Telecommunications

Question 1

What is the sim card?

Answer 1

The sim card may be the node for the 4G LTE & 5G compatible UE.

Question 2

What does the EPS contain?

Answer 2

EPC and Eutran

Question 3

What does the EPC contain?

Answer 3

HSS, PGW, PCRF, Eutran contins eNode b and uE.

Question 4

What is the X2 protocol used to connect to?

Answer 4

UE to eNode B

Question 5

Why is X2 protocol used?

Answer 5

It causes less delays and problems.

Question 6

What does eNode b connect to and how?

Answer 6

EPC using S1 protocol.

Question 7

What node does the RAN have?

Answer 7

The RAN has one node which is eNode b.

Question 8

What does RAN stand for?

Answer 8

Radio Access Network

Question 9

The 4G LTE
/ 5G RAN, known as the E-UTRAN, creates a wireless connection between UE and the mobile networks.

Question 10

The RAN uses radio (RF) waves to wirelessly connect cellular devices to the cell tower

Question 11

EPC Network
S8 and s11 are protocols

Question 12

IMS Network
SGW connects to PGW through the s5 protocol making sure that the PGW gets the correct information
and saves the state of the user information. And also does paging

Question 13

Entire system is EPS. MME, PCRF, PGW has to connect to enode be using S1
protocol.

Question 14

MME verifies, authorizes and secures and handles hand over between networks and stores GUTI

Question 15

MME uses the S11 protocol to connect with the SGW

Question 16

X2 helps single point failure. EPS stands for Evolved Packet System.

Question 17

EPS uses IP Protocol and TCP to provide information. EPS provides data
such as media and voice

Question 18

EPS has EPC, IMS, and E-UTRAN

Question 19

EPC has MME, HSS, PCRF, S-GW, P-GW

Question 20

E-UTran has enode be and UE

Question 21

MME uses a protocol called NAS

Question 22

Protocol is a set of rules for how nodes communicate with each other

Question 23

HSS is the data base

Question 24

PGW routes data to the terminal

Question 25

You can think of a node as a checkpoint for data and information transfer.

Question 26

Nas stands for nano access system, Nas protocol are used between user
and MME

Question 27

Through the RAN the UE interacts with the User Plane (data use) and the Control Plane
(signaling messages) simultaneously in the RAN, the 4G LTE RAN is known as the E-UTRAN, and EPS
network. EPS is composed of E-UTRAN, EPC, and SAE. The E-UTRAN is made up of one node which is the
eNode B.

Question 28

Search up EPC network questions and IMS network questions on google to prepare for job
interviews as you don’t need to know about the RAN. I can ignore the relationship between UE and Ran
and focus on the relationship between RAN and EPC, and EPC to IMS. Particularly the EPC (Evolved
Packet Core) network which is the base network is what I am paid to know and understand. What is a
node? Nodes can send and receive data / information within a network. In the EPS there are four key
nodes we care about which is the MME, S-GW, P-GW, HSS

Question 29

The second level architecture which I am to know is the IMS (IP Multimedia Services) network.
So basically only need to know of two architectures.

Question 30

Most of the time your use is to help your fellow employees understand tools that you
understand from experience, but those tools overall are for analysis of the architecture and to be able to
troubleshoot the architecture. The body of this essay should be one giant allusion to the network
architecture and around would be how all the tools that we use fall into play. While reading the
LTEP3_EPC_call_flows_V5.2.docx document I am not too sure as to what VoIP over IMS means off the
jump or what LTE Phase 3 means. UE, user equipment, which in the SVT Team is the android and ims
devices that are used for testing, connects to eNode B in the RAN Network. The radio access network
would be the call box in the TA room produced by Cambria and eNode B would be the satellite that the
Cambria machine connects to.