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