Energy Saving Techniques for UE in 5G: RRC States, DRX, and CDRX

Описание: In 5G, UE sleeps when there is no data traffic, and wakes up when data arrives in downlink or uplink buffer. This video explains the basics of sleep and wake-up mechanisms using RRC states, DRX, and CDRX.

Check out my blog for an introduction to this video:
https://www.wirelessexplained.com/drx...

▬ Contents of this video ▬▬▬▬▬▬▬▬▬▬

0:00 - Introduction
0:18 - RRC States
1:31 - Discontinuous Reception (DRX)
1:35 - Initiating downlink data transmission
3:12 - Initiating uplink data transmission
3:57 - Connected Mode Discontinuous Reception (CDRX)
4:45 - DRX Short Cycle and Long Cycle
5:44 - Event based wake up period extension

References:
1. ETSI TS 138 331, Section 6.3.2
2. ETSI TS 138 304
3. Book: Chris Johnson, "5G New Radio in Bullets", 2019.
4. 5G NR: Connected Mode DRX (http://howltestuffworks.blogspot.com/...)
5. Sharetechnote: 4G/LTE - DRX (https://www.sharetechnote.com/html/Ha...)

Music: Erik SATIE - Gymnopedies 1

#5G, #Wireless, #WirelessCommunication, #CellularCommunication, #DRX, #CDRX, #rrcgroupd

"Correction: 03:31 UE cannot send SR while in RRC idle/inactive state. To change to 'RRC Connected' state, UE has to do a contention-based RACH procedure."