CN116113069A

CN116113069A - Communication method and device, and computer readable storage medium

Info

Publication number: CN116113069A
Application number: CN202310064547.7A
Authority: CN
Inventors: 邢益辉
Original assignee: Zeku Technology Shanghai Corp Ltd
Current assignee: Zeku Technology Shanghai Corp Ltd
Priority date: 2023-01-12
Filing date: 2023-01-12
Publication date: 2023-05-12

Abstract

The application discloses a communication method and device, and a computer readable storage medium. The communication method is applied to a first station STA and comprises the following steps: receiving a first physical layer protocol data unit (PPDU) sent by a first Access Point (AP); when receiving the first PPDU, analyzing the first PPDU; and when the first trigger frame in the first PPDU is analyzed to be a basic trigger frame, and a first connection identifier AID in a user information field in the first trigger frame is matched with the first STA, controlling a Media Access Control (MAC) layer of the first STA to read data to be transmitted.

Description

Communication method and device, and computer readable storage medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a communications method and apparatus, and a computer readable storage medium.

Background

After receiving a physical layer protocol data unit PPDU including a basic trigger frame sent by an AP, a station device STA needs to carry data to be sent from a storage unit such as a DDR and replies after checking.

The STA generally waits for a period of time (inter-frame space time SIFS) after receiving the PPDU to send a response frame carrying uplink data, and there is some delay in receiving, preparing and sending the data by the MAC, which may result in that the time for preparing the data by the MAC is not long, which may result in that the MAC may not be able to completely read the data to be sent due to insufficient preparation time, thereby generating data interruption.

Disclosure of Invention

The application provides a communication method and device and a computer readable storage medium. Various aspects related to embodiments of the present application are described below.

In a first aspect, a communication method is provided, applied to a first station STA, and the method includes: receiving a first physical layer protocol data unit (PPDU) sent by a first Access Point (AP); when receiving the first PPDU, analyzing the first PPDU; and when the type of the first trigger frame analyzed to be the basic trigger frame in the first PPDU is analyzed, and a first connection identifier AID in a user information field in the first trigger frame is matched with the first STA, controlling a Media Access Control (MAC) layer of the first STA to read data to be transmitted.

In a second aspect, a communication apparatus is provided, applied to a first station STA, the apparatus comprising: a receiving unit, configured to receive a first physical layer protocol data unit PPDU sent by a first access point AP; the parsing unit is used for parsing the first PPDU when receiving the first PPDU; and the control unit is used for controlling the Media Access Control (MAC) layer of the first STA to read the data to be transmitted when the type of the first trigger frame analyzed to be in the first PPDU is a basic trigger frame and the first connection identifier (AID) in the user information field in the first trigger frame is matched with the first STA.

In a third aspect, there is provided a communication apparatus comprising: a transceiver, configured to receive a first physical layer protocol data unit PPDU sent by a first access point AP; a processor, configured to parse the first PPDU when receiving the first PPDU; and when the type of the first trigger frame analyzed to be the basic trigger frame in the first PPDU is the basic trigger frame, and a first connection identifier AID in a user information field in the first trigger frame is matched with the communication device, controlling a Media Access Control (MAC) layer of the communication device to read data to be transmitted.

In a fourth aspect, there is provided a communication device comprising a memory for storing a computer program and a processor for calling and executing the computer program from the memory to implement the method according to the first aspect.

In a fifth aspect, a computer-readable storage medium is provided, the storage medium storing a computer program, which when executed implements the method according to the first aspect.

According to the communication method provided by the embodiment of the application, the STA analyzes the PPDU in real time in the process of receiving the PPDU sent by the AP; when the trigger frame in the PPDU is determined to be a basic trigger frame and the device information indicated by the AID of the trigger frame is matched with the STA, the MAC layer is controlled to read the data to be sent, instead of waiting for the whole PPDU to start to prepare the data after the whole PPDU is received and checked. With this method, the time for preparing data by the MAC can be increased, thereby reducing the risk of data interruption.

Drawings

Fig. 1 is a schematic diagram of a communication system to which the communication method provided in the embodiment of the present application is applicable.

Fig. 2 is a schematic structural diagram of a communication device in the related art.

Fig. 3 is a schematic diagram of a frame structure of a downlink PPDU in the related art.

Fig. 4 is a timing diagram of MAC layer reception and reply to a downlink PPDU of a station.

Fig. 5 is a schematic flowchart of a communication method provided in an embodiment of the present application.

Fig. 6 is a timing chart of MAC layer reception and recovery of the first PPDU of the first STA in the embodiment of the present application.

Fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Fig. 8 is a schematic structural diagram of a communication device according to another embodiment of the present application.

Fig. 9 is a schematic structural diagram of a communication device according to still another embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application.

In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.

The terms "first," "second," "third," and "fourth" and the like in the description and in the claims of this application and in the drawings, are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases 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. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

Fig. 1 is a schematic diagram of a typical communication system to which the communication method provided in the embodiment of the present application is applicable. The network structure in fig. 1 may include one or more Access Point (AP) class stations and one or more non-AP class stations (none access point station, non-AP STAs). For ease of description, access point type stations are referred to herein as Access Points (APs), and non-access point type stations are referred to herein As Stations (STAs). The APs are, for example, AP1 and AP2 in fig. 1, and the STAs are, for example, STA1, STA2, and STA3 in fig. 1.

The access point type station is also called a wireless access point or a hot spot, and can be an access point for terminal equipment (such as a mobile phone) to enter a wireless or wired network, and is mainly deployed in families, buildings and parks, and the typical coverage radius is tens to hundreds of meters, and of course, the access point type station can also be deployed outdoors. The AP acts as a bridge connecting the wired network and the wireless network, and is mainly used to connect the wireless network clients together and then access the wireless network to the ethernet.

Illustratively, the access point may be a device supporting 802.11 series protocols or a chip supporting 802.11 series protocols, may support the access point to provide services for stations in a wireless local area network, such as a device or chip supporting 802.11be, or a device or chip supporting multiple wireless local area network (wireless local area networks, WLAN) standards of multiple 802.11 families, such as 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a, or a device or chip supporting the next-generation protocols of 802.11 be. For example, an access point may be referred to as a radio access network (radio access network, RAN) node (or device), base station, or the like. Currently, some examples of access points are: a transmission reception point (transmission reception point, TRP), an evolved Node B (eNB), a radio network controller (radio network controller, RNC), a Node B (Node B, NB), a base station controller (base station controller, BSC), a base transceiver station (base transceiver station, BTS), a home base station (e.g., home evolved NodeB, or home Node B, HNB), a baseband unit (BBU), or Wi-Fi access point, and other interface devices capable of operating in a wireless environment. Of course, the access point in the embodiments of the present application may also be a chip installed in these devices.

The access point may include a processor for controlling and managing the actions of the access point and a transceiver for receiving or transmitting information.

A Station (STA) is a device with wireless connectivity capable of providing information, voice and/or data connectivity to a user, and illustratively, a station may be a device supporting an 802.11 series of protocols or a chip supporting an 802.11 series of protocols, may support a station to communicate in a wireless lan, such as a device or chip supporting an 802.11be, or a device or chip supporting multiple wireless lan (wireless local area networks, WLAN) systems of multiple 802.11 families, such as 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a, or a device or chip supporting a next-generation protocol of 802.11 be. A station may also be referred to as a terminal device, a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), etc. Currently, examples of some sites include: a mobile phone, a tablet, a notebook, a palm, a mobile internet device (mobile internet device, MID), a wearable device, a Virtual Reality (VR) device, an augmented reality (augmented reality, AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned (self driving), a wireless terminal in teleoperation (remote medical surgery), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), an in-vehicle device, and the like. Of course, the station in the embodiment of the present application may also be a chip installed in these devices.

The station may include a processor for controlling and managing the actions of the access point and a transceiver for receiving or transmitting information.

In the present application, a station, station device, and STA are sometimes used in combination, but the same meaning is expressed.

The station in the embodiment of the present application may be a High Efficiency (HE) STA or an extremely high throughput (extremely high throughput, EHT) STA, and may also be an STA that is suitable for a WiFi standard of a future generation.

Of course, along with the continuous evolution of wireless local area network application scenarios, the access point and the website in the embodiment of the present application may also be applied in more scenarios, such as the access point and the website are sensor nodes (e.g., intelligent water meter, intelligent ammeter, intelligent air detection node) in smart cities, intelligent devices in smart homes (e.g., intelligent cameras, projectors, display screens, televisions, audio equipment, refrigerators, washing machines, etc.), nodes in the internet of things, entertainment terminals (e.g., wearable devices such as AR, VR), intelligent devices in smart offices (e.g., printers, projectors, etc.), internet of vehicles devices in the internet of vehicles, some infrastructure in daily life scenarios (e.g., vending machines, super self-service navigation stations of merchants, self-service cashing devices, self-service ordering machines, etc.). The specific forms of the access point and the station in the embodiments of the present application are not particularly limited, but are merely exemplary. Optionally, the access point and the station in the embodiment of the application are compatible and support 802.11ax/ac/n/g/b/a and other protocols.

The technical solution of the embodiments of the present application may be applied to various data processing communication systems, such as a wireless local area network communication (wireless local area network) system or a cellular system. In addition, the communication system can be also suitable for future-oriented communication technologies, and the technical scheme provided by the embodiment of the application is applicable. The system architecture and the service scenario described in the embodiments of the present application are for more clearly describing the technical solution of the embodiments of the present application, and do not constitute a limitation on the technical solution provided in the embodiments of the present application, and those skilled in the art can know that, with the evolution of the network architecture and the appearance of the new service scenario, the technical solution provided in the embodiments of the present application is also applicable to similar technical problems.

Fig. 2 is a schematic structural diagram of a related art communication device, which may be an AP or STA in fig. 1. As shown in fig. 2, the communication apparatus 200 includes: a processor 210, a transceiver 220; optionally, the communication device may also include a memory 230.

The transceiver 220 may be referred to as a transceiver unit, a transceiver circuit, or the like, for implementing a transceiver function. The transceiver 220 may include a receiver, which may be referred to as a receiver or a receiving circuit, etc., for implementing a receiving function, and a transmitter; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., for implementing a transmitting function.

The memory 230 may store a computer program or software code or instructions, which may also be referred to as firmware. The processor 210 may control the MAC layer and the PHY layer by running computer programs or software code or instructions therein or by calling computer programs or software code or instructions stored in the memory 230. The processor 210 may be a central processing unit (central processing unit, CPU), and the memory 230 may be, for example, a read-only memory (ROM), or a random access memory (random access memory, RAM).

The processor 210 and transceiver 220 in the communication device 200 described above may be implemented on an integrated circuit (integrated circuit, IC), analog IC, radio frequency integrated circuit RFIC, mixed signal IC, application specific integrated circuit (application specific integrated circuit, ASIC), printed circuit board (printed circuit board, PCB), electronics, or the like.

The communication device 200 may further include an antenna 240, and the modules included in the communication device 200 are only exemplary, and the present application is not limited thereto.

Referring back to fig. 1, the following describes the interaction procedure between the AP and the STA in fig. 1 in detail.

In the WLAN system 802.11ax after the OFDMA technique is introduced, the AP may perform uplink and downlink transmission with different STAs on different time-frequency resources. The AP may use different modes for uplink and downlink transmission, such as OFDMA single-user multiple-input multiple-output (SU-MIMO) mode, or OFDMA multi-user multiple-input multiple-output (MU-MIMO) mode.

Wherein the AP may transmit the downlink physical layer protocol data unit (physical layer protocol data unit, PPDU) to multiple stations or groups of stations simultaneously.

Fig. 3 illustrates a frame structure of a PPDU in the related art, and as shown in fig. 3, a downlink PPDU may include a preamble part and a data part. Some preamble fields are included in the preamble part. The data portion is used to carry data for transmission to the STA.

802.11ax multi-user transmission is based on OFDMA techniques for improving throughput. When it performs uplink transmission (UL-OFDMA) or downlink transmission (DL-OFDMA), an Access Point (AP) needs to use trigger frames (trigger frames) to exchange scheduling information between multi-user communications. The trigger frame is also used to effect the exchange of frames between the MU-MIMO of the users. The trigger frame is typically located in front of the aggregate frame in the PPDU, and contains multiple subtypes, which provide many important functions in 802.11 ax.

Referring to fig. 3, a frame structure of a trigger frame is also shown in fig. 3, where the trigger frame includes a frame control field, a frame length field, an RA field, a TA field, a common information (common info) field, a user information (user info) field, a padding (padding) field, an FCS field, and the like.

The public information and the public information comprise a trigger frame type field, and different values of the field correspond to different trigger frame types. Table 1 below shows the correspondence between the values of the trigger frame fields and the trigger frame types, where the values of the trigger frame type fields may be 0-15, where the values of the fields are 0-7, which correspond to 8 different types of trigger frames, and the values of 8-15 are reserved.

TABLE 1

Trigger frame type field	Trigger frame type
		0	Basic (basic)
1	Beamforming report poll (BFRP)
		2	Multiuser block acknowledgement request (MU-BAR)
3	Multi-user request to send (MU-RTS)
		4	Buffer Status Report Poll (BSRP)
5	Multicast multiuser block acknowledgement request (GCR MU-BAR) with retry
		6	Bandwidth Query Report Polling (BQRP)
7	Null data packet feedback report polling (NFRP)
		8-15	Reservation (Reserved)

As shown in table 1, when the value of the trigger frame type subfield is 4, the trigger frame is of a buffer status report poll (buffer status report poll frame, BSRP) type, and the trigger frame of the type is used for requesting the buffer status of the station, and after the station parses the trigger frame of the type, the station queries related information of the buffer space, including information such as the capacity of the buffer space and the available space, and reports the current buffer status to the access point.

When the value of the trigger frame type field is 0, the trigger frame type is indicated as a basic trigger frame (basic trigger frame) which is used for scheduling uplink data transmission, that is, after the station parses the basic trigger frame, uplink data transmission is performed to the access point. In this case, the MAC layer needs to transfer data from the DDR and further transmit uplink data.

The communication method provided in the embodiment of the present application mainly relates to a basic trigger frame, and therefore, in the following, a method for replying to a basic trigger frame by a station and a problem existing in the method in the related art will be described in detail with reference to fig. 4.

Fig. 4 shows a timing diagram of MAC layer reception and reply of a PPDU containing a basic trigger frame of a station. The figure shows a medium (medium) for transmitting PPDUs and response frames, which medium can also be understood as a channel for signal transmission.

As can be seen from fig. 4, after the MAC layer of the station receives the complete PPDU through the medium, it checks the PPDU, and after checking the PPDU, the MAC layer starts to prepare data, which is typically data to be transmitted stored in a storage space such as a DDR of the station, and the MAC needs to read the data from the storage space such as the DDR, and perform corresponding processing (e.g., package the read data to be transmitted into MPDUs, etc.) on the medium to transmit the data.

And according to the specifications of the IEEE 802.11 protocol, the station device waits for a period of time after receiving the PPDU, the period of time is called a short inter-frame space (short inter frame space, SIFS), and the SIFS may be 16 microseconds (us), for example. While there are some delays in receiving, preparing and transmitting the data, such as the receiving delay 410, the delay 420 for checking the data inside the MAC and the transmitting delay 430 shown in fig. 4, this may result in that the time for preparing the data for the MAC (shown as 440 in fig. 4) is not long, which may result in that the MAC may not be able to completely read the data to be transmitted due to insufficient preparation time, thereby resulting in a data interruption.

In view of the foregoing, embodiments of the present application provide a communication method and apparatus, and a computer readable storage medium.

The communication method provided in the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Fig. 5 is a schematic flowchart of a communication method provided in an embodiment of the present application, where the method is applied to a first station STA, and the first station STA may be any of the aforementioned types of station devices, for example, any of SAT1-SAT3 shown in fig. 1, or the first station STA may also be an electronic device shown in fig. 2.

The method in fig. 5 includes steps S510-S530.

In step S510, a first physical layer protocol data unit PPDU transmitted by a first access point AP is received.

The first access point AP here may also be any of the types of access point devices mentioned in the foregoing. The first access point AP may be, for example, AP1 or AP2 in fig. 1, or the first access point AP may also be the electronic device shown in fig. 2.

The first access point AP may transmit a first PPDU through a wireless communication link with the first station STA, the first PPDU being generated by a physical layer (PHY) of the first access point AP, and a frame format of the first PPDU may be referred to the description of fig. 3, which is not repeated herein.

In step S520, in the process of receiving the first PPDU, the first PPDU is parsed.

It should be understood that in the related art, the parsing of the PPDU by the station apparatus is generally performed after the PPDU is completely received; in the method of the embodiment of the present application, the process of receiving and analyzing the PPDU is performed synchronously, in other words, the analysis of the first PPDU is performed in real time.

In step S530, when the first trigger frame in the first PPDU is parsed to be the basic trigger frame, and the first connection identifier AID in the user information field in the first trigger frame is matched with the first STA, the MAC layer of the first STA is controlled to read the data to be transmitted.

Referring to fig. 3, in the frame structure of the downlink PPDU, the trigger frame is located after the physical layer packet header. Thus, in the process of receiving the first PPDU, after receiving the physical layer packet header, the relevant information of the trigger frame may be determined as described in step S520.

When the first trigger frame in the first PPDU is a basic trigger frame, it is indicated that one or more STAs of the plurality of STAs receiving the first PPDU need to transmit uplink data at this time.

For the first STA, after determining that the first trigger frame in the first PPDU is the basic trigger frame, it needs to determine whether it needs to reply (i.e. perform uplink data transmission) or not, which may be performed by means of the comparison of the connection identifiers.

As shown in fig. 3, a connection identifier AID field, which is globally unique for distinguishing a plurality of STAs, is included in a user information (user info) field of the trigger frame. For the first STA, when the first AID in the user info field of the first trigger frame matches with the device information of the first STA, it may be determined that the first STA needs to reply to the received basic trigger frame.

When the first STA determines that the first STA needs to reply to the first PPDU, the MAC layer of the first STA may be controlled to read data to be transmitted (also referred to as handling data to be transmitted), without waiting for the completion of the reception of the first PPDU.

Fig. 6 shows a timing diagram of the MAC layer reception and reply of the first PPDU by the first station STA when the above method is applied. As can be seen from fig. 6, in the process of receiving the first PPDU, once the STA parses that the first PPDU includes a basic trigger frame, and the AID in the user information field in the trigger frame matches with the STA, the MAC layer may be controlled to start preparing data, for example, reading data to be sent from the DDR. Making the preparation of data at this point in time can increase the time for the MAC layer to prepare the reply data, while referring to fig. 4, the time 610 for the MAC to prepare the data in fig. 6 is greater than the time shown in part 410 in fig. 4.

According to the communication method provided by the embodiment of the application, the STA analyzes the PPDU in real time in the process of receiving the PPDU sent by the AP; when the trigger frame in the PPDU is determined to be a basic trigger frame and the equipment information indicated by the AID of the trigger frame is matched with the STA, the MAC layer is controlled to read the data to be sent instead of waiting for the whole PPDU to start to prepare the data after the whole PPDU is received and checked, so that the time for preparing the data by the MAC can be increased, and the risk of data interruption is reduced.

In some embodiments, the type of the first trigger frame in the first PPDU may be determined according to a trigger frame type field in the first trigger frame. Referring to fig. 3, the trigger frame type field is generally located in a common information field (common info) of the first trigger frame, different values of the field indicate different trigger frame types, and the correspondence between the different values of the field and the trigger frame types may be referred to in table 1 above, which is not repeated herein. In this embodiment of the present application, if the value of the field is resolved to be 0, the first trigger frame may be determined to be a basic trigger frame.

As described above, after determining that the trigger frame in the first PPDU is a basic trigger frame and the AID is matched with the first STA, the MAC layer of the first STA starts to carry data; after the aggregate frame is received, errors may occur in the process of data transmission, and a reply is not needed; furthermore, in some cases, since the trigger frame may be aggregated with other frames, after receiving the complete PPDU, it may be necessary to reply to other types of frames, which are typically created by hardware. In both cases, the data carried by the MAC may not be available.

For the above case, in some embodiments of the present application, it may be determined whether the first STA needs to reply to the first AP after the first PPDU is received; and if the first STA does not need to reply to the first AP, discarding the data read by the MAC layer.

If the first STA needs to reply to the first AP, controlling the MAC layer of the first STA to generate a response frame according to the received data to be transmitted; and replies a response frame to the first AP. Namely, the first STA determines that the received PPDU comprises a basic trigger frame, after the AID of the basic trigger frame is matched with the first STA, the MAC layer receives data to be transmitted, checks the received complete PPDU, generates a response frame according to the received data to be transmitted after determining that the data is required to be received without errors, and transmits the response frame through an uplink communication link between the first AP and the first STA.

In some embodiments, a method of determining whether a first STA needs to reply to a first AP includes: after the first PPDU is received, checking according to the FCS field in the first trigger frame to determine whether the first PPDU has errors; when the first PPDU has an error, it is determined that the first STA does not need to reply to the first AP at this time.

Method embodiments of the present application are described above in detail in connection with fig. 1-6, and apparatus embodiments of the present application are described below in detail in connection with fig. 7-9. It is to be understood that the description of the method embodiments corresponds to the description of the device embodiments, and that parts not described in detail can therefore be seen from the preceding method embodiments.

Fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication apparatus 700 is applied to a first station STA, which may be any of the types of station devices mentioned in the foregoing, for example, any one of SAT1-SAT3 shown in fig. 1, or may be an electronic device shown in fig. 2.

The communication apparatus 700 in fig. 7 includes:

and a receiving unit 710, configured to receive a first physical layer protocol data unit PPDU sent by the first access point AP.

And a parsing unit 720, configured to parse the first PPDU when receiving the first PPDU.

And a control unit 730, configured to control, when the first trigger frame parsed into the first PPDU is a basic trigger frame and a first connection identifier AID in a user information field in the first trigger frame is matched with the first STA, a medium access control MAC layer of the first STA to read data to be transmitted.

In some embodiments, the type of the first trigger frame is indicated by a trigger frame type field of the first trigger frame, the trigger frame type field being located in a common information field of the first trigger frame.

In some embodiments, the apparatus further comprises: a determining unit, configured to determine, after the first PPDU is received, whether the first STA needs to reply to the first AP; and if the first STA does not need to reply to the first AP, discarding the data read by the MAC layer.

In some embodiments, the first trigger frame further includes a frame check sequence FCS field; the determining unit is further configured to: after the first PPDU is received, checking according to the FCS field to determine whether the first PPDU has errors; and when the first PPDU has errors, determining that the first STA does not need to reply to the first AP.

In some embodiments, the control unit is further configured to: if the first STA needs to reply to the first AP, controlling the MAC layer to determine a response frame according to the data to be transmitted; the communication device further includes a transmitting unit configured to transmit the response frame to the first AP.

Fig. 8 is a schematic structural diagram of a communication apparatus provided in another embodiment of the present application, where the communication apparatus is a station device, and the station device may be any station device described above, and the station device may be any one of STA1-STA3 in fig. 1, or the station device may also be the electronic device shown in fig. 2, for example; alternatively, the communication device may also be a chip or an integrated circuit capable of implementing the method of the above embodiments. The communication apparatus 800 in fig. 8 includes:

and a transceiver 810, configured to receive a first physical layer protocol data unit PPDU sent by the first access point AP.

A processor 820 for parsing the first PPDU when receiving the first PPDU; and when the first trigger frame in the first PPDU is analyzed to be a basic trigger frame, and a first connection identifier AID in a user information field in the first trigger frame is matched with the communication device, controlling a Media Access Control (MAC) layer of the communication device to read data to be transmitted.

In some embodiments, the processor is further configured to: after the first PPDU is received, determining whether the first STA needs to reply to the first AP; and if the first STA does not need to reply to the first AP, discarding the data read by the MAC layer.

In some embodiments, the first trigger frame further includes a frame check sequence FCS field; the processor is further configured to: after the first PPDU is received, checking according to the FCS field to determine whether the first PPDU has errors; and when the first PPDU has errors, determining that the first STA does not need to reply to the first AP.

In some embodiments, if the first STA needs to reply to the first AP, the processor is further configured to control the MAC layer to determine a response frame according to the data to be sent; the transceiver is also configured to send the response frame to the first AP.

Fig. 9 is a schematic structural diagram of a communication apparatus 900 provided in yet another embodiment of the present application. The dashed lines in fig. 9 indicate that the unit or module is optional. The communication device 900 may be used to implement the methods described in the method embodiments described above. The communication apparatus 900 may be, for example, the aforementioned station device, which may be, for example, any one of STA1 to STA3 in fig. 1, or the station device may also be the electronic device shown in fig. 2; alternatively, the communication device 900 may also be a chip or an integrated circuit capable of implementing the method of the above embodiments.

The communications apparatus 900 can include one or more processors 910. The processor 910 may support the communication device 900 to implement the methods described in the method embodiments above. The processor 910 may be a general purpose processor or a special purpose processor. For example, the processor may be a central processing unit (central processing unit, CPU). Alternatively, the processor 910 may be another general purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (application specific integrated circuit, ASIC), an off-the-shelf programmable gate array (field programmable gate array, FPGA) or other programmable logic device, a discrete gate or transistor logic device, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The communications apparatus 900 can also include one or more memories 920. The memory 920 has stored thereon a program that can be executed by the processor 910 to cause the processor 910 to perform the method described in the method embodiments above. The memory 920 may be separate from the processor 910 or may be integrated into the processor 910.

The communication device 900 may also include a transceiver 930. The processor 910 may communicate with other devices or chips through the transceiver 930. For example, the processor 910 may transmit and receive data to and from other devices or chips through the transceiver 930.

There is also provided in an embodiment of the present application a chip comprising a processor operable to invoke and run a computer program from a memory, such that a device having the chip mounted thereon performs the method described in the above method embodiment. It will be appreciated that the processor may be any of the types of processors mentioned above. It will be appreciated that the memory may be separate from the chip or may be integrated into the chip.

The embodiment of the application also provides a computer readable storage medium for storing a program. The computer-readable storage medium is applicable to the station apparatus provided in the embodiments of the present application, and the program causes a computer to execute the methods in the embodiments of the present application.

Embodiments of the present application also provide a computer program product. The computer program product includes a program. The computer program product may be applied to a site apparatus provided in the embodiments of the present application, and the program causes a computer to execute the methods in the embodiments of the present application.

The embodiment of the application also provides a computer program. The computer program can be applied to the site equipment provided by the embodiments of the present application, and the computer program makes the computer execute the methods in the embodiments of the present application.

It should be understood that the term "and/or" is merely an association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

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

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

In the above embodiments, it 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. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber Line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be read by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more 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 versatile disk (digital video disc, DVD), or a semiconductor medium (e.g., a Solid State Disk (SSD)), etc.

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

Claims

1. A communication method applied to a first station STA, the method comprising:

receiving a first physical layer protocol data unit (PPDU) sent by a first Access Point (AP);

when receiving the first PPDU, analyzing the first PPDU;

and when the type of the first trigger frame analyzed to be the basic trigger frame in the first PPDU is analyzed, and a first connection identifier AID in a user information field in the first trigger frame is matched with the first STA, controlling a Media Access Control (MAC) layer of the first STA to read data to be transmitted.

2. The method of claim 1, wherein the type of the first trigger frame is indicated by a trigger frame type field of the first trigger frame, the trigger frame type field being located in a common information field of the first trigger frame.

3. The method according to claim 1, wherein the method further comprises:

after the first PPDU is received, determining whether the first STA needs to reply to the first AP;

and discarding the data read by the MAC layer if the first STA does not need to reply to the first AP.

4. A method according to claim 3, wherein the first trigger frame further comprises a frame check sequence FCS field;

the determining whether the first STA needs to reply to the first AP includes:

after the first PPDU is received, checking according to the FCS field to determine whether the first PPDU has errors;

and when the first PPDU has errors, determining that the first STA does not need to reply to the first AP.

5. A method according to claim 3, characterized in that the method further comprises:

if the first STA needs to reply to the first AP, controlling the MAC layer to determine a response frame according to the data to be transmitted;

and sending the response frame to the first AP.

6. A communication apparatus for use with a first station STA, the apparatus comprising:

a receiving unit, configured to receive a first physical layer protocol data unit PPDU sent by a first access point AP;

the parsing unit is used for parsing the first PPDU when receiving the first PPDU;

and the control unit is used for controlling the Media Access Control (MAC) layer of the first STA to read the data to be transmitted when the type of the first trigger frame analyzed to be in the first PPDU is a basic trigger frame and the first connection identifier (AID) in the user information field in the first trigger frame is matched with the first STA.

7. The communication device of claim 6, wherein the device further comprises:

a determining unit, configured to determine, after the first PPDU is received, whether the first STA needs to reply to the first AP;

and if the first STA does not need to reply to the first AP, discarding the data read by the MAC layer.

8. The communication device of claim 7, wherein the communication device is configured to,

the control unit is further configured to:

the communication device further includes:

and the sending unit is used for sending the response frame to the first AP.

9. A communication device, comprising:

a transceiver, configured to receive a first physical layer protocol data unit PPDU sent by a first access point AP;

a processor, configured to parse the first PPDU when receiving the first PPDU; and when the type of the first trigger frame analyzed to be the basic trigger frame in the first PPDU is the basic trigger frame, and a first connection identifier AID in a user information field in the first trigger frame is matched with the communication device, controlling a Media Access Control (MAC) layer of the communication device to read data to be transmitted.

10. A communication device comprising a memory for storing a computer program and a processor for calling and executing the computer program from the memory to implement the method of any of claims 1-4.

11. A computer readable storage medium, characterized in that the storage medium is adapted to store a computer program which, when executed, implements the method according to any of claims 1 to 4.