Transcript Targets for the SG 13 Caracas Meeting Working Party 4/13 Network

Targets
for the SG 13 Caracas Meeting
Working Party 4/13
Network Performance and Resource Management
Topic Overview
• WP 4/13 Structure and Responsibilities
• Planned Meeting Schedule
• Key Technical Issues
• Expected Results
Working Party 4/13 Structure and Responsibilities
Question
Subject
Rapporteur
Recommendations
4
Broadband and IP
Related Resource
Management
S. Yoneda
I.371, Y.iptc
6
Performance of IP-Based
Networks and the
Emerging GII
H. Kim
I.350, I.351/Y.801/Y.1501, I.353,
I.355, Y.800, Y.1540, Y.1541
7
B-ISDN/ATM Cell
Transfer and Availability
Performance
D. Mustill
I.356, I.357, I.381, (ex.I.35AAL),
I.35AAL2, I.35av
8
Transmission Error and
Availability Performance
G. Garner
G.821, G.821.1, G.826, G.827,
G.827.1, G.828, G.829, G.921,
G.optperf
9
Call Processing
Performance
T. Shinomiya
I.352, I.354, I.358, I.359, Y.1530
Planned WP 4/13 Caracas Meeting Schedule
Meeting
Q.4
T 15 May W 16 May Th 17 May F 18 May M 21 May T 22 May W 23 May
*
Q.6
Q.7
Q.8
Q.9
Plenary
* Proposed joint session with Q.2
Question 4/13
Broadband and IP Related Resource Management
• Issue -- AAL2 Resource Mgmt (D111, D112, D144)
– “Burstiness” of AAL2 connections strongly impacts link
utilisation for a given delay quantile. For a fixed delay
quantile, utilisation decreases with increasing burst size.
– “Shaping” can be used to control bursts, increase utilization
– Connection admission control must be based on AAL2 link
characteristics (ALC) that describe traffic burstiness
• Expected Results -- New I.371 Text on AAL2 RM
(Developed jointly with Q2/13)
Q4/13 will also progress work on Draft Rec. Y.iptc (Traffic
Control and Resource Management in IP-Based Networks)
Question 6/13
Performance of IP-Based Networks and the
Emerging Global Information Infrastructure
• Issue -- IP Packet Transfer QOS Parameters, Objectives
–
–
–
–
–
New parameter (e.g., SESIP) to specify packet loss clustering
Metric(s) and objectives for IP packet delay variation (jitter)
Delay specifications for long complex paths
IP network Hypothetical Reference Paths, allocation rules
Possible new Recommendation on QOS at the TCP layer
• Expected Result -- Stable Y.1541, Revision for Y.1540
IP/MM Workshop recommended Joint Meeting
(SGs 13, 16, 12, 11) to harmonize QOS Classes
Table 1/Y.1541 –
Provisional IP QOS Class Definitions and
Network Performance Objectives
QoS Classes
Nature of the network
performance objective
IPTD
IPDV
IPLR
Upper bound on the
Mean IPTD
(Note 6)
Upper bound on the
1-10-4 quantile of IPTD
minus the minimum
IPTD
(Note 1)
Upper bound on the
Packet loss probability
IPER
Upper bound
SPR
Upper bound
Default
objectives
Class 0
Class 1
(Interactive)
Class 2
(NonInteractive)
1 sec
(Note 3)
Class 3
(U class)
No default 150 ms
400 ms
No default
50 ms
(Note
4)
50 ms
(Note 4)
1 sec
(Note 3)
U
No default
1*10-3
(Note
2)
default
1*10-3
(Note 2)
(Note 5)
default
1*10-3
U
default
U
default
default
default
U
1*10-4
(Note 7)
default
TBD
U
Question 7/13
B-ISDN/ATM Cell Transfer
and Availability Performance
• Issue -- Rec. I.356 performance allocation models
– ATM/ADSL access links, ATM/IP Interworking (D138)
– Use of inter-operator (rather than country-based) network
models (TD11)
• Expected Results: Proposed new performance
models and allocation methods
Question 8/13
Transmission Error and Availability Performance
• Issue -- “G.optperf” allocation model (D101)
• Proposal: Change "international paths" to "multioperator paths crossing international borders"
• Questions:
 Should fixed G.828 “terminating country” block allowance (17.5%)
be allocated to “terminating domain”? Should the “routing factor”
for the terminating domain be copied from G.828?
 How many intermediate domains should be assumed? (Proposal: 4)
 How allocate to intermediate domains? (Proposal: use block
allowance and routing factor, satellite allocation from G.828)
 Likely Results: New HRP and allocation proposals
Question 9/13
Call Processing Performance
• Issue -- Draft Y.1530 QOS Classes
• Proposals
– Specify multiple call processing QOS classes for Hybrid IP
networks to meet varying service requirements (D126)
– Implement International Emergency Preference Scheme
(E.106) in Hybrid IP networks (D117)
• Expected Result: New call processing QOS class
structure, including a default “best effort” class
IEPS requirement could be documented by
defining an “emergency priority” QOS class