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1. (WO2018145757) METHODS FOR SELECTING A CODEBOOK

Pub. No.:    WO/2018/145757    International Application No.:    PCT/EP2017/052971
Publication Date: Fri Aug 17 01:59:59 CEST 2018 International Filing Date: Sat Feb 11 00:59:59 CET 2017
IPC: H04B 7/0456
H04B 7/0404
H04L 25/03
Applicants: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Inventors: ATHLEY, Fredrik
PETERSSON, Sven
NILSSON, Andreas
Title: METHODS FOR SELECTING A CODEBOOK
Abstract:
A method (10) performed in a network node (2) for selecting a codebook is provided. The network node (2) supports a multiple antenna communication mode for communication with a communication device (3). The method (10) comprises measuring (11) received power of a signal from the communication device (3), and selecting (12), based at least on the received power, one of: a first codebook adapted for a coverage limited scenario and a second codebook adapted for an interference limited scenario, for use in codebook based precoding in uplink. A corresponding method (40) in a communication device (3), a network node (2), communication device (3), computer programs and computer program products are also provided.