GBR / Non-GBR Bearers
In telecommunications, GBR (Guaranteed Bit Rate) bearers reserve a minimum bit rate end-to-end and are used for services such as voice and real-time video, while Non-GBR bearers are best-effort and used for general data. The bearer type is selected through the QCI in LTE or the 5QI in 5G.
Categories: Radio Access Network
GBR / Non-GBR Bearers in context
The radio access network is where mobile devices attach to the operator's infrastructure. Attacks in this layer include IMSI catching, rogue base stations and downgrade attacks; defenses rest on mutual authentication, integrity-protected signaling and Open RAN supply-chain hygiene.
To place GBR / Non-GBR Bearers in the wider telecom-security picture, review 1G, 2G, 5G, 5G SA, 5G NSA and 5GNR — each entry cross-references back to this page so you can walk the topic in either direction.
Related terms
More from the TelcoSec Glossary
Browse the full TelcoSec Glossary, the Ultimate Guide to Mobile Network Security, or the P1 Arsenal of telecom-security tools.