InterDigital Inc (IDCC)

[Gamco]

United States Patent 9,973,404
Pelletier , et al. May 15, 2018

Connectivity robustness in wireless systems


Abstract

Systems and methods are contemplated for reconfiguration of one or more MAC instances while the WTRU is operating using dual- or multi-MAC instance connectivity. For example, upon reception of RRC reconfiguration information that modifies one or more secondary MAC instances, the WTRU may transmit a reconfiguration complete message to a Macro eNB (MeNB) and may synchronize to small-cell or secondary eNB (SeNB), for example if triggered by one or more of an RRC flag, a physical downlink control channel (PDCCH) order (MeNB/SeNB), MAC activation information, etc. For example, the WTRU may synchronize to the SeNB for specific type(s) of RRC reconfigurations, but not other type(s) of RRC reconfigurations. Although examples may be described in terms of dual connectivity, the WTRU may establish connectivity and perform mobility procedures with more than two radio access network (RAN) nodes (e.g., eNBs), and the embodiments described may be equally applicable to those scenarios.



Inventors:
Pelletier; Ghyslain (Montreal, CA), Marinier; Paul (Brossard, CA), Pani; Diana (Montreal, CA)

Applicant:


Name

City

State

Country

Type


INTERDIGITAL PATENT HOLDINGS, INC.
Wilmington
DE
US


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


Family ID:
1000003295789

Appl. No.:
15/033,619

Filed:
October 30, 2014

PCT Filed:
October 30, 2014

PCT No.:
PCT/US2014/063263

371(c)(1),(2),(4) Date:
April 29, 2016

PCT Pub. No.:
WO2015/066385

PCT Pub. Date:
May 07, 2015


Prior Publication Data






Document Identifier

Publication Date

US 20160285716 A1 Sep 29, 2016



Related U.S. Patent Documents









Application Number

Filing Date

Patent Number

Issue Date

61937990 Feb 10, 2014
61897550 Oct 30, 2013




Current U.S. Class: 1/1
Current CPC Class: H04L 43/0811 (20130101); H04L 5/0098 (20130101); H04L 61/6022 (20130101); H04W 74/0833 (20130101); H04W 72/0413 (20130101); H04W 76/20 (20180201); H04L 5/001 (20130101); H04W 76/15 (20180201)
Current International Class: H04L 12/26 (20060101); H04L 29/12 (20060101); H04W 72/04 (20090101); H04L 5/00 (20060101); H04W 74/08 (20090101)

PPP