Content •Comparison of 2G,3G and LTE Packed Domain •EPS EPS •LTE Requirements •Main Main Characteristics of LTE Physical Layer •The MME •LTE and SAE ID ID´ss •Latency Considerations •DL Resource Elements •Keys in LTE •Security for Voice over LTE •Future
Herbert Koblmiller, 26. November 2010
Deepsec 2010
2
Comparison of 2G, 3G, LTE – PACKET DOMAIN 2G BTS
BSC Serving GPRS Support Node
3G NodeB
Gateway GPRS Support Node Internet
RNC
LTE Serving Gateway
eNodeB
Herbert Koblmiller, 26. November 2010
Deepsec 2010
PDN Gateway
3
EPS – Evolved Packet System
E-UTRAN (LTE)
EPC (SAE) Mobility Management Entity
eNodeB X2
S1-MME
S1-U eNodeB
S6a
Home Subscriber Server Internet
S11
Serving Gateway G
S5
PDN Gateway
User plane U l Contrrol plane Herbert Koblmiller, 26. November 2010
Deepsec 2010
4
LTE Requirements Services Internet Telephony Mobility up to 250km/h Broadcast (eg MBMS) High Data Rates Up to >100 Mbit/s DL (2x2 Ant) Up to >300 Mbit/s DL (4x4 Ant) Up to >50 Mbit/s UL Higher spectral Efficiency than R6 PS Services only User plane latency
