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Study Group 13 “Futures Session” Working Party 4 Network Performance and Resource Management

July 25, 2003. Most Active Questions Q4/13 -- Broadband and IP related resource management Q6/13 -- Performance of IP-based networks Q8/13 -- Transmission error and availability performance Less Active Questions Q7/13 -- B-ISDN/ATM cell transfer/availability performance

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Study Group 13 “Futures Session” Working Party 4 Network Performance and Resource Management

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  1. July 25, 2003 Most Active Questions Q4/13 -- Broadband and IP related resource management Q6/13 -- Performance of IP-based networks Q8/13 -- Transmission error and availability performance Less Active Questions Q7/13 -- B-ISDN/ATM cell transfer/availability performance Q9/13 -- Call processing performance Study Group 13 “Futures Session” Working Party 4 Network Performance and Resource Management

  2. Accomplishments • Y.1221 (Traffic and congestion control in IP-based networks ) • I.378 (Traffic and congestion control at the AAL2 ) • Goals • Update I.371 (Traffic and congestion control in B-ISDN) and integrate it with I.371.1 (GFR ATM transfer capability) •   Add methods and tools for IP TE to Y.1221(Section 8) • New Recommendation on traffic/congestion control in MPLS (?) • New Recommendation on traffic/congestion control in Ethernet (?) Question 4/13 Broadband and IP Related Resource Management

  3. Accomplishments • ·  Y.1540 (IP packet transfer/availability parameters) • Y.1541 (NP/QoS Objectives for IP-Based Services) • Goals • Develop accumulation formulas for all Y.1541 parameters • Define QoS apportionment procedures for IP-based networks • Contribute to SG 11 Signaling Rqmts (TRQ.IPQoS.Sig.CS1) •   Complete Y.MPLSperf (MPLS performance parameters) •   Complete Y.TCPperf (TCP performance parameters/objectives) •   Develop Y.ETHperf (Ethernet performance) Question 6/13 Performance of IP-Based Networks

  4. Accomplishments •   G.821R, G.826R, G.828R, G.829R (PDH error performance) • G.8201 (OTN error performance) • G.827R/G.827.1R (CBR path availability) • Goal (?) • Develop new error performance Rec(s) for services based on 8B10B signals, e.g., Ethernet, fiber channel, ESCON, etc.* • * Coordinate physical (Q8/13) and packet (Q6/13) work Question 8/13 Transmission Error and Availability Performance

  5. Decisions • Expand I.356 to address ATM over ADSL access technology • Develop I.356 text addressing ATM-IP network interworking • Replace I.356 “country-based” with “inter-operator” model • Goals (?) •   Implement planned I.356 revisions •   Develop new Recommendations • I.35AAL2 (Performance of AAL2 switched connections) • I.35av (B-ISDN/ATM SVC availability) • Question inactive during the current Study Period Question 7/13 B-ISDN/ATM Cell Transfer and Availability Performance

  6. Progress • I.358R (Call processing performance for B-ISDN SVCs) • Draft Y.1530 (Call processing performance for voice in hybrid IPnetworks) • Goals • Complete Y.1530 • Identify call processing protocol(s) for hybrid IP networks • Specialize existing (generic) parameter definitions • Specify and allocate performance objectives • Harmonize Y.1530 with TRQ.IPQoS.Sig.CS1 and E.106/Y.roec • Y.1530 has been hindered by lack of a clear protocol basis Question 9/13 Call Processing Performance

  7. (QoS, Flow Signaling) Control Network Control Network Control Network Bearer Network Bearer Network Bearer Network Issue 1 -- QoS (and Flow) Signaling  Voice  Video  Data  Call Control Voice  Video  Data  Call Control Customer-Perceived QoS  Subjective Descriptors  Objective Estimators NI to NI QoS (Y.1541)  Speed, Accuracy, Dependability  Service Availability (Future) NI NI Terminal Terminal Network QoS Network QoS Network QoS

  8. NGN Characteristics • Hybrid/Adaptive Infrastructure (ATM, IP, MPLS, Ethernet, …) • Numerous, Dynamic, and Complex Network Functions • Code, protocol, media, format conversions (some entropy reducing) • Dynamic connectivity and traffic control (mobility, capacity, QoS, ...) • Information collection and distribution (e.g., searching, browsing) • Performance Implications • More Dynamic Performance Boundaries • More Complex Measurement Issues • ‘Partial Success’ and Non-Discrete Outcomes • Different information at input and output interfaces • Perception-Based, Machine-Based MetricsNeeded Issue 2 -- QoS Measurement in NGNs

  9. API Two Virtual Controls May not Work Together. TCP(window control) UDP IP(Diffserve,IP transfer capability) MPLS Ether(Fast, Giga,) Virtual ATM(ATM transfer capability) SDH(Virtual Container) Λ(2.4G,10G,40G..) Physical Fiber(DWDM,CDWM) Issue 3 -- NGN Traffic Management API will request network to provide a suitable combination of traffic controls. NGN should be adaptive so that it can respond the API’s request.

  10. Key Technologies and Future Work Areas • IP QoS -- accumulation, apportionment and signalling • MPLS -- performance, traffic and congestion control • Ethernet -- parameters, objectives, QoS classes ( SLAs) • IP/Optical -- network performance, resource management • Major Themes • Network convergence (IP, PSTN, optical, wireless, …) • QoS and RM interworking among different technologies • Dynamic QoS control, multi-layer traffic engineering • Cross-cutting, integrative NP/QoS control and resource management standards will be needed Summary -- Planning Context Network Performance/Resource Management

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