTWT SP begins, the transmission operation of the first device on the first link is terminated.

The first device may terminate its transmission operation on the first link before all rTWT SPs begin, or it may terminate its transmission operation on the first link before the second rTWT SP begins.

Specifically, in this embodiment of the disclosure, the STA can be an 802.11bn STA or a legacy STA; an 802.11bn STA is a STA that supports the 802.11bn series of transmission protocols and transmission protocols after the 802.11bn series; a legacy STA, for example, only supports transmission protocols before the 802.11bn series, such as STAs that support multiple transmission protocols such as 802.11ax, 802.11be, 802.11ac, 802.11n, 802.11g, 802.11b, 802.11a, and 802.11bf.

If an identifier bit is added to the first radio frame to identify the second rTWT SP, the 802.11bn STA can distinguish between the first and second rTWT SPs based on the identifier bit. The 802.11bn STA can then terminate its transmission operations on the first link before the second rTWT SP begins, thus avoiding OBSS interference to low-latency services transmitted within the second rTWT SP. For example, the STA could be a TXOP holder in a TXOP, or an EMLSR, EMLMR, or NSTR on the first link. It is understood that if the 802.11bn STA is not a member STA of the first rTWT, it also needs to terminate its transmission operations on the first link before the first rTWT SP begins to avoid affecting low-latency services transmitted within the first rTWT SP.

If an identifier bit is added to the first radio frame to identify the second rTWT SP, for the first device being AP2, the second rTWT SP belongs to the OBSS rTWT SP (under a certain link). When AP2 receives the second rTWT SP broadcast by AP1, AP2 can terminate its transmission operation on the first link before the second rTWT SP begins, thus avoiding OBSS interference to low-latency services transmitted within the second rTWT SP. For example, AP2 is a TXOP holder in a TXOP. Alternatively, the first link belongs to a set of links supported by the STA, including EMLSR, EMLMR, or NSTR.

It is understood that in this embodiment of the present disclosure, when the working mode of the first link includes EMLSR and EMLMR, the switching delay of EMLSR and EMLMR needs to be considered when determining the transmission operation time of the bundle on the first link. For example, if the start time of the rTWT SP is T1 and the switching delay is t2, then the first device needs to end the transmission at (T1-t2) (or before) to avoid the first device switching from the first link to the transmission link of EMLSR and EMLMR.

Accordingly, in this embodiment of the present disclosure, when the working mode of the first link includes NSTR, the medium recovery time needs to be considered when determining the transmission operation time of the bundle on the first link. For example, if the start time of the rTWT SP is T1 and the medium recovery time is t3, then the first device needs to end the transmission at (T1-t3) time (or before) to avoid the first device performing medium recovery after (T1-t3) time.

In this embodiment, a first device receives a first radio frame on a first link; the first radio frame identifies a Limiting Target Wake-up Time Service Time (rTWT SP); the rTWT SP includes: a first rTWT SP of a first Basic Service Set (BSS) where the first device is located, and/or a second rTWT SP of a second BSS; the second BSS and the first BSS are in the same Overlapping Basic Service Set (OBSS); before the second rTWT SP begins, the transmission operation of the first device on the first link ends. This avoids OBSS interference to low-latency services transmitted within the second rTWT SP for the bn device, achieving coordinated transmission in a multi-AP coordination scenario.

Figure 2b is a second exemplary schematic diagram illustrating an embodiment of the present disclosure. As shown in Figure 2b, the method includes:

Step 201: The first device receives a first radio frame under the first link; the first radio frame identifies the restricted target wake-up time service time rTWT SP; the rTWT SP includes: the first rTWT SP of the first basic service set (BSS) where the first device is located, and/or the second rTWT SP of the second BSS; the second BSS and the first BSS are in the same overlapping basic service set (OBSS).

In the first radio frame, no identifier bit is added to identify the second rTWT SP.

In this embodiment of the disclosure, the first device may be a STA associated with AP1, or AP2 other than AP1. The first radio frame carries rTWT SP information, which includes the rTWT SP in the OBSS where AP1 is located. The rTWT SP in the OBSS where AP1 is located includes: the first rTWT SP of the first basic service set BSS where the first device is located, and/or the second rTWT SP of the second BSS. The second BSS and the first BSS are in the same overlapping basic service set OBSS.

Among them, the first rTWT SP is the rTWT SP of the BSS where the first device is located; taking the first device as AP2 as an example, the first rTWT SP is the SP of the rTWT it establishes; taking the first device as the STA associated with AP2 as an example, the first rTWT SP is the SP of the rTWT established by AP1.

The second rTWT SP is the rTWT SP of other devices in the OBSS where the first device is located; taking the first device as AP2 as an example, the first rTWT SP is the SP of the rTWT established by other APs; taking the first device as the STA associated with AP2 as an example, the first restricted target wakeup time service period (rTWT SP) is the SP of the rTWT established by other APs.

In other words, the rTWT SP consists of two parts: the first part is the rTWT SP established by AP1; the second part is the rTWT SP established by other APs.

AP1 did not add a flag bit in the first radio frame to identify the second rTWT SP.

In this embodiment of the disclosure, the first wireless frame may be a beacon frame, a probe response frame, an association response, or a re-association response frame.

Steps 202 and 2002: Before the rTWT SP begins, the transmission operation of the first device on the first link is terminated.

The first device may terminate its transmission operation on the first link before all rTWT SPs begin, or it may terminate its transmission operation on the first link before the second rTWT SP begins.

Specifically, in this embodiment of the disclosure, the STA can be an 802.11bn STA or a legacy STA; an 802.11bn STA is a STA that supports the 802.11bn series of transmission protocols and transmission protocols after the 802.11bn series; a legacy STA, for example, only supports transmission protocols before the 802.11bn series, such as STAs that support multiple transmission protocols such as 802.11ax, 802.11be, 802.11ac, 802.11n, 802.11g, 802.11b, 802.11a, and 802.11bf.

If no identifier is added in the first radio frame to identify the second rTWT SP, the STA cannot distinguish between the first and second rTWT SPs. Therefore, the STA can terminate its transmission operation on the first link before all rTWT SPs begin. For example, if the STA is the TXOP holder in the current Transmission Opportunity (TXOP) and obtains the TXOP through enhanced distributed channel access (EDCA) contention. Alternatively, the first link belongs to a set of links whose operating modes include enhanced multi-link single radio (EMLSR), enhanced multi-link multi-radio (EMLMR), or non-simultaneous transmit and receive (NSTR). This avoids STA accessing the channel or transmitting on the first link, which could affect low-latency services transmitted within the first rTWT SP, and also avoids OBSS interference to low-latency services transmitted within the second rTWT SP.

If no identifier is added in the first radio frame to identify the second rTWT SP, and the first device is AP2, AP2 can terminate its transmission operation on the first link before the second rTWT SP begins, thus avoiding OBSS interference to low-latency services transmitted within the second rTWT SP, upon receiving the second rTWT SP broadcast by AP1. For example, AP2 could be the TXOP holder in a TXOP, or the EMLSR, EMLMR, or NSTR of the first link.

In this embodiment of the disclosure, a first device receives a first radio frame under a first link; the first radio frame identifies a Limiting Target Wake-up Time Service Time (rTWT SP); the rTWT SP includes: a first rTWT SP of a first Basic Service Set (BSS) where the first device is located, and/or a second rTWT SP of a second BSS; the second BSS and the first BSS are in the same Overlapping Basic Service Set (OBSS); before the rTWT SP begins, the transmission operation of the first device on the first link is terminated to avoid OBSS interference to low-latency services transmitted in the second rTWT SP, thereby realizing coordinated transmission in a multi-AP coordination scenario.

Referring to Figure 3, taking the example of identifying the second rTWT SP without adding an identifier bit in the first radio frame, and the first device being a STA, the coordinated transmission method provided by this disclosure embodiment is introduced. As shown in Figure 3, the above method includes:

Step 301, AP1 determines a first radio frame, the first radio frame identifies the restricted target wake-up time service time rTWT SP; the rTWT SP includes: the first rTWT SP of the first basic service set BSS where the first device is located, and/or, the second rTWT SP of the second BSS; the second BSS and the first BSS are in the same overlapping basic service set OBSS.

Step 302: Under the first link, send a first radio frame to the STA, instructing the first device to terminate its transmission operation on the first link before the rTWT SP begins.

Step 303: The STA receives the first radio frame under the first link.

Step 304: Before the rTWT SP begins, the STA terminates the transmission operation of the first device on the first link;

In step 304, the first device is a STA, and the STA is the TXOP holder of the current TXOP. The STA can end the transmission operation on the first link before all rTWT SPs start. This can prevent the STA from accessing the channel or transmitting on the first link, affecting the low-latency service transmitted in the first rTWT SP, and avoid causing OBSS interference to the low-latency service transmitted in the rTWT SP (second rTWT SP) of the OBSS.

Alternatively, if the first link belongs to a link set whose operating modes include EMLSR and EMLMR, then the STA can terminate the transmission operation on the first link before all rTWT SPs begin. This avoids interference with low-latency services transmitted within the rTWT SP when switching to the transmission link (i.e., the link that successfully received the initial control frame) in EMLSR and EMLMR scenarios. If the first link's operating mode includes NSTR, meaning the first and second links are an NSTR link pair, then the STA can terminate the transmission operation on the first link before all rTWT SPs begin, avoiding impact on low-latency services transmitted on the second link.

Referring to Figure 4, taking the example of identifying the second rTWT SP without adding an identifier bit in the first radio frame, and the first device being AP2, the coordinated transmission method provided in this disclosure embodiment is described. As shown in Figure 4, the above method includes:

Step 401, AP1 determines the first radio frame, the first radio frame identifies the target wake-up time service time rTWT SP; The rTWT SP includes: the second rTWT SP of the second BSS where AP1 is located; the second BSS and the first BSS where AP2 is located are in the same overlapping basic service set OBSS.

Step 402, send the first wireless frame

Step 403, AP2 receives the first radio frame.

Step 404: Before the second rTWT SP begins, AP2 terminates the transmission operation of the first device on the first link.

In step 402, the first device is AP2, and the working link of AP2 includes the first link (there may be multiple first links in this scenario). AP2 is the TXOP holder of the current TXOP. Then AP2 can end the transmission operation on the first link before the second rTWT SP starts, so as to avoid OBSS interference to the low-latency service transmitted in the rTWT SP (second rTWT SP) of OBSS.

Alternatively, if the first link belongs to a link set whose operating modes include EMLSR and EMLMR, then AP2 can terminate its transmission operation on the first link before the second rTWT SP begins. This avoids OBSS interference to low-latency services transmitted within the second rTWT SP when switching to the transmission link (i.e., the link that successfully received the initial control frame) in EMLSR and EMLMR scenarios and preparing to transmit. If the first link's operating mode includes NSTR, meaning the first and second links are an NSTR link pair, then AP2 can terminate its transmission operation on the first link before the second rTWT SP begins, avoiding impact on low-latency services transmitted on the second link.

Referring to Figure 5, taking an example where a flag bit is added to the first radio frame to identify the second rTWT SP, and the first device is a STA, the coordinated transmission method provided in this disclosure embodiment is described. As shown in Figure 5, the above method includes:

Step 501, AP1 determines a first radio frame, the first radio frame identifies a restricted target wake-up time service time rTWT SP; the rTWT SP includes: the first rTWT SP of the first basic service set BSS where the first device is located, and/or, the second rTWT SP of the second BSS; the second BSS and the first BSS are in the same overlapping basic service set OBSS.

The first radio frame includes first identification information, which identifies the second rTWT SP; for example, the first identification information occupies one bit, which is set to "1" to identify the rTWT SP as the second rTWT SP; or, the first identification information is set to the identifier of AP1, such as the link ID or BSSID of AP1.

Step 502: AP1 sends the first radio frame to STA under the first link.

Step 503: Under the first link, the STA receives the first radio frame and identifies the second rTWT SP according to the first identification information.

Step 504: Before the second rTWT SP begins, the STA ends its transmission operation on the first link;

In step 502, the first device is a STA, and the STA is the TXOP holder of the current TXOP. The STA can end the transmission operation on the first link before the second rTWT SP starts, and avoid OBSS interference caused by low-latency services transmitted in the rTWT SP (second rTWT SP) of OBSS.

Alternatively, if the first link belongs to a link set whose operating modes include EMLSR and EMLMR, then the STA can terminate the transmission operation on the first link before all rTWT SPs begin. This avoids interference with low-latency services transmitted within the rTWT SP when switching to the transmission link (i.e., the link that successfully received the initial control frame) in EMLSR and EMLMR scenarios. If the first link's operating mode includes NSTR, meaning the first and second links are an NSTR link pair, then the STA can terminate the transmission operation on the first link before all rTWT SPs begin, avoiding impact on low-latency services transmitted on the second link.

Referring to Figure 6, taking an example where an identifier bit is added to the first radio frame to identify the second rTWT SP, and the first device is an AP, the coordinated transmission method provided in this disclosure embodiment is described. As shown in Figure 6, the above method includes:

Step 601, AP1 determines the first radio frame, the first radio frame identifies the restricted target wake-up time service time rTWT SP; the rTWT SP includes: the second rTWT SP of the second BSS where AP1 is located; the second BSS and the first BSS where AP2 is located are in the same overlapping basic service set OBSS.

The first radio frame includes first identification information, which identifies the second rTWT SP; for example, the first identification information occupies one bit, which is set to "1" to identify the rTWT SP as the second rTWT SP; or, the first identification information is set to the identifier of AP1, such as the link ID or BSSID of AP1.

Step 602, AP1 sends the first radio frame.

Step 603, AP2 receives the first wireless frame.

Step 604: Before the second rTWT SP begins, AP2 terminates the transmission operation of the first device on the first link.

In step 602, the first device is AP2, and AP2 is the TXOP holder of the current TXOP. AP2 can end the transmission operation on the first link before the second rTWT SP starts, so as to avoid OBSS interference to the low-latency service transmitted in the rTWT SP (second rTWT SP) of OBSS.

Alternatively, if the first link belongs to a link set whose operating modes include EMLSR and EMLMR, then AP2 can terminate its transmission operation on the first link before the second rTWT SP begins, avoiding switching to the transmission link (i.e., in EMLSR and EMLMR scenarios) When the link that has successfully received the initial control frame is ready to transmit, the transmission operation causes OBSS interference to the low-latency services transmitted within the second rTWT SP. The first link operates in an NSTR mode, meaning the first and second links are an NSTR link pair. Therefore, AP1 can terminate the transmission operation on the first link before all rTWT SPs begin, avoiding impact on the low-latency services transmitted on the second link.

In some embodiments, the names of information, etc., are not limited to the names described in the embodiments. Terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

In some embodiments, terms such as “moment,” “point in time,” “time,” and “time location” can be used interchangeably, as can terms such as “duration,” “segment,” “time window,” “window,” and “time.”

In some embodiments, terms such as wireless access scheme and waveform can be used interchangeably.

In some embodiments, terms such as "certain," "preset," "default," "set," "indicated," "a certain," "any," and "first" can be used interchangeably. "Certain A," "preset A," "default A," "set A," "indicated A," "a certain A," "any A," and "first A" can be interpreted as A pre-defined in a protocol or the like, or as A obtained through setting, configuration, or instruction, or as specific A, a certain A, any A, or first A, but are not limited thereto.

In some embodiments, the determination or judgment can be made by a value represented by 1 bit (0 or 1), or by a true or false value (boolean), or by a comparison of numerical values (e.g., a comparison with a predetermined value), but is not limited thereto.

In some embodiments, "not expecting to receive" can be interpreted as not receiving on time domain resources and/or frequency domain resources, or as not performing subsequent processing on the data after receiving it; "not expecting to send" can be interpreted as not sending, or as sending but not expecting the receiver to respond to the sent content.

The coordinated transmission method involved in the embodiments of this disclosure may include the foregoing steps and at least one of the embodiments. For example, step 201 can be implemented as an independent embodiment, step 2001 can be implemented as an independent embodiment, step 2002 can be implemented as an independent embodiment, steps 202 and 2002 can be implemented as independent embodiments, step 301 can be implemented as an independent embodiment, step 303 can be implemented as an independent embodiment, step 304 can be implemented as an independent embodiment, step 401 can be implemented as an independent embodiment, step 403 can be implemented as an independent embodiment, step 404 can be implemented as an independent embodiment, step 501 can be implemented as an independent embodiment, step 503 can be implemented as an independent embodiment, step 504 can be implemented as an independent embodiment, and step 601 and step 603 can be implemented as independent embodiments. Step 604 can be implemented as an independent embodiment; the combination of steps 201 with steps 202 and 2002 can be implemented as an independent embodiment; the combination of steps 301 with steps 202 and 2002 can be implemented as an independent embodiment; the combination of steps 303 with steps 304 can be implemented as an independent embodiment; the combination of steps 401 with steps 402 can be implemented as an independent embodiment; the combination of steps 403 with steps 404 can be implemented as an independent embodiment; the combination of steps 501 with steps 502 can be implemented as an independent embodiment; the combination of steps 503 with steps 504 can be implemented as an independent embodiment; the combination of steps 601 with steps 602 can be implemented as an independent embodiment; the combination of steps 603 with steps 604 can be implemented as an independent embodiment, but not limited thereto.

In some embodiments, other alternative implementations may be described before or after the specification corresponding to Figures 2a to 6.

Figure 7 is a schematic flowchart of a coordinated transmission method according to an embodiment of the present disclosure.

As shown in Figure 7, the above method can be applied to the first device, and the method includes:

Step 701, under the first link, receive a first radio frame; the first radio frame identifies the restricted target wake-up time service time rTWT SP; the rTWT SP includes: the first rTWT SP of the first basic service set (BSS) where the first device is located, and/or, the second rTWT SP of the second BSS; the second BSS and the first BSS are in the same overlapping basic service set (OBSS);

Step 702: Before the start of the rTWT SP, or before the start of the second rTWT SP, terminate the transmission operation of the first device on the first link.

Optionally, in this embodiment of the disclosure, the first device includes a station device (STA), which terminates the transmission operation of the first device on the first link before the rTWT SP begins;

or

The first device includes an access point device (AP), which terminates the transmission operation of the first device on the first link before the second rTWT SP begins.

Optionally, in this embodiment of the disclosure, the STA terminates the transmission operation of the first device on the first link before the rTWT SP begins, including:

The first device is the current transmission opportunity (TXOP) holder, or the first link belongs to a set of links whose operating modes include Enhanced Multi-Link Single Radio eMLSR, Enhanced Multi-Link Multi-Radio eMLMR, or Non-Simultaneous Transmit/Receive NSTR.

The STA terminates its transmission operation on the first link before the rTWT SP begins.

Optionally, in this embodiment of the disclosure, the AP terminates the transmission operation of the first device on the first link before the second rTWT SP begins, including:

Before the second rTWT SP begins, the transmission operation of the first device on the first link ends; the first link belongs to a set of links whose working modes include eMLSR, eMLMR or NSTR, or the first link and the second link of the second rTWT are NSTR link pairs.

Optionally, in this embodiment of the present disclosure, the first wireless frame includes first identification information, which identifies the second rTWT SP;

The first device terminates its transmission operation on the first link before the second rTWT SP begins.

Optionally, in this embodiment of the disclosure, the first device terminates its transmission operation on the first link before the second rTWT SP begins, including:

The first device includes a STA, and the STA is the TXOP holder of the current TXOP. Before the second rTWT SP begins, the STA ends the transmission operation of the first device on the first link, and after the second rTWT SP ends, it competes to regain the TXOP through the Enhanced Distributed Channel Access (EDCA) mechanism.

Alternatively, if the first link belongs to a set of links whose operating modes include eMLSR, eMLMR, or NSTR, the STA terminates its transmission operation on the first link before the second rTWT SP begins.

Optionally, in this embodiment of the disclosure, the first device terminates its transmission operation on the first link before the second rTWT SP begins, including:

The first device includes an AP, and the AP is the TXOP holder of the current TXOP. Before the second rTWT SP begins, the AP terminates the transmission operation of the first device on the first link, and after the second rTWT SP ends, it competes to regain the TXOP through the EDCA mechanism.

Alternatively, the AP may transmit or receive on the first link, and the AP may terminate its transmission operation on the first link before the second rTWT SP begins; the first link may belong to a set of links whose working modes include eMLSR, eMLMR, or NSTR, or the first link and the second link of the second rTWT may be an NSTR link pair.

The coordinated transmission method involved in the embodiments of this disclosure may include the foregoing steps and at least one of the embodiments. For example, step 701 may be implemented as a separate embodiment, step 702 may be implemented as a separate embodiment; the combination of steps 301 and 302 may be implemented as a separate embodiment, but is not limited thereto.

In some embodiments, other optional implementations described before or after the specification corresponding to FIG7 may be referred to.

Figure 8 is a second schematic flowchart illustrating a coordinated transmission method according to an embodiment of the present disclosure.

As shown in Figure 8, the method is applied to an access point device (AP), and the method includes:

Step 801: Determine a first radio frame, the first radio frame identifying the restricted target wake-up time service time rTWT SP; the rTWT SP includes: the first rTWT SP of the first basic service set (BSS) where the first device is located, and/or, the second rTWT SP of the second BSS; the second BSS and the first BSS are in the same overlapping basic service set (OBSS);

Step 802: Under the first link, send a first radio frame to the first device, instructing the first device to terminate its transmission operation on the first link before the start of the rTWT SP or before the start of the second rTWT SP.

The coordinated transmission method involved in the embodiments of this disclosure may include the foregoing steps and at least one of the embodiments. For example, step 801 may be implemented as a separate embodiment, step 802 may be implemented as a separate embodiment, and the combination of steps 801 and 802 may be implemented as a separate embodiment, but is not limited thereto.

In some embodiments, other optional implementations described before or after the specification corresponding to FIG8 may be referred to.

This disclosure also provides embodiments of an apparatus for implementing any of the above methods. For example, an apparatus is provided that includes units or modules for implementing the steps performed by the terminal in any of the above methods. Furthermore, another apparatus is provided, including components for implementing the above... The unit or module of each step performed by a network device (e.g., access network device, core network functional node, core network device, etc.) in any method.

It should be understood that the division of units or modules in the above device is only a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, the units or modules in the device can be implemented by a processor calling software: for example, the device includes a processor connected to a memory containing instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of the units or modules in the above device. The processor can be, for example, a general-purpose processor, such as a Central Processing Unit (CPU) or a microprocessor, and the memory can be internal or external to the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits. The functionality of some or all of the units or modules can be achieved through the design of these hardware circuits, which can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC). The functionality of some or all of the units or modules is achieved through the design of the logical relationships between the components within the circuit. In another implementation, the hardware circuit can be implemented using a programmable logic device (PLD). Taking a field-programmable gate array (FPGA) as an example, it can include a large number of logic gates. The connection relationships between the logic gates are configured through configuration files, thereby achieving the functionality of some or all of the units or modules. All units or modules of the above device can be implemented entirely through processor-called software, entirely through hardware circuits, or partially through processor-called software with the remaining parts implemented through hardware circuits.

In this embodiment, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute capabilities, such as a Central Processing Unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationships of hardware circuits. The logical relationships of the aforementioned hardware circuits are fixed or reconfigurable. For example, the processor is a hardware circuit implemented using an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and configuring the hardware circuit can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be hardware circuits designed for artificial intelligence, which can be understood as ASICs, such as Neural Network Processing Unit (NPU), Tensor Processing Unit (TPU), Deep Learning Processing Unit (DPU), etc.

Figure 9 is a schematic diagram of the structure of the first device proposed in an embodiment of this disclosure. As shown in Figure 9, the first device 900 may include at least one of a receiving module 901, a coordination module 902, etc.

In some embodiments, the receiving module 901 is used to determine a first wireless frame; wherein the first wireless frame includes first identification information, the first identification information indicating that: the STA requests to wake up the access point device AP in a power-saving state to transmit uplink data; the coordination module 902 is used to send the first wireless frame to the second AP.

Optionally, the receiving module 901 is used to perform at least one of the communication steps performed by the first device 101 in any of the above methods (e.g., steps 201, 2001, 303, 403, 503, 603, 701, but not limited thereto), which will not be described in detail here. The coordination module 902 is used to perform at least one of the communication steps performed by the first device 101 in any of the above methods (e.g., steps 202, 2002, 2002, 304, 404, 504, 604, 702, but not limited thereto), which will not be described in detail here.

Figure 10 is a schematic diagram of the structure of an access point device (AP) according to an embodiment of this disclosure. As shown in Figure 10, the access point device (AP) 1000 may include: a determination module 1001 and a transmission module 1002.

In some embodiments, the determining module 1001 is configured to determine a first radio frame, wherein the first radio frame identifies a restricted target wake-up time service time rTWT SP; the rTWT SP includes: the first rTWT SP of a first basic service set (BSS) where the first device is located, and/or the second rTWT SP of a second BSS; the second BSS and the first BSS are in the same overlapping basic service set (OBSS).

The transmitting module 1002 is configured to transmit a first radio frame to a first device under the first link, instructing the first device to terminate its transmission operation on the first link before the start of the rTWT SP or before the start of the second rTWT SP.

Optionally, the determining module 1001 is used to execute at least one of the communication steps performed by the access point device (AP) in any of the above methods (e.g., steps 301, 401, 501, 601, 801, but not limited thereto), which will not be described in detail here. The sending module 1002 is used to execute at least one of the communication steps performed by the access point device (AP) in any of the above methods (e.g., steps 302, 402, 502, 602, 802, but not limited thereto), which will not be described in detail here.

Figure 11 is a schematic diagram of the structure of a terminal 1100 (e.g., a user equipment) according to an embodiment of this disclosure. The terminal 1100 can be a support... The chip, chip system, or processor that enables network devices to implement any of the above methods can also be a chip, chip system, or processor that enables terminals to implement any of the above methods. Terminal 1100 can be used to implement the methods described in the above method embodiments, and for details, please refer to the description in the above method embodiments.

As shown in Figure 11, terminal 1100 includes one or more processors 1101. The processor 1101 can be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control communication devices (e.g., base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute programs, and process program data. Terminal 1100 is used to execute any of the above methods.

In some embodiments, terminal 1100 further includes one or more memories 1102 for storing instructions. Optionally, all or part of the memories 1102 may also be located outside of terminal 1100.

In some embodiments, the terminal 1100 further includes one or more transceivers 1104. When the terminal 1100 includes one or more transceivers 1104, the transceivers 1104 perform at least one of the communication steps such as sending and/or receiving in the above method (e.g., steps 201, 2001, 202, 2002, 2002, 302, 303, 402, 403, 502, 503, 602, 603, but not limited thereto), and the processor 1101 performs at least one of other steps (e.g., steps 301, 304, 401, 404, 502, 503, 602, 603, but not limited thereto).

In some embodiments, a transceiver may include a receiver and/or a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, etc., may be used interchangeably; the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc., may be used interchangeably; and the terms receiver, receiving unit, receiver, receiving circuit, etc., may be used interchangeably.

In some embodiments, terminal 1100 may include one or more interface circuits 1103. Optionally, interface circuit 1103 is connected to memory 1102, and interface circuit 1103 can be used to receive signals from memory 1102 or other devices, and can be used to send signals to memory 1102 or other devices. For example, interface circuit 1103 can read instructions stored in memory 1102 and send the instructions to processor 1101.

The terminal 1100 described in the above embodiments may be a user equipment or other communication device, but the scope of the terminal 1100 described in this disclosure is not limited thereto, and the structure of the terminal 1100 may not be limited by FIG11. The communication device may be an independent device or a part of a larger device. For example, the communication device may be: (1) an independent integrated circuit IC, or chip, or chip system or subsystem; (2) a set of one or more ICs, optionally, the IC set may also include storage components for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, terminal device, smart terminal device, cellular phone, wireless device, handheld device, mobile unit, vehicle device, network device, cloud device, artificial intelligence device, etc.; (6) others, etc.

Figure 12 is a schematic diagram of the structure of the chip 1200 proposed in an embodiment of this disclosure. For cases where the terminal 1100 can be a chip or a chip system, please refer to the schematic diagram of the chip 1200 shown in Figure 12, but it is not limited thereto.

Chip 1200 includes one or more processors 1201, which are used to perform any of the above methods.

In some embodiments, chip 1200 further includes one or more 1203s. Optionally, interface circuitry 1203 is connected to memory 1202. Interface circuitry 1203 can be used to receive signals from memory 1202 or other devices, and interface circuitry 1203 can be used to send signals to memory 1202 or other devices. For example, interface circuitry 1203 can read instructions stored in memory 1202 and send the instructions to processor 1201.

In some embodiments, the interface circuit 1203 performs at least one of the communication steps such as sending and/or receiving in the above method (e.g., steps 201, 2001, 202, 2002, 2002, 302, 303, 402, 403, 502, 503, 602, 603, 701, 802, but not limited thereto), and the processor 1201 performs at least one of other steps (e.g., steps 301, 304, 401, 404, 501, 504, 601, 604, 702, 801, but not limited thereto).

In some embodiments, the terms interface circuit, interface, transceiver pin, transceiver, etc., can be used interchangeably.

In some embodiments, chip 1200 further includes one or more memories 1202 for storing instructions. Optionally, all or part of the memories 1202 may be located outside of chip 1200.

This disclosure also proposes a storage medium storing instructions that, when executed on terminal 1100, cause terminal 1100 to perform any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but not limited thereto; it may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but not limited thereto; it may also be a temporary storage medium.

This disclosure also proposes a program product that, when executed by terminal 1100, causes terminal 1100 to perform any of the above methods. Optionally, the program product is a computer program product.

This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods.

Claims (14)

A coordinated transmission method, applied to a first device, characterized in that the method comprises: Under the first link, a first radio frame is received; the first radio frame identifies the restricted target wake-up time service time rTWT SP; the rTWT SP includes: the first rTWT SP of the first basic service set (BSS) where the first device is located, and/or, the second rTWT SP of the second BSS; the second BSS and the first BSS are in the same overlapping basic service set (OBSS); The transmission operation of the first device on the first link is terminated before the start of the first rTWT SP or before the start of the second rTWT SP. According to claim 1, the coordinated transmission method is characterized in that the first device includes a station device (STA), and the STA terminates the transmission operation of the first device on the first link before the rTWT SP begins; or The first device includes an access point device (AP), which terminates the transmission operation of the first device on the first link before the second rTWT SP begins. According to claim 2, the coordinated transmission method is characterized in that, before the rTWT SP begins, the STA terminates the transmission operation of the first device on the first link, including: The first device is the current transmission opportunity (TXOP) holder, or the first link belongs to a set of links whose operating modes include Enhanced Multi-Link Single Radio eMLSR, Enhanced Multi-Link Multi-Radio eMLMR, or Non-Simultaneous Transmit/Receive NSTR. The STA terminates its transmission operation on the first link before the rTWT SP begins. According to claim 2, the coordinated transmission method is characterized in that, before the second rTWT SP begins, the AP terminates the transmission operation of the first device on the first link, including: Before the second rTWT SP begins, the transmission operation of the first device on the first link ends; the first link belongs to a set of links whose working modes include eMLSR, eMLMR or NSTR, or the first link and the second link of the second rTWT are NSTR link pairs. According to claim 1, the coordinated transmission method is characterized in that the first radio frame includes first identification information, and the first identification information identifies the second rTWT SP; The first device terminates its transmission operation on the first link before the second rTWT SP begins. According to claim 5, the coordinated transmission method is characterized in that, before the second rTWT SP begins, the first device terminates its transmission operation on the first link, including: The first device includes a STA, and the STA is the TXOP holder of the current TXOP. Before the second rTWT SP begins, the STA ends the transmission operation of the first device on the first link, and after the second rTWT SP ends, it competes to regain the TXOP through the Enhanced Distributed Channel Access (EDCA) mechanism. Alternatively, if the first link belongs to a set of links whose operating modes include eMLSR, eMLMR, or NSTR, the STA terminates its transmission operation on the first link before the second rTWT SP begins. According to claim 5, the coordinated transmission method is characterized in that, before the second rTWT SP begins, the first device terminates its transmission operation on the first link, including: The first device includes an AP, and the AP is the TXOP holder of the current TXOP. Before the second rTWT SP begins, the AP terminates the transmission operation of the first device on the first link, and after the second rTWT SP ends, it competes to regain the TXOP through the EDCA mechanism. Alternatively, the AP may transmit or receive on the first link, and the AP may terminate its transmission operation on the first link before the second rTWT SP begins; the first link may belong to a set of links whose working modes include eMLSR, eMLMR, or NSTR, or the first link and the second link of the second rTWT may be an NSTR link pair. A coordinated transmission method, applied to an access point device (AP), characterized in that the method includes: A first radio frame is determined, the first radio frame identifying the target wake-up time service time rTWT SP; the rTWT SP includes: the first rTWT SP of the first basic service set (BSS) where the first device is located, and/or, the second rTWT SP of the second BSS; the second BSS and the first BSS are in the same overlapping basic service set (OBSS); Under the first link, a first radio frame is sent to the first device, instructing the first device to terminate its transmission operation on the first link before the start of the rTWT SP or before the start of the second rTWT SP. A communication device, wherein the communication device is a first device, characterized in that the first device comprises: A receiving module is configured to receive a first radio frame under a first link; the first radio frame identifies a Limiting Target Wake-up Time Service Time (rTWT SP); the rTWT SP includes: the first rTWT SP of the first Basic Service Set (BSS) where the first device is located, and/or the second rTWT SP of the second BSS; the second BSS and the first BSS are in the same Overlapping Basic Service Set (OBSS); A coordination module is used to terminate the transmission operation of the first device on the first link before the start of the rTWT SP or before the start of the second rTWT SP. An access point device (AP), characterized in that the access point device (AP) comprises: A determining module is used to determine a first radio frame, wherein the first radio frame identifies a Limiting Target Wake-Up Time Service Time (rTWT SP); the rTWT SP includes: the first rTWT SP of a first Basic Service Set (BSS) where the first device is located, and/or the second rTWT SP of a second BSS; the second BSS and the first BSS are in the same Overlapping Basic Service Set (OBSS); The transmitting module is configured to transmit a first radio frame to a first device under the first link, instructing the first device to terminate its transmission operation on the first link before the start of the rTWT SP or before the start of the second rTWT SP. A communication device, wherein the communication device is a first device, characterized in that it comprises: One or more processors; The first device is used to perform the coordinated transmission method according to any one of claims 1 to 7. An access point device (AP) is characterized by comprising: One or more processors; The access point device (AP) is used to execute the coordinated transmission method as described in claim 8. A communication system, characterized in that it includes a first device and an access point device (AP); Wherein, the first device determines a first radio frame, the first radio frame identifies a restricted target wake-up time service time rTWT SP; the rTWT SP includes: the first rTWT SP of the first basic service set (BSS) where the first device is located, and/or the second rTWT SP of the second BSS; the second BSS and the first BSS are in the same overlapping basic service set (OBSS); Under the first link, a first radio frame is sent to the first device, instructing the first device to terminate its transmission operation on the first link before the start of the rTWT SP or before the start of the second rTWT SP. A storage medium storing instructions, characterized in that, when the instructions are executed on a communication device, the communication device performs the coordinated transmission method as described in any one of claims 1 to 7, or performs the coordinated transmission method as described in claim 8.