CN115484677A - Time distribution method and device, access point and station - Google Patents

Abstract

The embodiment of the present application discloses a time allocation method and device, an access point, and a station; the method includes: the access point sends a trigger frame, and the trigger frame is used to allocate transmission time within the transmission opportunity TXOP to L stations to transmit wireless frames , the trigger frame includes a public information field and at least one user information field, and the value of L is an integer greater than or equal to 1; the station obtains the trigger frame. Because the common information field carries first information for indicating the first transmission time, and the user information field carries the transmission time for configuring the stations among the L stations corresponding to the user information field within the first transmission time The second information of the trigger frame, so that each station in the L stations can be allocated their own transmission time within the first transmission time through the trigger frame, ensuring compatibility and consistency between the frame structures of the trigger frame, and realizing a trigger A frame triggers the transmission of multiple wireless frames, thereby improving channel utilization efficiency.

Description

Time distribution method and device, access point and station

technical field

The present application relates to the technical field of communications, and in particular to a time allocation method and device, an access point and a station.

Background technique

The Institute of Electrical and Electronic Engineers (Institute of Electrical and Electronic Engineers, IEEE) has formulated the IEEE 802.11 series of protocol standards on wireless local area network (wireless local access network, WLAN), and has formulated a related transmission opportunity (transmission opportunity, TXOP) mechanism. Wherein, if a non-access point station (none access point station, non-AP STA, also referred to as STA or station) obtains a period of time within the allocated TXOP (that is, the transmission time within the TXOP), then the station can In this time slice, there is no need to compete for channels to transmit data, thereby improving channel utilization efficiency.

Currently, the IEEE 802.11ax protocol standard only specifies a scenario where a trigger frame (trigger frame, TF) triggers the transmission of a wireless frame to an access point station (access point station, AP STA, also referred to as AP or access point). However, a next-generation WLAN protocol standard (such as IEEE 802.11be) currently being developed by the IEEE may have a scenario where a trigger frame triggers the transmission of multiple wireless frames. Since each WLAN protocol standard needs to have backward compatibility, when the next-generation WLAN protocol standard such as IEEE 802.11be needs to be compatible with the IEEE 802.11ax protocol standard, how to allocate the transmission time in the TXOP to at least one station also needs to further research.

Contents of the invention

The embodiment of the present application provides a time allocation method and device, an access point, and a station, in order to realize the allocation of the transmission time in the TXOP to at least one station through a trigger frame, and ensure the frame structure of the trigger frame stipulated in each WLAN protocol standard There is compatibility and consistency between them, and one trigger frame can be used to trigger the transmission of multiple wireless frames to improve channel utilization efficiency.

In the first aspect, the embodiment of the present application provides a time allocation method, including:

The access point sends a trigger frame, the trigger frame is used to allocate transmission time within the transmission opportunity TXOP to L stations to transmit wireless frames, the trigger frame includes a public information field and at least one user information field, and the value of L is The value is an integer greater than or equal to 1; where,

The common information field carries first information, and the first information is used to indicate the first transmission time;

The user information field carries second information, and the second information is used to configure a transmission time allocated to a station in the L stations corresponding to the user information field within the first transmission time.

In the second aspect, the embodiment of the present application provides a time allocation method, including:

The station acquires a trigger frame, the trigger frame is used to allocate transmission time within the transmission opportunity TXOP to L stations to transmit wireless frames, the trigger frame includes a public information field and at least one user information field, and the L is greater than or equal to an integer of 1; where,

The common information field carries first information, and the first information is used to indicate the first transmission time;

The user information field carries second information, and the second information is used to configure a transmission time allocated to a station in the L stations corresponding to the user information field within the first transmission time.

In the third aspect, the embodiment of the present application provides a time allocation device, the device includes a processing unit and a communication unit, and the processing unit is used for:

A trigger frame is sent by the communication unit, the trigger frame is used to allocate transmission time within the transmission opportunity TXOP to L stations to transmit wireless frames, the trigger frame includes a public information field and at least one user information field, the L The value of is an integer greater than or equal to 1; among them,

The common information field carries first information, and the first information is used to indicate the first transmission time;

The user information field carries second information, and the second information is used to configure a transmission time allocated to a station in the L stations corresponding to the user information field within the first transmission time.

In a fourth aspect, an embodiment of the present application provides a time allocation device, the device includes a processing unit and a communication unit, and the processing unit is used for:

A trigger frame is acquired by the communication unit, and the trigger frame is used to allocate transmission time within a transmission opportunity TXOP to L stations to transmit a wireless frame, the trigger frame includes a common information field and at least one user information field, and the L is an integer greater than or equal to 1; where,

The common information field carries first information, and the first information is used to indicate the first transmission time;

The user information field carries second information, and the second information is used to configure a transmission time allocated to a station in the L stations corresponding to the user information field within the first transmission time.

In a fifth aspect, the embodiment of the present application provides an access point, including a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured Executed by the processor, the one or more programs include instructions for executing the steps in the first aspect of the embodiments of the present application.

In a sixth aspect, the embodiment of the present application provides a site, including a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured by the The one or more programs include instructions for executing the steps in the second aspect of the embodiments of the present application.

In a seventh aspect, the embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program enables the computer to execute the computer program according to the embodiment of the present application. Part or all of the steps described in the first aspect or the second aspect.

In an eighth aspect, the embodiments of the present application provide a computer program, wherein the computer program is operable to cause a computer to perform some or all of the steps described in the first aspect or the second aspect of the embodiments of the present application. The computer program can be a software installation package.

It can be seen that the access point sends a trigger frame, which is used to allocate transmission time in the TXOP to L stations to transmit wireless frames, and the trigger frame includes a public information field and at least one user information field, and the value of L is An integer greater than or equal to 1; the station gets this trigger frame. Since the public information field of the trigger frame carries the first information for indicating the first transmission time, and the user information field of the trigger frame carries the L corresponding to the user information field for configuring the first transmission time The second information of the transmission time of the stations in the stations, so that each station in the L stations can be assigned a respective transmission time within the first transmission time through the trigger frame, so as to ensure the triggering specified in each WLAN protocol standard. The frame structures of the frames are compatible and consistent, and one trigger frame can be used to trigger the transmission of multiple wireless frames, thereby improving the channel utilization efficiency.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the accompanying drawings that need to be used in the descriptions of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are only for the present application For some embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.

FIG. 1 is a schematic structural diagram of a wireless communication system provided by an embodiment of the present application;

FIG. 2 is a schematic diagram of a frame structure of a trigger frame provided by an embodiment of the present application;

FIG. 3 is a schematic diagram of a frame structure of a common information field in a MU-RTS trigger frame provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of a frame structure of a user information field in a MU-RTS trigger frame provided by an embodiment of the present application;

FIG. 5 is a schematic flow diagram of a time allocation method provided by an embodiment of the present application;

FIG. 6 to FIG. 13 are structural schematic diagrams of a trigger frame allocating transmission opportunity time to a station provided by an embodiment of the present application;

FIG. 14 is a block diagram of functional units of a time distribution device provided by an embodiment of the present application;

Fig. 15 is a block diagram of functional units of another time distribution device provided by the embodiment of the present application;

FIG. 16 is a schematic structural diagram of an access point provided by an embodiment of the present application;

Fig. 17 is a schematic structural diagram of a site provided by an embodiment of the present application.

detailed description

In order for those skilled in the art to better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Apparently, the described embodiments are some of the embodiments of the present application, but not all of them. With regard to the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

The terms "first", "second" and the like in the specification and claims of the present application and the above drawings are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, software, product, or device that includes a series of steps or units is not limited to the listed steps or units, but also includes steps or units that are not listed, or includes , other steps or units inherent in the product or equipment.

Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments.

It should be noted that the "connection" in the embodiments of the present application refers to various connection modes such as direct connection or indirect connection to realize communication between devices, and there is no limitation on this. "Network" and "system" in the embodiments of the present application express the same concept, and the communication system is the communication network.

The embodiments of the present application may be applied to a wireless local area network (Wireless Local Area Network, WLAN). Currently, the protocol standard adopted by WLAN is IEEE 802.11 series. Wherein, the WLAN may include multiple basic service sets (basicservice set, BSS), and the devices in the basic service set may include an access point station (access point station, AP STA, also referred to as AP or access point) and a non-access point station. A point station (none access pointstation, non-AP STA, also referred to as STA or station for short). In addition, each basic service set may contain one access point and at least one station.

Specifically, an access point may be an entity that provides network access for stations connected to it via a wireless medium. The access point connects individual wireless network clients to the Ethernet. The access point may be a network device with a wireless fidelity (Wireless Fidelity, WiFi) chip. The access point may be a device supporting various IEEE 802.11 protocol standards. For example, the access point may support devices of IEEE 802.11ac, IEEE 802.11n, IEEE 802.11g, IEEE 802.11b, IEEE802.11ax, IEEE802.11be, next-generation WLAN protocol standards, and the like. The access point may include a centralized controller, a base station (base station, BS), a base transceiver station (base transceiver station, BTS), a site controller, a switch, and the like.

Further, the access point may include a device that provides a wireless communication function for the station, such as a chip system. Wherein, the chip system may include a chip, and may also include other discrete devices, such as transceiver devices and the like.

Further, the access point can communicate with an Internet Protocol (Internet Protocol, IP) network. For example, the Internet (internet), a private IP network or other data networks and the like.

Specifically, the station may be a wireless communication chip, a wireless sensor or a wireless communication terminal. For example, user equipment (user equipment, UE), remote/remote terminal (remote UE), access terminal, user unit, user station, mobile device, user terminal, intelligent terminal, wireless communication device supporting Wi-Fi communication function , user agent or user device/cellular phone, cordless phone, session initiation protocol (session initiation protocol, SIP) phone, wireless local loop (wireless local loop, WLL) station, personal digital assistant (personal digital assistant, PDA), handheld equipment, in-vehicle equipment, wearable equipment, etc., which are not specifically limited.

Further, the stations may include non-AP extremelyhigh throughput stations (none AP extremelyhigh throughput station, non-AP EHT STA) and non-AP high-efficiency stations (none AP highefficiency station, non-AP HE STA), etc. .

Further, the station may include a device with a transceiver function, such as a chip system. Wherein, the chip system may include a chip, and may also include other discrete devices, such as transceiver devices and the like.

In combination with the above description, the following embodiments of the present application will give an exemplary description of a wireless communication system of an access point and a station in a basic service set.

For example, please refer to FIG. 1 for the wireless communication system of the embodiment of the present application. Wireless communication system 10 may include access point 110 , station 120 and station 130 . Wherein, the access point 110 can provide communication coverage for a specific geographical area, and can communicate with the stations 120 and 130 located within the communication coverage.

Optionally, the wireless communication system 10 may also include multiple access points, and a certain number of stations may be included within the communication coverage of each access point, which is not specifically limited.

Optionally, the wireless communication system 10 may further include access network (radio access network, RAN) equipment, core network (core network, CN) equipment, network controller, mobility management entity and other network entities, which are not specifically limited. .

Optionally, the communication between the access point and the station in the wireless communication system 10 may be wireless communication or wired communication, which is not specifically limited.

Before introducing the time allocation method provided by the embodiment of the present application in detail, the relevant content involved in the embodiment of the present application will be introduced.

1. Trigger frame (trigger frame, TF)

The trigger frame belongs to a media access control (media access control, MAC) frame. Wherein, as shown in FIG. 2, the frame structure (frame format) of the trigger frame may include a frame control (Frame Control, FC) field (field, or domain), a duration (Duration) field, a receiver address (Receiver address) , RA) field, transmitter address (Transmission address, TA) field, a common information (Common Information, Common Info) field, at least one user information (User Information, User Info) field, padding (Padding) field and frame check Sequence (Frame Check Sequence, FCS) field.

It should be noted that different IEEE 802.11 protocol standards may have different specifications for the fields carried in the trigger frame.

The RA field may indicate the receiver address of the trigger frame. When the trigger frame needs to trigger a station to transmit data, the RA field may indicate the MAC address of the station. When the trigger frame needs to trigger at least one station to transmit data, the RA field may indicate a broadcast address.

The TA field may indicate the transmitter address of the trigger frame. When the access point transmitting the trigger frame does not use multiple BSSIDs, the TA field may indicate the MAC address of the access point.

The public information field may indicate information that at least one station triggered by the trigger frame needs to read.

The user information field may respectively indicate information required for each of the plurality of stations triggered by the trigger frame to transmit a response to the trigger frame. Specifically, the trigger frame may include at least one user information field.

The user information field may indicate the station triggered by the trigger frame. That is to say, the user information field has a corresponding relationship with the site. Wherein, when the user information field includes association identifier (association identifier, AID) information, the site indicated by the AID information may be the site triggered by the trigger frame or the site corresponding to the user information field. For example, the AID12 subfield in the user information field may indicate 12 least significant bits (least significant bits, LSBs) of the AID of the station triggered by the trigger frame.

The user information field may indicate a resource unit (RU) allocated to a station triggered by the trigger frame. Wherein, the RU may indicate multiple subcarriers used for uplink and downlink transmission. In addition, the RU allocation subfield (RU allocation subfield) in the user information field may indicate the starting RU of one or more consecutive RUs allocated by the user information field.

The padding field may include padding bits. Wherein, the padding field may be used to ensure the time for the station sending the response frame to the trigger frame to prepare for the transmission of the response frame. Therefore, the length of the padding field may be determined according to the capability of the station sending the response frame to the trigger frame. Additionally, trigger frames may not include padding fields.

The access point may use the trigger frame to trigger the station to perform data transmission, such as uplink data transmission and point-to-point (peer-to-peer, P2P) link data transmission. Wherein, the data transmission of the uplink can be understood as that a station transmits data to the access point; the data transmission of the P2P link can be understood as that one station transmits data to another station on the P2P link.

2. Multi-user request to send (multi-user request to send, MU-RTS) trigger frame

A trigger type (trigger type) subfield in the common information field of the trigger frame may indicate the type of the trigger frame. For example, in Table 1, if the value of the trigger type subfield is set to 3, the type of the trigger frame is MU-RTS, that is, the trigger frame is a MU-RTS trigger frame.

In the IEEE 802.11ax protocol standard, the frame structure of the public information field in the MU-RTS trigger frame is shown in FIG. 3 . Wherein, the frame structure of the public information field includes a trigger type (Trigger Type) subfield, an uplink length (ULLength) subfield, a More TF subfield, a carrier sense required (CS Required) subfield, an uplink bandwidth (UL BW) subfield Field, guard interval + long training sequence type (GI And LTF Type) subfield, MU-MIMO LTF mode (MU-MIMOLTF Mode) subfield, HE-LTF symbol number and midamble period (Number of HE-LTF Symbols and Midamble Periodicity ) subfield, uplink STBC (UL STBC) subfield, LPC, AP transmit power (AP TxPower) subfield, packet expansion ambiguity (PE Disambiguity) subfield, uplink spatial multiplexing (UL SpatialReuse) subfield, Doppler (Doppler) subfield, high efficiency/extreme throughput P160 (HE/EHT P160) subfield, reserved subfield, etc.

In IEEE 802.11ax, the frame structure of the user information field in the MU-RTS trigger frame is shown in FIG. 4 . Among them, the frame structure of the user information field includes an association identifier 12 (AID12) subfield, a resource unit allocation (RU Allocation) subfield, an uplink forward error correction code coding type (UL FEC Coding Type) subfield, an uplink high-efficiency modulation And coding strategy (UL HE-MCS) subfield, uplink DCM subfield, SS allocation/RA-RU information subfield, uplink target received power (UL Target Receive Power) subfield, reserved (Reserved) subfield, etc.

Table 1

3. Access point-assisted single user physical layer protocol data unit (single user PHY protocol data unit, SU PPDU) transmission (AP assisted SU PPDU transmission)

The IEEE 802.11be protocol standard needs to define a mechanism so that the access point can send a modified MU-RTS trigger frame (a modified MU-RTS trigger frame), which can be used to allocate TXOP transmission Time to transmit at least one non-trigger based PPDU (none tirgger based PPDU, non-TBPPDU). in,

(1) The transmission time within the allocated TXOP starts with the end of transmission of the modified MU-RTS trigger frame;

(2) Whether the access point can request the station to respond to the clear to send (clearto send, CTS) frame through the modified MU-RTS trigger frame is pending;

(3) The non-triggered PPDU may be sent by the station to the access point; or, the non-triggered PPDU may be sent by the station to other stations through a peer-to-peer (P2P) link.

At present, the IEEE 802.11ax protocol standard only stipulates that a trigger frame can only allocate a period of time within the TXOP (that is, the transmission time within the TXOP) for the scenario where one or more stations send a wireless frame to the access point through OFDMA ( That is, a trigger frame triggers the transmission of a radio frame to the access point). However, the next-generation WLAN protocol standard (such as IEEE 802.11be) currently being formulated by IEEE may have a trigger frame that can allocate multiple consecutive time slices in the TXOP for a scenario where a station sends wireless frames to an access point or other stations (ie One trigger frame triggers multiple radio frame transmissions). Since each WLAN protocol standard needs to have backward compatibility, when the next-generation WLAN protocol standard such as IEEE 802.11be needs to be compatible with the IEEE 802.11ax protocol standard, how to allocate the transmission time in the TXOP to at least one station also needs to further research.

For example, the IEEE 802.11be protocol standard may stipulate that the 7 reserved bits (B25-B31) in the user information field of the modified MU-RTS trigger frame are used to allocate the transmission time in the TXOP to at least one station, and the IEEE 802.11ax protocol The original UL Length subfields (B4-B15) used to allocate transmission time to a station in the public information field of the MU-RTS trigger frame specified in the standard become reserved bits. However, the above method of using the 7 reserved bits (B25-B31) in the user information field to allocate transmission time to at least one station has the following problems:

(1) The frame structure of the modified MU-RTS trigger frame will be inconsistent with the frame structure of other existing trigger frames, resulting in complexity of implementation;

(2) After all the 7 reserved bits (B25-B31) in the user information field are used up, only one reserved bit (B39) remains in the user information field, which is not conducive to the evolution of standard protocols in the future.

In combination with the above description, this embodiment of the present application provides a schematic flow chart of time allocation, please refer to Figure 5, the method includes:

S510, the access point sends a trigger frame, the trigger frame is used to allocate transmission time within the transmission opportunity TXOP to L stations to transmit wireless frames, the trigger frame includes a public information field and at least one user information field, the value of L is an integer greater than or equal to 1.

Wherein, the public information field carries first information, and the first information is used to indicate the first information of the first transmission time; the user information field carries first information, and the second information is used to configure the first information at the first transmission time. The second information of the transmission time allocated to the stations in the L stations corresponding to the user information field.

S520. The station acquires the trigger frame.

It should be noted that, first of all, the IEEE 802.11ax protocol standard only stipulates that one trigger frame triggers the transmission of one wireless frame to the access point, while the next-generation WLAN protocol standards such as IEEE 802.11be may need to modify the trigger frame to trigger multiple wireless frames. frame transmission.

Based on this, the access point (AP) in the embodiment of the present application can assist (assiste) at least one (that is, L, L≧1) station (STA) to transmit the wireless frame. Wherein, the access point can send a trigger frame, and the trigger frame can be used to allocate transmission time to the L stations to transmit wireless frames, so that the L stations can no longer compete for channels to transmit radio frames within the allocated transmission time. The wireless frame can trigger the transmission of multiple wireless frames through one trigger frame, thereby improving the channel utilization efficiency.

Secondly, within the respective allocated transmission time, the stations in the L stations can send wireless frames to the access point, and can also send wireless frames to other stations in the L stations through the P2P link. It can be seen that the access point can assist the L stations to perform wireless frame transmission by allocating transmission time to the L stations.

Finally, in order to ensure the consistency between the frame structures of the trigger frames stipulated in various WLAN protocol standards, and to realize the allocation of transmission time to at least one station, the embodiment of the present application considers modifying the trigger frame while ensuring that the modified The frame structure of the trigger frame is compatible or consistent with the frame structure of other trigger frames (trigger frames of the same type or different types stipulated by different protocol versions). Wherein, the public information field of the modified trigger frame carries the first information used to indicate the first transmission time allocated to the L stations, and the user information field of the modified trigger frame carries the information used to configure the first transmission time allocated to the L stations. The second information of the transmission time of the station corresponding to the user information field is given, so that each station in the L stations is allocated a respective transmission time within the first transmission time through the first information and the second information.

Specifically, the first transmission time may be used to indicate the total duration of transmission time in the TXOP allocated to the L stations by the trigger frame.

It can be understood that the access point sends a trigger frame, where the trigger frame is used to allocate transmission time within the TXOP to the L stations. Wherein, the first information in the public information field of the trigger frame is used to indicate the total duration of the transmission time in the TXOP allocated to L stations; the second information in the user information field of the trigger frame is used to configure the total duration The transmission time assigned to the station corresponding to the user information field in the .

Specifically, the first information may be a subfield in the common information field of the trigger frame. Wherein, the subfield may be a subfield in the existing 802.11 protocol standard, or may be a redefined, newly defined or newly added subfield in the 802.11 protocol standard, and there is no specific limitation on this. For example, as shown in FIG. 3, the first information may be the uplink length subfield (B4-B15) in the common information field.

It should be noted that, in this embodiment of the present application, the subfields carried in the public information field of the trigger frame may be modified, redefined, newly defined, or added to obtain the first information, which may be used to indicate to L The first transmission time assigned by each station.

Specifically, the second information may be a subfield in the user information field of the trigger frame. Wherein, the subfield may be a subfield in the existing 802.11 protocol standard, or may be a redefined, newly defined or newly added subfield in the 802.11 protocol standard, and there is no specific limitation on this.

For example, as shown in FIG. 3, the second information may be the time allocation subfields (B25-B31) in the user information field.

Specifically, the second information may be N reserved bit information in the user information field of the trigger frame, where the value of N is an integer greater than or equal to 1. Wherein, the N reserved bit information may be reserved bits in the existing 802.11 protocol standard, or may be redefined, newly defined or newly added reserved bits, and there is no specific limitation on this.

For example, as shown in Figure 3, the embodiment of the present application can modify the 7 reserved bits (B25-31) of the user information field to N (1≤N<7) reserved bits, thereby saving the occupation of the user information field the number of bits.

Specifically, the user information field has a corresponding relationship with the sites in the L sites, and the corresponding relationship may be indicated by the association identifier information in the user information field.

Wherein, the association identifier information may be the association identifier 12 subfields (B0-B11).

It should be noted that, the AID12 subfield in the user information field of the trigger frame may indicate the station corresponding to the AID12 subfield. For example, as shown in Figure 2, the trigger frame carries L user information fields, and the L user information fields have a certain arrangement order in the frame structure of the trigger frame, and each user information field in the L user information fields The AID12 subfield indicates a station, that is, the L user information fields are in one-to-one correspondence with the L stations, so that the L stations are triggered by the trigger frame.

Specifically, the first transmission time starts from the moment when a station among the L stations first transmits a radio frame.

It should be noted that the access point may send a trigger frame to trigger L stations, allocate a first transmission time to the triggered L stations through the trigger frame, and assign a first transmission time to the triggered L stations within the total duration through the trigger frame. The stations in the stations allocate their respective transmission times to transmit radio frames. Wherein, in the embodiment of the present application, the moment when the station among the L stations first transmits the radio frame may be used as the starting moment of the first transmission time.

Specifically, the first transmission time starts from the moment when the first station in the L stations starts to transmit the wireless frame, and the sequence positions of the user information fields corresponding to the first station in all non-special user information fields of the trigger frame are: First.

It should be noted that all user information fields of the trigger frame have a certain order in the frame structure of the trigger frame, and there may be a special user information field (special userinfo field) in all user information fields of the trigger frame, and the The special user information field will not be used to indicate a site, that is, the special user information field does not correspond to a site. Therefore, in this embodiment of the present application, the remaining user information fields in all user information fields of the trigger frame except the special user information field are referred to as all non-special user information fields of the trigger frame.

Then, in the embodiment of the present application, the first site can be determined from the L sites triggered by the trigger frame, and the user information field corresponding to the first site is ranked first in all non-special user information fields of the trigger frame. , so that the moment when the first station starts to transmit the radio frame is used as the starting moment of the first transmission time.

Specifically, the transmission time of each station in the L stations is allocated sequentially according to the location information; wherein, the location information is used to represent the user information field corresponding to each station in the L stations in all non-special user information fields of the trigger frame Sort sequence position.

It should be noted that, since the user information field corresponding to the site has a certain sequence in all non-special user information fields of the trigger frame, the trigger frame in the embodiment of the present application can be arranged according to the user information field corresponding to the site in the trigger frame. The sequence in all non-special user information fields allocates the transmission time of the station before and after, thereby improving the efficiency and accuracy of transmission time allocation in the TXOP.

For example, the trigger frame sent by the access point triggers the station 1, the station 2 and the station 3, that is, the access point assists the station 1, the station 2 and the station 3 to perform wireless frame transmission. Among them, the sequence position of the user information field corresponding to station 1 in all non-special user information fields of the trigger frame is before station 2, and the user information field corresponding to station 2 is in the order of all non-special user information fields of the trigger frame. The sort order position is before site 3. Therefore, within the first transmission time indicated by the trigger frame, the trigger frame first allocates the transmission time of station 1, then allocates the transmission time of station 2, and finally allocates the transmission time of station 3.

In combination with the foregoing description, the following embodiments of the present application will specifically describe how to allocate the transmission time of each of the L stations through a trigger frame.

method one:

Specifically, the transmission time of each station in the L stations is determined by the first transmission time, the parameter value indicated by the second information, the third information, and the fourth information; the third information is used to indicate the user information corresponding to each station The sequence position of the field in all non-special user information fields of the trigger frame; the fourth information is used to indicate whether there is an interframe space between the wireless frames transmitted by each station.

Wherein, the interframe space may include a short interframe space (short interframe space, SIFS).

It should be noted that the parameter value indicated by the second information may be the parameter value (value) indicated by the N reserved bit information in the user information field of the trigger frame, and the parameter value may be used to configure the user information The transmission time of the station corresponding to the field. At the same time, the trigger frame may include multiple user information fields, and the parameter values indicated by the N reserved bit information in different user information fields may be different, thus causing the trigger frame to be assigned to different user information fields corresponding to Transit times may vary from site to site.

For example, the trigger frame sent by the access point triggers the station 1 and the station 2, that is, the access point assists the station 1 and the station 2 to perform wireless frame transmission. Wherein, the sequence position of the user information field corresponding to station 1 in all non-special user information fields of the trigger frame is before station 2, and the parameter value indicated by the second information in the user information field corresponding to station 1 is the same as that of the station 2 The parameter values indicated by the second information in the corresponding user information field are different. Therefore, within the first transmission time indicated by the trigger frame, the transmission time of the distribution station 1 and the transmission time of the distribution station 2 of the trigger frame may be different.

In addition, in order to avoid collisions of wireless frames sent by various stations on the channel, it is generally necessary to set an inter-frame interval between wireless frames transmitted by various stations. However, since the stations in this embodiment of the present application may both send wireless frames and receive wireless frames, if the two adjacent stations do not need to perform transceiver switching immediately, the wireless frames transmitted by the two adjacent stations may not set frame Interval (details described below). Based on this, when allocating the transmission time of each station, the embodiment of the present application also needs to consider whether there is an inter-frame space between wireless frames transmitted by each station.

It can be seen that in "mode 1", the transmission time of each of the L stations is the first transmission time indicated by the first information in the trigger frame, the parameter value indicated by the second information in the trigger frame, the third information and the fourth information, which is beneficial to ensure the efficiency and accuracy of transmission time allocation and improve the robustness of the communication process.

Example 1: As shown in FIG. 6 , the trigger frame sent by the access point triggers station 1, station 2, and station 3, that is, the access point assists station 1, station 2, and station 3 to perform wireless frame transmission. Among them, the following conditions are met:

The trigger frame is used to allocate transmission time to Station 1, Station 2 and Station 3 to transmit radio frames;

The total duration of the transmission time indicated by the first information in the public information field of the trigger frame is T;

The user information field of the trigger frame includes 3 non-special user information fields; among them, the sequence position of the user information field corresponding to station 1 in all non-special user information fields of the trigger frame is before station 2, and station 2 corresponds to The arrangement order of the user information field in all non-special user information fields of the trigger frame is before station 3;

The parameter value indicated by the second information in the user information field corresponding to site 1 is 2, the parameter value indicated by the second information in the user information field corresponding to site 2 is 4, and the parameter value indicated by the second information in the user information field corresponding to site 3 is The parameter value indicated by the second information is 4;

There is SIFS between the wireless frames transmitted by station 1 and station 2, and there is SIFS between the wireless frames transmitted by station 2 and station 3;

The total duration T of the transmission time allocated by the trigger frame starts from the moment when station 1 starts to transmit the wireless frame;

There is a SIFS between the moment when the transmission of the trigger frame ends and the moment when station 1 starts to transmit the radio frame;

Therefore, within the first transmission time T indicated by the trigger frame (that is, the total duration is T), the trigger frame first allocates the transmission time of station 1 as "T/2", and then assigns the transmission time of station 2 as "T/2". 4-SIFS", and finally assign the transmission time of station 3 as "T/4-SIFS".

Based on the description in "Example 1", if there is a SIFS between the wireless frames transmitted by each station, the transmission time of each station satisfies the following relationship:

Transmission time of a station = T/(value_1);

Transmission time of other stations = (T/(value_2))-SIFS;

Wherein, the sequence position of the user information field corresponding to the station in all non-special user information fields of the trigger frame is the first; T represents the first transmission time indicated by the first information in the public information field of the trigger frame; value_1 indicates the parameter value indicated by the N reserved bit information in the user information field corresponding to the station; value_2 indicates the parameter value indicated by the N reserved bit information in the user information field corresponding to the other station.

Example 2: As shown in FIG. 7 , the trigger frame sent by the access point triggers station 1, station 2 and station 3, that is, the access point assists station 1, station 2 and station 3 to perform wireless frame transmission. Among them, the following conditions are met:

The trigger frame is used to allocate transmission time to Station 1, Station 2 and Station 3 to transmit radio frames;

The total duration of the transmission time indicated by the first information in the public information field of the trigger frame is T;

The user information field of the trigger frame includes 3 non-special user information fields; among them, the sequence position of the user information field corresponding to station 1 in all non-special user information fields of the trigger frame is before station 2, and station 2 corresponds to The arrangement order of the user information field in all non-special user information fields of the trigger frame is before station 3;

The parameter value indicated by the second information in the user information field corresponding to site 1 is 2, the parameter value indicated by the second information in the user information field corresponding to site 2 is 4, and the parameter value indicated by the second information in the user information field corresponding to site 3 is The parameter value indicated by the second information is 4;

There is no SIFS between the wireless frames transmitted by station 1 and station 2, and there is SIFS between the wireless frames transmitted by station 2 and station 3;

The total duration T of the transmission time allocated by the trigger frame starts from the moment when station 1 starts to transmit the wireless frame;

There is a SIFS between the moment when the transmission of the trigger frame ends and the moment when station 1 starts to transmit the radio frame;

Therefore, within the first transmission time T indicated by the trigger frame, the trigger frame first assigns the transmission time of station 1 as "T/2", then assigns the transmission time of station 2 as "T/4", and finally assigns station 3 The transmission time is "T/4-SIFS".

Based on what is described in "Example 2", if there is a SIFS between the wireless frames transmitted by one station and another station, the transmission time of the other station does not set the SIFS.

Method 2:

Specifically, the transmission time of each station in the L stations is determined by the time unit information, the parameter value indicated by the second information, the third information, and the fourth information; the time unit information is determined by the first transmission time and the preset parameter Determined, the value of the preset parameter is greater than or equal to the value of N; the third information is used to indicate the sequence position of the user information fields corresponding to each station in all non-special user information fields of the trigger frame; the fourth information is used Indicates whether there is an interframe space between radio frames transmitted by various stations.

Wherein, the interframe space may include a short interframe space (short interframe space, SIFS).

Wherein, the preset parameter may be specified by the 802.11 standard protocol.

It can be seen that in "mode 2", the transmission time of each of the L stations is the first transmission time indicated by the first information in the trigger frame, the preset parameter, and the parameter indicated by the second information in the trigger frame value, the third information, and the fourth information, so as to ensure the efficiency and accuracy of transmission time allocation and improve the robustness of the communication process.

Further, the time unit information can be satisfied as follows:

TU=T/(2 ^M ) or T/(2 ^M -1);

Wherein, TU represents time unit information; T represents the first transmission time indicated by the first information in the common information field of the trigger frame; M represents a preset parameter.

Wherein, M=N, or M=N+1, or M>N.

It should be noted that, if the second information is N reserved bit information in the user information field, the maximum value of the parameter value indicated by the N reserved bit information may be 2 ^N -1. When the transmission time allocated to a station is "TU*value_3", and value_3 represents the parameter value indicated by the second information in the user information field corresponding to the station, since TU is equal to T divided by (2 ^M -1) , and the maximum value of value_3 is 2 ^N -1, so it can be guaranteed that the transmission time allocated to this station does not exceed the total duration T of TXOP transmission.

Example 3: As shown in FIG. 8 , the trigger frame sent by the access point triggers station 1 , station 2 and station 3 , that is, the access point assists station 1 , station 2 and station 3 to perform wireless frame transmission. Among them, the following conditions are met:

The trigger frame is used to allocate transmission time to Station 1, Station 2 and Station 3 to transmit radio frames;

The total duration of the transmission time indicated by the first information in the public information field of the trigger frame is T;

The user information field of the trigger frame includes 3 non-special user information fields; among them, the sequence position of the user information field corresponding to station 1 in all non-special user information fields of the trigger frame is before station 2, and station 2 corresponds to The arrangement order of the user information field in all non-special user information fields of the trigger frame is before station 3;

The parameter value indicated by the second information in the user information field corresponding to site 1 is 8, the parameter value indicated by the second information in the user information field corresponding to site 2 is 4, and the parameter value indicated by the second information in the user information field corresponding to site 3 is The parameter value indicated by the second information is 4;

There is SIFS between the wireless frames transmitted by station 1 and station 2, and there is SIFS between the wireless frames transmitted by station 2 and station 3;

The total duration T of the transmission time allocated by the trigger frame starts from the moment when station 1 starts to transmit the wireless frame;

There is a SIFS between the moment when the transmission of the trigger frame ends and the moment when station 1 starts to transmit the radio frame;

Therefore, within the first transmission time T indicated by the trigger frame, the trigger frame first allocates the transmission time of station 1 as "TU*8", then assigns the transmission time of station 2 as "TU*4-SIFS", and finally allocates The transmission time of station 3 is "TU*4-SIFS".

Based on the description in "Example 1", if there is a SIFS between the wireless frames transmitted by each station, the transmission time of each station satisfies the following relationship:

The transmission time of a station=TU*(value_3);

Transmission time of other stations = TU*(value_4)-SIFS;

TU=T/(2 ^M ) or T/(2 ^M -1), and M≥N;

Wherein, the sequence position of the user information field corresponding to the station in all non-special user information fields of the trigger frame is the first; T represents the first transmission time indicated by the first information in the public information field of the trigger frame; value_3 indicates the parameter value indicated by the N reserved bit information in the user information field corresponding to the station; value_4 indicates the parameter value indicated by the N reserved bit information in the user information field corresponding to the other station.

Example 4: As shown in FIG. 9 , the trigger frame sent by the access point triggers station 1 , station 2 and station 3 , that is, the access point assists station 1 , station 2 and station 3 to perform wireless frame transmission. Among them, the following conditions are met:

The trigger frame is used to allocate transmission time to Station 1, Station 2 and Station 3 to transmit radio frames;

The total duration of the transmission time indicated by the first information in the public information field of the trigger frame is T;

The user information field of the trigger frame includes 3 non-special user information fields; among them, the sequence position of the user information field corresponding to station 1 in all non-special user information fields of the trigger frame is before station 2, and station 2 corresponds to The arrangement order of the user information field in all non-special user information fields of the trigger frame is before station 3;

The parameter value indicated by the second information in the user information field corresponding to site 1 is 8, the parameter value indicated by the second information in the user information field corresponding to site 2 is 4, and the parameter value indicated by the second information in the user information field corresponding to site 3 is The parameter value indicated by the second information is 4;

There is no SIFS between the wireless frames transmitted by station 1 and station 2, and there is SIFS between the wireless frames transmitted by station 2 and station 3;

The total duration T of the transmission time allocated by the trigger frame starts from the moment when station 1 starts to transmit the wireless frame;

There is a SIFS between the moment when the transmission of the trigger frame ends and the moment when station 1 starts to transmit the radio frame;

Therefore, within the first transmission time T indicated by the trigger frame, the trigger frame first assigns the transmission time of station 1 as "TU*8", then assigns the transmission time of station 2 as "TU*4", and finally assigns station 3 The transmission time is "TU*4-SIFS".

According to "Example 4", if there is SIFS between the radio frames transmitted by one station and another station, the transmission time of the other station does not set SIFS.

In combination with the foregoing description, the following specifically describes whether there is an inter-frame space between the wireless frames transmitted by each station.

Specifically, the L stations include the second station and the third station, the order in which the second station transmits the wireless frame is before the third station transmits the wireless frame, and the user information field corresponding to the second station is in all non-special user information of the trigger frame The sequence position in the field is the previous one of the third station; if the receiver address RA of the second station transmitting the radio frame is not the medium access control MAC address of the third station, and the RA of the third station transmitting the radio frame is not the second If the MAC address of the station and the required carrier sense subfield in the public information field are No, there is no inter-frame space between the wireless frame transmitted by the second station and the wireless frame transmitted by the third station.

It should be noted that, in the process of sending or receiving the wireless frame, the station needs a certain period of time to perform the switching between sending and receiving, so as to ensure the success of sending or receiving. If the RA of the wireless frame transmitted by the third station is the MAC address of the second station, that is, the third station needs to transmit the wireless frame to the second station, since the order in which the second station transmits the wireless frame is before the third station transmits the wireless frame, so for It is ensured that there is a certain time interval between the sending and receiving of the second station, and there must be an inter-frame interval between the wireless frames transmitted by the adjacent second station and the third station.

In addition, if the required carrier sense subfield (CS required subfield) in the public information field of the trigger frame is set to 0, that is, the required carrier sense subfield is false, it means that the station triggered by the trigger frame does not need Perform carrier sense.

It can be seen that if the RA of the wireless frame transmitted by the second station is not the MAC address of the third station, and the RA of the wireless frame transmitted by the third station is not the MAC address of the second station, and the required carrier sense subfield in the public information field is No , there is no interframe space between the radio frame transmitted by the second station and the radio frame transmitted by the third station, thereby saving the overhead of the interframe space.

Combining the above-mentioned figures 7 and 9, if the second station is "Site 1" and the third station is "Site 2", the RA of station 1 transmitting the wireless frame is not the MAC address of station 2, and the RA of station 2 transmitting the wireless frame If RA is not the MAC address of station 1, there is no SIFS between the wireless frames transmitted by station 1 and station 2.

In conjunction with the above description, in "mode 1", the station's transmission time may be equal to T divided by value_1, and value_1 is guaranteed to be a non-zero value, that is, the parameter value indicated by the second information is a non-zero value. The following describes the case where the parameter value indicated by the second information is 0.

Specifically, the L sites include the fourth site and the fifth site, and the order of arrangement of the user information field corresponding to the fourth site in all non-special user information fields of the trigger frame is the previous one of the fifth site; if the fifth site If the parameter value indicated by the corresponding second information is 0, then the transmission time allocated to the fifth station and the transmission time allocated to the fourth station are the same time period that overlaps.

It can be understood that the access point can allocate the overlapping same time period to the station corresponding to the user information field by triggering the second information in the user information field of the frame, so as to ensure the flexibility of transmission time allocation and optimize transmission The time allocation method improves the efficiency of transmission time allocation and saves transmission time.

For example, the trigger frame sent by the access point triggers the station 1, the station 2 and the station 3, that is, the access point assists the station 1, the station 2 and the station 3 to perform wireless frame transmission. Among them, the following conditions are met:

The user information fields corresponding to station 1 are arranged in the order of all non-special user information fields in the trigger frame before station 2, and the user information fields corresponding to station 2 are arranged in all non-special user information fields in the trigger frame The ordinal position is before site 3;

The parameter value indicated by the second information in the user information field corresponding to site 1 is not 0, the parameter value indicated by the second information in the user information field corresponding to site 2 is 0, and the parameter value indicated by the second information in the user information field corresponding to site 1 The parameter value indicated by the second information of is not 0;

Therefore, within the first transmission time indicated by the trigger frame, the transmission time allocated to station 1 by the trigger frame and the transmission time allocated to station 2 are the same time period overlapping.

Further, the resource unit (RU) allocated to the fifth site is different from the resource unit allocated to the fourth site.

It can be understood that, although in the time domain, the transmission time allocated to the fourth station and the transmission time of the fifth station overlap the same time period, but in the frequency domain, the resource units allocated to the fourth station and the fifth station The resource units of the stations are different, which is beneficial to avoid mutual interference of radio frames transmitted by the fourth station and the fifth station in the time-frequency domain, and improve utilization efficiency of time-frequency domain resources.

In combination with the above description, the trigger frame may allocate overlapping same time periods to some of the L stations. In addition, since a station in the L stations mainly transmits according to the number of symbols in the wireless frame when transmitting the radio frame, there may be symbols that cannot be completely transmitted by the station within the allocated transmission time. This is explained below.

Specifically, the L stations include the first station group; the transmission time assigned by all the stations in the first station group is the same overlapping time period, and the corresponding user information fields of all the stations in the first station group are triggered The sequence positions in all non-special user information fields of the frame are not the last; the stations in the first station group discard the symbols in the wireless frames that cannot be completely transmitted in the overlapping same time period.

It can be understood that, in the non-last site of the L sites (the user information field corresponding to the last site is the last in the order of all non-special user information fields in the trigger frame), there may be a part of site allocation The transmission times are the same time slots that overlap. Therefore, in the embodiment of the present application, the part of sites may be regarded as the first site group. In addition, since there may be stations in the first station group that cannot transmit enough symbols during the overlapping same time period, this embodiment of the present application considers that the station discards the symbols that cannot be completely transmitted, so as to avoid Data transmission error.

For example, as shown in FIG. 10 , the trigger frame sent by the access point triggers station 1 , station 2 and station 3 , that is, the access point assists station 1 , station 2 and station 3 to perform wireless frame transmission. Wherein, the first site group includes site 1 and site 2, and site 3 is regarded as the last site. At the same time, the transmission time allocated to station 1 by the trigger frame and the transmission time allocated to station 2 overlap the same time period (“T/2”), and the transmission time allocated to station 3 by the trigger frame is “T/2” -SIFS". If station 2 has data that cannot be completely transmitted within the overlapping same time period, station 2 discards the data that cannot be completely transmitted, that is, does not transmit the data.

In combination with the above description, the transmission time allocated to the last station (the user information field corresponding to the last station is the last in the order of all non-special user information fields in the trigger frame) needs to occupy the entire first The remaining time in the transmission time is described.

Specifically, the L stations include the second station group; the transmission time allocated by all the stations in the second station group is the same overlapping time period, and the user information field corresponding to a station in the second station group is in the trigger frame The sequence position in all non-special user information fields of , is the last; the overlapping same time period takes up the remaining time in the first transmission time.

It can be understood that the transmission time allocated to the last station among the L stations may overlap with the transmission time allocated to some non-last stations in the same time period. Therefore, in the embodiment of the present application, the part of the non-last site and the last site may be regarded as the second site group. At the same time, the overlapping same time period needs to occupy the remaining duration of the first transmission time indicated by the trigger frame, which is beneficial to ensure the accuracy of transmission time allocation.

For example, as shown in FIG. 11 , the trigger frame sent by the access point triggers station 1 , station 2 and station 3 , that is, the access point assists station 1 , station 2 and station 3 to perform wireless frame transmission. Wherein, the second site group includes site 2 and site 3, and site 3 is regarded as the last site. At the same time, the transmission time allocated to station 1 by the trigger frame is "T/2", and the transmission time allocated to station 2 by the trigger frame and the transmission time allocated to station 3 are the same time period overlapping ("T/2- SIFS"), the overlapping same period takes up the remaining duration of T.

In combination with the above description, since the non-last station among the L stations mainly transmits according to the number of symbols in the radio frame when transmitting a radio frame, the station may have incomplete transmission within its allocated transmission time. amount of symbols. This is explained below.

Specifically, in the transmission time allocated to the sixth station in the first transmission time, the sixth station among the L stations discards the number of symbols in wireless frames that cannot be completely transmitted; the user information field corresponding to the sixth station is in the trigger frame The sort order position in all non-special user information fields of is not the last.

It is understandable that the sixth station can be regarded as not the last station. Since the non-last station may have symbols that cannot be transmitted within the allocated transmission time, the embodiment of the present application considers that the non-last station discards the symbols that cannot be transmitted, so as to avoid data transmission within the allocated transmission time mistake.

In combination with the above description, the transmission time allocated to the last station needs to occupy the remaining duration of the entire first transmission time.

Specifically, the transmission time allocated to the seventh station among the L stations within the first transmission time takes up the remaining duration in the first transmission time; the user information field corresponding to the seventh station is included in all non-special user information in the trigger frame The sort order position in the field is last.

It is understandable that the seventh station can be regarded as the last station. Therefore, the transmission time allocated to the last station needs to occupy the entire remaining duration of the first transmission time indicated by the trigger frame, which is beneficial to ensure the accuracy of transmission time allocation.

In combination with the above description, the following describes the situation that some of the L stations transmit wireless frames that do not use up their allocated transmission time.

Specifically, if the wireless frame transmitted by the eighth station among the L stations is not enough to use up the transmission time allocated to the eighth station within the first transmission time, then add padding data to the wireless frame transmitted by the eighth station; The sequence position of the user information fields corresponding to the eight stations in all non-special user information fields of the trigger frame is any one.

It can be understood that the eighth site can be regarded as any one of the L sites. Therefore, in the embodiment of the present application, data padding can be performed on the wireless frame transmitted by the eighth station to ensure that the padded wireless frame can use up its allocated transmission time, thereby helping to ensure the accuracy of transmission time allocation.

With reference to the above description, the trigger frame in this embodiment of the present application may further include information for instructing a station among the L stations to respond to a clear to send (CTS) frame.

It should be noted that, in order to solve the problem of "hidden stations (hidden stations)", the 802.11 protocol standard proposes an RTS/CTS mechanism. Therefore, the trigger frame in this embodiment of the present application may indicate whether the L stations triggered by it respond to the CTS frame, so as to determine whether the channel is idle, and avoid data collision or conflict.

In the following, when the station L needs to reply the CTS frame to the access point, the distribution of the transmission time of each station will be illustrated as an example.

For example, see Figure 12 and Figure 13. Since the first transmission time indicated by the trigger frame starts from the moment when the station in the L stations first transmits the wireless frame, whether the L stations respond to the CTS frame may not affect the transmission time allocation of each station.

With reference to the above description, the trigger frame in this embodiment of the present application may be an MU-RTS trigger frame.

It should be noted that, as shown in Figure 2 and Table 1, if the value of the trigger type (trigger type) subfield (B0-B3) in the common information field of the trigger frame is set to 3, then the trigger frame is MU- RTS trigger frame.

With reference to the above description, the wireless frame in this embodiment of the present application may include one of a management frame, a single-user physical layer protocol data unit (SU PPDU) or a non-triggered physical layer protocol data unit (non-TB PPDU).

It should be noted that the management frame may be sent by the station to the access point; or, the management frame may be sent by the station to other stations through a P2P link; or, the non-triggered PPDU may be sent by the station to the access point; Alternatively, the non-triggered PPDU may be sent by the station to other stations through the P2P link.

The foregoing mainly introduces the solutions of the embodiments of the present application from the perspective of the method side. It can be understood that, in order to realize the above functions, the access point or station includes corresponding hardware structures and/or software modules for performing various functions. Those skilled in the art should know that, in combination with the methods, modules, units or algorithm steps described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain method, function, module, unit or step is executed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods for each specific application to implement the described methods, functions, modules, units or steps, but such implementation should not be regarded as exceeding the scope of the present application.

In this embodiment of the present application, functional units/modules may be divided into access points or stations according to the foregoing method examples. For example, each functional unit/module may be divided corresponding to each function, or two or more functions may be integrated into one functional unit/module. The above-mentioned integrated functional units/modules can be implemented not only in the form of hardware, but also in the form of software programs. It should be noted that the division of functional units/modules in the embodiment of the present application is schematic, and is only a logical function division, and there may be another division manner in actual implementation.

In the case of using integrated units/modules, FIG. 14 provides a block diagram of functional units of a time distribution device. The time distribution device 1400 includes: a processing unit 1402 and a communication unit 1403 . The processing unit 1402 is configured to control and manage the actions of the access point. For example, the processing unit 1402 is configured to support the access point to execute the steps in FIG. 5 and other processes used in the technical solutions described in this application. The communication unit 1403 is used to support communication between the access point and other devices in the wireless communication system. The time distribution device 1400 may further include a storage unit 1401 for program codes executed by the time distribution device 1400 and transmitted data.

It should be noted that the time distribution device 1400 may be a chip or a chip module.

Wherein, the processing unit 1402 may be a processor or a controller, for example, may be a central processing unit (central processing unit, CPU), a general processor, a digital signal processor (digital signal processor, DSP), an application-specific integrated circuit (application-specific integrated circuit, ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It may implement or execute the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processing unit 1402 may also be a combination that implements computing functions, for example, a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like. The communication unit 1403 may be a communication interface, a transceiver, a transceiver circuit, etc., and the storage unit 1401 may be a memory. When the processing unit 1402 is a processor, the communication unit 1403 is a communication interface, and the storage unit 1401 is a memory, the time distribution device 1400 involved in this embodiment of the present application may be the access point shown in FIG. 16 .

Specifically, the processing unit 1402 is configured to perform any step performed by the access point in the foregoing method embodiments, and when performing data transmission such as sending, the communication unit 1403 may be selectively called to complete corresponding operations. Detailed description will be given below.

The processing unit 1402 is used to: send a trigger frame, the trigger frame is used to allocate transmission time within the transmission opportunity TXOP to L stations to transmit wireless frames, the trigger frame includes a common information field and at least one user information field, and the value of L is greater than or an integer equal to 1; wherein, the public information field carries first information, and the first information is used to indicate the first transmission time; the user information field carries second information, and the second information is used to configure the allocation to users within the first transmission time The transmission time of a station in the L stations corresponding to the information field.

It can be seen that the time allocation device 1400 sends a trigger frame, which is used to allocate transmission time in the TXOP to L stations to transmit wireless frames, the trigger frame includes a public information field and at least one user information field, and the value of L is is an integer greater than or equal to 1. Since the public information field of the trigger frame carries the first information for indicating the first transmission time, and the user information field of the trigger frame carries the L corresponding to the user information field for configuring the first transmission time The second information of the transmission time of the stations in the stations, so that each station in the L stations can be assigned a respective transmission time within the first transmission time through the trigger frame, so as to ensure the triggering specified in each WLAN protocol standard. The frame structures of the frames are compatible and consistent, and one trigger frame can be used to trigger the transmission of multiple wireless frames, thereby improving the channel utilization efficiency.

It should be noted that, for the specific implementation of each operation in the embodiment shown in FIG. 14 , refer to the description in the method embodiment shown in FIG. 5 above, and details are not repeated here.

Specifically, the first information is the uplink length subfield in the common information field.

Specifically, the user information field has a corresponding relationship with the sites in the L sites, and the corresponding relationship is indicated by the association identifier information in the user information field.

Specifically, the first transmission time starts from the moment when the station in the L stations first transmits the wireless frame; or, the first transmission time starts from the moment when the first station in the L stations starts to transmit the wireless frame, The sequence position of the user information field corresponding to the first station is the first in all non-special user information fields of the trigger frame.

Specifically, the transmission time of each station in the L stations is allocated sequentially according to the location information; the location information is used to indicate the sequence position of the user information fields corresponding to each station in the L stations in all non-special user information fields of the trigger frame .

Specifically, the second information is N reserved bit information in the user information field, and the value of N is an integer greater than or equal to 1.

Specifically, the transmission time of each station in the L stations is determined by the first transmission time, the parameter value indicated by the second information, the third information, and the fourth information; the third information is used to indicate the user information corresponding to each station The sequence position of the field in all non-special user information fields of the trigger frame; the fourth information is used to indicate whether there is an interframe space between the wireless frames transmitted by each station.

Specifically, the transmission time of each station in the L stations is determined by the time unit information, the parameter value indicated by the second information, the third information, and the fourth information; the time unit information is determined by the first transmission time and the preset parameter Definitely, the value of the preset parameter is greater than or equal to the value of N.

Specifically, the L stations include the second station and the third station, the order in which the second station transmits the wireless frame is before the third station transmits the wireless frame, and the user information field corresponding to the second station is in all non-special user information of the trigger frame The sequence position in the field is the previous one of the third station; if the receiver address RA of the second station transmitting the radio frame is not the medium access control MAC address of the third station, and the RA of the third station transmitting the radio frame is not the second If the MAC address of the station and the required carrier sense subfield in the public information field are No, there is no inter-frame space between the wireless frame transmitted by the second station and the wireless frame transmitted by the third station.

Specifically, the L sites include the fourth site and the fifth site, and the order of arrangement of the user information field corresponding to the fourth site in all non-special user information fields of the trigger frame is the previous one of the fifth site; if the fifth site If the parameter value indicated by the corresponding second information is 0, then the transmission time allocated to the fifth station and the transmission time allocated to the fourth station are the same time period that overlaps.

Specifically, the resource units allocated to the fifth site are different from the resource units allocated to the fourth site.

Specifically, the L stations include the first station group; the transmission time assigned by all the stations in the first station group is the same overlapping time period, and the corresponding user information fields of all the stations in the first station group are triggered The sequence positions in all non-special user information fields of the frame are not the last; the stations in the first station group discard the symbols in the wireless frames that cannot be completely transmitted in the overlapping same time period.

Specifically, the L stations include the second station group; the transmission time allocated by all the stations in the second station group is the same overlapping time period, and the user information field corresponding to a station in the second station group is in the trigger frame The sequence position in all non-special user information fields of , is the last; the overlapping same time period takes up the remaining time in the first transmission time.

Specifically, in the transmission time allocated to the sixth station in the first transmission time, the sixth station among the L stations discards the number of symbols in wireless frames that cannot be completely transmitted; the user information field corresponding to the sixth station is in the trigger frame The sort order position in all non-special user information fields of is not the last.

Specifically, the transmission time allocated to the seventh station among the L stations within the first transmission time takes up the remaining duration in the first transmission time; the user information field corresponding to the seventh station is included in all non-special user information in the trigger frame The sort order position in the field is last.

Specifically, if the wireless frame transmitted by the eighth station among the L stations is not enough to use up the transmission time allocated to the eighth station within the first transmission time, then add padding data to the wireless frame transmitted by the eighth station; The sequence position of the user information fields corresponding to the eight stations in all non-special user information fields of the trigger frame is any one.

Specifically, the trigger frame further includes information for instructing a station in the L stations to respond to a clear-to-send CTS frame.

Specifically, the trigger frame is a MU-RTS trigger frame.

Specifically, the radio frame includes one of a management frame, a single-user physical layer protocol data unit SU PPDU, or a non-triggered physical layer protocol data unit non-TB PPDU.

In the case of using integrated units/modules, Fig. 15 provides a block diagram of functional units of another time distribution device. The time distribution device 1500 includes: a processing unit 1502 and a communication unit 1503 . The processing unit 1502 is used to control and manage the actions of the site. For example, the processing unit 1502 is used to support the site to execute the steps in FIG. 5 and other processes used in the technical solution described in this application. The communication unit 1503 is used to support communication between the station and other devices in the wireless communication system. The time distribution device 1500 may further include a storage unit 1501 for storing program codes executed by the time distribution device 1500 and transmitted data.

It should be noted that the time distribution device 1500 may be a chip or a chip module.

Wherein, the processing unit 1502 may be a processor or a controller, for example, may be a central processing unit (central processing unit, CPU), a general processor, a digital signal processor (digital signal processor, DSP), an application-specific integrated circuit (application-specific integrated circuit, ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It may implement or execute the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processing unit 1502 may also be a combination that implements computing functions, for example, a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like. The communication unit 1503 may be a communication interface, a transceiver, a transceiver circuit, etc., and the storage unit 1501 may be a memory. When the processing unit 1502 is a processor, the communication unit 1503 is a communication interface, and the storage unit 1501 is a memory, the time distribution device 1500 involved in this embodiment of the present application may be the station shown in FIG. 17 .

During specific implementation, the processing unit 1502 is used to perform any step performed by the station in the above method embodiments, and when performing data transmission such as sending, the communication unit 1503 may be called to complete corresponding operations. Detailed description will be given below.

The processing unit 1502 is used to: obtain a trigger frame, the trigger frame is used to allocate transmission time within the transmission opportunity TXOP to L stations to transmit wireless frames, the trigger frame includes a public information field and at least one user information field, and L is greater than or equal to 1 An integer of ; wherein, the public information field carries the first information, and the first information is used to indicate the first transmission time; the user information field carries the second information, and the second information is used to configure the information allocated to the user information field corresponding to the first transmission time The transit times of the stations in the L stations of .

It should be noted that, for the specific implementation of each operation in the embodiment shown in FIG. 15 , refer to the description in the method embodiment shown in FIG. 5 above, and details are not repeated here.

It can be seen that the time allocation device 1500 obtains the trigger frame, which is used to allocate transmission time in the TXOP to L stations to transmit wireless frames, the trigger frame includes a public information field and at least one user information field, and the value of L is The value is an integer greater than or equal to 1. Since the public information field of the trigger frame carries the first information for indicating the first transmission time, and the user information field of the trigger frame carries the L corresponding to the user information field for configuring the first transmission time The second information of the transmission time of the stations in the stations, so that each station in the L stations can be assigned a respective transmission time within the first transmission time through the trigger frame, so as to ensure the triggering specified in each WLAN protocol standard. The frame structures of the frames are compatible and consistent, and one trigger frame can be used to trigger the transmission of multiple wireless frames, thereby improving the channel utilization efficiency.

Specifically, the first information is the uplink length subfield in the common information field.

Specifically, the user information field has a corresponding relationship with the sites in the L sites, and the corresponding relationship is indicated by the association identifier subfield in the user information field.

Specifically, the first transmission time starts from the moment when the station in the L stations first transmits the wireless frame; or, the first transmission time starts from the moment when the first station in the L stations starts to transmit the wireless frame, The sequence position of the user information field corresponding to the first site in all non-special user information fields of the trigger frame is the first

Specifically, the transmission time of each station in the L stations is allocated sequentially according to the location information; the location information is used to indicate the sequence position of the user information fields corresponding to each station in the L stations in all non-special user information fields of the trigger frame .

Specifically, the second information is N reserved bit information in the user information field, and the value of N is an integer greater than or equal to 1.

Specifically, the transmission time of each station in the L stations is determined by the first transmission time, the parameter value indicated by the second information, the third information, and the fourth information; the third information is used to indicate the user information corresponding to each station The sequence position of the field in all non-special user information fields of the trigger frame; the fourth information is used to indicate whether there is an interframe space between the wireless frames transmitted by each station.

Specifically, the transmission time of each station in the L stations is determined by the time unit information, the parameter value indicated by the second information, the third information, and the fourth information; the time unit information is determined by the first transmission time and the preset parameter Definitely, the value of the preset parameter is greater than or equal to the value of N.

Specifically, the L stations include the second station and the third station, the order in which the second station transmits the wireless frame is before the third station transmits the wireless frame, and the user information field corresponding to the second station is in all non-special user information of the trigger frame The sequence position in the field is the previous one of the third station; if the receiver address RA of the second station transmitting the radio frame is not the medium access control MAC address of the third station, and the RA of the third station transmitting the radio frame is not the second If the MAC address of the station and the required carrier sense subfield in the public information field are No, there is no inter-frame space between the wireless frame transmitted by the second station and the wireless frame transmitted by the third station.

Specifically, the L sites include the fourth site and the fifth site, and the order of arrangement of the user information field corresponding to the fourth site in all non-special user information fields of the trigger frame is the previous one of the fifth site; if the fifth site If the parameter value indicated by the corresponding second information is 0, then the transmission time allocated to the fifth station and the transmission time allocated to the fourth station are the same time period that overlaps.

Specifically, the resource units allocated to the fifth site are different from the resource units allocated to the fourth site.

Specifically, the L stations include the first station group; the transmission time assigned by all the stations in the first station group is the same overlapping time period, and the corresponding user information fields of all the stations in the first station group are triggered The sequence positions in all non-special user information fields of the frame are not the last; the stations in the first station group discard the symbols in the wireless frames that cannot be completely transmitted in the overlapping same time period.

Specifically, the L stations include the second station group; the transmission time allocated by all the stations in the second station group is the same overlapping time period, and the user information field corresponding to a station in the second station group is in the trigger frame The sequence position in all non-special user information fields of , is the last; the overlapping same time period takes up the remaining time in the first transmission time.

Specifically, in the transmission time allocated to the sixth station in the first transmission time, the sixth station among the L stations discards the number of symbols in wireless frames that cannot be completely transmitted; the user information field corresponding to the sixth station is in the trigger frame The sort order position in all non-special user information fields of is not the last.

Specifically, the transmission time allocated to the seventh station among the L stations within the first transmission time runs out of the remaining duration in the first transmission time; the user information field corresponding to the seventh station is in all non-special user information of the trigger frame The sort order position in the field is last.

Specifically, if the wireless frame transmitted by the eighth station among the L stations is not enough to use up the transmission time allocated to the eighth station within the first transmission time, then add padding data to the wireless frame transmitted by the eighth station; The sequence position of the user information fields corresponding to the eight stations in all non-special user information fields of the trigger frame is any one.

Specifically, the trigger frame further includes information for instructing a station in the L stations to respond to a clear-to-send CTS frame.

Specifically, the trigger frame is a MU-RTS trigger frame.

Specifically, the radio frame includes one of a single-user physical layer protocol data unit SU PPDU or a non-triggered physical layer protocol data unit non-TB PPDU.

Please refer to FIG. 16 . FIG. 16 is a schematic structural diagram of an access point provided by an embodiment of the present application. Wherein, the access point 1600 includes a processor 1610 , a memory 1620 , a communication interface 1630 , and a communication bus for connecting the processor 1610 , the memory 1620 , and the communication interface 1630 .

The memory 1620 includes but is not limited to random access memory (random access memory, RAM), read-only memory (read-only memory, ROM), erasable programmable read-only memory (erasable programmable read-only memory, EPROM) or portable A read-only memory (compact disc read-only memory, CD-ROM), the memory 1620 is used to store program codes executed by the access point 1600 and transmitted data.

The communication interface 1630 is used to receive and send data.

Processor 1610 may be one or more CPUs. In the case that the processor 1610 is a CPU, the CPU may be a single-core CPU or a multi-core CPU.

The processor 1610 in the access point 1600 is configured to read one or more programs 621 stored in the memory 1620, and perform the following operations: send a trigger frame, and the trigger frame is used to allocate transmission time within the transmission opportunity TXOP to L stations for transmission The wireless frame, the trigger frame includes a public information field and at least one user information field, and the value of L is an integer greater than or equal to 1; wherein, the public information field carries first information, and the first information is used to indicate the first transmission time; The user information field carries second information, and the second information is used to configure the transmission time allocated to the stations in the L stations corresponding to the user information field within the first transmission time.

It should be noted that the specific implementation of each operation can use the corresponding description of the method embodiment shown in FIG. 5 above, and the access point 1600 can be used to execute the method on the access point side of the above method embodiment of the present application, which is not described here. More details.

Please refer to FIG. 17 . FIG. 17 is a schematic structural diagram of a site provided by an embodiment of the present application. Wherein, the station 1700 includes a processor 1710 , a memory 1720 , a communication interface 1730 , and a communication bus for connecting the processor 1710 , the memory 1720 , and the communication interface 1730 .

Memory 1720 includes but is not limited to random access memory (random access memory, RAM), read-only memory (read-only memory, ROM), erasable programmable read-only memory (erasable programmable read-only memory, EPROM) or portable Read-only memory (compact disc read-only memory, CD-ROM), the memory 1720 is used to store program codes executed by the station 1700 and transmitted data.

The communication interface 1730 is used to receive and send data.

The processor 1710 may be one or more CPUs. In the case where the processor 1710 is one CPU, the CPU may be a single-core CPU or a multi-core CPU.

The processor 1710 in the station 1700 is configured to read one or more programs 1721 stored in the memory 1720, and perform the following operations: acquire a trigger frame, and the trigger frame is used to allocate transmission time within the transmission opportunity TXOP to L stations to transmit wireless frames , the trigger frame includes a public information field and at least one user information field, L is an integer greater than or equal to 1; wherein, the public information field carries first information, and the first information is used to indicate the first transmission time; the user information field carries the first Two information, the second information is used to configure the transmission time allocated to the stations in the L stations corresponding to the user information field within the first transmission time.

It should be noted that the specific implementation of each operation can use the corresponding description of the method embodiment shown in FIG. 5 above, and the station 1700 can be used to execute the method on the station side of the above method embodiment of the present application, which will not be described in detail here.

An embodiment of the present application also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program enables the computer to execute the website or some or all of the steps described by the access point.

An embodiment of the present application also provides a computer program product, wherein the computer program product includes a computer program, and the computer program is operable to cause the computer to perform the part or All steps. The computer program product may be a software installation package.

It should be noted that, for the above-mentioned embodiments, for the sake of simple description, they are expressed as a series of action combinations. Those skilled in the art should know that the present application is not limited by the sequence of actions described, because some steps in the embodiments of the present application may be performed in other orders or simultaneously. In addition, those skilled in the art should also know that the embodiments described in the specification belong to preferred embodiments, and the actions, steps, modules or units involved are not necessarily required by the embodiments of the present application.

In the above-mentioned embodiments, the embodiments of the present application have different emphases in the description of each embodiment, and for the parts not described in detail in a certain embodiment, refer to the relevant descriptions of other embodiments.

Those skilled in the art should know that the methods, steps or functions of related modules/units described in the embodiments of the present application may be realized in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it may be implemented in whole or in part in the form of a computer program product, or may be implemented in a manner in which a processor executes computer program instructions. Wherein, the computer program product includes at least one computer program instruction, and the computer program instruction can be composed of corresponding software modules, and the software modules can be stored in RAM, flash memory, ROM, EPROM, EEPROM, registers, hard disk, mobile hard disk, CD-ROM (CD-ROM) or any other form of storage medium known in the art. The computer program instructions may be stored in, or transmitted from, one computer-readable storage medium to another computer-readable storage medium. For example, the computer program instructions may be transmitted from one website, computer, server or data center to another website, computer, server or data center by wired or wireless means. The computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrated with one or more available media. The available medium may be a magnetic medium (for example, a floppy disk, a hard disk, or a magnetic tape), an optical medium, or a semiconductor medium (such as an SSD).

Each module/unit contained in each device or product described in the above embodiments may be a software module/unit, may be a hardware module/unit, or may be a part of a software module/unit while the other part is a hardware module/unit. For example, for each device or product applied to or integrated in a chip, each module/unit included in it may be implemented by hardware such as a circuit; or, a part of the modules/units included in it may be implemented by a software program. The software program runs on the processor integrated in the chip, and some modules/units of the other part (if any) can be realized by hardware such as circuits. The same can be understood for each device or product applied to or integrated in a chip module, or each device or product applied to or integrated in a terminal.

The specific implementation manners described above further describe the purpose, technical solutions and beneficial effects of the embodiments of the present application in detail. The scope of protection of the embodiments of the present application is limited. All modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application shall be included in the protection scope of the embodiments of the present application.

Claims (43)

1. A method of time allocation, comprising:

an access point sends a trigger frame, wherein the trigger frame is used for allocating transmission time in transmission opportunity TXOP to L sites to transmit a wireless frame, the trigger frame comprises a public information field and at least one user information field, and the value of L is an integer which is greater than or equal to 1; wherein,

the public information field carries first information, and the first information is used for indicating first transmission time;

the user information field carries second information, and the second information is used for configuring the transmission time allocated to the station in the L stations corresponding to the user information field in the first transmission time.

2. The method of claim 1, wherein the first information is an uplink length subfield in the common information field.

3. A method according to claim 1 or 2, wherein the user information field has a correspondence with a site of the L sites, the correspondence being indicated by association identifier information in the user information field.

4. The method according to any of claims 1-3, wherein the first transmission time starts at a time when a station of the L stations starts to transmit the radio frame; or,

the first transmission time starts from a time when a first site of the L sites starts to transmit the radio frame, and an arrangement order position of the user information field corresponding to the first site in all non-specific user information fields of the trigger frame is a first one.

5. The method according to any of claims 1-4, wherein the transmission times of each of the L stations are allocated in sequence according to location information;

the location information is used to indicate the arrangement sequence location of the user information field corresponding to each of the L sites in all the non-specific user information fields of the trigger frame.

6. The method according to any of claims 1-5, wherein the second information is N reserved bits of information in the user information field, and the value of N is an integer greater than or equal to 1.

7. The method of claim 6, wherein the transmission time of each of the L stations is determined by the first transmission time, a parameter value indicated by the second information, third information, and fourth information;

the third information is used for indicating the arrangement sequence positions of the user information fields corresponding to the stations in all non-specific user information fields of the trigger frame;

the fourth information is used for indicating whether an inter-frame space exists between the radio frames transmitted by the stations.

8. The method of claim 6, wherein the transmission time of each of the L stations is determined by time unit information, a parameter value indicated by the second information, the third information, and the fourth information;

the time unit information is determined by the first transmission time and a preset parameter, and the value of the preset parameter is greater than or equal to the value of the N.

9. The method according to any of claims 1-8, wherein the L stations include a second station and a third station, the second station transmits the radio frame in a sequence before the third station transmits the radio frame, and the sequence position of the user information field corresponding to the second station in all non-special user information fields of the trigger frame is one before the third station;

if the receiver address RA of the wireless frame transmitted by the second station is not the MAC address of the third station, the RA of the wireless frame transmitted by the third station is not the MAC address of the second station, and the carrier sense required subfield in the common information field is no, the interframe space does not exist between the wireless frame transmitted by the second station and the wireless frame transmitted by the third station.

10. The method according to any of claims 1-9, wherein the L stations include a fourth station and a fifth station, and an arrangement order position of the user information field corresponding to the fourth station in all non-special user information fields of the trigger frame is a previous position of the fifth station;

if the parameter value indicated by the second information corresponding to the fifth station is 0, the transmission time allocated to the fifth station and the transmission time allocated to the fourth station are overlapped for the same time period.

11. The method of claim 10, wherein the resource units allocated to the fifth site are different from the resource units allocated to the fourth site.

12. The method of any one of claims 1-11, wherein the L sites comprise a first site group;

the transmission time allocated to all stations in the first station group is the same overlapping time period, and the arrangement sequence position of the user information fields corresponding to all stations in the first station group in all non-special user information fields of the trigger frame is not the last one;

stations in the first station group discard the amount of symbols in the radio frame that are not completely transmitted in the same overlapping time period.

13. A method according to any one of claims 1 to 12, wherein the L sites comprise a second site group;

the transmission time allocated to each of all stations in the second station group is the same overlapping time period, and the arrangement order position of the user information field corresponding to one station in the second station group in all the non-special user information fields of the trigger frame is the last one;

the overlapping same time period occupies the remaining duration of the first transmission time.

14. The method according to any of claims 1-13, wherein a sixth station of said L stations discards the amount of symbols in said radio frame that are not completely transmitted in the transmission time allocated to said sixth station during said first transmission time;

and the arrangement sequence position of the user information field corresponding to the sixth station in all the non-special user information fields of the trigger frame is not the last one.

15. A method according to any one of claims 1 to 14, wherein the transmission time allocated to a seventh station of said L stations during said first transmission time takes up a remaining length of time in said first transmission time;

the order position of the user information field corresponding to the seventh station in all the non-specific user information fields of the trigger frame is the last one.

16. The method according to any of claims 1-15, wherein if said radio frame transmitted by an eighth site of said L sites is insufficient to use up the transmission time allocated to said eighth site within said first transmission time, padding data is added to said radio frame transmitted by said eighth site;

the user information field corresponding to the eighth site is any one of the arrangement order positions of all the non-specific user information fields of the trigger frame.

17. A method according to any of claims 1-16, wherein the trigger frame further comprises information indicating that a station of the L stations acknowledges a clear to send, CTS, frame.

18. The method of any one of claims 1-17, wherein the trigger frame is a MU-RTS trigger frame.

19. The method of any one of claims 1-18, wherein the radio frame comprises one of a management frame, a single user physical layer protocol data unit (SU PPDU), or a non-triggered physical layer protocol data unit (non-TB PPDU).

20. A method of time allocation, comprising:

the method comprises the steps that a station acquires a trigger frame, wherein the trigger frame is used for allocating transmission time in transmission opportunity (TXOP) to L stations so as to transmit a wireless frame, the trigger frame comprises a public information field and at least one user information field, and L is an integer larger than or equal to 1; wherein,

the public information field carries first information, and the first information is used for indicating the first transmission time;

the user information field carries second information, and the second information is used for configuring the transmission time allocated to the site in the L sites corresponding to the user information field in the first transmission time.

21. The method of claim 20, wherein the first information is an uplink length subfield in the common information field.

22. A method according to claim 20 or 21, wherein said user information field has a correspondence with a station of said L stations, said correspondence being indicated by an association identifier subfield in said user information field.

23. The method according to any of claims 20-22, wherein the first transmission time starts at a time when a station of the L stations starts to transmit the radio frame; or,

the first transmission time starts from a time when a first site of the L sites starts to transmit the radio frame, and an arrangement order position of the user information field corresponding to the first site in all non-specific user information fields of the trigger frame is a first one.

24. A method according to any of claims 20-23, wherein the transmission times of each of said L stations are allocated in turn according to location information;

the location information is used to indicate the arrangement sequence location of the user information field corresponding to each of the L sites in all non-special user information fields of the trigger frame.

25. The method according to any of claims 20-24, wherein the second information is N reserved bits of information in the user information field, and a value of N is an integer greater than or equal to 1.

26. The method of claim 25, wherein the transmission time of each of the L stations is determined by the first transmission time, a parameter value indicated by the second information, third information, and fourth information;

the third information is used for indicating the arrangement sequence positions of the user information fields corresponding to the stations in all non-specific user information fields of the trigger frame;

the fourth information is used for indicating whether an inter-frame space exists between the radio frames transmitted by the stations.

27. The method of claim 25, wherein the transmission time of each of the L stations is determined by time unit information, a parameter value indicated by the second information, the third information, and the fourth information;

the time unit information is determined by the first transmission time and a preset parameter, and the value of the preset parameter is greater than or equal to the value of the N.

28. The method of any of claims 20-27, wherein the L stations include a second station and a third station, the second station transmits the radio frame in a sequence before the third station transmits the radio frame, and the sequence of the user information fields corresponding to the second station in all of the non-special user information fields of the trigger frame is one before the third station;

if the receiver address RA of the wireless frame transmitted by the second station is not the MAC address of the third station, the RA of the wireless frame transmitted by the third station is not the MAC address of the second station, and the carrier sense required subfield in the common information field is no, the interframe space does not exist between the wireless frame transmitted by the second station and the wireless frame transmitted by the third station.

29. The method according to any of claims 20-28, wherein the L stations include a fourth station and a fifth station, and an arrangement order position of the user information field corresponding to the fourth station in all non-special user information fields of the trigger frame is a previous position of the fifth station;

if the parameter value indicated by the second information corresponding to the fifth station is 0, the transmission time allocated to the fifth station and the transmission time allocated to the fourth station are the same time period in which they overlap.

30. The method of claim 29, wherein the resource units allocated to the fifth site are different from the resource units allocated to the fourth site.

31. A method according to any one of claims 20 to 30, wherein the L sites comprise a first site group;

the transmission time allocated to all stations in the first station group is the same overlapping time period, and the arrangement sequence position of the user information fields corresponding to all stations in the first station group in all non-special user information fields of the trigger frame is not the last one;

stations in the first station group discard the amount of symbols in the radio frame that are not completely transmitted in the same overlapping time period.

32. The method of any one of claims 20-31, wherein the L sites comprise a second site group;

the transmission time allocated to each of all stations in the second station group is the same overlapping time period, and the arrangement order position of the user information field corresponding to one station in the second station group in all the non-special user information fields of the trigger frame is the last one;

the overlapping same time period occupies the remaining duration of the first transmission time.

33. A method according to any one of claims 20 to 32, wherein a sixth station of said L stations discards the amount of symbols in said radio frame that are not completely transmitted in the transmission time allocated to said sixth station during said first transmission time;

and the arrangement sequence position of the user information field corresponding to the sixth station in all the non-special user information fields of the trigger frame is not the last one.

34. A method according to any one of claims 20 to 33, wherein the transmission time allocated to a seventh one of the L stations during the first transmission time runs out of the remaining duration of the first transmission time;

the order position of the user information field corresponding to the seventh station in all the non-specific user information fields of the trigger frame is the last one.

35. The method according to any of claims 20-34, wherein if said radio frame transmitted by an eighth site of said L sites is insufficient to use up the transmission time allocated to said eighth site within said first transmission time, padding data is added to said radio frame transmitted by said eighth site;

the user information field corresponding to the eighth site is any one of the arrangement order positions of all the non-specific user information fields of the trigger frame.

36. A method according to any of claims 20-35, wherein the trigger frame further comprises information indicating that a station of the L stations acknowledges a clear to send, CTS, frame.

37. The method according to any of claims 20-36, wherein the trigger frame is a MU-RTS trigger frame.

38. The method of any of claims 20-37, wherein the radio frame comprises one of a single user physical layer protocol data unit (SU PPDU) or a non-triggered physical layer protocol data unit (non-TB PPDU).

39. A time allocation apparatus, characterized in that the apparatus comprises a processing unit and a communication unit, the processing unit being configured to:

sending a trigger frame through the communication unit, wherein the trigger frame is used for allocating transmission time in a transmission opportunity (TXOP) to L sites to transmit a wireless frame, the trigger frame comprises a public information field and at least one user information field, and the value of L is an integer greater than or equal to 1; wherein,

the public information field carries first information, and the first information is used for indicating the first transmission time;

the user information field carries second information, and the second information is used for configuring the transmission time allocated to the station in the L stations corresponding to the user information field in the first transmission time.

40. A time distribution apparatus, characterized in that the apparatus comprises a processing unit and a communication unit, the processing unit is configured to:

acquiring a trigger frame through the communication unit, wherein the trigger frame is used for allocating transmission time in transmission opportunity (TXOP) to L sites to transmit a wireless frame, the trigger frame comprises a public information field and at least one user information field, and L is an integer greater than or equal to 1; wherein,

the public information field carries first information, and the first information is used for indicating the first transmission time;

the user information field carries second information, and the second information is used for configuring the transmission time allocated to the station in the L stations corresponding to the user information field in the first transmission time.

41. An access point, wherein the network device is a first network device comprising a processor, a memory, a communication interface, and one or more programs stored in the memory and configured to be executed by the processor, the programs comprising instructions for performing the steps in the method of any of claims 1-19.

42. A station comprising a processor, a memory, a communication interface, and one or more programs stored in the memory and configured to be executed by the processor, the programs comprising instructions for performing the steps of the method of any of claims 20-38.

43. A computer-readable storage medium, characterized in that it stores a computer program for electronic data exchange, wherein the computer program causes a computer to perform the method according to any one of claims 1-38.

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