System Architectures for 5'9GHz DSRC Wireless Communications

1
System Architectures for 5.9GHz DSRC Wireless
Communications

• Christopher J Skinner
• BSc(Eng) MEngSc MIET MIEAust MACS CPEng
• Principal DISplay Pty Ltd

2
(No Transcript)
3
(No Transcript)
4
The requirement for high availability, low
latency DSRC wireless communications

• High availability, low-latency HALL
• High availability because it must support
  services that are safety-critical
• Low latency because the combined closing velocity
  of surface transport vehicles may exceed 300kph
  (more in some countries)

5
The logical architecture of V2V
6
In-vehicle logical architecture
7
IEEE P802.11p/D0.25, November 2005 Figure
p4Connecting an OBU to an Onboard Vehicle Host
8
CVIS Vehicle System
9
(No Transcript)
10
(No Transcript)
11
The logical architecture of V2I
12
IEEE P802.11p/D0.25, November 2005Figure
p1RSU, OBU, and a Portable Unit Communicating
13
The logical architecture for control centres,
roadside units RSU and vehicles
14
Distribution System (DS) Portal at RSUIEEE
P1609.3/D21, November 2006 Figure 5
15
The choice of 5.9GHz band
16
5.9 GHz SPECTRUM
Australian fixed links
Vic Police
Vic Police
17
IEEE P802.11p/D0.25, November 2005Figure
p7OFDM PHY WAVE frequency channel plan for North
America
18
Introduction to CALM - what is it and how does it
engage with DSRC
19

20
(No Transcript)
21
CALM High-level Architecture including references
to standards
22
(No Transcript)
23

24
EU COMeSafety Relationships
25
Car2Car ? WAVE
26
Reference IEEE P1609.3D20, page 9, Figure 1,
WAVE Standards, July 2006quoted in IEEE DSRC
Application Services (P1609) Status Report by Tom
Kurihara dated 2007-04-22
27
IEEE P1609.3/D21, November 2006The WAVE protocol
stack
28
CALM FAST exchange of data VSCF Vehicle
Service Context Frame RSIF Roadside Service
Information Frame
29
Figure 4Reference architecture of the MAC with
channel coordinationIEEE P1609.4/D09, August 2006
30
Figure 7Sync interval, guard interval, CCH
interval and SCH intervalIEEE P1609.4/D09,
August 2006
31
Japanese approach
32
Issues for standards
33
Issues for spectrum allocation
34
Issues for this workshop

• Need to agree that 5.9GHz is the first priority
  for DSRC in Australia
• Need to agree to work together to present a
  compelling case for allocation of spectrum
• Need to agree on the objectives for a cluster

35
(No Transcript)