WO2018072210A1 - Beam training method, apparatus and wireless device - Google Patents

Abstract

The present invention relates to the field of wireless communications, and provided by the embodiments thereof are a beam training method, an apparatus and a wireless device, the method comprising: a first wireless device sending beam training information, the beam training information comprising at least one of sector level sweep (SLS) parameters and beam refinement protocol (BRP) parameters, wherein the first wireless device may indicate whether an SLS parameter is an invalid parameter by means of a first reserved bit of a beamforming (BF) control field. A second wireless device may receive the beam training information sent by the first wireless device and determine whether the SLS parameter comprised in the beam training information is invalid, and performs beam training according to any one of the SLS parameters or the BRP parameters when the SLS parameter is invalid. The present invention clarifies the unclear places in a protocol when an SLS is invalid, and eliminates a logic error in the protocol, thereby making the protocol clearer and more standardized. In addition, a BRP package may also comprise multiple sector ID detection (MID) parameters, channel parameters and antenna transmission parameters, thereby extending the role of BRP parameters in resource scheduling.

Description

Beam training method, device and wireless device Technical field

The present invention relates to the field of wireless communications, and in particular, to a beam training method, apparatus, and wireless device.

Background technique

In the field of wireless communication, as the frequency band below 6 GHz is becoming more and more crowded, high frequency is getting more and more attention with its bandwidth advantage. Among them, in order to realize high-frequency communication, the 60 GHz band communication protocol is defined in the standard of 802.11ad of the Institute of Electrical and Electronics Engineers (IEEE). However, the loss in data transmission in high frequency communication is very large. In order to compensate for the loss of data transmission in high frequency communication, the receiving antenna gain and the transmitting antenna gain can be increased by beamforming techniques. However, since the beam directivity is strong, beam training is needed to obtain a suitable beam direction between the transmitting device and the receiving device. Therefore, the beam training process is designed in the IEEE802.11ad protocol.

Unlike other systems, IEEE 802.11ad's scheduling resources, in addition to being used to transmit data, may also be used for beam training. In order to indicate whether the resource is used for beam training, when the beam training Beamforming Training field in the Beamforming Control (BF Control) field is 1 in the scheduling information, the resource is used for beam training, and the BF Control field is used. The other fields in the field indicate the specific parameters in the Sector Level Sweep (SLS) phase. The BF Control field may be carried in a Grant frame, a Grant Acknowledgement (Grant Ack) frame, a Service Request Request (SPR) frame, or an Extended Schedule element, for indicating beam training. Related scheduling information.

It can be seen from the above description that the SLS parameter carries only the relevant parameters of the SLS phase, that is, the SLS parameter. When the Beamforming Training field is 1, the SLS parameter carried in the default BF Control field is a valid parameter. In fact, the beam training is divided into the SLS phase and the Beam Refinement Protocol (BRP) phase. When the resource is only used in the BRP phase, the SLS parameters carried in the BF Control are invalid. When the SLS parameter is invalid, because the protocol does not describe the information when the SLS parameter is invalid, the responding device cannot judge the SLS parameter as an invalid parameter, and still uses the SLS parameter for beam training. However, the initiating device does not perform beam training in the SLS phase. At this time A logic error occurred, which caused the content of the agreement to be unclear.

Summary of the invention

In order to clarify the beam training when the SLS parameter is invalid, the embodiment of the present invention provides a beam training method, device, and wireless device.

In a first aspect, a beam training method is provided, which is applied to a first wireless device, and the technical solution is as follows:

Transmitting beam training information, the beam training information including at least one of a sector level scan SLS parameter or a BRP parameter;

The first reserved bit of the BF Control field indicates whether the SLS parameter is an invalid parameter.

It should be noted that the first wireless device device may be an AP/PCP, or may be a common site, such as a mobile terminal, a computer, or the like, which is not specifically limited in this embodiment of the present invention.

In a possible implementation manner, when the first wireless device is an STA, that is, when the first wireless device is not an AP/PCP, the STA may send beam training information to the AP/PCP, where the beam training is performed. Information can be carried in a Grant Ack frame or an SPR frame.

In another possible implementation manner, when the wireless device is an AP/PCP, the beam training information may be carried in a Grant frame or an Extended Schedule element.

With reference to the first aspect, in the first possible implementation manner of the foregoing first aspect, before the sending the beam training information, the method further includes:

When the SLS parameter is invalid, setting a value of the first reserved bit of the BF Control field to a first value;

When the SLS parameter is valid, the value of the first reserved bit of the BF Control field is set to a second value.

With reference to the first aspect, in a second possible implementation manner of the foregoing first aspect, the BRP parameter includes a multiple sector ID detection (MID) parameter, where the MID parameter includes an initiating device indication information and Responding to device indication information;

The initiating device indication information is used to indicate whether there is beam training performed by the initiating device based on the MID parameter, where the response device indication information is used to indicate whether there is beam training performed by the responding device based on the MID parameter, and BRP The beam in the packet trains the length information of the TRN (Training, TRN) subfield.

It should be noted that the initiating device indication information may be an IInInitiator MID field occupying 1 bit, and the response device indication information may be an IResponderMID field occupying 1 bit.

In conjunction with the first aspect, in another possible implementation manner of the foregoing first aspect, the MID parameter may further include quantity indication information, where the quantity indication information is used to indicate the number of TRN subfields included in the training field.

With reference to the first aspect, in a third possible implementation manner of the foregoing first aspect, the BRP parameter includes a channel parameter, where the channel parameter is located in the BF Control field or a non-BF Control field, the BF Control field And the non-BF Control field is located in the extended scheduling information, the authorization frame, the authorization confirmation frame, the measurement request, or the directional channel quality request, where the channel parameter is used to indicate the bandwidth information occupied by the training field of the BRP packet during the transmission process. .

It should be noted that the non-BF Control field may be a reserved bit in the BRP packet, or may be other fields.

The BRP packet may include a data part and a training field, where the training field may be a training field for indicating single channel transmission, or may be a training field for indicating broadband transmission. And the data portion can be transmitted over the wideband, and the training field can be sent on a single channel.

In conjunction with the fourth possible implementation of the first aspect, in a fourth possible implementation of the foregoing first aspect, the BRP packet includes a data portion and a training field;

The bandwidth of the training field is less than or equal to the bandwidth of the data portion.

Wherein, when the bandwidth of the training field is smaller than the bandwidth of the data part, since the information for performing beam training is carried in different TRN (Training, TRN) subfields, when the BRP parameter is transmitted by using a single channel, the saving can be saved. Resources for beam training.

In addition, when the bandwidth of the training field is equal to the bandwidth of the data part, the BRP parameter may be transmitted by using a broadband, and when the broadband is used for the transmission of the BRP parameter, the initiating device or the responding device may obtain the channel measurement result on the entire channel. To facilitate subsequent operations.

With reference to the first aspect, in a fifth possible implementation manner of the foregoing first aspect, the BRP parameter includes an antenna transmission parameter, where the antenna parameter is used to indicate Single Input and Single Output (SISO) or more Multiple-Input Multiple-Output (MIMO);

And performing beam training for multi-user MIMO when the type information included in the antenna transmission parameter is the first value;

And performing beam training of the SISO when the type information included in the antenna transmission parameter is a second value.

In addition, when the type information included in the antenna transmission parameter indicates that the multi-user MIMO beam training is performed, not only the group user may indicate the beam-trained multi-user MIMO packet user, but also the extended information and the target in the authorization frame. An application identifier (AID) field to collectively indicate a group user, so that more group users can be indicated, so that there are more group users in the multi-user MIMO.

In conjunction with the fifth possible implementation of the first aspect, in the six possible implementation manners of the foregoing first aspect, when the type information included in the antenna transmission parameter indicates that the multi-user MIMO beam training is performed, The antenna transmission parameter further includes Group ID information and measurement feedback information;

The Group ID information is used to indicate a packet user of multi-user MIMO of beam training;

The measurement feedback information is used to indicate a precoding feedback parameter that each of the group users needs to feed back and channel information for indicating a channel state information (CSI).

In a second aspect, a beam training method is provided for use in a second wireless device, the method comprising:

Obtaining beam training information, where the beam training information includes at least one of an SLS parameter or a BRP parameter;

Determining whether the SLS parameter included in the beam training information is invalid;

When the SLS parameter is invalid, and the BRP parameter is included in the beam training information, performing beam training according to the BRP parameter;

When the SLS parameter is valid, and the BRP parameter is included in the beam training information, beam training is performed according to at least one of the SLS parameter or the BRP parameter.

It should be noted that the second wireless device may be an AP/PCP, or may be an STA, such as a mobile terminal, a computer, or the like, which is not specifically limited in this embodiment of the present invention.

Wherein, when the second wireless device is an STA, that is, when the second wireless device is not an AP/PCP, the second wireless device may obtain beam training information by receiving information broadcast by the AP/PCP.

With reference to the second aspect, in another possible implementation manner of the foregoing second aspect, when the SLS parameter is invalid, and the BRP parameter is not included in the beam training information, the SLS parameter is not determined according to the SLS parameter. Perform beam training.

When the beam training information includes only the SLS parameter, and the SLS parameter is invalid, the remaining bits in the BF Control field indicate that the SLS parameter is invalid, and the rest are used to transmit the SLS. The bits of the parameter are also not used to transfer other information. Therefore, after receiving the training information, the second wireless device that is not the AP/PCP only obtains that the resource is used for beam training, but has no specific beam training parameter, therefore, the second wireless device will not do any operating. That is, the second wireless device sees that beam training is not performed according to the SLS parameters.

With reference to the second aspect, in another possible implementation manner of the foregoing second aspect, when the SLS parameter is valid, and the BRP parameter is not included in the beam training information, based on the SLS parameter Beam training.

With reference to the second aspect, in another possible implementation manner of the foregoing second aspect, when the SLS parameter is valid, and the BRP parameter is included in the beam training information, based on the SLS parameter or BRP The parameters are beam trained.

With reference to the second aspect, in the first possible implementation manner of the foregoing second aspect, the determining whether the SLS parameter included in the beam training information is invalid includes:

Obtaining a first reserved bit from the beam training information;

Determining whether the value of the first reserved bit is a first value;

When the value of the first reserved bit is the first value, it is determined that the SLS parameter is invalid.

It should be noted that, according to the foregoing first aspect, the first wireless device indicates whether the SLS parameter is invalid in the first reserved bit in the beam training information, and therefore, the second wireless device can train according to the beam. The first reserved bit in the message determines whether the SLS parameter is invalid.

With reference to the second aspect, in the second possible implementation manner of the foregoing second aspect, the performing beam training according to the BRP parameter includes:

Obtaining length information of the training field beam training TRN subfield in the BRP packet included in the BRP parameter according to the BRP parameter.

Specifically, the second wireless device performs the beam training based on the BRP parameters, and the BPR parameters are used for the auxiliary beam training and the auxiliary interference measurement, which are not specifically limited in this embodiment of the present invention.

In a third aspect, a beam training apparatus is provided, the beam training apparatus having a function of implementing the behavior of the beam training method in the first aspect described above. The beam training device includes at least one module for implementing the beam training method provided by the first aspect above.

In a fourth aspect, a beam training device is provided, the beam training device having the second The function of the beam training method behavior in the aspect. The beam training device includes at least one module for implementing the beam training method provided by the second aspect above.

In a fifth aspect, a wireless device is provided, the wireless device comprising the wireless device comprising a transmitter, a receiver, a processor, a memory, and a communication bus; the memory, the transmitter, and the receiver Connected to the processor via a communication bus, the memory storing program code, the processor is used to call program code;

The processor is specifically configured to:

Determining beam training information, the beam training information including at least one of an SLS parameter or a BRP parameter;

The transmitter is used to:

Transmitting the beam training information;

The first reserved bit of the BF Control field indicates whether the SLS parameter is an invalid parameter.

The memory is configured to store a program supporting the beam training device to perform the beam training method, and store data related to implementing the beam training method, where the data includes beam training information and the like. The processor is configured to execute a program stored in the memory. The communication bus is used to establish a connection between the processor and the memory.

In a sixth aspect, a wireless device is provided, the wireless device comprising the wireless device comprising a transmitter, a receiver, a processor, a memory, and a communication bus; the memory, the transmitter, and the receiver Connected to the processor via a communication bus, the memory storing program code, the processor is used to call program code;

Wherein the receiver is used to:

Obtaining beam training information, where the beam training information includes at least one of an SLS parameter or a BRP parameter;

The processor is specifically configured to:

Determining whether the SLS parameter included in the beam training information is invalid;

When the SLS parameter is invalid, and the BRP parameter is included in the beam training information, performing beam training according to the BRP parameter;

When the SLS parameter is valid, and the BRP parameter is included in the beam training information, the root Beam training is performed according to at least one of the SLS parameter or the BRP parameter.

The memory is configured to store a program supporting the beam training device to perform the beam training method, and store data related to implementing the beam training method, where the data includes beam training information and the like. The processor is configured to execute a program stored in the memory. The communication bus is used to establish a connection between the processor and the memory.

In a seventh aspect, the embodiment of the present application provides a wireless device, which has the function of implementing the behavior of the wireless device in the beam training method provided by the foregoing first aspect. The functions may be implemented by hardware or by corresponding software implemented by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In an eighth aspect, an embodiment of the present application provides a wireless device, where the wireless device has a function of implementing a wireless device behavior in a beam training method provided by the foregoing second aspect. The functions may be implemented by hardware or by corresponding software implemented by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a ninth aspect, the embodiment of the present application provides a computer storage medium for storing computer software instructions for the wireless device provided in the seventh aspect, which includes a program designed to execute the first aspect.

In a tenth aspect, the embodiment of the present application provides a computer storage medium for storing computer software instructions for the wireless device provided by the foregoing eighth aspect, which comprises a program designed to execute the foregoing second aspect.

The technical solution provided by the embodiment of the present invention has the beneficial effects that: in the embodiment of the present invention, the beam training information for performing beam training includes a BRP parameter in addition to the SLS parameter, so that even if the SLS parameter is invalid, The wireless device that obtains the beam training can also use the BRP parameters for beam training, thereby clarifying the unclearness of the protocol when the SLS parameter is invalid, and eliminating the logic errors in the protocol, thereby making the protocol clearer and more standardized.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in light of the inventive work.

FIG. 1A is a schematic structural diagram of a beam training system architecture according to an embodiment of the present invention.

FIG. 1B is a schematic structural diagram of a first type of wireless device according to an embodiment of the present invention.

FIG. 2A is a flowchart of a beam training method according to an embodiment of the present invention.

FIG. 2B is a schematic structural diagram of a BRP packet according to an embodiment of the present invention.

FIG. 2C is a schematic structural diagram of another BRP packet according to an embodiment of the present invention.

FIG. 2D is a schematic diagram of beam training for BRP parameters according to an embodiment of the present invention.

FIG. 2E is a schematic diagram of beam training for SLS parameters according to an embodiment of the present invention.

FIG. 3 is a schematic structural diagram of a first beam training apparatus according to an embodiment of the present invention.

FIG. 4 is a schematic structural diagram of a second beam training apparatus according to an embodiment of the present invention.

FIG. 5 is a schematic structural diagram of a second wireless device according to an embodiment of the present invention.

FIG. 6 is a schematic structural diagram of a third wireless device according to an embodiment of the present invention.

detailed description

The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

Before explaining the embodiments of the present invention in detail, the system architecture of the embodiments of the present invention will be introduced. FIG. 1A is a schematic structural diagram of a beam training system according to an embodiment of the present invention. The system architecture can be applied to a wireless local area network and is applicable to any one of the IEEE 802.11 series protocols currently adopted by the wireless local area network. The system architecture may include a wireless device as an AP/PCP and at least one wireless device as a normal station (Station, STA), and the AP/PCP may serve as an initiator device or a response device for beam training, and the common site may also serve as a The initiating device or the responding device of the beam training, and the at least one ordinary station can directly communicate with each other. In addition, in the beam training process, when the normal station is used as the initiating device or the responding device, after the beam training ends, any one of the initiating device or the responding device may send the beam training result to the AP/PCP. .

1B is a schematic structural diagram of a wireless device, which mainly includes a processor 110 having one or more processing cores, including one, according to an exemplary embodiment. Or a memory 120 of one or more computer readable storage media, a communication bus 130, a transmitter 140, a receiver 150, and the like, and the memory 120, the transmitter 140, and the receiver 150 are coupled to the processor 110 via a communication bus 130, respectively. It will be understood by those skilled in the art that the wireless device structure illustrated in FIG. 2B does not constitute a limitation to the wireless device, and may include more or less components than those illustrated, or a combination of certain components, or different component arrangements, This embodiment of the present invention does not limit this.

The processor 110 is a control center of the wireless device, and the processor 110 can be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more An integrated circuit for controlling the execution of the program of the present invention. The processor 110 can implement the beam training method provided by the embodiment of FIG. 3A below by running or executing a software program and/or module stored in the memory 120 and calling data stored in the memory 120.

The memory 120 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM), or may store information and Other types of dynamic storage devices of instructions may also be Electrically Erasable Programmable Read-Only Memory (EEPROM), Compact Disc Read-Only Memory (CD-ROM) or other optical discs. Storage, optical storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or capable of carrying or storing desired program code in the form of instructions or data structures And any other medium that can be accessed by the integrated circuit, but is not limited thereto. The memory 120 can exist independently and be coupled to the processor 110 via a communication bus 130. The memory 120 can also be integrated with the processor 110.

Transmitter 140 and receiver 150 use devices such as any transceiver for communicating with other devices or communication networks, such as Wireless Local Area Networks (WLANs) and the like.

Additionally, the communication bus 130 described above can include a path for communicating information between the processor 110, the memory 120 transmitter 140, and the receiver 150.

FIG. 2A is a flowchart of a beam training method according to an embodiment of the present invention. Referring to FIG. 2A, the method is applied to a wireless device, and the method includes the following steps.

Step 201: The first wireless device sends beam training information, where the beam training information includes at least one of an SLS parameter or a BRP parameter.

It should be noted that the first wireless device may be an AP/PCP, or may be an STA, such as a mobile terminal, a computer, or the like, which is not specifically limited in this embodiment of the present invention.

In a possible implementation manner, when the first wireless device is an STA, that is, when the first wireless device is not an AP/PCP, the STA may send beam training information to the AP/PCP, where the beam training is performed. The information may be carried in an Authorization Acknowledgement Frame Grant Ack frame or a Service Request Frame SPR frame.

It should be noted that the Grant Ack frame may be used to confirm the AP/PCP allocated Service Period (SP), and the SPR frame may be used to request the AP/PCP to give an allocation SP.

In another possible implementation manner, when the wireless device is an AP/PCP, the beam training information may be carried in a Grant frame or an Extended Schedule element.

The wireless device as the AP/PCP can broadcast the beam training information through the extended scheduling information in the beacon frame or the extended scheduling information in the Announce frame. The extended scheduling information in the beacon frame or the extended scheduling information in the announcement frame carries resource and beam training parameters allocated for performing beam training.

It should be noted that the beacon frame may indicate multiple resource allocations (Allocation), and the announcement frame may indicate a resource allocation.

In addition, the Grant frame can be used to allocate a service time in a Transmit Opportunity (TXOP).

It should be noted that when the wireless device is an AP/PCP, the beam training information may be carried not only in the Grant frame or the extended scheduling information, but also in the measurement request or the directional channel quality request.

After the AP/PCP wireless device allocates resources for beam training and parameters for beam training, the resources and beam training parameters allocated to the wireless devices in the first link for beam training can be added to The measurement request or the directional channel quality request is used to notify the wireless device in the second link to perform measurement by the measurement request or the directional channel quality request.

It should be noted that the resources for performing beam training by the wireless device in the first link may include a time period in which the wireless device in the first link performs beam training, a wireless device that performs beam training, a packet length parameter in beam training, and The number of the training fields included in the embodiment of the present invention is not specifically limited.

Further, before transmitting the beam training information by broadcasting, the wireless device may further indicate whether the SLS parameter included in the beam training information is invalid.

It should be noted that when the beam training information is carried through the BF Control field, and the BF Control When the Beamforming Training field in the field is 1, according to the current IEEE 802.11ad protocol, other fields in the BF Control are used for the SLS parameter, but when the Beamforming Training field is 1, the resource can also be used and used only. Beam training in the BRP phase, the above case is the case where the SLS parameter is invalid.

The wireless device may indicate, by using a first reserved bit of the BF Control field, whether the SLS parameter is invalid; and when the SLS parameter is invalid, setting a value of the first reserved bit of the BF Control field to a first value. When the SLS parameter is valid, the value of the first reserved bit of the BF Control field is set to a second value.

It should be noted that the first value is a value that is set in advance. For example, the first value may be 1 or 0, which is not specifically limited in the embodiment of the present invention. The second value is also a value set in advance, and the second value may be 1 or 0. The embodiment of the present invention also does not specifically limit the same.

It should be noted that the first value and the second value are mutually different values. For example, when the first value is 1, the second value is 0, and when the first value is 0, the second value is The value is 1.

For example, the 12th to 15th bits in the BF Control are reserved bits, and the 15th bit is used as an indication. When the SLS parameter is invalid, the 15th bit is set to 1. When the SLS parameter is valid, the 15th bit is set. Bit is 0.

When the following SLS parameters are valid, the fields included in the SLS parameters and the parameters included in the BRP parameters are described.

SLS parameters

The SLS parameter may include the following fields when the SLS parameter is valid:

IsInitiatorTXSS is used to indicate whether the initiating device performs transmission training or receiving training in the Initiator Sector Sweep (ISS) training sub-phase during the SLS phase.

IsResponderTXSS is used to indicate whether the responding device performs transmission training or receiving training in the Responder Sector Sweep (RSS) training sub-phase during the SLS phase.

RXSS Length, used to indicate the length of the received training when IsInitiatorTXSS or IsResponderTXSS is 0. The specific length is (RXSS Length+1)×2.

RXSSTxRate is used to indicate whether the transmission format of the transmitted frame allows transmission formats other than MCS0 when receiving beam training.

Total Number of Sectors, if the field is carried in the authorization frame, indicates the total number of sectors used by the initiating device trained in the ISS. If the field is carried in the authorization confirmation frame, it indicates the total number of sectors used by the responding device trained in the RSS. Where the total number of sectors is Total Number of Sectors+1.

Number of RX DMG Antennas, if the field is carried in the grant frame, indicates the number of receive antennas used by the initiating device trained in the RSS. If the field is carried in the authorization confirmation frame, it indicates the number of receiving antennas used by the responding device trained in the ISS. The number of receiving antennas is Number of RX DMG Antennas+1.

The initiating device refers to a wireless device in which the device address is in the allocated source address in the resource allocation, and the responding device refers to the wireless device in which the device address is in the assigned destination address.

BRP parameters

It should be noted that the BRP parameter may include an MID parameter, a channel parameter of the training field, and an antenna transmission parameter.

(1) MID parameters:

It should be noted that the MID parameter may include the initiating device indication information and the response device indication information.

The initiating device indication information is used to indicate whether there is beam training performed by the wireless device as the initiating device based on the MID parameter, where the responding device indication information is used to indicate whether there is a beam that is performed by the wireless device as the responding device based on the MID parameter. training.

It should be noted that the initiating device indication information may be an IInInitiator MID field occupying 1 bit, and the response device indication information may be an IResponderMID field occupying 1 bit.

Further, the MID parameter may include not only the initiating device indication information and the response device indication information, but also the quantity indication information, where the quantity indication information is used to indicate the number of TRN subfields included in the training field.

(2) Channel parameters of the training field

Since the resources allocated by the AP/PCP may be transmitted in multiple channels, the BRP parameter may include a channel parameter of the training field, and the channel parameter may be located in a beam control BF Control field or a non-BF Control field, and the BF Control field And the non-BF Control field is located in the extended scheduling information, the authorization frame, the authorization confirmation frame, the measurement request, or the directional channel quality request, and the channel parameter is used to indicate the bandwidth information occupied by the training field of the BRP packet during the transmission process.

It should be noted that the non-BF Control field may be a reserved field in the BRP packet, or The other fields are not specifically limited in this embodiment of the present invention.

The BRP packet may include a data part and a training field, where the training field may be a single channel SC training field for indicating single channel transmission, or may be a WB training field for indicating broadband transmission. And the data portion can be transmitted over the wideband, and the training field can be sent on a single channel.

In a possible case, the bandwidth occupied by the data part may be different from the bandwidth occupied by the training field, and the training is performed when the bandwidth occupied by the data part is different from the bandwidth of the training field. The bandwidth of the field is less than the bandwidth of the data portion.

Wherein, when the bandwidth of the training field is smaller than the bandwidth of the data part, since the information for performing beam training is carried in different TRN subfields, a single channel may be used for transmission, and when the BRP parameter is transmitted by using a single channel. It can save resources for beam training.

It should be noted that the single channel may be a predetermined channel or may be an offset from the primary channel indicated by the channel indication information.

In another possible case, the bandwidth of the training field is equal to the bandwidth of the data portion. When the bandwidth of the training field is equal to the bandwidth of the data part, the BRP parameter may be transmitted by using a broadband, and when the broadband is used for the transmission of the BRP parameter, the initiating device or the responding device may obtain the channel measurement result on the entire channel. To facilitate subsequent operations.

It should be noted that the BRP packet may include not only a data part and a training field, but also other fields. For example, referring to FIG. 2B, the BRP packet further includes a legacy (Legacy)-short training field L-STF, a legacy channel. Estimation field L-CE, protocol header, enhanced direction multi-gigabit training field EDMG STF and enhanced directional multi-gigabit channel estimation field EDMG CE, etc., wherein the protocol header may include a conventional header and an enhanced direction Dogeby header, the implementation of the present invention This example does not limit this.

The L-STF is used to obtain a packet synchronization and automatic gain control AGC, the L-CE is used to estimate a channel, and the protocol header portion can describe a transmission mode of a data part, and the data part is used to carry a parameter or beam for performing beam training. Training feedback results.

Antenna transmission parameter

Due to beam training of BRP parameters, it may be used for SISO, and may also be used for MIMO, and MIMO can be classified into two types: single-user MIMO and multi-user MIMO. Therefore, when the BRP parameter includes an antenna transmission parameter, the antenna parameter may be used to indicate SISO or MIMO; when the type information included in the antenna transmission parameter is the first value, indicating a beam for performing multi-user MIMO Training; when the type information included in the antenna transmission parameter is the second value, indicating beam training for SISO.

Wherein, when the type information included in the antenna transmission parameter indicates that the multi-user MIMO beam training is performed, the antenna transmission parameter further includes Group ID information and measurement feedback information; the Group ID information is used to indicate beam training for multi-user MIMO. a packet user; the measurement feedback information is used to indicate a precoding feedback parameter that each packet user needs to feed back and channel information indicating that the feedback channel state information CSI is located.

In addition, when the type information included in the antenna transmission parameter indicates that the multi-user MIMO beam training is performed, not only the group user may indicate the beam-trained multi-user MIMO packet user, but also the extended information and the target in the authorization frame. The AID field is used to collectively indicate the group user, so that more group users can be indicated, so that there are more group users in the multi-user MIMO.

Furthermore, since multiple transmit antennas are supported in the IEEE 802.11ay protocol, the training phase of the first wireless device may include transmission of multiple BRP packets, and the number of BRP packets is determined by the number of multi-gigabit antennas in the transmit direction.

When the beam training information sent by the first wireless device includes at least one of the SLS parameters and the BRP parameters, the following situations may be included:

1. The beam training information includes only the SLS parameters.

When the SLS parameter is valid, the bit used to transmit the SLS parameter may also transmit other; when the SLS parameter is invalid, since the reserved bit has indicated that the SLS parameter is invalid, the bits for transmitting the SLS parameter are not used for transmission. other information.

2. The SLS parameters are not included in the beam training information, but include BRP parameters.

It should be noted that only when the SLS parameter is invalid, the SLS parameter is not included in the beam training information, but the BRP parameter is included.

When the SLS parameter is invalid, the first wireless device may multiplex the bits in the BF Control field except the Beamforming Training and the bit used to indicate whether the SLS parameter is valid, and the remaining bits may be used for multiplexing. To indicate BRP parameters.

In addition, when the SLS parameter is not included in the beam training information, but the BRP parameter is included, the BRP parameter can be indicated not only by multiplexing the bit indicating the SLS parameter, but also when the bit of the multiplexed SLS parameter is insufficient. The second reserved bit in the BF Control field indicates the extension of the BRP parameter. In the embodiment of the present invention, the bit of the BF Control field may be increased by adding an Extended BF Control field.

3. The beam training information includes both SLS parameters and BRP parameters.

When the beam training information includes both the SLS parameter and the BRP parameter, the bit indicating the SLS parameter needs to be reserved in the BF Control field, that is, the BF Control field retains the bit indicating the SLS parameter. It is also necessary to extend the bits of the BF Control field. And the reserved bits indicating the SLS parameter may transmit information related to the SLS parameter, and the added bit indicates the BRP parameter.

That is, when the SLS parameter is invalid, a bit indicating the SLS parameter is reserved in the BF Control field, but the bit indicating the SLS parameter is not used for transmitting information, and the second reserved bit in the BF Control field is used. Indicates the extension of the BRP parameter. The bit of the BF Control field is added by adding the Extended BF Control field, and the extended Extended BF Control field is used to indicate the BRP parameter.

Step 202: The second wireless device acquires beam training information.

It should be noted that the second wireless device may be an AP/PCP, or may be an STA, such as a mobile terminal, a computer, or the like, which is not specifically limited in this embodiment of the present invention.

Wherein, when the second wireless device is an STA, that is, when the second wireless device is not an AP/PCP, the second wireless device may obtain beam training information by receiving information broadcast by the AP/PCP.

In addition, since the beam training information sent by the first wireless device includes at least one of an SLS parameter or a BRP parameter, the beam training information acquired by the second wireless device also includes at least one of an SLS parameter or a BRP parameter.

Step 203: The second wireless device determines whether the SLS parameter included in the beam training information is invalid.

In the foregoing step 201, the first wireless device indicates, in the first reserved bit in the beam training information, whether the SLS parameter is invalid. Therefore, the second wireless device may obtain the first information from the beam training information. And retaining the bit; and determining whether the value of the first reserved bit is the first value; when the value of the first reserved bit is the first value, determining that the SLS parameter is invalid.

Step 204: When the SLS parameter is invalid, and the BRP parameter is included in the beam training information, the second wireless device performs beam training according to the BRP parameter.

It can be seen from the above step 201 that when the SLS parameter is invalid, the case where the SLS parameter is not included in the beam training information but includes the BRP parameter occurs. And when the SLS parameter is invalid, in addition to Beamforming Training and the first reserved bit indicating whether the SLS parameter is invalid, the remaining bits in the BF Control field can be used for multiplexing to indicate the BRP parameter. Moreover, when the bit of the multiplexed SLS parameter is insufficient, the extended BF Control field may be added to carry the extension. BRP information for the show.

In addition, when the SLS parameter is invalid, a bit for indicating the SLS parameter is reserved in the BF Control field, but the bit indicating the SLS parameter is not used for transmitting information, and the bit of the BF Control field is added by adding the Extended BF Control field. Bit, the extended Extended BF Control field is used to indicate the BRP parameters. Therefore, when the second wireless device that is not the AP/PCP receives the beam training information, the second beam training information may perform beam training based on the BRP parameter. The second wireless device performing beam training based on the BRP parameter may include the following situations:

BRP parameters are used to assist beam training for single antennas

The second wireless device may obtain, according to the BRP parameter, length information of the training field multi-beam training TRN subfield in the BRP packet included in the BRP parameter.

Since the first wireless device can transmit multiple TRN subfields in different directions, the second wireless device can receive the multiple TRN subfields in different directions.

It should be noted that, referring to FIG. 2C, the BRP packet may include not only a training field but also a preamble field, a header field, and a data field.

The training field may include an AGC field and a TRN field, where the TRN field may include multiple TRN units, and each of the TRN units may include one CE subfield and multiple TRN subfields. The AGC field can always be at the top of the training field, or multiple AGC fields, distributed in the middle of the training field. Of course, in the actual application, the BRP package may also include other fields, which are not specifically limited in this embodiment of the present invention.

In another possible implementation, in the BRP phase, the first wireless device may employ quasi-omnidirectional transmission in the MID sub-phase. By extending the beam training information in the scheduling information of the AP/PCP broadcast, it is possible to make the receiving beam training using the BRP parameter even if it is not the third wireless device in the currently assigned destination address or the third wireless device in the source address. .

For example, as shown in FIG. 2D, the BRP packet may be subjected to beam transmission training by the BRP packet between the first wireless device as the initiating device and the second wireless device as the responding device 1, although the third wireless device as the response device 2 The device address is not in the assigned destination address and source address, but the responding device 2 can also obtain training between the first wireless device as the initiating device and the second wireless device as the responding device 1 through the AP/PCP. The parameter, therefore, the response device 2 can perform beam reception training through the BRP packet, thereby improving beam training efficiency.

It should be noted that, in the above description, the embodiment of the present invention is described by taking four TRN subfields as an example, and does not limit the embodiment of the present invention.

It should be noted that, since the MID parameter includes the initiating device indication information and the response device indication information, when the initiating device indication information indicates that the first wireless device that is the initiating device exists to perform beam training based on the MID parameter, or the response device indicates The information indicates that there is beam training based on the MID parameter by the second wireless device as the responding device, and the third wireless device may perform beaming based on the MID parameter and the first wireless device as the initiating device or the second wireless device as the responding device training. The first wireless device shall transmit multiple TRN subfields included in the BRP packet, so that the second wireless device or the third wireless device receives the multiple TRN subfields in different directions, and beams the multiple TRN subfields. training.

BRP parameters for multi-antenna beam training

If the BRP parameter is indicated for MU-MIMO training, the STA with only one receiving antenna can also be trained according to the beam training parameters, and further, feedback can be performed according to the feedback parameters in the beam training parameters. Conversely, a STA with only one receive antenna may be detrimental to the resource for beam training.

In another possible implementation manner, when the beam training information includes only the SLS parameter, and the SLS parameter is invalid, since the reserved bit in the BF Control field has indicated that the SLS parameter is invalid, the remaining bits for transmitting the SLS parameter Bits are also not used to transfer other information. Therefore, after receiving the training information, the second wireless device that is not the AP/PCP only obtains that the resource is used for beam training, but has no specific beam training parameter, therefore, the second wireless device will not do any operating. That is, the second wireless device sees that beam training is not performed according to the SLS parameters.

It should be noted that the BRP parameter can be used not only for beam training but also for assisting interference measurement, and the BRP parameter is used to assist in performing interference measurement as follows.

BRP parameters are used to aid interference measurement

The directional beam transmission used between the links can improve the spatial multiplexing rate to improve the throughput of the system. Therefore, in order to support spatial multiplexing, it can be seen from the foregoing step 201 that when the first wireless device is an AP/PCP, the first wireless device schedules a link that needs to be multiplexed and listens for a link that may be multiplexed, and then feeds back the direction. Sexual report. However, since the current AP/PCP does not necessarily obtain the direction between the links, and the wireless device that already has the link does not transmit in multiple transmission directions, it is difficult to obtain a more accurate interference situation in the multiplexed link. Therefore, interference measurement is required.

Wherein, when the first wireless device is an AP/PCP, the first wireless device carries the resource and beam training parameters allocated to the first link to the measurement request or the directional channel quality request, and to the second link The wireless device in the middle sends the measurement request to obtain a directional channel quality request. None in the second link After receiving the measurement request or the directional channel quality request, the line device measures the TRN subfield of the wireless device in the first link according to the BRP parameter, and obtains an interference situation.

Specifically, the wireless device in the second link obtains an interference situation in different directions by receiving a TRN subfield sent by the wireless device in the first link. When the BRP parameter is the MID parameter, the wireless device in the second link may receive the multiple TRN subfields in different directions, thereby obtaining measured values in different directions. In addition, since the BRP parameter may further include a channel parameter of the training field, the wireless device in the second link may receive the multiple TRN subfields in different directions on the channel indicated by the channel parameter, thereby obtaining Measurements in different directions.

It should be noted that the BRP parameter for performing beam training may be sent to the AP/PCP, and the AP/PCP receives the BRP parameter, whether it is the second wireless device that is the initiating device or the second wireless device that is the responding device. Thereafter, the multiplexed link can be determined according to the BRP parameter, and the link parameters are sent to the wireless device in the multiplexed link.

Step 205: When the SLS parameter is valid, and the BRP parameter is included in the beam training information, the second wireless device performs beam training according to at least one of the SLS parameter or the BRP parameter.

In a possible manner, when the SLS parameter is valid, and the BRP parameter is included in the beam training information, the operation of the second wireless device to perform beam training according to the BRP parameter may refer to step 204, which is not performed by the embodiment of the present invention. One by one.

In another possible manner, when the SLS parameter is valid, as shown in FIG. 2E, one allocates beam training including an SLS phase of the first wireless device and the second wireless device, where the SLS phase includes four sub-phases. The ISS sub-phase, the RSS sub-phase, the Sector Sweep feedback (SSW feedback) sub-phase and the beam scan confirm the SSW ack sub-phase.

Wherein, in the ISS sub-phase of the SLS phase, the first wireless device acting as the initiating device may transmit the beacon beacon frame or the SSW frame in different transmit beam directions. The responding device of the current resource destination address is the second wireless device that is the responding device 1, and the responding device that is not the current resource destination address is the third wireless device that is the responding device 2, and the extended scheduling that can be sent by the responding device 2 through the AP The information or grant frame obtains the SLS parameters, so the responding device 2 can confirm whether there is Transmit Sector Sweep (TXSS) in the SLS phase, and the length of the TXSS.

In addition, when the field indicating the transmission sector scan training is the first value, beam training of the initiating device to the response device 2 can be performed. The responding device 2 can measure a plurality of transmit beams of the initiating device to obtain an antenna identification and a sector identification of the beam of the optimal quality.

Similarly, in the RSS sub-phase, when the field indicating the reception sector scan training is the first value, The device 1 may transmit the SSW frame in different transmit beam directions, and the current resource destination address may be the initiating device. The response device 2 can train the response beam of the response device 1 to the response device 2 by using the TXSS of the response device 1 in the RSS phase, and the response device 2 can measure the plurality of transmit beams of the response device 1 to obtain the optimal quality. Antenna identification and sector identification of the beam.

In addition, after the RSS ends, when the initiating device and the corresponding device are not AP/PCP, the initiating device may send an SSW feedback to the AP/PCP, and the responding device 1 may send the SSW ack to the AP/PCP.

It should be noted that the response device 2 obtains some beam training information, but does not feed back to the response device 1 or the initiating device.

In the embodiment of the present invention, the first wireless device may send beam training information, and indicate, by using the first reserved bit, whether the SLS parameter of the beam training information is invalid, before the beam training information is sent, when the second wireless device acquires After the beam training information is obtained, it can be determined whether the SLS parameter is invalid. When the SLS parameter is invalid and the beam training information includes the BRP parameter, the BRP parameter can be beam trained, and the beam training of the BRP parameter is passed. The BRP packet includes multiple TRN subfields, and the multiple TRNs are located in the same frame without interframe spacing, so that beam training of BRP parameters is more efficient. At the same time, it also clarifies the unclear part of the agreement when SLS is invalid, and eliminates the logic errors in the agreement, thus making the agreement more clear and standardized. In addition, since the BRP packet may further include an MID parameter, a channel parameter, and an antenna transmission parameter, the role of the BRP parameter in resource scheduling is expanded.

FIG. 3 is a schematic structural diagram of a beam training apparatus according to an exemplary embodiment. Referring to FIG. 3, the beam training apparatus may be implemented as part or all of a wireless device by software, hardware or a combination of the two. It can be the wireless device shown in Figure 1B. The beam training device can include a processing module 301 and a transmitting module 302. The processing module 301 and the sending module 302 are configured to perform step 201 in the embodiment of FIG. 2A.

Optionally, the processing module 301 is further configured to:

When the SLS parameter is an invalid parameter, setting a value of the first reserved bit of the BF Control field to a first value;

When the SLS parameter is a valid parameter, the value of the first reserved bit of the BF Control field is set to a second value.

Optionally, the BRP parameter includes an MID parameter, where the MID parameter includes an initiating device indication information and a response device indication information;

The initiating device indication information is used to indicate whether there is beam training performed by the initiating device based on the MID parameter, where the response device indication information is used to indicate whether there is beam training performed by the responding device based on the MID parameter and beam training in the BRP packet. Length information of the TRN subfield.

Optionally, the BRP parameter includes a channel parameter, where the channel parameter is located in a beam control BF Control field or a non-BF Control field, where the BF Control field and the non-BF Control field are located in extended scheduling information, an authorization frame, an authorization confirmation frame, and a measurement. In the request or directional channel quality request, the channel parameter is used to indicate the bandwidth information occupied by the training field of the BRP packet during transmission.

Optionally, the BRP package includes a data part and a training field;

The bandwidth of the training field is less than or equal to the bandwidth of the data portion.

Optionally, the BRP parameter includes an antenna transmission parameter, where the antenna parameter is used to indicate SISO or MIMO;

And performing beam training for multi-user MIMO when the type information included in the antenna transmission parameter is the first value;

When the type information included in the antenna transmission parameter is the second value, the beam training of the SISO is performed.

Optionally, when the type information included in the antenna transmission parameter indicates that the multi-user MIMO beam training is performed, the antenna transmission parameter further includes Group ID information and measurement feedback information;

The Group ID information is used for group users of multi-user MIMO indicating beam training;

The measurement feedback information is used to indicate a precoding feedback parameter that each user of the group needs to feed back and channel information for indicating the CSI.

In the embodiment of the present invention, the first wireless device may send beam training information, and indicate, by using the first reserved bit, whether the SLS parameter of the beam training information is invalid, before the beam training information is sent, when the second wireless device acquires After the beam training information is obtained, it can be determined whether the SLS parameter is invalid. When the SLS parameter is invalid and the beam training information includes the BRP parameter, the BRP parameter can be beam trained, and the beam training of the BRP parameter is passed. The BRP packet includes multiple TRN subfields, and the multiple TRNs are located in the same frame without interframe spacing, so that beam training of BRP parameters is more efficient. At the same time, it also clarifies the unclear part of the agreement when SLS is invalid, and eliminates the logic errors in the agreement, thus making the agreement more clear and standardized. In addition, since the BRP packet may further include an MID parameter, a channel parameter, and an antenna transmission parameter, the role of the BRP parameter in resource scheduling is expanded.

FIG. 4 is a schematic structural diagram of a beam training apparatus according to an exemplary embodiment. Referring to FIG. 4, the beam training apparatus may be implemented as part or all of a wireless device by software, hardware or a combination of the two. It can be the wireless device shown in Figure 1B. The beam training device can include a receiving module 401 and a processing module 402. The receiving module 401 is configured to perform step 202 in the embodiment of FIG. 2A, and the processing module 402 is configured to perform step 203, step 204, and step 205 in the embodiment of FIG. 2A.

Optionally, the processing module 402 is configured to:

Obtaining a first reserved bit from the beam training information;

Determining whether the value of the first reserved bit is a first value;

When the value of the first reserved bit is the first value, it is determined that the SLS parameter is invalid.

Optionally, the processing module 402 is further configured to:

Obtaining length information of the training field multi-beam training TRN subfield in the BRP packet included in the BRP parameter according to the BRP parameter.

In the embodiment of the present invention, the first wireless device may send beam training information, and indicate, by using the first reserved bit, whether the SLS parameter of the beam training information is invalid, before the beam training information is sent, when the second wireless device acquires After the beam training information is obtained, it can be determined whether the SLS parameter is invalid. When the SLS parameter is invalid and the beam training information includes the BRP parameter, the BRP parameter can be beam trained, and the beam training of the BRP parameter is passed. The BRP packet includes multiple TRN subfields, and the multiple TRNs are located in the same frame without interframe spacing, so that beam training of BRP parameters is more efficient. At the same time, it also clarifies the unclear part of the agreement when SLS is invalid, and eliminates the logic errors in the agreement, thus making the agreement more clear and standardized. In addition, since the BRP packet may further include an MID parameter, a channel parameter, and an antenna transmission parameter, the role of the BRP parameter in resource scheduling is expanded.

FIG. 5 is a schematic structural diagram of a wireless device according to an embodiment of the present invention. Referring to FIG. 5, the wireless device includes: a transmitter 501, a receiver 502, a processor 503, a memory 504, a communication bus 505, a memory 504, and a transmitter. The 501 and the receiver 502 are respectively connected to the processor 503 via a communication bus 505. The memory 504 stores program code, and the processor 501 is configured to call the program code.

The processor 503 is specifically configured to:

Determining beam training information, the beam training information including at least one of an SLS parameter or a BRP parameter

The transmitter 501 is used to:

Send beam training information;

The first reserved bit of the BF Control field is controlled by the beam to indicate whether the SLS parameter is an invalid parameter.

In the embodiment of the present invention, the beam training information for beam training for transmitting may include a BRP parameter in addition to the SLS parameter, so that the wireless device that receives the beam training information may utilize the BRP even if the SLS parameter is invalid. The parameters are beam trained to clarify where the protocol is unclear when the SLS parameters are invalid, and eliminate logic errors in the protocol, making the protocol clearer and more standardized.

FIG. 6 is a schematic structural diagram of a wireless device according to an embodiment of the present invention. Referring to FIG. 6, the wireless device includes: a transmitter 601, a receiver 602, a processor 603, a memory 604, a communication bus 605, a memory 604, and a transmitter. The 601 and the receiver 602 are respectively connected to the processor 603 via a communication bus 605. The memory 604 stores program code, and the processor 601 is configured to call the program code.

The receiver 602 is specifically configured to:

Obtaining beam training information, where the beam training information includes at least one of an SLS parameter or a BRP parameter;

The processor 603 is configured to: determine whether an SLS parameter included in the beam training information is invalid;

When the SLS parameter is invalid, and the BRP parameter is included in the beam training information, beam training is performed according to the BRP parameter;

When the SLS parameter is valid and the BRP parameter is included in the beam training information, beam training is performed according to at least one of the SLS parameter or the BRP parameter.

In the embodiment of the present invention, the beam training information used for beam training may include a BRP parameter in addition to the SLS parameter, so that even if the SLS parameter is invalid, the BRP parameter may be used for beam training, thereby clarifying that when the SLS parameter is invalid. When the agreement is unclear, and the logic errors in the agreement are eliminated, the agreement is more clear and standardized.

A person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium. The storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

Claims (22)

A beam training method is applied to a first wireless device, and the method includes: Transmitting beam training information, the beam training information including at least one of a sector level scanning SLS parameter or a beam optimization protocol BRP parameter; The first reserved bit of the BF Control field is used to indicate whether the SLS parameter is an invalid parameter. The method of claim 1, wherein before the sending the beam training information, the method further comprises: When the SLS parameter is an invalid parameter, setting a value of the first reserved bit of the BF Control field to a first value; When the SLS parameter is a valid parameter, the value of the first reserved bit of the BF Control field is set to a second value. The method according to claim 1, wherein the BRP parameter comprises a sector identification detection MID parameter, and the MID parameter comprises an initiating device indication information and a response device indication information; The initiating device indication information is used to indicate whether there is beam training performed by the initiating device based on the MID parameter, where the response device indication information is used to indicate whether there is beam training performed by the responding device based on the MID parameter, and BRP The beam in the packet trains the length information of the TRN subfield. The method of claim 1, wherein the BRP parameter comprises a channel parameter, the channel parameter is located in the BF Control field or a non-BF Control field, the BF Control field and the non-BF Control field The channel parameter is used to indicate the bandwidth information occupied by the training field of the BRP packet during the transmission process, in the extended scheduling information, the authorization frame, the authorization confirmation frame, the measurement request, or the directional channel quality request. The method of claim 4, wherein the BRP packet includes a data portion and a training field; The bandwidth of the training field is less than or equal to the bandwidth of the data portion. The method according to claim 1, wherein the BRP parameter comprises an antenna transmission parameter, and the antenna parameter is used to indicate a single antenna transmission SISO or a multi-antenna transmission MIMO; And performing beam training for multi-user MIMO when the type information included in the antenna transmission parameter is the first value; And performing beam training of the SISO when the type information included in the antenna transmission parameter is a second value. The method according to claim 6, wherein when the type information included in the antenna transmission parameter indicates beam training of the multi-user MIMO, the antenna transmission parameter further includes group identification group ID information and measurement feedback. information; The Group ID information is used to indicate a packet user of multi-user MIMO of beam training; The measurement feedback information is used to indicate a precoding feedback parameter that each user of the packet needs to feed back and channel information for indicating that the feedback channel state information CSI is located. A beam training method is applied to a second wireless device, where the method includes: Obtaining beam training information, where the beam training information includes at least one of an SLS parameter or a BRP parameter; Determining whether the SLS parameter included in the beam training information is invalid; When the SLS parameter is invalid, and the BRP parameter is included in the beam training information, performing beam training according to the BRP parameter; When the SLS parameter is valid, and the BRP parameter is included in the beam training information, beam training is performed according to at least one of the SLS parameter or the BRP parameter. The method according to claim 8, wherein the determining whether the SLS parameter included in the beam training information is invalid includes: Obtaining a first reserved bit from the beam training information; Determining whether the value of the first reserved bit is a first value; When the value of the first reserved bit is the first value, it is determined that the SLS parameter is invalid. The method according to claim 8, wherein the performing beam training according to the BRP parameter comprises: Obtaining length information of the training field beam training TRN subfield in the BRP packet included in the BRP parameter according to the BRP parameter. A beam training device is applied to a first wireless device, wherein the device comprises: a processing module, configured to determine beam training information, where the beam training information includes at least one of an SLS parameter or a BRP parameter; a sending module, configured to send the beam training information; The first reserved bit of the BF Control field is used to indicate whether the SLS parameter is an invalid parameter. The device according to claim 11, wherein the processing module is further configured to: When the SLS parameter is an invalid parameter, setting a value of the first reserved bit of the BF Control field to a first value; When the SLS parameter is a valid parameter, the value of the first reserved bit of the BF Control field is set to a second value. The apparatus according to claim 11, wherein the BRP parameter comprises an MID parameter, and the MID parameter comprises an initiating device indication information and a response device indication information; The initiating device indication information is used to indicate whether there is beam training performed by the initiating device based on the MID parameter, where the response device indication information is used to indicate whether there is beam training performed by the responding device based on the MID parameter, and BRP The beam in the packet trains the length information of the TRN subfield. The apparatus according to claim 11, wherein said BRP parameter comprises a channel parameter, said channel parameter being located in said BF Control field or a non-BF Control field, said BF Control field and said non-BF Control field In the extended scheduling information, the authorization frame, the authorization confirmation frame, the measurement request, or the directional channel quality request, the channel parameter is used to indicate that the training field of the BRP packet is transmitting The bandwidth information occupied during the transmission. The apparatus according to claim 14, wherein said BRP packet includes a data portion and a training field; The bandwidth of the training field is less than or equal to the bandwidth of the data portion. The apparatus according to claim 11, wherein said BRP parameters comprise antenna transmission parameters, said antenna parameters being used to indicate SISO or MIMO; And performing beam training for multi-user MIMO when the type information included in the antenna transmission parameter is the first value; And performing beam training of the SISO when the type information included in the antenna transmission parameter is a second value. The apparatus according to claim 16, wherein when the type information included in the antenna transmission parameter indicates beam training of the multi-user MIMO, the antenna transmission parameter further includes a group identification group ID information and measurement feedback. information; The Group ID information is used to indicate a packet user of multi-user MIMO of beam training; The measurement feedback information is used to indicate a precoding feedback parameter that each user of the packet needs to feed back and channel information for indicating that the feedback channel state information CSI is located. A beam training device is applied to a second wireless device, wherein the device comprises: The receiving module is used to: Obtaining beam training information, where the beam training information includes at least one of an SLS parameter or a BRP parameter; The processing module is used to: Determining whether the SLS parameter included in the beam training information is invalid; When the SLS parameter is invalid, and the BRP parameter is included in the beam training information, performing beam training according to the BRP parameter; When the SLS parameter is valid, and the BRP parameter is included in the beam training information, beam training is performed according to at least one of the SLS parameter or the BRP parameter. The device of claim 18, wherein the processing module is further configured to: Obtaining a first reserved bit from the beam training information; Determining whether the value of the first reserved bit is a first value; When the value of the first reserved bit is the first value, it is determined that the SLS parameter is invalid. The device of claim 18, wherein the processing module is further configured to: Obtaining length information of the training field multi-beam training TRN subfield in the BRP packet included in the BRP parameter according to the BRP parameter. A wireless device, comprising: a transmitter, a receiver, a processor, a memory, and a communication bus; the memory, the transmitter, and the receiver are respectively coupled to the processor via a communication bus Connected, the memory stores program code, and the processor is used to call program code; The processor is specifically configured to: Determining beam training information, the beam training information including at least one of an SLS parameter or a BRP parameter; The transmitter is used to: Transmitting the beam training information; The first reserved bit of the BF Control field is used to indicate whether the SLS parameter is an invalid parameter. A wireless device, comprising: a transmitter, a receiver, a processor, a memory, and a communication bus; the memory, the transmitter, and the receiver are respectively coupled to the processor via a communication bus Connected, the memory stores program code, and the processor is used to call program code; Wherein the receiver is used to: Obtaining beam training information, where the beam training information includes at least one of an SLS parameter or a BRP parameter; The processor is specifically configured to: Determining whether the SLS parameter included in the beam training information is invalid; When the SLS parameter is invalid, and the BRP parameter is included in the beam training information, performing beam training according to the BRP parameter; When the SLS parameter is valid, and the BRP parameter is included in the beam training information, beam training is performed according to at least one of the SLS parameter or the BRP parameter.

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