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Rx- Interface between
AF and the PCRF
Functionality
Rx reference point.
Sbc- Interface between
CBC and MME
Functionality
Warning message delivery and control functions.

S9 - Interface between
Home PCRF and the Visited PCRF

Functionality
QoS policy transfer and charging control information. It supports local breakout function.

S11 - Interface between
MME and Serving GW

Functionality
Reference point.

S13- Interface between
MME and EIR.

Functionality
Enables UE identity check procedure.

Sgi - Interface between
PDN GW and the packet data network.

Functionality
Packet data network interface for 3GPP accesses.
1. Operator external public
2. Private packet data network
3. Intra operator packet data network, e.g. provision of IMS services.

UMTS LTE Interfaces - Part 3

Evolved Packet Core (EPC) system architecture for all IP.Mobility Management Entity (MME),
Serving System (S) Architecture (A) Evolution (E) Gateway or Serving Gateway SGW.
Packet Data Network (PDN) SAE Gateway
Enhanced Packet Data Gateway (ePDG)
Multiple antenna techniques -
MIMO, Adaptive antenna systems - AAS
Antenna diversity - AD

LTE topics @ FCD

What is LTE? Key driving factors behind 4G technology.
LTE Data rates and comparison with 3G rates.
Difference between air, radio and core network..  
Seamless mobility in 4G.

Part1 Part2 Part3

UMTS LTE Interfaces Part1 Part2 Part3

Verilog RTL code examples for front-end chip design.
Digital Design Topics
Half-adder, full-adder,
Adder-sub tractor
Stack Organization - LIFO, RPN
Parity Generation and error checking
Binary multiplier circuit.
CMOS introduction
Digital fundamentals -
RTL coding guidelines. ICG cell, Assertions, $assertkill, levels. Chandle
Pipeline vs. Parallel processing.

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