28C3 - Version 2.3.5

28th Chaos Communication Congress
Behind Enemy Lines

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