【EP3553968A1】单载波宽带波束成形方法和系统【专利】

Printed by Jouve, 75001 PARIS (FR)(19)E P 3 553 968A 1TEPZZ¥55¥968A_T(11)EP 3 553 968A1(12)EUROPEAN PATENT APPLICATION(43)Date of publication:16.10.2019Bulletin 2019/42(21)Application number: 19168722.7(22)Date of filing: 11.04.2019(51)Int Cl.:H04B 7/06(2006.01)(84)Designated Contracting States:AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA MEDesignated Validation States: KH MA MD TN(30)Priority:13.04.2018US 201862657202 P (71)Applicant: Peraso Technologies Inc.Toronto, Ontario M5J 2L7 (CA)(72)Inventors:•HANSEN, Christopher James Los Altos, California 94024 (US)•CO STA, NelsonGrimsby, Ontario L3M 1P6 (CA)(74)Representative: HGF Limited4th FloorMerchant Exchange17-19 Whitworth Street West Manchester M1 5WG (GB)(54)SINGLE-CARRIER WIDEBAND BEAMFORMING METHOD AND SYSTEM(57)A method in a transmitter station for establishinga wireless link with a receiver station includes: sending beamforming training data to the receiver station; respon-sive to sending the beamforming training data, receiving from the receiver station: beamforming feedback data and a beamforming feedback mode indicator selectedfrom (i) a multi-subcarrier feedback mode, and (ii) a single carrier feedback mode; when the beamforming feedback mode indicator corresponds to the single carrier feed-back mode, obtaining beamforming parameters based on the beamforming feedback data.EP 3 553 968A12510152025303540455055DescriptionCROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority from U.S. provisional patent application no. 62/657202, filed April 13, 2018 and entitled "SINGLE CARRIER DIGITAL BEAMFORMING", the contents of which is incorporated herein by reference.FIELD[0002]The specification relates generally to wireless communications, and specifically to a single-carrier wideband beamforming method and system.BACKGROUND[0003]Wireless communications can be conducted in a wide variety of environments, particularly by mobile devices whose physical environments can be fluid. Various modulation mechanisms (e.g. orthogonal frequency-division multi-plexing (OFDM)) are implemented by such devices to enhance the speed and/or reliability of wireless communications.Such modulation mechanisms may not be suitable in every communication environment, however, and may result in an increased computational load on the devices.SUMMARY[0004]Aspects of the present invention provide methods and apparatus as set forth in the appended claims.[0005]An aspect of the specification provides a method in a transmitter station for establishing a wireless link with a receiver station, the method comprising: sending beamforming training data to the receiver station; responsive to sending the beamforming training data, receiving from the receiver station: beamforming feedback data; and a beamforming feedback mode indicator selected from (i) a multi-subcarrier feedback mode, and (ii) a single carrier feedback mode;when the beamforming feedback mode indicator corresponds to the single carrier feedback mode, obtaining beamforming parameters based on the beamforming feedback data.[0006] A further aspect of the specification provides a method in a receiver station device for establishing a wireless link with a transmitter station, comprising: receiving beamforming training data from the transmitter station; determining an active beamforming mode selected from (i) a multi-subcarrier feedback mode, and (ii) a single carrier feedback mode;responsive to determining that the active beamforming mode is the single carrier feedback mode, generating an uncom-pressed time-domain channel representation based on the beamforming training data; and sending, to the transmitter station, (i) beamforming feedback data based on the an uncompressed time-domain channel representation, and (ii) an indicator of the active beamforming mode.[0007]An aspect of the present invention provides a wireless communication device arranged to perform a method as set forth in the appended claims.BRIEF DESCRIPTIONS OF THE DRAWINGS [0008]Embodiments are described with reference to the following figures, in which:FIG. 1 depicts a wireless communication system;FIG. 2 depicts an example beamforming method; and FIG. 3 depicts a further example beamforming method.DETAILED DESCRIPTION[0009]FIG. 1 depicts a wireless communications system 100, including a plurality of wireless devices. In particular,FIG. 1 illustrates an access point 104 connected with a client device 108 via a wireless link 112. The access point 104can be, for example, a wireless router connecting the client device 108 to a wide area network (not shown) such as the Internet. The access point 104 may also be, for example, a media server, a home computer, a mobile device, and the like. The client device 108, meanwhile, can be a mobile device such as a smartphone, a tablet computer and the like.The client device 108 may also be an access point itself, for example in implementations in which the devices 104 and 108 are components in a backhaul infrastructure. More generally, the wireless devices 104 and 108 can include any suitable combination of computing devices with wireless communication assemblies suitable for communicating with one another. The devices 104 and 108 are referred to herein as an access point and a client device simply for illustrative。