US 12,143,871 B2
Random access skip configuration
Hyejung Jung, Northbrook, IL (US); Prateek Basu Mallick, Dreieich (DE); Joachim Loehr, Wiesbaden (DE); Ravi Kuchibhotla, Chicago, IL (US); Vijay Nangia, Woodridge, IL (US); Ebrahim MolavianJazi, Lincolnwood, IL (US); and Robert T. Love, Barrington, IL (US)
Assigned to Lenovo (Singapore) Pte. Ltd., New Tech Park, Singapore (SG)
Filed by Lenovo (Singapore) Pte. Ltd., New Tech Park (SG)
Filed on Aug. 8, 2023, as Appl. No. 18/446,394.
Application 18/446,394 is a continuation of application No. 17/199,210, filed on Mar. 11, 2021, granted, now 11,770,744.
Application 17/199,210 is a continuation of application No. 16/417,428, filed on May 20, 2019, granted, now 10,972,948, issued on Apr. 6, 2021.
Claims priority of provisional application 62/673,774, filed on May 18, 2018.
Prior Publication US 2023/0388869 A1, Nov. 30, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 36/00 (2009.01); H04L 5/00 (2006.01); H04W 74/0833 (2024.01)
CPC H04W 36/0055 (2013.01) [H04L 5/0048 (2013.01); H04W 74/0833 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A radio access network (RAN), comprising:
at least one memory; and
at least one processor coupled with the at least one memory and configured to cause the RAN to:
transmit a handover command message from a first cell, wherein:
the handover command message includes first information and second information;
the first information indicates a random access channel (RACH) configuration of a second cell, one or more RACH resources on the second cell, and a first one or more downlink reference signals associated with the second cell;
each of the first one or more downlink reference signals is associated with a RACH resource of the one or more RACH resources;
the second information indicates one or more random access skip configurations for handover to the second cell and a second one or more downlink reference signals associated with the second cell; and
each of the second one or more downlink reference signals is associated with a random access skip configuration of the one or more random access skip configurations; and
transmit a first set of downlink reference signals comprising at least one of the first one or more downlink reference signals and a second set of downlink reference signals comprising at least one of the second one or more downlink signals;
wherein, in response to transmitting the handover command message, a first downlink reference signal is selected from the first set of downlink reference signals and the second set of downlink reference signals, and a determination is made about whether to perform a random access procedure based on the first downlink reference signal.