rnv vehicular communications part ii

Prof. Roberto Verdone

www.robertoverdone.org

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

Network

Other Networks

Service Area

RAN Architecture: 2G

Other MSCs

HLR, VLR,

AuIC, OMC, …

Network Architecture: 2G

RAN Core

Network

GSN BTS

Network

Network Architecture: 2.5G

MS BTS

BTS MS

UE NodeB

NodeB UE

Other RNCs

Network

UE eNodeB

eNodeB UE

Network Architecture: LTE (4G)

eUTRAN Evolved

Network

UE eNodeB

eNodeB UE

Evolved

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

MS BTS

BTS MS

Channel Assignment

Power Control

Handover

Admission Control

Load Control

Power Control

Network

MS BTS

BTS MS

Power Control

Handover

Admission Control

Load Control

Scheduling

Power Control

Network Architecture: 2.5G

Network

MS BTS

BTS MS

UE NodeB

NodeB UE

Power Control

Handover

Admission Control

Load Control

Power Control

Load Control

Scheduling

Power Control

Network

UE eNodeB

eNodeB UE

Network Architecture: LTE (4G)

Power Control

Handover

Admission Control

Load Control

Scheduling

Evolved

Network

Evolved

Network UE eNodeB

eNodeB UE

UE eNodeB

eNodeB UE

Power Control

Handover

Admission Control

Load Control

Scheduling

CN Architecture: 2.5G

(Control Plane)

(User Plane)

CN Architecture: LTE

2. Mobility Management

Network

Mobility Management (Macro Level): HLR, VLR

eNodeB

UE eNodeB

eNodeB

Area 1

Area 2

Mobility Management (Micro Level): Location Areas

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

3G (UMTS)

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

4G (LTE-A)

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

8. Application to Vehicular Comms.: 5G

Application to Vehicular Comms.: 5G

rnv vehicular communications part ii

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