US 12,232,038 B2
Method and system for performing radio resource management (RRM) measurements by a WTRU in a 3GPP networks
Vinay Kumar Shrivastava, India (IN); Avijit Manna, India (KR); Kalyan Dhulipudi, India (KR); Ankit Dhabriya, India (IN); and Ankit Srivastav, India (IN)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Appl. No. 17/597,388
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
PCT Filed Aug. 3, 2020, PCT No. PCT/KR2020/010222
§ 371(c)(1), (2) Date Jan. 4, 2022,
PCT Pub. No. WO2021/020952, PCT Pub. Date Feb. 4, 2021.
Claims priority of application No. 2019 41031213 (IN), filed on Aug. 1, 2019.
Prior Publication US 2022/0279445 A1, Sep. 1, 2022
Int. Cl. H04W 52/02 (2009.01); H04W 36/32 (2009.01); H04W 36/30 (2009.01)
CPC H04W 52/0232 (2013.01) [H04W 52/0235 (2013.01); H04W 52/0245 (2013.01); H04W 52/0254 (2013.01); H04W 52/0274 (2013.01); H04W 36/304 (2023.05); H04W 36/324 (2023.05)] 10 Claims
OG exemplary drawing
 
1. A method for performing radio resource management (RRM) measurements by a wireless transmit and receive unit (WTRU) in a 3rd generation partnership project (3GPP) networks to eliminate misalignment between measurement resources and a discontinuous reception (DRX) on duration, said method comprising:
providing, by a next-generation node B (gNB), a wakeup signal (WUS) prior to a DRX on duration by a time-offset based on at-least one of;
a secondary synchronization signal (SSS) signal resource for providing the WUS at least based on one orthogonal frequency division multiplexing (OFDM) symbol;
a synchronization signal block (SSB) signal resource at least based on four OFDM symbols; and
one or more of channel state information reference signal (CSIRS), physical broadcast channel (PBCH) demodulation reference signal (DMRS), tracking reference signal (TRS), positioning reference signal (PRS) based signal resource,
configuring, by the gNB, a set of measurement resources concentrated in time-domain during said time offset, said measurement resources comprising one of the CSIRS, SSS, SSB, PBCH DMRS, TRS, and PRS signal resources when WUS comprises physical downlink control channel (PDCCH) downlink control information based (DCI); and
performing, by the WTRU, during said time offset, at least one of: automatic gain control (AGC), automatic frequency control (AFC), sector transmit receive (STR), and power transmit receive (PTR) tuning based on measurements of reference signals (RS), mobility based measurements and channel-tracking based on time-domain concentrated measurement resources,
wherein the WTRU is configured for:
determining the misalignment of single message transfer control (SMTC) and DRX active time and calculate an average misalignment value over a number of DRX cycles;
comparing said average misalignment value against a defined threshold value of misalignment;
calculating a preferred set of values for DRX parameters based on said value of misalignment if said value exceeds a threshold, said DRX parameters including at-least one of: DRX on duration, DRX inactivity timer, DRX offset, DRX cycle length;
reporting said set of preferred DRX parameters to gNB for causing the gNB to modify the DRX parameters for the UE and/or change measurement configurations; and
applying said new set of DRX parameters upon receipt from gNB to thereby address SMTC and DRX misalignment.