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1. WO2020221423 - TRANSMISSION OF REFERENCE SIGNALS FROM A TERMINAL DEVICE

Publication Number WO/2020/221423
Publication Date 05.11.2020
International Application No. PCT/EP2019/060944
International Filing Date 29.04.2019
IPC
H04B 7/06 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
06at the transmitting station
CPC
H04B 7/0469
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
0413MIMO systems
0456Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
046taking physical layer constraints into account
0469taking special antenna structures, e.g. cross polarized antennas into account
H04B 7/0478
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
0413MIMO systems
0456Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
0478Special codebook structures directed to feedback optimization
H04B 7/0619
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
06at the transmitting station
0613using simultaneous transmission
0615of weighted versions of same signal
0619using feedback from receiving side
H04L 1/0003
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
0002by adapting the transmission rate
0003by switching between different modulation schemes
H04L 1/0009
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
0009by adapting the channel coding
H04W 52/365
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
52Power management, e.g. TPC [Transmission Power Control], power saving or power classes
04TPC
30using constraints in the total amount of available transmission power
36with a discrete range or set of values, e.g. step size, ramping or offsets
365Power headroom reporting
Applicants
  • TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) [SE]/[SE]
Inventors
  • PETERSSON, Sven
  • NILSSON, Andreas
  • ATHLEY, Fredrik
  • TIMO, Roy
  • ZHANG, Xinlin
Agents
  • ERICSSON
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) TRANSMISSION OF REFERENCE SIGNALS FROM A TERMINAL DEVICE
(FR) ÉMISSION DE SIGNAUX DE RÉFÉRENCE À PARTIR D'UN DISPOSITIF TERMINAL
Abstract
(EN)
There is provided mechanisms for transmission of reference signals. A method is performed by a terminal device. The terminal device comprises at least two physical antenna ports. Each physical antenna port is fed by its own power amplifier. The method comprises transmitting, in only the physical antenna port is fed by the power amplifier configured for highest total output power of all the power amplifiers, as many uplink reference signals as there are physical antenna ports in total.
(FR)
L'invention concerne des mécanismes d'émission de signaux de référence. Un procédé est effectué par un dispositif terminal. Le dispositif terminal comprend au moins deux ports d'antenne physique. Chaque port d'antenne physique est alimenté par son propre amplificateur de puissance. Le procédé consiste à émettre, uniquement dans le port d'antenne physique qui est alimenté par l'amplificateur de puissance configuré pour posséder la puissance de sortie totale la plus élevée parmi tous les amplificateurs de puissance, autant de signaux de référence de liaison montante qu'il existe de ports d'antenne physique au total.
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