What is EPS attach in LTE?
What is EPS attach in LTE?
LTE attach procedure is the procedure in which the UE registers to the network, and creates the EPS Bearer between the UE and the PGW, in order to be able to send and receive data, to and from the PDN.
What is attach procedure in LTE?
Attach procedure may trigger one or multiple Dedicated Bearer Establishment procedures to establish dedicated EPS bearer for that UE. During the LTE Initial Attach procedure, the Mobile Equipment Identity is obtained from the UE. The MME operator may check the Mobile Equipment Identity with EIR.
What is Telecom EPS?
The EPS (Evolved Packet System) network is unusual with regards to the 2G (GSM (Global System for Mobile)/GPRS (General Packet Radio Service)) and 3G (UMTS, Universal Mobile Telecommunications System) networks, it only offers a data transmission service in PS (Packet Service) mode, whose main characteristic is that it …
What is Guti in LTE?
In LTE, the GUTI is the Globally Unique Temporary ID, and identifies the mobile device to the LTE network. The GUTI is assigned to the device by the Mobility Management Entity (MME), the access network’s primary control node.
What is the difference between EPS and EPC?
EPS is composed of E-UTRAN (Evolved UTRAN) and EPC (Evolved Packet Core) which are commonly known as 3G-LTE (Long Term Evolution) and SAE (System Architecture Evolution) respectively. E-UTRAN is focused on the evolution of the Radio Access Network while EPC looks into the future needs of the core network.
What are the different types of attach for EPs?
There are three different types of attach as listed below. EPS attach : indicate the attach for EPS services only) Combined EPS/IMSI attach : indicate the attach for both EPS and non-EPS services EPS emergency attach : indicate the attach for emergency bearer services
What is an’eps bearer’in LTE?
During ‘LTE attach’ procedure, the network establishes this EPS Bearer between the UE and the PGW. The PGW assigns an IP address for this Bearer. The UE uses this IP address, in order to communicate with the PDN. In addition, the PGW assigns a QoS for this Bearer, which guarantees the QoS for the data passing in this Bearer.
What is the value of IE EPS attach?
The IE EPS Attach Typeindicates the purpose of the attach procedure. The value can be EPS attach(to attach for EPS services only) or combinedEPS/IMSI attach(to attach for both EPS and non-EPS services) or EPS emergency attach(to attach for emergency bearer services) The IE EPS Mobile Identitycan be GUTI, IMSI orIMEI.
Where does UE send its attach type information?
UE send its attach type information in at EPS attach type value IE of Attach Request. This IE has two options as follows. EPS Attach Combined EPS/IMSI Attach
