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Title:
INTERFERENCE SUPPRESSION
Document Type and Number:
WIPO Patent Application WO/2020/221874
Kind Code:
A3
Abstract:
Various communication systems may benefit from improved reduction of cross link interference. For example, certain embodiments may benefit from cross link interference suppression. A method, in certain embodiments, may include receiving, by a first network entity, at least one downlink precoder map from a second network entity over at least one interface (401). The method may also include estimating, by the first network entity, at least one basis of at least one common spatial sub-space associated with at least one, or all, identified BS-BS CLI source (407). In addition, the method may include for each reception associated with the first network entity, spatially projecting, by the first network entity, at least one interference rejection combining estimated interference covariance matrix into at least one orthogonal projector sub-space (411).

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Inventors:
ESSWIE ALI (DK)
PEDERSEN KLAUS INGEMANN (DK)
Application Number:
PCT/EP2020/062066
Publication Date:
December 03, 2020
Filing Date:
April 30, 2020
Export Citation:
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Assignee:
NOKIA TECHNOLOGIES OY (FI)
International Classes:
H04J11/00; H04B7/0413; H04W72/04
Domestic Patent References:
WO2013165283A12013-11-07
Other References:
NOKIA ET AL: "Dynamic TDD Interference Mitigation Concepts in NR", vol. RAN WG1, no. Spokane, USA; 20170116 - 20170120, 16 January 2017 (2017-01-16), XP051208660, Retrieved from the Internet [retrieved on 20170116]
ALI A ESSWIE ET AL: "Cross-Link Interference Suppression By Orthogonal Projector For 5G Dynamic TDD URLLC Systems", ARXIV.ORG, CORNELL UNIVERSITY LIBRARY, 201 OLIN LIBRARY CORNELL UNIVERSITY ITHACA, NY 14853, 16 January 2020 (2020-01-16), XP081579982
ALI A ESSWIE ET AL: "Inter-Cell Radio Frame Coordination Scheme Based on Sliding Codebook for 5G TDD Systems", ARXIV.ORG, CORNELL UNIVERSITY LIBRARY, 201 OLIN LIBRARY CORNELL UNIVERSITY ITHACA, NY 14853, 8 February 2019 (2019-02-08), XP081026789
Attorney, Agent or Firm:
NOKIA EPO REPRESENTATIVES (FI)
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