CN115226241A

CN115226241A - Wireless communication method and device, station and access point

Info

Publication number: CN115226241A
Application number: CN202110440183.9A
Authority: CN
Inventors: 顾祥新
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2021-04-21
Filing date: 2021-04-21
Publication date: 2022-10-21
Also published as: WO2022222488A1

Abstract

The embodiment of the application discloses a wireless communication method and device, a station and an access point; the method comprises the following steps: an access point sends a first type trigger frame to a site, wherein the first type trigger frame is used for triggering Orthogonal Frequency Division Multiple Access (OFDMA) -based uplink random access (UORA) of the first type site and a second type site; a station acquires a first type of trigger frame from an access point; the station sends a second type of physical layer protocol data unit to the access point through the UORA; the access point obtains a second type of physical layer protocol data unit from the station. Because the station is the first type station, the first type station selects to send the PPDU of the second type, thereby being beneficial to avoiding collision with data sent by the second type station. In addition, the resources carrying the second type of PPDU sent by the first type of station and the resources carrying the second type of PPDU sent by the second type of station do not need to be isolated, so that the resource utilization rate is favorably improved.

Description

Wireless communication method and device, station and access point

Technical Field

The present application relates to the field of communications technologies, and in particular, to a wireless communication method and apparatus, a station, and an access point.

Background

The Institute of Electrical and Electronics Engineers (IEEE) organization is evolving and developing IEEE802.11 series of protocol standards for Wireless Local Access Networks (WLANs). Among them, IEEE802.11ax can be called High Efficiency (HE), and Orthogonal Frequency Division Multiple Access (OFDMA) technology has been introduced, and OFDMA technology can support an access point class station (AP STA, also referred to as AP) to simultaneously perform uplink data transmission with a plurality of non-access point class stations (non-AP STA). Meanwhile, an uplink OFDMA-based random access (UORA) mechanism is also introduced into ieee802.11ax, so as to solve the problems that Resource Unit (RU) setting is inflexible, a large number of users collide seriously when periodic real-time services compete freely, the power of non-AP STAs is lower than that of APs and cannot be associated, and the like, which exist in the uplink random access process.

Currently, IEEE is making the next generation of WLAN communication standards, such as IEEE802.11 be. Among them, IEEE802.11be can be called very high throughput (EHT), which will significantly improve the peak throughput and transmission rate. Because backward compatibility is required between WLAN communication standards, when the next-generation WLAN communication standard such as IEEE802.11be is compatible with IEEE802.11ax, an AP in a basic service set may perform uplink data transmission with a non-AP STA (e.g., a non-AP EHT STA) supporting the next-generation WLAN communication standard, or may perform uplink data transmission with a non-AP STA (e.g., a non-AP HE STA) supporting IEEE802.11ax at the same time. It can be seen that there may be a problem of data collision on a channel where uplink data transmission is performed simultaneously.

Disclosure of Invention

The embodiment of the application provides a wireless communication method and device, a station and an access point, so as to expect to avoid data collision and improve the resource utilization rate.

In a first aspect, an embodiment of the present application provides a wireless communication method, including:

a station acquires a first type trigger frame, wherein the first type trigger frame is used for triggering Orthogonal Frequency Division Multiple Access (OFDMA) -based uplink random access (UORA) of a first type station and a second type station, and the station is the first type station;

and the station sends a physical layer protocol data unit (PPDU) of a second type through the UORA.

In a second aspect, an embodiment of the present application provides a wireless communication method, including:

an access point sends a first type trigger frame, wherein the first type trigger frame is used for triggering Orthogonal Frequency Division Multiple Access (OFDMA) -based uplink random access (UORA) of a first type station and a second type station, and the access point is a first type access point;

the access point obtains a physical layer protocol data unit (PPDU) of a second type.

In a third aspect, an embodiment of the present application provides a wireless communication apparatus, where the apparatus includes a processing unit and a communication unit, where the processing unit is configured to:

acquiring a first type of trigger frame through the communication unit, wherein the first type of trigger frame is used for triggering orthogonal frequency division multiple access uplink random access UORA of a first type station and a second type station;

transmitting a physical layer protocol data unit (PPDU) of a second type through the communication unit and the UORA.

In a fourth aspect, an embodiment of the present application provides a wireless communication apparatus, where the apparatus includes a processing unit and a communication unit, where the processing unit is configured to:

sending a first type of trigger frame through the communication unit, wherein the first type of trigger frame is used for triggering orthogonal frequency division multiple access uplink random access UORA of a first type station and a second type station;

and acquiring a physical layer protocol data unit (PPDU) of a second type through the communication unit.

In a fifth aspect, embodiments of the present application provide a station comprising 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 to be executed by the processor, and the one or more programs include instructions for performing the steps in the first aspect of the embodiments of the present application.

In a sixth aspect, embodiments of the present application provide an access point, comprising 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 to be executed by the processor, the one or more programs including instructions for performing the steps in the second aspect of embodiments of the present application.

In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program makes a computer perform part or all of the steps as described in the first aspect or the second aspect of the embodiment of the present application.

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

It can be seen that, in this embodiment of the present application, an access point sends a first type trigger frame to a station, where the first type trigger frame is used to trigger UORAs of a first type station and a second type station; the station acquires the first type trigger frame from the access point and sends the second type PPDU through UORA. Since the station is a first type station, and the first type station and the second type station both need to use PPDUs of respective types to respond to the first type trigger frame, and the second type station generally uses PPDUs of the second type to respond to the first type trigger frame, the first type station of the embodiment of the present application selects to send PPDUs of the second type in order to avoid collision between PPDUs sent by the first type station and PPDUs sent by the second type station. Although the first type station and the second type station transmit the same PPDU of the second type, the access point may successfully receive, which is advantageous for avoiding data collision. In addition, because the first type station and the second type station send the same second type PPDU, it is not necessary to isolate the resource carrying the second type PPDU sent by the first type station from the resource carrying the second type PPDU sent by the second type station, which is beneficial to improving the resource utilization rate.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

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

fig. 2 is a schematic flowchart of a UORA process provided in an embodiment of the present application;

fig. 3 is a flowchart illustrating a wireless communication method according to an embodiment of the present application;

fig. 4 is a block diagram illustrating functional units of a wireless communication apparatus according to an embodiment of the present disclosure;

fig. 5 is a block diagram of functional units of another wireless communication apparatus provided in the embodiments of the present application;

fig. 6 is a schematic structural diagram of a station provided in an embodiment of the present application;

fig. 7 is a schematic structural diagram of an access point according to an embodiment of the present application.

Detailed Description

In order to better understand the technical solutions of the present application for those skilled in the art, the technical solutions in the embodiments of the present application are described below with reference to the drawings in the embodiments of the present application. It should be apparent that the embodiments described are some, but not all embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art without making any creative effort with respect to the embodiments in the present application belong to the protection scope of the present application.

The terms "first," "second," and the like in the description and claims of the present application and in the foregoing drawings are used for distinguishing between different objects and not for describing a particular sequential 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 apparatus that comprises a list of steps or elements is not limited to those listed but may include other steps or elements not listed or inherent to such process, method, product, or apparatus.

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 application. The appearances of the 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 explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

It should be noted that "connection" in the embodiments of the present application refers to various connection methods such as direct connection or indirect connection, so as to implement communication between devices, and is not limited in any way. In the embodiments of the present application, the expression "network" and "system" refers to the same concept, and a communication system is a communication network.

The embodiment of the application can be applied to a Wireless Local Area Network (WLAN). Currently, the protocol standard adopted by WLANs is the IEEE802.11 family. The WLAN may include a plurality of Basic Service Sets (BSSs), and devices in the BSS may include access point (AP STA) stations and non-access point (non-AP STA) stations. In addition, each basic service set may include one AP and at least one non-AP STA.

In particular, an access point class station (AP) may be an entity that provides network access to non-AP STAs connected thereto via a wireless medium. An AP may be referred to as a wireless access point or hotspot, etc. The AP may access the ethernet for each wireless network client. The AP may be a network device of a Wireless Fidelity (WiFi) chip. The AP may be a device that supports the IEEE802.11 communication standard. For example, the AP may support devices of IEEE802.11 ac, IEEE802.11 n, IEEE802.11 g, IEEE802.11b, IEEE802.11ax, IEEE802.11be, a next generation WLAN communication standard, and so forth. The AP may include a centralized controller, a Base Station (BS), a Base Transceiver Station (BTS), or a site controller, etc.

Further, the AP may include a device, such as a system on chip, having a function of providing wireless communication for a non-access point class station (non-AP STA). The chip system may include a chip, and may further include other discrete devices, such as a transceiver device.

Further, the AP may communicate with an Internet Protocol (IP) network. Such as the internet (internet), a private IP network, or other data network, etc.

Specifically, the non-access point class station (non-AP STA) may be a wireless communication chip, a wireless sensor, or a wireless communication terminal. For example, a User Equipment (UE) supporting Wi-Fi communication functions, a remote/remote terminal (remote UE), an access terminal, a subscriber unit, a subscriber station, a mobile device, a user terminal, a smart terminal, a wireless communication device, a user agent or user equipment/cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device, a vehicle-mounted device, a wearable device, and the like, which are not particularly limited. Note that, in the embodiments of the present application, the non-AP STA is collectively referred to as a Station (STA).

Further, the non-AP STA may include a non-access point enhanced high throughput station (non-AP EHT STA), a non-access point high efficiency station (non-AP high throughput station), and the like.

Further, the non-AP STA may include a device having a transceiving function, such as a system on chip. The chip system may include a chip, and may further include other discrete devices, such as a transceiver device.

Currently, IEEE is making the next generation of WLAN communication standards, such as IEEE802.11 be. Among them, IEEE802.11be may be referred to as Extra High Throughput (EHT), which will significantly improve peak throughput and transmission rate. Because backward compatibility is required between WLAN communication standards, when the next-generation WLAN communication standard such as IEEE802.11be is compatible with IEEE802.11ax, an AP in a basic service set may perform uplink data transmission with a non-AP STA (e.g., a non-AP EHT STA) supporting the next-generation WLAN communication standard, or may perform uplink data transmission with a non-AP STA (e.g., a non-AP HE STA) supporting IEEE802.11ax at the same time.

In conjunction with the above description, the following embodiments of the present application provide an exemplary illustration of a wireless communication system in which an AP in a basic service set supports both non-AP EHT STAs and non-AP HE STAs.

For an exemplary wireless communication system according to an embodiment of the present application, please refer to fig. 1. Wireless communication system 10 may include an access point 110, a station 120, and a station 130. Where station 120 may be a non-AP EHT STA, station 130 may be a non-AP HE STA, and access point 110 may provide communication coverage for a particular geographic area and may communicate with

stations

120 and 130 located within communication coverage.

Optionally, the wireless communication system 10 may further include a plurality of access points, and each access point may include a certain number of stations within a communication coverage area, which is not particularly limited.

Optionally, the wireless communication system 10 may further include other network entities such as a Radio Access Network (RAN) device, a Core Network (CN) device, a network controller, a mobility management entity, and the like, which is not limited in this respect.

Alternatively, 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 particularly limited.

Before the embodiments of the present application provide detailed descriptions of wireless communication methods, relevant contents related to the embodiments of the present application are described again.

1. Primary channel (primary channel) and secondary channel (secondary channel)

In WLAN communications, channels are typically divided into primary and secondary channels, where a secondary channel may contain one or more subchannels.

For example, if the WLAN is divided by using 20MHz as the basic bandwidth unit, when the channel bandwidth is 20MHz, only one main channel with a bandwidth of 20MHz is provided; when the channel bandwidth is larger than 20MHz, a channel with the bandwidth of 20MHz is a main channel, and the rest at least one 20MHz channel is a slave channel.

For another example, if the channel bandwidth is 320MHz, the 320MHz channel includes a primary 160MHz channel (primary 160MHz channel) and a secondary 160MHz channel (secondary 160MHz channel). The 320MHz channels are then numbered sequentially as channel 1 through channel 16, with each index representing a 20MHz channel. Wherein, the channel 1 represents a primary 20MHz channel (P20 for short). Channel 2 represents a secondary 20MHz channel (S20). An auxiliary 40MHz channel (S40 for short) includes two subchannels with a bandwidth of 20MHz, which are channel 3 and channel 4, respectively. An auxiliary 80MHz channel (S80 for short) includes four sub-channels with a bandwidth of 20MHz, which are respectively a channel 5, a channel 6, a channel 7, and a channel 8, where the channel 5 and the channel 6, the channel 6 and the channel 7, and the channel 7 and the channel 8 are respectively adjacent. One primary 160MHz channel comprises channels 1 through 8 and one secondary 160MHz channel comprises channels 9 through 16. It is understood that a slave 160MHz channel means that the slave channel has a bandwidth of 160MHz, and a master 160MHz channel means that the master channel has a bandwidth of 160MHz.

2. Trigger frame

The trigger frame belongs to a Medium Access Control (MAC) frame, and may include at least one of a frame control (frame control) field, a duration (duration) field, a Receiver Address (RA) field, a Transmitter Address (TA) field, a common information (common information) field, a user information (user information) field, a padding field, and a Frame Check Sequence (FCS) field.

It should be noted that different IEEE802.11 communication standards may have different specifications for the fields carried by the trigger frame. For example, the first type of trigger frame of the embodiments of the present application may be different from the trigger frame in IEEE802.11 ax.

The RA field may indicate a receiver address of the trigger frame. When the trigger frame triggers uplink and downlink transmission of a station, the RA field may indicate a MAC address of the corresponding station. The RA field may indicate a broadcast address when a trigger frame triggers uplink and downlink transmission by a plurality of stations.

The TA field may indicate the transmitter address of the trigger frame. The TA field may indicate a MAC address of the AP transmitting the trigger frame when the AP transmitting the trigger frame does not use multiple BSSIDs.

The common information field may indicate information required for at least one station triggered by the trigger frame to transmit a response to the trigger frame.

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

The user information field may indicate a station triggered by the trigger frame. Specifically, when the user information field includes an Association Identifier (AID) of a station or a part of the AID, the station to which the AID corresponds may be a station triggered by the trigger frame. For example, the AID12 subfield in the user information field may indicate 12 Least Significant Bits (LSBs) of AIDs of stations triggered by the trigger frame.

The user information field may indicate an RU allocated to a station triggered by the trigger frame. An RU may indicate multiple subcarriers for uplink and downlink transmissions. In addition, the RU allocation subfield in the user information field may indicate a starting RU of the one or more consecutive RUs allocated by the user information field.

The padding field may include padding bits. The padding field may be used to ensure that a station transmitting a response frame to the trigger frame is ready for transmission of the response frame. Accordingly, the length of the padding field may be determined according to the capability of a station transmitting a response frame for the trigger frame. In addition, the trigger frame may not include a padding field.

The AP may use the trigger frame to trigger the station for uplink transmission. Specifically, the AP may trigger random access to a specified RU. For example, the AP may set the AID12 subfield of the user information field in the trigger frame to a predetermined value. When the user information field in the trigger frame indicates the AID of a predetermined value, a station receiving the trigger frame can randomly access an RU indicated by the corresponding user information field. Wherein the predetermined value may be 0 or 2045.

3. Based on orthogonal frequency division multiple Access (orthogonal OFDMA-based random Access (UORA) mechanism

In some scenarios, there may be problems with an access point communicating with multiple stations. For example, the access point may be 10dB or more higher than the station, which may cause the station to hear the beacon frame transmitted by the access point, but may not be able to associate with the access point. Or, for aperiodic real-time services, the overhead of round-robin scheduling is large, and a large number of STAs collide seriously when in free competition. Alternatively, since a station only supports one Resource Unit (RU), and the RU configuration is not particularly flexible, this will cause a problem that the RU is not allocated well in the scheduling process. Therefore, to solve the problem of the above scenario, IEEE802.11ax introduced UORA.

4. Random access based on UORA

It should be noted that the access point may send a trigger frame for random access, where the AID12 subfield of the user information field in the trigger frame is set to 0 to indicate that one or more available (identity) RA-RUs are used by its associated non-AP STA, and the AID12 subfield of the user information field in the trigger frame is set to 2045 to indicate that one or more available RA-RUs are used by its unassociated non-AP STA.

Wherein the available RA-RU is an RA-RU in which the non-AP STA supports all transmission parameters indicated in the common information field and the user information field and can be used to carry the HE TB PPDU, and at least one of the following conditions should be satisfied:

the non-AP STA may be an STA not associated with the AP, and the AID12 subfield value of the user information field corresponding to the RA-RU is set to 2045;

the non-AP STA may be an STA associated with an AP, and the AID12 subfield value of the user information field corresponding to the RA-RU is set to 0.

Specifically, prior to receiving a trigger frame from an access point, a station may randomly select an integer value in a uniform distribution of a range of values of an OFDMA Contention Window (OCW). The value of OCW ranges from 0 to OCW, and the OCW value can be greater than or equal to the minimum OCW value (OCWmin) and less than or equal to the maximum OCW value (OCWmax). The station sets the selected integer value to a value of an OFDMA random access backoff (OBO) counter.

Specifically, the station may receive a trigger frame from the access point and decrement the value of the OBO counter based on the number of RUs in available RA-RUs allocated for random access by the trigger frame. When the value of the OBO counter is decremented to 0, the station may randomly select one RU from the allocated RU set, and attempt to transmit uplink data through the selected RU. Wherein the station may determine whether the selected RU is idle by physical carrier sensing or virtual carrier sensing. If the RU is idle, the station may transmit uplink data through the RU; if the RU is busy (busy), the station may not transmit uplink data on the RU, and the station shall set the OBO counter value to an integer value randomly selected from a uniform distribution within 0 to the OCW value again.

Specifically, the access point may set OCWmin and OCWmax by transmitting a UORA parameter set element (UORA parameter set element) to the station through a management frame such as a beacon frame or a probe response frame. In addition, when a station first attempts random access, the station may receive the UORA parameter set element from the access point, or the station may successfully transmit through random access, which may allow the station to initiate the OBO procedure. Wherein the OBO initialization may include at least one of initialization of an OBO counter and initialization of an OCW value. In addition, when a station initializes the OCW value, the station may set the OCW value to OCWmin or a default value. When the transmission of the random access of the station fails, the station may update the OCW value to (2 × OCW value + 1), thereby updating the value range of the OCW. And then, the site randomly selects an integer value in the uniform distribution of the updated OCW value range, and then sets the integer value as the value of the OBO counter, thereby updating the value of the OBO counter. In addition, when the OCW value reaches OCWmax, the station continues to maintain the OCW value at OCWmax even if transmission of random access by the station fails.

Specifically, if carrier sensing is required and the selected RU is busy, the non-AP STA will not send the HE TB PPDU, and the non-AP STA should set the value of its OBO counter to an integer randomly selected from a uniform distribution within the range from 0 to the OCW value.

Specifically, if the non-AP STA transmits the HE TB PPDU in the RA-RU but does not receive a response (ACK) from the AP for the HE TB PPDU, the transmission is considered unsuccessful. Otherwise, the transmission is deemed successful. After successful transmission of the HE TB PPDU in the RA-RU, the non-AP HE STA needs to set the OCW value to the latest OCWmin or default value indicated from the UORA parameter set element of the AP (if the UORA parameter set element is not received) and initialize its OBO counter to an integer value randomly selected from a uniform distribution within 0 to the OCW value.

5. Examples of UORA procedures

Referring to fig. 2, fig. 2 is a schematic flowchart of a UORA process provided in the present application.

Before the AP sends trigger frame 1:

the value of the initial OBO counter of the first station (STA 1) is 3, the value of the initial OBO counter of the second station (STA 2) is 5, the value of the initial OBO counter of the third station (STA 3) is 4, and the value of the initial OBO counter of the fourth station (STA 4) is 2.

After receiving trigger frame 1:

trigger frame 1 allocates three available RA-RUs, RU1, RU2, and RU3, for the AP-associated station. Meanwhile, trigger frame 1 allocates two available RA-TUs, RU4 and RU5, to the AP-non-associated station.

The fourth station is associated with the AP and a dedicated RU (RU 6) is allocated to the fourth station that needs to perform uplink data transmission with the AP. Thus, the fourth station does not contend for available RA-RUs, but transmits the uplink data on RU 6.

The first station is associated with the AP and needs to perform uplink data transmission with the AP. Thus, the first station decrements the value of its initial OBO counter (i.e., 3) by the number of available RA-RUs indicated (or allocated) in trigger frame 1 (i.e., the RA-RUs of the three associated stations). Since the OBO counter of the first station is decremented to 0 (i.e., 3 minus 3), the first station will transmit the upstream data on RU 2. Wherein RU2 is randomly selected from among available RA-RUs (i.e., RU1, RU2, and RU 3).

The second station is associated with the AP and needs to perform uplink data transmission with the AP. Thus, the second station decrements its initial OBO counter value (i.e., 5) by the number of available RA-RUs indicated (or allocated) in trigger frame 1 (i.e., the RA-RUs of the three associated stations). Since the value of the OBO counter of the second station is decremented to a non-zero value (i.e., 5 minus 3), the second station will maintain the value of the new OBO counter (i.e., 2) until receiving a subsequent trigger frame carrying the RA-RU of the associated station.

The third station is not associated with the AP, and the third station needs to perform uplink data transmission with the AP. Thus, the third station decrements its initial OBO counter value (i.e., 4) by the number of available RA-RUs (i.e., RA-RUs of two unassociated stations) indicated (or allocated) in trigger frame 1. Since the value of the OBO counter of the third station is decremented to a non-zero value (i.e., 4 minus 2), the third station will maintain the value of the new OBO counter (i.e., 2) until a subsequent trigger frame carrying the RA-RUs of the non-associated station is received.

After transmitting the HE TB PPDU in response to trigger frame 1:

the fourth station needs to continue uplink data transmission with the AP. Thus, the fourth station maintains its initial value of the OBO counter (i.e., 2) until receiving a subsequent trigger frame carrying the RA-RU of the associated station.

The first station needs to continue uplink data transmission with the AP. Thus, the first station randomly selects a new value of the OBO counter (i.e. 4).

After receiving trigger frame 2:

the first station is associated with the AP and needs to perform uplink data transmission with the AP. Thus, the first station decrements the value of its new OBO counter (i.e., 4) by the number of available RA-RUs indicated (or allocated) in trigger frame 2 (i.e., the RA-RUs of the two associated stations). Since the value of the OBO counter of the first station is decremented to a non-zero value (i.e., 4 minus 2), the first station will maintain the value of the new OBO counter (i.e., 2) until a subsequent trigger frame carrying the RA-RUs of the non-associated station is received.

The second station is associated with the AP and needs to transmit uplink data with the AP. Thus, the second station decrements the value of its maintained OBO counter (i.e., 2) by the number of available RA-RUs (i.e., RA-RUs for both associated stations) indicated (or allocated) in trigger frame 2. Since the value of the OBO counter of the second station is decremented to 0 (i.e., 2 minus 2), the second station will transmit uplink data on RU 2. Wherein RU2 is randomly selected from available RA-RUs (i.e., RU1 and RU 2).

The third station is not associated with the AP and needs to perform uplink data transmission with the AP. Thus, the third station decrements the value of its maintained OBO counter (i.e., 2) by the number of available RA-RUs indicated (or allocated) in trigger frame 2 (i.e., the RA-RUs of the two unassociated stations). Since the OBO counter of the third station decrements to 0 (i.e., 2 minus 2), the third station will randomly select one RA-RU of the RUs 3 and RU4 for uplink data transmission.

The fourth station is associated with the AP and needs to perform uplink data transmission with the AP. Thus, the fourth station decrements its OBO counter value (i.e., 2) by the number of available RA-RUs (i.e., RA-RUs for both associated stations) indicated (or allocated) in trigger frame 2. Since the OBO counter of the fourth station decrements to 0 (i.e. 2 minus 2), the fourth station will transmit uplink data on RU 1. Wherein RU1 is randomly selected from available RA-RUs (i.e., RU1 and RU 2).

In conjunction with the above description, an embodiment of the present application provides a flow chart of a wireless communication method, please refer to fig. 3, the method includes:

s310, the access point sends a first type trigger frame to the station, and the first type trigger frame is used for triggering orthogonal frequency division multiple access uplink random access UORA of the first type station and the second type station.

Wherein the access point may be a first type of access point.

It should be noted that, since the access point in the embodiment of the present application is the first type access point, the access point may send the first type trigger frame.

Specifically, the first type of access point may be an extra high throughput access point station (EHT AP STA); alternatively, the first type of access point may be a Wi-Fi7 access point or a Wi-Fi8 access point; alternatively, the first type of access point may be a non-Wi-Fi 6 access point.

It should be noted that an access point in IEEE802.11ax is generally referred to as a high efficiency AP station (HE AP STA) or a Wi-Fi6 access point, and an access point in the next generation WLAN communication standard such as IEEE802.11be may be referred to as an EHT AP STA, a Wi-Fi7 access point, a Wi-Fi8 access point, a non-Wi-Fi 6 access point, or the like. Meanwhile, the first type access point of the embodiment of the application has a communication function different from that of an HE AP STA or a Wi-Fi6 access point.

Specifically, the first type trigger frame may be a trigger frame in a next generation WLAN communication standard such as IEEE802.11 be. The first type trigger frame may be an extra high throughput trigger frame (EHT TF).

It should be noted that the trigger frame in IEEE802.11ax is generally called a High Efficiency (HE) trigger frame (HE TF), and the trigger frame in the next-generation WLAN communication standard such as IEEE802.11be may be called an EHT TF. The fields carried by the EHT TF (e.g., the user information field, the common information field, etc., as described above) may be different from the fields carried by the HE TF. Thus, the HE TF may be used to trigger UORA in a different manner than the EHT TF. Based on this, the embodiments of the present application require further research on EHT TF.

Specifically, the first type trigger frame may include information of a random access resource unit, RA-RU, set, the RU set corresponding to a dedicated association identifier, AID, and the dedicated AID may be used to indicate that the RA-RU corresponding to the dedicated AID is used for random access by the first type station and the second type station associated with the access point or not associated with the access point.

Wherein, the RA-RUs in the RA-RU set (RA-RU sets) may be an available random access resource unit (RA-RU). Note that the RA-RU may be an RU indicated (or allocated) in the trigger frame to support the UORA procedure.

Wherein the first type station may be a non-access point very high throughput station (non-AP EHT STA); the second type of station may be a non-access point high efficiency station (non-AP HE STA).

Wherein the RA-RU set may include at least one of: 26 tone RU (26-tone RU), 52 tone RU (52-tone RU), 106 tone RU (106-tone RU), 242 tone RU (242-tone RU), 484 tone RU (484-tone RU), 996 tone RU (996-tone RU), 2 × 996 tone RU (2 × 996-tone RU). It is to be appreciated that a station can perform uplink data transmissions using at least one of 26 tone RU, 52 tone RU, 106 tone RU, 242 tone RU, 484 tone RU, 996 tone RU, 2 × 996 tone RU.

It should be noted that, since backward compatibility is required between WLAN communication standards, when a next-generation WLAN communication standard such as IEEE802.11be is compatible with IEEE802.11ax, the access point of the embodiment of the present application may perform uplink data transmission with a first type station (e.g., non-AP EHT STA) supporting the next-generation WLAN communication standard such as IEEE802.11be, or may perform uplink data transmission with a second type station (e.g., non-AP HE STA) supporting IEEE802.11ax at the same time. Based on the method, the access point can allocate the RUs for the access at any time to the first type station and the second type station through the first type trigger frame, so that the resource configuration or scheduling of the first type station and the second type station is realized through the first type trigger frame. In addition, since the RU for the uplink random access of the first type station and the RU for the uplink random access of the second type station do not need to be isolated in the frequency domain, it is advantageous to improve the resource utilization efficiency.

It is further noted that the RA-RU set allocated by the first type trigger frame may correspond to a special Association Identifier (AID), which may be represented by AID12 subfield of a user information field in the first type trigger frame. Wherein if the AID12 subfield is set to 0 to indicate at least one available RA-RU, the RA-RU is used for random access by the first type station and the second type station associated with the access point; if the AID12 subfield is set to 2045 to indicate at least one available RA-RU, the RA-RU is used for random access by the first type station and the second type station that the access point is not associated with.

S320, the station acquires the first type of trigger frame from the access point.

Wherein the site may be a first type site.

In particular, a first type of site may be compatible with a second type of site.

It should be noted that, since backward compatibility is required between WLAN communication standards, a first type station of a next-generation WLAN communication standard such as ieee802.11be may be compatible with a second type station of IEEE802.11 ax.

Specifically, the first type station may be a non-AP STA of the next-generation WLAN communication standard such as ieee802.11be. Wherein the first type station may be a non-access point very high throughput station (non-AP EHT STA).

S330, the station sends the physical layer protocol data unit of the second type to the access point through the UORA.

S340, the access point acquires the second type physical layer protocol data unit from the station.

Specifically, the second type of physical layer protocol data unit may be a high-efficiency trigger-based physical layer protocol data unit (HE tri-based PHY protocol data unit, HE TB PPDU).

It should be noted that the first type station typically uses the PPDU of the first type to respond to the trigger frame of the first type, and the second type station typically uses the PPDU of the second type to respond to the trigger frame of the first type. The first type of PPDU may be a PPDU in a next generation WLAN communication standard such as IEEE802.11be, for example, an EHT trigger-based PHY protocol data unit (EHTTB PPDU) triggered based on very high throughput. In addition, since the first type station may be compatible with the second type station, the first type station may also respond to the first type trigger frame using the second type PPDU.

It should be further noted that, since backward compatibility is required between WLAN communication standards, there is a problem that a first type station of next-generation WLAN communication standard such as ieee802.11be and a second type station of IEEE802.11ax may collide with data on a channel for simultaneous uplink data transmission.

Ext> forext> exampleext>,ext> whenext> theext> RUext> selectedext> byext> eachext> ofext> theext> nonext> -ext> APext> HEext> STAext> andext> theext> nonext> -ext> APext> EHText> STAext> isext> atext> theext> sameext> 20ext> Mhzext>,ext> theext> legacyext> shortext> trainingext> fieldext> (ext> Lext> -ext> STFext>)ext> /ext> legacyext> longext> trainingext> fieldext> (ext> Lext> -ext> LTFext>)ext> /ext> legacyext> signalingext> fieldext> (ext> Lext> -ext> SIGext>)ext> /ext> repeatedext> legacyext> signalingext> fieldext> (ext> RLext> -ext> SIGext>)ext> /ext> highext> efficiencyext> signalingext> fieldext> aext> (ext> HEext> -ext> signalext> -ext> aext> fieldext>,ext> HEext> -ext> SIGext> -ext> aext>)ext> inext> theext> HEext> TBext> PPDUext> transmittedext> byext> theext> nonext> -ext> APext> HEext> STAext> andext> theext> nonext> -ext> APext> EHText> STAext> areext> atext> theext> sameext> 20ext> Mhzext>,ext> resultingext> inext> dataext> collisionext> andext> failureext> ofext> theext> accessext> pointext> toext> receiveext> dataext>.ext>

Based on this, in order to solve the problem of data collision, in this embodiment of the present application, an access point sends a first type trigger frame to a station, where the first type trigger frame is used to trigger UORAs of a first type station and a second type station; the station acquires the first type trigger frame from the access point and sends the second type PPDU through UORA. Since the station is a first type station, and the first type station and the second type station both need to use PPDUs of respective types to respond to the first type trigger frame, and the second type station generally uses PPDUs of the second type to respond to the first type trigger frame, the first type station of the embodiment of the present application selects to send PPDUs of the second type in order to avoid collision between PPDUs sent by the first type station and PPDUs sent by the second type station. Although the first type station and the second type station transmit the same PPDU of the second type, the access point may successfully receive, which is advantageous for avoiding data collision. In addition, because the first type station and the second type station send the same second type PPDU, it is not necessary to isolate the resource carrying the second type PPDU sent by the first type station from the resource carrying the second type PPDU sent by the second type station, which is beneficial to improving the resource utilization rate.

In combination with the foregoing description that the access point allocates the RA-RU sets for random access to the first type station and the second type station through the first type trigger frame, the following embodiment of the present application will specifically describe how the station sends the physical layer protocol data unit of the second type through the UORA.

Specifically, sending the physical layer protocol data unit of the second type through the UORA may include: the station determines a target RU on the RA-RU set through UORA, and the target RU can comprise at least one RA-RU in the RA-RU set; the station transmits a second type of physical layer protocol data unit on the target RU.

Wherein the RA-RU set may include a target RU, which may be used to carry the second type of physical layer protocol data unit.

Wherein the target RU may include at least one RA-RU of the set of RA-RUs.

It should be noted that the station (i.e., the first type station) according to the embodiment of the present application may support at least one RA-RU to transmit uplink data (e.g., PPDU), thereby facilitating flexibility of RU allocation and scheduling. Thus, a station (i.e., a first type station) may transmit a PPDU of the second type to an access point via a UORA to select at least one RA-RU (i.e., a target RU) in the set of RA-RUs, and thereby transmit the PPDU of the second type via the target RU to enable responding to the first type trigger frame.

Further, a first field of the second type of PPDU is transmitted on a 20MHz channel corresponding to the target RU, the first field including at least one of: ext> aext> legacyext> shortext> trainingext> fieldext> Lext> -ext> STFext>,ext> aext> legacyext> longext> trainingext> fieldext> Lext> -ext> LTFext>,ext> aext> legacyext> signalingext> fieldext> Lext> -ext> SIGext>,ext> aext> repeatedext> legacyext> signalingext> fieldext> RLext> -ext> SIGext>,ext> andext> aext> highext> efficiencyext> signalingext> fieldext> HEext> -ext> SIGext> -ext> Aext>.ext>

Wherein the first field is repeated over a plurality of 20MHz channels if the first field occupies more than one 20MHz channel.

Ext> itext> isext> notedext> thatext> theext> secondext> typeext> ofext> PPDUext> mayext> beext> aext> HEext> TBext> PPDUext>,ext> andext> theext> HEext> TBext> PPDUext> generallyext> includesext> atext> leastext> oneext> ofext> aext> Lext> -ext> STFext>,ext> aext> Lext> -ext> LTFext>,ext> aext> Lext> -ext> SIGext>,ext> aext> RLext> -ext> SIGext>,ext> andext> anext> AHEext> -ext> SIGext> -ext> Aext> (ext> i.e.ext>,ext> theext> firstext> fieldext>)ext>.ext> Meanwhile, IEEE802.11 series protocols generally expand a channel for data transmission into a plurality of 20Mhz according to 20Mhz, and therefore, in order to ensure that an access point can receive a first field of a PPDU of a second type, in the embodiment of the present application, it is considered that the first field of the PPDU of the second type is sent on a 20Mhz channel corresponding to a target RU, so that the access point can be ensured to successfully receive the PPDU of the second type, and stability and robustness of WLAN communication are improved. In addition, if the first field occupies more than one 20MHz channel, the second field of the second type PPDU is repeatedly sent on multiple 20MHz channels corresponding to the target RU, so that the access point is further ensured to successfully receive the second type PPDU, and the stability and robustness of WLAN communication are improved.

Further, the target RU may be located in the primary channel or the secondary channel; alternatively, the target RU may be located on a primary channel having a frequency of 160MHz (i.e., a primary 160MHz channel).

It should be noted that in WLAN communication, a channel may be generally divided into a primary channel (primary channel) and a secondary channel (secondary channel), where the secondary channel may include one or more sub-channels. Therefore, the target RU of the embodiments of the present application may be located on the primary channel or on the secondary channel. That is, the station may transmit the second type of PPDU through an RA-RU located on a primary channel or a secondary channel allocated by the first type trigger frame.

In addition, since the non-AP HE STA does not typically transmit HE TB PPDUs on the secondary 160MHz channel and the non-AP EHT STA does not typically transmit HE TB PPDUs on the secondary 160MHz channel, the non-AP EHT STA can transmit HE TB PPDUs only when RA-RUs are allocated (or indicated) on the primary 160MHz channel and the non-AP EHT STA performs UORA. That is, the station may transmit the PPDU of the second type through the RA-RUs located on the primary 160MHz channel allocated by the trigger frame of the first type.

Further, the target RU may specifically include at least one idle RA-RU in the RA-RU set after the station performs carrier sensing.

Among them, carrier Sense (CS) may include physical carrier sensing or virtual carrier sensing. The physical carrier sensing may include Clear Channel Assessment (CCA) or Energy Detection (ED).

It should be noted that carrier sensing means that a station needs to detect whether another station is transmitting data on a channel before transmitting data, so as to avoid data collision. Therefore, the station selects a target RU from the RA-RU set through the UORA, and then determines whether the target RU is idle through the carrier monitoring, so that the data collision is avoided, and the success rate of data transmission is improved.

Further, the number of RA-RUs in the target RU may be determined by the communication capability of the station.

Wherein the communication capability of the station is related to at least one of: the number of space-time streams (NSTS) supported by a station, the number of space-time streams (MCS) supported by a station, dual Carrier Modulation (DCM) supported by a station, the length of a Guard Interval (GI) supported by a station, the type of Long Training Field (LTF) supported by a station, the space-time block code (STBC) supported by a station, the transmission power supported by a station, and the length of a padding field supported by a station. The length of the padding field may indicate the length of the padding field included in the PPDU.

It should be noted that, in the embodiment of the present application, the station may select the target RU and the number of RA-RUs in the target RU from the RA-RU set allocated by the first type trigger frame through the UORA and the communication capability of the station, so as to be beneficial to improving the success rate of uplink data transmission of the station, and further improve the stability and robustness of the WLAN network.

In conjunction with the above description, the following embodiments of the present application illustrate how a station determines a target RU on an RA-RU set through UORA.

Specifically, before the station acquires the first type trigger frame, the method further includes: obtaining the value of an OBO counter; determining a target RU on the RA-RU set by UORA may include: the station decrements the value of the OBO counter according to the number of RA-RUs in the RA-RU set; and if the value of the OBO counter is decreased to 0, the station randomly selects at least one RA-RU from the RA-RU set to determine a target RU.

It should be noted that, first, before a station (i.e., a first-type station) receives a first-type trigger frame from an access point (i.e., a first-type access point), the access point may send a UORA parameter set element to the station through a beacon frame, a probe response frame, or the like to set OCWmin and OCWmax.

Secondly, the station may randomly select an integer value in a uniform distribution of the value ranges of the OCW. Wherein, the value range of OCW is 0 to OCW value, and the OCW value can be larger than or equal to OCWmin and smaller than or equal to OCWmax. And the site sets the selected integer value as the value of the OBO counter, so that the value of the OBO counter is obtained.

Finally, the station receives a first type trigger frame from the access point and decrements the value of the OBO counter based on the number of RA-RUs in the set of RA-RUs indicated (or allocated) for random access in the first type trigger frame. When the value of the OBO counter is decremented to 0, the station may randomly select at least one RA-RU (i.e., a target RU) from the RA-RU set, and attempt to transmit uplink data (i.e., a second type PPDU) through the target RU, thereby implementing a response to the first type trigger frame through the second type PPDU. In addition, the station may also determine whether the target RU is idle by physical carrier sensing or virtual carrier sensing. If the target RU is idle, the station may transmit uplink data through the target RU; if the target RU is busy, the station will not transmit the uplink data on the target RU, and the station should set the OBO counter to a randomly selected integer value from a uniform distribution within 0 to the OCW value again.

Further, after transmitting the second type of physical layer protocol data unit on the target RU, the method may further include: and the station updates the value of the OBO counter.

It should be noted that, if a station (i.e., a first type station) successfully sends a PPDU of a second type in a target RU, that is, an access point (i.e., a first type access point) successfully accesses the PPDU of the second type or receives an acknowledgement frame (ACK) for the PPDU of the second type, the station may set an OCW value to a latest OCWmin or a default value indicated in a UORA parameter set element of the access point (if the station does not receive the UORA parameter set element), and update a value of an OBO counter of the station, that is, an integer value randomly selected from a uniform distribution of values from 0 to OCW of the station is used as a value of the OBO counter, so that the station is ensured to perform subsequent uplink data transmission through the UORA, and stability and robustness of WLAN communication are further improved.

In conjunction with the above description, the method illustrated in fig. 3 may further include: the station sends a physical layer protocol data unit of a first type over the UORA.

The PPDU of the first type may be a PPDU in a next generation WLAN communication standard such as IEEE802.11be, for example, an EHT TB PPDU.

It should be noted that, while the station (i.e., the first-type station) in the embodiment of the present application uses the PPDU of the second type to respond to the trigger frame of the first type, the station may also use the PPDU of the first type to respond to the trigger frame of the first type, so that the station (i.e., the first-type station) is ensured to support transmission of multiple PPDUs, and the communication processing capability of the station is improved.

The above description has mainly described the solution of the embodiments of the present application from the perspective of the method side. It will be appreciated that the station or access point, in order to carry out the above-described functions, may comprise corresponding hardware structures and/or software modules for performing the respective functions. Those of skill in the art will readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The functional units of the stations or the access points can be divided according to the above method examples. For example, each functional unit may be divided for each function, or two or more functions may be integrated into one processing unit. The integrated unit may be implemented in the form of hardware, or may be implemented in the form of a software program module. It should be noted that the division of the units in the embodiment of the present application is illustrative, and is only one division of the logic functions, and there may be another division in actual implementation.

Where integrated units are employed, fig. 4 provides a block diagram of the functional units of a wireless communication device. The wireless communication apparatus 400 includes: a processing unit 402 and a communication unit 403. The processing unit 402 is used for controlling and managing the actions of the station. For example, the processing unit 402 is used to support the station to perform the steps in fig. 3 and other processes for the solution described in the present application. The communication unit 403 is used to support communication between the station and other devices in the wireless communication system. The wireless communication apparatus 400 may also include a memory unit 401 for program codes executed by the wireless communication apparatus 400 and data transmitted.

It should be noted that the wireless communication device 400 may be a chip or a chip module.

The processing unit 402 may be a processor or a controller, and may be, for example, a Central Processing Unit (CPU), a general purpose processor, a Digital Signal Processor (DSP), an application-specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. Processing unit 402 may also be a combination that performs computing functions, e.g., comprising one or more microprocessors, a combination of DSPs and microprocessors, and the like. The communication unit 403 may be a communication interface, a transceiver, a transceiving circuit, etc., and the storage unit 401 may be a memory. When the processing unit 402 is a processor, the communication unit 403 is a communication interface, and the storage unit 401 is a memory, the wireless communication apparatus 400 according to the embodiment of the present application may be a station as shown in fig. 6.

In a specific implementation, the processing unit 402 is configured to perform any step performed by a station in the above method embodiment, and when performing data transmission, such as sending, the communication unit 403 may be optionally invoked to complete the corresponding operation. The details will be described below.

The processing unit 402 is configured to: acquiring a first type of trigger frame, wherein the first type of trigger frame is used for triggering orthogonal frequency division multiple access uplink random access UORA of a first type station and a second type station; the second type of physical layer protocol data unit PPDU is sent over UORA.

It should be noted that specific implementation of each operation in the embodiment shown in fig. 4 may be described in detail in the method embodiment shown in fig. 3, and is not described herein again.

In one possible example, the first type trigger frame includes information of a set of random access resource units, RA-RUs, corresponding to a dedicated association identifier, AID, indicating that the RA-RUs to which the dedicated AID corresponds is for random access by the access point associated or non-associated first type station and second type station.

In one possible example, in terms of sending the second type of physical layer protocol data unit over UORA, the processing unit 402 is specifically configured to: determining, by the UORA, a target RU on the set of RA-RUs, the target RU including at least one RA-RU in the set of RA-RUs; the physical layer protocol data unit of the second type is transmitted on the target RU.

In one possible example, the first field of the second type of physical layer protocol data unit is transmitted on a 20MHz channel corresponding to the target RU; the first field includes at least one of: ext> aext> legacyext> shortext> trainingext> fieldext> Lext> -ext> STFext>,ext> aext> legacyext> longext> trainingext> fieldext> Lext> -ext> LTFext>,ext> aext> legacyext> signalingext> fieldext> Lext> -ext> SIGext>,ext> aext> repeatedext> legacyext> signalingext> fieldext> RLext> -ext> SIGext>,ext> andext> aext> highext> efficiencyext> signalingext> fieldext> HEext> -ext> SIGext> -ext> Aext>.ext>

In one possible example, if the first field occupies more than one 20MHz channel, the first field is repeatedly transmitted on multiple 20MHz channels.

In one possible example, the target RU is located in the primary channel or the secondary channel; alternatively, the target RU is located on a primary channel with a frequency of 160MHz.

In one possible example, the target RU specifically includes at least one idle RA-RU in the RA-RU set after the station performs carrier sensing.

In one possible example, the number of RUs in the target RU is determined by the communication capabilities of the station.

In one possible example, the communication capabilities of the station are related to at least one of: the transmission bandwidth supported by the station, the number of space-time streams supported by the station, the modulation and coding scheme supported by the station, the dual carrier modulation supported by the station, the length of a guard interval supported by the station, the type of a long training field supported by the station, the space-time block coding supported by the station, the transmission power supported by the station, and the length of a padding field supported by the station.

In one possible example, prior to acquiring the first type of trigger frame, the processing unit 402 is further configured to: obtaining the value of an OBO counter;

in determining a target RU on the RA-RU set by UORA, processing unit 402 is specifically configured to: the value of the OBO counter is decreased according to the number of RA-RUs in the RA-RU set; and if the value of the OBO counter is decreased to 0, randomly selecting at least one RA-RU from the RA-RU set to determine the target RU.

In one possible example, after transmitting the second type of physical layer protocol data unit on the target RU, processing unit 402 is further to: and updating the value of the OBO counter.

In one possible example, the second type of physical layer protocol data unit is a high efficiency triggered physical layer protocol data unit, HE TB PPDU.

In one possible example, the first type of trigger frame is a very high throughput EHT trigger frame.

In one possible example, the first type of station is a non-access point very high throughput station non-AP EHT STA and the second type of station is a non-access high efficiency station non-AP HE STA.

In one possible example, the processing unit 402 is further configured to: the physical layer protocol data unit of the first type is sent over the UORA.

Where an integrated unit is employed, fig. 5 provides a block diagram of the functional units of yet another wireless communication device. The wireless communication apparatus 500 includes: a processing unit 502 and a communication unit 503. The processing unit 502 is used for controlling and managing the actions of the access point. For example, the processing unit 502 is used to support the access point to perform the steps in fig. 3 and other processes for the solutions described herein. The communication unit 503 is used to support communication between the access point and other devices in the wireless communication system. The wireless communication apparatus 500 may further include a storage unit 501 for storing program codes executed by the wireless communication apparatus 500 and transmitted data.

The wireless communication device 500 may be a chip or a chip module.

The processing unit 502 may be a processor or a controller, and may be, for example, a Central Processing Unit (CPU), a general purpose processor, a Digital Signal Processor (DSP), an application-specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or execute the various illustrative logical blocks, modules, and circuits described in connection with the disclosure herein. The processing unit 502 may also be a combination that performs computing functions, e.g., comprising one or more microprocessors, a combination of DSPs and microprocessors, or the like. The communication unit 503 may be a communication interface, a transceiver, a transceiving circuit, etc., and the storage unit 501 may be a memory. When the processing unit 502 is a processor, the communication unit 503 is a communication interface, and the storage unit 501 is a memory, the wireless communication apparatus 500 according to the embodiment of the present application may be an access point shown in fig. 7.

In a specific implementation, the processing unit 502 is configured to perform any step performed by the access point in the above method embodiment, and when performing data transmission, such as sending, and the like, optionally invokes the communication unit 503 to complete the corresponding operation. The details will be described below.

The processing unit 502 is configured to: sending a trigger frame of a first type, wherein the trigger frame of the first type is used for triggering orthogonal frequency division multiple access uplink random access UORA of a first type station and a second type station; and acquiring a physical layer protocol data unit (PPDU) of a second type.

It should be noted that specific implementation of each operation in the embodiment shown in fig. 5 may be described in detail in the method embodiment shown in fig. 3, and is not described again here.

In one possible example, the first type trigger frame includes information of a set of random access resource units, RA-RUs, that correspond to a dedicated association identifier, AID, that indicates that the RA-RUs to which the dedicated AID corresponds are for access point association or random access by the first and second type stations.

In one possible example, the set of RA-RUs includes a target RU for carrying a second type of physical layer protocol data unit, the target RU including at least one RA-RU of the set of RA-RUs.

In one possible example, the first field of the second type of physical layer protocol data unit is received on a 20MHz channel corresponding to the target RU; the first field includes at least one of: ext> aext> legacyext> shortext> trainingext> fieldext> Lext> -ext> STFext>,ext> aext> legacyext> longext> trainingext> fieldext> Lext> -ext> LTFext>,ext> aext> legacyext> signalingext> fieldext> Lext> -ext> SIGext>,ext> aext> repeatedext> legacyext> signalingext> fieldext> RLext> -ext> SIGext>,ext> andext> aext> highext> efficiencyext> signalingext> fieldext> HEext> -ext> SIGext> -ext> Aext>.ext>

In one possible example, if the first field occupies more than one 20MHz channel, the first field is repeated over multiple 20MHz channels.

In one possible example, the target RU is located on the primary channel or the secondary channel; alternatively, the target RU is located on a primary channel with a frequency of 160MHz.

In one possible example, the target RU is specifically at least one idle RA-RU in the RA-RU set after the station performs carrier sensing.

In one possible example, the second type of physical layer protocol data unit is a high efficiency trigger based physical layer protocol data unit, HE TB PPDU.

In one possible example, the first type of access point is a very high throughput access point station, EHT AP STA; or the first type access point is a Wi-Fi7 access point or a Wi-Fi8 access point; alternatively, the first type of access point is a non-Wi-Fi 6 access point.

In one possible example, the processing unit 502 is further configured to: a first type of physical layer protocol data unit is obtained.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a station according to an embodiment of the present disclosure. Wherein, the station 600 comprises a processor 610, a memory 620, a communication interface 630 and a communication bus for connecting the processor 610, the memory 620 and the communication interface 630.

The memory 620 includes, but is not limited to, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), or a portable read-only memory (CD-ROM), and the memory 620 is used to store program codes executed by the station 600 and data transmitted.

Communication interface 630 is used for receiving and transmitting data.

The processor 610 may be one or more CPUs, and in the case where the processor 610 is one CPU, the CPU may be a single-core CPU or a multi-core CPU.

The processor 610 in the station 600 is configured to read one or more programs 621 stored in the memory 620, and perform the following operations: acquiring a first type trigger frame, wherein the first type trigger frame is used for triggering orthogonal frequency division multiple access uplink random access UORA of a first type station and a second type station; the second type of physical layer protocol data unit, PPDU, is sent over UORA.

It should be noted that the specific implementation of each operation may adopt the corresponding description of the method embodiment shown in fig. 3, and the station 600 may be configured to execute the method on the station side of the method embodiment of the present application, which is not described in detail herein.

Referring to fig. 7, fig. 7 is a schematic structural diagram of an access point according to an embodiment of the present disclosure. Access point 700 includes a processor 710, a memory 720, a communication interface 730, and a communication bus connecting processor 710, memory 720, and communication interface 730.

The memory 720 includes, but is not limited to, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), or a portable read-only memory (CD-ROM), and the memory 720 is used for storing program codes executed by the access point 700 and data transmitted.

Communication interface 730 is used to receive and transmit data.

The processor 710 may be one or more CPUs, and in the case where the processor 710 is one CPU, the CPU may be a single-core CPU or a multi-core CPU.

The processor 710 in the access point 700 is configured to read one or more programs 721 stored in the memory 720 and perform the following operations: sending a first type trigger frame, wherein the first type trigger frame is used for triggering orthogonal frequency division multiple access uplink random access UORA of a first type station and a second type station; the access point obtains a physical layer protocol data unit (PPDU) of a second type.

It should be noted that the specific implementation of each operation may adopt the corresponding description of the method embodiment shown in fig. 3, and the access point 700 may be configured to execute the method at the access point side of the method embodiment of the present application, and details are not described herein again.

Embodiments of the present application also provide a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program makes a computer perform some or all of the steps described in the above method embodiments for a station or an access point.

Embodiments of the present application further provide a computer program product, where the computer program product includes a computer program, and the computer program is operable to cause a computer to perform some or all of the steps described in the station or the access point in the above method embodiments. The computer program product may be a software installation package.

In the foregoing embodiments, the descriptions of the embodiments of the present application have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The steps of a method or algorithm described in the embodiments of the present application may be implemented in hardware, or may be implemented by a processor executing software instructions. The software instructions may consist of corresponding software modules that may be stored in RAM, flash memory, ROM, erasable Programmable Read Only Memory (EPROM), electrically Erasable Programmable Read Only Memory (EEPROM), registers, a hard disk, a removable hard disk, a compact disc read only memory (CD-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. Additionally, the ASIC may reside in a station or access point. Of course, the processor and the storage medium may reside as discrete components in a station or access point.

Those skilled in the art will appreciate that in one or more of the examples described above, the functionality described in the embodiments of the present application may be implemented, in whole or in part, by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions described in accordance with the embodiments of the application are all or partially generated when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium. For example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more of the available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a Digital Video Disk (DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), among others.

Each module/unit included in each apparatus and product described in the above embodiments may be a software module/unit, or may also be a hardware module/unit, or may also be a part of a software module/unit, and a part of a hardware module/unit. For example, for each device or product applied to or integrated into a chip, each module/unit included in the device or product may be implemented by hardware such as a circuit, or at least a part of the module/unit may be implemented by a software program running on a processor integrated within the chip, and the rest (if any) part of the module/unit may be implemented by hardware such as a circuit; for each device and product applied to or integrated with the chip module, each module/unit included in the device and product may be implemented by hardware such as a circuit, and different modules/units may be located in the same component (e.g., a chip, a circuit module, etc.) or different components of the chip module, or at least part of the modules/units may be implemented by a software program running on a processor integrated inside the chip module, and the rest (if any) part of the modules/units may be implemented by hardware such as a circuit; for each apparatus and product applied to or integrated with the station or the access point, each module/unit included in the apparatus and product may be implemented by hardware such as a circuit, different modules/units may be located in the same component (e.g., a chip, a circuit module, etc.) or different components in the station or the access point, or at least part of the modules/units may be implemented by a software program running on a processor integrated in the station or the access point, and the rest (if any) part of the modules/units may be implemented by hardware such as a circuit.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the embodiments of the present application in further detail, and it should be understood that the above-mentioned embodiments are only specific embodiments of the present application, and are not intended to limit the scope of the embodiments of the present application, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the embodiments of the present application should be included in the scope of the embodiments of the present application.

Claims

1. A method of wireless communication, comprising:

2. The method of claim 1, wherein the first type trigger frame comprises information of a set of random access resource units (RA-RUs) corresponding to a dedicated Association Identifier (AID) indicating that the RA-RU corresponding to the dedicated AID is used for random access by the first and second types of stations associated or not associated with an access point.

3. The method of claim 2, wherein sending the second type of physical layer protocol data unit over the UORA comprises:

the station determining, by the UORA, a target RU on the set of RA-RUs, the target RU including at least one RA-RU of the set of RA-RUs;

the station transmits the second type of physical layer protocol data unit on the target RU.

4. The method of claim 3, wherein the first field of the second type of physical layer protocol data unit is sent on a 20MHz channel corresponding to the target RU;

the first field includes at least one of: ext> aext> legacyext> shortext> trainingext> fieldext> Lext> -ext> STFext>,ext> aext> legacyext> longext> trainingext> fieldext> Lext> -ext> LTFext>,ext> aext> legacyext> signalingext> fieldext> Lext> -ext> SIGext>,ext> aext> repeatedext> legacyext> signalingext> fieldext> RLext> -ext> SIGext>,ext> andext> aext> highext> efficiencyext> signalingext> fieldext> HEext> -ext> SIGext> -ext> Aext>.ext>

5. The method of claim 4, wherein the first field is repeatedly sent on a plurality of 20MHz channels if the first field occupies more than one 20MHz channel.

6. The method of any of claims 3-5, wherein the target RU is located in a primary channel or a secondary channel; or,

the target RU is located on a primary channel having a frequency of 160MHz.

7. The method of any of claims 3-6, wherein the target RU specifically comprises at least one idle RA-RU in the set of RA-RUs after the station performs carrier sensing.

8. The method as claimed in any of claims 3-7, wherein the number of RUs in the target RU is determined by the communication capability of the station.

9. The method of claim 8, wherein the communication capabilities of the station are related to at least one of:

the transmission bandwidth supported by the station, the number of space-time streams supported by the station, the modulation and coding scheme supported by the station, the dual carrier modulation supported by the station, the length of the guard interval supported by the station, the type of the long training field supported by the station, the space-time block coding supported by the station, the transmission power supported by the station, and the length of the padding field supported by the station.

10. The method according to any of claims 3-9, further comprising, prior to acquiring the first type trigger frame:

obtaining the value of an OBO counter;

said determining a target RU on said RA-RU set by said UORA comprising:

the station decrements the value of the OBO counter according to the number of RA-RUs in the RA-RU set;

and if the value of the OBO counter is decreased to 0, the station randomly selects at least one RA-RU from the RA-RU set to determine the target RU.

11. The method of claim 10, wherein after sending the second type of physical layer protocol data unit on the target RU, the method further comprises:

and the station updates the value of the OBO counter.

12. The method of any of claims 1-11, wherein the second type of physical layer protocol data unit is a high efficiency trigger based physical layer protocol data unit (HE TB PPDU).

13. The method of any of claims 1-12, wherein the first type of trigger frame is a very high throughput EHT trigger frame.

14. The method of any of claims 1-13, wherein the first type of station is a non-access point very high throughput station non-AP EHT STA and the second type of station is a non-access high efficiency station non-AP HE STA.

15. The method of any one of claims 1-14, further comprising:

the station sends a physical layer protocol data unit of a first type over the UORA.

16. A method of wireless communication, comprising:

an access point sends a first type trigger frame, wherein the first type trigger frame is used for triggering orthogonal frequency division multiple access uplink random access UORA of a first type station and a second type station, and the access point is a first type access point;

17. The method of claim 16, wherein the first type trigger frame comprises information for a set of random access resource units (RA-RUs) corresponding to a dedicated Association Identifier (AID) indicating that a RA-RU corresponding to the dedicated AID is for access point association or random access by the first and second type stations.

18. The method of claim 17, wherein the set of RA-RUs includes a target RU for carrying the second type of physical layer protocol data unit, and wherein the target RU includes at least one RA-RU of the set of RA-RUs.

19. The method of claim 18, wherein the first field of the second type of physical layer protocol data unit is received on a 20MHz channel corresponding to the target RU;

20. The method of claim 19, wherein the first field is repeated over a plurality of 20MHz channels if the first field occupies more than one 20MHz channel.

21. The method of any of claims 18-20, wherein the target RU is located on a primary channel or a secondary channel; or,

the target RU is located on a primary channel having a frequency of 160MHz.

22. The method of any of claims 18-21, wherein the target RU is specifically at least one idle RA-RU of the set of RA-RUs after the station performs carrier sensing.

23. The method of any of claims 16-22, wherein the second type of physical layer protocol data unit is a high efficiency trigger based physical layer protocol data unit (HE TB PPDU).

24. The method of any of claims 16-23, wherein the first type of trigger frame is a very high throughput EHT trigger frame.

25. The method of any of claims 16-24, wherein the first type of access point is a very high throughput access point station, EHT AP STA; or,

the first type access point is a Wi-Fi7 access point or a Wi-Fi8 access point; or,

the first type of access point is a non-Wi-Fi 6 access point.

26. The method of any one of claims 16-25, further comprising:

the access point obtains a physical layer protocol data unit of a first type.

27. A wireless communication apparatus, comprising a processing unit and a communication unit, the processing unit configured to:

28. A wireless communication apparatus, comprising a processing unit and a communication unit, the processing unit configured to:

29. A station comprising a processor, memory, a communication interface, and one or more programs stored in the memory and configured to be executed by the processor, the programs including instructions for performing the steps in the method of any of claims 1-15.

30. An access point, wherein the network device is a first network device comprising a processor, 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 16-26.

31. 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 1-26.