LTE
From Teknologisk videncenter
Abbreviations
| Abb. | meaning | Notes |
|---|---|---|
| LTE | Long Term Evolution | The evolution of UMTS - Often refered to as 4G Mobile network |
| SAE | System Architecture Evolution | The "non-radio" part of the network |
| EPS | Evolved Packet System | EPS is the network consisting of LTE and SAE[1] |
| UE | User Equipment | Typically mobile units |
| PDN | Packet Data network | IP based network |
| UMTS | Universal Mobile Telecommunications Network | Often refered to as 3G Mobile network |
| UTRAN | Universal Terrestrial Radio Access Network | The radio technology used between mobile terminals and the access network |
| EUTRAN | Evolved UTRAN | |
| EPC | Evolved Packet Core | |
| CN | Core Network | |
| QoS | Quality of Service | |
| P-GW | PDN Gateway | Responsible for IP address allocation for the UE and enforment of QoS |
| S-GW | Serving Gateway | All UE IP packets pass through the S-GW. Serves as UE anchor as UE moves between e-NodeBs |
| eNodeB | Evolved Node B | The hardware that communicates directly to the UE |
| PCRF | Policy Control and Charging Rules | Provides the QoS classification and bit rate |
| HSS | Home Subscriber Server | Contains users SAE subscription, such as QoS profile |
| MME | Mobility Management Entity | Control node processing the signaling between the UE and CN |
| NAS | Non Access Stratum | The protocols running between the UE and CN |
| S-TMSI | SAE Temporary Mobile Subscriber Identity | Identifies the UE to the MME |
| TA | Tracking Area | A logical concept of an area where a user can move around without updating the MME |
| AS | Access Stratum | Acts as data link layer between UE and S-GW |
| NAS | Non Access Stratum Protocol | Support mobility between UE and P-GW |
| X2 | Interface between eNodeBs | Handover coordination |
| S1-MME | Control Interface between eNodeBs and MME[2] | |
| S1-U | User plane Interface | between eNodeBs and S-GW. User data to Gateway |
| RRM | Radio Resource Management | All functions related to radio bearer control to UE's |
| RAN | Radio Access Network | Protocols layers between EnodeBs and UEs (All controlled by EnodeBs) |
| PLMN | Public Land Mobile Network | A network run by an operator in on country |
| RAT | Radio Access Technology | Such as 2G, 3G GRPS/UMTS, LTE |
| PMIP | Proxy Mobile IP | Home P-GW acts as IP proxy for UE on other RAT's |