28C3 - Version 2.3.5

28th Chaos Communication Congress
Behind Enemy Lines

Harald Welte
Day Day 3 - 2011-12-29
Room Saal 1
Start time 17:15
Duration 01:00
ID 4663
Event type Lecture
Track Hacking
Language used for presentation English

Cellular protocol stacks for Internet

GPRS, EDGE, UMTS, HSPA demystified

Almost everyone uses the packet oriented transmission modes of cellular networks. However, unlike TCP/IP, Ethernet and Wifi, not many members of the hacker commnunity are familiar with the actual protocol stack for those services.

This talk is aimed to give an in-depth explanation how the lower layer protocols on the air and wired interfaces for packet data services in cellular networks are structured.

For 2.5/2.75G, this includes RLC/MAC, NS, BSSGP, LLC, SNDCP, GTP For 3G/3.5G, this includes RRC, RLC, PDCP, NBAP, RANAP

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