Its been discussed in the past
Both AES and SNOW 3G are encryption algorithms.
128-bit key, 128-bit IV
Generate Keystream: 10Kgates, 1.72 Gbps [SAGE06]
128-bit block, 128,192 and 256-bit keys
Enc/Dec: 5.4Kgates, 311Mbps ~ 21Kgates, 2.6Gbps @ 0.13µm CMOS [SM03]
Search snow 3g algorithm spec you will get the first link as gsma standard and so for the AES its rfc3602.
Read more at: http://tech.queryhome.com/30849/lte-difference-between-snow-3g-and-aes-algorithms