CN114222367A

CN114222367A - Data transmission method and device

Info

Publication number: CN114222367A
Application number: CN202111284914.1A
Authority: CN
Inventors: 淦明; 左鑫; 梁丹丹; 杨讯
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-11-17
Filing date: 2017-11-17
Publication date: 2022-03-22
Also published as: CN109803392B; CN109803392A

Abstract

The disclosure provides a data transmission method and device, and belongs to the technical field of communication. The method comprises the following steps: sending a full-duplex FD trigger frame, wherein the FD trigger frame comprises a length field, and the length field is used for indicating the time required by data transmission; receiving data sent by an STA sending data, wherein the data is sent by the STA at a preset time interval after the data is received by the FD trigger frame; and transmitting an acknowledgement frame of the data to the STA transmitting the data. According to the method and the device, after the data sent by the STA is received, the confirmation frame is sent to the STA, so that the STA participating in data sending in the full-duplex transmission process can use the FD EDCA parameter provided by the AP to update the existing EDCA parameter of the STA after receiving the confirmation frame, the priority of channel access is reduced, and the fairness of the STA participating in the full-duplex transmission and the STA not participating in the full-duplex transmission in the aspect of sending opportunities is ensured.

Description

Data transmission method and device

The application is a divisional application of Chinese patent application with application number 201711147135.0 and invented name of 'data transmission method and device' filed on 17.11.2017.

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a data transmission method and apparatus.

Background

The Full Duplex (FD) technology can realize the transmission of data signals in different uplink and downlink transmission directions on the same wireless channel, that is, the data signals can be received while being transmitted, and the transmission and the reception of the data signals are performed synchronously. Compared with the conventional Half Duplex (HD) technology, such as frequency division duplex, time division duplex, etc., the full duplex technology can double the spectrum utilization rate, and thus becomes one of the potential technologies of the next generation of wireless fidelity (WiFi).

Currently, the communication flow of the related art is as follows: an Access Point (AP) first sends a preset frame to 2 Stations (STAs), such as STA1 and STA2, where STA1 is a STA that receives data and STA2 is a STA that sends data. After receiving the preset frame, the STA2 sends data to the AP at a short inter-frame space (SIFS), and at this time, the AP sends data to the STA 1. After receiving the data, AP and STA1 perform ACK frame transmission, e.g., STA1 transmits an ACK frame to AP and AP transmits an ACK frame to STA 2.

In the course of implementing the present disclosure, the inventors found that the prior art has at least the following problems:

in the above technology, the time used by the data sent by the AP and the time used by the STA2 in the transmission process may be inconsistent, so that the time for receiving the data by the STA1 and the AP is different, and thus the time for transmitting the ACK frame to the AP by the STA1 which receives the data first exceeds the time for receiving the data by the STA, which affects the data transmission between the STA1 and the AP, and it is difficult to ensure the fairness in terms of transmission opportunities between the STA which participates in the full-duplex transmission and the STA which does not participate in the full-duplex transmission.

Disclosure of Invention

The embodiment of the disclosure provides a data transmission method and device. The technical scheme is as follows:

in a first aspect, a data transmission method is provided, where the method includes:

sending an FD trigger frame, wherein the FD trigger frame comprises a length field, and the length field is used for indicating the time required by data transmission;

transmitting first data to an STA (station) to receive data at a preset time interval after the FD trigger frame is transmitted;

receiving second data sent by the STA sending the data, wherein the second data is sent by the STA sending the data at the preset time interval after the FD trigger frame is received;

transmitting an acknowledgement frame of the second data to the STA transmitting the data;

and receiving the acknowledgement frame of the first data sent by the STA of the data to be received.

The method provided by the embodiment of the present disclosure, for a communication scenario where only the AP supports full duplex, transmits a trigger frame including a length field to the STA1 and the STA2 by the AP before transmitting data. The length field indicates that the time required for uplink and downlink data transmission in full duplex is the same, so that the time for the data sent by the STA2 to reach the AP is the same as the time for the data sent by the AP to reach the STA1, and the data transmission in uplink and downlink different transmission directions ends at the same time. Thus, the AP and the STA1 can respond to the acknowledgement frame at the same time or in a designated sequence, which avoids the problem that the acknowledgement frame cannot be correctly received and the problem that channel resources are preempted, and ensures correct data transmission between the AP and the STA.

In a first possible implementation manner of the first aspect, the sending, to the STA that sends the data, an acknowledgement frame of the second data includes:

and after receiving the second data, sending an acknowledgement frame of the second data to the STA sending the data at the preset time interval.

In a second possible implementation manner of the first aspect, the sending, to the STA that sends data, an acknowledgement frame of the second data includes:

and sending the acknowledgement frame of the second data to the STA sending the data according to the preset acknowledgement frame sending sequence and sending time difference.

In a third possible implementation manner of the first aspect, the length field is the same as a length field in a legacy signaling field in a legacy preamble in a physical layer protocol data unit (PPDU) or a downlink PPDU.

In a fourth possible implementation manner of the first aspect, the method further includes:

and when the time required by the data to be transmitted is less than the time corresponding to the length field, filling a default value or a random value into the data to be transmitted, so that the time required by the data to be transmitted is equal to the time corresponding to the length field in the FD trigger frame.

In a fifth possible implementation manner of the first aspect, the STA to receive data and the STA to transmit data are the same STA.

In a second aspect, a data transmission method is provided, where the method includes:

receiving an FD trigger frame, wherein the FD trigger frame comprises a length field which is used for indicating the time required by data transmission;

and carrying out data transmission with the equipment sending the FD trigger frame.

The method provided by the embodiment of the disclosure aims at a communication scene that both the AP and the STA support full duplex, and the AP sends a trigger frame comprising a length field to the STA before sending data. The length field is used for indicating the time of data transmission, so that the transmission time of data in different uplink and downlink transmission directions can be ensured to be consistent under the condition that the transmission rates are consistent, the time of the data sent by the STA reaching the AP is consistent with the time of the data sent by the AP reaching the STA, and the data transmission in different uplink and downlink transmission directions is finished at the same time. Therefore, the AP and the STA can simultaneously respond to the confirmation frame or respond to the confirmation frame in the appointed sequence, thereby not only avoiding the problem that the confirmation frame cannot be correctly received, but also avoiding the problem that channel resources are preempted, and ensuring correct data transmission between the AP and the STA.

In a first possible implementation manner of the second aspect, the performing, by the device that sends the FD trigger frame, data transmission includes:

receiving first data sent by the equipment, wherein the first data is sent by the equipment at a preset time interval after the FD trigger frame is sent;

transmitting an acknowledgement frame of the first data to the device.

In a second possible implementation manner of the second aspect, the sending, to the device, an acknowledgement frame of the first data includes:

and sending an acknowledgement frame of the first data to the equipment at the preset time interval after receiving the first data.

In a third possible implementation manner of the second aspect, the sending, to the device, an acknowledgement frame of the first data includes:

and sending the acknowledgement frame of the first data to the equipment according to a preset acknowledgement frame sending sequence and sending time difference.

In a fourth possible implementation manner of the second aspect, the performing, by the device that sends the FD trigger frame, data transmission includes:

sending second data to the device at a preset time interval after the FD trigger frame is received;

and receiving an acknowledgement frame of the second data sent by the equipment.

In a fifth possible implementation manner of the second aspect, the performing data transmission with the device that sends the FD trigger frame includes:

sending the second data to the device at a preset time interval after receiving the FD trigger frame;

receiving the first data sent by the equipment;

transmitting an acknowledgement frame of the first data to the device;

In a sixth possible implementation manner of the second aspect, the length field is the same as a length field in a legacy signaling field in a legacy preamble in an uplink PPDU or a downlink PPDU.

In a seventh possible implementation manner of the second aspect, the method further includes:

and when the time required by the data to be transmitted is less than the time corresponding to the length field, filling a default value or a random value into the data to be transmitted, so that the time required by the data to be transmitted is equal to the time corresponding to the length field.

In a third aspect, a data transmission method is provided, where the method includes:

sending an FD Request To Send (RTS) frame;

receiving a first Clear To Send (CTS) frame sent by an STA which is to receive data and a second CTS frame sent by the STA which is to send data, wherein the sending time of the first CTS frame and the sending time of the second CTS frame are the same and the contents of the first CTS frame and the second CTS frame are the same;

and carrying out data transmission with the STA to receive the data and the STA to send the data.

The method provided by the embodiment of the present disclosure, for a communication scenario in which only the AP supports full duplex, performs a channel protection procedure of FD RTS/CTS before data transmission, and the STA1 and the STA2 send CTS frames to the AP after receiving the FD RTS frame, so that the AP can receive CTS frames sent by the two types of STAs at the same time. Compared with the prior art that when channel protection is performed, the STAs 1 and 2 sequentially send CTS frames, which wastes air interface transmission time and is prone to channel protection failure caused by the fact that a certain STA does not reply to a CTS frame, the channel protection scheme disclosed by the present disclosure, in which multiple STAs send CTS frames at the same time, not only saves air interface transmission time, but also avoids unreliability of multiple STAs sending CTS frames in turn, and enhances robustness of channel protection.

In a first possible implementation manner of the third aspect, the first CTS frame and the second CTS frame employ the same scrambling code initial state and modulation coding parameters as the FD RTS frame.

In a fourth aspect, a data transmission method is provided, where the method includes:

receiving an FD RTS frame;

sending a CTS frame to a device sending the FD RTS frame;

and carrying out data transmission with the equipment.

According to the method provided by the embodiment of the disclosure, for a communication scene in which only an AP supports full duplex, by performing a channel protection process of FD RTS/CTS before data transmission, each STA sends a CTS frame to the AP after receiving the FD RTS frame, so that the AP can receive CTS frames sent by the two types of STAs at the same time. Compared with the prior art that different STAs send CTS frames in sequence when channel protection is carried out, air interface transmission time is wasted, and the condition that channel protection fails because a certain STA does not reply the CTS frame easily occurs, the channel protection scheme that the STAs send the CTS frames simultaneously in the disclosure saves the air interface transmission time, avoids the unreliability of sending the CTS frames by a plurality of STAs in turn, and enhances the robustness of channel protection.

In a first possible implementation manner of the fourth aspect, the CTS frame adopts the same scrambling code initial state and modulation coding parameters as the FD RTS frame.

In a fifth aspect, a data transmission method is provided, where the method includes:

receiving data sent by an STA, wherein the data is sent by the STA at a preset time interval after the FD trigger frame is received;

and sending an acknowledgement frame of the data to the STA.

According to the method provided by the embodiment of the disclosure, after the data sent by the STA is received, the confirmation frame is sent to the STA, so that the STA participating in data sending in the full-duplex transmission process can update the existing EDCA parameter by using the FD EDCA parameter provided by the AP after receiving the confirmation frame, thereby reducing the priority of channel access and ensuring the fairness of the STA participating in the full-duplex transmission and the STA not participating in the full-duplex transmission in the aspect of sending opportunity.

In a first possible implementation manner of the fifth aspect, before the sending the acknowledgement frame of the data to the STA, the method further includes:

and sending a management frame to the STA, wherein the management frame carries an FD Enhanced Distributed Channel Access (EDCA) parameter, and the FD EDCA parameter is used for updating the existing EDCA parameter of the STA.

In a sixth aspect, a data transmission method is provided, where the method includes:

sending data to a device sending the FD trigger frame after receiving the FD trigger frame;

receiving an acknowledgement frame of the data sent by the device;

the FD EDCA parameter is used to update existing EDCA parameters including Contention Window (CW) min Access Category (AC), CWmax AC, Arbitration Inter Frame Space Number (AIFSN) AC, and FD edcaitimeter AC.

The method provided by the embodiment of the disclosure updates the existing EDCA parameter of the STA by using the FD EDCA parameter provided by the AP after finishing data transmission aiming at the STA participating in data transmission in the full-duplex transmission process, thereby reducing the priority of channel access and ensuring the fairness of the STA participating in the full-duplex transmission and the STA not participating in the full-duplex transmission in the aspect of transmission opportunity.

In a first possible implementation manner of the sixth aspect, the channel access priority of the FD EDCA parameter is smaller than the existing EDCA parameter.

In a second possible implementation manner of the sixth aspect, after updating the existing EDCA parameter using the FD EDCA parameter, the method includes:

determining the effective duration of the updating according to the updated FD EDCATime [ AC ];

and when the updating time length reaches the effective time length, restoring the existing EDCA parameters to the state before the updating.

In a third possible implementation of the sixth aspect, the existing EDCA parameters are contained in an FD AC parameter record field in an existing EDCA parameter set element structure, which is the same as the FD EDCA parameter set element structure.

In a fourth possible implementation manner of the sixth aspect, the FD AC parameter record includes an FD best effort stream access category (AC _ BE) parameter record, an FD background stream access category (AC _ BK) parameter record, an FD video stream access category (AC _ video, AC _ VI) parameter record, and an FD voice stream access category (AC _ VO) parameter record.

In a fifth possible implementation manner of the sixth aspect, the FD EDCA parameter is carried in the form of an element in a management frame sent by the device; before updating the existing EDCA parameters using the FD EDCA parameters, the method further comprises:

receiving the management frame sent by the equipment;

and acquiring the FD EDCA parameters from the management frame.

A seventh aspect provides a data transmission apparatus configured to perform the method of the first aspect or any one of the possible implementation manners of the first aspect. In particular, the data transmission apparatus comprises functional means for performing the method of the first aspect described above or any one of the possible implementations of the first aspect.

In an eighth aspect, a data transmission apparatus is provided for performing the method of the second aspect or any possible implementation manner of the second aspect. In particular, the data transmission device comprises functional modules for performing the method of the second aspect or any one of the possible implementations of the second aspect.

A ninth aspect provides a data transmission apparatus for performing the method of the third aspect or any one of the possible implementations of the third aspect. In particular, the data transmission apparatus comprises functional means for performing the method of the third aspect or any one of the possible implementations of the third aspect.

A tenth aspect provides a data transmission apparatus for performing the method of the fourth aspect or any one of the possible implementations of the fourth aspect. In particular, the data transmission device comprises functional modules for performing the method of the fourth aspect or any one of the possible implementations of the fourth aspect.

In an eleventh aspect, a data transmission apparatus is provided for performing the method of the fifth aspect or any possible implementation manner of the fifth aspect. In particular, the data transmission device comprises functional modules for performing the method of the fifth aspect or any one of the possible implementations of the fifth aspect.

In a twelfth aspect, a data transmission apparatus is provided for carrying out the method of the sixth aspect or any possible implementation manner of the sixth aspect. In particular, the data transmission device comprises functional modules for performing the method of the sixth aspect or any one of the possible implementations of the sixth aspect.

In a thirteenth aspect, an electronic device is provided, which includes: a transceiver, a memory, and a processor. Wherein the transceiver, the memory and the processor communicate with each other via an internal connection path, the memory is configured to store instructions, the processor is configured to execute the instructions stored by the memory to control the transceiver to receive signals and control the transceiver to transmit signals, and when the processor executes the instructions stored by the memory, the electronic device causes the processor to perform the method of the first aspect or any of the possible implementations of the first aspect.

In a fourteenth aspect, an electronic device is provided, which includes: a transceiver, a memory, and a processor. Wherein the transceiver, the memory and the processor communicate with each other via an internal connection path, the memory is configured to store instructions, the processor is configured to execute the instructions stored by the memory to control the transceiver to receive signals and control the transceiver to transmit signals, and when the processor executes the instructions stored by the memory, the electronic device causes the processor to execute the method of the second aspect or any of the possible implementations of the second aspect.

In a fifteenth aspect, an electronic device is provided, comprising: a transceiver, a memory, and a processor. Wherein the transceiver, the memory and the processor communicate with each other via an internal connection path, the memory is configured to store instructions, the processor is configured to execute the instructions stored by the memory to control the transceiver to receive signals and control the transceiver to transmit signals, and when the processor executes the instructions stored by the memory, the electronic device causes the processor to execute the method of any one of the possible implementations of the third aspect or the third aspect.

In a sixteenth aspect, an electronic device is provided, comprising: a transceiver, a memory, and a processor. Wherein the transceiver, the memory and the processor communicate with each other through an internal connection path, the memory is used for storing instructions, the processor is used for executing the instructions stored by the memory to control the transceiver to receive signals and control the transceiver to transmit signals, and when the processor executes the instructions stored by the memory, the electronic device causes the processor to execute the method of any one of the possible implementation manners of the fourth aspect or the fourth aspect.

In a seventeenth aspect, an electronic device is provided, comprising: a transceiver, a memory, and a processor. Wherein the transceiver, the memory, and the processor communicate with each other through an internal connection path, the memory is configured to store instructions, the processor is configured to execute the instructions stored by the memory to control the transceiver to receive signals and control the transceiver to transmit signals, and when the processor executes the instructions stored by the memory, the electronic device causes the processor to perform the method of any one of the possible implementations of the fifth aspect or the fifth aspect.

In an eighteenth aspect, there is provided an electronic device, comprising: a transceiver, a memory, and a processor. Wherein the transceiver, the memory, and the processor communicate with each other through an internal connection path, the memory is configured to store instructions, the processor is configured to execute the instructions stored by the memory to control the transceiver to receive signals and control the transceiver to transmit signals, and when the processor executes the instructions stored by the memory, the electronic device causes the processor to perform the method of any one of the possible implementations of the sixth aspect or the sixth aspect.

In a nineteenth aspect, a data transmission system is provided, which in one possible implementation manner includes:

a data transmission device according to a seventh aspect and a data transmission device according to an eighth aspect, or a data transmission device according to a ninth aspect and a data transmission device according to a tenth aspect, or a data transmission device according to an eleventh aspect and a data transmission device according to a twelfth aspect.

In another possible implementation, the system includes:

an electronic device according to a thirteenth aspect and an electronic device according to a fourteenth aspect, or an electronic device according to a fifteenth aspect and an electronic device according to a sixteenth aspect, or an electronic device according to a seventeenth aspect and an electronic device according to an eighteenth aspect.

In a twentieth aspect, a computer-readable storage medium is provided, in which a computer program is stored, the computer program being loaded and executed by a processor to implement the data transmission method provided in any one of the above aspects or any one of the possible implementations of any one of the above aspects.

In a twenty-first aspect, a chip is provided, the chip comprising a processor and/or program instructions, which when run, implement the data transmission method provided in any one of the above aspects or any one of the possible implementations of any one of the above aspects.

Drawings

Fig. 1 is an exemplary diagram of a wireless local area network 100 provided by an embodiment of the present disclosure;

fig. 2 is a schematic system structure diagram of a data transmission method provided in an embodiment of the present disclosure;

fig. 3 is a schematic system structure diagram of a data transmission method provided by an embodiment of the present disclosure;

fig. 4 is a schematic diagram of a communication flow in which only an AP supports full duplex according to an embodiment of the present disclosure;

fig. 5 is a schematic flow chart of a data transmission method provided by an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of an FD trigger frame according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of an FD trigger frame according to an embodiment of the present disclosure;

fig. 8 is a schematic diagram of a channel protection procedure provided by an embodiment of the present disclosure;

fig. 9 is a schematic flowchart of a data transmission method provided by an embodiment of the present disclosure;

fig. 10 is a schematic structural diagram of an FD RTS frame according to an embodiment of the present disclosure;

fig. 11 is a schematic diagram of a communication flow in which both an AP and an STA support full duplex according to an embodiment of the present disclosure;

fig. 12 is a schematic flow chart of a data transmission method provided by an embodiment of the present disclosure;

fig. 13 is a schematic structural diagram of an FD trigger frame according to an embodiment of the present disclosure;

fig. 14 is a schematic structural diagram of an FD trigger frame according to an embodiment of the present disclosure;

fig. 15 is a schematic flow chart of a data transmission method provided by an embodiment of the present disclosure;

fig. 16 is a schematic diagram of an FD EDCA parameter set element structure provided by an embodiment of the present disclosure;

fig. 17 is a schematic structural diagram of a data transmission device according to an embodiment of the present disclosure;

fig. 18 is a schematic structural diagram of a data transmission device according to an embodiment of the present disclosure;

fig. 19 is a schematic structural diagram of a data transmission device according to an embodiment of the present disclosure;

fig. 20 is a schematic structural diagram of a data transmission device according to an embodiment of the present disclosure;

fig. 21 is a schematic structural diagram of a data transmission device according to an embodiment of the present disclosure;

fig. 22 is a schematic structural diagram of a data transmission device provided in an embodiment of the present disclosure;

fig. 23 is a schematic structural diagram of a data transmission device according to an embodiment of the present disclosure;

fig. 24 is a schematic structural diagram of a data transmission device according to an embodiment of the present disclosure;

fig. 25 is a schematic structural diagram of a data transmission device according to an embodiment of the present disclosure;

fig. 26 is a schematic structural diagram of a data transmission device according to an embodiment of the present disclosure;

fig. 27 is a schematic structural diagram of an electronic device 2700 according to an embodiment of the present disclosure.

Detailed Description

Embodiments of the present disclosure will be described in further detail below with reference to the accompanying drawings.

Fig. 1 is an exemplary schematic diagram of a Wireless Local Area Network (WLAN) 100 according to an embodiment of the present disclosure. As shown in fig. 1, wireless local area network 100 includes an access point 102,

STAs

104 and 106, where

STAs

104 and 106 may communicate with AP 102 over a wireless link.

The standard currently used by WLANs is the Institute of Electrical and Electronics Engineers (IEEE) 802.11 series of standards. The WLAN may include a plurality of Basic Service Sets (BSSs), where a node of a basic service set is an STA, and the STA includes an AP (AP for short) and a Non-AP (Non-AP) STA, and each basic service set may include an AP and a plurality of Non-AP STAs associated with the AP, where it is noted that the

STAs

104 and 106 are Non-AP STAs, and the Non-AP STAs are referred to as STAs hereinafter.

An access point class STA, also referred to as a wireless access point or hotspot, etc. The AP is an access point for a mobile subscriber to enter a wired network, and is mainly deployed in a home, a building, and a campus, and typically has a coverage radius of several tens of meters to hundreds of meters, and may be deployed outdoors. The AP acts as a bridge to which a wired network and a wireless network are connected, and serves to connect STAs together and then to access the wireless network to the wired network. Specifically, the AP may be a terminal device or a network device with a wireless fidelity (WiFi) chip, such as a smart phone providing AP functions or services. Optionally, the AP may be a device supporting 802.11ax standard, and further optionally, the AP may be a device supporting multiple WLAN standards such as 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11 a.

The STA may be a wireless communication chip, a wireless sensor, or a wireless communication terminal. For example: the mobile phone supporting the WiFi communication function, the tablet computer supporting the WiFi communication function, the set top box supporting the WiFi communication function, the smart television supporting the WiFi communication function, the smart wearable device supporting the WiFi communication function, the vehicle-mounted communication device supporting the WiFi communication function and the computer supporting the WiFi communication function. Optionally, the STA may support an 802.11ax system, and further optionally, the STA supports multiple WLAN systems such as 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11 a.

It should be noted that, in the WLAN system 802.11ax after introducing an Orthogonal Frequency Division Multiple Access (OFDMA) technology, the AP may perform uplink and downlink transmission on different time-frequency resources for different STAs. The AP may use different modes for uplink and downlink transmission, such as an OFDMA single-user multiple-input multiple-output (SU-MIMO) mode, or an OFDMA multiple-user multiple-input multiple-output (MU-MIMO) mode.

It should be noted that, the data transmission method provided in the embodiment of the present disclosure may be applied to other communication systems besides the WLAN system, and the embodiment of the present disclosure does not limit this.

Fig. 2 is a schematic system structure diagram of a data transmission method according to an embodiment of the present disclosure. Referring to fig. 2, the system architecture includes: AP 201, STA202, and STA 203. Fig. 2 is directed to a scenario in which only the AP has full-duplex communication capability, and the AP simultaneously performs full-duplex transmission with class 2 STAs. One of which is a STA that receives data, such as STA202 in fig. 2, and the other of which is a STA that transmits data, such as STA203 in fig. 2. That is, STA202 may be one or more STAs that receive data, and STA203 may be one or more STAs that transmit data.

Among them, the AP 201 may transmit an FD trigger frame to the STA202 and the STA203 to indicate a time required for data transmission. STA203 may transmit data to AP 201 upon receiving the FD trigger frame, and at the same time, the AP may transmit data to STA 202. AP 201 and STA202, upon receiving the data, may reply with acknowledgement frames to STA203 and AP 201, respectively.

Fig. 3 is a schematic system structure diagram of a data transmission method according to an embodiment of the present disclosure. Referring to fig. 3, the system architecture includes: AP 301 and STA 302. Fig. 3 is a scenario in which both the AP and the STA have full-duplex communication capability, and in this scenario, the AP performs uplink and downlink transmission with the full-duplex STA at the same time. The full-duplex STA may receive data transmitted by the AP or transmit data to the AP, such as the STA302 in fig. 3, where the STA302 may be one or more full-duplex STAs.

Among them, the AP 301 may transmit an FD trigger frame to the STA302 to indicate a time required for data transmission. STA302 may transmit data to AP 301 upon receiving the FD trigger frame, and at the same time, the AP may transmit data to STA 302. AP 301 and STA302 may reply to each other with an acknowledgement frame after receiving the data.

It should be noted that the data transmission method according to the embodiment of the present disclosure is applicable to communication between an AP and an STA, but is also applicable to communication between an AP and an AP or communication between an STA and an STA. The embodiments of the present disclosure are described only by taking the communication between the AP and the STA as an example. The AP is an access point of a mobile user entering a wired network, and the STA is a non-access-point-type STA in a node of a basic service set. APs and STAs include, but are not limited to, communication servers, routers, switches, bridges, computers, cell phones, and the like.

Referring to fig. 4, fig. 4 is a schematic diagram of a communication flow in which only an AP supports full duplex according to an embodiment of the present disclosure, and as shown in fig. 4, the AP first sends an FD trigger frame to STA1 and STA 2; after receiving the FD trigger frame, STA2 sends data to the AP at a preset time interval (e.g., SIFS), and at this time, the AP sends data to STA 1; the STA1 and the AP transmit an acknowledgement frame after receiving the data. The STA1 refers to a STA that receives data during one data transmission, such as the STA202 in fig. 2, and the STA2 refers to a STA that transmits data during one data transmission, such as the STA203 in fig. 2. This will be described in detail below with reference to the embodiment shown in fig. 5.

Fig. 5 is a schematic flowchart of a data transmission method according to an embodiment of the present disclosure. The data transmission method is applied to a scenario where only the AP supports full duplex, and referring to fig. 5, the data transmission method includes the following steps:

501. the AP sends a full duplex FD trigger frame that includes a length field to indicate the time required for data transmission.

In the disclosed embodiments, the AP may send an FD trigger frame to STA1 and STA2 before data transmission to indicate the time required for data transmission. The STA1 refers to an STA that receives data in a data transmission process, i.e., a downlink STA, such as the STA202 in fig. 2; the STA2 refers to an STA that transmits data during one data transmission, i.e., an uplink STA, such as the STA203 in fig. 2.

Referring to fig. 6, fig. 6 is a schematic structural diagram of an FD trigger frame according to an embodiment of the present disclosure, where the FD trigger frame includes a frame control field, a duration/identification field, a downlink receiving STA address, an uplink sending STA address, a sending end address, a length field, and a frame check sequence field. The downlink receiving STA address may be a MAC address of the STA1, the uplink transmitting STA address may be a MAC address of the STA2, and the transmitting STA address may be a MAC address of the AP.

In one possible implementation, the length field is the same as the length field in the legacy signaling field in the legacy preamble of the uplink PPDU or the downlink PPDU, i.e., is used to spoof the legacy STAs so that the legacy STAs use the same 6Mbps rate and the length to obtain the time required for the data transmission, i.e., the time required for the uplink and downlink data transmission in full duplex communication.

Compared with the scheduling information frame in the prior art, the length field is added in the trigger frame, so that the time required by the data transmission in different uplink and downlink transmission directions can be ensured to be consistent, the AP and the STA1 can be ensured to simultaneously respond to the acknowledgement frame or respond to the acknowledgement frame in a specified sequence, the problem that the acknowledgement frame cannot be correctly received can be avoided, the problem that channel resources are preempted can be avoided, and the correct data transmission between the AP and the STA is ensured.

502. The AP transmits the first data of the designated length to the STA1 at a preset time interval after transmitting the FD trigger frame.

Wherein the preset time interval may be SIFS.

In the embodiment of the present disclosure, after sending the FD trigger frame, the AP may send the first data to the STA1 according to the length field in the FD trigger frame. The first data may be actual data to be transmitted, or data obtained by filling fields in the data to be transmitted.

In one possible implementation manner, when the time required for transmitting the data to be transmitted is equal to the time corresponding to the length field, the AP may directly send the data to be transmitted to the STA1 as the first data; when the time required for transmitting the data to be transmitted is less than the time corresponding to the length field, the AP may fill a default value (e.g., 0, 1) or a random value in the data to be transmitted to obtain the first data, so that the time required for transmitting the first data is equal to the time corresponding to the length field in the FD trigger frame.

503. The STA2 transmits the second data to the AP at a preset time interval after receiving the FD trigger frame.

In the embodiment of the present disclosure, the STA2, as the STA that sends data, may send the second data to the AP according to the length field in the FD trigger frame after receiving the FD trigger frame. The process of sending the second data is the same as the process of sending the first data, and is not described herein again. It should be noted that the transmission of the first data by the AP to the STA1 in step 502 and the transmission of the second data by the STA2 to the AP in step 503 are performed simultaneously, that is, the transmission time of the first data and the transmission time of the second data are the same.

504. STA1 receives the first data sent by the AP.

In the embodiment of the present disclosure, the first data is transmitted to the STA1 by the AP in step 502, so that the STA1 may receive the first data.

505. The AP receives the second data transmitted by STA 2.

In the embodiment of the present disclosure, the STA2 sends the second data to the AP in step 503, so that the AP may receive the second data.

It should be noted that, when the transmission time of the first data and the second data is the same and the time required for transmission is also the same, the first data and the second data may be received simultaneously, that is, the first data received by the STA1 in step 504 and the second data received by the AP in step 505 may be performed simultaneously.

506. STA1 sends an acknowledgement frame of the first data to the AP.

In the embodiment of the present disclosure, after receiving the first data, the STA1 transmits an acknowledgement frame of the first data to the AP as a response to the first data.

507. The AP sends an acknowledgement frame for the second data to STA 2.

In the disclosed embodiment, after receiving the second data, the AP may send an acknowledgement frame of the second data to the STA2 in response to the second data.

It should be noted that the acknowledgement frame for the STA1 to send the first data to the AP in step 506 and the acknowledgement frame for the AP to send the second data to the STA2 in step 507 may be performed simultaneously or in a specified sequence. Specifically, the transmission process of the acknowledgement frame of the second data and the acknowledgement frame of the first data includes, but is not limited to, the following several possible implementations:

in a first possible implementation manner, a preset time interval is preconfigured in the full-duplex transmission protocol, and accordingly, the STA1 sends an acknowledgement frame of the first data to the AP after receiving the first data by the preset time interval; the AP transmits an acknowledgement frame of the second data to the STA2 at the preset time interval after receiving the second data.

In the method, the full-duplex transmission protocol specifies that the STA1 and the AP send the acknowledgement frame at the same time interval (such as SIFS) after receiving the data, so that the STA1 and the AP can send the acknowledgement frame at the same time, and the air interface transmission time is saved.

It is understood that this manner is exemplified by the fact that a predetermined time interval is defined in the full-duplex transmission protocol, and the STA1 and the AP transmit the acknowledgement frame at the same time interval after receiving the data. Accordingly, the STA1 transmits an acknowledgement frame of the first data to the AP at a first preset time interval after receiving the first data; the AP transmits an acknowledgement frame of the second data to the STA2 at a second preset time interval after receiving the second data. That is, the STA1 and the AP transmit acknowledgement frames at different time intervals after receiving the data.

It should be noted that, this manner is described by taking an example that the preset time interval is pre-configured by the full duplex transmission protocol, and actually, the preset time interval may also be determined by other manners, for example, a time interval field may be included in the FD trigger frame, and the time interval field is used to indicate the preset time interval. The embodiments of the present disclosure do not limit this.

In a second possible implementation manner, a transmission sequence of the acknowledgment frame of the second data and the acknowledgment frame of the first data and a transmission time difference of the acknowledgment frame of the second data and the acknowledgment frame of the first data are preconfigured in the full-duplex transmission protocol, and accordingly, the STA1 may transmit the acknowledgment frame of the first data to the AP according to the transmission sequence and the transmission time difference; the AP may transmit an acknowledgement frame for the second data to the STA2 according to the transmission sequencing and the transmission time difference.

In this manner, which type of acknowledgement frame (acknowledgement frame of the second data or acknowledgement frame of the first data) is transmitted first and the transmission time difference of the two types of acknowledgement frames are specified in the full-duplex transmission protocol, so that the STA1 and the AP can transmit the acknowledgement frames according to the sequence and the transmission time difference specified in the full-duplex transmission protocol.

It should be noted that, this mode is described by taking an example that the order of sending the acknowledgement frames and the sending time difference are configured in advance by a full duplex transmission protocol, and may actually be determined by other modes, as described in the following fourth possible implementation manner. The embodiments of the present disclosure do not limit this.

In a third possible implementation manner, the FD trigger frame further includes a transmission time of the acknowledgement frame of the second data and the acknowledgement frame of the first data, and accordingly, the STA1 may transmit the acknowledgement frame of the first data to the AP according to the transmission time; the AP may transmit an acknowledgement frame of the second data to the STA2 according to the transmission time.

Referring to fig. 7, fig. 7 is a schematic structural diagram of an FD trigger frame according to an embodiment of the present disclosure, where the FD trigger frame includes a frame control field, a duration/identification field, a downlink receiving STA address (e.g., a MAC address of STA 1), an uplink transmitting STA address (e.g., a MAC address of STA 2), an uplink acknowledgement frame transmission time, a downlink acknowledgement frame transmission time, a transmitting end address (e.g., a MAC address of an AP), a length field, and a frame check sequence field. The uplink acknowledgement frame transmission time is the transmission time of the acknowledgement frame of the first data, and the downlink acknowledgement frame transmission time is the transmission time of the acknowledgement frame of the second data.

This is so that the FD trigger frame transmitted by the AP to STA1 and STA2 indicates a specific time when STA1 and the AP transmit the acknowledgement frame after receiving data, so that STA1 and the AP can transmit the acknowledgement frame according to the transmission time indicated by the FD trigger frame.

In a fourth possible implementation manner, a transmission sequence of the acknowledgment frame of the second data and the acknowledgment frame of the first data is preconfigured in the full-duplex transmission protocol, and the FD trigger frame further includes a transmission time difference between the acknowledgment frame of the second data and the acknowledgment frame of the first data, and accordingly, the STA1 may transmit the acknowledgment frame of the first data to the AP according to the transmission sequence and the transmission time difference; the AP may transmit an acknowledgement frame for the second data to the STA2 according to the transmission sequencing and the transmission time difference.

The mode specifies which type of acknowledgement frame is sent first in the full duplex transmission protocol, and the FD trigger frame indicates the sending time difference of the two types of acknowledgement frames, so that the STA1 and the AP can send the acknowledgement frames according to the sequence specified in the full duplex transmission protocol and the sending time difference indicated by the FD trigger frame.

The STA1 and the AP may perform the transmission of the acknowledgement frame through any one of the above possible implementations, and since the data transmitted by the AP and the data transmitted by the STA2 are consistent in time used in the transmission process, the time when the STA1 and the AP receive the data is consistent, that is, the first data and the second data in different uplink and downlink transmission directions may complete the transmission process at the same time. Therefore, no matter the STA1 and the AP reply the acknowledgement frame first, the problem that the acknowledgement frame cannot be correctly received due to the collision between the acknowledgement frame sent first and the data transmission not yet completed can be avoided, and the problem that the channel for sending the acknowledgement frame is preempted by the third-party STA due to the data received by the STA1 and the AP in sequence can also be avoided.

508. The AP receives the acknowledgement frame of the first data sent by STA 1.

In the embodiment of the present disclosure, the STA1 sends the AP an acknowledgement frame of the first data in step 506, so that the AP may receive the acknowledgement frame of the first data.

509. The STA2 receives the acknowledgement frame of the second data sent by the AP.

In the embodiment of the present disclosure, the STA2 may receive the acknowledgement frame of the second data by the AP transmitting the acknowledgement frame of the second data to the STA2 in step 507.

Through the above steps 508 and 509, the AP and the STA2 complete the data transmission process after receiving the acknowledgement frame of the data transmitted by the AP and the STA 2.

It should be noted that, in the embodiment of the present disclosure, communication between the AP and the STA is taken as an example for description, and actually, the data transmission method provided in steps 501 to 509 is also applicable to communication between the AP and the AP or communication between the STA and the STA, for example, the communication process between the AP and the STA1 and the STA2 may be applicable to the communication process between the AP and the AP 1 and the AP 2 and between the full-duplex STA (such as the STA302 in fig. 3) and the STA1 and the STA 2.

Referring to fig. 8, fig. 8 is a schematic diagram of a channel protection procedure provided in an embodiment of the present disclosure, and as shown in fig. 8, an AP first sends an FD RTS frame, and then an STA1 and an STA2 reply to a CTS frame at the same time, so that the sending time of the CTS frame is the same. In addition, the CTS frame employs the same scrambling code initial state and modulation coding parameters as the FD RTS frame, so that the CTS frames transmitted by STA1 and STA2 contain the same content. This channel protection procedure may be performed before step 501 in the embodiment shown in fig. 5, which will be described in detail below with reference to the embodiment shown in fig. 9.

Fig. 9 is a schematic flowchart of a data transmission method according to an embodiment of the present disclosure. The data transmission method is applied to a scenario where only the AP supports full duplex, and referring to fig. 9, the data transmission method includes the following steps:

901. the AP sends an FD RTS frame.

In the disclosed embodiments, the AP may send an FD RTS frame to STA1 and STA2 prior to data transmission. Referring to fig. 10, fig. 10 is a schematic structural diagram of an FD RTS frame according to an embodiment of the present disclosure, where the FD RTS frame includes a frame control field, a duration/identification field, a downlink receiving STA address (e.g., a MAC address of STA 1), an uplink transmitting STA address (e.g., a MAC address of STA 2), a transmitting end address (e.g., a MAC address of an AP), and a frame check sequence field.

It should be noted that the FD RTS frame shown in fig. 10 is only one example of the embodiment of the present disclosure, and the FD RTS frame may also be in other forms, for example, the FD RTS frame may be a variant of an 802.11ax multiple start frame, and also includes a common information field and multiple STA information fields, but each STA information field includes an uplink/downlink identifier.

902. Upon receiving the FD RTS frame, the STA1 sends a first CTS frame to the AP.

The first CTS frame may adopt the same scrambling code initial state and modulation coding parameters as the FD RTS frame.

In the disclosed embodiment, the STA1 may send a first CTS frame to the AP upon receiving the FD RTS frame. Of course, the STA1 may also send the first CTS frame a preset time interval (e.g., SIFS) after receiving the FD RTS frame, where the preset time interval may be specified by a full duplex transmission protocol.

903. Upon receiving the FD RTS frame, the STA2 sends a second CTS frame to the AP.

The second CTS frame may adopt the same scrambling code initial state and modulation coding parameters as the FD RTS frame.

In the disclosed embodiment, the STA2 may send a second CTS frame to the AP upon receiving the FD RTS frame. Like the first CTS frame, the STA2 may also send the second CTS frame a predetermined time interval (e.g., SIFS) after receiving the FD RTS frame.

It should be noted that the transmission of the first CTS frame by the STA1 to the AP in step 902 and the transmission of the second CTS frame by the STA2 to the AP in step 903 may be performed simultaneously, that is, the transmission time of the first CTS frame and the transmission time of the second CTS frame are the same. In addition, because the first CTS frame and the second CTS frame both adopt the same scrambling code initial state and modulation coding parameters as those of the FD RTS frame, the first CTS frame and the second CTS frame contain the same content.

904. The AP receives a first CTS frame sent by the STA1 and a second CTS frame sent by the STA2, where the first CTS frame and the second CTS frame are sent at the same time and contain the same content.

In the disclosed embodiment, CTS frames are sent to the AP simultaneously for STA1 and STA2 so that the AP may receive the first CTS frame and the second CTS frame containing the same content simultaneously. Compared with the prior art that the CTS frames are sequentially sent by the STA1 and the STA2 in the channel protection process, which wastes air interface transmission time and is prone to channel protection failure caused by the fact that a certain STA does not reply to the CTS frame, the channel protection process disclosed by the present disclosure has the advantages that the air interface transmission time is saved by simultaneously sending the CTS frames by a plurality of STAs, the unreliability of sending the CTS frames by a plurality of STAs in turn is also avoided, and the success rate of channel protection is improved.

In addition, the STA1 and the STA2 may also be extended to STA set 1 and STA set 2, where the STA set 1 and the STA set 2 include a plurality of STAs respectively.

The steps 901 to 904 are a channel protection process, and after the channel protection is performed, data transmission may be performed between the AP and the STA, where the specific process refers to the following step 905.

905. The AP performs data transmission with STA1 and STA 2.

In the embodiment of the present disclosure, the step 905 may include steps 501 to 509 in the embodiment shown in fig. 5. Of course, the step 905 may not include the sending process of the FD trigger frame, but only include the data transmission process. That is, after the FD RTS/CTS frame exchange, i.e., after the channel is protected by the FD RTS/CTS frame, the AP may directly send data to the STA1, while the STA2 sends data to the AP. Upon receipt of the data, STA1 replies with an acknowledgement frame to the AP, which replies with an acknowledgement frame to STA 2.

It should be noted that, in the embodiment of the present disclosure, communication between the AP and the STA is taken as an example for description, and actually, the data transmission method provided in steps 901 to 905 is also applicable to communication between the AP and the AP or communication between the STA and the STA, for example, the communication process between the AP and the STA1 and the STA2 may be applicable to the communication process between the AP and the AP 1 and the AP 2 and between the full-duplex STA (such as the STA302 in fig. 3) and the STA1 and the STA 2.

Referring to fig. 11, fig. 11 is a schematic diagram of a communication flow in which both an AP and an STA support full duplex according to an embodiment of the present disclosure, and as shown in fig. 11, the AP first sends an FD trigger frame to the STA; after receiving the FD trigger frame, the STA sends data to the AP at a preset time interval (such as SIFS), and the AP sends the data to the STA at the same time; the STA and the AP transmit an acknowledgement frame after receiving the data. This will be described in detail below with reference to the embodiment shown in fig. 12.

Fig. 12 is a schematic flowchart of a data transmission method according to an embodiment of the present disclosure. The data transmission method is applied to a scene that both the AP and the STA support full duplex. Referring to fig. 12, the data transmission method includes the steps of:

1201. the AP sends a full duplex FD trigger frame that includes a length field to indicate the time required for data transmission.

In the embodiment of the present disclosure, the AP may send an FD trigger frame to the full-duplex STA before data transmission is performed, so as to indicate time required for data transmission. The full-duplex STA refers to an STA that receives data and transmits data simultaneously in one data transmission process, such as the STA302 in fig. 3.

Referring to fig. 13, fig. 13 is a schematic structural diagram of an FD trigger frame according to an embodiment of the present disclosure, where the FD trigger frame includes a frame control field, a duration/identification field, an STA address, a sending end address, a length field, and a frame check sequence field. The STA address may be a MAC address of an STA that receives the FD trigger frame, and the sending end address may be a MAC address of an AP that sends the FD trigger frame.

1202. And the AP sends first data to the full-duplex STA at a preset time interval after sending the FD trigger frame.

1203. And the full-duplex STA sends second data to the AP at a preset time interval after receiving the FD trigger frame.

1204. The full-duplex STA receives first data transmitted by the AP.

1205. The AP receives second data transmitted by the full-duplex STA.

1206. The full-duplex STA transmits an acknowledgement frame of the first data to the AP.

1207. The AP sends an acknowledgement frame for the second data to the full-duplex STA.

It should be noted that, the process of the full-duplex STA sending the acknowledgement frame of the first data to the AP in step 1206 and the process of the AP sending the acknowledgement frame of the second data to the full-duplex STA in step 1207 are the same as step 507 in the embodiment shown in fig. 5, and when the third possible implementation manner is adopted to send the acknowledgement frame, the FD trigger frame further includes the sending time of the acknowledgement frame of the second data and the acknowledgement frame of the first data.

Referring to fig. 14, fig. 14 is a schematic structural diagram of an FD trigger frame according to an embodiment of the present disclosure, where the FD trigger frame includes a frame control field, a duration/identification field, an STA address (e.g., an MAC address of an STA), an uplink acknowledgement frame sending time, a downlink acknowledgement frame sending time, a sending end address (e.g., an MAC address of an AP), a length field, and a frame check sequence field. The uplink acknowledgement frame transmission time is the transmission time of the acknowledgement frame of the first data, and the downlink acknowledgement frame transmission time is the transmission time of the acknowledgement frame of the second data.

1208. The AP receives an acknowledgement frame of first data transmitted by the full-duplex STA.

1209. The full-duplex STA receives an acknowledgement frame of the second data transmitted by the AP.

Steps 1201 to 1209 are similar to steps 501 to 509 in the embodiment shown in fig. 5, and are not repeated here.

It should be noted that, in the embodiment of the present disclosure, communication between the AP and the STA is taken as an example for description, and actually, the data transmission method provided in steps 1201 to 1209 is also applicable to communication between the AP and the AP or communication between the STA and the STA.

The method provided by the embodiment of the disclosure aims at a communication scene that both the AP and the STA support full duplex, and the AP sends a trigger frame comprising a length field to the STA before sending data. The length field indicates that the time required by the uplink and downlink data transmission in full duplex is the same, so that the time for the data sent by the STA to reach the AP is consistent with the time for the data sent by the AP to reach the STA, and the data transmission in different transmission directions of the uplink and the downlink is finished at the same time. Therefore, the AP and the STA can simultaneously respond to the confirmation frame or respond to the confirmation frame in the appointed sequence, thereby not only avoiding the problem that the confirmation frame cannot be correctly received, but also avoiding the problem that channel resources are preempted, and ensuring correct data transmission between the AP and the STA.

For the communication flow in which only the AP supports full duplex in the embodiment shown in fig. 5, and the communication flow in which both the AP and the STA support full duplex in fig. 11, the AP occupies the channel, and then the STAs participating in data transmission in the full duplex transmission process all obtain the transmission opportunity, the STA may be a half-duplex STA, such as the STA2 in the embodiment shown in fig. 5, or a full-duplex STA, such as the STA in the embodiment shown in fig. 12. However, it is unfair in obtaining data transmission opportunities relative to other STAs not participating in full duplex transmission. Based on the fairness principle, the embodiment of the disclosure provides that after receiving an acknowledgement frame of data, an STA participating in data transmission in a full-duplex transmission process updates an existing EDCA parameter with an FD EDCA parameter, so as to reduce the priority of channel access. This parameter update process may be performed after step 509 in the embodiment shown in fig. 5 or step 1209 in the embodiment shown in fig. 12, which will be described in detail in conjunction with the embodiment shown in fig. 15.

Fig. 15 is a flowchart illustrating a data transmission method according to an embodiment of the present disclosure. The data transmission method is applied to a scene that only the AP supports full duplex or a scene that both the AP and the STA support full duplex. Referring to fig. 15, the data transmission method includes the steps of:

1501. the AP sends a full duplex FD trigger frame that includes a length field to indicate the time required for data transmission.

In the embodiment of the present disclosure, the AP may send an FD trigger frame to the STA before performing data transmission, so as to indicate a time required for performing data transmission. For a communication scenario where only the AP supports full duplex, the STA may be STA2 in the embodiment shown in fig. 5. In this case, step 1501 is the same as step 501 in the embodiment shown in fig. 5.

For a communication scenario where both the AP and the STA support full duplex, the STA may be the STA in the embodiment shown in fig. 12. In this case, the step 1501 is the same as the step 1201 in the embodiment shown in fig. 12, and is not described again here.

1502. And the STA sends data to the AP at a preset time interval after receiving the FD trigger frame.

The data may be the second data in the embodiment shown in fig. 5, or may be the second data in the embodiment shown in fig. 12.

Step 1502 is the same as step 503 in the embodiment shown in fig. 5 and step 1203 in the embodiment shown in fig. 12, and will not be described again here.

It should be noted that, the embodiment of the present disclosure is described by taking an example that the STA sends data to the AP, and actually, the AP sends data to the STA while the STA sends data to the AP, that is, the embodiment of the present disclosure may further include the following steps: the AP transmits data to the STA at a preset time interval after transmitting the FD trigger frame, as in step 502 in the embodiment shown in fig. 5 and step 1202 in the embodiment shown in fig. 12.

1503. The AP receives data transmitted by the STA.

Step 1503 is the same as step 505 in the embodiment shown in fig. 5 and step 1205 in the embodiment shown in fig. 12, and will not be described again here.

It should be noted that, the embodiment of the present disclosure is described by taking an example that the AP receives data sent by the STA, and in fact, while the AP receives the data sent by the STA, the STA may also receive the data sent by the AP, that is, the embodiment of the present disclosure may further include the following steps: the STA receives the data transmitted by the AP, as in step 504 in the embodiment shown in fig. 5 and step 1204 in the embodiment shown in fig. 12.

1504. The AP sends an acknowledgement frame of the data to the STA.

The acknowledgment frame may be the acknowledgment frame of the second data in the embodiment shown in fig. 5, or may be the acknowledgment frame of the second data in the embodiment shown in fig. 12.

Step 1504 is the same as step 507 in the embodiment shown in fig. 5 and step 1207 in the embodiment shown in fig. 12, and will not be described again here.

It should be noted that, the embodiment of the present disclosure is described by taking an example in which the AP sends the acknowledgment frame to the STA, and actually, the STA also sends the acknowledgment frame to the AP, that is, the embodiment of the present disclosure may further include the following steps: the STA sends an acknowledgement frame to the AP, as in step 506 in the embodiment shown in fig. 5 and step 1206 in the embodiment shown in fig. 12.

1505. The STA receives the acknowledgement frame sent by the AP.

In the embodiment of the present disclosure, the AP sends an acknowledgement frame to the STA in step 1504, so that the STA can receive the acknowledgement frame.

It should be noted that, the embodiment of the present disclosure only takes the STA receiving the acknowledgment frame sent by the AP as an example for description, and actually, the AP may also receive the acknowledgment frame sent by the STA, that is, the embodiment of the present disclosure may further include the following steps: the AP receives the acknowledgement frame sent by the STA, as shown in step 508 in the embodiment shown in fig. 5 and step 1208 in the embodiment shown in fig. 12.

Through the above steps 1501 to 1505, the STA completes the present full duplex communication process after receiving the acknowledgement frame sent by the AP. The steps 1501 to 1505 only show the communication steps between the STA and the AP participating in data transmission in the full-duplex transmission process, and this embodiment is not limited to the implementation in which steps 1501 to 1505 indicate full-duplex communication, but may also be other full-duplex implementations, for example, when the STA participating in data transmission is the STA2 in the embodiment shown in fig. 5, the communication process may further include the communication steps between the STA1 and the AP in the embodiment shown in fig. 5, that is, the communication process includes the above steps 501 to 509; when the STA participating in data transmission is the STA in the embodiment shown in fig. 12, the communication procedure includes the above-described steps 1201 to 1209.

After a full duplex successful communication, the STAs participating in the data transmission may perform the subsequent steps 1506 to 1508.

1506. STA updates existing EDCA parameters including CWmin [ AC ], CWmax [ AC ], AIFSN [ AC ], and FD EDCATimeter [ AC ] using FD EDCA parameters.

The FD edcaitimer [ AC ] is used to indicate how long the STA recovers to the EDCA parameters before updating, i.e. the parameter update of step 1506 is not permanent but only updated within a certain period of time.

In one possible implementation, the FD EDCA parameter is carried in an element form in a management frame sent by the AP, where the management frame may be a beacon frame or an association response frame. For example, the STA may also receive a management frame transmitted by the AP when receiving the acknowledgement frame transmitted by the AP or before receiving the acknowledgement frame transmitted by the AP, so that the STA may acquire the FD EDCA parameter from the management frame.

In addition, the existing EDCA parameters stored locally by the STA may be contained in the FD AC parameter record field in the existing EDCA parameter set element structure. Each FD AC parameter record field includes the existing EDCA parameters, i.e., 4 parameters such as CWmin [ AC ], CWmax [ AC ], AIFSN [ AC ], and FD EDCATIMETER [ AC ]. The existing EDCA parameter set element structure is the same as the FD EDCA parameter set element structure, i.e. contains the same fields, but different parameters.

Referring to fig. 16, fig. 16 is a schematic diagram of an FD EDCA parameter set element structure provided in an embodiment of the present disclosure, where the FD AC parameter record includes an FD AC _ BE parameter record, an FD AC _ BK parameter record, an FD AC _ VI parameter record, and an FD AC _ VO parameter record. For example, the FD AC _ BE parameter record, the FD AC _ BK parameter record, the FD AC _ VI parameter record, and the FD AC _ VO parameter record in fig. 16 each include the above-described 4 parameters.

In a possible implementation manner, the channel access priority of the FD EDCA parameter is smaller than that of the existing EDCA parameter, so that the STA can reduce the priority of channel access of the STA after updating the existing EDCA parameter by using the FD EDCA parameter, so that the STA and other STAs which do not participate in full duplex have fairness in the transmission opportunity. The specific reduction of the priority can be determined by the AP according to the transmission condition of the current communication system.

1507. And determining the effective duration of the update according to the updated FD EDCATime [ AC ].

In the embodiment of the present disclosure, after the STA performs the update process in step 1506, the updated value of FD edcaitimer [ AC ] may be determined as the effective duration of the current update, and then the STA performs the following step 1508.

1508. And when the updating time length reaches the effective time length, restoring the existing EDCA parameters to the state before the updating.

In the embodiment of the present disclosure, the STA only keeps the updated EDCA parameter in the valid duration, that is, only reduces the channel access priority of the STA for a period of time, so that the STA has a fair transmission opportunity with other STAs not participating in full duplex for a period of time.

The above steps 1507 to 1508 are optional steps, that is, the STA may implement the update for a period of time by performing steps 1507 to 1508, or may implement the update by performing steps 1505 to 1506 after receiving the acknowledgement frame sent by the AP next time without performing steps 1507 to 1508.

It should be noted that, in the embodiment of the present disclosure, communication between the AP and the STA is taken as an example for description, and actually, the data transmission method provided in steps 1501 to 1508 is also applicable to communication between the AP and the AP or communication between the STA and the STA.

Fig. 17 is a schematic structural diagram of a data transmission device according to an embodiment of the present disclosure. Referring to fig. 17, the apparatus includes a transmitting module 1701 and a receiving module 1702:

the sending module 1701 is configured to send an FD trigger frame, where the FD trigger frame includes a length field, and the length field is used to indicate a time required for data transmission;

the sending module 1701 is further configured to send first data to an STA to receive data at a preset time interval after sending the FD trigger frame;

the receiving module 1702, configured to receive second data sent by the STA sending the data, where the second data is sent by the STA sending the data after receiving the FD trigger frame by the preset time interval;

the sending module 1701 is further configured to send an acknowledgement frame of the second data to the STA sending the data;

the receiving module 1702 is further configured to receive an acknowledgement frame of the first data sent by the STA to receive the data.

In one possible implementation, the sending module 1701 is configured to execute the process of sending the acknowledgement frame in step 507 and step 1207 described above.

In one possible implementation, the length field is the same as the length field in the legacy signaling field in the legacy preamble in the uplink PPDU or the downlink PPDU.

In one possible implementation, referring to fig. 18, the apparatus further includes a filling module 1703:

the padding module 1703 is configured to perform the process of sending the first data in steps 502 and 1202 and the process of sending the second data in steps 1202 and 1203.

In one possible implementation, the STA to receive data and the STA to transmit data are the same STA.

It should be noted that the sending module 1701 may be implemented by a sender of an electronic device, the receiving module 1702 may be implemented by a receiver of the electronic device, and the filling module 1703 may be implemented by a processor of the electronic device.

Fig. 19 is a schematic structural diagram of a data transmission device according to an embodiment of the present disclosure. Referring to fig. 19, the apparatus includes a receiving module 1901 and a transmitting module 1902:

a receiving module 1901, configured to receive an FD trigger frame, where the FD trigger frame includes a length field, and the length field is used to indicate time required for data transmission;

a transmission module 1902, configured to perform data transmission with the device that sent the FD trigger frame.

In one possible implementation, the transmission module 1902 is configured to perform the above-mentioned process of receiving the first data by the STA1 in step 504 and sending the acknowledgement frame of the first data in step 506.

In one possible implementation, the transmission module 1902 is configured to perform the above-described process of sending the acknowledgement frame of the first data in step 506.

In one possible implementation, the transmission module 1902 is configured to perform the above-mentioned process of the STA2 sending the second data in step 503 and the process of receiving the acknowledgement frame of the second data in step 509.

In a possible implementation manner, the transmission module 1902 is configured to perform the process of sending the second data in step 1193, the process of receiving the first data in step 1194, the process of sending the acknowledgement frame of the first data in step 1196, and the process of receiving the acknowledgement frame of the second data in step 1199.

In one possible implementation, referring to fig. 20, the apparatus further includes:

a padding module 1903, configured to perform the process of sending the first data in step 502 and step 1192 and the process of sending the second data in step 1192 and step 1193.

It should be noted that the receiving module 1901 may be implemented by a receiver of an electronic device, the transmitting module 1902 may be implemented by a transmitter or a receiver of the electronic device, and the filling module 1903 may be implemented by a processor of the electronic device.

Fig. 21 is a schematic structural diagram of a data transmission device according to an embodiment of the present disclosure. Referring to fig. 21, the apparatus includes a transmission module 2101, a reception module 2102, and a transmission module 2103:

a sending module 2101 configured to send an FD RTS frame;

a receiving module 2102, configured to receive a first CTS frame sent by an STA to receive data and a second CTS frame sent by the STA to send data, where the first CTS frame and the second CTS frame are sent at the same time and contain the same content;

a transmission module 2103, configured to perform data transmission with the STA to receive data and the STA to send data.

In one possible implementation, the first CTS frame and the second CTS frame employ the same scrambling code initial state and modulation coding parameters as the FD RTS frame.

It should be noted that the sending module 2101 may be implemented by a sender of an electronic device, the receiving module 2102 may be implemented by a receiver of the electronic device, and the transmitting module 2103 may be implemented by the sender and the receiver of the electronic device.

Fig. 22 is a schematic structural diagram of a data transmission device according to an embodiment of the present disclosure. Referring to fig. 22, the apparatus includes a receiving module 2201, a receiving module 2202, and a transmitting module 2203:

a receiving module 2201, configured to receive an FD RTS frame;

a sending module 2202 configured to send a clear to send CTS frame to the device that sent the FD RTS frame;

a transmission module 2203, configured to perform data transmission with the device.

In one possible implementation, the CTS frame employs the same scrambling code initial state and modulation coding parameters as the FD RTS frame.

It should be noted that the receiving module 2201 may be implemented by a receiver of an electronic device, the transmitting module 2202 may be implemented by a transmitter of the electronic device, and the transmitting module 2203 may be implemented by a transmitter or a receiver of the electronic device.

It should be noted that: in the data transmission device provided in the above embodiment, when transmitting data, only the division of the above functional modules is used for illustration, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules, so as to complete all or part of the above described functions. In addition, the data transmission device and the data transmission method provided by the above embodiments belong to the same concept, and specific implementation processes thereof are described in the method embodiments and are not described herein again.

Fig. 23 is a schematic structural diagram of a data transmission device according to an embodiment of the present disclosure. Referring to fig. 23, the apparatus includes a transmitting module 2301, a receiving module 2302, and an updating module 2303:

a sending module 2301, configured to send data to a device that sends the FD trigger frame after receiving the FD trigger frame;

a receiving module 2302, configured to receive an acknowledgement frame of the data sent by the device;

an updating module 2303 for updating existing EDCA parameters including contention window CWmin [ AC ], CWmax [ AC ], arbitration frame space number AIFSN [ AC ], and FD edcaitimeter [ AC ] using full duplex enhanced distributed channel access FD EDCA parameters.

In one possible implementation, the FD EDCA parameter has a channel access priority less than the existing EDCA parameter.

In one possible implementation, referring to fig. 24, the apparatus further includes:

a determining module 2304, configured to execute the process of determining the effective duration in step 1503;

a restoring module 2305, configured to perform the process of restoring the state before updating in step 1504.

In one possible implementation, the existing EDCA parameters are contained in an FD AC parameter record field in an existing EDCA parameter set element structure, which is the same as the FD EDCA parameter set element structure.

In one possible implementation, the FD AC parameter records include an FD AC _ BE parameter record, an FD AC _ BK parameter record, an FD AC _ VI parameter record, and an FD AC _ VO parameter record.

In one possible implementation, the FD EDCA parameter is carried in the form of an element in a management frame sent by the AP; referring to fig. 25, the apparatus further comprises:

the receiving module 2302 is further configured to perform the process of receiving the management frame in step 1506;

an obtaining module 2306, configured to perform the process of obtaining the FD EDCA parameter in step 1506.

It is noted that the transmitting module 2301 can be implemented by a transmitter of an electronic device, the receiving module 2302 can be implemented by a receiver of the electronic device, and the updating module 2303, the determining module 2304, the recovering module 2305 and the determining template 2306 can be implemented by a processor of the electronic device.

Fig. 26 is a schematic structural diagram of a data transmission device according to an embodiment of the present disclosure. Referring to fig. 26, the apparatus includes a transmitting module 2601 and a receiving module 2602:

a sending module 2601, configured to send a full-duplex FD trigger frame, where the FD trigger frame includes a length field, and the length field is used to indicate time required for data transmission;

a receiving module 2602, configured to receive data sent by the STA, where the data is sent by the STA at a preset time interval after receiving the FD trigger frame;

the transmitting module 2601 is further configured to transmit an acknowledgement frame of the data to the STA.

In a possible implementation manner, the sending module 2601 is further configured to perform the process of sending the management frame in step 1504.

It is noted that the transmitting module 2601 may be implemented by a transmitter of an electronic device, and the receiving module 2602 may be implemented by a receiver of the electronic device.

Fig. 27 is a schematic structural diagram of an electronic device 2700 according to an embodiment of the present disclosure. The electronic device 2700 may be provided as an AP or an STA. Referring to fig. 27, the electronic device 2700 may include a processor 2710 and a memory 2720, and may further include a transceiver 2730. The memory 2720 stores a computer program, and the processor 2710 is configured to execute the computer program stored in the memory 2720. When the electronic device 2700 is provided as an AP, the computer program performs the data transmission method on the AP side in the above-described embodiments, and when the electronic device 2700 is provided as an STA, the computer program performs the data transmission method on the STA side in the above-described embodiments.

The processor 2710 receives commands from other elements, decrypts the received commands, and performs calculation or data processing according to the decrypted commands. The memory 2720 may include program modules such as a kernel (kernel), middleware (middleware), an Application Programming Interface (API), and an application. The program modules may be comprised of software, firmware or hardware, or at least two of the same.

When the electronic device 2700 is provided as an AP, the processor 2710 controls the transceiver 2730 to perform: sending an FD trigger frame, wherein the FD trigger frame comprises a length field which is used for indicating the time required by data transmission; transmitting first data to an STA (station) to receive data at a preset time interval after the FD trigger frame is transmitted; receiving second data sent by the STA sending the data, wherein the second data is sent by the STA sending the data at the preset time interval after the FD trigger frame is received; transmitting an acknowledgement frame of the second data to the STA transmitting the data; and receiving the acknowledgement frame of the first data sent by the STA of the data to be received.

In one possible implementation, processor 2710 controls the transceiver to perform: and sending an acknowledgement frame of the second data to the STA sending the data at the preset time interval after receiving the second data.

In one possible implementation, processor 2710 controls the transceiver to perform: and sending the acknowledgement frame of the second data to the STA sending the data according to the preset acknowledgement frame sending sequence and sending time difference.

In one possible implementation, the processor 2710 performs: and when the time required by the data to be transmitted is less than the time corresponding to the length field, filling a default value or a random value into the data to be transmitted, so that the time required by the data to be transmitted is equal to the time corresponding to the length field in the FD trigger frame.

Alternatively, when the electronic device 2700 is provided as an AP, the processor 2710 controls the transceiver 2730 to perform: sending an FD RTS frame; receiving a first CTS frame sent by an STA (station) to receive data and a second CTS frame sent by the STA to send the data, wherein the first CTS frame and the second CTS frame have the same sending time and the same content; and performing data transmission with the STA to receive the data and the STA to send the data.

Alternatively, when the electronic device 2700 is provided as an AP, the processor 2710 controls the transceiver 2730 to perform: sending an FD trigger frame, wherein the FD trigger frame comprises a length field which is used for indicating the time required by data transmission; receiving data sent by an STA, wherein the data is sent by the STA at a preset time interval after the FD trigger frame is received; an acknowledgement frame of the data is sent to the STA.

In one possible implementation, the processor 2710 also controls the transceiver 2730 to perform: and sending a management frame to the STA, wherein the management frame carries the FD EDCA parameter, and the FD EDCA parameter is used for updating the existing EDCA parameter of the STA.

When the electronic device 2700 is provided as an STA, the processor 2710 controls the transceiver 2730 to perform: receiving an FD trigger frame, the FD trigger frame including a length field for indicating a time required for data transmission; and performing data transmission with the device sending the FD trigger frame.

In one possible implementation, the processor 2710 controls the transceiver 2730 to perform: receiving first data sent by the equipment, wherein the first data is sent by the equipment at a preset time interval after the FD trigger frame is sent; an acknowledgement frame of the first data is sent to the device.

In one possible implementation, the processor 2710 controls the transceiver 2730 to perform: and sending an acknowledgement frame of the first data to the device at the preset time interval after receiving the first data.

In one possible implementation, the processor 2710 controls the transceiver 2730 to perform: and sending the acknowledgement frame of the first data to the equipment according to the preset acknowledgement frame sending sequence and sending time difference.

In one possible implementation, the processor 2710 controls the transceiver 2730 to perform: sending second data to the device at a preset time interval after receiving the FD trigger frame; and receiving an acknowledgement frame of the second data sent by the equipment.

In one possible implementation, the processor 2710 controls the transceiver 2730 to perform: transmitting the second data to the device at a preset time interval after receiving the FD trigger frame; receiving the first data sent by the equipment; transmitting an acknowledgement frame of the first data to the device; and receiving an acknowledgement frame of the second data sent by the equipment.

In one possible implementation, the processor 2710 performs: and when the time required by the data to be transmitted is less than the time corresponding to the length field, filling a default value or a random value into the data to be transmitted, so that the time required by the data to be transmitted is equal to the time corresponding to the length field.

Alternatively, when the electronic device 2700 is provided as an STA, the processor 2710 controls the transceiver 2730 to perform: receiving an FD RTS frame; sending a CTS frame to the device sending the FD RTS frame; and carrying out data transmission with the equipment.

Alternatively, when the electronic device 2700 is provided as an STA, the processor 2710 controls the transceiver 2730 to perform: after receiving the FD trigger frame, sending data to a device sending the FD trigger frame; receiving an acknowledgement frame of the data sent by the device; the processor 2710 performs: the FD EDCA parameter is used to update existing EDCA parameters, including Cwmin [ AC ], Cwmax [ AC ], AIFSN [ AC ], and FD EDCATIMETER [ AC ].

In one possible implementation, the processor 2710 further performs: determining the effective duration of the update according to the updated FD EDCATime [ AC ]; and when the updating time length reaches the effective time length, restoring the existing EDCA parameters to the state before the updating.

In one possible implementation, the processor 2710 also controls the transceiver 2730 to perform: receiving the management frame sent by the equipment; the processor 2710 also performs: the FD EDCA parameter is obtained from the management frame.

The specific structure and functions of the electronic device 2700 may be increased or decreased according to the technical development or the actual design requirement, which is not described in detail in the embodiments of the present disclosure.

In an exemplary embodiment, a data transmission system is further provided, which in one possible implementation includes:

the data transmission device in the embodiment corresponding to fig. 17 and the data transmission device in the embodiment corresponding to fig. 19, or the data transmission device in the embodiment corresponding to fig. 21 and the data transmission device in the embodiment corresponding to fig. 22, or the data transmission device in the embodiment corresponding to fig. 23 and the data transmission device in the embodiment corresponding to fig. 26.

In another possible implementation, the system includes: fig. 27 corresponds to the electronic device in the embodiment.

In an exemplary embodiment, a computer readable storage medium, such as a memory storing a computer program, which is loaded and executed by a processor to perform the data transmission method in the embodiments corresponding to fig. 5, 9, 12 and 15 is also provided. For example, the computer-readable storage medium may be a read-only memory (ROM), a random-access memory (RAM), a compact disc-read-only memory (CD-ROM), a magnetic tape, a floppy disk, an optical data storage device, and the like.

In an exemplary embodiment, a chip is also provided, which includes a processor and/or program instructions, and when the chip is operated, the data transmission method in the embodiments corresponding to fig. 5, 9, 12 and 15 is implemented.

It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.

The above description is intended to be exemplary only and not to limit the present disclosure, and any modification, equivalent replacement, or improvement made without departing from the spirit and scope of the present disclosure is to be considered as the same as the present disclosure.

Claims

1. A method of data transmission, the method comprising:

sending a full-duplex FD trigger frame, wherein the FD trigger frame comprises a length field, and the length field is used for indicating the time required by data transmission;

receiving data sent by a station sending data, wherein the data is sent by the station sending data at the preset time interval after the station sending data receives the FD trigger frame;

and sending the acknowledgement frame of the data to the station sending the data.

2. The method of claim 1, further comprising:

and sending a management frame to the station sending the data, wherein the management frame carries full-duplex enhanced distributed channel access (FD EDCA) parameters, and the FD EDCA parameters are used for updating the existing EDCA parameters of the station sending the data.

3. A method of data transmission, the method comprising:

sending data to a device sending the FD trigger frame after receiving the full-duplex FD trigger frame;

receiving an acknowledgement frame of the data sent by the device;

updating existing EDCA parameters including a contention window Cwmin [ access class AC ], Cwmax [ AC ], an arbitration inter-frame space number AIFSN [ AC ], and FD EDCaTimer [ AC ] using a full-duplex enhanced distributed channel access FD EDCA parameter.

4. The method of claim 3, wherein the FD EDCA parameter has a channel access priority less than the existing EDCA parameter.

5. The method according to claim 3 or 4, characterized in that the method further comprises:

6. The method according to any of claims 3 to 5, wherein the existing EDCA parameters are contained in an FD AC parameter record field in an existing EDCA parameter set element structure, the existing EDCA parameter set element structure being identical to the FD EDCA parameter set element structure.

7. The method of claim 6, wherein the FD AC parameter records comprise an FD best effort flow Access class AC BE parameter record, an FD background flow Access class AC BK parameter record, an FD video flow Access class AC VI parameter record, and an FD Voice flow Access class AC VO parameter record.

8. The method according to any one of claims 3 to 7,

the FD EDCA parameters are carried in a management frame sent by the equipment in an element form;

the method further comprises the following steps:

receiving the management frame sent by the equipment;

and acquiring the FD EDCA parameters from the management frame.

9. A data transmission device is characterized by comprising a sending module and a receiving module;

the sending module is configured to send a full-duplex FD trigger frame, where the FD trigger frame includes a length field, and the length field is used to indicate time required for data transmission;

the receiving module is configured to receive data sent by a station that sends data, where the data is sent by the station that sends data at an interval of the preset time interval after receiving the FD trigger frame;

the sending module is further configured to send an acknowledgement frame of the data to the station that sends the data.

10. The apparatus of claim 9, wherein the sending module is further configured to:

11. A data transmission device is characterized by comprising a sending module, a receiving module and an updating module;

the sending module is used for sending data to the equipment sending the FD trigger frame after receiving the full-duplex FD trigger frame;

the receiving module is configured to receive an acknowledgement frame of the data sent by the device;

the updating module is configured to update an existing EDCA parameter using a full duplex enhanced distributed channel access FD EDCA parameter, where the existing EDCA parameter includes a contention window CWmin [ access category AC ], CWmax [ AC ], an arbitration inter-frame space number AIFSN [ AC ], and an FD edcaitimeter [ AC ].

12. The apparatus of claim 11, wherein the FD EDCA parameter has a channel access priority less than the existing EDCA parameter.

13. The apparatus of claim 11 or 12, further comprising:

a determining module, configured to determine an effective duration of the current update according to the updated FD edcaitimer [ AC ];

and the recovery module is used for recovering the existing EDCA parameters to the state before the updating when the updating duration reaches the effective duration.

14. The apparatus of any of claims 11 to 13, wherein the existing EDCA parameters are contained in an FD AC parameter record field in an existing EDCA parameter set element structure, the existing EDCA parameter set element structure being the same as the FD EDCA parameter set element structure.

15. The apparatus of claim 14, wherein the FD AC parameter records comprise an FD best effort flow access category AC BE parameter record, an FD background flow access category AC BK parameter record, an FD video flow access category AC VI parameter record, and an FD voice flow access category AC VO parameter record.

16. The apparatus of any one of claims 11 to 15,

the device also comprises an acquisition module;

the receiving module is further configured to receive the management frame sent by the device;

the obtaining module is configured to obtain the FD EDCA parameter from the management frame.

17. An electronic device, comprising a transceiver, a memory, and a processor, wherein the transceiver, the memory, and the processor communicate with each other through an internal connection path, wherein the memory is configured to store instructions, wherein the processor is configured to execute the instructions stored by the memory to control the transceiver to receive signals and to control the transceiver to transmit signals, and wherein the electronic device causes the processor to perform the data transmission method of claim 1 or 2 when the processor executes the instructions stored by the memory.

18. An electronic device, comprising a transceiver, a memory, and a processor, wherein the transceiver, the memory, and the processor communicate with each other through an internal connection path, wherein the memory is configured to store instructions, wherein the processor is configured to execute the instructions stored by the memory to control the transceiver to receive signals and to control the transceiver to transmit signals, and wherein the electronic device causes the processor to perform the data transmission method of any one of claims 3 to 8 when the instructions stored by the memory are executed by the processor.

19. A computer-readable storage medium, in which a computer program is stored which is loaded by a processor and which executes a data transmission method according to any one of claims 1 to 8.

20. A chip comprising a processor and/or program instructions which, when run, perform a data transmission method as claimed in any one of claims 1 to 8.