Monday, November 30, 2020

Radio Link Failure vs Beam Failure

This article is focused on Radio Link Failure and Beam Failure in 5G.

General Information
  • BF -  Beam Failure
  • BFD - Beam Failure Detection
  • BFI - Beam Failure Instances
  • BFR - Beam Failure Recovery
  • RLM - Radio Link Monitoring
  • RLF - Radio Link Failure
  • CFRA - Contention Free Random Access Procedure
  • CBRA - Contention Based Random Access Procedure 

General Information
  • Radio Link Failure is commonly known as RLF and an RRC Layer Procedure.
  • Beam Failure is an MAC layer Procedure
  • However both are dependent on physical layer for the indication to be received
  • BFD and Radio Link Monitoring (RLM) have some similarities but are separate UE procedures
  • Explicit configuration and implicit configuration both are possible for BFR





 

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