1. AeroMACS QOS

2. Contents QOS concepts Applications & QOS mapping Device Classes
AeroMACS QOS
IP – QOS
Diffserv Concepts
Applications & QOS mapping
Device Classes
Device Identification & Provisioning

3. AeroMACS service flows
Type of Service
Features
Applications
Unsolicited Grant Service (UGS)
Periodic B/W of equal size allocated as per the request made during connection establishment.
No dynamic negotiations possible
Less B/W management overheads
Suitable for real-time traffic of fixed data length at periodic intervals
Examples: Voice, T1/E1 service, VOIP etc., Critical sensor traffic
Real-time Polling Service (rtPS)
Periodic B/W negotiation opportunities are provided and B/W size is negotiated at every opportunity
SS provided with uni-cast request opportunities.
SS can request for variable data size when the opportunity is available.
Suitable for real-time with variable data sizes or critical applications that requires guaranteed service
Examples: MPEG Video Streams, Periodic Broadcasts like ADS-B/TIS-B , Air Traffic Control messages,
Non Real-Time Polling Service nrtPS
Suitable for non real-time traffic
BS typically polls SS in regular basis with intervals of 1 sec or lesser ( Minimum Guaranteed) .
SS can use contention based request for bandwidth allocation
Suitable for non-real-time lesser critical applications.
Example : File transfer , AOC applications
Best Effort
Suitable for general low priority traffic which does not require any guaranteed service level
Example : Web Browsing , Mail transfer

4. IP- Quality Of Service
Re assigned for Diffserv
However TOS is not generally implemented. Instead reassigned to Diffserv (RFC 2474) . IPv4 & IPv6 use Diffserv definitions.

5. Diffserv concepts
Diffserv is used to classify and mark the packets so that packets are treated with different QOS . TOS bits of IP header is redefined for Diffserv
Expedited Forwarding (EF)
Low delay, Low Jitter & Low Loss
Assured Forwarding (AF)
BW assured for this traffic
Packet drop precedence can be defined within this class.
Default (BE)
Generic traffic with best effort transmission
AF packet drop precedence definition
Assured Forwarding (AF) Behavior Group
Class 1
Class 2
Class 3
Class 4
Low Drop
AF11 (DSCP 10)
AF21 (DSCP 18)
AF31 (DSCP 26)
AF41 (DSCP 34)
Med Drop
AF12 (DSCP 12)
AF22 (DSCP 20)
AF32 (DSCP 28)
AF42 (DSCP 36)
High Drop
AF13 (DSCP 14)
AF23 (DSCP 22)
AF33 (DSCP 30)
AF43 (DSCP 38)

6. Applications and QOS Mappings
Type
PHB
DSCP
Aero MACS SV
Priority
Network Control
NET
AF31
011010
rtPS 1
VOIP ATC
PTT
AF32
011100 2
CPDLC, ADS-C, ADS-B, CM
ATS-High
AF33
011110 3
VOIP AOC
AF21
010010 4
VOIP Ground
AF22
010100 5
Video Applications
VIDEO
FIS, METAR, NOTAM
ATS-LOW
AF23
010110
nrtPS 6
Airline Operation Control
AOC-High
AF11
001010 7
SW Upload, Dataload, FTP etc.,
AOC-Low
AF13
001110 8
Default
DEFAULT DF
000000 BE 9
Approach similar to ATN-IPS manual (DOC 9896)

7. Device Classes Aircraft Surface Vehicles Applications Type PHB DSCP
Aero SV
Priority
Network Control
NET
AF31
011010
rtPS 1
VOIP ATC
PTT
AF32
011100 2
CPDLC, ADS-C, ADS-B, CM
ATS-High
AF33
011110 3
VOIP AOC
AF21
010010 4
FIS, METAR, NOTAM
ATS-LOW
AF23
010110
nrtPS 6
Airline Operation Control
AOC-High
AF11
001010 7
SW Upload, Dataload, FTP etc.,
AOC-Low
AF13
001110 8
Default
DEFAULT DF
000000 BE 9
Surface Vehicles
Applications
Type
PHB
Aero SV
Priority
Network Control
NET
AF31
011010
rtPS 1
SMGCS - Surveillance
ATS-High
AF33
011110 3
VOIP Ground
PTT
AF22
010100 5
Default
DEFAULT DF
000000 BE 9

8. Device Classes Video Sensors Ground Critical Ground Default
Applications
Type
PHB
Aero SV
Priority
Network Control
NET
AF31
011010
rtPS 1
Video Applications
VIDEO
AF22
010100 5
Default
DEFAULT DF
000000 BE 9
Ground Critical
Applications
Type
PHB
Aero SV
Priority
Network Control
NET
AF31
011010
rtPS 1
Critical ATS Sensor Data
ATS-High
AF33
011110 3
Default
DEFAULT DF
000000 BE 9
Ground Default
Applications
Type
PHB
Aero SV
Priority
Network Control
NET
AF31
011010
rtPS 1
Default
DEFAULT DF
000000 BE 9

9. Device Type Identification
“tbsCertificate.subject” shall be used to distinguish different types of certificates
During Logon AAA server identifies the device type and based on user profile provisions the set of service flows
Certificates have device Type Identified
AAA
tbsCertificate.subject : <Device Type><Id>
ASN
AeroMACS CPE
ASN / BS configured to support all service flows identified

10. Thank You