CN107637155B

CN107637155B - Beam adjustment method and device

Info

Publication number: CN107637155B
Application number: CN201580080410.4A
Authority: CN
Inventors: 赵牧
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2015-06-24
Filing date: 2015-06-24
Publication date: 2020-08-25
Anticipated expiration: 2035-06-24
Also published as: CN107637155A; WO2016206007A1

Abstract

A method of beam adjustment, the method comprising: an access point sends a beam adjustment protocol (BRP) frame, and a plurality of sending training domains sent by different sending beams are attached behind the BRP frame so that a plurality of stations receiving the BRP frame receive and measure the quality of received signals of the sending training domains sent by the different sending beams; the access point sends a polling frame to each station in the plurality of stations, and the polling frame is used for obtaining the measurement result of the station on the quality of the received signal; and the access point acquires a target transmission beam corresponding to a target transmission training domain with the optimal station received signal quality according to the measurement result returned by each station, and determines the target transmission beam as the optimal transmission beam for the access point to transmit data to the station. The invention can adjust the optimal sending beam of the access point to a plurality of stations by sending the BRP frame once, and has high adjusting efficiency.

Description

Beam adjustment method and device

Technical Field

The present invention relates to the field of wireless network technologies, and in particular, to a method and an apparatus for adjusting a beam.

Background

IEEE 802.11ad is a technical protocol for standardizing Wireless Local Area Network (WLAN) devices operating in a 60GHz band, and a network that communicates using the 802.11ad protocol is generally called a Directional Multi-Gigabit (DMG) network, and in the DMG network, the network is generally composed of an access point and a plurality of stations, the access point in the DMG network generally uses a Directional antenna to transmit data to each station due to the frequency band characteristic, the Directional antenna is different from a conventional omnidirectional antenna, and the Directional antenna generally has an optimal transmission beam with the best received signal quality for a certain station. The optimal transmission Beam between the access point and the station is usually selected through beamforming training (BF training), the BF training process is divided into two stages, the first stage is sector-level scanning (SLS), the second stage is Beam-steering Protocol (BRP), the SLS stage generally performs rough adjustment on the access point and the station, and the BRP stage performs precise training and adjustment on the access point and the station based on the SLS. Wherein a Beam adjustment step (BRT) of the BRP stage is used to adjust a transmit Beam and/or a receive Beam between the access point and the station. When used to adjust the transmit beam of an access point, the specific adjustment steps are as follows:

the access point unicasts a BRP frame to a station, the BRP frame is accompanied by a plurality of transmit training (TRN-T) domains, and each TRN-T domain is transmitted by different transmission beams;

the station receives the BRP frame and a plurality of TRN-T domains attached behind the BRP frame, measures channel parameters of the BRP frame, replies the BRP frame to the access point, and identifies the TRN-T domain with the optimal received signal quality in the BRP frame;

and the access point determines the optimal transmission beam for the station according to the reply of the station.

In the prior art, when an access point adjusts its own transmission beam, it can unicast a BRP frame to a station and its TRN-T fields transmitted by a plurality of different transmission beams following the BRP frame each time; the transmission beam of the access point to one station can only be adjusted by one transmission, and because the TRN-T domain is a very long sequence and the transmission takes a long time, the transmission beam adjustment method of the access point in the prior art has extremely low efficiency.

Disclosure of Invention

The embodiment of the invention provides a beam adjusting method and device, which can adjust the optimal transmission beam of an access point for a plurality of stations by transmitting a BRP frame once, and has high adjusting efficiency.

A first aspect of the present invention provides a beam adjustment method, including:

an access point transmits a BRP frame, wherein the BRP frame is accompanied by a plurality of transmission training domains transmitted by different transmission beams, so that a plurality of stations receiving the BRP frame receive and measure the received signal quality of the transmission training domains transmitted by the different transmission beams;

the access point sends a polling frame to each station in the plurality of stations, wherein the polling frame is used for obtaining the measurement result of the station on the quality of the received signal;

and the access point acquires a target transmission beam corresponding to a target transmission training domain with the optimal received signal quality of the station according to the measurement result returned by each station, and determines the target transmission beam as the optimal transmission beam for the access point to transmit data to the station.

Based on the first aspect, in a first possible implementation manner of the first aspect, the measurement result includes a target transmission training field corresponding to an optimal received signal quality in the received signal qualities measured by the station.

Based on the first aspect, in a second possible implementation manner of the first aspect, the sending, by the access point, a BRP frame includes:

the access point broadcasts a BRP frame to a target sector, the target sector including a plurality of stations, the BRP frame including a broadcast MAC address.

In a third possible implementation manner of the first aspect, based on the second possible implementation manner of the first aspect, before the broadcasting, by the access point, the BRP frame to the target sector, the method further includes:

the access point obtains a station identifier of each station in the plurality of stations in a target sector through a sector-level scanning stage;

the access point transmitting a polling frame to each of the plurality of stations, including:

and the access point sends a polling frame to the station identified by the station identification according to the station identification of each station in the plurality of stations.

In a fourth possible implementation manner of the first aspect, based on the first aspect, the sending, by the access point, a BRP frame includes:

the access point multicasts a BRP frame, wherein the BRP frame carries a group identifier, and the group identifier is used for identifying a plurality of stations for receiving the BRP frame.

In a fifth possible implementation manner of the first aspect, based on the fourth possible implementation manner of the first aspect, the sending, by the access point, a polling frame to each of the plurality of stations includes:

and the access point sends a polling frame to the station identified by the group identification carried in the BRP frame.

A second aspect of the present invention provides a beam adjustment method, including:

a station receives a BRP frame sent by an access point, wherein the BRP frame is accompanied by a plurality of sending training domains sent by different sending beams;

the station receives and measures the quality of the received signals of the transmission training domains transmitted by the different transmission beams according to the BRP frame, and generates a measurement result according to the quality of the received signals;

and the station receives the polling frame sent by the access point and returns the measurement result to the access point according to the polling frame, wherein the measurement result is used for determining the optimal sending beam for the access point to send data to the station.

Based on the second aspect, in a first possible implementation manner of the second aspect, the measurement result includes a target transmission training field corresponding to an optimal received signal quality in the received signal qualities measured by the station.

In a second possible implementation manner of the second aspect, based on the second aspect, if the access point broadcasts and transmits the BRP frame to a first target sector, and the BRP frame includes a first identifier of the first target sector;

before the station receives the BRP frame sent by the access point, the method further includes:

the site obtains a second target sector to which the site belongs through a sector-level scanning stage, and stores a second identifier of the second target sector;

the station receives and measures the quality of the received signals of the transmission training fields transmitted by the different transmission beams according to the BRP frame, and the method comprises the following steps:

and the station matches the first identifier with the second identifier in the BRP frame, and receives and measures the quality of the received signals of the transmission training domains transmitted by different transmission beams if the first identifier and the second identifier are consistent.

In a third possible implementation manner of the second aspect, based on the second aspect, if the access point multicasts the BRP frame, and the BRP frame includes a first group identifier to which a station receiving the BRP frame belongs;

the station receives and measures the quality of the received signals of the transmission training domains transmitted by the different transmission beams according to the BRP frame, including;

and the station matches the second group of identifiers with the first group of identifiers in the BRP frame, and if the second group of identifiers are consistent with the first group of identifiers in the BRP frame, the station receives and measures the quality of the received signals of the transmission training domains transmitted by different transmission beams.

The third aspect of the present invention provides a beam adjusting apparatus applied to an access point, including:

a transceiver module, configured to transmit a BRP frame, where the BRP frame is followed by multiple transmission training fields transmitted in different transmission beams, so that multiple stations receiving the BRP frame receive and measure received signal qualities of the transmission training fields transmitted in the different transmission beams;

the transceiver module is further configured to send a polling frame to each of the plurality of stations, where the polling frame is used to obtain a measurement result of the station on the quality of the received signal;

and the processing module is used for acquiring a target transmission beam corresponding to a target transmission training domain with the optimal signal receiving quality of the station according to the measurement result returned by each station, and determining the target transmission beam as the optimal transmission beam for the access point to transmit data to the station.

Based on the third aspect, in a first possible implementation manner of the third aspect, the measurement result includes a target transmission training field corresponding to an optimal received signal quality in the received signal qualities measured by the station.

Based on the third aspect, in a second possible implementation manner of the third aspect, the sending and receiving module specifically includes:

the transceiver module broadcasts a BRP frame to a target sector, the target sector including a plurality of sites, the BRP frame including a broadcast MAC address.

In a third possible implementation manner of the third aspect, based on the second possible implementation manner of the third aspect, the transceiver module is further configured to obtain, through a sector-level scanning phase, a station identifier of each station in the plurality of stations in the target sector;

the sending, by the transceiver module, the polling frame to each of the plurality of stations specifically includes:

and the transceiver module sends a polling frame to the station identified by the station identification according to the station identification of each station in the plurality of stations.

Based on the third aspect, in a fourth possible implementation manner of the third aspect, the sending and receiving module specifically includes:

the receiving and sending module multicasts a BRP frame, wherein the BRP frame carries a group identifier, and the group identifier is used for identifying a plurality of stations for receiving the BRP frame.

Based on the fourth possible implementation manner of the third aspect, in a fifth possible implementation manner of the third aspect, the sending, by the transceiver module, a polling frame to each of the plurality of stations specifically includes:

and the transceiver module sends a polling frame to the station identified by the group identifier carried in the BRP frame.

A fourth aspect of the present invention provides a beam adjusting apparatus, applied to a station, including:

a receiving and sending module, configured to receive a BRP frame sent by an access point, where the BRP frame is followed by multiple transmission training fields sent in different transmission beams;

the processing module is used for receiving and measuring the quality of the received signals of the transmission training domains transmitted by the different transmission beams according to the BRP frame and generating a measurement result according to the quality of the received signals;

the transceiver module is further configured to receive a polling frame sent by the access point, and return the measurement result to the access point according to the polling frame, where the measurement result is used to determine an optimal transmission beam for the access point to transmit data to the station.

Based on the fourth aspect, in a first possible implementation manner of the fourth aspect, the measurement result includes a target transmission training field corresponding to an optimal received signal quality in the received signal qualities measured by the station.

In a second possible implementation manner of the fourth aspect, if the access point broadcasts and transmits the BRP frame to a first target sector, the BRP frame includes a first identifier of the first target sector;

the transceiver module is further configured to obtain a second target sector to which the site belongs through a sector-level scanning stage, and store a second identifier of the second target sector;

the receiving and measuring, by the processing module according to the BRP frame, the quality of the received signal in the transmission training field transmitted by the different transmission beams specifically includes:

and the processing module matches the first identifier with the second identifier in the BRP frame, and receives and measures the quality of the received signals of the transmission training domains transmitted by different transmission beams if the first identifier and the second identifier are consistent in matching.

In a third possible implementation manner of the fourth aspect, based on the fourth aspect, if the access point multicasts the BRP frame, and the BRP frame includes a first group identifier to which a station receiving the BRP frame belongs;

the processing module receives and measures the received signal quality of the transmission training fields transmitted by the different transmission beams according to the BRP frame;

and the processing module matches the second group of identifiers with the first group of identifiers in the BRP frame, and receives and measures the quality of the received signals of the transmission training domains transmitted by different transmission beams if the second group of identifiers is consistent with the first group of identifiers in the BRP frame.

In the embodiment of the invention, an access point sends a BRP frame, a plurality of sending training domains sent by different sending beams are attached behind the BRP frame, a plurality of stations receiving the BRP frame receive and measure the receiving signal quality of the sending training domains sent by the different sending beams attached behind the BRP frame, the access point sends a polling frame to each station in the stations, the polling frame is used for obtaining the measurement result of the station on the receiving signal quality, the access point obtains a target sending beam corresponding to a target sending training domain with the optimal station receiving signal quality according to the measurement result returned by each station, and the target sending beam is determined as the optimal sending beam for the access point to send data to the station. In this way, the optimal transmission beam of the access point for a plurality of stations can be adjusted by transmitting the BRP frame once, and the adjustment efficiency is high.

Drawings

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

Fig. 1 is a system diagram of a WLAN deployment scenario provided in an embodiment of the present invention

Fig. 2 is a schematic flowchart of a beam adjustment method according to an embodiment of the present invention;

fig. 3 is a schematic flow chart of another beam adjustment method according to an embodiment of the present invention;

fig. 4 is a flowchart illustrating another beam adjustment method according to an embodiment of the present invention;

fig. 5 is a schematic diagram of interaction between an access point and a station according to an embodiment of the present invention;

fig. 6 is a flowchart illustrating another beam adjustment method according to an embodiment of the present invention;

fig. 7 is a flowchart illustrating another beam adjustment method according to an embodiment of the present invention;

fig. 8 is a flowchart illustrating another beam adjustment method according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a beam adjustment apparatus applied to an access point according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of another beam adjustment apparatus applied to an access point according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a beam adjustment apparatus applied to a station according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of another beam adjustment apparatus applied to a station according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The beam adjusting method of the embodiment of the invention can be applied to a DMG network supporting an 802.11ad protocol. As shown in fig. 1, which is a system diagram of a typical WLAN deployment scenario, an access point and a plurality of stations STA are included in a network, and the access point communicates with stations STA1, STA2, and STA3, respectively. The Access station may be a personal Basic Service Set (BSS) control Point (PCP) or an Access Point (Access Point, AP), and the PCP coordinates other terminal stations in the PBSS to Access the wireless medium. The AP provides access services to the terminal stations in the WLAN, and manages and coordinates the terminal stations, etc. Due to the band characteristics of DMG networks, PCP/AP typically employs directional antennas to transmit data to STA1, STA2, and STA 3. Using directional antennas requires finding the best transmit beam for transmitting data to STA1, STA2, and STA3, respectively, to maximize the station received signal quality. The access point generally obtains an optimal transmission beam for transmitting data to each station through BFtraining.

The two sites carrying out BF tracing respectively serve as an initiator and a responder. In the BF tracing process between the PCP/AP and the STA of the DMG network, the PCP/AP generally serves as an initiator, and the STA generally serves as a responder. The BF training process is divided into two phases. The first phase is SLS and the second phase is BRP, wherein the BRP phase includes a beam adjustment step for adjusting a transmit beam and/or a receive beam of the PCP/AP and/or STA. In the embodiment of the present invention, when the PCP/AP is used to adjust the transmission beam of the PCP/AP to obtain the optimal transmission beam for the PCP/AP to transmit data to the STA, the PCP/AP transmits a BRP frame in a broadcast or multicast manner, the BRP frame is followed by a plurality of TRN-T fields transmitted by different transmission beams, each station of a plurality of stations receiving the BRP frame sequentially measures the received signal quality of the TRN-T field transmitted by the different transmission beams, as shown in fig. 1, if STA1, STA2, and STA3 all receive the BRP frame, each station receives and measures the received signal quality of the TRN-T field after receiving the BRP frame itself, and returns the target TRN-T field with the best received signal quality to the PCP/AP, and the PCP/AP determines the transmission beam corresponding to the target TRN-T field as the optimal transmission beam for transmitting data to the station, it should be noted that target TRN-T fields returned by each station in STA1, STA2, and STA3 may be different, and therefore, optimal transmission beams corresponding to each station may be different. In this beam adjustment method, the PCP/AP can adjust the transmission beams of a plurality of stations by transmitting a BRP frame once, and therefore, the adjustment efficiency is high.

Referring to fig. 2, a flow chart of a beam adjustment method according to an embodiment of the present invention is shown, where the beam adjustment method includes steps S200-S202;

s200, an access point transmits a BRP frame, wherein the BRP frame is accompanied by a plurality of transmission training domains transmitted by different transmission beams, so that a plurality of stations receiving the BRP frame receive and measure the received signal quality of the transmission training domains transmitted by the different transmission beams;

in the embodiment of the invention, the PCP/AP can send a BRP frame to a plurality of STAs, the BRP frame is marked as training for adjusting the sending beam, a plurality of TRN-T domains are attached to the back of the BRP frame, the TRN-T domains are very long sequences for training the beam, and one TRN-T domain corresponds to one sequence. The PCP/AP appends the same number of TRN-T fields after the BRP frame, depending on the number of transmit beams to be trained. Each TRN-T field is transmitted with a different transmit beam to be trained, which is typically selected based on the antenna training results of the SLS phase.

Each STA in the STAs receiving the BRP frame continues to receive the TRN-T fields appended behind the BRP frame and measures the channel parameters of the TRN-T fields.

S201, the access point sends a polling frame to each station in the plurality of stations, and the polling frame is used for obtaining the measurement result of the station on the quality of the received signal;

in the embodiment of the invention, each STA in a plurality of STAs waits for the polling of the PCP/AP after measuring the quality of the received signal of the TRN-T domain transmitted by different transmission beams. The PCP/AP sequentially transmits a polling frame to each of a plurality of stations that receive the BRP frame. Optionally, the PCP/AP sends the polling frame in a manner that after the PCP/AP sends the polling frame to a certain STA, the PCP/AP waits for a certain period of time, and if the PCP/AP receives the BRP frame replied by the STA in the certain period, the PCP/AP immediately sends the polling frame to the next STA. If the PCP/AP does not receive the BRP frame replied by the STA in the period, the PCP/AP sends a polling frame to the next STA after the period is over.

Specifically, optionally, as shown in fig. 5, it is a schematic diagram of interaction between a PCP/AP and an STA provided in the present invention; as shown in the figure, the PCP/AP sends a BRP frame, which is followed by multiple TRN-T fields, STA1, STA2, and STA3 may receive the BRP frame, respectively, wait for a period of time, and then send a first polling frame to STA1, and after receiving the first polling frame, STA1 replies a BRP frame to the PCP/AP, where the BRP frame carries the measurement result of the received signal quality measured by STA 1; after receiving the BRP frame returned by STA1, the PCP/AP immediately sends a second polling frame to STA2, and after receiving the second polling frame, STA2 replies the BRP frame to the PCP/AP, where the BRP frame carries the measurement result of the received signal quality measured by STA 2; after receiving the BRP frame returned by STA2, the PCP/AP immediately sends a third polling frame to STA3, and after receiving the third polling frame, STA3 replies the BRP frame to the PCP/AP, where the BRP frame carries the measurement result of the received signal quality measured by STA 3.

It should be noted that the PCP/AP transmits the BRP frame using a directional antenna (e.g., the antenna is only directed to one or several adjacent target sectors), so that only STAs in the target sector can receive the BRP frame. The PCP/AP can know which STAs correspond to which sector of itself during the SLS phase, and thus the PCP/AP knows to which STAs to send polling frames.

The PCP/AP sends the polling frame to the STA to obtain a measurement result of the STA on the received signal quality, and optionally, the measurement result may be a target transmission training field with the best signal quality among the received signal qualities of the TRN-T fields sent by different transmission beams measured by the STA or an identifier of the target transmission training field, or may be several TRN-T fields with the best signal quality among the received signal qualities of the TRN-T fields sent by different transmission beams measured by the STA (for example, the TRN-T fields are sorted according to the signal quality and sorted at the top), and the measurement result is not limited herein.

S202, the access point obtains a target transmission beam corresponding to a target transmission training domain with the best received signal quality of the station according to the measurement result returned by each station, and determines the target transmission beam as the best transmission beam for the access point to transmit data to the station.

In the embodiment of the invention, after receiving the polling frame sent by the PCP/AP, the STA replies a BRP frame, wherein the BRP frame carries the measurement result, and for example, if the measurement result is the target TRN-T domain with the best received signal quality, the target TRN-T domain is identified in the BRP frame.

No matter what form the measurement result exists, the PCP/AP acquires a target transmission beam corresponding to a target TRN-T domain with the best station received signal quality according to the measurement result returned by each STA, and the target transmission beam corresponding to the target TRN-T domain is used for transmitting the target TRN-T domain when the PCP/AP transmits a BRP frame. And the PCP/AP determines the target transmission beam as an optimal transmission beam for the PCP/AP to transmit data to the STA. It should be noted that, if the optimal transmission beam is not found, the PCP/AP transmits multiple TRN-T fields using other transmission beams, and repeats the above process.

Referring to fig. 3, a schematic flow chart of another beam adjustment method according to an embodiment of the present invention is shown, where the beam adjustment method according to the present embodiment includes steps S300-S303;

s300, the access point obtains the station identification of each station in the plurality of stations in the target sector through a sector-level scanning stage;

in the embodiment of the present invention, the target sector may be a certain sector of the directional antenna or several adjacent sectors of the directional antenna. When performing beamforming training with an STA in a target sector in an SLS stage, a PCP/AP may obtain station information of each station in multiple stations in the target sector, where the station information may be a station identifier of the station.

S301, the access point broadcasts a BRP frame to a target sector, the target sector comprises a plurality of sites, and the BRP frame comprises a broadcast MAC address.

In the embodiment of the present invention, the PCP/AP may broadcast the BRP frame to the target sector in a broadcast manner, the target sector includes a plurality of STAs, and a destination address of the BRP frame is a Media Access Control (MAC) address, so that STAs in the target sector can receive the BRP frame. The BRP frame is marked as training for adjusting the transmission beam, a plurality of TRN-T domains transmitted by different transmission beams are attached to the BRP frame, the number of the TRN-T domains corresponds to the number of the transmission beams needing training one by one, namely, one TRN-T domain is transmitted by one transmission beam. The transmit beam to be trained is selected based on the antenna training results of the SLS phase.

S302, the access point sends a polling frame to the station identified by the station identification according to the station identification of each station in the plurality of stations.

In the embodiment of the invention, as the PCP/AP broadcasts and sends the BRP frame to the target sector, all STAs in the target sector can receive the BRP frame, and the subsequent PCP/AP needs to send polling frames to the STAs in the target sector one by one. Optionally, a specific manner of sending the polling frame may be that the PCP/AP waits for a certain period of time after sending the polling frame to a certain STA. If the PCP/AP receives the BRP frame replied by the STA in the period, the PCP/AP immediately sends a polling frame to the next STA. If the PCP/AP does not receive the BRP frame replied by the STA in the period, the PCP/AP sends a polling frame to the next STA after the period is over.

And S303, the access point acquires a target transmission beam corresponding to a target transmission training domain with the optimal received signal quality of the station according to the measurement result returned by each station, and determines the target transmission beam as the optimal transmission beam for the access point to transmit data to the station.

Step S303 in the embodiment of the present invention please refer to step S202 in the embodiment of fig. 2, which is not described herein again.

Referring to fig. 4, a flowchart of another beam adjustment method according to an embodiment of the present invention is shown, where the beam adjustment method includes steps S400-S402;

s400, the access point multicasts a BRP frame, the BRP frame carries a group identifier, and the group identifier is used for identifying a plurality of stations for receiving the BRP frame.

In this embodiment of the present invention, the PCP/AP may send a BRP frame in a multicast form, where the BRP frame carries a Group identifier, where the Group identifier is used to identify multiple stations that receive the BRP frame, and for example, the Group identifier may be a multicast MAC address or a Group identifier (Group ID). The BRP frame is marked as training for adjusting the transmission beam, a plurality of TRN-T domains transmitted by different transmission beams are attached to the BRP frame, the number of the TRN-T domains corresponds to the number of the transmission beams needing training one by one, namely, one TRN-T domain is transmitted by one transmission beam. The transmit beam to be trained is selected based on the antenna training results of the SLS phase.

S401, the access point sends a polling frame to the station identified by the group identifier carried in the BRP frame.

In the embodiment of the invention, the PCP/AP sends the polling frame to the STA identified by the group identifier carried in the BRP frame, and usually a plurality of STAs have the same group identifier. Optionally, a specific manner of sending the polling frame may be that the PCP/AP waits for a certain period of time after sending the polling frame to a certain STA. If the PCP/AP receives the BRP frame replied by the STA in the period, the PCP/AP immediately sends a polling frame to the next STA. If the PCP/AP does not receive the BRP frame replied by the STA in the period, the PCP/AP sends a polling frame to the next STA after the period is over.

S402, the access point obtains a target transmission beam corresponding to a target transmission training domain with the best signal receiving quality of the station according to the measurement result returned by each station, and determines the target transmission beam as the best transmission beam for the access point to transmit data to the station.

Step S402 of the present embodiment refers to step S202 of fig. 2, which is not described herein again.

Referring to fig. 6, a flow chart of another beam adjustment method according to an embodiment of the present invention is shown, where the beam adjustment method of the present embodiment includes steps S600-S602;

s600, a station receives a BRP frame sent by an access point, wherein a plurality of sending training domains sent by different sending beams are attached to the BRP frame;

in the embodiment of the invention, if the PCP/AP sends the BRP frame to the target sector in a broadcasting mode, the STA in the target sector can receive the BRP frame; if the PCP/AP sends the BRP frame in a multicast format, the STA whose group identifier matches the group identifier in the BRP frame may receive the BRP frame. The BRP frame is marked as training for adjusting the transmission beam, a plurality of TRN-T domains transmitted by different transmission beams are attached to the BRP frame, the number of the TRN-T domains corresponds to the number of the transmission beams needing training one by one, namely, one TRN-T domain is transmitted by one transmission beam. The transmit beam to be trained is selected based on the antenna training results of the SLS phase.

S601, the station receives and measures the quality of the received signals of the transmission training domains transmitted by the different transmission beams according to the BRP frame, and generates a measurement result according to the quality of the received signals;

in the embodiment of the present invention, after receiving the BRP frame, the STA performs judgment and analysis on the BRP frame to determine whether to continue receiving and measuring the received signal quality of the multiple TRN-T domains attached to the BRP frame, and optionally, the determination method needs to be determined according to the method of transmitting the BRP frame by the PCP/AP, for example, if the PCP/AP transmits the BRP frame in a multicast form, the STA needs to match its own group identifier with the group identifier in the BRP frame, and if the matching is consistent, continues receiving and measuring the received signal quality of the multiple TRN-T domains attached to the BRP frame.

The STA generates the measurement result according to the measured received signal quality, and the specific generation manner may be multiple, for example, the received signal qualities of different TRN-T domains measured by the STA are sorted in order from superior to inferior, and the TRN-T domains sorted in the top preset number are selected as the measurement result; or the measurement result may be generated by using, as the measurement result, a target TRN-T field with the best received signal quality or an identification target of the TRN-T field among the received signal qualities of different TRN-T fields measured by the STA.

S602, the station receives the polling frame sent by the access point, and returns the measurement result to the access point according to the polling frame, wherein the measurement result is used for determining the optimal sending beam for the access point to send data to the station.

In the embodiment of the invention, the PCP/AP sequentially sends polling frames to the STAs in order to obtain the measurement result of each STA, after the STA receives the polling frames sent by the PCP/AP, the measurement result is returned to the PCP/AP according to the polling frames, the measurement result is used for determining the optimal sending wave beam for sending data to the STA by the PCP/AP, and the optimal sending wave beam can ensure that the STA achieves the optimal receiving signal quality when receiving the data sent by the PCP/AP.

Referring to fig. 7, which is a flowchart illustrating a method for adjusting a beam according to another embodiment of the present invention, if the access point broadcasts and sends the BRP frame to a first target sector, and the BRP frame includes a first identifier of the first target sector; as shown in the figure, the beam adjustment method of the present embodiment includes steps S700 to S703;

s700, the site obtains a second target sector to which the site belongs through a sector-level scanning stage, and stores a second identifier of the second target sector;

in the embodiment of the invention, when the beam forming training is carried out between the PCP/AP and the STA, the STA can obtain the second target sector to which the STA belongs through the SLS stage of the beam forming training, and the STA stores the second identifier of the second target sector. It should be noted that the second identifier may be composed of a transmit Antenna identifier (TX Antenna ID) and a transmit Sector identifier (TX Sector ID) corresponding to the STA.

S701, a station receives a BRP frame sent by an access point, wherein a plurality of sending training domains sent by different sending beams are attached to the BRP frame;

step S701 according to the embodiment of the present invention please refer to step S600 according to the embodiment of fig. 6, which is not described herein again.

S702, the station matches the first identifier with the second identifier in the BRP frame, and if the first identifier and the second identifier are consistent, the station receives and measures the received signal quality of the transmission training fields transmitted by different transmission beams, and generates a measurement result according to the received signal quality;

in the embodiment of the invention, when the PCP/AP broadcasts and sends the BRP frame in the first target sector in a broadcasting mode, the BRP frame comprises a first identifier of the first target sector; the first identifier may also be composed of a transmit Antenna identifier (TX Antenna ID) and a transmit Sector identifier (TX Sector ID). As a general rule, if a PCP/AP broadcasts and transmits a BRP frame in a first target sector, only STAs in the first target sector may receive the BRP frame, but there may be an exception, for example, if a certain STA is in an edge portion of the first target sector but does not belong to the first target sector, the certain STA may also receive the BRP frame, so to ensure that the PCP/AP performs transmit beam training on the STAs in the first target sector, it is necessary to match a first identifier in the BRP frame with a second identifier of the STA itself, and if the first identifier matches the second identifier, the PCP/AP receives and measures the quality of a received signal in a TRN-T field transmitted by different transmit beams, and generates a measurement result according to the quality of the received signal.

Specifically, optionally, after receiving the BRP frame, the STA continues to check whether a TX Antenna ID and/or a TX Sector ID in a BRP request field (BRP Requestfield) therein is consistent with a TX Antenna ID and/or a TX Sector ID corresponding to the PCP/AP trained in the SLS stage. If the matching is consistent, continuously receiving a plurality of TRN-T domains attached behind the TRN-T domains and measuring the channel parameters of the TRN-T domains, and then waiting for a polling frame of the PCP/AP; otherwise, the BRP frame is dropped and the plurality of TRN-T fields appended thereto are no longer received.

It should be noted that the measurement result may exist in various forms, and is not limited herein. For example, the received signal qualities of different TRN-T domains measured by the STA may be sorted in order from good to bad, and the TRN-T domains sorted in the top preset number are selected as the measurement results; or the target TRN-T field with the best received signal quality or the identification target of the TRN-T field among the received signal qualities of different TRN-T fields measured by the STA may be used as the measurement result.

And S703, the station receives the polling frame sent by the access point, and returns the measurement result to the access point according to the polling frame, wherein the measurement result is used for determining the optimal sending beam for the access point to send data to the station.

Step S703 in the embodiment of the present invention please refer to step S602 in the embodiment of fig. 6, which is not described herein again.

Referring to fig. 8, which is a flowchart illustrating a beam adjustment method according to another embodiment of the present invention, if the access point multicasts the BRP frame, and the BRP frame includes a first group identifier to which a station receiving the BRP frame belongs; as shown in the figure, the beam adjustment method of the present embodiment includes steps S800-S802;

s800, a station receives a BRP frame sent by an access point, wherein a plurality of sending training domains sent by different sending beams are attached to the BRP frame;

step S800 in the embodiment of the present invention please refer to step S600 in fig. 6, which is not described herein again.

S801, the station matches a second group of identifiers with a first group of identifiers in the BRP frame, if the second group of identifiers are consistent with the first group of identifiers in the BRP frame, the station receives and measures the quality of received signals of the transmission training fields transmitted by different transmission beams, and generates a measurement result according to the quality of the received signals;

in the embodiment of the invention, when the PCP/AP sends the BRP frame in a multicast form, the BRP frame carries the first group identifier, the first group identifier is used for identifying the STA receiving the BRP frame, and the group identifiers of the STAs are usually the same, so that when the BRP frame is sent in a sampling multicast form, a plurality of STAs can receive the BRP frame. The group identification may be a multicast MAC address. The training for transmit beam adjustment is identified in the BRP frame and a plurality of TRN-T fields are appended behind the BRP frame.

After receiving the BRP frame, the STA matches the second group of identification with the first group of identification in the BRP frame, if the matching is consistent, the STA continues to receive and measure the quality of the received signals of a plurality of TRN-T domains attached behind the BRP frame, and generates a measurement result according to the quality of the received signals. It should be noted that the measurement result may exist in various forms, and is not limited herein. For example, the received signal qualities of different TRN-T domains measured by the STA may be sorted in order from good to bad, and the TRN-T domains sorted in the top preset number are selected as the measurement results; or the target TRN-T field with the best received signal quality or the identification target of the TRN-T field among the received signal qualities of different TRN-T fields measured by the STA may be used as the measurement result.

S802, the station receives the polling frame sent by the access point, and returns the measurement result to the access point according to the polling frame, wherein the measurement result is used for determining the optimal sending beam for the access point to send data to the station.

Step S802 in the embodiment of the present invention please refer to step S602 in the embodiment of fig. 6, which is not described herein again.

Referring to fig. 9, which is a schematic structural diagram of a beam adjustment apparatus according to an embodiment of the present invention, the beam adjustment apparatus of the present embodiment is applied to an access point; as shown in the figure, the beam adjusting apparatus includes:

a transceiver module 100, configured to transmit a BRP frame, where the BRP frame is followed by a plurality of transmission training fields transmitted in different transmission beams, so that a plurality of stations receiving the BRP frame receive and measure received signal qualities of the transmission training fields transmitted in the different transmission beams;

in this embodiment of the present invention, the transceiver module 100 of the PCP/AP may send a BRP frame to a plurality of STAs, where the BRP frame is identified as training for adjusting a transmission beam, and the BRP frame is followed by a plurality of TRN-T fields, where a TRN-T field is a very long sequence for training a beam, and one TRN-T field corresponds to one sequence. The PCP/AP appends the same number of TRN-T fields after the BRP frame, depending on the number of transmit beams to be trained. Each TRN-T field is transmitted with a different transmit beam to be trained, which is typically selected based on the antenna training results of the SLS phase.

Optionally, the sending, by the transceiver module 100, the BRP frame specifically includes:

the transceiving module 100 broadcasts a BRP frame to a target sector, the target sector including a plurality of stations, the BRP frame including a broadcast MAC address.

In this embodiment of the present invention, the transceiver module 100 of the PCP/AP may broadcast the BRP frame to the target sector in a broadcast manner, where the target sector includes a plurality of STAs, and a destination address of the BRP frame is a broadcast Media Access Control (MAC) address, so that all STAs in the target sector may receive the BRP frame. The BRP frame is marked as training for adjusting the transmission beam, a plurality of TRN-T domains transmitted by different transmission beams are attached to the BRP frame, the number of the TRN-T domains corresponds to the number of the transmission beams needing training one by one, namely, one TRN-T domain is transmitted by one transmission beam. The transmit beam to be trained is selected based on the antenna training results of the SLS phase.

the transceiver module 100 multicasts a BRP frame, where the BRP frame carries a group identifier, and the group identifier is used to identify a plurality of stations that receive the BRP frame.

In this embodiment of the present invention, the transceiver module 100 of the PCP/AP may send a BRP frame in a multicast form, where the BRP frame carries a Group identifier, where the Group identifier is used to identify multiple stations that receive the BRP frame, and for example, the Group identifier may be a multicast MAC address or a Group identifier (Group ID). The BRP frame is marked as training for adjusting the transmission beam, a plurality of TRN-T domains transmitted by different transmission beams are attached to the BRP frame, the number of the TRN-T domains corresponds to the number of the transmission beams needing training one by one, namely, one TRN-T domain is transmitted by one transmission beam. The transmit beam to be trained is selected based on the antenna training results of the SLS phase.

The transceiver module 100 is further configured to send a polling frame to each of the plurality of stations, where the polling frame is used to obtain a measurement result of the station on the quality of the received signal;

in the embodiment of the invention, each STA in a plurality of STAs waits for the polling of the PCP/AP after measuring the quality of the received signal of the TRN-T domain transmitted by different transmission beams. The PCP/AP transceiver module 100 sequentially transmits a polling frame to each of a plurality of stations that receive the BRP frame. Optionally, the PCP/AP sends the polling frame in a manner that after the PCP/AP sends the polling frame to a certain STA, the PCP/AP waits for a certain period of time, and if the PCP/AP receives the BRP frame replied by the STA in the certain period, the PCP/AP immediately sends the polling frame to the next STA. If the PCP/AP does not receive the BRP frame replied by the STA in the period, the PCP/AP sends a polling frame to the next STA after the period is over.

Optionally, the transceiver module 100 is further configured to obtain, through a sector-level scanning phase, a site identifier of each of the multiple sites in the target sector;

in the embodiment of the present invention, the target sector may be a certain sector of the directional antenna or several adjacent sectors of the directional antenna. When performing beamforming training with an STA in a target sector during an SLS phase, the PCP/AP transceiver module 100 may obtain station information of each station in multiple stations in the target sector, where the station information may be a station identifier of the station.

The sending, by the transceiver module 100, the polling frame to each of the plurality of stations specifically includes:

the transceiver module 100 sends a polling frame to the station identified by the station identifier according to the station identifier of each station in the plurality of stations.

In the embodiment of the present invention, since the PCP/AP broadcasts and transmits the BRP frame to the target sector, all STAs in the target sector can receive the BRP frame, and the subsequent PCP/AP transceiver module 100 needs to transmit the polling frames to the STAs in the target sector one by one, and since the PCP/AP can acquire the station identifier of the STA in each sector in the antenna training result in the SLS stage, the PCP/AP can sequentially transmit the polling frames to the STA identified by each acquired station identifier in the beam adjustment step. Optionally, a specific manner of sending the polling frame may be that the PCP/AP waits for a certain period of time after sending the polling frame to a certain STA. If the PCP/AP receives the BRP frame replied by the STA in the period, the PCP/AP immediately sends a polling frame to the next STA. If the PCP/AP does not receive the BRP frame replied by the STA in the period, the PCP/AP sends a polling frame to the next STA after the period is over.

Optionally, the sending, by the transceiver module 100, a polling frame to each of the plurality of stations specifically includes:

In the embodiment of the present invention, the PCP/AP transceiver module 100 sends a polling frame to the STA identified by the group identifier carried in the BRP frame, and usually, a plurality of STAs have the same group identifier. Optionally, a specific manner of sending the polling frame may be that the PCP/AP waits for a certain period of time after sending the polling frame to a certain STA. If the PCP/AP receives the BRP frame replied by the STA in the period, the PCP/AP immediately sends a polling frame to the next STA. If the PCP/AP does not receive the BRP frame replied by the STA in the period, the PCP/AP sends a polling frame to the next STA after the period is over.

A processing module 101, configured to obtain, according to the measurement result returned by each station, a target transmission beam corresponding to a target transmission training field with the best received signal quality of the station, and determine the target transmission beam as an optimal transmission beam for the access point to transmit data to the station.

No matter what form the measurement result exists, the PCP/AP processing module 101 obtains, according to the measurement result returned by each STA, a target transmission beam corresponding to a target TRN-T domain with the best received signal quality of the station, where the target transmission beam corresponding to the target TRN-T domain is the target transmission beam used to transmit the target TRN-T domain when the PCP/AP transmits a BRP frame. And the PCP/AP determines the target transmission beam as an optimal transmission beam for the PCP/AP to transmit data to the STA. It should be noted that, if the optimal transmission beam is not found, the PCP/AP transmits multiple TRN-T fields using other transmission beams, and repeats the above process.

Referring to fig. 10, a schematic structural diagram of another beam adjustment apparatus according to an embodiment of the present invention is shown. In the embodiment of fig. 10, access point 20 includes an antenna 200, a transmitter 201, a receiver 202, a processor 203, and a memory 204. Processor 203 controls the operation of access point 20 and may be used to process signals. Memory 204 may include both read-only memory and random access memory and provides instructions and data to processor 203. The transmitter 201 and receiver 202 may be coupled to an antenna 200, with the various components of the access point 20 coupled together by a bus system 205, wherein the bus system 205 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled in the figure as bus system 205.

Specifically, memory 204 may store instructions that perform the following process:

Optionally, the PCP/AP may send a BRP frame to the multiple STAs, where the BRP frame is identified as training for adjusting the transmission beam, and the BRP frame is followed by multiple TRN-T fields, where a TRN-T field is a very long sequence used for beam training, and one TRN-T field corresponds to one sequence. The PCP/AP appends the same number of TRN-T fields after the BRP frame, depending on the number of transmit beams to be trained. Each TRN-T field is transmitted with a different transmit beam to be trained, which is typically selected based on the antenna training results of the SLS phase.

Optionally, each STA of the plurality of STAs waits for polling of the PCP/AP after measuring the received signal quality of the TRN-T field receiving the transmission of the different transmission beam. The PCP/AP sequentially transmits a polling frame to each of a plurality of stations that receive the BRP frame. Optionally, the PCP/AP sends the polling frame in a manner that after the PCP/AP sends the polling frame to a certain STA, the PCP/AP waits for a certain period of time, and if the PCP/AP receives the BRP frame replied by the STA in the certain period, the PCP/AP immediately sends the polling frame to the next STA. If the PCP/AP does not receive the BRP frame replied by the STA in the period, the PCP/AP sends a polling frame to the next STA after the period is over.

Optionally, after receiving the polling frame sent by the PCP/AP, the STA replies a BRP frame, where the BRP frame carries the measurement result, and for example, if the measurement result is the target TRN-T domain with the best received signal quality, the target TRN-T domain is identified in the BRP frame.

Further, the access point sending a BRP frame, including:

Optionally, the PCP/AP may broadcast the BRP frame to the target sector in a broadcast manner, where the target sector includes a plurality of STAs, and a destination address of the BRP frame is a broadcast Media Access Control (MAC) address, so that all STAs in the target sector may receive the BRP frame. The BRP frame is marked as training for adjusting the transmission beam, a plurality of TRN-T domains transmitted by different transmission beams are attached to the BRP frame, the number of the TRN-T domains corresponds to the number of the transmission beams needing training one by one, namely, one TRN-T domain is transmitted by one transmission beam. The transmit beam to be trained is selected based on the antenna training results of the SLS phase.

Based on the above embodiment, before the access point broadcasts the BRP frame to the target sector, the method further includes:

optionally, the sending, by the access point, a polling frame to each of the plurality of stations includes:

Alternatively, the target sector may be a certain sector of the directional antenna or several adjacent sectors of the directional antenna. When performing beamforming training with an STA in a target sector in an SLS stage, a PCP/AP may obtain station information of each station in multiple stations in the target sector, where the station information may be a station identifier of the station.

Optionally, because the PCP/AP broadcasts and sends the BRP frame to the target sector, all STAs in the target sector may receive the BRP frame, and a subsequent PCP/AP needs to send polling frames to the STAs in the target sector one by one, and because the PCP/AP may learn the station identifier of the STA in each sector in the antenna training result in the SLS phase, the PCP/AP may send the polling frame to the STA identified by each learned station identifier in sequence in the beam adjustment step. Optionally, a specific manner of sending the polling frame may be that the PCP/AP waits for a certain period of time after sending the polling frame to a certain STA. If the PCP/AP receives the BRP frame replied by the STA in the period, the PCP/AP immediately sends a polling frame to the next STA. If the PCP/AP does not receive the BRP frame replied by the STA in the period, the PCP/AP sends a polling frame to the next STA after the period is over.

Further, as another embodiment, the sending, by the access point, a BRP frame includes:

Optionally, the PCP/AP may send a BRP frame in a multicast form, where the BRP frame carries a group identifier, where the group identifier is used to identify multiple stations that receive the BRP frame, and for example, the group identifier may be a multicast MAC address or a group identifier (GroupID). The BRP frame is marked as training for adjusting the transmission beam, a plurality of TRN-T domains transmitted by different transmission beams are attached to the BRP frame, the number of the TRN-T domains corresponds to the number of the transmission beams needing training one by one, namely, one TRN-T domain is transmitted by one transmission beam. The transmit beam to be trained is selected based on the antenna training results of the SLS phase.

Based on the above embodiment, the sending, by the access point, a polling frame to each of the plurality of stations includes:

Optionally, the PCP/AP sends a polling frame to the STA identified by the group identifier carried in the BRP frame, and usually, a plurality of STAs have the same group identifier. Optionally, a specific manner of sending the polling frame may be that the PCP/AP waits for a certain period of time after sending the polling frame to a certain STA. If the PCP/AP receives the BRP frame replied by the STA in the period, the PCP/AP immediately sends a polling frame to the next STA. If the PCP/AP does not receive the BRP frame replied by the STA in the period, the PCP/AP sends a polling frame to the next STA after the period is over.

Referring to fig. 11, a schematic structural diagram of another beam adjustment apparatus according to an embodiment of the present invention is shown, in which the beam adjustment apparatus of the present embodiment is applied to a station; as shown in the figure, the beam adjusting apparatus includes:

a transceiver module 300, configured to receive a BRP frame sent by an access point, where the BRP frame is followed by multiple transmission training fields sent in different transmission beams;

A processing module 301, configured to receive and measure received signal qualities of the transmission training fields sent by the different transmission beams according to the BRP frame, and generate a measurement result according to the received signal qualities;

in this embodiment of the present invention, after receiving the BRP frame, the STA determines and analyzes the BRP frame by using the processing module 301, and optionally, the determination mode needs to be determined according to a mode in which the PCP/AP sends the BRP frame, for example, if the PCP/AP sends the BRP frame in a multicast mode, the STA needs to match its own group identifier with the group identifier in the BRP frame, and if the matching is consistent, the STA continues to receive and measure the received signal quality of the TRN-T fields attached to the BRP frame.

Optionally, if the access point broadcasts and sends the BRP frame to a first target sector, and the BRP frame includes a first identifier of the first target sector;

the transceiver module 300 is further configured to obtain a second target sector to which the site belongs through a sector-level scanning stage, and store a second identifier of the second target sector;

in the embodiment of the present invention, when performing beamforming training between the PCP/AP and the STA, the STA transceiver module 300 may obtain a second target sector to which the STA belongs through an SLS phase of the beamforming training, and the STA stores a second identifier of the second target sector. It should be noted that the second identifier may be composed of a transmit Antenna identifier (TX Antenna ID) and a transmit Sector identifier (TX Sector ID) corresponding to the STA.

the processing module 301 matches the first identifier and the second identifier in the BRP frame, and if the first identifier and the second identifier are consistent with each other, receives and measures the quality of the received signal in the transmission training fields transmitted by the different transmission beams.

In the embodiment of the invention, when the PCP/AP broadcasts and sends the BRP frame in the first target sector in a broadcasting mode, the BRP frame comprises a first identifier of the first target sector; the first identifier may also be composed of a transmit Antenna identifier (TX Antenna ID) and a transmit Sector identifier (TX Sector ID). As a general rule, if a PCP/AP broadcasts and transmits a BRP frame in a first target sector, only STAs in the first target sector may receive the BRP frame, but there may be an exception, for example, if a certain STA is located at an edge of the first target sector but does not belong to the first target sector, the STA may also receive the BRP frame, so in order to ensure that the PCP/AP performs transmit beam training on the STAs in the first target sector, the processing module 301 needs to match a first identifier in the BRP frame with a second identifier of the STA itself, and if the first identifier matches the second identifier, the processing module receives and measures the quality of a received signal in a TRN-T field transmitted by different transmit beams, and generates a measurement result according to the quality of the received signal.

Optionally, if the access point multicasts the BRP frame, and the BRP frame includes a first group identifier to which a station receiving the BRP frame belongs;

the processing module 301 receives and measures the received signal quality of the transmission training fields transmitted by the different transmission beams according to the BRP frame;

the processing module 301 matches the second group identifier with the first group identifier in the BRP frame, and receives and measures the received signal quality of the transmission training fields transmitted by the different transmission beams if the matching is consistent.

After receiving the BRP frame, the STA processing module 301 matches the second group identifier with the first group identifier in the BRP frame, and if the second group identifier matches the first group identifier in the BRP frame, continues to receive and measure the received signal quality of the multiple TRN-T fields appended to the BRP frame, and generates a measurement result according to the received signal quality. It should be noted that the measurement result may exist in various forms, and is not limited herein. For example, the received signal qualities of different TRN-T domains measured by the STA may be sorted in order from good to bad, and the TRN-T domains sorted in the top preset number are selected as the measurement results; or the target TRN-T field with the best received signal quality or the identification target of the TRN-T field among the received signal qualities of different TRN-T fields measured by the STA may be used as the measurement result.

The transceiver module 300 is further configured to receive a polling frame sent by the access point, and return the measurement result to the access point according to the polling frame, where the measurement result is used to determine an optimal transmission beam for the access point to transmit data to the station.

In the embodiment of the present invention, in order to obtain the measurement result of each STA, the PCP/AP sequentially sends polling frames to each STA, and after receiving the polling frame sent by the PCP/AP, the STA returns the measurement result to the PCP/AP according to the polling frame, where the measurement result is used for the PCP/AP to determine an optimal transmission beam for sending data to the STA, and the optimal transmission beam can enable the STA to achieve optimal received signal quality when receiving the data sent by the PCP/AP.

Referring to fig. 12, a schematic structural diagram of another beam adjustment apparatus according to an embodiment of the present invention is shown. In the embodiment of fig. 12, the station 40 includes an antenna 400, a transmitter 401, a receiver 402, a processor 403, and a memory 404. Processor 403 controls the operation of access point 40 and may be used to process signals. Memory 404 may include both read-only memory and random-access memory and provides instructions and data to processor 403. The transmitter 401 and receiver 402 may be coupled to an antenna 400, with the various components of the station 40 being coupled together by a bus system 405, wherein the bus system 405 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled in the figure as the bus system 405.

In particular, memory 404 may store instructions that perform the following process:

Optionally, if the PCP/AP broadcasts and sends a BRP frame to the target sector in a broadcast manner, the STA in the target sector may receive the BRP frame; if the PCP/AP sends the BRP frame in a multicast format, the STA whose group identifier matches the group identifier in the BRP frame may receive the BRP frame. The BRP frame is marked as training for adjusting the transmission beam, a plurality of TRN-T domains transmitted by different transmission beams are attached to the BRP frame, the number of the TRN-T domains corresponds to the number of the transmission beams needing training one by one, namely, one TRN-T domain is transmitted by one transmission beam. The transmit beam to be trained is selected based on the antenna training results of the SLS phase.

Optionally, after receiving the BRP frame, the STA performs judgment and analysis on the BRP frame to determine whether to continue receiving and measuring the received signal quality of the multiple TRN-T domains attached to the BRP frame, and optionally, the determination method needs to be determined according to the method for the PCP/AP to send the BRP frame, for example, if the PCP/AP sends the BRP frame in a multicast form, the STA needs to match its own group identifier with the group identifier in the BRP frame, and if the matching is consistent, continues receiving and measuring the received signal quality of the multiple TRN-T domains attached to the BRP frame.

Optionally, in order to obtain the measurement result of each STA, the PCP/AP sequentially sends polling frames to each STA, and after receiving the polling frame sent by the PCP/AP, the STA returns the measurement result to the PCP/AP according to the polling frame, where the measurement result is used for the PCP/AP to determine an optimal transmission beam for sending data to the STA, and the optimal transmission beam may enable the STA to achieve optimal received signal quality when receiving the data sent by the PCP/AP.

Further, as an optional implementation manner, if the access point broadcasts and sends the BRP frame to a first target sector, and the BRP frame includes a first identifier of the first target sector;

optionally, when performing beamforming training between the PCP/AP and the STA, the STA may obtain the second target sector to which the STA belongs through an SLS phase of the beamforming training, and store the second identifier of the second target sector by the STA. It should be noted that the second identifier may be composed of a transmit Antenna identifier (TX Antenna ID) and a transmit sector identifier (TXSector ID) corresponding to the STA.

Optionally, when the PCP/AP broadcasts and transmits a BRP frame in a first target sector in a broadcast manner, the BRP frame includes a first identifier of the first target sector; the first identifier may also be composed of a transmit Antenna identifier (TX Antenna ID) and a transmit Sector identifier (TX Sector ID). As a general rule, if a PCP/AP broadcasts and transmits a BRP frame in a first target sector, only STAs in the first target sector may receive the BRP frame, but there may be an exception, for example, if a certain STA is in an edge portion of the first target sector but does not belong to the first target sector, the certain STA may also receive the BRP frame, so to ensure that the PCP/AP performs transmit beam training on the STAs in the first target sector, it is necessary to match a first identifier in the BRP frame with a second identifier of the STA itself, and if the first identifier matches the second identifier, the PCP/AP receives and measures the quality of a received signal in a TRN-T field transmitted by different transmit beams, and generates a measurement result according to the quality of the received signal.

Further, as another optional implementation manner, if the access point multicasts the BRP frame, and the BRP frame includes a first group identifier to which a station receiving the BRP frame belongs;

Optionally, when the PCP/AP sends the BRP frame in a multicast form, the BRP frame carries a first group identifier, where the first group identifier is used to identify an STA that receives the BRP frame, and the group identifiers of multiple STAs are generally the same, so that when the BRP frame is sent in a sampling multicast form, multiple STAs may receive the BRP frame. The group identification may be a multicast MAC address. The training for transmit beam adjustment is identified in the BRP frame and a plurality of TRN-T fields are appended behind the BRP frame.

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.

Claims

1. A method for beam adjustment, comprising:

an access point transmits a beam adjustment protocol (BRP) frame in a first target sector, wherein the BRP frame comprises a first identifier of the first target sector, and is accompanied by a plurality of transmission training domains transmitted by different transmission beams, so that a plurality of stations receiving the BRP frame receive and measure the received signal quality of the transmission training domains transmitted by the different transmission beams when the first identifier is matched with a second identifier of a second target sector to which the stations belong;

the access point sends a polling frame to each site in the multiple sites, wherein the polling frame is used for obtaining the measurement result of the site on the quality of the received signal, and the access point obtains the site identification of each site in the multiple sites in the first target sector when carrying out beam forming training with the multiple sites in the first target sector in an SLS stage;

2. The method of claim 1, wherein the measurement result comprises a target transmission training field corresponding to an optimal received signal quality among the received signal qualities measured by the station.

3. The method of claim 1, wherein the access point broadcasting a transmit beam adjustment protocol (BRP) frame in a first target sector, comprising:

the access point broadcasts a BRP frame to a first target sector, the first target sector including a plurality of stations, the BRP frame including a broadcast MAC address.

4. The method of claim 3, wherein the access point, prior to broadcasting a transmission beam adjustment protocol (BRP) frame in the first target sector, further comprises:

the access point obtains a site identifier of each site in the plurality of sites in a first target sector through a sector-level scanning stage;

5. The method of claim 1, wherein the access point broadcasting a transmit beam adjustment protocol (BRP) frame in a first target sector, comprising:

the access point multicasts a BRP frame in a first target sector, wherein the BRP frame carries a group identifier, and the group identifier is used for identifying a plurality of stations for receiving the BRP frame.

6. The method of claim 5, wherein the access point transmitting a polling frame to each of the plurality of stations comprises:

7. A method for beam adjustment, comprising:

a station receives a BRP frame sent by an access point, wherein the BRP frame comprises a first identifier of a first target sector, and the BRP frame is accompanied by a plurality of sending training domains sent by different sending beams;

the station matches the first identifier in the BRP frame with a second identifier of a second target sector to which the station belongs, receives and measures the received signal quality of the transmission training fields transmitted by different transmission beams if the first identifier in the BRP frame is matched with the second identifier of the second target sector to which the station belongs, and generates a measurement result according to the received signal quality;

the station receives a polling frame sent by the access point, and returns the measurement result to the access point according to the polling frame, wherein the measurement result is used for determining an optimal transmission beam for the access point to send data to the station, the station is one of a plurality of stations in the first target sector, and the access point obtains a station identifier of each station in the plurality of stations in the first target sector when performing beamforming training with the plurality of stations in the first target sector in an SLS stage.

8. The method of claim 7, wherein the measurement result comprises a target transmission training field corresponding to an optimal received signal quality among the received signal qualities measured by the station.

9. The method of claim 7, wherein prior to the station receiving the BRP frame sent by the access point, further comprising:

and the site obtains a second target sector to which the site belongs through a sector-level scanning stage, and stores a second identifier of the second target sector.

10. A beam adjusting apparatus applied to an access point, comprising:

a transceiver module, configured to transmit a beam adjustment protocol BRP frame in a first target sector, where the BRP frame includes a first identifier of the first target sector, and the BRP frame is followed by multiple transmission training fields transmitted on different transmission beams, so that a plurality of stations receiving the BRP frame receive and measure received signal qualities of the transmission training fields transmitted on the different transmission beams when the first identifier matches a second identifier of a second target sector to which the station belongs;

the transceiver module is further configured to send a polling frame to each of the plurality of stations, where the polling frame is used to obtain a measurement result of the station on the quality of a received signal, and the access point obtains a station identifier of each of the plurality of stations in the first target sector when performing beamforming training with the plurality of stations in the first target sector in an SLS phase;

11. The apparatus of claim 10, wherein the measurement result comprises a target transmission training field corresponding to an optimal received signal quality among the received signal qualities measured by the station.

12. The apparatus as claimed in claim 10, wherein said transceiver module transmitting the BRP frame specifically comprises:

the transceiver module broadcasts a BRP frame to a first target sector, the first target sector including a plurality of sites, the BRP frame including a broadcast MAC address.

13. The apparatus as claimed in claim 12, wherein said transceiver module is further configured to obtain a station identity for each of said plurality of stations in a first target sector through a sector-level scanning phase;

14. A beam adjusting apparatus applied to a station, comprising:

a transceiving module, configured to receive a BRP frame sent by an access point, where the BRP frame includes a first identifier of a first target sector, and the BRP frame is followed by multiple transmission training fields sent in different transmission beams;

the processing module is used for matching the first identifier in the BRP frame with a second identifier of a second target sector to which the site belongs, receiving and measuring the received signal quality of the transmission training domain transmitted by different transmission beams if the first identifier in the BRP frame is matched with the second identifier in the second target sector to which the site belongs, and generating a measurement result according to the received signal quality;

the transceiver module is further configured to receive a polling frame sent by the access point, and return the measurement result to the access point according to the polling frame, where the measurement result is used to determine an optimal transmission beam for the access point to send data to the station, where the station is one of multiple stations in the first target sector, and the access point obtains a station identifier of each station in the multiple stations in the first target sector when performing beamforming training with the multiple stations in the first target sector in an SLS phase.

15. The apparatus of claim 14, wherein the measurement result comprises a target transmission training field corresponding to an optimal received signal quality among the received signal qualities measured by the station.

16. The apparatus as claimed in claim 14, wherein the transceiver module is further configured to obtain a second target sector to which the station belongs through a sector-level scanning phase, and to store a second identifier of the second target sector.