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1、Targets for the SG 13 Caracas Meeting Working Party 4/13 Network Performance and Resource ManagementTopic OverviewWP 4/13 Structure and ResponsibilitiesPlanned Meeting ScheduleKey Technical IssuesExpected Results無(wú)痘網(wǎng) http:/ Party 4/13 Structure and ResponsibilitiesQuestionSubjectRapporteurRecommendat

2、ions4Broadband and IPRelated ResourceManagementS. YonedaI.371, Y.iptc6Performance of IP-BasedNetworks and theEmerging GIIH. KimI.350, I.351/Y.801/Y.1501, I.353,I.355, Y.800, Y.1540, Y.15417B-ISDN/ATM CellTransfer and AvailabilityPerformanceD. MustillI.356, I.357, I.381, (ex.I.35AAL),I.35AAL2, I.35av

3、8Transmission Error andAvailability PerformanceG. GarnerG.821, G.821.1, G.826, G.827,G.827.1, G.828, G.829, G.921,G.optperf9Call ProcessingPerformanceT. ShinomiyaI.352, I.354, I.358, I.359, Y.1530MeetingT 15 May W 16 May Th 17 May F 18 MayM 21 MayT 22 May W 23 MayQ.4*Q.6Q.7Q.8Q.9Plenary * Proposed j

4、oint session with Q.2Planned WP 4/13 Caracas Meeting Schedule 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, utilisatio

5、n 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 al

6、so progress work on Draft Rec. Y.iptc (Traffic Control and Resource Management in IP-Based Networks)Question 6/13Performance 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 los

7、s 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 r

8、ecommended Joint Meeting (SGs 13, 16, 12, 11) to harmonize QOS ClassesQoS ClassesNature of the networkperformance objectiveDefaultobjectivesClass 0Class 1(Interactive)Class 2(Non-Interactive)Class 3(U class)IPTDUpper bound on theMean IPTD(Note 6)No default150 ms400 ms1 sec(Note 3)UIPDVUpper bound on

9、 the1-10-4 quantile of IPTDminus the minimumIPTD(Note 1)No default50 ms(Note4)50 ms(Note 4)1 sec(Note 3)UIPLRUpper bound on thePacket loss probabilityNo default1*10-3(Note2)1*10-3(Note 2)(Note 5)1*10-3UIPERUpper bound1*10-4(Note 7)defaultdefaultdefaultUSPRUpper bounddefaultTBDdefaultdefaultdefaultUT

10、able 1/Y.1541 Provisional IP QOS Class Definitions andNetwork Performance ObjectivesQuestion 7/13B-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)

11、network models (TD11) Expected Results: Proposed new performance models and allocation methodsQuestion 8/13Transmission Error and Availability Performance Issue - “G.optperf” allocation model (D101) Proposal: Change international paths to multi-operator paths crossing international borders Questions

12、: - 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:

13、use block allowance and routing factor, satellite allocation from G.828) Likely Results: New HRP and allocation proposalsQuestion 9/13Call 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)