LTE, a crash course

LTE, A CRASH COURSE

Long Term Evolution Backward compatibility Simplified architecture Higher throughput and lower latency

2

LTE, A CRASH COURSE

First out TeliaSonera In Oslo and Stockholm 14 December 2009

3

LTE, A CRASH COURSE

Pre LTE Hirarchical networks Physicaly separated Secure locations of devices Separate voice channel through curcit switching

4

LTE, A CRASH COURSE

Architecture

5

LTE, A CRASH COURSE

Level of Deployment

6

LTE, A CRASH COURSE

Features High throughput Reduces latency Improved mobility Power conserving Flexible cell size Interoperability MBSFN

7

LTE, A CRASH COURSE

Voice No native support Alternatives

– VoLTE – Voice over LTE

– CSFB – Circuit Switched Fallback

– SVLTE – Simultaneous Voice and LTE

– (Skype, Google Talk, WebRTC)

8

LTE, A CRASH COURSE

Abbreviations E-UTRAN – Evolved UTRAN UE – User Equipment eNodeB – evolved NodeB SAE – System Architecture Evolution SWG – Serving Gateway MME – Mobile Management Entity HSS – Home Subscriber Server NAS – Non Access Stratum PGW – PDN Gateway

9

LTE, A CRASH COURSE

Why is increased security needed? Antennas at public locations Transport over common networks Transport over know protocol stack

10

LTE, A CRASH COURSE

How is increased security accomplished? Certificate and public key authentication of trusted

network equipment IPSec from eNodeB Key hierarchy

11

LTE, A CRASH COURSE

Nexus and LTE Protocol Gateway

– Automatic Enrollment

– Automatic Renewal

– Support for both SCEP (draft23) and CMP (RFC4210) Verified supported eNodeBs

– Ericsson RBS6000 release L12A (SCEP)

– NSN eNB release REL30 (CMP)

– Huawei eNB release eRAN 3.0 (CMP)

– Juniper SRX (SCEP)

12