Radio Resource Management in 3G umts by Pakhto
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This document discusses various aspects of the Universal Mobile Telecommunications System (UMTS) including power control, quality of service, and radio resource management. It describes the use of fast power control techniques like inner loop power control to address the near-far problem in UMTS. It also discusses how radio resource management optimizes power control, handovers, admission control and load balancing to manage interference and provide quality of service guarantees. The document concludes by stating that UMTS optimization relies on techniques like adaptive power control and service degradation descriptors.
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Radio Resource Management in 3G umts by Pakhto
- 8. ۲ ۱ Node B User Terminallink Diversity Diversity wideband WCDMA Spreading Band
- 9. ۲ ۲Transport Radio NetworkTransport Channel Bit rate for transport channel connection transport format indicator TFI
- 10. Transport dedicated channelcommon control channel .1 .2 –Broadcast Channels –Forward Access Channel FACH –Paging Channel –Random Access Channel –
- 11. ۳ ۲Spreading & Modulation UMTS ۲ ۳ ۱Scrambling transmitterscrambling base station Spreading ۲ ۳ ۲ ۳ ۲Channelization Codes Channelization Codes WCDMA OVSF codes Spreading
- 13. ۱ ۳ CDMA fast power controlrandom access procedures diversityCDMA UTRA FDD •fast closed loop power control procedure •Inner Closed Loop Power Control •Open Loop Power control
- 14. ۲ ۳ Inner Closed Loop Power ControlCDMA –uplink near-far problem Soft handoff compressed mode SIR Outer Loop Power Control Fast Power Control
- 15. ۳ ۳ Open Loop Power Control CPCHRACH IS – 95 Parallel Configuration Open Loop Power Control Link
- 16. ۴ ۳RACH WCDMA Near for •Scrambling CodesSignaturesBroadcast Channel BCH • •RACH Open Loop Power ControlDownlink
- 18. ۶ ۳ Power control headroom PULPower budgetEb No power control indoor DAS Distributed Antenna System Base station host Spots
- 20. ۴ co-channel UMTS •Conversationaldelayjitter •StreamingdelayMedium level jitter •Interactivedelay round trip delayBit error rate BER
- 21. •Performance applications • •Optimization Radio Resource Management • congestion Quality of Service QoS •Load congestionapplications
- 22. Radio Resource Management RRM –Power –Handoff –congestion •Admission •Load •
- 23. ۲ ۴Power Power criticalWCDMA interference WCDMA WCDMA adjusting RRM Poweruplink transmission User Equipment User Equipment interference
- 24. Power uplink transmission User EquipmentNode BPower block User Equipment Node B Phenomenon–near-far downlink transmission User Equipment receiving Power
- 26. ۱ ۲ ۴ User Equipment User Equipment uplink downlink ±9dBnormal tolerance tolerance12dB User Equipment initiallevel Common Pilot Channel CPICH
- 27. Power UMTSOpen Loop Power Controluplinkdownlink Open Loop Power Control –UplinkOpen Loop Power Control –DownlinkOpen Loop Power Control User Equipment UE Physical Random Access Channel PRACH
- 28. Power Dedicated Physical Control Channel DPCCHUser Equipment UEinner loop ۴ ۲DPCCH Initial Power = DPCCH_Pwr_Offset – CPICH_RSCP DPCCHinitial power
- 30. ۵ UMTS .1WCDMA .2Quality of Service QoS UMTS Updating Quality of Service QoS congestion
- 31. ۲ ۵WCDMA 3GPP Adaptive Step Power Control WCDMA۱۵ command ۱۰ 1500 bps WCDMA
- 32. ۵ ۳ bit rateService Degradation Descriptor SDD SDD 05 SDD UMTS •Conversational •Streaming •Interactive •Background
- 33. Conclusion Universal Mobile Telecommunication System UMTS Optimization
- 34. 1. Bernhard H. Walke, “The UMTS Fundamentals of UMTS” 2nd Edition Seidenberg House Inc 2. Sofoklis A. Kyriazako, 2007 “UTRAN Overall Description” 4rd Edition , IEEE Publications IEEE House Inc 3. George T. Karetsos 2006 “Pactical Radio Resource Management in Wireless Systems” 4th Edition, Artech House Inc 4. Dipo A Parsad, 2004 “Radio Interface Protocol Architecture” 2nd Edition, India – NavLablaries Publications 5. Laiho K Jaana, 2008, “Spreading and modulation FDD” 3rd Edition, Nevada Publication House Inc 6. Wacker Tomas, 2002, “Radio Network Planning and Optimization for 3G UMTS Network” 2nd Edition, Wiley Publication House 7. Elbatji Rachidi, 2007, “Multiplexing and Channel Coding FDD” 3rd Edition, Bouzekri Publication House Inc 8. ebbane A.Y, 2003 “QoS-aware Power Control and Handoff Prioritization in 3G WCDMA Networks” 2nd Edition, IEEE Publication 9. Prof. Sallent Xavier, 2006 “QoS and Radio Resource Management in 3G and Beyond Systems” 2nd Edition, IEEE Publication 10.Philipe Godlewski, 2009 “A Power Control Algorithm for 3G WCDMA System” 3rd Edition, Queen Mary University London 11.Shaikh Ayaz Ahmad, 2002 : Radio Resource Management Strategies in 3G UMTS Networks”, 2nd Edition, Prentice Hell Publication 12.Yue Chen, 2005, “Soft Handover Issues in Radio Resoure Management for 3G WCDMA Networks” Ph.D Thesis, Queen Mary University London 13.Stallings William, 2005 “Wireless Communications and Network”, 2nd Edition, Prentice Hall Publication