???????Mastering 5G NR RRC: Unlocking the Secrets of 3GPP TS 38.331 ???????
Nitin Gupta
Linkedin Top Voice | 5G 6G | Telecom | AI/ML | Linkedin Personal Branding | Product marketing I Thought Leadership & Consulting
1?? RRC States ??
RRC_IDLE ??
?? UE (User Equipment) is in a low-power, idle state.
??? No dedicated RRC connection.
RRC_INACTIVE ??
?? Connection exists but is "paused."
?? Sleep mode for better power efficiency.
RRC_CONNECTED ??
?? UE has an active RRC connection.
?? Quick transition to data transmission.
2?? RRC Messages ??
RRCSetup ??
?? Initiation of RRC connection.
??? Configurations for lower layers.
RRCReconfiguration ??
??? Changes to existing RRC configurations.
?? Can include new radio bearer setup.
RRCRelease ???
?? Termination of an RRC connection.
?? UE goes back to RRC_IDLE or RRC_INACTIVE.
3?? Mobility Management ??
Handover ??
?? Transition from one cell to another.
?? Maintains connection quality.
Cell Reselection ??
?? In RRC_IDLE or RRC_INACTIVE.
?? UE autonomously switches to a better cell.
4?? Radio Bearers ??
SRB (Signalling Radio Bearer) ??
??? Carries RRC and NAS (Non-Access Stratum) messages.
??? High priority.
DRB (Data Radio Bearer) ??
?? Carries user data.
??? Configured based on QoS (Quality of Service).
5?? Security ???
AS (Access Stratum) Security ??
?? Encryption for radio communication.
?? Integrity protection for signaling.
NAS Security ??
?? Higher-layer encryption.
?? Carried via SRBs.
#5GMasterGuide ??
#Unlocking3GPP ??
#RRCExplained ??
#NRProtocols ??
#5GSecurityShield ???
#RadioResourceControl ???
#NextGenMobility ??
#5GHandover ??
#BearerBasics ??
#5GPowerControl ?