US 11,882,516 B2
Cell detection, identification, and measurements for small cell deployments
Paul Marinier, Brossard (CA); Ghyslain Pelletier, Montreal (CA); J. Patrick Tooher, Montreal (CA); and Diana Pani, Montreal (CA)
Assigned to InterDigital Patent Holdings, Inc., Wilmington, DE (US)
Filed by InterDigital Patent Holdings, Inc., Wilmington, DE (US)
Filed on Jul. 15, 2019, as Appl. No. 16/512,079.
Application 16/512,079 is a continuation of application No. 14/782,023, granted, now 10,405,267, previously published as PCT/US2014/032891, filed on Apr. 3, 2014.
Claims priority of provisional application 61/955,626, filed on Mar. 19, 2014.
Claims priority of provisional application 61/933,235, filed on Jan. 29, 2014.
Claims priority of provisional application 61/897,326, filed on Oct. 30, 2013.
Claims priority of provisional application 61/882,584, filed on Sep. 25, 2013.
Claims priority of provisional application 61/821,177, filed on May 8, 2013.
Claims priority of provisional application 61/808,146, filed on Apr. 3, 2013.
Prior Publication US 2019/0357126 A1, Nov. 21, 2019
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 48/16 (2009.01); H04W 56/00 (2009.01); H04W 84/04 (2009.01)
CPC H04W 48/16 (2013.01) [H04W 56/001 (2013.01); H04W 84/045 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A wireless transmit/receive unit (WTRU), the WTRU comprising:
a processor configured to:
receive a physical downlink control channel (PDCCH) transmission, wherein the PDCCH transmission indicates which of a first set of resources or a second set of resources is to be used by the WTRU;
determine reference signals to use for radio link monitoring (RLM) based on the received PDCCH transmission, wherein a first set of reference signals is used for RLM responsive to the PDCCH transmission indicating that the first set of resources is to be used by the WTRU and a second set of reference signals is to be used for RLM responsive to the PDCCH transmission indicating that the second set of resources is to be used by the WTRU, wherein the first set of reference signals comprise at least one of a channel state information reference signal (CSI-RS) or a synchronization signal;
perform RLM measurements using the first set of reference signals if the first set of resources is used by the WTRU, or perform RLM measurements using the second set of reference signals if the second set of resources is used by the WTRU; and
responsive to a determination that a radio link quality based on the RLM measurements is below a threshold, send a message that indicates a request for a radio resource control (RRC) procedure.