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1. (WO2018195841) METHOD AND DEVICE FOR DIRECTIONAL RECIPROCITY IN UPLINK AND DOWNLINK COMMUNICATION

Pub. No.:    WO/2018/195841    International Application No.:    PCT/CN2017/082135
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Fri Apr 28 01:59:59 CEST 2017
IPC: H04B 7/06
Applicants: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
FAN, Rui
Inventors: FAN, Rui
REIAL, Andres
RUNE, Johan
TIDESTAV, Claes
Title: METHOD AND DEVICE FOR DIRECTIONAL RECIPROCITY IN UPLINK AND DOWNLINK COMMUNICATION
Abstract:
The disclosure relates to devices, methods, and computer programs in mobile communications in order to enhance signal transmission. Specifically, it relates to methods in a network node. The method comprises receiving S1 a signal with at least a partly known content and applying S2 to the received signal at least one set of reception weights out of a plurality predefined sets of reception weights, wherein each set of reception weights is associated with at least one reception beam parameter describing a reception beam configuration. The method further comprises determining S3, based on one or more predetermined criteria, at least one set of reception weights out of the applied predefined sets of reception weights and generating S4 at least one set of transmission weights. Said at least one set of transmission weights is based on the at least one reception beam parameter The method further comprise transmitting S5 a signal using the generated at least one set of transmission weights.