InterDigital Inc (IDCC)

[Gamco]

United States Patent 9,913,275
Reznik , et al. March 6, 2018

Method and apparatus for sending feedback for a downlink shared service transmitted to a plurality of wireless transmit/receive units


Abstract

A wireless transmit/receive units (WTRUs) receives a downlink transmission from a Node-B and decodes the downlink transmission. If the decoding is not successful, the WTRU sends a pre-defined burst signifying a negative acknowledgement (NACK) to the Node-B via a contention-based shared feedback channel. The pre-defined burst may be sent only once without requiring an acknowledgement. The Node-B calibrates a downlink transmit power so that the downlink transmission is transmitted to the WTRUs with a high likelihood. The Node-B may send a downlink transmission including multiple data streams processed using different modulation and coding schemes so that a WTRU having a high signal quality decodes all data streams while a WTRU having a low signal quality decodes less than all data streams. The Node-B sends a channel quality indicator (CQI) threshold so that each WTRU determines a data stream to report feedback based on the CQI threshold and a measured CQI.



Inventors:
Reznik; Alexander (Pennington, NJ), Zeira; Eldad M. (Huntington, NY), Cave; Christopher R. (Dollard-des-Ormeaux, CA), Marinier; Paul (Brossard, CA)

Applicant:


Name

City

State

Country

Type


INTERDIGITAL TECHNOLOGY CORPORATION
Wilmington
DE
US


Assignee:
InterDigital Technology Corporation (Wilmington, DE)


Family ID:
1000003157498

Appl. No.:
15/227,667

Filed:
August 3, 2016


Prior Publication Data






Document Identifier

Publication Date

US 20160345328 A1 Nov 24, 2016



Related U.S. Patent Documents









Application Number

Filing Date

Patent Number

Issue Date

13956777 Aug 1, 2013 9439192
11869923 Aug 13, 2013 8509076
60883594 Jan 5, 2007
60828881 Oct 10, 2006




Current U.S. Class: 1/1
Current CPC Class: H04W 72/0453 (20130101); H04L 1/0025 (20130101); H04L 1/0073 (20130101); H04L 1/1671 (20130101); H04W 52/146 (20130101); H04W 52/228 (20130101); H04W 52/247 (20130101); H04W 52/325 (20130101); H04L 1/1887 (20130101); H04W 4/06 (20130101)
Current International Class: H04W 80/04 (20090101); H04W 52/32 (20090101); H04W 52/22 (20090101); H04W 52/24 (20090101); H04W 72/04 (20090101); H04L 1/00 (20060101); H04L 1/16 (20060101); H04L 1/18 (20060101); H04W 52/14 (20090101); H04W 4/06 (20090101)

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