Zte hsdpa


Published on

wireless technology

Published in: Technology

Zte hsdpa

  1. 1. HSDPA Technology ZTE UniversityTD&W&PCS BSS Course Team
  2. 2. Content Driver to HSDPA HSDPA Theory HSDPA Terminal and Commercial Situation HSDPA Solution
  3. 3. Driver to HSDPA Competition to operator 2.5G  GPRS: 9.05 -171.2kbit/s, Service deployment is bad  CDMA2000 1x: 153.6kbit/s, Service deployment is good 3G CDMA 1x EV-DO: 2.4Mbit/s WCDMA R99/R4: 2Mbit/s R99 Introduce HSDPAPeak data rate (Kbps) to WCDMAMean data rate (Kbps)
  4. 4. Driver to HSDPA The driver to HSDPAHigh Speed Downlink Packet Access HSDPA is a new technology to enhance WCDMA PS data service HSDPA gives subscribers new experience of more higher speed data service with shorter time delay HSDPA brings more bandwidth and more online subscribers It is necessary and feasible to introduce HSDPA to WCDMA network With consideration of network planning and deployment cost, HSDPA should be applied at the beginning, or at least the Node B should hardware ready for HSDPA HSDPA brings new requirement of transmission and network planning. Pay more attention to it
  5. 5. Driver to HSDPA HSDPA, Mature technology2002.6 R5 released2003.6 HSDPA (High Speed Downlink Packet Access) was added into R5 HSDPA --Max. downlink data rate: 14.4MbpsHSDPA is smoothly evolved from WCDMA R99 without any big effect to the existingR99 network  1 new transport channel: HS-DSCH  3 new physical channels:HS-PDSCH, HS-SCCH and HS-DPCCH  MAC-hs sub-layer, HARQ (Fast Hybrid Automatic Repeat reQuest), Fast Scheduling and AMC (Adaptive Modulation and Coding)
  6. 6. Driver to HSDPA Competition advantage of HSDPA Standard Data rate (Mbps) Subscribers per cell 31×PS64k, 15×PS128k or 7×PS384kWCDMA R99/R4 2M (SF=32, SF=16 or SF=8) 64 HSDPA 14.4 (117.7kbps per user, SF=16, R=3/4, 16QAM) 59CDMA2000 1x EV- 2.4 (only tens of kbps, 200kbps when 8 DO users is configured) HSDPA supports more users while provides higher data rate!
  7. 7. Driver to HSDPA Perspective of HSDPA application Higher data rate More users Richer service Obvious advantage to compete with HSDPA handset other 3G technology like CDMA2000 HSDPA coverage HSDPA Modem HSDPA Modem HSDPA fixed terminal Flexible access HSPDA data card HSDPA data card HSDPA PDAWCDMA R99/R4 coverage Mixed with WMAN (WiMAX) HSDPA PDA and WLAN (Wi-Fi), more advantage of broadband wireless access HSDPA, roundly improves the value of WCDMA network
  8. 8. Content Driver to HSDPA HSDPA Theory HSDPA Terminal and Commercial Situation HSDPA Solution
  9. 9. HSDPA Theory Evolve from R99/R4 to HSDPA RLC RLCUE UTRAN MAC MAC-d MAC HS-DSCH DSCH HS-DSCH DSCH (add FP FP FP FP MAC-hs) MAC-hs L2 L2 PHY PHY PHY PHY L1 L1 (add (add 3 process) channels) Uu Iub/ IurRNC, Node B: add HS-DSCH FP protocol process, involve Iub/IurNode B: add MAC-hs, responsible for AMC, HARQ, etc.Node B: add 3 physical channels: HS-PDSCH,HS-SCCH,HS-DPCCHUE: add MAC-hs, physical channels and process, modulation
  10. 10. HSDPA Theory New physical channels of HSDPA DCCH(信令)+UL DTCH(PS业务) DPCH HS-PDSCH UE UTRAN HS-SCCH CN HS-DPCCH DL DTCH (PS业务) R99 channel HSDPA channel HS-PDSCH is the bearer of HS-DSCH, transfer HSDPA user data (downlink) 2ms TTI, 3 slots, spread factor is fixed to 16, multiple users & multiple codes, modulation method: QPSK and 16QAM HS-SCCH bears information of HS-DSCH such as UE specialized mask code, modulation and coding policy, etc. (downlink) 2ms TTI, 3 slots, spread factor is fixed to 128 HS-DPCCH bears feedback information of HS-PDSCH such as Channel Quality Indication (CQI), H-ARQ confirm information ACK/NACK, etc. (uplink) 2ms TTI, 3 slots, spread factor is fixed to 256
  11. 11. HSDPA Theory HSDPA working procedure ②Evaluation, HS-DSCH parameters setting Data Packet④Receive data from HS-DSCH according to Detecting HS-SCCH Node B RNC (AMC and HARQ)  AMC, modulation and coding selection  HARQ, lowers the time delay, improves the data throughput  Fast scheduling, quick decision
  12. 12. HSDPA Theory Key technology: AMC (1)  Adaptive Modulation and Coding (AMC), Node B can adjust modulation (QPSK, 16QAM) and coding rate (1/3, 3/4, etc) in time according to the feedback channel state from UE. So data transferring can follow the step of channel state changing in time, it is a good technology for link self-adaptive  For long time delay packet data, AMC can improve systemStandard AMC Remark capacity without addR99/R4 N Quick power control interference to neighbor cellsHSDPA Y Satisfy 15dB SIR dynamic range
  13. 13. HSDPA Theory Key technology: AMC (2) Modulation (QPSK, 16QAM) self-adaptive Good channel state: 16QAM CQI (Report periodically) Bad channel state: QPSK Coding rate (1/3, 3/4, etc.) self-adaptive Good channel state: 3/4 Node B Bad channel state: 1/3Efficiently utilize the channel conditionGood channel state: higher speed Codes adjustingBad channel state: lower speed Good channel state: more codes Bad channel state: fewer codes
  14. 14. HSDPA Theory Key technology: AMC (3)HSDPA, R99/R4 channel bearing ability comparison 16QAM and higher coding rate Standard Data rate (kbps) SF Modulation Coding rate R99/R4 384 8 QPSK 1/2 HSDPA 720 16 16QAM 3/4  HSDPA, the service bearing ability of one channel is further larger than R99/R4 by using more efficient modulation and coding rate, while SF is twice as R99/R4  As using bigger SF, system can support more users
  15. 15. HSDPA Theory Key technology: AMC (4) Multiple coding rates HSDPA throughput, relative with modulation & coding rate Modulation coding Data rate Data rate Data rate rate (1 code) (5 codes) (15 codes) QPSK 1/4 120kbps 600kbps 1.8Mbps QPSK 1/2 240kbps 1.2Mbps 3.6Mbps QPSK 3/4 360kbps 1.8Mbps 5.4Mbps 16QAM 1/2 480kbps 2.4Mbps 7.2Mbps 16QAM 3/4 720kbps 3.6Mbps 10.8Mbps HSDPA can provide data rate per user up to 10.8Mbps (16QAM, 3/4) by AMC and multiple codes technology In the situation of high speed, HSDPA requires high channel condition
  16. 16. HSDPA Theory Key technology: HARQ (1) Standard HARQ Remark FEC is in high layer R99/R4 N ARQ is in RLC layer, channel feedback is slow HSDPA Y Includes physical layer HARQ and HARQ entity in MAC-hs  Hybrid Automatic Repeat reQuest (HARQ) is a MAC-hs combined technology with Forward Error HARQ Correction (FEC) and Automatic Repeat reQuest (ARQ)  HARQ can provide flexible and subtle adjustment TFRC for its process by cooperated with AMCL2L1 L1 HARQ
  17. 17. HSDPA Theory Key technology: HARQ (2)Advantage: improve transferring reliability FDisadvantage: lower utilization in bad E H channel state Combine FEC and ARQ, each C A sending packet includes errorAdvantage: good performance in A R detection bit and error correction bit lower Bit Error Rate (BER) R QDisadvantage: bad performance in high BER Q Send Receive Send Receive Packet A Packet A Discard Reserve Resend Error packet A Resend data whole packet Error packet A Lower efficiency Packet A Packet A Longer time delay missing data Higher efficiency Packet A Shorter time delay missing Packet A data Packet B Packet B Soft combination HARQ phase I HARQ phase II, III (Resending is in RNC,R99) (Resending is in Node B, HSDPA)
  18. 18. HSDPA Theory Key technology: Quick scheduling (1) HS-DPCCH (ACK/NACK and CQI) Quick channel feedback HSDPA channel1 TS = 2560 Chip feedback time delay is about 8.5 TS HS-SCCH HS-SCCH HS-PDSCH With quick channel feedback, HSDPA 2 TS 7.5 TS +/- 128 Chip N TS can suitably adjust Channel feedback coding rate, codes,Standard TTI (ms) Remark time delay (ms) modulation, etc. in R99 10 100 (at least) time according to Supports continuous the channel stateHSDPA 2 5.67 feedback, R5 also supports 10ms TTI
  19. 19. HSDPA Theory Key technology: Quick scheduling (2) Scheduling policy Every user get equal service time, but the traffic Time fairness maybe not equal, the fairest algorithm but has the lowest traffic Every user get the same traffic, but the time maybe Traffic fairness not equal, has the lower utility of system resource because it will schedule the UE with bad channel state Only the user in best channel state (biggest C/I) will Max-C/I get the service priority in each turn, the biggest traffic but has the worst fairnessProportional fairness Weighted compromise of above algorithms and has bigger system traffic and better service fairness UE1
  20. 20. HSDPA Theory Advantage of HSDPA Comparing item R99/R4 HSDPASystem capacity (Mbps) 2.668 14.4 Spectrum efficiency 537.6 2795.2 (Kbit/(MHz*Cell)) Inter-frequency hard HO Intra-frequency soft HO System handover Only hard handover Intra-frequency softer HO Inter-system HO (GSM) Open loop, Close loop (Inner loop, Outer loop) HS-PDSCH adopts slow PC or even Power control PC, Quick, Slow PC no power control Modulation QPSK QPSK, 16QAM AMC, HARQ, Short TTI and QuickLink adaptive technology Quick PC and soft HO channel feedback MAC-hs N/A For faster scheduling HSDPA R99/R4 Provides various speed Adjust power to with stable power guarantee service speed (stable power, (stable speed, adjustable speed) adjustable power)
  21. 21. Content Driver to HSDPA HSDPA Theory HSDPA Terminal and Commercial Situation HSDPA Solution
  22. 22. HSDPA Terminal and Commercial Situation Terminal Changing caused by HSDPA UE changingPowerful 3G terminals Much more powerful, attractive HSDPA terminals  faster processor  larger memory  advanced receive and process algorithm  16QAM demodulation, multiple decoding  MAC-hs process  multiple codes HSDPA terminal, first choice for high-end commercial application
  23. 23. HSDPA Terminal and Commercial Situation HSDPA terminal category and capability HSDPA terminal HSDPA handset HSDPA pc card HSDPA PDA Maximum Minimal TTI Maximum service speed UE category Modulation channels interval (Mbps) Category 1-6 5 3-1 1.2~3.65 Category 7 10 1 7.2 QPSK Category 8 10 1 7.2 16QAM Category 9 15 1 10.12 Category 10 15 1 14.4 Category 11-12 5 2 1.8 QPSK Different UE supports various channels, minimal TTI and other parameters UE listed in Category 11 is in worst receive capability, Category 10 is the best
  24. 24. HSDPA Terminal and Commercial Situation HSDPA commercial process HSDPA standard has been determined HSDPA has adequate test instruments HSDPA technology has been tested in application Manufactures provide HSDPA commercial terminals in 2005 USA, Japan and the other operators start the HSDPA network construction ZTE equipment are HSDPA ready Terminals 2005 2Q, several manufacture promote HSDPA trial version terminal 2005 4Q, promote commercial HSDPA terminal Operator to deploy HSDPA Cingular plan to deploy HSDPA in major city, 2006; till the end of 2006, to provide the HSDPA service in most part of metropolitans. NTT Docomo will deploy HSDPA in first quarter 2006; In UK, mmO2 will launch the service in fourth quarter 2005;in HK H3G will provide commercial service in first quarter 2006
  25. 25. HSDPA Terminal and Commercial Situation High data service brings new experience Adopt the HSDPA, operator can provide higher bandwidth service. To deploy new service. Colorful email Multi-access 这家餐厅好像不错 是啊, 明天去吧 Multimedia Download Cartoon mail NEWS MOVIE MUSIC
  26. 26. Content Driver to HSDPA HSDPA Theory HSDPA Terminal and Commercial Situation HSDPA Solution
  27. 27. HSDPA Solution Link budget for HSDPA HSDPA link budget R99/R4 link budget Mode1 Mode2 Mode3 CS12.2 CS64 PS384 NodeB TX power 40 40 40 27 30 38 Antenna gain 18 18 18 18 18 18TX Cable loss 2 2 2 2 2 2 EIFR 56 56 56 43 46 54 HSDPA can achieve-174 same coverage as-174 -174 Thermal noise density the -174 R99/R4 under same data rate -174 -174 Thermal noise -108.157 -108.157 -108.157 -108.1566878 -108.1566878 -108.157 Noise figure 5 5 5 5 5 5 Interference margin 3 3 3 3 3 3 Service rate 423 368 635 12.2 64 384RX Code number 5 4 5 1 1 1 Process gain 19.579909 10.18483 7.815575 24.9797 17.7815125 10 Eb/No 9 9 9 7.2 7.1 6.4 Rx sensibility -100.737 -101.342 -98.9723 -117.9364017 -110.8382003 -103.757 UE antenna gain 0 0 0 0 0 0 Body loss 0 0 0 2 0 0 Fast fading margin 0 0 0 2 2 2 Soft handover gain 0 0 0 2 2 2Others Fading deviation 8 8 8 8 8 8 Penetration loss 20 20 20 20 20 20
  28. 28. HSDPA Solution Combination of HSDPA and R99/R4 10000 9000 HSDPA 8000 R99 PS 7000 DL Capability (kbps) 6000 5000 4000 3000 2000 1000 0 0 10 20 30 40 50 60 70 80 90 100 distance/cell_radius % HSDPA makes the balance between the coverage and the throughput, increase the coverage decrease the throughput. HSDPA provides about 200kbps in the edge of cell, Less than the R99/R4 DCH. Recommend to combine the HSDPA and R99/R4 DCH together, at the edge of cell UE can “handover” into DCH. With this combination, you can take the most advantage from R99/R4 and HSDPA.
  29. 29. HSDPA Solution Combination of HSDPA and R99/R4 Num of HSDPA user 15 10 5 0 -2 0 2 4 6 8 10 12 14 16 Available Num of SF16 for HSDPA 150Num of R99 user 100 50 0 -2 0 2 4 6 8 10 12 14 16 Available Num of SF16 for HSDPA
  30. 30. HSDPA Solution Combination of HSDPA and R99/R4 6 5Cell Hsdpa Thoughput Mbit/s 4 3 5 codes HSDPA only 2 10 codes HSDPA only 15 codes HSDPA only 1 0 0 2 4 6 8 10 12 14 16 18 20 HSDPA User Num
  31. 31. HSDPA Solution Combination of HSDPA and R99/R4 R99 Capability Loss 100 90 80R99 User Num Percent % 70 60 50 HSDPA heavy load HSDPA light load 40 30 -13 -12 -11 -10 -9 -8 -7 -6 -5 -4 -3 Total HSDPA Power offset to BsTxPwer (dB)
  32. 32. HSDPA Solution Combination of HSDPA and R99/R4 R99 Capability Loss 100 6.5 6 90 5.5 80 5R99 User Num Percent %SectorThroughput Mbit/s 4.5 70 4 R99 N/A 60 R99 36dBm 3.5 R99 38dBm R99 40dBm 3 50 2.5 HSDPA heavy load HSDPA light load 40 2 1.5 30 -13 1 -12 2 -11 -10 3 -9 4 -8 5 -7 -66 -5 7 -4 -3 8 Total HSDPA Power offset to BsTxPwer (dB) User Num
  33. 33. HSDPA Solution Combination of HSDPA and R99/R4 6 5 R99 Throughput Hsdpa Throughput Cell Throughput 4Throughput Mbit/s 3 2 1 0 10 20 30 40 50 60 70 80 90 100 110 R99 12.2k User Num
  34. 34. HSDPA Solution Combination of HSDPA and R99/R4 6 5.5 5Hsdpa Throughput Mbit/s 4.5 4 3.5 6 3 5.5 2.5 0 R99 Users;10 Hsdpa Users 5 20 R99 Users;10 Hsdpa Users 2 Cell Throughput Mbit/s 40 R99 Users;10 Hsdpa Users 60 R99 Users;10 Hsdpa Users 4.5 1.5 10 20 30 40 50 60 70 80 Hsdpa Power/ Cell Tx Power % 4 3.5 3 0 R99 Users;10 Hsdpa Users 2.5 20 R99 Users;10 Hsdpa Users 40 R99 Users;10 Hsdpa Users 60 R99 Users;10 Hsdpa Users 2 10 20 30 40 50 60 70 80 Hsdpa Power/ Cell Tx Power %
  35. 35. HSDPA Solution ZTE HSDPA construction solution Network construction Frequency point Resource condition Advantage and disadvantage Recommended deployment plan assignment F1: HSDPA+R99/R4 Less inter-frequency handover, Advantage: easy to do After the network admission control, load control and resource control construction finished, to Intra-frequency plan power control can be achieved achieve the high demand of within one same frequency cell. Disadvantage: do not have voice and PS downlink. F2: HSDPA+R99/R4 user detail classification Situation I: if HSDPA frequency Advantage: voice user With the development of 3G, point support normal handset, all +HSDPA users get good to provide dedicated F1: R99/R4 the resource have to be assigned service frequency point for HSDPA Inter-frequency plan within various different frequency PC card (only PS domain) cells. Disadvantage: resource control will be difficult in F2: HSDPA Situation II: HSDPA frequency situation I, maybe some point are only used for PC card, frequency point resource will resource management can be be wasted at the beginning achieved more easily. Phase II :all the hot spot and Phase I :several hot spot, several macro sites to deploy HSDPA and the important building to deploy HSDPA HSDPA construction area f1 f2 f3 R99/R4+ R99/R4+ HSDPAZTE solution HSDPA HSDPA (PC card) If necessary, use Phase I, II Phase III a carrier only to support PS data
  36. 36. HSDPA Solution Handover between HSDPA and R99/R4 handover motivation description policyHandover based The traffic load for trigger handover while the traffic load ofon traffic HSDPA and R99/R4 HSDPA cell is too heavy and the load of has large difference. R99/R4 cell is lower, or the traffic load of Then we trigger the different HSDPA cells are not in balance handoverHandover based According to the service Low speed data service can be handledon service type and data rate to with FACH, Streaming service can be choose HSDPA or handled with DCH; the rest high speed PS R99/R4 network data service or non-real time data service should be assigned to HSDPA Handover between HSDPA, R99/R4 and DCH/FACH channels,can guarantee the service stability of HSDPA
  37. 37. HSDPA Solution Network analysis for HSDPA and R99/R4 After the 3G network construction, the basic demand of WCDMA network should adopt HSDPA function, with soft smooth upgrade ability HSDPA is not constructed as a individual network, HSDPA is a enhanced technology of WCDMA (throughput, users) Network construction and plan for R99 and HSDPA based on the “one-shot planning, multi-stage deployment” HSDPA and R99 share the same network, Node B supports HSDPA function  At dense traffic area (capacity is restricted), HSDPA can share the same site of R99 and achieve the same coverage of it.  Capacity and coverage is a balance relationship, increase the network performance to the maximum by making a balance between them.
  38. 38. HSDPA Solution HSDPA for major area Area type Square (km2) Erl Dense urban 91.5 3527 Urban 179.78 4873 Suburb 3000.5 2100 total 3271.78 10500 Fully HSDPAMajor area coverage for occupy80% traffic major area! Major area have no more than 10% proportion Major area:dense urban + urban
  39. 39. HSDPA Solution HSDPA outdoor coverage Adaptive modulation Good channel state: 16QAM AMC Adaptive coding rate Good channel state: 3/4 Node BHSDPA requires a good channel condition for high speed service: Good channel state Near to Node B Micro Node B is more suitable for HSDPAAt beginning, HSDPA is suitable for micro Node B coverage of outdoor hotspot
  40. 40. HSDPA Solution HSDPA indoor coverageHSDPA indoor coverage CBD (focus on) Pico B01 C  Office, hotel, etc  Shopping center, airport, etc RRU B03 R Power distributor the indices of indoor distributed components (like power distributor) Fiber required by HSDPA and R99 are same,So the existing indoor distributed system of R99/R4 is suitable for HSDPA Twisted Feeder pair Concern of HSDPA indoor coverage Transm Macro Node B  Is the existing indoor distributed system ission or base band of R99/R4 suitable for HSDPA? pool  Macro Node B+Indoor distributed system Solution  Is capacity of the existing indoor  Macro Node B/base band pool+RRU+ distributed system enough?Is the Indoor distributed system transmission enough?  Micro Node B+Indoor distributed system  Pico
  41. 41. HSDPA Solution HSDPA network planning case study Planning Area: 30Km2 Subscribers: 80000 Number of sites Site radius (S111) Existing R99 52 537m planningExisting R99 sitesHSDPA planning NE Cost of NE Total cost Advantage CN SamePlanning the same The capacity of PS RNC Add 5%number of sites as Add 8% increases 80 ~120% Node B Add 10% R99/R4
  42. 42. HSDPA Solution HSDPA transmission solutionHSDPA requires more transmission resource, because of the changingof capacity of Node B and traffic modeFor capacity For traffic mode  R99 cell peak data rate:  The PS traffic mode will change greatly, 7×384Kbps=2.688Mbps more PS traffic will rush into HSDPA system  HSDPA cell peak data rate: 15×960Kbps×3/4 = 10.8 Mbps  Peak throughput of HSDPA cell is 4 times as that of R99 cell  Peak traffic of 3CS HSDPA Node B: 10.8×3×1.3×80% = 32M  Peak throughput of HSDPA cell is 4 times as that of R99 cell, and mean throughput of HSDPA cell is 2 times as that of R99 cell  Consider both capacity and traffic mode, transmission resource of Iub at beginning should be reserved 4 times as before or at least 2 times
  43. 43. HSDPA Solution ZTE serialized Node B support HSDPA flexible update Iub Interface Features Before HSDPA After HSDPA Update Update  Advanced design,HSDPA functions have been embeddedAfter HSDPA Control Update Before HSDPA into hardware. Update  Just update software to support HSDPA functions. HSDPA Processor HSDPA Processor  No additional hardware is needed! DL Coder UL Decoder DL Base-band UL Base-band Mid-frequency
  44. 44. HSDPA Solution ZTE Node B hardware support HSDPA HSDPA functions have already been embedded into ZTE serialized Node B hardware. The base-band processing chip supports 16QAM modulation. Only software update is needed for Node B to support HSDPA. Powerful base-band processing ability. For the case of updating the R99 cell into R99/HSDPA, no more base-band processing board is needed for Node B. As for RNC and CN, the introduction of HSDPA will only increase the data traffic which means only additional interface hardware resource are needed. ZTE Node B is designed based on the most advanced HSDPA technology in the world. It is absolutely ensured that to upgrade from R99 to HSDPA, no board is required to be changed! The base-band processing board also possesses a unique feature that is it supports the networking of HSDPA and R99 with either the same carrier or not! The most advanced base band processing in the world!
  45. 45. HSDPA Solution ZTE serialized Node B totally support HSDPA BBUA indoor/outdoor base-band pool: maximum processing capacity is up to 15CS B01C pico Node B: 1C1S configuration BBUB B01C B09A B09 B06C  B09 indoor macro: support up to 3C3S and 6CS RRU B03C/B03R  B09A outdoor macro: support up to 3C3S and 6CS RRU  B06C/B03C indoor/outdoor micro: support up to 2C3S/3C1S.  B03R indoor/outdoor RRU: support up to 3C1S
  46. 46. HSDPA Solution ZTE HSDPA Roadmap HSDPA terminal, Version 06/1Q test, 06/2Q commercial HSDPA PC card, 05/3Q test, 06/1Q  Serialized Node B commercial R5V4.5 hardware support HSDPA HSDPA  Completed HSDPA Phase II trial system R5V4.0 HSDPA Phase IV3.0 R4 HSDPA commercial phase II HSDPA commercial phase IV2.0 R99 2003/2Q 2004/4Q 2005/3Q 2006/1Q Time
  47. 47. HSDPA Solution HSDPA PC card (MU330) Functions  WCDMA 2.1GHz, GSM900/1800/1900  WCDMA 384KDL/128KUL, GPRS Class 10  SMS, Voice  HSDPA  ETSI AT command interface  OS: Windows 2000, XP  Language: Chinese, English, etc.  3V SIM/USIM card
  48. 48. HSDPA Solution HSDPA handset (Q508) Functions  WCDMA, GSM900/1800/1900  WCDMA 384DL/128KUL, GPRS Class 10  Voice, MMS, WAP, Email, JAVA, Download  Video phone, Streaming media, PTT  LCS (A-GPS)  MP3/MPEG4  Blue tooth/USB/mini-SD  HSDPA Specs  Dual camera (2000K pixels)  Dual LCD: 260K colors  Main LCD: 2.2”(240×320)  MIDI: 72 chord
  49. 49. HSDPA Solution ZTE HSDPA solution conclusion ZTE serialized Node B is already hardware ready for downlink 14.4M, only software upgrade is All the Node Bs support HSDPA needed ZTE RNC and CN, unified platform, 80G switching capability, high integration, high capacity, smooth evolution, to ensure the deployment of HSDPA HSDPA can share carrier with R99/R4, or use a exclusive carrier Support handover between HSDPA, R99/R4 and 2G Support simultaneous service of HSDPA and voice (or video telephony) Support at least 64 users per cell HSDPA can share base band board with R99/R4
  50. 50. Exercise pls describe the differentia of HSDPA and R4. HSDPA introduce new physical channels, they are ( ) ( )( ). pls describe the key technology of AMC pls describe the key technology of HARQ. pls write down the main quick scheduling methods.