InterDigital Inc (IDCC)

[Gamco]

United States Patent 9,749,968
Stern-Berkowitz , et al. August 29, 2017

Uplink sounding reference signals configuration and transmission


Abstract

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.



Inventors:
Stern-Berkowitz; Janet A. (Little Neck, NY), Koo; Chang-Soo (Melville, NY), Wang; Peter S. (E. Setauket, NY), Shin; Sung-Hyuk (Northvale, NJ), Haim; John W. (Baldwin, NY), Dick; Stephen G. (Nesconset, NY), Beluri; Mihaela C. (Huntington, NY)

Applicant:


Name

City

State

Country

Type


Stern-Berkowitz; Janet A.
Koo; Chang-Soo
Wang; Peter S.
Shin; Sung-Hyuk
Haim; John W.
Dick; Stephen G.
Beluri; Mihaela C.
Little Neck
Melville
E. Setauket
Northvale
Baldwin
Nesconset
Huntington
NY
NY
NY
NJ
NY
NY
NY
US
US
US
US
US
US
US


Assignee:
InterDigital Patent Holdings, Inc. (Wilmington, DE)


Family ID:
1000002803763

Appl. No.:
13/078,531

Filed:
April 1, 2011


Prior Publication Data






Document Identifier

Publication Date

US 20110268028 A1 Nov 3, 2011



Related U.S. Patent Documents









Application Number

Filing Date

Patent Number

Issue Date

61320576 Apr 2, 2010
61330158 Apr 30, 2010
61388992 Oct 1, 2010




Current U.S. Class: 1/1
Current CPC Class: H04W 52/325 (20130101); H04L 5/0048 (20130101); H04L 27/2613 (20130101)
Current International Class: H04W 52/32 (20090101); H04L 5/00 (20060101); H04L 27/26 (20060101)
Field of Search: ;370/329

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