Communications Research Centre
(CRC)
Defence R&D Canada - Ottawa
Results (TPS)
For critical applications (like voice)
18
Streaming
4
Routing and Management traffic
12
Excellent Effort
3
Operational applications
8
Standard
2
Low priority applications
6
Back-ground
1
Recreational traffic
6
Best Effort
0
Notes
Weight
Class Name
Prio-rity
20.1
21.2
19.5
Improved
by %
37.2 +/- 2.5
15.0 +/- 1.4
4.6 +/- 0.5
High Load delay(s)
33.2
22.2 +/- 2.1
Detailed Mode
36.4
10.4 +/- 1.3
Enhanced Mode
33.3
2.3 +/- 0.3
Base Mode
Improved
by %
Nom Load delay (s)
Small Network TMS (with TPS)
23.9
21.2
20.9
Improved
by %
45.2+/- 3.2
20.3 +/- 2.3
5.7 +/- 0.7
High Load delay(s)
36.1
26.8 +/- 2.0
Detailed Mode
28.0
12.3 +/- 1.1
Enhanced Mode
30.8
3.4 +/- 0.3
Base Mode
Improved
by %
Nom Load delay (s)
Large Network TMS (with TPS)
•Use of the DiffServ weights shown gave a significant improvement in the TMS delay.
•Improvement of
approximately 20% at saturation and
approximately 33% at high load were seen.
approximately 33% at high load were seen.
•This confirms that DiffServ-style QoS can make a
significant improvement to
prioritized flows in the Maritime environment.
•Further studies in OPNET could be completed to determine
the impact of alternative
WFQ weightings.