WO2016206007A1 - 一种波束调整方法及装置 - Google Patents

一种波束调整方法及装置 Download PDF

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Publication number
WO2016206007A1
WO2016206007A1 PCT/CN2015/082140 CN2015082140W WO2016206007A1 WO 2016206007 A1 WO2016206007 A1 WO 2016206007A1 CN 2015082140 W CN2015082140 W CN 2015082140W WO 2016206007 A1 WO2016206007 A1 WO 2016206007A1
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Prior art keywords
brp frame
frame
station
access point
signal quality
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PCT/CN2015/082140
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English (en)
French (fr)
Inventor
赵牧
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2015/082140 priority Critical patent/WO2016206007A1/zh
Priority to CN201580080410.4A priority patent/CN107637155B/zh
Publication of WO2016206007A1 publication Critical patent/WO2016206007A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria

Definitions

  • the present invention relates to the field of wireless network technologies, and in particular, to a beam adjustment method and apparatus.
  • IEEE 802.11ad is a technical protocol for standardizing Wireless Local Area Network (WLAN) devices operating in the 60 GHz band.
  • Networks that use the 802.11ad protocol for communication are often referred to as Directional Multi Gigabit (DMG) networks.
  • DMG Directional Multi Gigabit
  • a DMG network usually consists of one access point and multiple sites.
  • the access points in the DMG network usually use directional antennas to transmit data to each station due to the frequency band characteristics.
  • the directional antenna is different from the traditional omnidirectional antenna, and the directional antenna usually For a certain site, there is an optimal transmit beam with the best received signal quality.
  • the selection of the optimal transmit beam between the access point and the site is usually selected by beamforming training (BF training).
  • BF training process is divided into two phases.
  • the first phase is sector-level scanning (sector-level). Sweep, SLS), the second phase is the Beam Refinement Protocol (BRP).
  • the SLS phase generally adjusts the access point and the site.
  • the BRP phase performs the SLS based on the access point and the site. Precise training and adjustment.
  • the Beam Refinement Transaction (BRT) of the BRP phase is used to adjust the transmit beam and/or the receive beam between the access point and the station.
  • the access point unicasts the BRP frame to a station, and the BRP frame is followed by multiple Transmit training (TRN-T) domains, and each TRN-T domain is sent with a different transmit beam;
  • TRN-T Transmit training
  • the station receives the BRP frame and multiple TRN-T fields attached thereto, and measures its channel parameters.
  • the station replies to the BRP frame to the access point and identifies the TRN with the best received signal quality in the BRP frame. T domain;
  • the access point determines its optimal transmit beam for the site based on the reply from the site.
  • an access point when it adjusts its own transmit beam, it can only give one site a unicast BRP frame and a TRN-T field sent by multiple different transmit beams attached to the BRP frame at a time; one transmission Only the transmission beam of the access point for one site can be adjusted. Since the TRN-T domain is a very long sequence and the transmission takes a long time, the transmission beam adjustment mode of the access point in the prior art is extremely inefficient.
  • the embodiment of the invention provides a beam adjustment method and device, which can adjust the optimal transmission beam of an access point to multiple sites by transmitting a BRP frame once, and the adjustment efficiency is high.
  • a first aspect of the present invention provides a beam adjustment method, including:
  • the access point sends a BRP frame, and the BRP frame is followed by a plurality of sending training fields that are sent by different transmitting beams, so that multiple stations that receive the BRP frame receive and measure the sending training fields sent by the different transmitting beams.
  • Receive signal quality
  • the access point sends a polling frame to each of the plurality of stations, where the polling frame is used to obtain a measurement result of the received signal quality of the station;
  • the measurement result includes a target transmission training field corresponding to an optimal received signal quality of the received signal quality measured by the station.
  • the access point sends a BRP frame, including:
  • 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.
  • the method before the access point broadcasts the BRP frame to the target sector, the method further includes:
  • the access point obtains a site identifier of each of the plurality of sites in the target sector by a sector level scanning phase
  • the access point sends a polling frame to each of the plurality of sites, including:
  • the access point sends a polling frame to the identified station according to the site identifier of each of the multiple sites.
  • the access point sends a BRP frame, including:
  • the access point multicasts a BRP frame, and the BRP frame carries a group identifier, where the group identifier is used to identify multiple sites that receive the BRP frame.
  • the access point sends a polling frame to each of the multiple sites, including:
  • the access point sends a polling frame to the station identified by the group identifier carried in the BRP frame.
  • a second aspect of the present invention provides a beam adjustment method, including:
  • the station receives a BRP frame sent by the access point, and the BRP frame is followed by a plurality of sending training fields sent by different transmitting beams;
  • the measurement result includes a target transmission training field corresponding to an optimal received signal quality of the received signal quality measured by the station.
  • the access point broadcasts the BRP frame to a first target sector, and the BRP frame includes the first target fan The first identifier of the district;
  • the station Before receiving the BRP frame sent by the access point, the station further includes:
  • the station receives and measures the received signal quality of the sending training domain that is sent by using the different transmit beams, including:
  • the station matches the first identifier in the BRP frame with the second identifier, and if the matching is consistent, receiving and measuring the received signal quality of the sending training domain sent by the different sending beams.
  • the access point multicasts the BRP frame
  • the BRP frame includes a first group identifier of a station that receives the BRP frame ;
  • the station matches its own second group identifier with the first group identifier in the BRP frame. If the matching is consistent, the station receives and measures the received signal quality of the sending training domain sent by the different transmitting beams.
  • a third aspect of the present invention provides a beam adjusting apparatus, which is applied to an access point, and includes:
  • a transceiver module configured to send a BRP frame, where the BRP frame is followed by a plurality of sending training fields sent by different transmitting beams, so that multiple stations receiving the BRP frame receive and measure the sending training of the different transmitting beam transmissions.
  • the received signal quality of the domain
  • the transceiver module is further configured to send a polling frame to each of the multiple sites, where the polling frame is used to obtain a measurement result of the received signal quality of the station;
  • a processing module configured to obtain, according to the measurement result returned by each station, a target transmit beam corresponding to a target transmit training domain with the best received signal quality of the station, and determine the target transmit beam as the access The point at which the point sends the optimal transmit beam of data to the station.
  • the measurement result includes a target transmission training field corresponding to an optimal received signal quality of the received signal quality measured by the station.
  • the sending, by the transceiver module, the BRP frame includes:
  • the transceiver module broadcasts a BRP frame to a target sector, the target sector includes a plurality of stations, and the BRP frame includes a broadcast MAC address.
  • the transceiver module is further configured to obtain the multiple in the target sector by using a sector level scanning stage The site ID of each site in the site;
  • the sending, by the transceiver module, the sending of the polling frame to each of the multiple sites includes:
  • the transceiver module sends a polling frame to the identified station according to the site identifier of each of the multiple sites.
  • the sending, by the transceiver module, the BRP frame includes:
  • the transceiver module multicasts a BRP frame, and the BRP frame carries a group identifier, where the group identifier is used to identify multiple sites that receive the BRP frame.
  • the sending, by the transceiver module, the sending the polling frame to each of the multiple sites includes:
  • 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, which is applied to a station, and includes:
  • a transceiver module configured to receive a BRP frame sent by the access point, where the BRP frame is followed by a plurality of sending training domains that are sent by using different transmit beams;
  • a processing module configured to receive and measure a received signal quality of the transmit training domain sent by the different transmit beams according to the BRP frame, and generate 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 the access point An optimal transmit beam that transmits data to the station.
  • the measurement result includes a target transmission training field corresponding to an optimal received signal quality of the received signal quality measured by the station.
  • the access point broadcasts the BRP frame to a first target sector, and the BRP frame includes the first target fan The first identifier of the district;
  • the transceiver module is further configured to obtain a second target sector to which the station belongs by using a sector-level scanning stage, and save a second identifier of the second target sector;
  • the processing module receives, according to the BRP frame, the received signal quality of the transmission training domain that is sent by using the different transmit beams, and includes:
  • the processing module matches the first identifier in the BRP frame with the second identifier, and if the matching is consistent, receiving and measuring the received signal quality of the sending training domain sent by the different sending beams.
  • the access point multicasts the BRP frame, and the BRP frame includes a first group identifier of a station that receives the BRP frame ;
  • the processing module receives and measures the received signal quality of the sending training domain sent by the different transmit beams, and specifically includes:
  • the processing module matches the second group identifier of the second group with the first group identifier in the BRP frame. If the matching is consistent, the received signal quality of the sending training domain sent by the different sending beams is received and measured.
  • the access point sends a BRP frame, and the BRP frame is followed by a plurality of sending training fields that are sent by different transmitting beams, and multiple stations that receive the BRP frame receive and measure multiple BSR frames.
  • the received signal quality of the transmission training field sent by the transmitting beam the access point sends a polling frame to each of the multiple sites, and the polling frame is used to obtain the measurement result of the received signal quality of the station, and the access point is according to each
  • the measurement result returned by the station obtains the target transmission beam corresponding to the target transmission training domain with the best received signal quality of the station, and determines the target transmission beam as the access point to the site.
  • the optimal transmit beam for transmitting data In this way, the optimal transmit beam of the access point for multiple sites can be adjusted by sending a BRP frame once, and the adjustment efficiency is high.
  • FIG. 1 is a schematic diagram of a system for deploying a WLAN according to an embodiment of the present disclosure
  • FIG. 2 is a schematic flowchart of a beam adjustment method according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart diagram of another beam adjustment method according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic flowchart diagram of still another beam adjustment method according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic diagram of interaction between an access point and a site according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart diagram of still another beam adjustment method according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic flowchart diagram of still another beam adjustment method according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic flowchart diagram of still another beam adjustment method according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a beam adjusting apparatus applied to an access point according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of another beam adjusting apparatus applied to an access point according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of a beam adjusting apparatus applied to a station according to an embodiment of the present disclosure
  • FIG. 12 is a schematic structural diagram of another beam adjusting apparatus applied to a station according to an embodiment of the present invention.
  • a schematic diagram of a typical WLAN deployment scenario includes an access point and a plurality of STAs in the network, and the access points communicate with the stations STA1, STA2, and STA3, respectively.
  • the access site may be a personal basic service set (BSS) control point (PCP) or an access point (AP), and the PCP coordinates other terminal sites to access the wireless medium in the PBSS.
  • BSS personal basic service set
  • PCP control point
  • AP access point
  • the AP provides access services to terminal sites in the WLAN, as well as management and coordination of terminal sites.
  • the PCP/AP typically uses directional antennas to transmit data to STA1, STA2, and STA3.
  • the use of directional antennas requires finding the optimal transmit beam for transmitting data to STA1, STA2, and STA3, respectively, so that the received signal quality of the station is the best.
  • the access point is the optimal transmit beam that is used to send data to each station through BF training.
  • the two sites performing BF training act as initiators and responders, respectively.
  • the PCP/AP In the BF training process between the PCP/AP and the STA of the DMG network, the PCP/AP generally acts as the initiator, and the STA generally acts as the responder.
  • the BF training process is divided into two phases.
  • the first phase is SLS, and the second phase is BRP.
  • the BRP phase includes a beam adjustment step, which is used to adjust the transmit beam and/or receive beam of the PCP/AP and/or STA.
  • the PCP/AP when the transmit beam of the PCP/AP is used to obtain an optimal transmit beam for the PCP/AP to send data to the STA, the PCP/AP sends a BRP frame in a broadcast or multicast manner, and the BRP frame is sent.
  • a plurality of TRN-T domains transmitted by different transmit beams are attached, and each of the plurality of stations receiving the BRP frame sequentially measures the received signal quality of the TRN-T domain transmitted by the different transmit beams, as shown in FIG. 1 .
  • STA1, STA2, and STA3 receive the BRP frame, each station receives and measures the received signal quality of the TRN-T domain after receiving the BRP frame, and the target TRN with the best received signal quality.
  • T domain returns to The PCP/AP and the PCP/AP determine the transmit beam corresponding to the target TRN-T domain as the optimal transmit beam for transmitting data to the station. It should be noted that the target TRN returned by each station in STA1, STA2, and STA3. The -T domain may be different, so the optimal transmit beam for each site may be different. In this beam adjustment mode, the PCP/AP can transmit the BRP frame once to adjust the transmit beams of multiple sites, so the adjustment efficiency is high.
  • FIG. 2 is a schematic flowchart of a beam adjustment method according to an embodiment of the present invention. As shown in the figure, the beam adjustment method in this embodiment includes steps S200-S202.
  • the access point sends a BRP frame, and the BRP frame is followed by a plurality of sending training fields sent by different transmitting beams, so that multiple stations receiving the BRP frame receive and measure the sending training of the different transmitting beam transmissions.
  • the received signal quality of the domain
  • the PCP/AP may send a BRP frame to multiple STAs, and identify the training for performing transmission beam adjustment in the BRP frame.
  • the BRP frame is followed by multiple TRN-T domains, and the TRN-T domain is very A sequence long used for beam training, one TRN-T domain corresponds to one sequence.
  • the PCP/AP adds the same number of TRN-T fields behind the BRP frame according to the number of transmit beams to be trained. Each TRN-T domain is transmitted with different transmit beams to be trained, and these beams are generally selected based on the antenna training results of the SLS phase.
  • Each of the plurality of STAs receiving the BRP frame continues to receive a plurality of TRN-T fields appended to the BRP frame and measures its channel parameters, since the plurality of TRN-T domains appended to the BRP frame are different.
  • the transmit beam is transmitted, and the relative positions between the STAs and the PCP/AP are different. Therefore, each STA measures the received signal quality differently when receiving the same TRN-T field.
  • the access point sends a polling frame to each of the multiple sites, where the polling frame is used to obtain a measurement result of the received signal quality of the station.
  • each of the plurality of STAs waits for the polling of the PCP/AP after measuring the received signal quality of the TRN-T domain transmitted by the different transmit beams.
  • the PCP/AP sequentially transmits a polling frame to each of a plurality of stations that receive the BRP frame.
  • the manner in which the PCP/AP sends the polling frame may be that the PCP/AP waits for a certain length of time after sending the polling frame to the STA. If the PCP/AP receives the BRP frame replied by the STA during the time 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 during the period, the polling frame is sent to the next STA after the end of the period.
  • FIG. 5 is a schematic diagram of interaction between a PCP/AP and an STA provided by the present invention
  • the PCP/AP sends a BRP frame
  • the BRP frame is followed by multiple TRNs.
  • the -T domain, STA1, STA2, and STA3 can receive the BRP frame respectively.
  • the PCP/AP After waiting for a period of time, the PCP/AP sends the first polling frame to STA1. After receiving the first polling frame, STA1 replies to the BRP to the PCP/AP.
  • a frame which carries the measurement result of the received signal quality measured by STA1; after receiving the BRP frame returned by STA1, the PCP/AP immediately sends a second poll frame to STA2, and after receiving the second poll frame, STA2 sends the PCP to the PCP.
  • the PCP/AP uses a directional antenna (for example, the antenna only faces one or several adjacent target sectors) to transmit a BRP frame, so only STAs in the target sector can receive the BRP frame.
  • the PCP/AP can know which STAs correspond to which sector of its own in the SLS phase, so the PCP/AP knows which STAs to send the polling frame to.
  • the purpose of the PCP/AP sending the polling frame to the STA is to obtain the measurement result of the quality of the received signal by the STA.
  • the measurement result may be the received signal quality of the TRN-T domain that is received by the STA and received by different transmit beams.
  • the target transmitting the training domain with the best signal quality or the identifier of the training domain of the target transmission may also be several TRN-Ts with the best signal quality among the received signal qualities of the TRN-T domain received by the STA.
  • the fields for example, sorted according to signal quality, sorted in the first few TRN-T domains), the measurement results are not limited herein.
  • the access point acquires, according to the measurement result returned by each station, a target transmission beam corresponding to a target transmission training domain with the best received signal quality of the station, and determines the target transmission beam as the The access point sends an optimal transmit beam of data to the station.
  • the STA after receiving the polling frame sent by the PCP/AP, the STA replies to the BRP frame, and the BRP frame carries the measurement result. For example, if the measurement result is the target TRN-T domain with the best received signal quality, then the BRP is in the BRP.
  • the target TRN-T field is identified in the frame.
  • the PCP/AP obtains the target transmit beam corresponding to the target TRN-T domain with the best received signal quality of the station according to the measurement result returned by each STA, and the target TRN-T domain corresponds to
  • the target transmit beam is that when the PCP/AP sends a BRP frame, the target TRN-T field is transmitted with the target transmit beam.
  • the PCP/AP determines the target transmit beam as the optimal transmit beam for the PCP/AP to transmit data to the STA. It should be noted that if the optimal transmit beam is not found, the PCP/AP uses multiple transmit beams to transmit multiple TRN-T domains, and repeats the above process.
  • the access point sends a BRP frame, and the BRP frame is followed by a plurality of sending training fields that are sent by different transmitting beams, and multiple stations that receive the BRP frame receive and measure multiple BSR frames.
  • the received signal quality of the transmission training field sent by the transmitting beam the access point sends a polling frame to each of the multiple sites, and the polling frame is used to obtain the measurement result of the received signal quality of the station, and the access point is according to each
  • the measurement result returned by the station obtains the target transmission beam corresponding to the target transmission training domain with the best received signal quality of the station, and determines the target transmission beam as the optimal transmission beam for the access point to send data to the station.
  • the optimal transmit beam of the access point for multiple sites can be adjusted by sending a BRP frame once, and the adjustment efficiency is high.
  • FIG. 3 is a schematic flowchart of another beam adjustment method according to an embodiment of the present invention. As shown in the figure, the beam adjustment method in this embodiment includes steps S300-S303.
  • the access point obtains, by a sector-level scanning phase, a site identifier of each of the multiple sites in the target sector.
  • the target sector may be a certain sector of the directional antenna or some adjacent sectors of the directional antenna.
  • the site information of each of the multiple sites in the target sector can be obtained, and the site information can be the site identifier of the site.
  • the access point broadcasts a BRP frame to a target sector, where the target sector includes multiple sites, and the BRP frame includes a broadcast MAC address.
  • the PCP/AP may broadcast a BRP frame to the target sector in the form of a broadcast, and the target sector includes multiple STAs, and the destination address of the BRP frame is a Broadcast Media Access Control (MAC) address. Therefore, the STAs in the target sector can receive the BRP frame.
  • the BRP frame is identified as a training for performing transmission beam adjustment, and the BRP frame is followed by a plurality of TRN-T domains transmitted by different transmission beams, and the number of TRN-T domains is one-to-one corresponding to the number of transmission beams that need to be trained, that is, A TRN-T domain is transmitted in a transmit beam.
  • the transmit beam to be trained is selected based on the antenna training results of the SLS phase.
  • the access point sends a polling frame to the identified station according to the site identifier of each of the multiple sites.
  • the PCP/AP since the PCP/AP broadcasts a BRP frame to the target sector, all the STAs in the target sector can receive the BRP frame, and the subsequent PCP/AP needs to go to the STA in the target sector.
  • Sending a polling frame because the PCP/AP can learn the station identifier of the STA in each sector in the antenna training result in the SLS phase, in the beam adjustment step, the PCP/AP can sequentially go to each of the learned sites.
  • the identified STA sends a polling frame.
  • the manner in which the polling frame is sent may be that the PCP/AP waits for a certain length of time after sending the polling frame to a certain STA.
  • the PCP/AP If the PCP/AP receives the BRP frame replied by the STA during the time 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 during the period, the polling frame is sent to the next STA after the end of the period.
  • the access point acquires, according to the measurement result returned by each station, a target transmission beam corresponding to a target transmission training domain with the best received signal quality of the station, and determines the target transmission beam as the The access point sends an optimal transmit beam of data to the station.
  • step S303 of the embodiment of the present invention refer to the step S202 of the embodiment of FIG. 2, and details are not described herein again.
  • the access point sends a BRP frame, and the BRP frame is followed by a plurality of sending training fields sent by different transmitting beams, and multiple stations receiving the BRP frame receive and measure the BRP frame.
  • the received signal quality of the transmission training domain sent by multiple different transmit beams the access point sends a polling frame to each of the multiple sites, and the polling frame is used to obtain the measurement result of the received signal quality of the station,
  • the ingress point obtains the target transmission beam corresponding to the 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 optimal transmission of the data sent by the access point to the station. Beam.
  • the optimal transmit beam of the access point for multiple sites can be adjusted by sending a BRP frame once, and the adjustment efficiency is high.
  • FIG. 4 is a schematic flowchart of still another method for adjusting a beam according to an embodiment of the present invention. As shown in the figure, the beam adjustment method in this embodiment includes steps S400-S402.
  • the access point multicasts a BRP frame, where the BRP frame carries a group identifier, where the group identifier is used to identify multiple sites that receive the BRP frame.
  • the PCP/AP may send a BRP frame in a multicast manner, where the BRP frame carries a group identifier, where the group identifier is used to identify multiple sites that receive the BRP frame, for example, the group identifier may be multicast.
  • MAC address or group ID The BRP frame is identified as a training for performing transmission beam adjustment, and the BRP frame is followed by a plurality of TRN-T domains transmitted by different transmission beams, and the number of TRN-T domains is one-to-one corresponding to the number of transmission beams that need to be trained, that is, A TRN-T domain is transmitted in a transmit beam.
  • the transmit beam to be trained is selected based on the antenna training results of the SLS phase.
  • the access point sends a polling frame to a station identified by the group identifier carried in the BRP frame.
  • the PCP/AP sends a polling frame to the STA identified by the group identifier carried in the BRP frame.
  • the manner in which the polling frame is sent may be that the PCP/AP waits for a certain length of time after sending the polling frame to a certain STA. If the PCP/AP receives the BRP frame replied by the STA during the time 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 during the period, the polling frame is sent to the next STA after the end of the period.
  • the access point acquires, according to the measurement result returned by each station, a target transmission beam corresponding to a target transmission training domain with the best received signal quality of the station, and determines the target transmission beam as the The access point sends an optimal transmit beam of data to the station.
  • step S402 of the embodiment of the present invention refer to step S202 of the embodiment of FIG. 2, and details are not described herein again.
  • the access point sends a BRP frame, and the BRP frame is followed by a plurality of sending training fields that are sent by different transmitting beams, and multiple stations that receive the BRP frame receive and measure multiple BSR frames.
  • the received signal quality of the transmission training field sent by the transmitting beam the access point sends a polling frame to each of the multiple sites, and the polling frame is used to obtain the measurement result of the received signal quality of the station, and the access point is according to each
  • the measurement result returned by the station obtains the target transmission beam corresponding to the target transmission training domain with the best received signal quality of the station, and determines the target transmission beam as the optimal transmission beam for the access point to send data to the station.
  • the optimal transmit beam of the access point for multiple sites can be adjusted by sending a BRP frame once, and the adjustment efficiency is high.
  • FIG. 6 is a schematic flowchart of still another method for adjusting a beam according to an embodiment of the present invention. As shown in the figure, the beam adjustment method in this embodiment includes steps S600-S602.
  • the station receives a BRP frame sent by the access point, and the BRP frame is followed by a plurality of sending training fields that are sent by using different transmit beams.
  • the STA in the target sector can receive the BRP frame; if the PCP/AP sends the BRP frame in multicast form
  • the STA whose group identifier matches the group identifier in the BRP frame can receive the BRP frame.
  • the BRP frame is identified as a training for performing transmission beam adjustment, and the BRP frame is followed by a plurality of TRN-T domains transmitted by different transmission beams, and the number of TRN-T domains is one-to-one corresponding to the number of transmission beams that need to be trained, that is, A TRN-T domain is transmitted in a transmit beam.
  • the transmit beam to be trained is selected based on the antenna training results of the SLS phase.
  • the station receives and measures the received signal quality of the transmit training domain sent by the different transmit beams according to the BRP frame, and generates a measurement result according to the received signal quality.
  • the STA after receiving the BRP frame, the STA performs judgment analysis on the BRP frame to determine whether to continue to receive and measure the received signal quality of multiple TRN-T domains attached to the BRP frame.
  • the determining manner needs to be determined according to The PCP/AP sends a BRP frame. For example, if the PCP/AP sends a BRP frame in multicast mode, the STA needs to match its group ID with the group ID in the BRP frame. If the match is consistent, continue. The received signal quality of multiple TRN-T domains attached to the BRP frame is received and measured.
  • the STA generates the measurement result according to the measured received signal quality, and the specific generation manner may be multiple.
  • the received signal quality of different TRN-T domains measured by the STA may be sorted in order from superior to poor, and selected. Sorting the TRN-T field in the first preset number as the measurement result; or generating the measurement result may also be the target TRN in which the received signal quality in the received signal quality of different TRN-T domains measured by the STA is optimal.
  • the -T domain or the identification target of the TRN-T domain is used as a measurement result.
  • 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, where the measurement result is used to determine the access point The optimal transmit beam of the data transmitted by the station.
  • the PCP/AP sends a polling frame to each STA in order to obtain the measurement result of each STA. After receiving the polling frame sent by the PCP/AP, the STA sends the polling frame to the PCP/AP according to the polling frame. Returning the measurement result, the measurement result is used by the PCP/AP to determine an optimal transmission beam for transmitting data to the STA, and the optimal transmission beam can enable the STA to achieve optimal reception signal quality when receiving data transmitted by the PCP/AP.
  • the access point sends a BRP frame, and the BRP frame is followed by a plurality of sending training fields that are sent by different transmitting beams, and multiple stations that receive the BRP frame receive and measure multiple BSR frames.
  • the received signal quality of the transmission training field sent by the transmitting beam the access point sends a polling frame to each of the multiple sites, and the polling frame is used to obtain the measurement result of the received signal quality of the station, and the access point is according to each
  • the measurement result returned by the station obtains the target transmission beam corresponding to the target transmission training domain with the best received signal quality of the station, and determines the target transmission beam as the access point to the site.
  • the optimal transmit beam for transmitting data In this way, the optimal transmit beam of the access point for multiple sites can be adjusted by sending a BRP frame once, and the adjustment efficiency is high.
  • FIG. 7 is a schematic flowchart of still another method for adjusting a beam according to an embodiment of the present invention, if the access point broadcasts the BRP frame to a first target sector, and the BRP frame includes the first a first identifier of a target sector; as shown, the beam adjustment method of this embodiment includes steps S700-S703;
  • the station obtains a second target sector to which the station belongs by using a sector-level scanning stage, and saves a second identifier of the second target sector.
  • the STA when performing beamforming training between the PCP/AP and the STA, the STA may obtain the second target sector to which the STA belongs by using the SLS phase of the beamforming training, and the STA saves the second identifier of the second target sector.
  • 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 station receives a BRP frame sent by the access point, and the BRP frame is followed by a plurality of sending training fields that are sent by using different transmit beams.
  • step S701 of the embodiment of the present invention refer to the step S600 of the embodiment of FIG. 6 , and details are not described herein again.
  • S702 The station matches the first identifier in the BRP frame with the second identifier, and if the matching is consistent, receiving and measuring the received signal quality of the sending training domain sent by the different sending beam, and Generating a measurement result according to the received signal quality;
  • the BRP frame when the PCP/AP broadcasts a BRP frame in a first target sector, the BRP frame includes a first identifier of the first target sector, and the first identifier may also be identified by a transmitting antenna. (TX Antenna ID) and the transmission sector identifier (TX Sector ID).
  • TX Antenna ID the transmission sector identifier
  • TX Sector ID the transmission sector identifier
  • the edge portion of the sector, but not belonging to the first target sector, may also receive the BRP frame, so in order to ensure that the PCP/AP is performing transmit beam training on the STAs in the first target sector,
  • the first identifier in the BRP frame is matched with the second identifier of the STA itself. If the matching is consistent, the received signal quality of the TRN-T domain sent by different transmit beams is received and measured, and the measurement is generated according to the received signal quality. result.
  • the STA After receiving the BRP frame, the STA continues to check whether the TX Antenna ID and/or the TX Sector ID in the BRP Request field corresponds to the PCP/AP that is trained in the SLS phase. The TX Antenna ID and/or TX Sector ID are the same. If the matches are consistent, continue to receive multiple TRN-T fields appended thereto and measure their channel parameters, and then wait for the polling frame of the PCP/AP; otherwise, discard the BRP frame and no longer receive the appended Multiple TRN-T domains.
  • the received signal qualities of different TRN-T domains measured by the STAs may be sorted in order from superior to poor, and the TRN-T field ranked in the first preset number may be selected as a measurement result; or may be The target TRN-T domain with the best received signal quality or the identification target of the TRN-T domain in the received signal quality of different TRN-T domains measured by the STA is used as the measurement result.
  • 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, where the measurement result is used to determine the access point
  • the optimal transmit beam of the data transmitted by the station is used to determine the access point.
  • step S703 of the embodiment of the present invention refer to the step S602 of the embodiment of FIG. 6 , and details are not described herein again.
  • the access point sends a BRP frame, and the BRP frame is followed by a plurality of sending training fields that are sent by different transmitting beams, and multiple stations that receive the BRP frame receive and measure multiple BSR frames.
  • the received signal quality of the transmission training field sent by the transmitting beam the access point sends a polling frame to each of the multiple sites, and the polling frame is used to obtain the measurement result of the received signal quality of the station, and the access point is according to each
  • the measurement result returned by the station obtains the target transmission beam corresponding to the target transmission training domain with the best received signal quality of the station, and determines the target transmission beam as the optimal transmission beam for the access point to send data to the station.
  • the optimal transmit beam of the access point for multiple sites can be adjusted by sending a BRP frame once, and the adjustment efficiency is high.
  • FIG. 8 is a schematic flowchart of still another method for adjusting a beam according to an embodiment of the present invention. If the access point multicasts the BRP frame, and the BRP frame includes a site that receives the BRP frame. a set of identifiers; as shown, the beam adjustment method of this embodiment includes steps S800-S802;
  • S800 The station receives a BRP frame sent by the access point, and the BRP frame is followed by a plurality of sending training fields that are sent by using different transmit beams.
  • step S800 of the embodiment of the present invention refer to the step S600 of the embodiment of FIG. 6 , and details are not described herein again.
  • the station matches its second group identifier with the first group identifier in the BRP frame, and if the matching is consistent, receiving and measuring the received signal quality of the sending training domain sent by the different sending beams, and Generating a measurement result according to the received signal quality;
  • the BRP frame when a PCP/AP sends a BRP frame in a multicast manner, the BRP frame carries a first group identifier, where the first group identifier is used to identify an STA that receives the BRP frame, usually multiple STAs.
  • the group ID is the same. Therefore, when a BRP frame is sent in the form of sampling multicast, multiple STAs can receive the BRP frame.
  • the group ID can be a multicast MAC address. Training in the BRP frame for transmit beam adjustment is identified, and multiple TRN-T domains are appended to the BRP frame.
  • the STA After receiving the BRP frame, the STA matches its second group identifier with the first group identifier in the BRP frame. If the match is consistent, the STA continues to receive and measure the received signals of multiple TRN-T domains attached to the BRP frame. Quality, and generate measurement results based on received signal quality. It should be noted that there may be multiple types of measurement results, which are not limited herein.
  • the received signal qualities of different TRN-T domains measured by the STAs may be sorted in order from superior to poor, and the TRN-T field ranked in the first preset number may be selected as a measurement result; or may be The target TRN-T domain with the best received signal quality or the identification target of the TRN-T domain in the received signal quality of different TRN-T domains measured by the STA is used as the measurement result.
  • 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, where the measurement result is used to determine the access point The optimal transmit beam of the data transmitted by the station.
  • step S802 of the embodiment of the present invention refer to the step S602 of the embodiment of FIG. 6 , and details are not described herein again.
  • the access point sends a BRP frame, and the BRP frame is followed by a plurality of sending training fields that are sent by different transmitting beams, and multiple stations that receive the BRP frame receive and measure multiple BSR frames.
  • the received signal quality of the transmission training field sent by the transmitting beam the access point sends a polling frame to each of the multiple sites, and the polling frame is used to obtain the measurement result of the received signal quality of the station, and the access point is according to each
  • the measurement result returned by the station obtains the target transmission beam corresponding to the target transmission training domain with the best received signal quality of the station, and determines the target transmission beam as the optimal transmission beam for the access point to send data to the station.
  • the optimal transmit beam of the access point for multiple sites can be adjusted by sending a BRP frame once, and the adjustment efficiency is high.
  • FIG. 9 is a schematic structural diagram of a beam adjustment apparatus according to an embodiment of the present invention.
  • the beam adjustment apparatus of this embodiment is applied to an access point.
  • the beam adjustment apparatus includes:
  • the transceiver module 100 is configured to send a BRP frame, and the BRP frame is followed by a plurality of sending training domains that are sent by different transmitting beams, so that multiple stations that receive the BRP frame receive and measure the sending of the different sending beam transmissions.
  • the received signal quality of the training domain
  • the transceiver module 100 of the PCP/AP may send a BRP frame to multiple STAs, and identify the training for performing transmission beam adjustment in the BRP frame, and the BRP frame is followed by multiple TRN-T domains, TRN-
  • TRN- The T field is a very long sequence for beam training, and one TRN-T field corresponds to one sequence.
  • the PCP/AP adds the same number of TRN-T fields behind the BRP frame according to the number of transmit beams to be trained. Each TRN-T domain is transmitted with different transmit beams to be trained, and these beams are generally selected based on the antenna training results of the SLS phase.
  • Each of the plurality of STAs receiving the BRP frame continues to receive a plurality of TRN-T fields appended to the BRP frame and measures its channel parameters, since the plurality of TRN-T domains appended to the BRP frame are different.
  • the transmit beam is transmitted, and the relative positions between the STAs and the PCP/AP are different. Therefore, each STA measures the received signal quality differently when receiving the same TRN-T field.
  • the sending, by the transceiver module 100, the BRP frame includes:
  • the transceiver module 100 broadcasts a BRP frame to a target sector, where the target sector includes multiple sites.
  • the BRP frame includes a broadcast MAC address.
  • the transceiver module 100 of the PCP/AP may broadcast a BRP frame to a target sector in a broadcast manner, and the target sector includes multiple STAs, and the destination address of the BRP frame is a broadcast media access control (Media Access Control, MAC) address, so the STAs in the target sector can receive the BRP frame.
  • the BRP frame is identified as a training for performing transmission beam adjustment, and the BRP frame is followed by a plurality of TRN-T domains transmitted by different transmission beams, and the number of TRN-T domains is one-to-one corresponding to the number of transmission beams that need to be trained, that is, A TRN-T domain is transmitted in a transmit beam.
  • the transmit beam to be trained is selected based on the antenna training results of the SLS phase.
  • the sending, by the transceiver module 100, the BRP frame includes:
  • the transceiver module 100 multicasts a BRP frame, where the BRP frame carries a group identifier, and the group identifier is used to identify multiple sites that receive the BRP frame.
  • the transceiver module 100 of the PCP/AP may send a BRP frame in a multicast manner, where the BRP frame carries a group identifier, where the group identifier is used to identify multiple sites that receive the BRP frame, such as a group identifier. It can be a multicast MAC address or a group ID.
  • the BRP frame is identified as a training for performing transmission beam adjustment, and the BRP frame is followed by a plurality of TRN-T domains transmitted by different transmission beams, and the number of TRN-T domains is one-to-one corresponding to the number of transmission beams that need to be trained, that is, A TRN-T domain is transmitted in a transmit 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 multiple sites, where the polling frame is used to obtain a measurement result of the received signal quality of the station;
  • each of the plurality of STAs waits for the polling of the PCP/AP after measuring the received signal quality of the TRN-T domain transmitted by the different transmit beams.
  • the PCP/AP transceiver module 100 sequentially transmits a polling frame to each of a plurality of stations that receive BRP frames.
  • the manner in which the PCP/AP sends the polling frame may be: after the PCP/AP sends the polling frame to the STA, it waits for a certain length of time, and if the PCP/AP receives the STA reply during the time period, The BRP frame, the PCP/AP immediately sends a poll frame to the next STA. If the PCP/AP does not receive the STA reply during this time period The BRP frame sends a polling frame to the next STA after the end of the period.
  • FIG. 5 is a schematic diagram of interaction between a PCP/AP and an STA provided by the present invention
  • the PCP/AP sends a BRP frame
  • the BRP frame is followed by multiple TRNs.
  • the -T domain, STA1, STA2, and STA3 can receive the BRP frame respectively.
  • the PCP/AP After waiting for a period of time, the PCP/AP sends the first polling frame to STA1. After receiving the first polling frame, STA1 replies to the BRP to the PCP/AP.
  • a frame which carries the measurement result of the received signal quality measured by STA1; after receiving the BRP frame returned by STA1, the PCP/AP immediately sends a second poll frame to STA2, and after receiving the second poll frame, STA2 sends the PCP to the PCP.
  • the PCP/AP uses a directional antenna (for example, the antenna only faces one or several adjacent target sectors) to transmit a BRP frame, so only STAs in the target sector can receive the BRP frame.
  • the PCP/AP can know which STAs correspond to which sector of its own in the SLS phase, so the PCP/AP knows which STAs to send the polling frame to.
  • the purpose of the PCP/AP sending the polling frame to the STA is to obtain the measurement result of the quality of the received signal by the STA.
  • the measurement result may be the received signal quality of the TRN-T domain that is received by the STA and received by different transmit beams.
  • the target transmitting the training domain with the best signal quality or the identifier of the training domain of the target transmission may also be several TRN-Ts with the best signal quality among the received signal qualities of the TRN-T domain received by the STA.
  • the fields for example, sorted according to signal quality, sorted in the first few TRN-T domains), the measurement results are not limited herein.
  • the transceiver module 100 is further configured to obtain, by using a sector-level scanning stage, a site identifier of each of the multiple sites in the target sector;
  • the target sector may be a certain sector of the directional antenna or some adjacent sectors of the directional antenna.
  • the site information of each of the plurality of sites in the target sector can be obtained.
  • Information, site information can be the site identity of the site.
  • the sending, by the transceiver module 100, the polling frame to each of the multiple sites includes:
  • the transceiver module 100 sends a polling frame to the identified station according to the site identifier of each of the multiple sites.
  • the PCP/AP since the PCP/AP broadcasts a BRP frame to the target sector, all the STAs in the target sector can receive the BRP frame, and the subsequent PCP/AP transceiver module 100 needs to go to the target sector one by one.
  • the STAs within the STA send the polling frame. Because the PCP/AP can learn the station identifier of the STA in each sector in the antenna training result in the SLS phase, the PCP/AP can sequentially learn the obtained information in the beam adjustment step.
  • the STA identified by each site identifier sends a polling frame.
  • the manner in which the polling frame is sent may be that the PCP/AP waits for a certain length of time after sending the polling frame to a certain STA.
  • the PCP/AP If the PCP/AP receives the BRP frame replied by the STA during the time 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 during the period, the polling frame is sent to the next STA after the end of the period.
  • the sending, by the transceiver module 100, the polling frame to each of the multiple sites includes:
  • the transceiver module sends a polling frame to the station identified by the group identifier carried in the BRP frame.
  • the PCP/AP transceiver module 100 sends a polling frame to the STA identified by the group identifier carried in the BRP frame.
  • the manner in which the polling frame is sent may be that the PCP/AP waits for a certain length of time after sending the polling frame to a certain STA. If the PCP/AP receives the BRP frame replied by the STA during the time 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 during the period, the polling frame is sent to the next STA after the end of the period.
  • the processing module 101 is configured to obtain, according to the measurement result returned by each station, a target transmission beam corresponding to a target transmission training domain with the best received signal quality of the station, and determine the target transmission beam as the connection
  • the in-point sends the optimal transmit beam of data to the station.
  • the STA after receiving the polling frame sent by the PCP/AP, the STA replies to the BRP frame, and the BRP frame carries the measurement result. For example, if the measurement result is the target TRN-T domain with the best received signal quality, then the BRP is in the BRP.
  • the target TRN-T field is identified in the frame.
  • the PCP/AP processing module 101 obtains the target transmit beam corresponding to the target TRN-T domain with the best received signal quality of the station according to the measurement result returned by each STA, and the target TRN-T domain.
  • the corresponding target transmit beam is that when the PCP/AP sends a BRP frame, the target TRN-T field is transmitted with the target transmit beam.
  • the PCP/AP determines the target transmit beam as the optimal transmit beam for the PCP/AP to transmit data to the STA. It should be noted that if the optimal transmit beam is not found, the PCP/AP uses multiple transmit beams to transmit multiple TRN-T domains, and repeats the above process.
  • the access point sends a BRP frame, and the BRP frame is followed by a plurality of sending training fields that are sent by different transmitting beams, and multiple stations that receive the BRP frame receive and measure multiple BSR frames.
  • the received signal quality of the transmission training field sent by the transmitting beam the access point sends a polling frame to each of the multiple sites, and the polling frame is used to obtain the measurement result of the received signal quality of the station, and the access point is according to each
  • the measurement result returned by the station obtains the target transmission beam corresponding to the target transmission training domain with the best received signal quality of the station, and determines the target transmission beam as the optimal transmission beam for the access point to send data to the station.
  • the optimal transmit beam of the access point for multiple sites can be adjusted by sending a BRP frame once, and the adjustment efficiency is high.
  • FIG. 10 is a schematic structural diagram of another beam adjusting apparatus according to an embodiment of the present invention.
  • the beam adjusting apparatus of this embodiment is applied to an access point.
  • access point 20 includes antenna 200, transmitter 201, receiver 202, processor 203, and memory 204.
  • the processor 203 controls the operation of the access point 20 and can be used to process signals.
  • Memory 204 can include read only memory and random access memory and provides instructions and data to processor 203.
  • Transmitter 201 and receiver 202 can be coupled to antenna 200, and various components of access point 20 are coupled together by bus system 205, which includes, in addition to the data bus, a power bus, a control bus, and a status signal bus. .
  • bus system 205 includes, in addition to the data bus, a power bus, a control bus, and a status signal bus.
  • bus system 205 includes, in addition to the data bus, a power bus, a control bus, and a status signal bus.
  • bus system 205 includes, in addition to the data bus
  • the memory 204 can store instructions to perform the following process:
  • the access point sends a BRP frame, and the BRP frame is followed by a plurality of sending training fields that are sent by different transmitting beams, so that multiple stations that receive the BRP frame receive and measure the sending training fields sent by the different transmitting beams.
  • Receive signal quality
  • the access point sends a polling frame to each of the plurality of stations, where the polling frame is used to obtain a measurement result of the received signal quality of the station;
  • the PCP/AP may send a BRP frame to multiple STAs, and the BRP frame is identified as training for performing transmission beam adjustment.
  • the BRP frame is followed by multiple TRN-T domains, and the TRN-T domain is very long.
  • one TRN-T field corresponds to one sequence.
  • the PCP/AP adds the same number of TRN-T fields behind the BRP frame according to the number of transmit beams to be trained.
  • Each TRN-T domain is transmitted with different transmit beams to be trained, and these beams are generally selected based on the antenna training results of the SLS phase.
  • Each of the plurality of STAs receiving the BRP frame continues to receive a plurality of TRN-T fields appended to the BRP frame and measures its channel parameters, since the plurality of TRN-T domains appended to the BRP frame are different.
  • the transmit beam is transmitted, and the relative positions between the STAs and the PCP/AP are different. Therefore, each STA measures the received signal quality differently when receiving the same TRN-T field.
  • each of the plurality of STAs waits for polling of the PCP/AP after measuring the received signal quality of the TRN-T domain transmitted by the different transmit beams.
  • the PCP/AP sequentially transmits a polling frame to each of a plurality of stations that receive the BRP frame.
  • the manner in which the PCP/AP sends the polling frame may be: after the PCP/AP sends the polling frame to the STA, it waits for a certain length of time, and if the PCP/AP receives the STA reply during the time period, The BRP frame, the PCP/AP immediately sends a poll frame to the next STA. If the PCP/AP does not receive the BRP frame replied by the STA during the period, the polling frame is sent to the next STA after the end of the period.
  • FIG. 5 is a schematic diagram of interaction between a PCP/AP and an STA provided by the present invention
  • the PCP/AP sends a BRP frame
  • the BRP frame is followed by multiple TRNs.
  • the -T domain, STA1, STA2, and STA3 can receive the BRP frame respectively.
  • the PCP/AP After waiting for a period of time, the PCP/AP sends the first polling frame to STA1. After receiving the first polling frame, STA1 replies to the BRP to the PCP/AP.
  • a frame which carries the measurement result of the received signal quality measured by STA1; after receiving the BRP frame returned by STA1, the PCP/AP immediately sends a second poll frame to STA2, and after receiving the second poll frame, STA2 sends the PCP to the PCP.
  • the PCP/AP uses a directional antenna (for example, the antenna only faces one or several adjacent target sectors) to transmit a BRP frame, so only STAs in the target sector can receive the BRP frame.
  • the PCP/AP can know which STAs correspond to which sector of its own in the SLS phase, so the PCP/AP knows which STAs to send the polling frame to.
  • the purpose of the PCP/AP sending the polling frame to the STA is to obtain the measurement result of the quality of the received signal by the STA.
  • the measurement result may be the received signal quality of the TRN-T domain that is received by the STA and received by different transmit beams.
  • the target transmitting the training domain with the best signal quality or the identifier of the training domain of the target transmission may also be several TRN-Ts with the best signal quality among the received signal qualities of the TRN-T domain received by the STA.
  • the fields for example, sorted according to signal quality, sorted in the first few TRN-T domains), the measurement results are not limited herein.
  • the STA after receiving the polling frame sent by the PCP/AP, the STA replies to the BRP frame, and the BRP frame carries the measurement result. For example, if the measurement result is the target TRN-T field with the best received signal quality, the STA is in the BRP frame. Identify the target TRN-T domain.
  • the PCP/AP obtains the target transmit beam corresponding to the target TRN-T domain with the best received signal quality of the station according to the measurement result returned by each STA, and the target TRN-T domain corresponds to The target transmit beam is sent by the target when the PCP/AP sends a BRP frame.
  • the transmit beam transmits the target TRN-T field.
  • the PCP/AP determines the target transmit beam as the optimal transmit beam for the PCP/AP to transmit data to the STA. It should be noted that if the optimal transmit beam is not found, the PCP/AP uses multiple transmit beams to transmit multiple TRN-T domains, and repeats the above process.
  • the access point sends a BRP frame, including:
  • 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.
  • the PCP/AP may broadcast a BRP frame to the target sector in the form of a broadcast, where the target sector includes multiple STAs, and the destination address of the BRP frame is a Broadcast Media Access Control (MAC) address, so The STAs in the target sector can receive the BRP frame.
  • the BRP frame is identified as a training for performing transmission beam adjustment, and the BRP frame is followed by a plurality of TRN-T domains transmitted by different transmission beams, and the number of TRN-T domains is one-to-one corresponding to the number of transmission beams that need to be trained, that is, A TRN-T domain is transmitted in a transmit beam.
  • the transmit beam to be trained is selected based on the antenna training results of the SLS phase.
  • the method before the access point broadcasts the BRP frame to the target sector, the method further includes:
  • the access point obtains a site identifier of each of the plurality of sites in the target sector by a sector level scanning phase
  • the access point sends a polling frame to each of the multiple sites, including:
  • the access point sends a polling frame to the identified station according to the site identifier of each of the multiple sites.
  • the target sector may be a certain sector of the directional antenna or some adjacent sectors of the directional antenna.
  • the site information of each of the multiple sites in the target sector can be obtained, and the site information can be the site identifier of the site.
  • the PCP/AP since the PCP/AP broadcasts the BRP frame to the target sector, all the STAs in the target sector can receive the BRP frame, and the subsequent PCP/AP needs to send the round to the STA in the target sector.
  • the frame is inspected. Because of the antenna training results in the SLS phase, the PCP/AP can learn each.
  • the station identification of the STAs within the sectors, so in the beam adjustment step, the PCP/AP may sequentially send a polling frame to the identified STAs for each of the identified station identifiers.
  • the manner in which the polling frame is sent may be that the PCP/AP waits for a certain length of time after sending the polling frame to a certain STA.
  • the PCP/AP If the PCP/AP receives the BRP frame replied by the STA during the time 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 during the period, the polling frame is sent to the next STA after the end of the period.
  • the access point sends a BRP frame, including:
  • the access point multicasts a BRP frame, and the BRP frame carries a group identifier, where the group identifier is used to identify multiple sites that receive the BRP frame.
  • the PCP/AP may send a BRP frame in a multicast manner, where the BRP frame carries a group identifier, where the group identifier is used to identify multiple sites that receive the BRP frame, for example, the group identifier may be a multicast MAC address. Or group ID.
  • the BRP frame is identified as a training for performing transmission beam adjustment, and the BRP frame is followed by a plurality of TRN-T domains transmitted by different transmission beams, and the number of TRN-T domains is one-to-one corresponding to the number of transmission beams that need to be trained, that is, A TRN-T domain is transmitted in a transmit beam.
  • the transmit beam to be trained is selected based on the antenna training results of the SLS phase.
  • the access point sends a polling frame to each of the multiple sites, including:
  • the access point sends a polling frame to the station identified by the group identifier carried in the BRP frame.
  • the PCP/AP sends a polling frame to the STA identified by the group identifier carried in the BRP frame.
  • the manner in which the polling frame is sent may be that the PCP/AP waits for a certain length of time after sending the polling frame to a certain STA. If the PCP/AP receives the BRP frame replied by the STA during the time 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 during the period, the polling frame is sent to the next STA after the end of the period.
  • the access point sends a BRP frame, and the BRP frame is followed by multiple different transmissions.
  • the transmission training field of the beam transmission the plurality of stations receiving the BRP frame receive and measure the received signal quality of the transmission training domain sent by the plurality of different transmission beams attached to the BRP frame, and the access point to each of the multiple sites Sending a polling frame, the polling frame is used to obtain a measurement result of the received signal quality of the station, and the access point obtains a target corresponding to the target sending training domain with the best received signal quality of the station according to the measurement result returned by each station.
  • the beam is transmitted and the target transmit beam is determined as the optimal transmit beam for the access point to transmit data to the station. In this way, the optimal transmit beam of the access point for multiple sites can be adjusted by sending a BRP frame once, and the adjustment efficiency is high.
  • FIG. 11 is a schematic structural diagram of another beam adjustment apparatus according to an embodiment of the present disclosure.
  • the beam adjustment apparatus of this embodiment is applied to a station.
  • the beam adjustment apparatus includes:
  • the transceiver module 300 is configured to receive a BRP frame sent by the access point, where the BRP frame is followed by a plurality of sending training fields that are sent by using different transmit beams.
  • the STA in the target sector can receive the BRP frame; if the PCP/AP sends the BRP frame in multicast form
  • the STA whose group identifier matches the group identifier in the BRP frame can receive the BRP frame.
  • the BRP frame is identified as a training for performing transmission beam adjustment, and the BRP frame is followed by a plurality of TRN-T domains transmitted by different transmission beams, and the number of TRN-T domains is one-to-one corresponding to the number of transmission beams that need to be trained, that is, A TRN-T domain is transmitted in a transmit beam.
  • the transmit beam to be trained is selected based on the antenna training results of the SLS phase.
  • the processing module 301 is configured to receive and measure, according to the BRP frame, a received signal quality of the transmit training domain sent by the different transmit beams, and generate a measurement result according to the received signal quality;
  • the processing module 301 after receiving the BRP frame, performs a judgment analysis on the BRP frame to determine whether to continue to receive and measure the received signal quality of multiple TRN-T domains attached to the BRP frame, optionally, determining.
  • the method needs to be determined according to the manner in which the PCP/AP sends a BRP frame. For example, if the PCP/AP sends a BRP frame in the multicast mode, the STA needs to match its own group identifier with the group identifier in the BRP frame. , continue to receive and measure the BRP frame attached Received signal quality for multiple TRN-T domains.
  • the STA generates the measurement result according to the measured received signal quality, and the specific generation manner may be multiple.
  • the received signal quality of different TRN-T domains measured by the STA may be sorted in order from superior to poor, and selected. Sorting the TRN-T field in the first preset number as the measurement result; or generating the measurement result may also be the target TRN in which the received signal quality in the received signal quality of different TRN-T domains measured by the STA is optimal.
  • the -T domain or the identification target of the TRN-T domain is used as a measurement result.
  • the access point broadcasts 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 station belongs by using a sector-level scanning stage, and save a second identifier of the second target sector;
  • the STA transceiver module 300 may obtain the second target sector to which the STA belongs by using the SLS phase of the beamforming training, and the STA saves the second target sector.
  • the second logo 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 receives, according to the BRP frame, the received signal quality of the transmission training domain that is sent by using the different transmit beams, and includes:
  • the processing module 301 matches the first identifier in the BRP frame with the second identifier, and if the matching is consistent, receiving and measuring the received signal quality of the sending training domain sent by the different transmitting beams.
  • the BRP frame when the PCP/AP broadcasts a BRP frame in a first target sector, the BRP frame includes a first identifier of the first target sector, and the first identifier may also be identified by a transmitting antenna. (TX Antenna ID) and the transmission sector identifier (TX Sector ID).
  • TX Antenna ID the transmission sector identifier
  • TX Sector ID the transmission sector identifier
  • the edge portion of the target sector, but not belonging to the first target sector, may also receive the BRP frame, so in order to ensure that the PCP/AP is performing transmit beam training on the STAs in the first target sector, the processing module The 301 needs to match the first identifier in the BRP frame with the second identifier of the STA itself. If the matching is consistent, the received signal quality of the TRN-T domain sent by different transmit beams is received and measured, and the measurement is generated according to the received signal quality. result.
  • the STA After receiving the BRP frame, the STA continues to check whether the TX Antenna ID and/or the TX Sector ID in the BRP Request field corresponds to the PCP/AP that is trained in the SLS phase. The TX Antenna ID and/or TX Sector ID are the same. If the matches are consistent, continue to receive multiple TRN-T fields appended thereto and measure their channel parameters, and then wait for the polling frame of the PCP/AP; otherwise, discard the BRP frame and no longer receive the appended Multiple TRN-T domains.
  • the received signal qualities of different TRN-T domains measured by the STAs may be sorted in order from superior to poor, and the TRN-T field ranked in the first preset number may be selected as a measurement result; or may be The target TRN-T domain with the best received signal quality or the identification target of the TRN-T domain in the received signal quality of different TRN-T domains measured by the STA is used as the measurement result.
  • the access point multicasts the BRP frame
  • the BRP frame includes a first group identifier that belongs to a site that receives the BRP frame
  • the processing module 301 receives and measures the received signal quality of the sending training domain sent by the different transmitting beams, and specifically includes:
  • the processing module 301 matches the second group identifier of the second group identifier with the first group identifier in the BRP frame. If the matching is consistent, the received signal quality of the sending training domain sent by the different sending beams is received and measured.
  • the BRP frame when a PCP/AP sends a BRP frame in a multicast manner, the BRP frame carries a first group identifier, where the first group identifier is used to identify an STA that receives the BRP frame, usually multiple STAs.
  • the group ID is the same. Therefore, when a BRP frame is sent in the form of sampling multicast, multiple STAs can receive the packet.
  • the group ID can be a multicast MAC address. Training in the BRP frame for transmit beam adjustment is identified, and multiple TRN-T domains are appended to the BRP frame.
  • the STA processing module 301 After receiving the BRP frame, the STA processing module 301 matches its second group identifier with the first group identifier in the BRP frame, and if the matching is consistent, continues to receive and measure multiple TRN-T domains attached to the BRP frame. Receive signal quality and generate measurements based on received signal quality. It should be noted that there may be multiple types of measurement results, which are not limited herein.
  • the received signal qualities of different TRN-T domains measured by the STAs may be sorted in order from superior to poor, and the TRN-T field ranked in the first preset number may be selected as a measurement result; or may be The target TRN-T domain with the best received signal quality or the identification target of the TRN-T domain in the received signal quality of different TRN-T domains measured by the STA is 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 the access The point at which the point sends the optimal transmit beam of data to the station.
  • the PCP/AP sends a polling frame to each STA in order to obtain the measurement result of each STA.
  • the transceiver module 300 After the STA receives the polling frame sent by the PCP/AP, the transceiver module 300 according to the polling frame.
  • the PCP/AP returns a measurement result, which is used by the PCP/AP to determine an optimal transmit beam for transmitting data to the STA, and the optimal transmit beam can enable the STA to receive an optimal received signal quality when receiving data transmitted by the PCP/AP.
  • the access point sends a BRP frame, and the BRP frame is followed by a plurality of sending training fields that are sent by different transmitting beams, and multiple stations that receive the BRP frame receive and measure multiple BSR frames.
  • the received signal quality of the transmission training field sent by the transmitting beam the access point sends a polling frame to each of the multiple sites, and the polling frame is used to obtain the measurement result of the received signal quality of the station, and the access point is according to each
  • the measurement result returned by the station obtains the target transmission beam corresponding to the target transmission training domain with the best received signal quality of the station, and determines the target transmission beam as the optimal transmission beam for the access point to send data to the station.
  • the optimal transmit beam of the access point for multiple sites can be adjusted by sending a BRP frame once, and the adjustment efficiency is high.
  • FIG. 12 is a schematic structural diagram of still another beam adjusting apparatus according to an embodiment of the present invention.
  • the beam adjusting apparatus of this embodiment is applied to a station.
  • 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 can be used to process signals.
  • Memory 404 can include read only memory and random access memory and provides instructions and data to processor 403.
  • Transmitter 401 and receiver 402 can be coupled to antenna 400, and various components of station 40 are coupled together by bus system 405, which in addition to the data bus includes a power bus, a control bus, and a status signal bus.
  • bus system 405 which in addition to the data bus includes a power bus, a control bus, and a status signal bus.
  • various buses are labeled as bus system 405 in the figure.
  • memory 404 can store instructions that perform the following processes:
  • the station receives a BRP frame sent by the access point, and the BRP frame is followed by a plurality of sending training fields sent by different transmitting beams;
  • the STA in the target sector can receive the BRP frame; if the PCP/AP sends the BRP frame in the form of multicast, The STA whose identity is consistent with the group identity in the BRP frame can receive the BRP frame.
  • the BRP frame is identified as a training for performing transmission beam adjustment, and the BRP frame is followed by a plurality of TRN-T domains transmitted by different transmission beams, and the number of TRN-T domains is one-to-one corresponding to the number of transmission beams that need to be trained, that is, A TRN-T domain is transmitted in a transmit beam.
  • the transmit beam to be trained is selected based on the antenna training results of the SLS phase.
  • the STA after receiving the BRP frame, the STA performs a judgment analysis on the BRP frame to determine whether to continue to receive and measure the received signal quality of multiple TRN-T domains that are included in the BRP frame.
  • the determining manner needs to be based on the PCP/ The AP sends a BRP frame to determine, for example, if the PCP/AP is multicast. If the BRP frame is sent in the form, the STA needs to match its own group identifier with the group identifier in the BRP frame. If the matching is consistent, the receiving signal quality of multiple TRN-T domains attached to the BRP frame is continuously received and measured.
  • the STA generates the measurement result according to the measured received signal quality, and the specific generation manner may be multiple.
  • the received signal quality of different TRN-T domains measured by the STA may be sorted in order from superior to poor, and selected. Sorting the TRN-T field in the first preset number as the measurement result; or generating the measurement result may also be the target TRN in which the received signal quality in the received signal quality of different TRN-T domains measured by the STA is optimal.
  • the -T domain or the identification target of the TRN-T domain is used as a measurement result.
  • the PCP/AP sends a polling frame to each STA in order to obtain the measurement result of each STA.
  • the STA After receiving the polling frame sent by the PCP/AP, the STA returns the measurement to the PCP/AP according to the polling frame.
  • the measurement result is used by the PCP/AP to determine an optimal transmit beam for transmitting data to the STA, and the optimal transmit beam can enable the STA to achieve optimal received signal quality when receiving data transmitted by the PCP/AP.
  • the access point broadcasts the BRP frame to a first target sector, and the BRP frame includes a first identifier of the first target sector;
  • the station Before receiving the BRP frame sent by the access point, the station further includes:
  • the STA may obtain the second target sector to which the STA belongs by using the SLS phase of the beamforming training, and the STA saves the second identifier of the second target sector.
  • 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 station receives and measures the received signal quality of the sending training domain that is sent by using the different transmit beams, including:
  • the station matches the first identifier in the BRP frame with the second identifier, if If the matching is consistent, the received signal quality of the transmission training domain sent by the different transmit beams is received and measured.
  • the first identifier may also be identified by a transmit antenna (TX Antenna ID) and the TX Sector ID.
  • TX Antenna ID transmit antenna
  • the PCP/AP broadcasts a BRP frame in the first target sector, only the STAs in the first target sector can receive the BRP frame, but there may be an exception. For example, one STA is in the first target. If the edge portion of the sector does not belong to the first target sector, the BRP frame may also be received.
  • the BRP needs to be performed.
  • the first identifier in the frame is matched with the second identifier of the STA itself. If the matching is consistent, the received signal quality of the TRN-T domain sent by different transmit beams is received and measured, and the measurement result is generated according to the received signal quality.
  • the STA After receiving the BRP frame, the STA continues to check whether the TX Antenna ID and/or the TX Sector ID in the BRP Request field corresponds to the PCP/AP that is trained in the SLS phase. The TX Antenna ID and/or TX Sector ID are the same. If the matches are consistent, continue to receive multiple TRN-T fields appended thereto and measure their channel parameters, and then wait for the polling frame of the PCP/AP; otherwise, discard the BRP frame and no longer receive the appended Multiple TRN-T domains.
  • the received signal qualities of different TRN-T domains measured by the STAs may be sorted in order from superior to poor, and the TRN-T field ranked in the first preset number may be selected as a measurement result; or may be The target TRN-T domain with the best received signal quality or the identification target of the TRN-T domain in the received signal quality of different TRN-T domains measured by the STA is used as the measurement result.
  • the access point multicasts the BRP frame, and the BRP frame includes a first group identifier of a station that receives the BRP frame;
  • the received signal quality of the training domain including;
  • the station matches its own second group identifier with the first group identifier in the BRP frame. If the matching is consistent, the station receives and measures the received signal quality of the sending training domain sent by the different transmitting beams.
  • the BRP frame carries a first group identifier, where the first group identifier is used to identify the STA that receives the BRP frame, and the group identifier of multiple STAs.
  • the same is true. Therefore, when a BRP frame is sent in the form of sampling multicast, multiple STAs can receive the BRP frame.
  • the group ID can be a multicast MAC address. Training in the BRP frame for transmit beam adjustment is identified, and multiple TRN-T domains are appended to the BRP frame.
  • the STA After receiving the BRP frame, the STA matches its second group identifier with the first group identifier in the BRP frame. If the match is consistent, the STA continues to receive and measure the received signals of multiple TRN-T domains attached to the BRP frame. Quality, and generate measurement results based on received signal quality. It should be noted that there may be multiple types of measurement results, which are not limited herein.
  • the received signal qualities of different TRN-T domains measured by the STAs may be sorted in order from superior to poor, and the TRN-T field ranked in the first preset number may be selected as a measurement result; or may be The target TRN-T domain with the best received signal quality or the identification target of the TRN-T domain in the received signal quality of different TRN-T domains measured by the STA is used as the measurement result.
  • the access point sends a BRP frame, and the BRP frame is followed by a plurality of sending training fields that are sent by different transmitting beams, and multiple stations that receive the BRP frame receive and measure multiple BSR frames.
  • the received signal quality of the transmission training field sent by the transmitting beam the access point sends a polling frame to each of the multiple sites, and the polling frame is used to obtain the measurement result of the received signal quality of the station, and the access point is according to each
  • the measurement result returned by the station obtains the target transmission beam corresponding to the target transmission training domain with the best received signal quality of the station, and determines the target transmission beam as the optimal transmission beam for the access point to send data to the station.
  • the optimal transmit beam of the access point for multiple sites can be adjusted by sending a BRP frame once, and the adjustment efficiency is high.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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Abstract

一种波束调整方法，该波束调整方法包括：接入点发送波束调整协议BRP帧，BRP帧后面附带多个以不同发送波束发送的发送训练域，以使接收BRP帧的多个站点接收并测量不同发送波束发送的发送训练域的接收信号质量；接入点向多个站点中的每个站点发送轮询帧，轮询帧用于获取该站点对接收信号质量的测量结果；接入点根据每个站点返回的测量结果获取该站点接收信号质量最优的目标发送训练域所对应的目标发送波束，并将目标发送波束确定为接入点向所述站点发送数据的最优发送波束。采用本发明可以通过发送一次BRP帧调整接入点对于多个站点的最优发送波束，调整效率高。

Description

一种波束调整方法及装置 技术领域
本发明涉及无线网络技术领域，尤其涉及一种波束调整方法及装置。
背景技术
IEEE 802.11ad是规范工作在60GHz频带上的无线局域网(Wireless Local Area Network，WLAN)设备的技术协议，采用802.11ad协议进行通信的网络通常被称为定向数吉比特(Directional Multi Gigabit，DMG)网络，在DMG网络中通常由一个接入点和多个站点构成，DMG网络中的接入点由于频带特性通常采用定向天线向各个站点发送数据，定向天线与传统的全向天线不同，定向天线通常对于某一个站点存在接收信号质量最好的最优发送波束。接入点与站点之间最优发送波束的选择通常是通过波束成形训练(beamforming training，BF training)进行选择，BF training过程分为两个阶段，第一阶段是扇区级扫描(sector-level sweep，SLS)，第二阶段是波束调整协议(Beam Refinement Protocol，BRP)，SLS阶段一般对接入点与站点进行粗略的调整，BRP阶段在SLS的基础上对接入点和站点之间进行精确的训练和调整。其中BRP阶段的波束调整步骤(Beam Refinement Transaction，BRT)用于调整接入点和站点之间的发送波束和/或接收波束。当用来调整接入点的发送波束时，具体的调整步骤如下：
接入点单播BRP帧给一个站点，该BRP帧后面附带多个发送训练(Transmit training，TRN-T)域，每个TRN-T域以不同的发送波束发送；
该站点接收到该BRP帧及其后面附带的多个TRN-T域，并测量其信道参数，该站点向接入点回复BRP帧，并在BRP帧中标识出接收信号质量最优的TRN-T域；
接入点根据该站点的回复确定自己对于该站点的最优发送波束。
现有技术中，当接入点调整自己的发送波束时，每次只能给一个站点单播BRP帧及其BRP帧后面附带的多个不同发送波束发送的TRN-T域；一次传输 只能调整接入点对于一个站点的发送波束，由于TRN-T域是一个非常长的序列，传输耗时很长，因此现有技术中接入点的发送波束调整方式效率极低。
发明内容
本发明实施例提供了一种波束调整方法及装置，可以通过发送一次BRP帧调整接入点对于多个站点的最优发送波束，调整效率高。
本发明第一方面提供一种波束调整方法，包括：
接入点发送BRP帧，所述BRP帧后面附带多个以不同发送波束发送的发送训练域，以使接收所述BRP帧的多个站点接收并测量所述不同发送波束发送的发送训练域的接收信号质量；
所述接入点向所述多个站点中的每个站点发送轮询帧，所述轮询帧用于获取该站点对接收信号质量的测量结果；
所述接入点根据所述每个站点返回的所述测量结果获取该站点接收信号质量最优的目标发送训练域所对应的目标发送波束，并将所述目标发送波束确定为所述接入点向所述站点发送数据的最优发送波束。
基于第一方面，在第一方面的第一种可行的实施方式中，所述测量结果包括所述站点所测量的接收信号质量中最优接收信号质量对应的目标发送训练域。
基于第一方面，在第一方面的第二种可行的实施方式中，所述接入点发送BRP帧，包括：
所述接入点向目标扇区广播BRP帧，所述目标扇区包括多个站点，所述BRP帧包括广播MAC地址。
基于第一方面第二种可行的实施方式，在第一方面的第三种可行的实施方式中，所述接入点向目标扇区广播BRP帧之前，还包括：
所述接入点通过扇区级扫描阶段获得目标扇区内的所述多个站点中每个站点的站点标识；
所述接入点向所述多个站点中的每个站点发送轮询帧，包括：
所述接入点根据所述多个站点中每个站点的站点标识，向所述站点标识所标识的站点发送轮询帧。
基于第一方面，在第一方面的第四种可行的实施方式中，所述接入点发送BRP帧，包括：
所述接入点组播BRP帧，所述BRP帧携带组标识，所述组标识用于标识接收所述BRP帧的多个站点。
基于第一方面第四种可行的实施方式，在第一方面的第五种可行的实施方式中，所述接入点向所述多个站点中的每个站点发送轮询帧，包括：
所述接入点向所述BRP帧中所携带的所述组标识所标识的站点发送轮询帧。
本发明第二方面提供一种波束调整方法，包括：
站点接收接入点发送的BRP帧，所述BRP帧后面附带多个以不同发送波束发送的发送训练域；
所述站点根据所述BRP帧，接收并测量所述不同发送波束发送的发送训练域的接收信号质量，并根据所述接收信号质量生成测量结果；
所述站点接收所述接入点发送的轮询帧，并根据所述轮询帧向所述接入点返回所述测量结果，所述测量结果用于确定所述接入点向所述站点发送数据的最优发送波束。
基于第二方面，在第二方面的第一种可行的实施方式中，所述测量结果包括所述站点所测量的接收信号质量中最优接收信号质量所对应的目标发送训练域。
基于第二方面，在第二方面的第二种可行的实施方式中，若所述接入点向第一目标扇区广播发送所述BRP帧，且所述BRP帧包括所述第一目标扇区的第一标识；
所述站点接收接入点发送的BRP帧之前，还包括：
所述站点通过扇区级扫描阶段获得所述站点所属第二目标扇区，并保存所述第二目标扇区的第二标识；
所述站点根据所述BRP帧，接收并测量接收所述不同发送波束发送的发送训练域的接收信号质量，包括：
所述站点将所述BRP帧中的所述第一标识与所述第二标识进行匹配，若匹配一致，则接收并测量所述不同发送波束发送的发送训练域的接收信号质量。
基于第二方面，在第二方面的第三种可行的实施方式中，若所述接入点组播所述BRP帧，且所述BRP帧包括接收所述BRP帧的站点所属第一组标识；
所述站点根据所述BRP帧，接收并测量所述不同发送波束发送的发送训练域的接收信号质量，包括；
所述站点将自身的第二组标识与所述BRP帧中的第一组标识进行匹配，若匹配一致，则接收并测量所述不同发送波束发送的发送训练域的接收信号质量。
本发明第三方面提供一种波束调整装置，应用于接入点，包括：
收发模块，用于发送BRP帧，所述BRP帧后面附带多个以不同发送波束发送的发送训练域，以使接收所述BRP帧的多个站点接收并测量所述不同发送波束发送的发送训练域的接收信号质量；
所述收发模块还用于向所述多个站点中的每个站点发送轮询帧，所述轮询帧用于获取该站点对接收信号质量的测量结果；
处理模块，用于根据所述每个站点返回的所述测量结果获取该站点接收信号质量最优的目标发送训练域所对应的目标发送波束，并将所述目标发送波束确定为所述接入点向所述站点发送数据的最优发送波束。
基于第三方面，在第三方面的第一种可行的实施方式中，所述测量结果包括所述站点所测量的接收信号质量中最优接收信号质量对应的目标发送训练域。
基于第三方面，在第三方面的第二种可行的实施方式中，所述收发模块发送BRP帧具体包括：
所述收发模块向目标扇区广播BRP帧，所述目标扇区包括多个站点，所述BRP帧包括广播MAC地址。
基于第三方面的第二种可行的实施方式，在第三方面的第三种可行的实施方式中，所述收发模块还用于通过扇区级扫描阶段获得目标扇区内的所述多个站点中每个站点的站点标识；
所述收发模块向所述多个站点中的每个站点发送轮询帧具体包括：
所述收发模块根据所述多个站点中每个站点的站点标识，向所述站点标识所标识的站点发送轮询帧。
基于第三方面，在第三方面的第四种可行的实施方式中，所述收发模块发送BRP帧具体包括：
所述收发模块组播BRP帧，所述BRP帧携带组标识，所述组标识用于标识接收所述BRP帧的多个站点。
基于第三方面的第四种可行的实施方式，在第三方面的第五种可行的实施方式中，所述收发模块向所述多个站点中的每个站点发送轮询帧具体包括：
所述收发模块向所述BRP帧中所携带的所述组标识所标识的站点发送轮询帧。
本发明第四方面提供一种波束调整装置，应用于站点，包括：
收发模块，用于接收接入点发送的BRP帧，所述BRP帧后面附带多个以不同发送波束发送的发送训练域；
处理模块，用于根据所述BRP帧，接收并测量所述不同发送波束发送的发送训练域的接收信号质量，并根据所述接收信号质量生成测量结果；
所述收发模块还用于接收所述接入点发送的轮询帧，并根据所述轮询帧向所述接入点返回所述测量结果，所述测量结果用于确定所述接入点向所述站点发送数据的最优发送波束。
基于第四方面，在第四方面的第一种可行的实施方式中，所述测量结果包括所述站点所测量的接收信号质量中最优接收信号质量所对应的目标发送训练域。
基于第四方面，在第四方面的第二种可行的实施方式中，若所述接入点向第一目标扇区广播发送所述BRP帧，且所述BRP帧包括所述第一目标扇区的第一标识；
所述收发模块还用于通过扇区级扫描阶段获得所述站点所属第二目标扇区，并保存所述第二目标扇区的第二标识；
所述处理模块根据所述BRP帧，接收并测量接收所述不同发送波束发送的发送训练域的接收信号质量具体包括：
所述处理模块将所述BRP帧中的所述第一标识与所述第二标识进行匹配，若匹配一致，则接收并测量所述不同发送波束发送的发送训练域的接收信号质量。
基于第四方面，在第四方面的第三种可行的实施方式中，若所述接入点组播所述BRP帧，且所述BRP帧包括接收所述BRP帧的站点所属第一组标识；
所述处理模块根据所述BRP帧，接收并测量所述不同发送波束发送的发送训练域的接收信号质量具体包括；
所述处理模块将自身的第二组标识与所述BRP帧中的第一组标识进行匹配，若匹配一致，则接收并测量所述不同发送波束发送的发送训练域的接收信号质量。
本发明实施例中，接入点发送BRP帧，该BRP帧后面附带多个以不同发送波束发送的发送训练域，接收该BRP帧的多个站点接收并测量该BRP帧后附带的多个不同发送波束发送的发送训练域的接收信号质量，接入点向多个站点中每个站点发送轮询帧，该轮询帧用于获取该站点对接收信号质量的测量结果，接入点根据每个站点返回的测量结果获取该站点接收信号质量最优的目标发送训练域所对应的目标发送波束，并将该目标发送波束确定为接入点向该站点 发送数据的最优发送波束。这种方式可以通过发送一次BRP帧调整接入点对于多个站点的最优发送波束，调整效率高。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的WLAN部署场景的系统示意图
图2为本发明实施例提供的一种波束调整方法的流程示意图；
图3为本发明实施例提供的另一种波束调整方法的流程示意图；
图4为本发明实施例提供的又一种波束调整方法的流程示意图；
图5为本发明实施例提供的一种接入点与站点之间的交互示意图；
图6为本发明实施例提供的又一种波束调整方法的流程示意图；
图7为本发明实施例提供的又一种波束调整方法的流程示意图；
图8为本发明实施例提供的又一种波束调整方法的流程示意图；
图9为本发明实施例提供的一种应用于接入点的波束调整装置的结构示意图；
图10为本发明实施例提供的另一种应用于接入点的波束调整装置的结构示意图；
图11为本发明实施例提供的一种应用于站点的波束调整装置的结构示意图；
图12为本发明实施例提供的另一种应用于站点的波束调整装置的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明实施例的波束调整方法可以应用于支持802.11ad协议的DMG网络中。如图1所示，为一个典型的WLAN部署场景的系统示意图，在网络中包括一个接入点和多个站点STA，接入点分别与站点STA1、STA2以及STA3进行通信。接入站点可以为个人基本服务集(BSS)控制点(personal basic service set(PBSS)control point，PCP)或者接入点(Access Point，AP)，PCP在PBSS中协调其他终端站点接入无线媒介。AP对WLAN中的终端站点提供接入服务，以及进行管理和协调终端站点等。由于DMG网络的频带特性，PCP/AP通常采用定向天线向STA1、STA2以及STA3发送数据。采用定向天线则需要找到分别向STA1、STA2以及STA3发送数据的最优发送波束，以使站点接收信号质量最好。通常接入点是通过BF training获得向各个站点发送数据的最优发送波束。
进行BF training的两个站点分别作为发起方和响应方。在DMG网络的PCP/AP和STA之间的BF training过程中，PCP/AP一般作为发起方，STA一般作为响应方。BF training过程分为两个阶段。第一阶段是SLS，第二阶段是BRP，其中BRP阶段包含波束调整步骤，波束调整步骤即是用来调整PCP/AP和/或STA的发送波束和/或接收波束。本发明实施例中，当用来调整PCP/AP的发送波束，以获得PCP/AP向STA发送数据的最优发送波束时，PCP/AP以广播或者组播的形式发送BRP帧，该BRP帧后面附带多个以不同发送波束发送的TRN-T域，接收到该BRP帧的多个站点中的每个站点依次测量接收该不同发送波束发送的TRN-T域的接收信号质量，如图1所示，若STA1、STA2以及STA3均接收到该BRP帧，则每个站点均接收并测量自身接收BRP帧后的TRN-T域的接收信号质量，并将接收信号质量最优的目标TRN-T域返回到 PCP/AP，PCP/AP则将该目标TRN-T域对应的发送波束确定为向该站点发送数据的最优发送波束，需要说明的是，STA1、STA2以及STA3中各个站点所返回的目标TRN-T域可能不同，因此各个站点所对应的最优发送波束可能不同。由于这种波束调整方式中，PCP/AP发送一次BRP帧可以调整多个站点的发送波束，因此调整效率高。
请参照图2，为本发明实施例提供的一种波束调整方法的流程示意图，如图所示，本实施例的波束调整方法包括步骤S200-S202；
S200，接入点发送BRP帧，所述BRP帧后面附带多个以不同发送波束发送的发送训练域，以使接收所述BRP帧的多个站点接收并测量所述不同发送波束发送的发送训练域的接收信号质量；
本发明实施例中，PCP/AP可以发送一个BRP帧给多个STA，在BRP帧中标识为进行发送波束调整的训练，该BRP帧后面附带多个TRN-T域，TRN-T域为非常长用于进行波束训练的的序列，一个TRN-T域对应一个序列。PCP/AP根据要训练的发送波束的数量，附加相同数量的TRN-T域在BRP帧后面。每个TRN-T域以不同的要训练的发送波束发送，这些波束一般是基于SLS阶段的天线训练结果进行选取的。
接收到该BRP帧的多个STA中的每个STA继续接收附加在BRP帧后面的多个TRN-T域并测量其信道参数，由于附加在BRP帧后面的多个TRN-T域以不同的发送波束进行发送，且各个STA与PCP/AP之间的相对位置不同，因此每个STA在测量接收同一个TRN-T域时所测得的接收信号质量不同。
S201，所述接入点向所述多个站点中的每个站点发送轮询帧，所述轮询帧用于获取该站点对接收信号质量的测量结果；
本发明实施例中，多个STA中的每个STA在测量接收不同发送波束发送的TRN-T域的接收信号质量之后，等待PCP/AP的轮询。PCP/AP向接收BRP帧的多个站点中的每个站点依次发送轮询帧。可选的，PCP/AP发送轮询帧的方式可以是，PCP/AP向某一个STA发送轮询帧后，等待一段特定长度的时间， 若在该时段内，PCP/AP收到该STA回复的BRP帧，则PCP/AP立即向下一个STA发送轮询帧。若在该时段内，PCP/AP未收到该STA回复的BRP帧，则在该时段结束后向下一个STA发送轮询帧。
具体可选的，如图5所示，即是本发明提供的一种PCP/AP与STA之间交互的示意图；如图所示，PCP/AP发送BRP帧，该BRP帧后面附带多个TRN-T域，STA1、STA2以及STA3分别可以接收到该BRP帧，等待一段时间后，PCP/AP向STA1发送第一轮询帧，STA1收到第一轮询帧后，向PCP/AP回复BRP帧，其中携带STA1所测量的接收信号质量的测量结果；PCP/AP当接收到STA1返回的BRP帧后，立即向STA2发送第二轮询帧，STA2收到第二轮询帧后，向PCP/AP回复BRP帧，其中携带STA2所测量的接收信号质量的测量结果；PCP/AP当接收到STA2返回的BRP帧后，立即向STA3发送第三轮询帧，STA3收到第三轮询帧后，向PCP/AP回复BRP帧，其中携带STA3所测量的接收信号质量的测量结果。
需要说明的是，PCP/AP用定向天线(例如，天线只朝向某一个或几个相邻的目标扇区)发送BRP帧，因此只有该目标扇区内的STA能够接收到该BRP帧。PCP/AP在SLS阶段可以获知哪些STA对应于自己的哪个扇区，因此PCP/AP知道要向哪些STA发送轮询帧。
PCP/AP向STA发送轮询帧的目的在于获取该STA对接收信号质量的测量结果，可选的，测量结果可以是该STA测量的接收不同发送波束发送的TRN-T域的接收信号质量中信号质量最优的目标发送训练域或者该目标发送训练域的标识，也可以是该STA测量的接收不同发送波束发送的TRN-T域的接收信号质量中信号质量最优的几个TRN-T域(例如，根据信号质量进行排序，排序在最前的几个TRN-T域)，测量结果在此不作限定。
S202，所述接入点根据所述每个站点返回的所述测量结果获取该站点接收信号质量最优的目标发送训练域所对应的目标发送波束，并将所述目标发送波束确定为所述接入点向所述站点发送数据的最优发送波束。
本发明实施例中，STA接收到PCP/AP发送的轮询帧后，回复BRP帧，BRP帧中携带测量结果，例如若测量结果为接收信号质量最好的目标TRN-T域，则在BRP帧中标识出目标TRN-T域。
无论测量结果以何种形式存在，PCP/AP均根据每个STA返回的测量结果获取该站点接收信号质量最优的目标TRN-T域所对应的目标发送波束，目标TRN-T域所对应的目标发送波束即是在PCP/AP发送BRP帧时，以该目标发送波束发送该目标TRN-T域。PCP/AP将目标发送波束确定为PCP/AP向该STA发送数据的最优发送波束。需要说明的是，若未找到最优发送波束，则PCP/AP采用其它发送波束发送多个TRN-T域，并重复上述过程。
本发明实施例中，接入点发送BRP帧，该BRP帧后面附带多个以不同发送波束发送的发送训练域，接收该BRP帧的多个站点接收并测量该BRP帧后附带的多个不同发送波束发送的发送训练域的接收信号质量，接入点向多个站点中每个站点发送轮询帧，该轮询帧用于获取该站点对接收信号质量的测量结果，接入点根据每个站点返回的测量结果获取该站点接收信号质量最优的目标发送训练域所对应的目标发送波束，并将该目标发送波束确定为接入点向该站点发送数据的最优发送波束。这种方式可以通过发送一次BRP帧调整接入点对于多个站点的最优发送波束，调整效率高。
请参照图3，为本发明实施例提供的另一种波束调整方法的流程示意图，如图所示，本实施例的波束调整方法包括步骤S300-S303；
S300，所述接入点通过扇区级扫描阶段获得目标扇区内的所述多个站点中每个站点的站点标识；
本发明实施例中，目标扇区可以为定向天线的某一个扇区或者为定向天线的某几个相邻扇区。PCP/AP在SLS阶段与目标扇区内的STA进行波束成形训练时，可以获得目标扇区内的多个站点中每个站点的站点信息，站点信息可以为该站点的站点标识。
S301，所述接入点向目标扇区广播BRP帧，所述目标扇区包括多个站点，所述BRP帧包括广播MAC地址。
本发明实施例中，PCP/AP可以是以广播的形式向目标扇区广播BRP帧，目标扇区包括多个STA，BRP帧的目的地址为广播媒体访问控制(Media Access Control，MAC)地址，因此在目标扇区内的STA均可以收到该BRP帧。BRP帧中标识为进行发送波束调整的训练，该BRP帧后面附带多个不同发送波束发送的TRN-T域，TRN-T域的数量与需要进行训练的发送波束的数量一一对应，即是一个TRN-T域以一种发送波束发送。需要训练的发送波束是根据SLS阶段的天线训练结果所选取的。
S302，所述接入点根据所述多个站点中每个站点的站点标识，向所述站点标识所标识的站点发送轮询帧。
本发明实施例中，由于PCP/AP是向目标扇区广播发送BRP帧，因此目标扇区内的所有STA均可以接收到该BRP帧，后续PCP/AP需要一一向目标扇区内的STA发送轮询帧，由于在SLS阶段的天线训练结果中，PCP/AP可以获知每一个扇区内的STA的站点标识，因此在波束调整步骤中，PCP/AP可以依次向所获知的每个站点标识所标识的STA发送轮询帧。可选的，具体发送轮询帧的方式可以是，PCP/AP向某一个STA发送轮询帧后，等待一段特定长度的时间。若在该时段内，PCP/AP收到该STA回复的BRP帧，则PCP/AP立即向下一个STA发送轮询帧。若在该时段内，PCP/AP未收到该STA回复的BRP帧，则在该时段结束后向下一个STA发送轮询帧。
S303，所述接入点根据所述每个站点返回的所述测量结果获取该站点接收信号质量最优的目标发送训练域所对应的目标发送波束，并将所述目标发送波束确定为所述接入点向所述站点发送数据的最优发送波束。
本发明实施例步骤S303请参照图2的实施例步骤S202，在此不再赘述。
本发明实施例中，接入点发送BRP帧，该BRP帧后面附带多个以不同发送波束发送的发送训练域，接收该BRP帧的多个站点接收并测量该BRP帧后附带 的多个不同发送波束发送的发送训练域的接收信号质量，接入点向多个站点中每个站点发送轮询帧，该轮询帧用于获取该站点对接收信号质量的测量结果，接入点根据每个站点返回的测量结果获取该站点接收信号质量最优的目标发送训练域所对应的目标发送波束，并将该目标发送波束确定为接入点向该站点发送数据的最优发送波束。这种方式可以通过发送一次BRP帧调整接入点对于多个站点的最优发送波束，调整效率高。
请参照图4，为本发明实施例提供的又一种波束调整方法的流程示意图，如图所示，本实施例的波束调整方法包括步骤S400-S402；
S400，所述接入点组播BRP帧，所述BRP帧携带组标识，所述组标识用于标识接收所述BRP帧的多个站点。
本发明实施例中，PCP/AP可以是以组播的形式发送BRP帧，该BRP帧中携带组标识，该组标识用于标识接收该BRP帧的多个站点，例如组标识可以是组播MAC地址或者组标识(Group ID)。BRP帧中标识为进行发送波束调整的训练，该BRP帧后面附带多个不同发送波束发送的TRN-T域，TRN-T域的数量与需要进行训练的发送波束的数量一一对应，即是一个TRN-T域以一种发送波束发送。需要训练的发送波束是根据SLS阶段的天线训练结果所选取的。
S401，所述接入点向所述BRP帧中所携带的所述组标识所标识的站点发送轮询帧。
本发明实施例中，PCP/AP向BRP帧中所携带的组标识所标识的STA发送轮询帧，通常多个STA拥有同一个组标识。可选的，具体发送轮询帧的方式可以是，PCP/AP向某一个STA发送轮询帧后，等待一段特定长度的时间。若在该时段内，PCP/AP收到该STA回复的BRP帧，则PCP/AP立即向下一个STA发送轮询帧。若在该时段内，PCP/AP未收到该STA回复的BRP帧，则在该时段结束后向下一个STA发送轮询帧。
S402，所述接入点根据所述每个站点返回的所述测量结果获取该站点接收信号质量最优的目标发送训练域所对应的目标发送波束，并将所述目标发送波束确定为所述接入点向所述站点发送数据的最优发送波束。
本发明实施例步骤S402请参照图2的实施例步骤S202，在此不再赘述。
本发明实施例中，接入点发送BRP帧，该BRP帧后面附带多个以不同发送波束发送的发送训练域，接收该BRP帧的多个站点接收并测量该BRP帧后附带的多个不同发送波束发送的发送训练域的接收信号质量，接入点向多个站点中每个站点发送轮询帧，该轮询帧用于获取该站点对接收信号质量的测量结果，接入点根据每个站点返回的测量结果获取该站点接收信号质量最优的目标发送训练域所对应的目标发送波束，并将该目标发送波束确定为接入点向该站点发送数据的最优发送波束。这种方式可以通过发送一次BRP帧调整接入点对于多个站点的最优发送波束，调整效率高。
请参照图6，为本发明实施例提供的又一种波束调整方法的流程示意图，如图所示，本实施例的波束调整方法包括步骤S600-S602；
S600，站点接收接入点发送的BRP帧，所述BRP帧后面附带多个以不同发送波束发送的发送训练域；
本发明实施例中，若PCP/AP以广播的形式向目标扇区广播发送BRP帧，则在目标扇区内的STA可以接收到该BRP帧；若PCP/AP以组播的形式发送BRP帧，则组标识与BRP帧中的组标识匹配一致的STA可以接收到该BRP帧。BRP帧中标识为进行发送波束调整的训练，该BRP帧后面附带多个不同发送波束发送的TRN-T域，TRN-T域的数量与需要进行训练的发送波束的数量一一对应，即是一个TRN-T域以一种发送波束发送。需要训练的发送波束是根据SLS阶段的天线训练结果所选取的。
S601，所述站点根据所述BRP帧，接收并测量所述不同发送波束发送的发送训练域的接收信号质量，并根据所述接收信号质量生成测量结果；
本发明实施例中，STA接收到BRP帧后，对BRP帧进行判断分析以确定是否继续接收并测量BRP帧后面附带的多个TRN-T域的接收信号质量，可选的，确定方式需要根据PCP/AP发送BRP帧的方式进行确定，例如，若PCP/AP以组播的形式发送BRP帧，则STA需要将自身的组标识与BRP帧中的组标识进行匹配，若匹配一致，则继续接收并测量BRP帧后面附带的多个TRN-T域的接收信号质量。
STA根据所测量的接收信号质量生成测量结果，具体的生成方式可以有多种，例如可以是分别将STA所测量的不同TRN-T域的接收信号质量按照从优到差的顺序进行排序，并选取排序在最前的预设个数的TRN-T域作为测量结果；或者生成测量结果的生成方式也可以是将STA所测量的不同TRN-T域的接收信号质量中接收信号质量最优的目标TRN-T域或者该TRN-T域的标识目标作为测量结果。
S602，所述站点接收所述接入点发送的轮询帧，并根据所述轮询帧向所述接入点返回所述测量结果，所述测量结果用于确定所述接入点向所述站点发送数据的最优发送波束。
本发明实施例中，PCP/AP为了获取各个STA的测量结果，因此依次向各个STA发送轮询帧，STA接收到PCP/AP发送的轮询帧后，即根据该轮询帧向PCP/AP返回测量结果，该测量结果用于PCP/AP确定向该STA发送数据的最优发送波束，最优发送波束可以使得该STA接收PCP/AP发送的数据时达到最优的接收信号质量。
本发明实施例中，接入点发送BRP帧，该BRP帧后面附带多个以不同发送波束发送的发送训练域，接收该BRP帧的多个站点接收并测量该BRP帧后附带的多个不同发送波束发送的发送训练域的接收信号质量，接入点向多个站点中每个站点发送轮询帧，该轮询帧用于获取该站点对接收信号质量的测量结果，接入点根据每个站点返回的测量结果获取该站点接收信号质量最优的目标发送训练域所对应的目标发送波束，并将该目标发送波束确定为接入点向该站点 发送数据的最优发送波束。这种方式可以通过发送一次BRP帧调整接入点对于多个站点的最优发送波束，调整效率高。
请参照图7，为本发明实施例提供的又一种波束调整方法的流程示意图，若所述接入点向第一目标扇区广播发送所述BRP帧，且所述BRP帧包括所述第一目标扇区的第一标识；如图所示，本实施例的波束调整方法包括步骤S700-S703；
S700，所述站点通过扇区级扫描阶段获得所述站点所属第二目标扇区，并保存所述第二目标扇区的第二标识；
本发明实施例中，PCP/AP与STA之间进行波束成形训练时，STA可以通过波束成形训练的SLS阶段获得该STA所属第二目标扇区，STA保存该第二目标扇区的第二标识。需要说明的是，第二标识可以是由该STA所对应的发送天线标识(TX Antenna ID)和发送扇区标识(TX Sector ID)组成。
S701，站点接收接入点发送的BRP帧，所述BRP帧后面附带多个以不同发送波束发送的发送训练域；
本发明实施例步骤S701请参照图6的实施例步骤S600，在此不再赘述。
S702，所述站点将所述BRP帧中的所述第一标识与所述第二标识进行匹配，若匹配一致，则接收并测量所述不同发送波束发送的发送训练域的接收信号质量，并根据所述接收信号质量生成测量结果；
本发明实施例中，当PCP/AP以广播的形式在第一目标扇区内广播发送BRP帧，且BRP帧包括第一目标扇区的第一标识；第一标识也可以是由发送天线标识(TX Antenna ID)和发送扇区标识(TX Sector ID)组成。按照常理，PCP/AP在第一目标扇区广播发送BRP帧，则只有第一目标扇区内的STA可以接收到该BRP帧，但是也可能存在例外情况，例如，某一个STA处于第一目标扇区的边缘部分，但不属于第一目标扇区，则也可能接收到该BRP帧，因此为了能够确保PCP/AP是对第一目标扇区内的STA进行发送波束训练， 则需要将BRP帧中的第一标识与STA自身的第二标识进行匹配，若匹配一致，则接收并测量不同发送波束发送的TRN-T域的接收信号质量，并根据该接收信号质量生成测量结果。
具体可选的，STA接收到该BRP帧后，继续检查其中的BRP请求域(BRP Request field)中的TX Antenna ID和/或TX Sector ID是否与自己在SLS阶段训练得到的PCP/AP对应于自己的TX Antenna ID和/或TX Sector ID一致。若匹配一致，则继续接收附加在其后面的多个TRN-T域并测量其信道参数，然后等待PCP/AP的轮询帧；否则，扔掉该BRP帧并不再接收附加在其后面的多个TRN-T域。
需要说明的是，测量结果的存在形式可以有多种，在此不作限定。例如可以是分别将STA所测量的不同TRN-T域的接收信号质量按照从优到差的顺序进行排序，并选取排序在最前的预设个数的TRN-T域作为测量结果；或者可以是将STA所测量的不同TRN-T域的接收信号质量中接收信号质量最优的目标TRN-T域或者该TRN-T域的标识目标作为测量结果。
S703，所述站点接收所述接入点发送的轮询帧，并根据所述轮询帧向所述接入点返回所述测量结果，所述测量结果用于确定所述接入点向所述站点发送数据的最优发送波束。
本发明实施例步骤S703请参照图6的实施例步骤S602，在此不再赘述。
本发明实施例中，接入点发送BRP帧，该BRP帧后面附带多个以不同发送波束发送的发送训练域，接收该BRP帧的多个站点接收并测量该BRP帧后附带的多个不同发送波束发送的发送训练域的接收信号质量，接入点向多个站点中每个站点发送轮询帧，该轮询帧用于获取该站点对接收信号质量的测量结果，接入点根据每个站点返回的测量结果获取该站点接收信号质量最优的目标发送训练域所对应的目标发送波束，并将该目标发送波束确定为接入点向该站点发送数据的最优发送波束。这种方式可以通过发送一次BRP帧调整接入点对于多个站点的最优发送波束，调整效率高。
请参照图8，为本发明实施例提供的又一种波束调整方法的流程示意图，若所述接入点组播所述BRP帧，且所述BRP帧包括接收所述BRP帧的站点所属第一组标识；如图所示，本实施例的波束调整方法包括步骤S800-S802；
S800，站点接收接入点发送的BRP帧，所述BRP帧后面附带多个以不同发送波束发送的发送训练域；
本发明实施例步骤S800请参照图6的实施例步骤S600，在此不再赘述。
S801，所述站点将自身的第二组标识与所述BRP帧中的第一组标识进行匹配，若匹配一致，则接收并测量所述不同发送波束发送的发送训练域的接收信号质量，并根据所述接收信号质量生成测量结果；
本发明实施例中，当PCP/AP以组播的形式发送BRP帧，在该BRP帧中携带第一组标识，该第一组标识用于标识接收该BRP帧的STA，通常多个STA的组标识相同，因此采样组播的形式发送BRP帧时，可以有多个STA收到该BRP帧。组标识可以是组播MAC地址。在BRP帧中标识为进行发送波束调整的训练，并在BRP帧后面附加多个TRN-T域。
STA接收到BRP帧后，将自身的第二组标识与BRP帧中的第一组标识进行匹配，若匹配一致，则继续接收并测量该BRP帧后面附带的多个TRN-T域的接收信号质量，并根据接收信号质量生成测量结果。需要说明的是，测量结果的存在形式可以有多种，在此不作限定。例如可以是分别将STA所测量的不同TRN-T域的接收信号质量按照从优到差的顺序进行排序，并选取排序在最前的预设个数的TRN-T域作为测量结果；或者可以是将STA所测量的不同TRN-T域的接收信号质量中接收信号质量最优的目标TRN-T域或者该TRN-T域的标识目标作为测量结果。
S802，所述站点接收所述接入点发送的轮询帧，并根据所述轮询帧向所述接入点返回所述测量结果，所述测量结果用于确定所述接入点向所述站点发送数据的最优发送波束。
本发明实施例步骤S802请参照图6的实施例步骤S602，在此不再赘述。
本发明实施例中，接入点发送BRP帧，该BRP帧后面附带多个以不同发送波束发送的发送训练域，接收该BRP帧的多个站点接收并测量该BRP帧后附带的多个不同发送波束发送的发送训练域的接收信号质量，接入点向多个站点中每个站点发送轮询帧，该轮询帧用于获取该站点对接收信号质量的测量结果，接入点根据每个站点返回的测量结果获取该站点接收信号质量最优的目标发送训练域所对应的目标发送波束，并将该目标发送波束确定为接入点向该站点发送数据的最优发送波束。这种方式可以通过发送一次BRP帧调整接入点对于多个站点的最优发送波束，调整效率高。
请参照图9，为本发明实施例提供的一种波束调整装置的结构示意图，本实施例的波束调整装置应用于接入点；如图所示，所述波束调整装置包括：
收发模块100，用于发送BRP帧，所述BRP帧后面附带多个以不同发送波束发送的发送训练域，以使接收所述BRP帧的多个站点接收并测量所述不同发送波束发送的发送训练域的接收信号质量；
本发明实施例中，PCP/AP的收发模块100可以发送一个BRP帧给多个STA，在BRP帧中标识为进行发送波束调整的训练，该BRP帧后面附带多个TRN-T域，TRN-T域为非常长用于进行波束训练的的序列，一个TRN-T域对应一个序列。PCP/AP根据要训练的发送波束的数量，附加相同数量的TRN-T域在BRP帧后面。每个TRN-T域以不同的要训练的发送波束发送，这些波束一般是基于SLS阶段的天线训练结果进行选取的。
接收到该BRP帧的多个STA中的每个STA继续接收附加在BRP帧后面的多个TRN-T域并测量其信道参数，由于附加在BRP帧后面的多个TRN-T域以不同的发送波束进行发送，且各个STA与PCP/AP之间的相对位置不同，因此每个STA在测量接收同一个TRN-T域时所测得的接收信号质量不同。
可选的，所述收发模块100发送BRP帧具体包括：
所述收发模块100向目标扇区广播BRP帧，所述目标扇区包括多个站点， 所述BRP帧包括广播MAC地址。
本发明实施例中，PCP/AP的收发模块100可以是以广播的形式向目标扇区广播BRP帧，目标扇区包括多个STA，BRP帧的目的地址为广播媒体访问控制(Media Access Control，MAC)地址，因此在目标扇区内的STA均可以收到该BRP帧。BRP帧中标识为进行发送波束调整的训练，该BRP帧后面附带多个不同发送波束发送的TRN-T域，TRN-T域的数量与需要进行训练的发送波束的数量一一对应，即是一个TRN-T域以一种发送波束发送。需要训练的发送波束是根据SLS阶段的天线训练结果所选取的。
可选的，所述收发模块100发送BRP帧具体包括：
所述收发模块100组播BRP帧，所述BRP帧携带组标识，所述组标识用于标识接收所述BRP帧的多个站点。
本发明实施例中，PCP/AP的收发模块100可以是以组播的形式发送BRP帧，该BRP帧中携带组标识，该组标识用于标识接收该BRP帧的多个站点，例如组标识可以是组播MAC地址或者组标识(Group ID)。BRP帧中标识为进行发送波束调整的训练，该BRP帧后面附带多个不同发送波束发送的TRN-T域，TRN-T域的数量与需要进行训练的发送波束的数量一一对应，即是一个TRN-T域以一种发送波束发送。需要训练的发送波束是根据SLS阶段的天线训练结果所选取的。
所述收发模块100还用于向所述多个站点中的每个站点发送轮询帧，所述轮询帧用于获取该站点对接收信号质量的测量结果；
本发明实施例中，多个STA中的每个STA在测量接收不同发送波束发送的TRN-T域的接收信号质量之后，等待PCP/AP的轮询。PCP/AP收发模块100向接收BRP帧的多个站点中的每个站点依次发送轮询帧。可选的，PCP/AP发送轮询帧的方式可以是，PCP/AP向某一个STA发送轮询帧后，等待一段特定长度的时间，若在该时段内，PCP/AP收到该STA回复的BRP帧，则PCP/AP立即向下一个STA发送轮询帧。若在该时段内，PCP/AP未收到该STA回复 的BRP帧，则在该时段结束后向下一个STA发送轮询帧。
具体可选的，如图5所示，即是本发明提供的一种PCP/AP与STA之间交互的示意图；如图所示，PCP/AP发送BRP帧，该BRP帧后面附带多个TRN-T域，STA1、STA2以及STA3分别可以接收到该BRP帧，等待一段时间后，PCP/AP向STA1发送第一轮询帧，STA1收到第一轮询帧后，向PCP/AP回复BRP帧，其中携带STA1所测量的接收信号质量的测量结果；PCP/AP当接收到STA1返回的BRP帧后，立即向STA2发送第二轮询帧，STA2收到第二轮询帧后，向PCP/AP回复BRP帧，其中携带STA2所测量的接收信号质量的测量结果；PCP/AP当接收到STA2返回的BRP帧后，立即向STA3发送第三轮询帧，STA3收到第三轮询帧后，向PCP/AP回复BRP帧，其中携带STA3所测量的接收信号质量的测量结果。
需要说明的是，PCP/AP用定向天线(例如，天线只朝向某一个或几个相邻的目标扇区)发送BRP帧，因此只有该目标扇区内的STA能够接收到该BRP帧。PCP/AP在SLS阶段可以获知哪些STA对应于自己的哪个扇区，因此PCP/AP知道要向哪些STA发送轮询帧。
PCP/AP向STA发送轮询帧的目的在于获取该STA对接收信号质量的测量结果，可选的，测量结果可以是该STA测量的接收不同发送波束发送的TRN-T域的接收信号质量中信号质量最优的目标发送训练域或者该目标发送训练域的标识，也可以是该STA测量的接收不同发送波束发送的TRN-T域的接收信号质量中信号质量最优的几个TRN-T域(例如，根据信号质量进行排序，排序在最前的几个TRN-T域)，测量结果在此不作限定。
可选的，所述收发模块100还用于通过扇区级扫描阶段获得目标扇区内的所述多个站点中每个站点的站点标识；
本发明实施例中，目标扇区可以为定向天线的某一个扇区或者为定向天线的某几个相邻扇区。PCP/AP收发模块100在SLS阶段与目标扇区内的STA进行波束成形训练时，可以获得目标扇区内的多个站点中每个站点的站点信 息，站点信息可以为该站点的站点标识。
所述收发模块100向所述多个站点中的每个站点发送轮询帧具体包括：
所述收发模块100根据所述多个站点中每个站点的站点标识，向所述站点标识所标识的站点发送轮询帧。
本发明实施例中，由于PCP/AP是向目标扇区广播发送BRP帧，因此目标扇区内的所有STA均可以接收到该BRP帧，后续PCP/AP收发模块100需要一一向目标扇区内的STA发送轮询帧，由于在SLS阶段的天线训练结果中，PCP/AP可以获知每一个扇区内的STA的站点标识，因此在波束调整步骤中，PCP/AP可以依次向所获知的每个站点标识所标识的STA发送轮询帧。可选的，具体发送轮询帧的方式可以是，PCP/AP向某一个STA发送轮询帧后，等待一段特定长度的时间。若在该时段内，PCP/AP收到该STA回复的BRP帧，则PCP/AP立即向下一个STA发送轮询帧。若在该时段内，PCP/AP未收到该STA回复的BRP帧，则在该时段结束后向下一个STA发送轮询帧。
可选的，所述收发模块100向所述多个站点中的每个站点发送轮询帧具体包括：
所述收发模块向所述BRP帧中所携带的所述组标识所标识的站点发送轮询帧。
本发明实施例中，PCP/AP收发模块100向BRP帧中所携带的组标识所标识的STA发送轮询帧，通常多个STA拥有同一个组标识。可选的，具体发送轮询帧的方式可以是，PCP/AP向某一个STA发送轮询帧后，等待一段特定长度的时间。若在该时段内，PCP/AP收到该STA回复的BRP帧，则PCP/AP立即向下一个STA发送轮询帧。若在该时段内，PCP/AP未收到该STA回复的BRP帧，则在该时段结束后向下一个STA发送轮询帧。
处理模块101，用于根据所述每个站点返回的所述测量结果获取该站点接收信号质量最优的目标发送训练域所对应的目标发送波束，并将所述目标发送波束确定为所述接入点向所述站点发送数据的最优发送波束。
本发明实施例中，STA接收到PCP/AP发送的轮询帧后，回复BRP帧，BRP帧中携带测量结果，例如若测量结果为接收信号质量最好的目标TRN-T域，则在BRP帧中标识出目标TRN-T域。
无论测量结果以何种形式存在，PCP/AP处理模块101均根据每个STA返回的测量结果获取该站点接收信号质量最优的目标TRN-T域所对应的目标发送波束，目标TRN-T域所对应的目标发送波束即是在PCP/AP发送BRP帧时，以该目标发送波束发送该目标TRN-T域。PCP/AP将目标发送波束确定为PCP/AP向该STA发送数据的最优发送波束。需要说明的是，若未找到最优发送波束，则PCP/AP采用其它发送波束发送多个TRN-T域，并重复上述过程。
本发明实施例中，接入点发送BRP帧，该BRP帧后面附带多个以不同发送波束发送的发送训练域，接收该BRP帧的多个站点接收并测量该BRP帧后附带的多个不同发送波束发送的发送训练域的接收信号质量，接入点向多个站点中每个站点发送轮询帧，该轮询帧用于获取该站点对接收信号质量的测量结果，接入点根据每个站点返回的测量结果获取该站点接收信号质量最优的目标发送训练域所对应的目标发送波束，并将该目标发送波束确定为接入点向该站点发送数据的最优发送波束。这种方式可以通过发送一次BRP帧调整接入点对于多个站点的最优发送波束，调整效率高。
请参照图10，为本发明实施例提供的另一种波束调整装置的结构示意图，本实施例的波束调整装置应用于接入点。图10的实施例中，接入点20包括天线200、发射机201、接收机202、处理器203和存储器204。处理器203控制接入点20的操作，并可用于处理信号。存储器204可以包括只读存储器和随机存取存储器，并向处理器203提供指令和数据。发射机201和接收机202可以耦合到天线200，接入点20的各个组件通过总线系统205耦合在一起，其中总线系统205除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图中将各种总线都标为总线系统205。
具体地，存储器204可存储执行以下过程的指令：
接入点发送BRP帧，所述BRP帧后面附带多个以不同发送波束发送的发送训练域，以使接收所述BRP帧的多个站点接收并测量所述不同发送波束发送的发送训练域的接收信号质量；
所述接入点向所述多个站点中的每个站点发送轮询帧，所述轮询帧用于获取该站点对接收信号质量的测量结果；
所述接入点根据所述每个站点返回的所述测量结果获取该站点接收信号质量最优的目标发送训练域所对应的目标发送波束，并将所述目标发送波束确定为所述接入点向所述站点发送数据的最优发送波束。
可选的，PCP/AP可以发送一个BRP帧给多个STA，在BRP帧中标识为进行发送波束调整的训练，该BRP帧后面附带多个TRN-T域，TRN-T域为非常长用于进行波束训练的的序列，一个TRN-T域对应一个序列。PCP/AP根据要训练的发送波束的数量，附加相同数量的TRN-T域在BRP帧后面。每个TRN-T域以不同的要训练的发送波束发送，这些波束一般是基于SLS阶段的天线训练结果进行选取的。
接收到该BRP帧的多个STA中的每个STA继续接收附加在BRP帧后面的多个TRN-T域并测量其信道参数，由于附加在BRP帧后面的多个TRN-T域以不同的发送波束进行发送，且各个STA与PCP/AP之间的相对位置不同，因此每个STA在测量接收同一个TRN-T域时所测得的接收信号质量不同。
可选的，多个STA中的每个STA在测量接收不同发送波束发送的TRN-T域的接收信号质量之后，等待PCP/AP的轮询。PCP/AP向接收BRP帧的多个站点中的每个站点依次发送轮询帧。可选的，PCP/AP发送轮询帧的方式可以是，PCP/AP向某一个STA发送轮询帧后，等待一段特定长度的时间，若在该时段内，PCP/AP收到该STA回复的BRP帧，则PCP/AP立即向下一个STA发送轮询帧。若在该时段内，PCP/AP未收到该STA回复的BRP帧，则在该时段结束后向下一个STA发送轮询帧。
具体可选的，如图5所示，即是本发明提供的一种PCP/AP与STA之间交互的示意图；如图所示，PCP/AP发送BRP帧，该BRP帧后面附带多个TRN-T域，STA1、STA2以及STA3分别可以接收到该BRP帧，等待一段时间后，PCP/AP向STA1发送第一轮询帧，STA1收到第一轮询帧后，向PCP/AP回复BRP帧，其中携带STA1所测量的接收信号质量的测量结果；PCP/AP当接收到STA1返回的BRP帧后，立即向STA2发送第二轮询帧，STA2收到第二轮询帧后，向PCP/AP回复BRP帧，其中携带STA2所测量的接收信号质量的测量结果；PCP/AP当接收到STA2返回的BRP帧后，立即向STA3发送第三轮询帧，STA3收到第三轮询帧后，向PCP/AP回复BRP帧，其中携带STA3所测量的接收信号质量的测量结果。
需要说明的是，PCP/AP用定向天线(例如，天线只朝向某一个或几个相邻的目标扇区)发送BRP帧，因此只有该目标扇区内的STA能够接收到该BRP帧。PCP/AP在SLS阶段可以获知哪些STA对应于自己的哪个扇区，因此PCP/AP知道要向哪些STA发送轮询帧。
PCP/AP向STA发送轮询帧的目的在于获取该STA对接收信号质量的测量结果，可选的，测量结果可以是该STA测量的接收不同发送波束发送的TRN-T域的接收信号质量中信号质量最优的目标发送训练域或者该目标发送训练域的标识，也可以是该STA测量的接收不同发送波束发送的TRN-T域的接收信号质量中信号质量最优的几个TRN-T域(例如，根据信号质量进行排序，排序在最前的几个TRN-T域)，测量结果在此不作限定。
可选的，STA接收到PCP/AP发送的轮询帧后，回复BRP帧，BRP帧中携带测量结果，例如若测量结果为接收信号质量最好的目标TRN-T域，则在BRP帧中标识出目标TRN-T域。
无论测量结果以何种形式存在，PCP/AP均根据每个STA返回的测量结果获取该站点接收信号质量最优的目标TRN-T域所对应的目标发送波束，目标TRN-T域所对应的目标发送波束即是在PCP/AP发送BRP帧时，以该目标发 送波束发送该目标TRN-T域。PCP/AP将目标发送波束确定为PCP/AP向该STA发送数据的最优发送波束。需要说明的是，若未找到最优发送波束，则PCP/AP采用其它发送波束发送多个TRN-T域，并重复上述过程。
进一步的，所述接入点发送BRP帧，包括：
所述接入点向目标扇区广播BRP帧，所述目标扇区包括多个站点，所述BRP帧包括广播MAC地址。
可选的，PCP/AP可以是以广播的形式向目标扇区广播BRP帧，目标扇区包括多个STA，BRP帧的目的地址为广播媒体访问控制(Media Access Control，MAC)地址，因此在目标扇区内的STA均可以收到该BRP帧。BRP帧中标识为进行发送波束调整的训练，该BRP帧后面附带多个不同发送波束发送的TRN-T域，TRN-T域的数量与需要进行训练的发送波束的数量一一对应，即是一个TRN-T域以一种发送波束发送。需要训练的发送波束是根据SLS阶段的天线训练结果所选取的。
基于上述实施例，所述接入点向目标扇区广播BRP帧之前，还包括：
所述接入点通过扇区级扫描阶段获得目标扇区内的所述多个站点中每个站点的站点标识；
可选的，所述接入点向所述多个站点中的每个站点发送轮询帧，包括：
所述接入点根据所述多个站点中每个站点的站点标识，向所述站点标识所标识的站点发送轮询帧。
可选的，目标扇区可以为定向天线的某一个扇区或者为定向天线的某几个相邻扇区。PCP/AP在SLS阶段与目标扇区内的STA进行波束成形训练时，可以获得目标扇区内的多个站点中每个站点的站点信息，站点信息可以为该站点的站点标识。
可选的，由于PCP/AP是向目标扇区广播发送BRP帧，因此目标扇区内的所有STA均可以接收到该BRP帧，后续PCP/AP需要一一向目标扇区内的STA发送轮询帧，由于在SLS阶段的天线训练结果中，PCP/AP可以获知每一 个扇区内的STA的站点标识，因此在波束调整步骤中，PCP/AP可以依次向所获知的每个站点标识所标识的STA发送轮询帧。可选的，具体发送轮询帧的方式可以是，PCP/AP向某一个STA发送轮询帧后，等待一段特定长度的时间。若在该时段内，PCP/AP收到该STA回复的BRP帧，则PCP/AP立即向下一个STA发送轮询帧。若在该时段内，PCP/AP未收到该STA回复的BRP帧，则在该时段结束后向下一个STA发送轮询帧。
进一步的，作为另一实施例，所述接入点发送BRP帧，包括：
所述接入点组播BRP帧，所述BRP帧携带组标识，所述组标识用于标识接收所述BRP帧的多个站点。
可选的，PCP/AP可以是以组播的形式发送BRP帧，该BRP帧中携带组标识，该组标识用于标识接收该BRP帧的多个站点，例如组标识可以是组播MAC地址或者组标识(Group ID)。BRP帧中标识为进行发送波束调整的训练，该BRP帧后面附带多个不同发送波束发送的TRN-T域，TRN-T域的数量与需要进行训练的发送波束的数量一一对应，即是一个TRN-T域以一种发送波束发送。需要训练的发送波束是根据SLS阶段的天线训练结果所选取的。
基于上述实施例，所述接入点向所述多个站点中的每个站点发送轮询帧，包括：
所述接入点向所述BRP帧中所携带的所述组标识所标识的站点发送轮询帧。
可选的，PCP/AP向BRP帧中所携带的组标识所标识的STA发送轮询帧，通常多个STA拥有同一个组标识。可选的，具体发送轮询帧的方式可以是，PCP/AP向某一个STA发送轮询帧后，等待一段特定长度的时间。若在该时段内，PCP/AP收到该STA回复的BRP帧，则PCP/AP立即向下一个STA发送轮询帧。若在该时段内，PCP/AP未收到该STA回复的BRP帧，则在该时段结束后向下一个STA发送轮询帧。
本发明实施例中，接入点发送BRP帧，该BRP帧后面附带多个以不同发送 波束发送的发送训练域，接收该BRP帧的多个站点接收并测量该BRP帧后附带的多个不同发送波束发送的发送训练域的接收信号质量，接入点向多个站点中每个站点发送轮询帧，该轮询帧用于获取该站点对接收信号质量的测量结果，接入点根据每个站点返回的测量结果获取该站点接收信号质量最优的目标发送训练域所对应的目标发送波束，并将该目标发送波束确定为接入点向该站点发送数据的最优发送波束。这种方式可以通过发送一次BRP帧调整接入点对于多个站点的最优发送波束，调整效率高。
请参照图11，为本发明实施例提供的又一种波束调整装置的结构示意图，本实施例的波束调整装置应用于站点；如图所示，所述波束调整装置包括：
收发模块300，用于接收接入点发送的BRP帧，所述BRP帧后面附带多个以不同发送波束发送的发送训练域；
本发明实施例中，若PCP/AP以广播的形式向目标扇区广播发送BRP帧，则在目标扇区内的STA可以接收到该BRP帧；若PCP/AP以组播的形式发送BRP帧，则组标识与BRP帧中的组标识匹配一致的STA可以接收到该BRP帧。BRP帧中标识为进行发送波束调整的训练，该BRP帧后面附带多个不同发送波束发送的TRN-T域，TRN-T域的数量与需要进行训练的发送波束的数量一一对应，即是一个TRN-T域以一种发送波束发送。需要训练的发送波束是根据SLS阶段的天线训练结果所选取的。
处理模块301，用于根据所述BRP帧，接收并测量所述不同发送波束发送的发送训练域的接收信号质量，并根据所述接收信号质量生成测量结果；
本发明实施例中，STA接收到BRP帧后，处理模块301对BRP帧进行判断分析以确定是否继续接收并测量BRP帧后面附带的多个TRN-T域的接收信号质量，可选的，确定方式需要根据PCP/AP发送BRP帧的方式进行确定，例如，若PCP/AP以组播的形式发送BRP帧，则STA需要将自身的组标识与BRP帧中的组标识进行匹配，若匹配一致，则继续接收并测量BRP帧后面附 带的多个TRN-T域的接收信号质量。
STA根据所测量的接收信号质量生成测量结果，具体的生成方式可以有多种，例如可以是分别将STA所测量的不同TRN-T域的接收信号质量按照从优到差的顺序进行排序，并选取排序在最前的预设个数的TRN-T域作为测量结果；或者生成测量结果的生成方式也可以是将STA所测量的不同TRN-T域的接收信号质量中接收信号质量最优的目标TRN-T域或者该TRN-T域的标识目标作为测量结果。
可选的，若所述接入点向第一目标扇区广播发送所述BRP帧，且所述BRP帧包括所述第一目标扇区的第一标识；
所述收发模块300还用于通过扇区级扫描阶段获得所述站点所属第二目标扇区，并保存所述第二目标扇区的第二标识；
本发明实施例中，PCP/AP与STA之间进行波束成形训练时，STA收发模块300可以通过波束成形训练的SLS阶段获得该STA所属第二目标扇区，STA保存该第二目标扇区的第二标识。需要说明的是，第二标识可以是由该STA所对应的发送天线标识(TX Antenna ID)和发送扇区标识(TX Sector ID)组成。
所述处理模块根据所述BRP帧，接收并测量接收所述不同发送波束发送的发送训练域的接收信号质量具体包括：
所述处理模块301将所述BRP帧中的所述第一标识与所述第二标识进行匹配，若匹配一致，则接收并测量所述不同发送波束发送的发送训练域的接收信号质量。
本发明实施例中，当PCP/AP以广播的形式在第一目标扇区内广播发送BRP帧，且BRP帧包括第一目标扇区的第一标识；第一标识也可以是由发送天线标识(TX Antenna ID)和发送扇区标识(TX Sector ID)组成。按照常理，PCP/AP在第一目标扇区广播发送BRP帧，则只有第一目标扇区内的STA可以接收到该BRP帧，但是也可能存在例外情况，例如，某一个STA处于第一 目标扇区的边缘部分，但不属于第一目标扇区，则也可能接收到该BRP帧，因此为了能够确保PCP/AP是对第一目标扇区内的STA进行发送波束训练，则处理模块301需要将BRP帧中的第一标识与STA自身的第二标识进行匹配，若匹配一致，则接收并测量不同发送波束发送的TRN-T域的接收信号质量，并根据该接收信号质量生成测量结果。
具体可选的，STA接收到该BRP帧后，继续检查其中的BRP请求域(BRP Request field)中的TX Antenna ID和/或TX Sector ID是否与自己在SLS阶段训练得到的PCP/AP对应于自己的TX Antenna ID和/或TX Sector ID一致。若匹配一致，则继续接收附加在其后面的多个TRN-T域并测量其信道参数，然后等待PCP/AP的轮询帧；否则，扔掉该BRP帧并不再接收附加在其后面的多个TRN-T域。
需要说明的是，测量结果的存在形式可以有多种，在此不作限定。例如可以是分别将STA所测量的不同TRN-T域的接收信号质量按照从优到差的顺序进行排序，并选取排序在最前的预设个数的TRN-T域作为测量结果；或者可以是将STA所测量的不同TRN-T域的接收信号质量中接收信号质量最优的目标TRN-T域或者该TRN-T域的标识目标作为测量结果。
可选的，若所述接入点组播所述BRP帧，且所述BRP帧包括接收所述BRP帧的站点所属第一组标识；
所述处理模块301根据所述BRP帧，接收并测量所述不同发送波束发送的发送训练域的接收信号质量具体包括；
所述处理模块301将自身的第二组标识与所述BRP帧中的第一组标识进行匹配，若匹配一致，则接收并测量所述不同发送波束发送的发送训练域的接收信号质量。
本发明实施例中，当PCP/AP以组播的形式发送BRP帧，在该BRP帧中携带第一组标识，该第一组标识用于标识接收该BRP帧的STA，通常多个STA的组标识相同，因此采样组播的形式发送BRP帧时，可以有多个STA收到该 BRP帧。组标识可以是组播MAC地址。在BRP帧中标识为进行发送波束调整的训练，并在BRP帧后面附加多个TRN-T域。
STA处理模块301接收到BRP帧后，将自身的第二组标识与BRP帧中的第一组标识进行匹配，若匹配一致，则继续接收并测量该BRP帧后面附带的多个TRN-T域的接收信号质量，并根据接收信号质量生成测量结果。需要说明的是，测量结果的存在形式可以有多种，在此不作限定。例如可以是分别将STA所测量的不同TRN-T域的接收信号质量按照从优到差的顺序进行排序，并选取排序在最前的预设个数的TRN-T域作为测量结果；或者可以是将STA所测量的不同TRN-T域的接收信号质量中接收信号质量最优的目标TRN-T域或者该TRN-T域的标识目标作为测量结果。
所述收发模块300还用于接收所述接入点发送的轮询帧，并根据所述轮询帧向所述接入点返回所述测量结果，所述测量结果用于确定所述接入点向所述站点发送数据的最优发送波束。
本发明实施例中，PCP/AP为了获取各个STA的测量结果，因此依次向各个STA发送轮询帧，STA接收到PCP/AP发送的轮询帧后，收发模块300即根据该轮询帧向PCP/AP返回测量结果，该测量结果用于PCP/AP确定向该STA发送数据的最优发送波束，最优发送波束可以使得该STA接收PCP/AP发送的数据时达到最优的接收信号质量。
本发明实施例中，接入点发送BRP帧，该BRP帧后面附带多个以不同发送波束发送的发送训练域，接收该BRP帧的多个站点接收并测量该BRP帧后附带的多个不同发送波束发送的发送训练域的接收信号质量，接入点向多个站点中每个站点发送轮询帧，该轮询帧用于获取该站点对接收信号质量的测量结果，接入点根据每个站点返回的测量结果获取该站点接收信号质量最优的目标发送训练域所对应的目标发送波束，并将该目标发送波束确定为接入点向该站点发送数据的最优发送波束。这种方式可以通过发送一次BRP帧调整接入点对于多个站点的最优发送波束，调整效率高。
请参照图12，为本发明实施例提供的又一种波束调整装置的结构示意图，本实施例的波束调整装置应用于站点。图12的实施例中，站点40包括天线400、发射机401、接收机402、处理器403和存储器404。处理器403控制接入点40的操作，并可用于处理信号。存储器404可以包括只读存储器和随机存取存储器，并向处理器403提供指令和数据。发射机401和接收机402可以耦合到天线400，站点40的各个组件通过总线系统405耦合在一起，其中总线系统405除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图中将各种总线都标为总线系统405。
具体地，存储器404可存储执行以下过程的指令：
站点接收接入点发送的BRP帧，所述BRP帧后面附带多个以不同发送波束发送的发送训练域；
所述站点根据所述BRP帧，接收并测量所述不同发送波束发送的发送训练域的接收信号质量，并根据所述接收信号质量生成测量结果；
所述站点接收所述接入点发送的轮询帧，并根据所述轮询帧向所述接入点返回所述测量结果，所述测量结果用于确定所述接入点向所述站点发送数据的最优发送波束。
可选的，若PCP/AP以广播的形式向目标扇区广播发送BRP帧，则在目标扇区内的STA可以接收到该BRP帧；若PCP/AP以组播的形式发送BRP帧，则组标识与BRP帧中的组标识匹配一致的STA可以接收到该BRP帧。BRP帧中标识为进行发送波束调整的训练，该BRP帧后面附带多个不同发送波束发送的TRN-T域，TRN-T域的数量与需要进行训练的发送波束的数量一一对应，即是一个TRN-T域以一种发送波束发送。需要训练的发送波束是根据SLS阶段的天线训练结果所选取的。
可选的，STA接收到BRP帧后，对BRP帧进行判断分析以确定是否继续接收并测量BRP帧后面附带的多个TRN-T域的接收信号质量，可选的，确定方式需要根据PCP/AP发送BRP帧的方式进行确定，例如，若PCP/AP以组播 的形式发送BRP帧，则STA需要将自身的组标识与BRP帧中的组标识进行匹配，若匹配一致，则继续接收并测量BRP帧后面附带的多个TRN-T域的接收信号质量。
STA根据所测量的接收信号质量生成测量结果，具体的生成方式可以有多种，例如可以是分别将STA所测量的不同TRN-T域的接收信号质量按照从优到差的顺序进行排序，并选取排序在最前的预设个数的TRN-T域作为测量结果；或者生成测量结果的生成方式也可以是将STA所测量的不同TRN-T域的接收信号质量中接收信号质量最优的目标TRN-T域或者该TRN-T域的标识目标作为测量结果。
可选的，PCP/AP为了获取各个STA的测量结果，因此依次向各个STA发送轮询帧，STA接收到PCP/AP发送的轮询帧后，即根据该轮询帧向PCP/AP返回测量结果，该测量结果用于PCP/AP确定向该STA发送数据的最优发送波束，最优发送波束可以使得该STA接收PCP/AP发送的数据时达到最优的接收信号质量。
进一步的，作为一种可选的实施方式，若所述接入点向第一目标扇区广播发送所述BRP帧，且所述BRP帧包括所述第一目标扇区的第一标识；
所述站点接收接入点发送的BRP帧之前，还包括：
所述站点通过扇区级扫描阶段获得所述站点所属第二目标扇区，并保存所述第二目标扇区的第二标识；
可选的，PCP/AP与STA之间进行波束成形训练时，STA可以通过波束成形训练的SLS阶段获得该STA所属第二目标扇区，STA保存该第二目标扇区的第二标识。需要说明的是，第二标识可以是由该STA所对应的发送天线标识(TX Antenna ID)和发送扇区标识(TX Sector ID)组成。
所述站点根据所述BRP帧，接收并测量接收所述不同发送波束发送的发送训练域的接收信号质量，包括：
所述站点将所述BRP帧中的所述第一标识与所述第二标识进行匹配，若 匹配一致，则接收并测量所述不同发送波束发送的发送训练域的接收信号质量。
可选的，当PCP/AP以广播的形式在第一目标扇区内广播发送BRP帧，且BRP帧包括第一目标扇区的第一标识；第一标识也可以是由发送天线标识(TX Antenna ID)和发送扇区标识(TX Sector ID)组成。按照常理，PCP/AP在第一目标扇区广播发送BRP帧，则只有第一目标扇区内的STA可以接收到该BRP帧，但是也可能存在例外情况，例如，某一个STA处于第一目标扇区的边缘部分，但不属于第一目标扇区，则也可能接收到该BRP帧，因此为了能够确保PCP/AP是对第一目标扇区内的STA进行发送波束训练，则需要将BRP帧中的第一标识与STA自身的第二标识进行匹配，若匹配一致，则接收并测量不同发送波束发送的TRN-T域的接收信号质量，并根据该接收信号质量生成测量结果。
具体可选的，STA接收到该BRP帧后，继续检查其中的BRP请求域(BRP Request field)中的TX Antenna ID和/或TX Sector ID是否与自己在SLS阶段训练得到的PCP/AP对应于自己的TX Antenna ID和/或TX Sector ID一致。若匹配一致，则继续接收附加在其后面的多个TRN-T域并测量其信道参数，然后等待PCP/AP的轮询帧；否则，扔掉该BRP帧并不再接收附加在其后面的多个TRN-T域。
需要说明的是，测量结果的存在形式可以有多种，在此不作限定。例如可以是分别将STA所测量的不同TRN-T域的接收信号质量按照从优到差的顺序进行排序，并选取排序在最前的预设个数的TRN-T域作为测量结果；或者可以是将STA所测量的不同TRN-T域的接收信号质量中接收信号质量最优的目标TRN-T域或者该TRN-T域的标识目标作为测量结果。
进一步的，作为另一种可选的实施方式，若所述接入点组播所述BRP帧，且所述BRP帧包括接收所述BRP帧的站点所属第一组标识；
所述站点根据所述BRP帧，接收并测量所述不同发送波束发送的发送训 练域的接收信号质量，包括；
所述站点将自身的第二组标识与所述BRP帧中的第一组标识进行匹配，若匹配一致，则接收并测量所述不同发送波束发送的发送训练域的接收信号质量。
可选的，当PCP/AP以组播的形式发送BRP帧，在该BRP帧中携带第一组标识，该第一组标识用于标识接收该BRP帧的STA，通常多个STA的组标识相同，因此采样组播的形式发送BRP帧时，可以有多个STA收到该BRP帧。组标识可以是组播MAC地址。在BRP帧中标识为进行发送波束调整的训练，并在BRP帧后面附加多个TRN-T域。
STA接收到BRP帧后，将自身的第二组标识与BRP帧中的第一组标识进行匹配，若匹配一致，则继续接收并测量该BRP帧后面附带的多个TRN-T域的接收信号质量，并根据接收信号质量生成测量结果。需要说明的是，测量结果的存在形式可以有多种，在此不作限定。例如可以是分别将STA所测量的不同TRN-T域的接收信号质量按照从优到差的顺序进行排序，并选取排序在最前的预设个数的TRN-T域作为测量结果；或者可以是将STA所测量的不同TRN-T域的接收信号质量中接收信号质量最优的目标TRN-T域或者该TRN-T域的标识目标作为测量结果。
本发明实施例中，接入点发送BRP帧，该BRP帧后面附带多个以不同发送波束发送的发送训练域，接收该BRP帧的多个站点接收并测量该BRP帧后附带的多个不同发送波束发送的发送训练域的接收信号质量，接入点向多个站点中每个站点发送轮询帧，该轮询帧用于获取该站点对接收信号质量的测量结果，接入点根据每个站点返回的测量结果获取该站点接收信号质量最优的目标发送训练域所对应的目标发送波束，并将该目标发送波束确定为接入点向该站点发送数据的最优发送波束。这种方式可以通过发送一次BRP帧调整接入点对于多个站点的最优发送波束，调整效率高。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程， 是可以通过计算机程序来指令相关的硬件来完成，所述的程序可存储于一计算机可读取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。其中，所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory，ROM)或随机存储记忆体(Random Access Memory，RAM)等。
以上所揭露的仅为本发明较佳实施例而已，当然不能以此来限定本发明之权利范围，因此依本发明权利要求所作的等同变化，仍属本发明所涵盖的范围。

Claims (20)

  1. 一种波束调整方法，其特征在于，包括：
    接入点发送波束调整协议BRP帧，所述BRP帧后面附带多个以不同发送波束发送的发送训练域，以使接收所述BRP帧的多个站点接收并测量所述不同发送波束发送的发送训练域的接收信号质量；
    所述接入点向所述多个站点中的每个站点发送轮询帧，所述轮询帧用于获取该站点对接收信号质量的测量结果；
    所述接入点根据所述每个站点返回的所述测量结果获取该站点接收信号质量最优的目标发送训练域所对应的目标发送波束，并将所述目标发送波束确定为所述接入点向所述站点发送数据的最优发送波束。
  2. 如权利要求1所述的方法，其特征在于，所述测量结果包括所述站点所测量的接收信号质量中最优接收信号质量对应的目标发送训练域。
  3. 如权利要求1所述的方法，其特征在于，所述接入点发送BRP帧，包括：
    所述接入点向目标扇区广播BRP帧，所述目标扇区包括多个站点，所述BRP帧包括广播MAC地址。
  4. 如权利要求3所述的方法，其特征在于，所述接入点向目标扇区广播BRP帧之前，还包括：
    所述接入点通过扇区级扫描阶段获得目标扇区内的所述多个站点中每个站点的站点标识；
    所述接入点向所述多个站点中的每个站点发送轮询帧，包括：
    所述接入点根据所述多个站点中每个站点的站点标识，向所述站点标识所标识的站点发送轮询帧。
  5. 如权利要求1所述的方法，其特征在于，所述接入点发送BRP帧，包括：
    所述接入点组播BRP帧，所述BRP帧携带组标识，所述组标识用于标识接收所述BRP帧的多个站点。
  6. 如权利要求5所述的方法，其特征在于，所述接入点向所述多个站点中的每个站点发送轮询帧，包括：
    所述接入点向所述BRP帧中所携带的所述组标识所标识的站点发送轮询帧。
  7. 一种波束调整方法，其特征在于，包括：
    站点接收接入点发送的BRP帧，所述BRP帧后面附带多个以不同发送波束发送的发送训练域；
    所述站点根据所述BRP帧，接收并测量所述不同发送波束发送的发送训练域的接收信号质量，并根据所述接收信号质量生成测量结果；
    所述站点接收所述接入点发送的轮询帧，并根据所述轮询帧向所述接入点返回所述测量结果，所述测量结果用于确定所述接入点向所述站点发送数据的最优发送波束。
  8. 如权利要求7所述的方法，其特征在于，所述测量结果包括所述站点所测量的接收信号质量中最优接收信号质量所对应的目标发送训练域。
  9. 如权利要求7所述的方法，其特征在于，若所述接入点向第一目标扇区广播发送所述BRP帧，且所述BRP帧包括所述第一目标扇区的第一标识；
    所述站点接收接入点发送的BRP帧之前，还包括：
    所述站点通过扇区级扫描阶段获得所述站点所属第二目标扇区，并保存所述第二目标扇区的第二标识；
    所述站点根据所述BRP帧，接收并测量接收所述不同发送波束发送的发送训练域的接收信号质量，包括：
    所述站点将所述BRP帧中的所述第一标识与所述第二标识进行匹配，若匹配一致，则接收并测量所述不同发送波束发送的发送训练域的接收信号质量。
  10. 如权利要求7所述的方法，其特征在于，若所述接入点组播所述BRP帧，且所述BRP帧包括接收所述BRP帧的站点所属第一组标识；
    所述站点根据所述BRP帧，接收并测量所述不同发送波束发送的发送训练域的接收信号质量，包括；
    所述站点将自身的第二组标识与所述BRP帧中的第一组标识进行匹配，若匹配一致，则接收并测量所述不同发送波束发送的发送训练域的接收信号质量。
  11. 一种波束调整装置，应用于接入点，其特征在于，包括：
    收发模块，用于发送BRP帧，所述BRP帧后面附带多个以不同发送波束发送的发送训练域，以使接收所述BRP帧的多个站点接收并测量所述不同发送波束发送的发送训练域的接收信号质量；
    所述收发模块还用于向所述多个站点中的每个站点发送轮询帧，所述轮询帧用于获取该站点对接收信号质量的测量结果；
    处理模块，用于根据所述每个站点返回的所述测量结果获取该站点接收信号质量最优的目标发送训练域所对应的目标发送波束，并将所述目标发送波束确定为所述接入点向所述站点发送数据的最优发送波束。
  12. 如权利要求11所述的装置，其特征在于，所述测量结果包括所述站点所测量的接收信号质量中最优接收信号质量对应的目标发送训练域。
  13. 如权利要求11所述的装置，其特征在于，所述收发模块发送BRP帧具体包括：
    所述收发模块向目标扇区广播BRP帧，所述目标扇区包括多个站点，所述BRP帧包括广播MAC地址。
  14. 如权利要求13所述的装置，其特征在于，所述收发模块还用于通过扇区级扫描阶段获得目标扇区内的所述多个站点中每个站点的站点标识；
    所述收发模块向所述多个站点中的每个站点发送轮询帧具体包括：
    所述收发模块根据所述多个站点中每个站点的站点标识，向所述站点标识 所标识的站点发送轮询帧。
  15. 如权利要求11所述的装置，其特征在于，所述收发模块发送BRP帧具体包括：
    所述收发模块组播BRP帧，所述BRP帧携带组标识，所述组标识用于标识接收所述BRP帧的多个站点。
  16. 如权利要求15所述的装置，其特征在于，所述收发模块向所述多个站点中的每个站点发送轮询帧具体包括：
    所述收发模块向所述BRP帧中所携带的所述组标识所标识的站点发送轮询帧。
  17. 一种波束调整装置，应用于站点，其特征在于，包括：
    收发模块，用于接收接入点发送的BRP帧，所述BRP帧后面附带多个以不同发送波束发送的发送训练域；
    处理模块，用于根据所述BRP帧，接收并测量所述不同发送波束发送的发送训练域的接收信号质量，并根据所述接收信号质量生成测量结果；
    所述收发模块还用于接收所述接入点发送的轮询帧，并根据所述轮询帧向所述接入点返回所述测量结果，所述测量结果用于确定所述接入点向所述站点发送数据的最优发送波束。
  18. 如权利要求17所述的装置，其特征在于，所述测量结果包括所述站点所测量的接收信号质量中最优接收信号质量所对应的目标发送训练域。
  19. 如权利要求17所述的装置，其特征在于，若所述接入点向第一目标扇区广播发送所述BRP帧，且所述BRP帧包括所述第一目标扇区的第一标识；
    所述收发模块还用于通过扇区级扫描阶段获得所述站点所属第二目标扇区，并保存所述第二目标扇区的第二标识；
    所述处理模块根据所述BRP帧，接收并测量接收所述不同发送波束发送的发送训练域的接收信号质量具体包括：
    所述处理模块将所述BRP帧中的所述第一标识与所述第二标识进行匹 配，若匹配一致，则接收并测量所述不同发送波束发送的发送训练域的接收信号质量。
  20. 如权利要求17所述的装置，其特征在于，若所述接入点组播所述BRP帧，且所述BRP帧包括接收所述BRP帧的站点所属第一组标识；
    所述处理模块根据所述BRP帧，接收并测量所述不同发送波束发送的发送训练域的接收信号质量具体包括；
    所述处理模块将自身的第二组标识与所述BRP帧中的第一组标识进行匹配，若匹配一致，则接收并测量所述不同发送波束发送的发送训练域的接收信号质量。
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