RNV Vehicular Communications Part II

Prof. Roberto Verdone

www.robertoverdone.org

RNV

Vehicular Communications – Part II Radio Networks for Vehicular Communications

Roberto Verdone www.robertoverdone.org



Outline

1. Network Architectures: Evolution From GSM towards 5G

2. Mobility Management

3. 2G (GSM): Numerology

4. 2.5G (GPRS)

5. 3G (UMTS): Numerology

6. LTE: Numerology

7. Application to Vehicular Communications

The scope of this lecture block is to introduce the fundamentals of

network architectures for mobile radio networks.



1. Network Architectures



Base Station Mobile Station BS Controller Radio Link PP Link

Core

Network

Other Networks

Cells

Service Area

RAN Architecture: 2G



MS

MS

PSTN

Other MSCs

HLR, VLR,

AuIC, OMC, …

Network Architecture: 2G

BTS

BTS

BSC

MSC

RAN Core

Network



MSC

GSN BTS

BTS

BSC

MS

PSTN

IP

Core

Network

Network Architecture: 2.5G

MS

GERAN



BSC

MS BTS

BTS MS

RNC

UE NodeB

NodeB UE

Other RNCs


PSTN

IP

Core

Network

UTRAN



UE eNodeB

eNodeB UE

Network Architecture: LTE (4G)

PSTN

IP

eUTRAN Evolved

Core

Network




UE eNodeB

eNodeB UE

RRHs

BBU

PSTN

IP

Evolved

Core

Network UE eNodeB

eNodeB UE

eUTRAN



Admission Control The process of determining whether

a service request can be admitted to the system

Directed Retry The process of re-directing a new user

toward a base station

different from the one providing best link budget

Channel Allocation The process of choosing the channel

(and the number of RUs) to be allocated to the user

Power Control The process of setting the transmission power level

Hard Handover The process of changing serving base and/or channel

Soft Handover The process of modifying the set of serving bases

Load Control The process of controlling the load of the network

Radio Resource Management



BSC

MS BTS

BTS MS

Channel Assignment

Power Control

Handover

Admission Control

Load Control

Power Control


PSTN

IP

Core

Network



BSC

MS BTS

BTS MS

Power Control

Handover

Admission Control

Load Control

Scheduling

Power Control

Network Architecture: 2.5G

PSTN

IP

Core

Network



BSC

MS BTS

BTS MS

RNC

UE NodeB

NodeB UE

Power Control

Handover

Admission Control

Load Control

Power Control

Load Control

Scheduling

Power Control

Power Control


PSTN

IP

Core

Network



UE eNodeB

eNodeB UE

Network Architecture: LTE (4G)

Power Control

Power Control

Handover

Admission Control

Load Control

Load Control

Scheduling

PSTN

IP

Evolved

Core

Network



PSTN

IP

Evolved

Core

Network UE eNodeB

eNodeB UE


UE eNodeB

eNodeB UE

RRHs

BBU

Power Control

Power Control

Handover

Admission Control

Load Control

Scheduling



CN Architecture: 2.5G

(Control Plane)

(User Plane)



CN Architecture: LTE



2. Mobility Management



MSC

GSN

PSTN

IP

Core

Network

Mobility Management (Macro Level): HLR, VLR

HLR

VLR

eNodeB

eNodeB

UE

UE eNodeB

eNodeB

Area 1

Area 2



Mobility Management (Micro Level): Location Areas

LA1

LA2

UE



3. 2G



2G (GSM)



2G (GSM)

F-TDMA: Bc = 200 KHz; Rb = 271 Kbit/s



4. 2.5G



2.5G (GPRS)

F-TDMA: Bc = 200 KHz; Rb = 271 Kbit/s



2.5G (EDGE)

F-TDMA: Bc = 200 KHz; Rb = 3x271 Kbit/s



5. 3G



3G (UMTS)

F-T-CDMA: Bc = 5 MHz; Rb = up to about 2 Mbit/s



6. 4G



4G (LTE-A)

OF-TDMA: Bc = 5 x N MHz; Rb = up to about 225 Mbit/s



7. 5G



5G



5G



5G



5G



8. Application to Vehicular Comms.: 5G



Application to Vehicular Comms.: 5G










Documents

RNV Vehicular Communications Part II