WO2017191900A1 - Entraînement de formation de faisceau utilisant la polarisation - Google Patents

Entraînement de formation de faisceau utilisant la polarisation Download PDF

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Publication number
WO2017191900A1
WO2017191900A1 PCT/KR2017/003533 KR2017003533W WO2017191900A1 WO 2017191900 A1 WO2017191900 A1 WO 2017191900A1 KR 2017003533 W KR2017003533 W KR 2017003533W WO 2017191900 A1 WO2017191900 A1 WO 2017191900A1
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WO
WIPO (PCT)
Prior art keywords
polarization
sta
sector
brp
setting information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2017/003533
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English (en)
Korean (ko)
Inventor
조경태
김진민
박성진
조한규
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
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LG Electronics Inc
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Filing date
Publication date
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Publication of WO2017191900A1 publication Critical patent/WO2017191900A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • H04B7/0491—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more sectors, i.e. sector diversity
    • 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
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • 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
    • H04B7/10—Polarisation diversity; Directional diversity

Definitions

  • the Institute of Electrical and Electronics Engineers (IEEE) 802.11ad standard is a high-speed wireless communications standard that operates in the band above 60 GHz.
  • the reach of the signal is around 10 meters, but the throughput can support more than 6 Gbps. Since operating at higher frequency bands, signal propagation is dominated by ray-like propagation.
  • Signal quality may be improved as the TX (remit) or RX (receive) antenna beam is aligned to face a strong spatial signal path.
  • a plurality of independent beamforming may be performed simultaneously.
  • the present invention provides a method and apparatus for performing beamforming training using polarization in a wireless communication system.
  • the polarization setting information may include a polarization mismatch indicator for requesting feedback on how each polarization channel received by the second STA is modified.
  • FIG. 8 is a block diagram illustrating an apparatus in which an embodiment of the present invention is implemented.
  • the following describes by way of example a wireless communication system operating in a frequency band of 60 GHz or 45 GHz or higher. Multiple channels may be provided, for example one channel may have a bandwidth of 2.16 GHz.
  • a station may be called various names such as a wireless device, a mobile station (MS), a network interface device, a wireless interface device, or simply a user.
  • a basic service set is a building block of a wireless local area network (WLAN) based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard.
  • the BSS includes a plurality of STAs capable of directly communicating with each other.
  • WLAN provides two types of independent BSS (IBSS) and personal BSS (PBSS).
  • IBSS is a basic type.
  • PBSS is an ad hoc network and is a type of wireless local area network (WLAN) in which each STA can directly communicate with each other.
  • One STA in the PBSS may serve as a PBSS control point (PCP).
  • the PCP may provide beacon transmission, service period (SP) allocation, and the like.
  • SP service period
  • An access point is an entity that provides access between multiple BSSs.
  • One STA in the BSS may serve as an AP, and STAs belonging to different BSSs may communicate through the AP.
  • the AP manages beacon transmission and association.
  • the AP and the PCP are referred to as APs, not separately.
  • the STA may include a non-AP STA or an AP, unless the STA distinguishes a function from the AP.
  • the STA When described in communication with a STA to an AP, the STA may be interpreted as a non-AP STA.
  • the STA may be a non-AP STA or an AP if it is described in STA-to-STA communication or otherwise requires a function of the AP.
  • STA1 is an initiator that initiates beamforming (BF) training.
  • STA2 participating in BF training is a responder.
  • the BF training begins with the SLS by the initiator.
  • the SLS process includes an initiator sector sweep (ISS) for training the initiator link, a responder sector sweep (RSS) for training the responder link, a sector sweep (SSW) feedback, and an SSW ACK.
  • ISS initiator sector sweep
  • RSS responder sector sweep
  • SSW sector sweep
  • SSW SSW ACK
  • the sector may correspond to a specific antenna beam or pattern.
  • the TX (transmit) sector is the sector for the TX antenna
  • the RX (receive) sector is the sector for the RX antenna.
  • the BRP process may include a BRP setup subphase, a multiple sector ID detection (MID) subphase, a beam combining (BC) subphase, and the like.
  • MID multiple sector ID detection
  • BC beam combining
  • the existing IEEE 802.11ad-based beamforming training is based on a single stream. That is, only one beamforming is possible at a time.
  • simultaneous beamforming of multiple beams using polarization is proposed.
  • STAs are adjacent to each other or when a set of sectors selected in the previous SLS overlap
  • interference between different STAs may be prevented in a beam refinement process.
  • a technique for reducing interference between beams is proposed.
  • the polarization type indicates an orientation of an electric field emitted from an antenna and may be, for example, linear polarization, circular polarization, mixed polarization, or the like.
  • linear polarization may include vertical polarization (VP) and horizontal polarization (HP).
  • circular polarization may include left-hand circular polarization (LHCP) and right-hand circular polarization (RHCP).
  • LHCP left-hand circular polarization
  • RHCP right-hand circular polarization
  • Mixed polarized light means that linear polarized light and circular polarized light can be used together. In the following, simultaneous beamforming using VP and HP is illustrated, but the type and number of polarization types are not limited.
  • 3 shows an example of beamforming using polarization.
  • the initiator transmits a frame having the same sector information to one or more responders over a plurality of polarization channels.
  • the frame may include an SSW frame.
  • Initiator-transmit sector sweep (I-TXSS) can be performed simultaneously by transmitting SSW frames to all respondents regardless of their polarization capability.
  • 5 shows another example of beamforming using polarization.
  • the I-TXSS by the initiator is performed during the first phase, and the responder-transmit sector sweep (R-TXSS) by the responder is performed during the second phase.
  • the initiator sends a beamforming frame to the responder through the plurality of polarization channels.
  • the responder selects the best polarization channel and sends a beamforming frame to the initiator through the selected polarization channel during the second phase.
  • At least one of the SSW feedback and the SSW ACK frame may include information for requesting BRP execution.
  • the beacon frame and the SSW frame are transmitted over the polarization channel.
  • the SSW feedback frame may include information about polarization mismatch.
  • FIG 7 shows an example of an SSW feedback frame format according to an embodiment of the present invention.
  • the Selected Sector Polarization field indicates polarization information for the sector indicated by the sector selection field.
  • FIG. 8 is a block diagram illustrating an apparatus in which an embodiment of the present invention is implemented.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un entraînement de formation de faisceau utilisant la polarisation. Une première station (STA) effectue, conjointement avec une seconde station, un processus de balayage de niveau de secteur (SLS pour Sector Level Sweep) pour un balayage de secteur et un processus de protocole d'affinement de faisceau (BRP pour Beam Refinement Protocol). Pendant le processus de protocole BRP, la première station STA transmet, à la seconde station, une demande d'établissement de protocole BRP comportant des informations de réglage de polarisation associées à un canal polarisé qui doit être utilisé pendant le processus de protocole BRP.
PCT/KR2017/003533 2016-05-06 2017-03-31 Entraînement de formation de faisceau utilisant la polarisation Ceased WO2017191900A1 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US201662332493P 2016-05-06 2016-05-06
US62/332,493 2016-05-06
US201662333823P 2016-05-09 2016-05-09
US62/333,823 2016-05-09
US201662333843P 2016-05-10 2016-05-10
US62/333,843 2016-05-10
US201662406417P 2016-10-11 2016-10-11
US62/406,417 2016-10-11

Publications (1)

Publication Number Publication Date
WO2017191900A1 true WO2017191900A1 (fr) 2017-11-09

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Application Number Title Priority Date Filing Date
PCT/KR2017/003533 Ceased WO2017191900A1 (fr) 2016-05-06 2017-03-31 Entraînement de formation de faisceau utilisant la polarisation

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WO (1) WO2017191900A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020116883A1 (fr) * 2018-12-06 2020-06-11 엘지전자 주식회사 Appareil et procédé de transmission de données à l'aide d'une antenne polarisée dans un système audiovisuel sans fil
WO2023059021A1 (fr) * 2021-10-06 2023-04-13 엘지전자 주식회사 Émetteur-récepteur cohérent à base de polarisation non homogène pour alignement de faisceau et procédé associé

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014074894A1 (fr) * 2012-11-09 2014-05-15 Interdigital Patent Holdings, Inc. Procédés de formation de faisceaux et procédés d'utilisation des faisceaux
US20150244432A1 (en) * 2012-05-22 2015-08-27 Mediatek Singapore Pte. Ltd. Method and Apparatus of Beam Training for MIMO Operation and Multiple Antenna Beamforming Operation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150244432A1 (en) * 2012-05-22 2015-08-27 Mediatek Singapore Pte. Ltd. Method and Apparatus of Beam Training for MIMO Operation and Multiple Antenna Beamforming Operation
WO2014074894A1 (fr) * 2012-11-09 2014-05-15 Interdigital Patent Holdings, Inc. Procédés de formation de faisceaux et procédés d'utilisation des faisceaux

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
JO, KYUNG TAE ET AL.: "Generalized Multi-Beamforming for 11ay", IEEE 802.11-16/0398R1, 16 March 2016 (2016-03-16), XP055442547 *
JO, KYUNG TAE ET AL.: "Multi-Beamforming in Polarized Channels for 11 ay", IEEE 802.11-16/0092R1, 20 January 2016 (2016-01-20), XP055442549 *
THOMAS, NITSCHE ET AL.: "IEEE 802. 11 ad: Directional 60 GHz Communication for Multi-Gbps Wi-Fi", IEEE COMMUNICATIONS MAGAZINE, vol. 52, no. issue: 12, 11 December 2014 (2014-12-11), XP011567636 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020116883A1 (fr) * 2018-12-06 2020-06-11 엘지전자 주식회사 Appareil et procédé de transmission de données à l'aide d'une antenne polarisée dans un système audiovisuel sans fil
US11438040B2 (en) 2018-12-06 2022-09-06 Lg Electronics Inc. Data transmission apparatus and method using polarized antenna in wireless AV system
WO2023059021A1 (fr) * 2021-10-06 2023-04-13 엘지전자 주식회사 Émetteur-récepteur cohérent à base de polarisation non homogène pour alignement de faisceau et procédé associé

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