Quality of Service QoS Best Practices for CDMA2000 1xEV-DO Networks

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Introduction to QoS. 2. 3. What is QoS?. QoS is a practice, that refers to the capability of a network to provide:Differentiated service to a selected group of user applications or for specific types of network traffic overVarious transport technologies and across all communication segmentsQoS a

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Quality of Service QoS Best Practices for CDMA2000 1xEV-DO Networks

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1. 1 Quality of Service (QoS) Best Practices for CDMA2000 1xEV-DO Networks Engineering Services Group QUALCOMM, Inc.

2. Introduction to QoS 2

3. 3 What is QoS? QoS is a practice, that refers to the capability of a network to provide: Differentiated service to a selected group of user applications or for specific types of network traffic over Various transport technologies and across all communication segments QoS allows users with different OSI application layer needs to meet their service requirements while utilizing the available network resources efficiently QoS is IP data networking done right, to ensure consistent good user experience

4. 4 Why implement QoS?

5. 5 How is QoS achieved? QoS is achieved by optimal implementation of: Packet Classification Link Efficiency Queue Management Congestion Management Traffic Shaping and Policing Admission Control Every communication segment and network elements across all these communication segments must perform their share of QoS function Air interface, backhaul and IP backbone are few examples communication segments BTS, RAN, PDSN and Routers are few examples of network elements

6. 6 QoS Application Criteria The four horsemen of an QoS applications are: Target Throughput (kbps): The minimum data rate at which usable data can be sent over the communication path from the origination to the destination Delay/Latency (ms): Maximum allowable delay between sending a packet at the origination and reception of that packet at the destination Jitter: The statistically tolerable variance of inter-arrival delay between two consecutive packets within the same IP flow/stream Reliability/PER (%): The number of packets that are in error out of the total number of packets transmitted The mechanism to honor the above per application requirements is Quality of Service (QoS)

7. 7 Examples of QoS Applications Applications with flows that require QoS treatment are: Voice over IP (VoIP) Full-duplex communication with two flows: control and speech Packet Switched Video Telephony (PSVT) Full-duplex communication with three flows: control, audio and video Video Streaming (VS) Half-duplex communication with three flows: control, audio and video Push to Talk (PTT) Half-duplex communication with two flows: control and audio Rapid connection and paging Low Latency Games Full-duplex communication with one flow: control

8. Evolution of QoS in CDMA2000 1xEV-DO Networks 8

9. 9 QoS in a typical 1xEV-DO Network Architecture

10. 10 QoS in 1xEV-DO Rel 0 Networks: User-based

11. 11 User-based QoS in 1xEV-DO Rel 0 Networks: Illustration

12. 12 QoS in 1xEV-DO Rev A: Application-based

13. 13 Application-based QoS in 1xEV-DO Rev A Networks: Illustration

14. 14 QoS Evolution in 1xEV-DO 3GPP2 Framework: SUMMARY

15. QoS in 1xEV-DO Rev A Networks 15

16. 16 QoS Within a 1xEV-DO Rev A Framework

17. 17 What does QoS mean in 1xEV-DO Rev A Networks?

18. 18 Multi-Flow Concept: Concurrent BE and PSVT Traffic

19. 19 How is QoS requested in 1xEV-DO Rev A Networks?

20. 20 Successful QoS Configuration

21. 21 Logical States of QoS in 1xEV-DO Rev A Networks

22. QoS Best Practices 22

23. 23 QoS Best Practices for 1xEV-DO Rev A Networks

24. 24 QoS Best Practices for 1xEV-DO Rev A Networks

25. 25 QoS Best Practices for 1xEV-DO Rev A Networks

26. 26

27. Backup Slides 27

28. 28 PSVT Call Flow: QoS Setup (1 of 2)

29. 29 PSVT Call Flow: QoS Setup (2 of 2)

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