Revision as of 06:02, 22 January 2014

Abbreviations

LTE 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

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 | 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
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 |}
 =References=
 <references/>