Title:
PRECODING A TRANSMISSION FROM A TWO-DIMENSIONAL ANTENNA ARRAY USING A PARTIALLY RESHAPED CODEBOOK
Document Type and Number:
WIPO Patent Application WO/2016/024912
Kind Code:
A3
Abstract:
A transmitting radio node (10) precodes a transmission from an antenna array, which includes antenna elements arranged along at least two axes, using a main codebook which is representable as a Kronecker product of a first codebook and a second codebook, where the first codebook comprises predetermined sub-precoders and the second codebook comprises configurable sub-precoders. A receiving radio node (20) may benefit from adaptive beamforming made possible by the configurability of the main codebook, while still using a stable format, which remains valid also after reconfiguration, for the exchange of reference signals and corresponding feedback information.
Inventors:
WERNERSSON NIKLAS (SE)
BERGMAN SVANTE (SE)
BERGMAN SVANTE (SE)
Application Number:
PCT/SE2015/051162
Publication Date:
September 22, 2016
Filing Date:
November 04, 2015
Export Citation:
Assignee:
ERICSSON TELEFON AB L M (PUBL) (SE)
International Classes:
H04B7/04
Foreign References:
| US20140226702A1 | 2014-08-14 |
Other References:
CATT: "Codebook structure for FD-MIMO", vol. RAN WG1, no. Beijing, China; 20150824 - 20150828, 23 August 2015 (2015-08-23), XP051001369, Retrieved from the Internet
SAMSUNG: "4Tx and 8Tx feedback framework for Rel. 10", 3GPP DRAFT; R1-104602 FEEDBACK FRAMEWORK_REV3, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Madrid, Spain; 20100823 - 20100827, 17 August 2010 (2010-08-17), XP050598602
SAMSUNG: "Performance Evaluation of Class B CSI Reporting", vol. RAN WG1, no. Malmö, Sweden; 20151005 - 20151009, 7 October 2015 (2015-10-07), XP051041908, Retrieved from the Internet
ALCATEL-LUCENT SHANGHAI BELL ET AL: "Proposals for Beamformed CSI-RS based 3D MIMO Transmission Scheme", vol. RAN WG1, no. Beijing, China; 20150824 - 20150828, 23 August 2015 (2015-08-23), XP051039347, Retrieved from the Internet
SAMSUNG: "4Tx and 8Tx feedback framework for Rel. 10", 3GPP DRAFT; R1-104602 FEEDBACK FRAMEWORK_REV3, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Madrid, Spain; 20100823 - 20100827, 17 August 2010 (2010-08-17), XP050598602
SAMSUNG: "Performance Evaluation of Class B CSI Reporting", vol. RAN WG1, no. Malmö, Sweden; 20151005 - 20151009, 7 October 2015 (2015-10-07), XP051041908, Retrieved from the Internet
ALCATEL-LUCENT SHANGHAI BELL ET AL: "Proposals for Beamformed CSI-RS based 3D MIMO Transmission Scheme", vol. RAN WG1, no. Beijing, China; 20150824 - 20150828, 23 August 2015 (2015-08-23), XP051039347, Retrieved from the Internet
Attorney, Agent or Firm:
BOU FAICAL, Roger (Patent Unit Kista RAN1, Stockholm, SE)
Download PDF: