WO2017015967A1 - Procédé d'apprentissage de formation de faisceau, station et point d'accès - Google Patents

Procédé d'apprentissage de formation de faisceau, station et point d'accès Download PDF

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Publication number
WO2017015967A1
WO2017015967A1 PCT/CN2015/085624 CN2015085624W WO2017015967A1 WO 2017015967 A1 WO2017015967 A1 WO 2017015967A1 CN 2015085624 W CN2015085624 W CN 2015085624W WO 2017015967 A1 WO2017015967 A1 WO 2017015967A1
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Prior art keywords
antenna
target
access point
sector
identifier
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PCT/CN2015/085624
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English (en)
Chinese (zh)
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赵牧
颜敏
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华为技术有限公司
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Priority to PCT/CN2015/085624 priority Critical patent/WO2017015967A1/fr
Publication of WO2017015967A1 publication Critical patent/WO2017015967A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas

Definitions

  • the present invention relates to the field of wireless network technologies, and in particular, to a beamforming training method, a station, and an access point.
  • IEEE 802.11ad is a technical protocol for standardizing Wireless Local Area Network (WLAN) devices operating in the 60 GHz band.
  • WLAN Wireless Local Area Network
  • 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 it usually consists of one access point and multiple sites.
  • beamforming training BF training
  • the beamforming training is used to find a transmitting antenna mode and a receiving antenna mode suitable for the access point and the station, and then the antenna mode is used for data communication.
  • the access point and the station there is only one communication link between the access point and the station for data communication, that is, the data communication is performed between the access point and the station by establishing a single data stream (access point and There is a single-input and single-output relationship between the stations. Therefore, when performing beamforming training between the access point and the station, it is only necessary to find a transmitting antenna mode and a receiving antenna mode between the access point and the station. That is, it is to find a correspondence between a pair of transmitting antennas and receiving antennas between the access point and the station.
  • the IEEE802.11ay protocol is also a technical protocol for regulating WLAN devices operating in the 60 GHz band. It is an evolution protocol for the 802.11ad protocol. Similarly, it supports the IEEE 802.11ay protocol.
  • the network also includes an access point and multiple sites. The access point and the station also need to pass beamforming training to find the transmit antenna mode and the receive antenna mode suitable for each other, and then use the antenna mode for data communication.
  • the IEEE 802.11ay protocol differs from IEEE 802.11ad in that in the IEEE 802.11ay protocol, data communication between an access point and a station can be communicated using Multiple-Input Multiple-Output (MIMO) technology.
  • MIMO Multiple-Input Multiple-Output
  • multiple transmitting antennas and receiving antennas can be used for data transmission and reception at the same time between the access point and the station. At least two communication links can be established between such an access point and a site to form a plurality of independent data streams for data communication. Due to prior art In the beamforming training, only one transmitting antenna mode and one receiving antenna mode between the access point and the station can be selected, so that it is no longer suitable for the beamforming training of the MIMO communication method of the IEEE802.11ay protocol.
  • the embodiment of the invention provides a beamforming training method and device, which can implement antenna mode selection corresponding to multiple communication links between an access point and a station.
  • a first aspect of the present invention provides a beamforming training method, including:
  • the station uses multiple receiving antennas to simultaneously receive multiple beacon frames sequentially transmitted by the access point, and one of the beacon frames corresponds to one sector of one transmitting antenna of the access point;
  • the frame carries the transmit antenna identifier and the sector identifier corresponding to the beacon frame;
  • the station measures a received signal quality of each of the plurality of receiving antennas to receive the beacon frame, and determines a plurality of receiving antennas of the station and the access point according to the received signal quality At least two communication links between the plurality of transmit antennas and each of the communication links corresponding to a target transmit antenna of the access point and a target sector of the target transmit antenna; a corresponding communication link
  • the antenna and the receiving antenna are different;
  • the station returns the target transmit antenna identity and the target sector identity to the access point.
  • the station determines, according to the received signal quality, multiple receiving antennas of the station and multiple transmitting antennas of the access point.
  • At least two communication links between each and each of the communication links corresponding to the target transmit antenna of the access point and the target sector of the target transmit antenna include:
  • the determining, according to each of the comparison values, determining a plurality of receiving antennas of the station and the access point At least two communication links between the plurality of transmit antennas, and each of the communication links corresponding to the target transmit antenna of the access point and the target sector of the target transmit antenna including:
  • the preset communication link establishment condition is that the received signal quality of the receive antenna to the beacon frame meets a preset threshold, and the transmit antenna of the access point corresponding to different communication links and the receive antenna of the station are different. .
  • the station returns the target transmit antenna identifier and the target sector identifier to the access point, including:
  • the station returns a data frame or a sector scan frame to the access point, the data frame or sector scan frame carrying the target transmit antenna identifier and the target sector identifier.
  • the data frame or the sector scan frame further includes a received signal quality of the beacon frame corresponding to the target sector. .
  • a second aspect of the present invention provides a beamforming training method, including:
  • the access point sequentially transmits a beacon frame from each sector of the multiple transmit antennas, where the beacon frame carries the transmit antenna identifier, the sector identifier, and the access point corresponding to the beacon frame. Transmitting an antenna number; measuring a received signal quality of each of the beacon frames by triggering a station that receives the beacon frame by using a plurality of receiving antennas, and determining at least two communication links and each communication chain according to the received signal quality
  • the access point acquires the target transmit antenna identifier and the target sector identifier returned by the station.
  • the access point uses the target sector of the target transmit antenna to perform data communication with the site; or
  • the access point performs beam adjustment between the target sector of the target transmit antenna and a receive antenna corresponding to the station.
  • the beacon frame includes, to identify whether the access point supports simultaneous establishment of multiple communications a domain of multiple input multiple output MIMO of the link and a domain for identifying MIMO capabilities of the access point;
  • the domain for identifying the MIMO capability of the access point includes at least one of the following:
  • the maximum number of channels included in the channel binding whether the power saving mode is supported, whether the short guard interval is supported, whether the long guard interval is supported, whether the transmit diversity is supported, whether the receive diversity is supported, whether the transmit polarization is supported, whether the receive polarization is supported, whether Supports transmission of MIMO signals, support for receiving MIMO signals, and support for mobility.
  • a third aspect of the present invention provides a site, including:
  • the transceiver unit is configured to receive, in the beamforming training, a plurality of beacon frames that are sequentially sent by the access point by using multiple receiving antennas, where the one beacon frame corresponds to one sector of one transmitting antenna of the access point
  • the beacon frame carries a transmit antenna identifier and a sector identifier corresponding to the beacon frame;
  • a processing unit configured to measure a received signal quality of each of the plurality of receiving antennas to receive the beacon frame, and determine, according to the received signal quality, multiple receiving antennas of the station and the access At least two communication links between the plurality of transmit antennas of the point and each of the communication links corresponding to a target transmit antenna of the access point and a target sector of the target transmit antenna; corresponding to different communication links
  • the transmitting antenna and the receiving antenna are different;
  • the transceiver unit is further configured to return the target transmit antenna identifier and the target sector identifier to the access point.
  • the processing unit determines, according to the received signal quality, multiple receiving antennas of the station and multiple transmitting antennas of the access point
  • the at least two communication links between each of the communication links and the target transmit antenna of the access point and the target transmit antenna of the target transmit antenna include:
  • the processing unit acquires, for each of the beacon frames, a comparison value between received signal qualities of the received beacon frame measured by each of the receiving antennas;
  • the processing unit determines, according to each of the comparison values, at least two communication links between the plurality of receiving antennas of the station and the plurality of transmitting antennas of the access point, and each of the communication links corresponds to a target transmit antenna of the access point and a target sector of the target transmit antenna.
  • the processing unit determines, according to each of the comparison values, at least two communication links between the plurality of receiving antennas of the station and the plurality of transmitting antennas of the access point, and each of the communication links Corresponding to the target transmitting antenna of the access point and the target sector of the target transmitting antenna, specifically:
  • the processing unit determines, according to the size of each of the comparison values and a preset communication link establishment condition, at least two communication links between the station and the access point, and the communication link corresponds to the Determining a target transmit antenna of the access point and a target sector of the target transmit antenna;
  • the preset communication link establishment condition is that the received signal quality of the receive antenna to the beacon frame meets a preset threshold, and the transmit antenna of the access point corresponding to different communication links and the receive antenna of the station are different. .
  • the transceiver unit returns the target transmit antenna identifier and the target sector identifier to the access point, specifically:
  • the transceiver unit returns a data frame or a sector scan frame to the access point, where the data frame or sector scan frame carries the target transmit antenna identifier and the target sector identifier.
  • the data frame or the sector scan frame further includes a received signal of the beacon frame corresponding to the target sector. quality.
  • a fourth aspect of the present invention provides an access point, including:
  • a transceiver unit configured to transmit, in a beamforming training, a beacon frame from each sector of the multiple transmit antennas, where the beacon frame carries a transmit antenna identifier, a sector identifier, and the access corresponding to the beacon frame The number of transmit antennas of the point; measuring the received signal quality of each of the beacon frames by triggering a station that simultaneously receives the beacon frames using multiple receive antennas and determining at least two communication links and each according to the received signal quality a target transmit antenna identifier and a target sector identifier corresponding to the communication link;
  • the transceiver unit is further configured to acquire the target transmit antenna identifier and the target sector identifier returned by the station.
  • the transceiver unit is further configured to perform data communication with the site by using the target sector of the target transmit antenna;
  • the transceiver unit is further configured to perform beam adjustment between the target sector of the target transmit antenna and a receive antenna corresponding to the station.
  • the beacon frame includes a domain for identifying whether the access point supports multiple input multiple output MIMO that simultaneously establishes multiple communication links, and a domain for identifying MIMO capability of the access point.
  • the domain for identifying the MIMO capability of the access point includes at least one of the following:
  • the maximum number of channels included in the channel binding whether the power saving mode is supported, whether the short guard interval is supported, whether the long guard interval is supported, whether the transmit diversity is supported, whether the receive diversity is supported, whether the transmit polarization is supported, whether the receive polarization is supported, whether Supports transmission of MIMO signals, support for receiving MIMO signals, and support for mobility.
  • the station uses multiple receiving antennas to simultaneously receive multiple beacon frames sequentially sent by the access point, and one beacon frame corresponds to one sector of one transmitting antenna of the access point, and simultaneously
  • the beacon frame also carries a corresponding transmit antenna identifier and a sector identifier.
  • the station measures received signal quality of each of the plurality of receiving antennas to receive the beacon frame, and determines at least two communication links between the plurality of receiving antennas of the station and the plurality of transmitting antennas of the access point according to the received signal quality And each communication link corresponds to a target transmit antenna identifier and a target sector identifier of the access point, and different transmit and receive antennas of different communication links are different, and the station returns the target transmit antenna identifier and the target sector identifier to Access point, this way can achieve the antenna mode selection corresponding to multiple communication links between the access point and the station.
  • 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 beamforming training method according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of another beamforming training method according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of still another beamforming training method according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart diagram of still another beamforming training method according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a sector scan frame according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a Beacon frame according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a station according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of another station according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of an access point according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of another access point according to an embodiment of the present invention.
  • the beamforming training method of the embodiment of the present invention can be applied to a network supporting the 802.11ay protocol.
  • 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.
  • the AP provides access services to terminal sites in the WLAN, as well as management and coordination of terminal sites.
  • the PCP/AP and each STA in the network supporting the 802.11ay protocol also need to perform beamforming training to find the respective transmit antenna mode and receive antenna mode suitable for PCP/AP and STA.
  • the two sites performing BF training act as initiators and responders, respectively.
  • the PCP/AP generally acts as the initiator
  • the STA generally acts as the responder.
  • the BF training process is divided into two phases.
  • the first phase is the sector-level sweep (SLS) phase
  • the second phase is the beam refinement protocol (BRP) phase
  • the SLS phase is the transmit antenna mode and receive antenna between the two sites.
  • the mode performs relatively coarse training and adjustment.
  • the BRP phase is based on the training results of the SLS phase to perform finer training and adjustment of the transmit antenna mode and the receive antenna mode between the two sites.
  • the PF training between the PCP/AP and a STA through the SLS phase and the BRP phase can only find one transmit antenna mode and one receive antenna mode to establish a A communication link and data communication through a single data stream.
  • the MIMO communication requires the PCP/AP and the STA to have multiple antennas to establish multiple communication links, and form multiple independent data streams through multiple communication links for data communication. Therefore, it is necessary to perform modification and adjustment in the beamforming training of the existing 802.11ad protocol to find multiple communication links between the PCP/AP and the STA, and the transmitting antenna and the receiving antenna corresponding to each communication link, and The antenna mode used by each of the transmitting antenna and the receiving antenna.
  • the PCP/AP has two antennas (antenna A and antenna B)
  • the STA has two antennas (antenna 1 and antenna 2).
  • antenna A corresponds to antenna 1 and antenna B corresponds to antenna 2
  • antenna B corresponds to antenna 2
  • the respective transmission modes of antenna A and antenna B the respective reception modes of antenna 1 and antenna 2, in order to subsequently establish two independent data streams between antenna A and antenna 1, and between antenna B and antenna 2,
  • the MIMO communication method can be used when the PCP/AP transmits data to the STA.
  • the beamforming training method of the embodiment of the present invention mainly finds multiple communication links between the PCP/AP and the STA and the transmitting antenna and the receiving antenna corresponding to each communication link through the rough beamforming training in the SLS phase. Find a one-to-one correspondence between the transmitting antenna and the receiving antenna. For the subsequent transmission mode of each transmitting antenna and the receiving mode of the receiving antenna, refer to the beamforming training mode of the prior art BRP phase, that is, in the PCP/AP and STA. Further beamforming training is performed independently between any pair of antennas.
  • FIG. 2 is a schematic flowchart of a beamforming training 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 station uses multiple receiving antennas to simultaneously receive multiple beacon frames sequentially sent by the access point, and one of the beacon frames corresponds to one sector of one transmitting antenna of the access point;
  • the beacon frame carries a transmit antenna identifier and a sector identifier corresponding to the beacon frame;
  • the station and the access point each have multiple antennas, and the Beacon Transmission Interval (BTI) included in the continuous Beacon Interval (BI) during beamforming training.
  • BTI Beacon Transmission Interval
  • the PCP/AP sends beacon frames in sequence using all the sectors of the multiple antennas it has, and each sector sends a Beacon frame, which is a fan of a transmit antenna corresponding to the access point of the Beacon frame.
  • one transmit antenna includes multiple sectors, for example, PCP/AP includes antenna A and antenna B, antenna A includes four sectors, and antenna B includes two sectors.
  • the PCP/AP sequentially transmits a Beacon frame in four sectors of the antenna A and two sectors of the antenna B.
  • the PCP/AP may firstly transmit four fans from the transmitting antenna A in sequence.
  • the area sends the Beacon frame, and then sends the Beacon frame from the two sectors of the antenna B.
  • the PCP/AP can also send the Beacon frame from the two sectors of the antenna B, and then send the Beacon frame from the four sectors of the transmitting antenna A.
  • the PCP/AP is sent from all sectors in turn, and the loop is repeated.
  • FIG. 7 is a schematic structural diagram of a Beacon frame according to an embodiment of the present invention.
  • a Beacon frame includes multiple domains (for example, a frame control, a period, and a basic service set identifier. And transmitting an antenna identifier, a sector identifier, a number of transmitting antennas, an identifier of the MINO, and other multiple domains.
  • the embodiment of the present invention focuses on a domain for identifying the number of transmitting antennas of the PCP/AP, and is used to identify the The field of the transmit antenna corresponding to the frame (that is, the transmit antenna identifier in the Beacon frame), the field used to identify the sector corresponding to the beacon frame (that is, the sector identifier in the Beacon frame), used to identify the PCP/ Whether the AP supports the MIMO domain (that is, whether the identifier of the MIMIO is supported in the Beacon frame) and the domain for identifying the capability of the PCP/AP and the MIMO (that is, the identifier of the MIMO capability in the Beacon frame), which is used to identify the PCP.
  • the domains of /AP and MIMO capabilities include but are not limited to the following:
  • Short GI short protection interval
  • TX Diversity Whether to support transmit diversity
  • PLCP physical layer convergence procedure
  • PPDU protocol data unit
  • the STA of the station simultaneously uses multiple receiving antennas to receive multiple Beacons sent by the PCP/AP in sequence.
  • the frame that is, when the PCP/AP sends a Beacon frame
  • the multiple receiving antennas of the STA can receive the Beacon frame at the same time.
  • the receiving signals of the receiving antennas receiving the Beacon frame are of different quality, in order to determine each The receiving antenna corresponds to the target transmitting antenna of the PCP/AP, and the received signal quality of each receiving antenna receiving the Beacon frame needs to be measured.
  • the station measures, by each of the multiple receiving antennas, a received signal quality of the beacon frame, and determines, according to the received signal quality, multiple receiving antennas and the access of the station. At least two communication links between the plurality of transmit antennas of the point and each of the communication links corresponding to a target transmit antenna of the access point and a target sector of the target transmit antenna; corresponding to different communication links The transmitting antenna and the receiving antenna are different;
  • the STA independently measures the received signal quality of each of the plurality of receiving antennas to receive the Beacon frame. Since there are multiple Beacon frames, each receiving antenna of the STA performs the received signal quality of the multiple Beacon frames. measuring.
  • the PCP/AP includes the antenna A and the antenna B. The antenna A includes two sectors, and the antenna B includes two sectors.
  • Each receiving antenna of the STA receives four Beacon frames and measures the reception of the respective receiving Beacon frames. Signal quality, if the STA includes two antennas, the value of the received signal quality measured by the STA includes eight.
  • the measurement content of the received signal quality measurement in the embodiment of the present invention includes, but is not limited to, signal strength, signal energy, and signal to noise ratio.
  • the STA determines, according to the measurement result of the received signal quality measured by each receiving antenna, at least two communication links between the plurality of receiving antennas of the STA and the plurality of transmitting antennas of the PCP/AP, and each communication link corresponds to the connection
  • the destination transmitting antenna of the in-point and the target sector of the target transmitting antenna it should be noted that the transmitting antenna and the receiving antenna corresponding to different communication links are different, that is, one transmitting antenna of the PCP/AP can only be one with the STA.
  • a communication link is established between the receiving antennas, and the target sector may include one or more. When the target sector includes multiple, the PCP/AP may further select for subsequent beamforming training in the target sector. Or a sector of data communication.
  • the determining, by the STA, the at least two communication links is determined by determining the maximum value of the established communication link according to the number of transmitting antennas of the PCP/AP identified in the Beacon frame and the number of receiving antennas thereof, for example, if the PCP/ The number of transmitting antennas of the AP is four, and the number of receiving antennas of the STA is two.
  • the maximum number of communication links between the PCP/AP and the STA is two. If the number of transmitting antennas of the PCP/AP is two, the number of receiving antennas of the STA is two. Four, the number of communication links between the PCP/AP and the STA The maximum is still two. However, specifically determining the number of established communication links, and the target transmit antenna identifier and the target sector identifier corresponding to each communication link need to be determined according to the respective received signal quality measurement results.
  • the comparison value between the received signal qualities is the largest); it should be noted that before comparing here, it is necessary to calculate the comparison value between the received signal qualities of the receiving antennas received by each receiving antenna for each beacon frame. Then you can choose the one with the largest comparison value.
  • the received signal quality measurement value of the beacon frame transmitted by the target sector of the receiving PCP/AP target transmitting antenna measured by the target receiving antenna of the STA satisfies (greater or smaller) the preset threshold value (different measured values may correspond to different Threshold).
  • the transmitting antenna and the receiving antenna corresponding to different communication links are different, that is, the different target receiving antennas of the STA correspond to different target transmitting antennas.
  • a communication link can be established between a target receiving antenna and a target transmitting antenna.
  • the specific internal algorithm is not limited as long as the communication link between the PCP/AP target transmitting antenna and the STA target receiving antenna determined according to the above three conditions is within the scope protected by the embodiment of the present invention.
  • the station returns the target transmit antenna identifier and the target sector identifier to the access point.
  • the STA when the STA determines at least two communication links with the PCP/AP, And after the target transmit antenna of the PCP/AP corresponding to each communication link and the target sector of the target transmit antenna, the STA returns the target transmit antenna identifier and the target sector identifier to the PCP/AP.
  • the STA returns a data frame or a sector sweep frame (SSW) to the PCP/AP, where the data frame or the SSW frame carries the target antenna identifier and the target sector identifier, and further optionally, the data frame or The received signal quality measurement result of the beacon frame corresponding to the target sector of the target antenna may also be included in the SSW frame.
  • SSW sector sweep frame
  • FIG. 6 it is a schematic diagram of a sector scanning frame, where the SSW frame carries a new element Element, as shown in the figure, the element identifier of the new element Element, the element length, and the target transmitting antenna identifier of the PCP/AP, The target sector identifier and the received signal quality measurement result of the beacon frame corresponding to the target sector, it should be noted that the received signal quality measurement result is an option.
  • the STA sends an SSW frame to the PCP/AP, where the SSW frame includes one or more target transmit antennas corresponding to the STA target receive antennas.
  • a sector ID a communication link between a target transmit antenna and a target receive antenna.
  • the transmit antenna identifier refers to a target transmit antenna identifier of the PCP/AP
  • the sector identifier refers to a target sector identifier selected by the STA from the target transmit antenna
  • the area identifier may include one or more
  • the received signal quality measurement result refers to the received signal quality measurement result of the beacon frame corresponding to the target sector of the target transmitting antenna.
  • the target antenna includes the antenna 1 of the PCP/AP, the identifier of the antenna 1 carrying the antenna 1 in the field transmitting antenna 1 of the new element of the SSW frame, and the target sector identifier of the antenna 1, further including the target sector of the antenna 1
  • the received signal quality measurement result of the frame For example, if the target antenna includes the antenna 1 of the PCP/AP, the identifier of the antenna 1 carrying the antenna 1 in the field transmitting antenna 1 of the new element of the SSW frame, and the target sector identifier of the antenna 1, further including the target sector of the antenna 1 The received signal quality measurement result of the frame.
  • the content of the new element Element includes but is not limited to the above, and the new Element can be included in all other applicable frames including the SSW frame.
  • the PCP/AP After the PCP/AP obtains the target transmit antenna identifier and the target sector identifier, in the BRP phase of the beamforming training, between the PCP/AP and the STA, only the target transmitting antenna and the target receiving antenna corresponding to the above-mentioned ones are determined. Further beamforming training can be performed between them (the prior art is that beamforming training is performed between any pair of determined antennas of the PCP/AP and the STA) to find the transmission/reception mode of each antenna.
  • the STA determines that at least two communication links cannot be established (eg, the target target sector of the different target receiving antennas of the corresponding STAs from the same target transmitting antenna of the PCP/AP, or the target If the received signal quality measurement result of the beacon frame corresponding to the target sector of the transmitting antenna does not meet the preset threshold, etc., the STA sends the SSW frame to the PCP/AP in the A-BFT according to the existing IEEE 802.11ad technology, and the SSW The frame only contains the sector in which the PCP/AP that the STA receives the best signal quality transmits the Beacon frame.
  • the station uses multiple receiving antennas to simultaneously receive multiple beacon frames sequentially sent by the access point, and one beacon frame corresponds to one sector of one transmitting antenna of the access point, and simultaneously
  • the beacon frame also carries a corresponding transmit antenna identifier and a sector identifier.
  • the station measures received signal quality of each of the plurality of receiving antennas to receive the beacon frame, and determines at least two communication links between the plurality of receiving antennas of the station and the plurality of transmitting antennas of the access point according to the received signal quality And each communication link corresponds to a target transmit antenna identifier and a target sector identifier of the access point, and different transmit and receive antennas of different communication links are different, and the station returns the target transmit antenna identifier and the target sector identifier to Access point, this way can achieve the antenna mode selection corresponding to multiple communication links between the access point and the station.
  • FIG. 3 is a schematic flowchart of another beamforming training method according to an embodiment of the present invention. As shown in the figure, the beamforming training method of this embodiment includes steps S300-S303;
  • the station uses multiple receiving antennas to simultaneously receive multiple beacon frames that are sequentially sent by the access point, and one of the beacon frames corresponds to one sector of one transmitting antenna of the access point;
  • the beacon frame carries a transmit antenna identifier and a sector identifier corresponding to the beacon frame;
  • step S300 of the embodiment of the present invention refer to step S200 of the embodiment of FIG. 2, and details are not described herein again.
  • the station measures, by each of the multiple receiving antennas, a received signal quality of the beacon frame, and for each of the beacon frames, acquires the received signal measured by each of the receiving antennas. a comparison value between the received signal qualities of the frame;
  • the STA after the STA measures the received signal quality of each of the plurality of receiving antennas to receive the beacon frame, the STA needs to analyze and compare the measured values to obtain multiple receiving antennas of the STA and the PCP/AP. At least two communication links between the plurality of transmitting antennas, and a target transmitting antenna corresponding to each of the communication links and a target sector of the target transmitting antenna.
  • the number of received signal quality measurements is determined according to the number of STA receiving antennas and the number of PCP/AP transmitting antennas and the number of sectors of each transmitting antenna.
  • the number of receiving antennas includes two (receiving antenna 1 and receiving antenna 2), and the transmission is performed.
  • the number of antennas includes two (transmit antenna A and transmit antenna B), and the two transmit antennas each include two sectors, and the measured values include eight.
  • Determining, according to the measured value, a communication link between the PCP/AP and the STA, and obtaining, for each beacon frame, a comparison value between the received signal quality of the received beacon frame measured by each receiving antenna, and the comparison value may be The difference may also be a ratio, which is not limited herein, and the difference is taken as an example for illustration.
  • the received signal quality of the antenna 1 is 10
  • the received signal quality of the antenna 2 is 1
  • the difference between the antenna 1 and the antenna 2 is 9, and the difference between the antenna 2 and the antenna 1 is -9
  • the received signal quality of the antenna 1 is 8, and the received signal quality of the antenna 2 is 2
  • the difference between the antenna 1 and the antenna 2 is 6, and the difference between the antenna 2 and the antenna 1
  • the received signal quality of antenna 1 is 3, the received signal quality of antenna 2 is 7, and the difference between antenna 1 and antenna 2 is -4, antenna 2 and antenna 1
  • the difference is 4, for the beacon frame of B.2 sector, the received signal quality of antenna 1 is 2, the received signal quality of antenna 2 is 8, the difference between antenna 1 and antenna 2 is -6, antenna 2 and antenna 1
  • the difference is 6.
  • the station determines, according to each of the comparison values, at least two communication links between multiple receiving antennas of the station and multiple transmitting antennas of the access point, and corresponding to each of the communication links. And a target transmit antenna of the access point and a target sector of the target transmit antenna.
  • the STA after obtaining a plurality of comparison values between the receiving antennas, the STA further determines, according to the comparison value, at least two communication links between the STA and the PCP/AP and a target transmitting antenna corresponding to each communication face. And the target sector of the target transmit antenna.
  • the preset communication link establishment condition is that the received signal quality of the target receiving antenna to the beacon frame meets a preset threshold, and the transmitting antenna and the station of the access point corresponding to different communication links are received.
  • the antennas are different.
  • the STA may compare the size of each comparison value, and determine at least two communication links between the STA and the PCP/AP according to the preset communication link establishment condition, and the preset communication link establishment conditions include: The received signal quality of the target receiving antenna to the beacon frame satisfies a preset threshold, and the transmitting antenna of the PCP/AP and the receiving antenna of the STA corresponding to different communication links are different.
  • the sector with the largest comparison value among the comparison values is selected as the target sector of the target transmission antenna, and the above example is continued.
  • the difference between antenna 1 and antenna 2 is 9, for the A.2 sector, the difference between antenna 1 and antenna 2 is 6, for the B.1 sector, the difference between antenna 1 and antenna 2 is -4, for the B.2 sector, then antenna 1 and The difference between the antennas 2 is -6, which is obviously for the A.1 sector, and the difference between the antenna 1 and the antenna 2 is the largest. Therefore, the antenna A is used as the target transmitting antenna of the antenna 1, and the sector 1 of the antenna A is used as the target sector. That is, a communication link can be established between the antenna 1 and the antenna A.
  • the antenna B is used as the target transmitting antenna of the antenna 2
  • the sector 2 of the antenna B is taken as the target sector, that is, the antenna 2 and the antenna B A communication link can be established between them.
  • the received signal quality of the target receive antenna to the beacon frame satisfies a preset threshold.
  • the value, and the transmit antenna of the PCP/AP corresponding to the two different communication links and the receive antenna of the STA are different, so the target transmit antenna and the target sector satisfy the preset communication link establishment condition.
  • steps of analyzing each comparison value and determining whether the preset communication link establishment condition is met are in no particular order, and may be performed simultaneously or sequentially, and are not limited herein. .
  • the comparison value when analyzing and selecting each comparison value, for some equalization situations, the comparison value may not be selected to be the largest, and the second largest or third largest may be selected, and the equalization includes, for example, the received signal quality satisfies the preset threshold.
  • the comparison value In the case of a value, different communication links correspond to the same target transmit antenna, and the comparison value can be equalized and selected according to the specific situation.
  • the station returns a data frame or a sector scan frame to the access point, where the data frame or the sector scan frame carries the target transmit antenna identifier and the target sector identifier.
  • the STA returns a data frame or an SSW frame to the PCP/AP, where the data frame or The SSW frame carries the target antenna identifier and the target sector identifier of the target antenna. Further, optionally, the data frame or the SSW frame may further include a received signal quality measurement of the beacon frame corresponding to the target sector of the target antenna. result.
  • FIG. 6 it is a schematic diagram of a sector scan frame, where the SSW frame carries a new element Element, and the new element Element includes a target transmit antenna identifier, a target sector identifier, and a target sector identifier of the PCP/AP.
  • the received signal quality measurement result of the beacon frame needs to be explained that the received signal quality measurement result is an option.
  • the STA sends an SSW frame to the PCP/AP, where the SSW frame contains one or more sector IDs of the target transmitting antenna corresponding to the STA target receiving antenna, a target transmitting antenna and A communication link can be established between a target receiving antenna.
  • FIG. 6 is a schematic diagram of a new element of the SSW frame, where the transmit antenna identifier refers to a target transmit antenna identifier of the PCP/AP, and the sector identifier refers to a target sector identifier selected by the STA from the target transmit antenna, and the received signal quality is measured. The result is the received signal quality measurement result of the beacon frame corresponding to the target sector of the target transmitting antenna.
  • the target antenna includes the antenna 1 of the PCP/AP, the identifier of the antenna 1 carrying the antenna 1 in the field transmitting antenna 1 of the new element of the SSW frame, and the target sector identifier of the antenna 1, further including the target sector of the antenna 1
  • the received signal quality measurement result of the frame For example, if the target antenna includes the antenna 1 of the PCP/AP, the identifier of the antenna 1 carrying the antenna 1 in the field transmitting antenna 1 of the new element of the SSW frame, and the target sector identifier of the antenna 1, further including the target sector of the antenna 1 The received signal quality measurement result of the frame.
  • the content of the new element Element includes but is not limited to the above, and the new Element can be included in all other applicable frames including the SSW frame.
  • the station uses multiple receiving antennas to simultaneously receive multiple beacon frames sequentially sent by the access point, and one beacon frame corresponds to one sector of one transmitting antenna of the access point, and simultaneously
  • the beacon frame also carries a corresponding transmit antenna identifier and a sector identifier.
  • the station measures received signal quality of each of the plurality of receiving antennas to receive the beacon frame, and determines at least two communication links between the plurality of receiving antennas of the station and the plurality of transmitting antennas of the access point according to the received signal quality And each communication link corresponds to a target transmit antenna identifier and a target sector identifier of the access point, and different transmit and receive antennas of different communication links are different, and the station returns the target transmit antenna identifier and the target sector identifier to Access point, this way can achieve the antenna mode selection corresponding to multiple communication links between the access point and the station.
  • FIG. 4 is a schematic flowchart of another beamforming training method according to an embodiment of the present invention.
  • the beamforming training method of this embodiment includes steps S400-S401;
  • the access point sequentially sends a beacon frame from each sector of the multiple transmit antennas, where the beacon frame carries a transmit antenna identifier, a sector identifier, and the access corresponding to the beacon frame.
  • the number of transmit antennas of the point measuring the received signal quality of each of the beacon frames by triggering a station that simultaneously receives the beacon frames using multiple receive antennas and determining at least two communication links and each according to the received signal quality a target transmit antenna identifier and a target sector identifier corresponding to the communication link;
  • the STA and the PCP/AP each have multiple antennas, and during the beamforming training, the PCP/AP uses multiple antennas in the beacon transmission interval BTI period included in the continuous BI. All sectors transmit beacon Beacon frames in turn, and each sector sends a Beacon frame, which is a sector of a transmit antenna corresponding to an access point of a Beacon frame, and a transmit antenna includes multiple sectors, such as PCP/
  • the AP includes an antenna A and an antenna B.
  • the antenna A includes four sectors, and the antenna B includes two sectors.
  • the PCP/AP sequentially has four sectors of the antenna A and two fans of the antenna B. The area sends the Beacon frame respectively.
  • the PCP/AP may first send the Beacon frame from the four sectors of the transmitting antenna A, and then send the Beacon frame from the two sectors of the antenna B.
  • the PCP/AP may also be the antenna first.
  • the two sectors of B transmit the Beacon frame, and then send the Beacon frame from the four sectors of the transmitting antenna A.
  • the PCP/AP is sent from all sectors in turn, and the loop is repeated.
  • FIG. 7 is a schematic structural diagram of a Beacon frame according to an embodiment of the present invention.
  • a Beacon frame includes multiple domains (for example, a frame control, a period, and a basic service set identifier. And transmitting an antenna identifier, a sector identifier, a number of transmitting antennas, an identifier of the MINO, and other multiple domains.
  • the embodiment of the present invention focuses on a domain for identifying the number of transmitting antennas of the PCP/AP, and is used to identify the The field of the transmit antenna corresponding to the frame (that is, the transmit antenna identifier in the Beacon frame), the field used to identify the sector corresponding to the beacon frame (that is, the sector identifier in the Beacon frame), used to identify the PCP/ Whether the AP supports the MIMO domain (that is, whether the identifier of the MIMIO is supported in the Beacon frame) and the domain for identifying the capability of the PCP/AP and the MIMO (that is, the identifier of the MIMO capability in the Beacon frame), which is used to identify the PCP.
  • the domains of /AP and MIMO capabilities include but are not limited to the following:
  • Short GI short protection interval
  • TX Diversity Whether to support transmit diversity
  • PLCP physical layer convergence procedure
  • PPDU protocol data unit
  • the STAs of the STA receive multiple Beacon frames sent by the PCP/AP at the same time, that is, when the PCP/AP sends a Beacon frame, the multiple receiving antennas of the STA can receive the Beacon frame at the same time.
  • the receiving signals of the Beacon frames are different in quality.
  • the access point acquires the target transmit antenna identifier and the target sector identifier returned by the station.
  • the STA may encapsulate the target transmit antenna identifier and the target sector identifier in a data frame or an SSW frame for return, and the PCP/AP receives the data frame or the SSW frame returned by the STA, and parses and acquires the data frame or the SSW frame.
  • the target transmit antenna identifier and the target sector identifier can be targeted to the target sector of the specific target transmit antenna by the target transmit antenna identifier and the target sector identifier.
  • one communication link corresponds to one receiving antenna of the STA and one transmitting antenna of the PCP/AP, so the STA returns at least two target transmitting antenna identifiers, and the PCP/AP can The target transmit antenna identified by the returned target transmit antenna identifier is used for further beamforming training to find a transmit/receive mode suitable for each other.
  • the station uses multiple receiving antennas to simultaneously receive multiple beacon frames sequentially sent by the access point, and one beacon frame corresponds to one fan of one transmitting antenna of the access point.
  • the zone at the same time, the beacon frame also carries a corresponding transmit antenna identifier and a sector identifier.
  • the station measures received signal quality of each of the plurality of receiving antennas to receive the beacon frame, and determines at least two communication links between the plurality of receiving antennas of the station and the plurality of transmitting antennas of the access point according to the received signal quality And each communication link corresponds to a target transmit antenna identifier and a target sector identifier of the access point, and different transmit and receive antennas of different communication links are different, and the station returns the target transmit antenna identifier and the target sector identifier to Access point, this way can achieve the antenna mode selection corresponding to multiple communication links between the access point and the station.
  • the beamforming training method of this embodiment includes steps S500-S502;
  • the access point sequentially sends a beacon frame from each sector of the multiple transmit antennas, where the beacon frame carries a transmit antenna identifier, a sector identifier, and the access corresponding to the beacon frame.
  • the number of transmit antennas of the point measuring the received signal quality of each of the beacon frames by triggering a station that simultaneously receives the beacon frames using multiple receive antennas and determining at least two communication links and each according to the received signal quality a target transmit antenna identifier and a target sector identifier corresponding to the communication link;
  • the access point acquires the target transmit antenna identifier and the target sector identifier returned by the station.
  • steps S500-S501 of the embodiment of the present invention refer to the steps S400-S401 of the embodiment of FIG. 4, and details are not described herein again.
  • the access point performs data communication with the site by using the target sector of the target transmit antenna; or
  • the access point performs beam adjustment between the target sector of the target transmit antenna and a receive antenna corresponding to the station.
  • the PCP/AP may directly use the target sector of the target transmit antenna to perform data communication with the STA, and the target transmit antenna may have multiple, so A plurality of independent data streams can be established between the PCP/AP and the STA for data communication.
  • the PCP/AP may further perform more accurate beamforming training after acquiring the target antenna identifier and the target sector identifier returned by the STA, and specifically, may be in each determined communication chain. Beamforming training is performed between the target sector of the target transmitting antenna corresponding to the path and the corresponding receiving antenna. In the prior art, beamforming training is performed between any pair of antennas determined between the PCP/AP and the STA. .
  • the PCP/AP performs further beamforming training between the sector 1 of the antenna A and the antenna 1 of the STA. .
  • the station uses multiple receiving antennas to simultaneously receive multiple beacon frames sequentially sent by the access point, and one beacon frame corresponds to one sector of one transmitting antenna of the access point, and simultaneously
  • the beacon frame also carries a corresponding transmit antenna identifier and a sector identifier.
  • the station measures received signal quality of each of the plurality of receiving antennas to receive the beacon frame, and determines at least two communication links between the plurality of receiving antennas of the station and the plurality of transmitting antennas of the access point according to the received signal quality And each communication link corresponds to a target transmit antenna identifier and a target sector identifier of the access point, and different transmit and receive antennas of different communication links are different, and the station returns the target transmit antenna identifier and the target sector identifier to Access point, this way can achieve the antenna mode selection corresponding to multiple communication links between the access point and the station.
  • FIG. 8 is a schematic structural diagram of a site according to an embodiment of the present invention. As shown in the figure, a site according to an embodiment of the present invention includes:
  • the transceiver unit 100 is configured to receive, by using a plurality of receiving antennas, a plurality of beacon frames sequentially sent by the access point, where the beacon frame corresponds to a fan of one transmitting antenna of the access point.
  • a beacon frame carrying a transmit antenna identifier and a sector identifier corresponding to the beacon frame;
  • the station and the access point each have multiple antennas, and the Beacon Transmission Interval (BTI) included in the continuous Beacon Interval (BI) during beamforming training.
  • BTI Beacon Transmission Interval
  • the PCP/AP sends beacon frames in sequence using all the sectors of the multiple antennas it has, and each sector sends a Beacon frame, which is a fan of a transmit antenna corresponding to the access point of the Beacon frame.
  • one transmit antenna includes multiple sectors, for example, PCP/AP includes antenna A and antenna B, antenna A includes four sectors, and antenna B includes two sectors, then PCP/AP is sequentially in consecutive BTI periods. The four sectors of the antenna A and the two sectors of the antenna B respectively transmit Beacon frames.
  • the PCP/AP may firstly transmit four fans from the transmitting antenna A.
  • the area sends the Beacon frame, and then sends the Beacon frame from the two sectors of the antenna B.
  • the PCP/AP can also send the Beacon frame from the two sectors of the antenna B, and then send the Beacon frame from the four sectors of the transmitting antenna A.
  • the PCP/AP is sent from all sectors in turn, and the loop is repeated.
  • FIG. 7 is a schematic structural diagram of a Beacon frame according to an embodiment of the present invention.
  • a Beacon frame includes multiple domains (for example, a frame control, a period, and a basic service set identifier. And transmitting an antenna identifier, a sector identifier, a number of transmitting antennas, an identifier of the MINO, and other multiple domains.
  • the embodiment of the present invention focuses on a domain for identifying the number of transmitting antennas of the PCP/AP, and is used to identify the The field of the transmit antenna corresponding to the frame (that is, the transmit antenna identifier in the Beacon frame), the field used to identify the sector corresponding to the beacon frame (that is, the sector identifier in the Beacon frame), used to identify the PCP/ Whether the AP supports the MIMO domain (that is, whether the identifier of the MIMIO is supported in the Beacon frame) and the domain for identifying the capability of the PCP/AP and the MIMO (that is, the identifier of the MIMO capability in the Beacon frame), which is used to identify the PCP.
  • the domains of /AP and MIMO capabilities include but are not limited to the following:
  • Short GI short protection interval
  • TX Diversity Whether to support transmit diversity
  • PLCP physical layer convergence procedure
  • PPDU protocol data unit
  • the STA receiving and receiving unit 100 simultaneously receives multiple Beacon frames sent by the PCP/AP in multiple receiving antennas. That is, when the PCP/AP sends a Beacon frame, multiple receiving antennas of the STA can receive the Beacon frame at the same time. It should be noted that each receiving antenna receives the Beacon. The received signal quality of the frame is different. In order to be able to determine the target transmit antenna of each receive antenna corresponding to the PCP/AP, it is necessary to measure the received signal quality of each receive antenna to receive the Beacon frame.
  • the processing unit 101 is configured to measure a received signal quality of each of the plurality of receiving antennas to receive the beacon frame, and determine, according to the received signal quality, multiple receiving antennas and the connection of the station At least two communication links between the plurality of transmitting antennas of the in point and each of the communication links corresponding to the target transmitting antenna of the access point and a target sector of the target transmitting antenna; different communication links The corresponding transmit antenna and receive antenna are different;
  • the STA processing unit 101 independently measures the received signal quality of each of the plurality of receiving antennas to receive the Beacon frame. Since there are multiple Beacon frames, each receiving antenna of the STA receives multiple Beacon frames. Signal quality is measured.
  • the PCP/AP includes the antenna A and the antenna B. The antenna A includes two sectors, and the antenna B includes two sectors.
  • Each receiving antenna of the STA receives four Beacon frames and measures the reception of the respective receiving Beacon frames. Signal quality, if the STA includes two antennas, the value of the received signal quality measured by the STA includes eight.
  • the measurement content of the received signal quality measurement in the embodiment of the present invention includes, but is not limited to, signal strength, signal energy, and signal to noise ratio.
  • the STA determines, according to the measurement result of the received signal quality measured by each receiving antenna, at least two communication links between the plurality of receiving antennas of the STA and the plurality of transmitting antennas of the PCP/AP, and each communication link corresponds to the connection
  • the destination transmitting antenna of the in-point and the target sector of the target transmitting antenna it should be noted that the transmitting antenna and the receiving antenna corresponding to different communication links are different, that is, one transmitting antenna of the PCP/AP can only be one with the STA.
  • a communication link is established between the receiving antennas, and the target sector may include one or more. When the target sector includes multiple, the PCP/AP may further select for subsequent beamforming training in the target sector. Or a sector of data communication.
  • the determining, by the STA, the at least two communication links is determined by determining the maximum value of the established communication link according to the number of transmitting antennas of the PCP/AP identified in the Beacon frame and the number of receiving antennas thereof, for example, if the PCP/ The number of transmitting antennas of the AP is four, and the number of receiving antennas of the STA is two.
  • the maximum number of communication links between the PCP/AP and the STA is two. If the number of transmitting antennas of the PCP/AP is two, the number of receiving antennas of the STA is two. For four, the maximum number of communication links between the PCP/AP and the STA is still two.
  • specifically determining the number of communication links established, and the target transmit antenna identifier and the target sector identifier corresponding to each communication link need to be measured according to each received signal quality. Make a determination.
  • the comparison value between the received signal qualities is the largest); it should be noted that before comparing here, it is necessary to calculate the comparison value between the received signal qualities of the receiving antennas received by each receiving antenna for each beacon frame. Then you can choose the one with the largest comparison value.
  • the received signal quality measurement value of the beacon frame transmitted by the target sector of the receiving PCP/AP target transmitting antenna measured by the target receiving antenna of the STA satisfies (greater or smaller) the preset threshold value (different measured values may correspond to different Threshold).
  • the transmitting antenna and the receiving antenna corresponding to different communication links are different, that is, the different target receiving antennas of the STA correspond to different target transmitting antennas.
  • a communication link can be established between a target receiving antenna and a target transmitting antenna.
  • the specific internal algorithm is not limited as long as the communication link between the PCP/AP target transmitting antenna and the STA target receiving antenna determined according to the above three conditions is within the scope protected by the embodiment of the present invention.
  • the processing unit 101 determines, according to the received signal quality, at least two communication links between multiple receiving antennas of the station and multiple transmitting antennas of the access point, and each of the foregoing The communication link corresponds to the target transmit antenna of the access point and the target sector of the target transmit antenna, and specifically includes:
  • the processing unit 101 acquires, for each of the beacon frames, the measurement of each of the receiving antennas Receiving a comparison value between received signal qualities of the beacon frame;
  • the STA after the STA measures the received signal quality of each of the plurality of receiving antennas to receive the beacon frame, the STA needs to analyze and compare the measured values to obtain multiple receiving antennas of the STA and the PCP/AP. At least two communication links between the plurality of transmitting antennas, and a target transmitting antenna corresponding to each of the communication links and a target sector of the target transmitting antenna.
  • the number of received signal quality measurements is determined according to the number of STA receiving antennas and the number of PCP/AP transmitting antennas and the number of sectors of each transmitting antenna.
  • the number of receiving antennas includes two (receiving antenna 1 and receiving antenna 2), and the transmission is performed.
  • the number of antennas includes two (transmit antenna A and transmit antenna B), and the two transmit antennas each include two sectors, and the measured values include eight.
  • the processing unit 101 determines a communication link between the PCP/AP and the STA according to the measured value, and obtains, for each beacon frame, a comparison value between the received signal quality of the received beacon frame measured by each receiving antenna, and compares
  • the value may be a difference value or a ratio, which is not limited herein. The difference is used as an example for illustration.
  • the received signal quality of the antenna 1 is 10
  • the received signal quality of the antenna 2 is 1
  • the difference between the antenna 1 and the antenna 2 is 9, and the difference between the antenna 2 and the antenna 1 is -9
  • the received signal quality of the antenna 1 is 8, and the received signal quality of the antenna 2 is 2
  • the difference between the antenna 1 and the antenna 2 is 6, and the difference between the antenna 2 and the antenna 1
  • the received signal quality of antenna 1 is 3, the received signal quality of antenna 2 is 7, and the difference between antenna 1 and antenna 2 is -4, antenna 2 and antenna 1
  • the difference is 4, for the beacon frame of B.2 sector, the received signal quality of antenna 1 is 2, the received signal quality of antenna 2 is 8, the difference between antenna 1 and antenna 2 is -6, antenna 2 and antenna 1
  • the difference is 6.
  • the processing unit 101 determines, according to each of the comparison values, at least two communication links between the plurality of receiving antennas of the station and the plurality of transmitting antennas of the access point, and each of the communication links And a target transmit antenna of the access point and a target sector of the target transmit antenna.
  • the processing unit 101 further determines, according to the comparison value, at least two communication links between the STA and the PCP/AP and corresponding to each communication color.
  • the processing unit 101 determines, according to each of the comparison values, at least two communication links between the plurality of receiving antennas of the station and the plurality of transmitting antennas of the access point, and each of the The communication link corresponds to a target transmit antenna of the access point and a destination of the target transmit antenna Standard sectors, including:
  • the processing unit 101 determines, according to the size of each of the comparison values and a preset communication link establishment condition, that at least two communication links between the station and the access point and the communication link correspond to a target transmitting antenna of the access point and a target sector of the target transmitting antenna;
  • the preset communication link establishment condition is that the received signal quality of the receive antenna to the beacon frame meets a preset threshold, and the transmit antenna of the access point corresponding to different communication links and the receive antenna of the station are different. .
  • the STA processing unit 101 can compare the size of each comparison value, and determine at least two communication links between the STA and the PCP/AP according to the preset communication link establishment condition, and the preset communication link.
  • the establishment condition includes that the received signal quality of the target receiving antenna to the beacon frame satisfies a preset threshold, and the transmitting antenna of the PCP/AP and the receiving antenna of the STA corresponding to different communication links are different.
  • the sector with the largest comparison value among the comparison values is selected as the target sector of the target transmission antenna, and the above example is continued.
  • the difference between antenna 1 and antenna 2 is 9, for the A.2 sector, the difference between antenna 1 and antenna 2 is 6, for the B.1 sector, the difference between antenna 1 and antenna 2 is -4, for the B.2 sector, then antenna 1 and The difference between the antennas 2 is -6, which is obviously for the A.1 sector, and the difference between the antenna 1 and the antenna 2 is the largest. Therefore, the antenna A is used as the target transmitting antenna of the antenna 1, and the sector 1 of the antenna A is used as the target sector. That is, a communication link can be established between the antenna 1 and the antenna A.
  • the antenna B is used as the target transmitting antenna of the antenna 2
  • the sector 2 of the antenna B is taken as the target sector, that is, the antenna 2 and the antenna B A communication link can be established between them.
  • the received signal quality of the target receive antenna to the beacon frame satisfies a preset threshold.
  • the value, and the transmit antenna of the PCP/AP corresponding to the two different communication links and the receive antenna of the STA are different, so the target transmit antenna and the target sector satisfy the preset communication link establishment condition.
  • steps of analyzing each comparison value and determining whether the preset communication link establishment condition is met are in no particular order, and may be performed simultaneously or sequentially, and are not limited herein. .
  • the comparison value when analyzing and selecting each comparison value, for some equalization situations, the comparison value may not be selected to be the largest, and the second largest or third largest may be selected, and the equalization includes, for example, the received signal quality satisfies the preset threshold.
  • the comparison value In the case of a value, different communication links correspond to the same target transmit antenna, and the comparison value can be equalized and selected according to the specific situation.
  • the transceiver unit 100 is further configured to return the target transmit antenna identifier and the target sector identifier to the access point.
  • the STA transceiver unit 100 After the STA determines at least two communication links with the PCP/AP and the target transmitting antenna of the PCP/AP corresponding to each communication link and the target sector of the target transmitting antenna, The STA transceiver unit 100 returns the target transmit antenna identifier and the target sector identifier to the PCP/AP.
  • the transceiver unit 100 returns the target transmit antenna identifier and the target sector identifier to the access point, including:
  • the transceiver unit 100 returns a data frame or a sector scan frame to the access point, where the data frame or sector scan frame carries the target transmit antenna identifier and the target sector identifier.
  • the STA transceiver unit 100 returns a data frame or an SSW frame to the PCP/AP, where the data frame or the SSW frame carries the target antenna identifier and the target sector identifier of the target antenna, and further optionally, the data frame or The received signal quality measurement result of the beacon frame corresponding to the target sector of the target antenna may also be included in the SSW frame.
  • FIG. 6 it is a schematic diagram of a sector scan frame, where the SSW frame carries a new element Element, and the new element Element includes a target transmit antenna identifier, a target sector identifier, and a target sector identifier of the PCP/AP.
  • the received signal quality measurement result of the beacon frame needs to be explained that the received signal quality measurement result is an option.
  • the STA sends an SSW frame to the PCP/AP, where the SSW frame includes one or more sector identifiers of the target transmitting antenna corresponding to the STA target receiving antenna, a target transmitting antenna and A communication link can be established between a target receiving antenna.
  • FIG. 6 is a schematic diagram of a new element of the SSW frame, where the transmit antenna identifier refers to a target transmit antenna identifier of the PCP/AP, and the sector identifier refers to a target sector identifier selected by the STA from the target transmit antenna, and the received signal quality measurement result. It refers to the received signal quality measurement result of the beacon frame corresponding to the target sector of the target transmitting antenna.
  • the target antenna includes antenna 1 of the PCP/AP
  • the new element in the SSW frame The field transmitting antenna 1 carries the identifier of the antenna 1 and the target sector identifier of the antenna 1, and further includes the received signal quality measurement result of the beacon frame of the target sector of the antenna 1.
  • the content of the new element Element includes but is not limited to the above, and the new Element can be included in all other applicable frames including the SSW frame.
  • the station uses multiple receiving antennas to simultaneously receive multiple beacon frames sequentially sent by the access point, and one beacon frame corresponds to one sector of one transmitting antenna of the access point, and simultaneously
  • the beacon frame also carries a corresponding transmit antenna identifier and a sector identifier.
  • the station measures received signal quality of each of the plurality of receiving antennas to receive the beacon frame, and determines at least two communication links between the plurality of receiving antennas of the station and the plurality of transmitting antennas of the access point according to the received signal quality And each communication link corresponds to a target transmit antenna identifier and a target sector identifier of the access point, and different transmit and receive antennas of different communication links are different, and the station returns the target transmit antenna identifier and the target sector identifier to Access point, this way can achieve the antenna mode selection corresponding to multiple communication links between the access point and the station.
  • FIG. 9 is a schematic structural diagram of another station according to an embodiment of the present invention.
  • station 20 includes an antenna 200, a transmitter 201, a receiver 202, a processor 203, and a 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 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,
  • the memory 204 can store instructions to perform the following process:
  • the station uses multiple receiving antennas to simultaneously receive multiple beacon frames sequentially transmitted by the access point, and one of the beacon frames corresponds to one sector of one transmitting antenna of the access point;
  • the frame carries the transmit antenna identifier and the sector identifier corresponding to the beacon frame;
  • the station measures a received signal quality of each of the plurality of receiving antennas to receive the beacon frame, and determines a plurality of receiving antennas of the station and the access point according to the received signal quality
  • At least two communication links between the plurality of transmit antennas and each of the communication links corresponds to a target transmitting antenna of the access point and a target sector of the target transmitting antenna; the transmitting antenna and the receiving antenna corresponding to different communication links are different;
  • the station returns the target transmit antenna identity and the target sector identity to the access point.
  • the station and the access point each have multiple antennas, and during beamforming training, in a Beacon Transmission Interval (BTI) period included in a continuous beacon interval (BI)
  • the PCP/AP transmits the beacon Beacon frame in sequence using all the sectors of the plurality of antennas, and each sector sends a Beacon frame, that is, a sector of a transmitting antenna corresponding to the access point of the Beacon frame.
  • a transmitting antenna includes a plurality of sectors, for example, a PCP/AP includes an antenna A and an antenna B, an antenna A includes four sectors, and an antenna B includes two sectors, and in a continuous BTI period, the PCP/AP is sequentially in the antenna A.
  • the four sectors and the two sectors of the antenna B respectively transmit the Beacon frame.
  • the PCP/AP may first transmit the Beacon frame from the four sectors of the transmitting antenna A, and then from the two sectors of the antenna B. After the Beacon frame is sent, the PCP/AP may also send the Beacon frame from the two sectors of the antenna B, and then send the Beacon frame from the four sectors of the transmitting antenna A. The PCP/AP is sent from all sectors in turn, and the loop is repeated.
  • FIG. 7 is a schematic structural diagram of a Beacon frame according to an embodiment of the present invention.
  • a Beacon frame includes multiple domains (for example, a frame control, a period, and a basic service set identifier. And transmitting an antenna identifier, a sector identifier, a number of transmitting antennas, an identifier of the MINO, and other multiple domains.
  • the embodiment of the present invention focuses on a domain for identifying the number of transmitting antennas of the PCP/AP, and is used to identify the The field of the transmit antenna corresponding to the frame (that is, the transmit antenna identifier in the Beacon frame), the field used to identify the sector corresponding to the beacon frame (that is, the sector identifier in the Beacon frame), used to identify the PCP/ Whether the AP supports the MIMO domain (that is, whether the identifier of the MIMIO is supported in the Beacon frame) and the domain for identifying the capability of the PCP/AP and the MIMO (that is, the identifier of the MIMO capability in the Beacon frame), which is used to identify the PCP.
  • the domains of /AP and MIMO capabilities include but are not limited to the following:
  • Short GI short protection interval
  • TX Diversity Whether to support transmit diversity
  • PLCP physical layer convergence procedure
  • PPDU protocol data unit
  • the STAs of the STA receive multiple Beacon frames sent by the PCP/AP at the same time, that is, when the PCP/AP sends a Beacon frame, the multiple receiving antennas of the STA can receive the Beacon frame at the same time. Therefore, the received signal quality of each of the receiving antennas receiving the Beacon frame is different. In order to determine the target transmitting antennas of the respective receiving antennas corresponding to the PCP/AP, it is necessary to measure the received signal quality of the receiving antennas of the receiving antennas.
  • the STA independently measures the received signal quality of each of the plurality of receiving antennas to receive the Beacon frame. Since there are multiple Beacon frames, each receiving antenna of the STA measures the received signal quality of the multiple Beacon frames.
  • the PCP/AP includes the antenna A and the antenna B. The antenna A includes two sectors, and the antenna B includes two sectors.
  • Each receiving antenna of the STA receives four Beacon frames and measures the reception of the respective receiving Beacon frames.
  • Signal quality if the STA includes two antennas, the value of the received signal quality measured by the STA includes eight.
  • the measurement content of the received signal quality measurement in the embodiment of the present invention includes, but is not limited to, signal strength, signal energy, and signal to noise ratio.
  • the STA determines, according to the measurement result of the received signal quality measured by each receiving antenna, at least two communication links between the plurality of receiving antennas of the STA and the plurality of transmitting antennas of the PCP/AP, and each communication link corresponds to the connection
  • the destination transmitting antenna of the in-point and the target sector of the target transmitting antenna it should be noted that the transmitting antenna and the receiving antenna corresponding to different communication links are different, that is, one transmitting antenna of the PCP/AP can only be one with the STA.
  • a communication link is established between the receiving antennas, and the target sector may include one or more. When the target sector includes multiple, the PCP/AP may further select for subsequent beamforming training in the target sector. Or a sector of data communication.
  • the determining, by the STA, the at least two communication links is determined by determining the maximum value of the established communication link according to the number of transmitting antennas of the PCP/AP identified in the Beacon frame and the number of receiving antennas thereof, for example, if the PCP/ The number of transmitting antennas of the AP is four, and the number of receiving antennas of the STA is two.
  • the maximum number of communication links between the PCP/AP and the STA is two. If the number of transmitting antennas of the PCP/AP is two, the number of receiving antennas of the STA is two. For four, the maximum number of communication links between the PCP/AP and the STA is still two.
  • specifically determining the number of established communication links, and the target transmit antenna identifier and the target sector identifier corresponding to each communication link need to be determined according to the respective received signal quality measurement results.
  • the comparison value between the received signal qualities is the largest); it should be noted that before comparing here, it is necessary to calculate the comparison value between the received signal qualities of the receiving antennas received by each receiving antenna for each beacon frame. Then you can choose the one with the largest comparison value.
  • the received signal quality measurement value of the beacon frame transmitted by the target sector of the receiving PCP/AP target transmitting antenna measured by the target receiving antenna of the STA satisfies (greater or smaller) the preset threshold value (different measured values may correspond to different Threshold).
  • the transmitting antenna and the receiving antenna corresponding to different communication links are different, that is, the different target receiving antennas of the STA correspond to different target transmitting antennas.
  • a communication link can be established between a target receiving antenna and a target transmitting antenna.
  • PCP/AP target transmit antenna and STA target are determined according to the above three conditions
  • the communication link between the receiving antennas is within the scope of the protection of the embodiment of the present invention, and the specific internal algorithm is not limited.
  • the STA determines at least two communication links with the PCP/AP and a target transmit antenna of the PCP/AP corresponding to each communication link and a target sector of the target transmit antenna
  • the STA The target transmit antenna identifier and the target sector identifier are returned to the PCP/AP.
  • the STA returns a data frame or a sector sweep frame (SSW) to the PCP/AP, where the data frame or the SSW frame carries the target antenna identifier and the target sector identifier, and further optionally, the data frame or The received signal quality measurement result of the beacon frame corresponding to the target sector of the target antenna may also be included in the SSW frame.
  • SSW sector sweep frame
  • FIG. 6 it is a schematic diagram of a sector scan frame, where the SSW frame carries a new element Element, and the new element Element includes a target transmit antenna identifier, a target sector identifier, and a target sector identifier of the PCP/AP.
  • the received signal quality measurement result of the beacon frame needs to be explained that the received signal quality measurement result is an option.
  • the STA sends an SSW frame to the PCP/AP, where the SSW frame includes one or more target transmit antennas corresponding to the STA target receive antennas.
  • a sector ID a communication link between a target transmit antenna and a target receive antenna.
  • the transmit antenna identifier refers to a target transmit antenna identifier of the PCP/AP
  • the sector identifier refers to a target sector identifier selected by the STA from the target transmit antenna
  • the target sector identifier One or more may be included
  • the received signal quality measurement result refers to the received signal quality measurement result of the beacon frame corresponding to the target sector of the target transmitting antenna.
  • the target antenna includes the antenna 1 of the PCP/AP, the identifier of the antenna 1 carrying the antenna 1 in the field transmitting antenna 1 of the new element of the SSW frame, and the target sector identifier of the antenna 1, further including the target sector of the antenna 1
  • the received signal quality measurement result of the frame For example, if the target antenna includes the antenna 1 of the PCP/AP, the identifier of the antenna 1 carrying the antenna 1 in the field transmitting antenna 1 of the new element of the SSW frame, and the target sector identifier of the antenna 1, further including the target sector of the antenna 1 The received signal quality measurement result of the frame.
  • the content of the new element Element includes but is not limited to the above, and the new Element can be included in all other applicable frames including the SSW frame.
  • the PCP/AP After the PCP/AP obtains the target transmit antenna identifier and the target sector identifier, in the BRP phase of the beamforming training, between the PCP/AP and the STA, only the target transmitting antenna and the target receiving antenna corresponding to the above-mentioned ones are determined. Further beamforming training can be performed between them (the prior art is to perform beamforming training between any pair of determined antennas of PCP/AP and STA) to find Transmit/receive mode for each antenna.
  • the STA does not support establishing multiple communication links (that is, the MIMO communication mode is not supported), or the STA determines that at least two communication links cannot be established according to the received signal quality measurement result of each beacon frame (eg, the corresponding STA is different) If the target sector of the target receiving antenna is from the same target transmitting antenna of the PCP/AP, or the received signal quality measurement result of the beacon frame corresponding to the target sector of the target transmitting antenna does not meet the preset threshold, etc., the STA follows The existing IEEE 802.11ad technology transmits an SSW frame to the PCP/AP in the A-BFT, and the SSW frame only includes the sector in which the PCP/AP that the STA receives the best signal quality transmits the Beacon frame.
  • the station determines, according to the received signal quality, at least two communication links between the plurality of receiving antennas of the station and the plurality of transmitting antennas of the access point, and each of the communication links Corresponding to the target transmitting antenna of the access point and the target sector of the target transmitting antenna, including:
  • each measured value needs to be analyzed and compared to obtain multiple receiving antennas and multiple PCP/APs of the STA.
  • the number of received signal quality measurements is determined according to the number of STA receiving antennas and the number of PCP/AP transmitting antennas and the number of sectors of each transmitting antenna.
  • the number of receiving antennas includes two (receiving antenna 1 and receiving antenna 2), and the transmission is performed.
  • the number of antennas includes two (transmit antenna A and transmit antenna B), and the two transmit antennas each include two sectors, and the measured values include eight.
  • Determining, according to the measured value, a communication link between the PCP/AP and the STA, and obtaining, for each beacon frame, a comparison value between the received signal quality of the received beacon frame measured by each receiving antenna, and the comparison value may be The difference may also be a ratio, which is not limited herein, and the difference is taken as an example for illustration. For example, for a beacon frame of the A.1 sector, the antenna 1 receives a signal quality of 10 and the antenna 2 receives the signal.
  • the quality is 1, the difference between antenna 1 and antenna 2 is 9, the difference between antenna 2 and antenna 1 is -9, for the beacon frame of A.2 sector, the received signal quality of antenna 1 is 8, and antenna 2 receives
  • the signal quality is 2, the difference between antenna 1 and antenna 2 is 6, the difference between antenna 2 and antenna 1 is -2, for the beacon frame of B.1 sector, the received signal quality of antenna 1 is 3, antenna 2
  • the received signal quality is 7, the difference between antenna 1 and antenna 2 is -4, the difference between antenna 2 and antenna 1 is 4.
  • the received signal quality of antenna 1 is 2, the antenna 2 When the received signal quality is 8, the difference between the antenna 1 and the antenna 2 is -6, and the difference between the antenna 2 and the antenna 1 is 6.
  • the STA further determines, according to the comparison value, at least two communication links between the STA and the PCP/AP, and a target transmitting antenna corresponding to each communication color, and the The target sector of the target transmit antenna.
  • the preset communication link establishment condition is that the received signal quality of the receive antenna to the beacon frame meets a preset threshold, and the transmit antenna of the access point corresponding to different communication links and the receive antenna of the station are different. .
  • the STA compares the size of each comparison value, and determines at least two communication links between the STA and the PCP/AP according to a preset communication link establishment condition, where the preset communication link establishment condition includes target reception.
  • the received signal quality of the antenna to the beacon frame satisfies a preset threshold, and the transmit antenna of the PCP/AP and the receive antenna of the STA corresponding to different communication links are different.
  • the sector with the largest comparison value among the comparison values is selected as the target sector of the target transmission antenna, and the above example is continued.
  • the difference between antenna 1 and antenna 2 is 9, for the A.2 sector, the difference between antenna 1 and antenna 2 is 6, for the B.1 sector, the difference between antenna 1 and antenna 2 is -4, for the B.2 sector, then antenna 1 and The difference between the antennas 2 is -6, which is obviously for the A.1 sector, and the difference between the antenna 1 and the antenna 2 is the largest. Therefore, the antenna A is used as the target transmitting antenna of the antenna 1, and the sector 1 of the antenna A is used as the target sector. That is between antenna 1 and antenna A A communication link can be established.
  • the antenna B is used as the target transmitting antenna of the antenna 2
  • the sector 2 of the antenna B is taken as the target sector, that is, the antenna 2 and the antenna B A communication link can be established between them.
  • the received signal quality of the target receive antenna to the beacon frame satisfies a preset threshold.
  • the value, and the transmit antenna of the PCP/AP corresponding to the two different communication links and the receive antenna of the STA are different, so the target transmit antenna and the target sector satisfy the preset communication link establishment condition.
  • steps of analyzing each comparison value and determining whether the preset communication link establishment condition is met are in no particular order, and may be performed simultaneously or sequentially, and are not limited herein. .
  • the comparison value when analyzing and selecting each comparison value, for some equalization situations, the comparison value may not be selected to be the largest, and the second largest or third largest may be selected, and the equalization includes, for example, the received signal quality satisfies the preset threshold.
  • the comparison value In the case of a value, different communication links correspond to the same target transmit antenna, and the comparison value can be equalized and selected according to the specific situation.
  • the station returns the target transmit antenna identifier and the target sector identifier to the access point, including:
  • the station returns a data frame or a sector scan frame to the access point, the data frame or sector scan frame carrying the target transmit antenna identifier and the target sector identifier.
  • the STA returns a data frame or an SSW frame to the PCP/AP, where the data frame or the SSW frame carries the target antenna identifier and the target sector identifier of the target antenna, and optionally, the data frame or the SSW frame may also be A received signal quality measurement result of the beacon frame corresponding to the target sector of the target antenna is included.
  • FIG. 6 it is a schematic diagram of a sector scan frame, where the SSW frame carries a new element Element, and the new element Element includes a target transmit antenna identifier, a target sector identifier, and a target sector identifier of the PCP/AP.
  • the received signal quality measurement result of the beacon frame needs to be explained that the received signal quality measurement result is an option.
  • FIG. 6 is a schematic diagram of a new element of the SSW frame, where the transmit antenna identifier refers to a target transmit antenna identifier of the PCP/AP, and the sector identifier refers to a target sector identifier selected by the STA from the target transmit antenna, and the received signal quality measurement result. It refers to the received signal quality measurement result of the beacon frame corresponding to the target sector of the target transmitting antenna.
  • the target antenna includes the antenna 1 of the PCP/AP, the identifier of the antenna 1 carrying the antenna 1 in the field transmitting antenna 1 of the new element of the SSW frame, and the target sector identifier of the antenna 1, further including the target sector of the antenna 1
  • the received signal quality measurement result of the frame For example, if the target antenna includes the antenna 1 of the PCP/AP, the identifier of the antenna 1 carrying the antenna 1 in the field transmitting antenna 1 of the new element of the SSW frame, and the target sector identifier of the antenna 1, further including the target sector of the antenna 1 The received signal quality measurement result of the frame.
  • the content of the new element Element includes but is not limited to the above, and the new Element can be included in all other applicable frames including the SSW frame.
  • the station uses multiple receiving antennas to simultaneously receive multiple beacon frames sequentially sent by the access point, and one beacon frame corresponds to one sector of one transmitting antenna of the access point, and simultaneously
  • the beacon frame also carries a corresponding transmit antenna identifier and a sector identifier.
  • the station measures received signal quality of each of the plurality of receiving antennas to receive the beacon frame, and determines at least two communication links between the plurality of receiving antennas of the station and the plurality of transmitting antennas of the access point according to the received signal quality And each communication link corresponds to a target transmit antenna identifier and a target sector identifier of the access point, and different transmit and receive antennas of different communication links are different, and the station returns the target transmit antenna identifier and the target sector identifier to Access point, this way can achieve the antenna mode selection corresponding to multiple communication links between the access point and the station.
  • FIG. 10 is a schematic structural diagram of an access point according to an embodiment of the present invention. As shown in the figure, the access point includes:
  • the transceiver unit 300 is configured to, in the beamforming training, sequentially send a beacon frame from each sector of the multiple transmit antennas, where the beacon frame carries a transmit antenna identifier, a sector identifier, and the connection corresponding to the beacon frame.
  • the number of transmit antennas at the ingress measuring the received signal quality of each of the beacon frames by triggering a station that simultaneously receives the beacon frames using multiple receive antennas and determining at least two communication links and each based on the received signal quality a target transmit antenna identifier and a target sector identifier corresponding to the communication link;
  • the STA and the PCP/AP each have a plurality of antennas, and during the beamforming training, the PCP/AP transceiver unit 300 uses the beacon transmission interval BTI period included in the continuous BI. All sectors of multiple antennas transmit beacon Beacon frames in turn, each sector sends A Beacon frame is a sector of a transmit antenna corresponding to an access point of a Beacon frame, and a transmit antenna includes multiple sectors, for example, a PCP/AP includes an antenna A and an antenna B, and the antenna A includes four sectors.
  • the antenna B includes two sectors, and the PCP/AP sequentially transmits the Beacon frame in the four sectors of the antenna A and the two sectors of the antenna B in a continuous BTI period.
  • the PCP/AP may be sequentially
  • the Beacon frame is sent from the four sectors of the transmitting antenna A, and the Beacon frame is sent from the two sectors of the antenna B.
  • the PCP/AP may also first send the Beacon frame from the two sectors of the antenna B, and then transmit the Beacon frame from the two sectors of the antenna B. Four sectors send Beacon frames.
  • the PCP/AP is sent from all sectors in turn, and the loop is repeated.
  • FIG. 7 is a schematic structural diagram of a Beacon frame according to an embodiment of the present invention.
  • a Beacon frame includes multiple domains (for example, a frame control, a period, and a basic service set identifier. And transmitting an antenna identifier, a sector identifier, a number of transmitting antennas, an identifier of the MINO, and other multiple domains.
  • the embodiment of the present invention focuses on a domain for identifying the number of transmitting antennas of the PCP/AP, and is used to identify the The field of the transmit antenna corresponding to the frame (that is, the transmit antenna identifier in the Beacon frame), the field used to identify the sector corresponding to the beacon frame (that is, the sector identifier in the Beacon frame), used to identify the PCP/ Whether the AP supports the MIMO domain (that is, whether the identifier of the MIMIO is supported in the Beacon frame) and the domain for identifying the capability of the PCP/AP and the MIMO (that is, the identifier of the MIMO capability in the Beacon frame), which is used to identify the PCP.
  • the domains of /AP and MIMO capabilities include but are not limited to the following:
  • Short GI short protection interval
  • TX Diversity Whether to support transmit diversity
  • Protocol data unit including Greenfield (physical layer convergence procedure (PLCP) protocol data unit, PPDU);
  • PLCP physical layer convergence procedure
  • the STAs of the STA receive multiple Beacon frames sent by the PCP/AP at the same time, that is, when the PCP/AP sends a Beacon frame, the multiple receiving antennas of the STA can receive the Beacon frame at the same time.
  • the receiving signals of the Beacon frames are different in quality.
  • the transceiver unit 300 is further configured to acquire the target transmit antenna identifier and the target sector identifier returned by the station.
  • the STA transceiver unit 300 may encapsulate the target transmit antenna identifier and the target sector identifier in a data frame or an SSW frame for return, and the PCP/AP receives the data frame or the SSW frame returned by the STA, and performs the same.
  • the target antenna identifier and the target sector identifier are obtained by parsing, and the target transmit antenna identifier and the target sector identifier can be used to locate the target sector of the specific target transmit antenna.
  • one communication link corresponds to one receiving antenna of the STA and one transmitting antenna of the PCP/AP, so the STA returns at least two target transmitting antenna identifiers, and the PCP/AP can The target transmit antenna identified by the returned target transmit antenna identifier is used for further beamforming training to find a transmit/receive mode suitable for each other.
  • the transceiver unit 300 is further configured to perform data communication with the site by using the target sector of the target transmit antenna; or
  • the transceiver unit 300 is further configured to perform beam adjustment between the target sector of the target transmit antenna and a receive antenna corresponding to the station.
  • the transceiver unit 300 can directly use the target sector of the target transmit antenna to perform data communication with the STA, and the target transmit antenna can have multiple Therefore, multiple independent data streams can be established between the PCP/AP and the STA for data communication.
  • beamforming training may be performed between the target sector of the target transmitting antenna corresponding to each determined communication link and the corresponding receiving antenna.
  • Beamforming training is performed between any pair of antennas determined between the PCP/AP and the STA.
  • the PCP/AP performs further beamforming training between the sector 1 of the antenna A and the antenna 1 of the STA. .
  • the station uses multiple receiving antennas to simultaneously receive multiple beacon frames sequentially sent by the access point, and one beacon frame corresponds to one sector of one transmitting antenna of the access point, and simultaneously
  • the beacon frame also carries a corresponding transmit antenna identifier and a sector identifier.
  • the station measures received signal quality of each of the plurality of receiving antennas to receive the beacon frame, and determines at least two communication links between the plurality of receiving antennas of the station and the plurality of transmitting antennas of the access point according to the received signal quality And each communication link corresponds to a target transmit antenna identifier and a target sector identifier of the access point, and different transmit and receive antennas of different communication links are different, and the station returns the target transmit antenna identifier and the target sector identifier to Access point, this way can achieve the antenna mode selection corresponding to multiple communication links between the access point and the station.
  • FIG. 11 is a schematic structural diagram of another access point according to an embodiment of the present invention.
  • the access point 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 access point sequentially transmits a beacon frame from each sector of the multiple transmit antennas, where the beacon frame carries the transmit antenna identifier, the sector identifier, and the access point corresponding to the beacon frame.
  • Number of transmitting antennas measuring each station by triggering a station that uses multiple receiving antennas to simultaneously receive the beacon frame Determining a received signal quality of the beacon frame and determining, according to the received signal quality, at least two communication links and a target transmit antenna identifier and a target sector identifier corresponding to each communication link;
  • the access point acquires the target transmit antenna identifier and the target sector identifier returned by the station.
  • the STA and the PCP/AP each have multiple antennas, and during the beamforming training, the PCP/AP uses all of the multiple antennas it has during the beacon transmission interval BTI period included in the continuous BI.
  • the sector sequentially transmits a beacon Beacon frame, and each sector sends a Beacon frame, that is, one sector of a transmitting antenna corresponding to the access point of the Beacon frame, and one transmitting antenna includes multiple sectors, for example, the PCP/AP includes Antenna A and antenna B, antenna A includes four sectors, and antenna B includes two sectors.
  • PCP/AP is sequentially in four sectors of antenna A and two sectors of antenna B, respectively.
  • the Beacon frame is sent.
  • the PCP/AP may first send the Beacon frame from the four sectors of the transmitting antenna A, and then send the Beacon frame from the two sectors of the antenna B.
  • the PCP/AP may also be from the antenna B first. Two sectors transmit Beacon frames, and then send Beacon frames from four sectors of transmit antenna A. The PCP/AP is sent from all sectors in turn, and the loop is repeated.
  • FIG. 7 is a schematic structural diagram of a Beacon frame according to an embodiment of the present invention.
  • a Beacon frame includes multiple domains (for example, a frame control, a period, and a basic service set identifier. And transmitting an antenna identifier, a sector identifier, a number of transmitting antennas, an identifier of the MINO, and other multiple domains.
  • the embodiment of the present invention focuses on a domain for identifying the number of transmitting antennas of the PCP/AP, and is used to identify the The field of the transmit antenna corresponding to the frame (that is, the transmit antenna identifier in the Beacon frame), the field used to identify the sector corresponding to the beacon frame (that is, the sector identifier in the Beacon frame), used to identify the PCP/ Whether the AP supports the MIMO domain (that is, whether the identifier of the MIMIO is supported in the Beacon frame) and the domain for identifying the capability of the PCP/AP and the MIMO (that is, the identifier of the MIMO capability in the Beacon frame), which is used to identify the PCP.
  • the domains of /AP and MIMO capabilities include but are not limited to the following:
  • Short GI short protection interval
  • TX Diversity Whether to support transmit diversity
  • PLCP physical layer convergence procedure
  • PPDU protocol data unit
  • the STAs of the STA receive multiple Beacon frames sent by the PCP/AP at the same time, that is, when the PCP/AP sends a Beacon frame, the multiple receiving antennas of the STA can receive the Beacon frame at the same time.
  • the receiving signals of the Beacon frames are different in quality.
  • the STA may encapsulate the target transmit antenna identifier and the target sector identifier in a data frame or an SSW frame for return, and the PCP/AP receives the data frame or the SSW frame returned by the STA, and parses the target frame to obtain a target sending.
  • the antenna identifier and the target sector identifier can be targeted to the target sector of the specific target transmit antenna by the target transmit antenna identifier and the target sector identifier.
  • one communication link corresponds to one receiving antenna of the STA and one transmitting antenna of the PCP/AP, so the STA returns at least two target transmitting antenna identifiers, and the PCP/AP can The target transmit antenna identified by the returned target transmit antenna identifier is used for further beamforming training to find a transmit/receive mode suitable for each other.
  • the method further includes
  • the access point uses the target sector of the target transmit antenna to perform data communication with the site; or
  • the access point performs beam adjustment between the target sector of the target transmit antenna and a receive antenna corresponding to the station.
  • the PCP/AP may directly use the target sector of the target transmit antenna to perform data communication with the STA, and the target transmit antenna may have multiple, so the PCP/ Multiple independent data streams can be established between the AP and the STA for data communication.
  • the PCP/AP obtains the target antenna identifier and the target sector identifier returned by the STA, and further performs more accurate beamforming training.
  • the target transmission may be performed on the determined each communication link.
  • Beamforming training is performed between the target sector of the antenna and the corresponding receiving antenna. In the prior art, beamforming training is performed between any pair of antennas determined between the PCP/AP and the STA.
  • the PCP/AP performs further beamforming training between the sector 1 of the antenna A and the antenna 1 of the STA. .
  • the beacon frame includes a domain for identifying whether the access point supports multiple input multiple output MIMO that simultaneously establishes multiple communication links, and a domain for identifying MIMO capability of the access point;
  • the domain for identifying the MIMO capability of the access point includes at least one of the following:
  • the maximum number of channels included in the channel binding whether the power saving mode is supported, whether the short guard interval is supported, whether the long guard interval is supported, whether the transmit diversity is supported, whether the receive diversity is supported, whether the transmit polarization is supported, whether the receive polarization is supported, whether Supports transmission of MIMO signals, support for receiving MIMO signals, and support for mobility.
  • the station uses multiple receiving antennas to simultaneously receive multiple beacon frames sequentially sent by the access point, and one beacon frame corresponds to one sector of one transmitting antenna of the access point, and simultaneously
  • the beacon frame also carries a corresponding transmit antenna identifier and a sector identifier.
  • the station measures received signal quality of each of the plurality of receiving antennas to receive the beacon frame, and determines at least two communication links between the plurality of receiving antennas of the station and the plurality of transmitting antennas of the access point according to the received signal quality And each communication link corresponds to a target transmit antenna identifier and a target sector identifier of the access point, and different transmit and receive antennas of different communication links are different, and the station returns the target transmit antenna identifier and the target sector identifier to Access point, this way can achieve the antenna mode selection corresponding to multiple communication links between the access point and the station.
  • 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

La présente invention concerne un procédé d'apprentissage de formation de faisceau qui comprend les étapes suivantes : pendant l'apprentissage de formation de faisceau, une station utilise de multiples antennes de réception pour recevoir simultanément de multiples trames balises transmises séquentiellement par un point d'accès, et une trame balise correspond à un secteur d'une antenne de transmission du point d'accès ; la station mesure la qualité du signal reçu des trames balises reçues par chacune des multiples antennes de réception, et détermine, en fonction de la qualité du signal reçu, au moins deux liaisons de communication entre les multiples antennes de réception de la station et les multiples antennes de transmission du point d'accès, et l'antenne de transmission cible du point d'accès et le secteur cible qui correspondent à chaque liaison de communication ; différentes liaisons de communication correspondent à différentes antennes de transmission et différentes antennes de réception ; la station renvoie les identifications des antennes de transmission cibles et les identifications des secteurs cibles au point d'accès. En utilisant la présente invention, la sélection des modes d'antenne correspondant aux multiples liaisons de communication entre le point d'accès et la station peut être mise en œuvre.
PCT/CN2015/085624 2015-07-30 2015-07-30 Procédé d'apprentissage de formation de faisceau, station et point d'accès WO2017015967A1 (fr)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102111200A (zh) * 2009-12-23 2011-06-29 英特尔公司 对于波束成形的本地媒体访问控制支持
WO2014074894A1 (fr) * 2012-11-09 2014-05-15 Interdigital Patent Holdings, Inc. Procédés de formation de faisceaux et procédés d'utilisation des faisceaux
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WO2014074894A1 (fr) * 2012-11-09 2014-05-15 Interdigital Patent Holdings, Inc. Procédés de formation de faisceaux et procédés d'utilisation des faisceaux
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