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1. US20110268028 - Uplink sounding reference signals configuration and transmission

Office United States of America
Application Number 13078531
Application Date 01.04.2011
Publication Number 20110268028
Publication Date 03.11.2011
Grant Number 09749968
Grant Date 29.08.2017
Publication Kind B2
IPC
H04W 52/32
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
52Power management
04Transmission power control
30using constraints in the total amount of available transmission power
32TPC of broadcast or control channels
H04L 5/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
5Arrangements affording multiple use of the transmission path
H04L 27/26
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
26Systems using multi-frequency codes
CPC
H04L 5/0048
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
5Arrangements affording multiple use of the transmission path
003Arrangements for allocating sub-channels of the transmission path
0048Allocation of pilot signals, i.e. of signals known to the receiver
H04L 27/2613
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
26Systems using multi-frequency codes
2601Multicarrier modulation systems
2602Signal structure
261Details of reference signals
2613Structure of the reference signals
H04B 7/0404
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
0404the mobile station comprising multiple antennas, e.g. to provide uplink diversity
H04W 52/325
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
32TPC of broadcast or control channels
325Power control of control or pilot channels
Applicants Janet A. Stern-Berkowitz
InterDigital Patent Holdings, Inc.
Chang-Soo Koo
Peter S. Wang
Sung-Hyuk Shin
John W. Haim
Stephen G. Dick
Mihaela C. Beluri
Inventors Janet A. Stern-Berkowitz
Chang-Soo Koo
Peter S. Wang
Sung-Hyuk Shin
John W. Haim
Stephen G. Dick
Mihaela C. Beluri
Agents Volpe and Koenig, P.C.
Title
(EN) Uplink sounding reference signals configuration and transmission
Abstract
(EN)

Methods and apparatus for sounding reference signals (SRS) configuration and transmission. The methods include receiving configuration of wireless transmit/receive unit (WTRU)-specific SRS subframes for transmitting SRS and upon receipt of a trigger, transmitting the SRS for a number of antennas. The SRS transmissions may occur in each subframe of a duration of WTRU-specific SRS subframes that start a number of WTRU-specific SRS subframes after a triggering subframe. For multiple SRS transmissions from multiple antennas, cyclic shift multiplexing and different transmission combs may be used. The cyclic shift for an antenna may be determined from a cyclic shift reference value. The cyclic shift determined for each antenna providing a maximum distance between cyclic shifts for the antennas transmitting SRS in a same WTRU-specific subframe. SRS transmissions from multiple antennas in the WTRU-specific subframe may be done in parallel. Methods for handling collisions between SRS and physical channels are presented.

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