InterDigital Inc (IDCC)

[Gamco]

United States Patent 10,051,654
Tooher , et al. August 14, 2018

Uplink spectrum efficiency


Abstract

Methods and systems are disclosed for reducing control signaling in uplink transmissions. A device, such as a wireless transmit/receive unit, may determine to use a demodulation reference signal (DM-RS) transmission schedule out of a plurality of DM-RS transmission schedules. The DM-RS transmission schedule may be characterized by a DM-RS transmission being mapped to a single orthogonal frequency-division multiplexing (OFDM) symbol per subframe of a data stream. The DM-RS transmission schedule may be characterized by a DM-RS transmission being mapped to a first subset of subcarriers of an OFDM symbol of a subframe of a data stream and Physical Uplink Shared Channel (PUSCH) transmission or Physical Uplink Control Channel (PUCCH) control information being mapped to a second set of subcarriers of the OFDM symbol. The first set of subcarriers may be different than the second set of subcarriers. The data stream may be transmitted according to the DM-RS transmission schedule.



Inventors:
Tooher; J. Patrick (Montreal, CA), Marinier; Paul (Brossard, CA), Rudolf; Marian (Montreal, CA)

Applicant:


Name

City

State

Country

Type


INTERDIGITAL PATENT HOLDINGS, INC.
Wilmington
DE
US


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


Family ID:
1000003471260

Appl. No.:
14/760,407

Filed:
January 16, 2014

PCT Filed:
January 16, 2014

PCT No.:
PCT/US2014/011811

371(c)(1),(2),(4) Date:
July 10, 2015

PCT Pub. No.:
WO2014/113546

PCT Pub. Date:
July 24, 2014


Prior Publication Data






Document Identifier

Publication Date

US 20160192385 A1 Jun 30, 2016



Related U.S. Patent Documents









Application Number

Filing Date

Patent Number

Issue Date

61863324 Aug 7, 2013
61821168 May 8, 2013
61753147 Jan 16, 2013




Current U.S. Class: 1/1
Current CPC Class: H04W 72/1268 (20130101); H04L 5/0048 (20130101); H04W 72/0446 (20130101); H04L 27/2602 (20130101); H04L 27/2611 (20130101); H04L 5/0051 (20130101)
Current International Class: H04W 72/04 (20090101); H04L 27/26 (20060101); H04W 72/12 (20090101); H04L 5/00 (20060101)

PPP