RAN2489 Carrier Bandwidth 3.8MHz



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The latest version of this NEI can be found hereFor internal use MBB CS Network Engineering / Bartosz Bieda / 06.03.2013 1 © 2013 Nokia Solutions and Networks With and Without the Feature Main Menu RAN2489+CN5088: Refarming Solution with GSM RAN2489 RAN2489 Not activated Activated • BW filtering can be narrower, i.e equal to: • Operator is limited to use standard BW filtering which is: • Downlink 4.6MHz (4.4MHz) (both are internal use only) • Downlink: 4.8MHz • Uplink: 3.8MHz • Uplink: 4.2MHz • WCDMA –GSM carrier spacing must equal, or be higher than 2.0MHz • WCDMA –GSM carrier spacing must equal, or be higher than 2.2MHz • Possibility of two (2) additional BCCH carriers when GSM frequency refarmed • For example, when the operator has 8.4MHz band it may deploy: • Spectrum is better utilized o 1xWCDMA 4.2MHz carrier and 19xGSM carriers • 1xWCDMA 3.8MHz carrier and 21xGSM carriers Example of frequency plan for 4.2 Refarming (legacy solution) Example of frequency plan for 3.8 Refarming Solution fGSM TCH 2.2MHz 2.4MHz fGSM BCCH fGSM TCH 2.0MHz 2.2MHz fGSM BCCH WCDMA WCDMA 4.8Mhz / 4.2 MHz 4.6MHz / 3.8MHz f[MHz] f[MHz] For internal use MBB CS Network Engineering / Bartosz Bieda / 06.03.2013 2 © 2013 Nokia Solutions and Networks Interdependencies Main Menu RAN2489 Carrier Bandwidth 3.8 MHz RAN2489 designed to support: RAN2489 Carrier Bandwidth • Full functionality means that Radio Module could change Rx 3.8 MHz and Tx BW: • Radio Modules that support full functionality o FXCA / FXDA / FHDA HW version A.203 or later: • RAN2046 - Flexi 3-sector RF Module 850 (FXCA), RU20 • RAN1768 - Flexi 3-sector RF Module 900 (FXDA), RU20 • RAN1895 - Flexi RRH 2TX 900 (FHDA), RU30 EP1 RAN2046 or • Earlier HW versions of FXCA / FXDA / FHDA are not Flexi 3-sector RF Module 850 considered to support RAN2489 RAN1768 or Flexi 3-sector RF Module 900 RAN1895 or Flexi RRH 2TX 900 For internal use MBB CS Network Engineering / Bartosz Bieda / 06.03.2013 3 © 2013 Nokia Solutions and Networks Flexi BTS Multimode System Module (FSMD) o RAN1848 .Flexi BTS Multiradio System Module (FSMF) • With HW not listed here one cannot commission the BTS successfully.Flexi BTS Multimode System Module (FSME) o RAN2262 .2013 4 © 2013 Nokia Solutions and Networks .03. Interdependencies Main Menu RAN2489 Carrier Bandwidth 3. RAN2489 Carrier Bandwidth 3.Flexi BTS Multimode System Module (FSMC) o RAN1016 .8 MHz Supported System Modules: • Flexi Rel2 or Rel3 (at least one of): o RAN2382 .8 MHz RAN2382 RAN1016 RAN1848 RAN2262 Flexi BTS Multimode or Flexi BTS Multimode or Flexi BTS Multimode or Flexi BTS Multiradio System Module System Module System Module System Module For internal use MBB CS Network Engineering / Bartosz Bieda / 06. Technical Details For internal use MBB CS Network Engineering / Bartosz Bieda / 06.2013 5 © 2013 Nokia Solutions and Networks .03. 2MHz BW BW 3.3 WCDMA 1–2 ~ 0.5 ~ 1.2013 6 © 2013 Nokia Solutions and Networks .0 o The highest data rates are not feasible (they are reachable with perfect QAM RF conditions only – lab measurements) 10 – 11 ~ 1.7 ~1.5 Remarks: 4–5 ~ 0.0 QPSK (standard 3GPP RRC filter) 5.0 not feasible • For 3.2MHz on (EDCH) 4.3 ~0.5 ~ 3.0MHz 3.2MHz (default) filter almost all of scenarios are fine: o Some small degradations are acceptable 8 – 10 ~ 1.5 QPSK 2–4 ~ 0.5 ~3.03.8MHz (default) f[MHz] <1 ~ 0.0 ~ 3. Detailed Technical Information Main Menu Rx filter mismatch comparison Performance degradation of E-DCH (HSUPA) for single user transmission caused by filters’ mismatch UL Channel fW UL 4.0 • For 4.0 ~ 5.1 ~0.8 – 8 ~ 1.3 ~ 0.0 ~ 2.0 QPSK • Values in the table reflect the influence of the mismatch between RX filters (implemented at BTS) and filter which is usually used by UE 5.8 ~ 0.2 ~0.8MHz filter the influence of the mismatch is bigger (high speed throughput services are considerably degraded and even not feasible) >11 not feasible not feasible not feasible • External interferes come additionally For internal use MBB CS Network Engineering / Bartosz Bieda / 06.0 ~1.2 ~ 0.5 ~3.7 ~1.8MHz Loss compared to ideal RRC [dB] Data rate Rx Filter Modulati [Mbit/s] Rx Filter Rx Filter 4. 8MHz (default) filter all scenarios are feasible 16QAM • For 4.03.0 64QAM >17 ~11.6MHz filter the influence of the mismatch can be observed (high 10 – 14 ~ 2.1 speed throughput services are significantly degraded) 14 – 17 ~ 4.4MHz BW fW Data rate Loss [dB] DL 4.6 • For 4.3 filter (implemented at BTS) and filter which is usually used by UE (standard 3GPP RRC filter) 8 – 10 ~ 0. Detailed Technical Information Main Menu Tx Filter mismatch comparison Performance degradation of HS-DSCH (HSDPA) for single user transmission caused by filters’ mismatch DL 4.2 • Values in the table reflect the influence of the mismatch between TX 5–8 ~ 0.6MHz BW [Mbit/s] Modulation DL 4.6MHz BW f[MHz] <1 < 0.1 QPSK Remarks: 4–5 ~ 0.8MHz (HS-DSCH) Tx Filter 4.0 64QAM For internal use MBB CS Network Engineering / Bartosz Bieda / 06.7 64QAM • External interferes comes additionally 17 ~ 6.1 WCDMA 1–2 ~ 0.2013 7 © 2013 Nokia Solutions and Networks .1 2–4 ~ 0. 2013 8 © 2013 Nokia Solutions and Networks .Benefits and Gains • Uplink scenario overview • Simulations for R99 UL • Downlink scenario overview • Simulations for single user HSDPA • Simulations for DC-HSDPA For internal use MBB CS Network Engineering / Bartosz Bieda / 06.03. 2013 9 © 2013 Nokia Solutions and Networks .03.Uplink scenario overview For internal use MBB CS Network Engineering / Bartosz Bieda / 06. the same area but GSM has higher power than WCDMA MS2 Filtering adjacent interferences rcell MS4 UEcell_edge MS3 UE Tx BW a 5MHz b Interferences Scenario description from GSM at 2. GSM channels that overlap with WCDMA can not be used by GSM carriers c (the signal has d • Buffer zone radius needs to be evaluated (it equals the distance between co.03.8MHz GSM and WCDMA 2. MS on the cell edge in the primary WCDMA cell 4) GSM out-of-band interference. been summed) channel WCDMA and GSM BTS which impact of interferences can be neglected) • Within the buffer zone adjacent GSM channels with carrier separation between BTS Rx BW 3. Uplink scenario overview Main Menu RAN2489 Carrier Bandwidth 3. in the WCDMA buffer zone rbuffer 3) GSM out-of-band interference.0MHz carrier spacing • In refarming for Uplink.2013 10 © 2013 Nokia Solutions and Networks .e MS4 and MS3) is in the same area attenuated For internal use MBB CS Network Engineering / Bartosz Bieda / 06.8 MHz GSM interference (vary on pathloss) WCDMA Possible Cases Primary MS1 1) GSM co-channel interferences.8MHz • MS’s can be located everywhere therefore the interferences changes dynamically UL WCDMA carrier interfered • Inside buffer zone. out of primary cell range. BTS Rx BW could be set to 3.0MHz and higher can be used interference from adjacent • Worst case scenario (4) is when the UE is at the cell edge and MS channels (i. out of WCDMA buffer zone 2) GSM out-of-band interference. 2 MHz 4.2MHz 2.2 MHz f[MHz] f[MHz] For internal use MBB CS Network Engineering / Bartosz Bieda / 06.8Mhz / 4.03.8Mhz / 4.8Mhz / 4.2013 11 © 2013 Nokia Solutions and Networks . Uplink possible cases Main Menu RAN2489 Carrier Bandwidth 3.8 MHz .2 MHz f[MHz] f[MHz] (3) GSM out-of-band interference. MS on the cell edge in the primary WCDMA cell (4) GSM out-of-band interference.4MHz fGSM BCCH WCDMA WCDMA 4.4MHz fGSM BCCH fGSM TCH 2. out of WCDMA buffer zone (2) GSM out-of-band interference.8Mhz / 4.2MHz 2. in the WCDMA buffer zone fGSM TCH 2.2 MHz 4.4MHz fGSM BCCH WCDMA WCDMA 4.some possible cases (1) GSM co-channel interferences. the same area but GSM has higher power than WCDMA fGSM TCH 2. out of primary cell range.2MHz 2. 03.2013 12 © 2013 Nokia Solutions and Networks .2MHz 2.4MHz fGSM BCCH fGSM TCH 2.8Mhz / 4.some possible cases WCDMA GSM interference (vary on pathloss) Primary (2) GSM out-of-band interference.8Mhz / 4. Uplink possible cases Main Menu RAN2489 Carrier Bandwidth 3. the same area but GSM has higher power than WCDMA fGSM TCH 2.4MHz fGSM BCCH WCDMA WCDMA 4.2MHz 2. out of primary cell range.2 MHz f[MHz] f[MHz] For internal use MBB CS Network Engineering / Bartosz Bieda / 06. MS on the cell edge in the primary WCDMA cell (4) GSM out-of-band interference.4MHz fGSM BCCH MS2 WCDMA rcell MS4 4.8 MHz .2 MHz UEcell_edge MS3 f[MHz] (3) GSM out-of-band interference.2 MHz 4.2MHz 2.8Mhz / 4. in the WCDMA buffer zone MS1 rbuffer fGSM TCH 2. 2013 14 © 2013 Nokia Solutions and Networks .Simulations for single user HSDPA WCDMA-GSM Refarming scenario For internal use MBB CS Network Engineering / Bartosz Bieda / 06.03. 6MHz filtering enables to use carrier spacing 4.6MHz allows better spectrum utilization comparing to 4. • 4. it causes CIR target increase in comparison to 4.03.8MHz • 4.8MHz cause CQI degradation to CQI27 and need to be investigated in details with different modulation scheme and robustness to obtain the best transmission parameters For internal use MBB CS Network Engineering / Bartosz Bieda / 06.2MHz • Carrier spacing less than 3.8 MHz Simulation case scenario Carrier spacing: WCDMA WCDMA fW fW interference rcell UE f[MHz] Conclusions based on HSDPA simulations • Tx filtering 4. However.2013 15 © 2013 Nokia Solutions and Networks .8MHz filtering.2MHz for high CQI values (even CQI30 with 64QAM modulation scheme) for DC-HSDPA.8MHz filtering will degrade 64QAM modulation scheme services with carrier spacing 4. Summary for HSDPA simulations Main Menu RAN2489 Carrier Bandwidth 3. 2013 16 © 2013 Nokia Solutions and Networks .03.Configuration Management Parameters For internal use MBB CS Network Engineering / Bartosz Bieda / 06. 0MHz (0). Only valid for RFs which support configurable Tx bandwidth 5.8MHz. Range and step 4. It allows the operator to narrow Tx Description Parameter group .Tx Bandwidth Tx Bandwidth (Parameter created due to CN5088) Abbreviated name txBandwidth MOC LCELW This parameter is used for setting optional TX BW level Data type Enumeration during commissioning.2013 17 © 2013 Nokia Solutions and Networks .6MHz. there are 4 valid values for TX BW: 5.6MHz.0MHz. For internal use MBB CS Network Engineering / Bartosz Bieda / 06.4MHz • This parameter impacts Downlink performance.8MHz (1). 4.8 MHz: Parameter .4MHz (3) Default value - Remarks: • In NetAct.6MHz (2). 4. bandwidth. 4.8MHz. 4. 4. 4. 4. Configuration Management Main Menu RAN2489 Carrier Bandwidth 3.4MHz • FXDA RFM supports: 4.03. 4.0MHz (0). Range and step 4. It allows operator to narrow Rx Description bandwidth.4MHz (3).8MHz • FXDA RFM supports: : 4.Rx Bandwidth Rx Bandwidth (Parameter created in RAN2489 and updated in CN5088) Abbreviated name rxBandwidth MOC LCELW Data type Enumeration This parameter is used for setting optional RX BW level Parameter group . there are 7 valid values for RX BW: 5. 4.2MHz. 4. during commissionig. 3. Configuration Management Main Menu RAN2489 Carrier Bandwidth 3. For internal use MBB CS Network Engineering / Bartosz Bieda / 06. 4.4MHz.6 MHz. 4.03.8MHz (1).2MHz.2MHz (4). 3.0MHz (5).0MHz. configurable Rx bandwdith 4.0MHz. 4.6MHz (2). 3.0MHz. 4. Parameter is valid for RF which support 5. 4.8 MHz: Parameter .2013 18 © 2013 Nokia Solutions and Networks .8MHz • This parameter impacts Uplink performance.8MHz (6) Default value - Remarks: • In NetAct.8MHz. 4. 2013 20 © 2013 Nokia Solutions and Networks .03.Deployment Aspects For internal use MBB CS Network Engineering / Bartosz Bieda / 06. 03.Network Design Impact For internal use MBB CS Network Engineering / Bartosz Bieda / 06.2013 23 © 2013 Nokia Solutions and Networks . which degrade performance • No impact on BTS load or operability • No impact on HW and SW architecture For internal use MBB CS Network Engineering / Bartosz Bieda / 06. which have small robustness.03.2013 24 © 2013 Nokia Solutions and Networks . usually suffer higher degradation level  Some services (with throughputs close to the theoretical maximum) are not feasible in the field. The narrower filter the bigger performance degradation  High speed services (high throughput services). Network design impact of RAN2489 Main Menu Network Design Impact: • Impact on coverage (the use of 900MHz band extends the WCDMA coverage) • Impact on capacity (may be increased) due to better spectrum utilization • Impact on network performance (may be decreased): – Narrower RX and TX filters cause performance degradation:  The degradation level depends on the filter type. when narrower filters are used – Carrier overlapping cause interferences. 03.2013 25 © 2013 Nokia Solutions and Networks .Summary For internal use MBB CS Network Engineering / Bartosz Bieda / 06. However.03. this prevents GSM from suffering from filter used interferences caused by WCDMA • To analyze the overall network performance. This is because the narrow filters limit the mutual interference between the carriers. the degradation is greater. field trials are required • Because of using narrow WCDMA DL filters. services would work. the GSM mobile station will see • We cannot modify UE filters. degradation is high for the UMTS users located at aggressive refarming.2013 26 © 2013 Nokia Solutions and Networks .0MHz) for UL R99 and heavy loaded GSM causes significant increase of Tx with configurable carrier spacing the Eb/No requirements.8MHz refarming solution (when WCDMA-GSM carrier spacing equals • RAN2489+CN5088 feature enables configurable carrier bandwidth for Rx and 2. GSM mobile station can then request carrier with a separation to the edge of his spectrum smaller than 2. • This solution increases flexibility when refarming WCDMA in 850MHz and • BCCH channels or fully loaded TCH channels without dynamic power control 900MHz bands are not recommended as an adjacent channel to WCDMA carrier • When the operator has a very limited portion of spectrum. less GSM power from the BTS.5MHz. Overall summary Main Menu Simulations Conclusions Main Conclusions • 3. if a operator decides to place a WCDMA less interference coming from WCDMA. However. So. Hence. the interference coming from GSM there can be violations of the guard band in the uplink seen by UMTS UEs is lowered • Performance degradation depends also on the service. he can apply • In the worst case scenario. For higher tput services. that may be a source of the performance the cell edge the performance. it is not possible to achieve the maximum theoretical throughput For internal use MBB CS Network Engineering / Bartosz Bieda / 06. however. degradation • Narrower filtering in DL for R99/HSDPA causes also increase of Eb/No and • The performance degradation depends on: carrier spacing and BW of the CIR requirements. • For DC-HSDPA the use of RAN2489 is a solution that greatly improves performance when there is any overlap. However. 2013 27 © 2013 Nokia Solutions and Networks .03.Thank you for your attention For internal use MBB CS Network Engineering / Bartosz Bieda / 06. 03.Backup For internal use MBB CS Network Engineering / Bartosz Bieda / 06.2013 28 © 2013 Nokia Solutions and Networks . 2013 29 © 2013 Nokia Solutions and Networks . Category I-HSPA Internet HSPA CIR Carrier to Interference Ratio KPI Key Performance Indicator CM Configuration Management L Pathloss CQI Channel Quality Indicator LL Link-Level DC Dual Carrier Max. Abbreviations used (1/3) 3GPP 3rd Generation Partnership Project DIR Dominant Interference power Ratio ASW Application Software DL Downlink AWGN Additive White Gaussian Noise Eb Bit Energy BCCH Broadcast Control Channel EbNo Bit Energy to Noise ratio BLER Block Error Rate f1st TCH Center freq.03. Maximum For internal use MBB CS Network Engineering / Bartosz Bieda / 06. of adjacent TCH channel BSW Basic Software fw Center frequency of WCDMA carrier BTS Base Transceiver Station HSPA High-Speed Packet Access BW Bandwidth HW Hardware Cat. 03. Release NetAct Nokia Siemens Networks NetAct™ RRC Root Rise Cosine No Noise RRC Radio Resource Control O&M Operation and Maintenance RU Release UMTS ONCS Orthogonal Noise Channel Simulator Rx Radio Receiver OSS Operations Support System SCH Synchronisation Channel PC Power Control SF Spreading Factor P-CCPCH Primary-Common Control Physical Channel SW Software P-CPICH Primary Common Pilot Channel SW Software PICH Page Indicator Channel TBS Transport Block Size PS Packet Service TCH Traffic Channel For internal use MBB CS Network Engineering / Bartosz Bieda / 06.2013 30 © 2013 Nokia Solutions and Networks . Abbreviations used (2/3) MS Mobile Subscriber QAM Quadrature Amplitude Modulation NB NodeB QPSK Quadrature Phase-Shift Keying NEI Network Engineering Info Rel. 2013 31 © 2013 Nokia Solutions and Networks . Abbreviations used (3/3) TDMA Time Division Multiple Access Tput Throughput TTI Transmission Time Interval Tx Radio Transmitter UE User Equipment UL Uplink WCDMA Wideband Code Division Multiple Access For internal use MBB CS Network Engineering / Bartosz Bieda / 06.03. gain18dBi  2.2013 32 © 2013 Nokia Solutions and Networks . gain 21dBi For internal use MBB CS Network Engineering / Bartosz Bieda / 06.65 U 2100coverage. gain 21dBi U 2100 coverage.00  1. Comparison of U2100 and U900 coverage simulation Main Menu HSUPA at cell edge BTS U2100 U900 Coverage: U 900coverage.03. gain 21dBi U 900coverage. 2013 33 © 2013 Nokia Solutions and Networks . gain 21dBi U 900coverage. gain 21dBi For internal use MBB CS Network Engineering / Bartosz Bieda / 06. gain18dBi  1.03.90  1. gain 21dBi U 2100 coverage. Comparison of U2100 and U900 coverage simulation Main Menu HSDPA at cell edge BTS U2100 U900 Coverage: U 900coverage.56 U 2100 coverage. gain18dBi  2. gain 21dBi U 2100 coverage.65 U 2100coverage. Comparison of U2100 and U900 coverage simulation Main Menu Rel99 UL at cell edge BTS U2100 U900 Coverage: U 900coverage.2013 34 © 2013 Nokia Solutions and Networks .01  1. gain 21dBi For internal use MBB CS Network Engineering / Bartosz Bieda / 06. gain 21dBi U 900coverage.03. Comparison of U2100 and U900 coverage simulation Main Menu Rel99 DL at cell edge BTS U2100 U900 Coverage: U 900coverage. gain 21dBi U 2100 coverage.03.2013 35 © 2013 Nokia Solutions and Networks . gain 21dBi U 900coverage. gain 21dBi For internal use MBB CS Network Engineering / Bartosz Bieda / 06.90  1.56 U 2100 coverage. gain18dBi  1. 2013 36 © 2013 Nokia Solutions and Networks .03. For internal use MBB CS Network Engineering / Bartosz Bieda / 06.
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