SRAN radio planning and dimensioning topics [SRAN16.2] SRAN on baseband dimensioning Section Objectives • At the end of this section you will be able to: - perform baseband dimensioning in SRAN deployments Section Content • Impact of SRAN on baseband dimensioning - How baseband dimensioning is affected by SRAN configurations SRAN products and architecture What is SBTS? - SRAN16.2 release introduce a new Single RAN BTS. - SBTS is a Flexi Multiradio 10 Base Station that has new operability and SW architecture that enables: 1. SBTS System Module Sharing with shared RF fibers 2. New OAM Architecture and SBTS common OAM 3. SBTS Common Transport - The system module type required is FSMF i.e. HW release 3 of System Module (FSMr3) RF RF RF GSM WCDMA TRS TRS backhaul OAM LTE System Module Netact SRAN products and architecture Nokia Single RAN is designed to meet the operator needs for Multiple RATs Supporting multiple Radio Access Technologies with common or shared functionalities GSM WCDMA LTE TD-LTE HW sharing Common Operability Common Transport Features for improving the Single RAN network performance Nokia SRAN : key elements RF Multiradio capable HW > BTS RF, BTS baseband, Controllers > Enabling flexibility in reconfigurations and resource utilization between RATs Single RAN SW > SRAN SW product incl. Single RAN features and RAT features Value adding functionalities > > > > Spectrum refarming RAN sharing between CSPs Traffic steering Services GSM RF S B T S RF WCDMA LTE BTS baseband TRS GSM WCDMA Controllers OSS SRAN products and architecture SRAN release is a new SW product including new SBTS software GSM - no change Dedicated GSM EX / GF SRAN – new product SRAN ** WCDMA - no change FDD-LTE - no change TD-LTE - no change Dedicated WCDMA Dedicated FDD LTE Dedicated TD LTE SBTS WBTS FL TL WCDMA application FDD LTE application TD LTE application GSM application GSM application WCDMA application FDD LTE application GSM BTS O&M Common O&M WCDMA BTS O&M LTE BTS O&M LTE BTS O&M GSM transport Common Transport WCDMA Transport LTE BTS Transport LTE BTS Transport BSC / mcBSC BSC/mcBSC* BSC / mcBSC BSC3i RNC / mcRNCRNC/mcRNC*RNC / mcRNC (1000/200) OMS OMS* OMS LTE iOMS* iOMS *) RNC OMS, BSC/mcBSC / BSC3i (1000/2000)and RNC/mcRNC instances are re-used as such in SRAN without any change. LTE iOMS is not needed **) SRAN 16.2 targets feature parity with parallel RAT releases, i.e. GSM 16, WCDMA 16 and LTE-FDD 16 SRAN products and architecture SBTS brings a fundamental change to Flexi MR 10 BTS Software Architecture RF GSM BB TRS RF RF OAM WCDMA BB TRS OAM RF RF LTE BB GSM TRS RF WCDMA OAM TRS TRS backhaul GSM OSS WCDMA Site with traditional approach • RF Unit sharing • Dedicated System Modules for RATs • Dedicated RF fibers per RAT • Shared transport backhaul LTE TRS backhaul OAM LTE System Module OSS Site with Single RAN solution New operability and SW architecture enables • Common BTS OAM • System Module sharing with shared RF fibers • Common Transport SRAN products and architecture SRAN 16.2 Highlights New SBTS Software Common BTS OAM One base station for GSM, WCDMA and LTE radio technologies Common handling in Netact, Simplified site creation, commissioning and config. Based on Flexi Multiradio 10 Base Station System Module Supporting single radio all radio- and TRS SW upgrades Common backhaul IP transport System module sharing One IP host and interface Extremely compact sites One IP address and IP security Lower energy consumption No external IP transport boxes Scalable capacity SRAN products and architecture SRAN OAM architecture Support for enhanced pre-integration and off-line validation NetAct NE3S Web UI Web UI Element Management Tool SBTS OAM NetAct NE3S SBTS SBTS OAM Architectural improvements • Common BTS OAM • Flat O&M architecture, no OMS • Decoupling of O&M and RAT SW • Web UI based common SBTS Element Manager • Adding supported BTS configurations without dependency to SBTS SW LTE TRS BTS WCDMA GSM BTS Platform SW SRAN products and architecture SRAN comes with consolidated NetAct Note: NetAct supports multi-RAT already NetAct NetAct NetAct NetAct OSS OSS LTE WCDMA WCDMA GSM GSM LTE SRAN network Including RNC and BSC • NetAct setup with single RAT networks can be fragmented between RATs • SRAN network is operated with one NetAct per area • Complete network view in management system SRAN products and architecture Web UI for BTS element management Web UI • Web UI replaces BTS Site Manager for SBTS • Can be used both locally and remotely • Works with a standard Web browser http • No need to install additional SW on the client side • New tool with modern user interface and high usability SBTS OAM • One element manager for SBTS LTE TRS SBTS WCDMA GSM BTS Platform SW SRAN baseband Before & after Before - Classical RF sharing SRAN introduced (SBTS 16) RF sharing RF sharing 900 900 RF sharing GSM LTE System Module System Module GSM WCDMA System Module System Module Common System Module (LTE + WCDMA + GSM) 900 1800 One common System Module supporting up to 3 RATs and dedicated / shared RF modules GSM WCDMA System Module System Module LTE System Module Each RAT requires dedicated System Module SRAN baseband SBTS 16 - Flexi Multiradio 10 Base Station SRAN 16 LTE System Module System Module sharing + WCDMA System Module + GSM System Module FSMF System Module (plus optional capacity extension FBBA/C cards) Common O&M Up to 3 RATs sharing FSMF System Module. BB capacity statically distributed among RATs Note: FSMF and future HW is foreseen to support Single RAN SW Common Transport SRAN baseband Flexi Multiradio 10 System Module (SM) – Product highlights Flexi Multiradio 10 BTS Easy capacity expansion Integrated common transport FSMF System Module Add-in submodules Common (LTE/WCDMA/LTE) transport Share FBBA/C card LTE/GSM WCDMA/GSM LTE/WCDMA LTE/GSM/WCDMA Optional submodule expanding SBTS BB capacity IP/Eth backhaul SRAN baseband SBTS 16/16.2 - Flexi BTS System Module SBTS 16.2 planned support: SBTS LTE: WCDMA: GSM: - FSMF - FSMF - FSMF - FBBA* - FBBC - FBBA - FBBC System Module rel.3 FSMF + FBBA/C and future HW Note: WBTS supports FSMF and FBBA cards only SBTS 16 PT supports FSMF and FBBC cards * FBBA support for LTE planned (16.2) / please confirm with SRAN PMs before communicating to customer SRAN baseband FBBA/C bb capacity = 6 subunits FBBC usage in WCDMA FSMF + 2x FBBA • 6 x OBSAI interface for Radio Modules FSMF + 2x FBBC • 8 x OBSAI interface for Radio Modules • 1 x OBSAI cable needed between FSMF and each FBBC FBBA and FBBC have exactly same baseband capacity i.e. 6 subunits for traffic use • FBBC has 4 x OBSAI ports for Radio Modules in front panel, compared to 1 x OBSAI port in FBBA • For WCDMA 1 x OBSAI cable would be needed between FSMF and FBBC if more than one dedicated WCDMA RF units connected to FBBC each FBBC adds only one OBSAI port more in configuration compared to FBBA • RF connectivity need comes in multi-RAT sites and RF sharing cases which are typical SRAN cases FBBC will be supported in WCDMA in SRAN 16. Both in WCDMA dedicated mode and in Multi-RAT mode SRAN baseband SBTS baseband resources sharing How SBTS baseband resources are shared between RATs ? SRAN baseband SBTS baseband resources sharing SBTS supported RAT combinations: 1 RAT: 2 RATs: 3 RATs: - GSM - GSM + WCDMA - GSM + WCDMA + LTE - WCDMA - LTE - GSM + LTE - WCDMA + LTE System Module sharing combinations SRAN baseband SBTS baseband resources sharing • BTS baseband capacity allocation between activated RATs is statically assign with FSMF or FBBA/C card granularity, with one exception mentioned below: • - FSMF baseband capacity can be shared between: • GSM and LTE • GSM and WCDMA Note: In System Module sharing mode GSM is always allocated at FSMF (not FBBA/C card) GSM • GSM WCDMA Additional baseband resources for WCDMA or LTE can be allocated with FBBA/C cards. GSM WCDMA • LTE (RCS conf) WCDMA GSM WCDMA WCDMA WCDMA FSMF or FBBC card baseband capacity cannot be shared between LTE and WCDMA . WCDMA LTE WCDMA SRAN baseband GSM SBTS baseband resources sharing WCDMA • GSM and WCDMA System Module sharing mode • Depending on available FBBA/C cards SBTS provides the following baseband resources for WCDMA RAT. SBTS GSM WCDMA subunits 24 TRX 3,5 su 24 TRX 9,5 su FSMF GSM WCDMA GSM WCDMA FSMF + FBBA/C WCDMA FSMF + 2x FBBA/C 24 TRX 15,5 su GSM WCDMA WCDMA WCDMA SRAN baseband LTE SBTS baseband resources sharing There are three LTE baseband SW allocation types, depending on LTE radio configuration (supported bandwidth / # cells / features): • Reduced Cell Set (RCS) • Basic Cell Set (BCS) • Extended Cell Set (ECS) Each configuration affects BB allocation (-> amount of FSMF/FBBC cards) Reduced cell set (RCS) Basic cell set (BCS) Extended cell set (ECS) • • up to 6x10MHz LTE 2x2 MIMO • up to 3x10MHz LTE 4TX/4RX • up to 3x20MHz LTE 2x2 MIMO 4TX/4RX = 4x2MIMO, 4x4MIMO or/and 4RX diversity mode • • up to 3x10MHz LTE 2x2 MIMO with CoMP in FSMF up to 4x10MHz LTE 2x2 MIMO without CoMP in FSMF Allows to allocate LTE and GSM (up to 24 TRXs) in same FSMF FSMF core baseband capacity shared between LTE and GSM Requires whole FSMF or FBBC card for LTE processing 3x20MHz LTE with 4TX/4RX capability Extended cell set between 2 FBBCs is not supported. Requires whole FSMF and 1x FBBC card for LTE processing SRAN baseband LTE SBTS baseband resources sharing Reduced cell set (RCS) • up to 3x10MHz LTE 2x2 MIMO with CoMP in FSMF up to 4x10MHz LTE 2x2 MIMO without CoMP in FSMF • LTE + GSM (up to 24 TRXs) GSM FSMF Basic cell set (BCS) • • • up to 6x10MHz LTE 2x2 MIMO up to 3x10MHz LTE 4TX/4RX up to 3x20MHz LTE 2x2 MIMO LTE allocation in FSMF or FBBC card or FSMF FBBC 4TX/4RX = 4x2MIMO, 4x4MIMO or/and 4RX diversity mode Extended cell set (ECS) • 3x20MHz LTE with 4TX/4RX capability Extended cell set between 2 FBBCs is not supported. FSMF + FBBC LTE allocation in FSMF and FBBC card Note that different LTE SW allocation are possible in single BTS (e.g. 2x BCS or RCS + BCS) assuming suitable HW capacity SRAN baseband LTE SBTS baseband resources sharing WCDMA LTE + WCDMA sharing case requires at least one FBBA*/C card. Basic cell set (BCS) WCDMA LTE WCDMA: 5,5 subunits LTE: Basic cell set configuration • up to 6x10MHz LTE 2x2 MIMO • up to 3x10MHz LTE 4TX/4RX • up to 3x20MHz LTE 2x2 MIMO 4TX/4RX = 4x2MIMO, 4x4MIMO or/and 4RX diversity mode WCDMA: 11,5 subunits LTE: Basic cell set configuration Extended cell set (ECS) FSMF + FBBC WCDMA WCDMA LTE FSMF + 2x FBBC WCDMA LTE LTE • 3x20MHz LTE with 4TX/4RX capability Extended cell set between 2 FBBCs is not supported. WCDMA: 5,5 subunits LTE: 2x Basic cell set configuration FSMF + 2x FBBC Exemplary configurations SRAN baseband GSM SBTS baseband resources sharing LTE GSM + LTE sharing case requires in minimum FSMF baseband capacity LTE (RCS conf) GSM GSM: Up to 24 TRX LTE: Reduced cell set configuration FSMF GSM LTE(RCS conf) GSM: Up to 24 TRX LTE: Reduced cell set configuration + Basic cell set configuration FSMF + FBBC LTE • • LTE GSM Reduced cell set (RCS) WCDMA LTE WCDMA: 5,5 subunits LTE: 2x Basic cell set configuration Exemplary configurations up to 3x10MHz LTE 2x2 MIMO with CoMP in FSMF up to 4x10MHz LTE 2x2 MIMO without CoMP in FSMF SRAN baseband GSM SBTS baseband resources sharing LTE GSM + LTE sharing case requires in minimum FSMF baseband capacity GSM WCDMA WCDMA LTE GSM: Up to 24 TRX LTE: Basic cell set configuration WCDMA: 11.5 subunits FSMF + 2x FBBC GSM LTE LTE (RCS conf) WCDMA FSMF + FBBC LTE (RCS conf) WCDMA WCDMA GSM FSMF + 2x FBBC WCDMA Reduced cell set (RCS) • • GSM: Up to 24 TRX LTE: Reduced cell set configuration + Basic cell set WCDMA: 5,5 subunits GSM: Up to 24 TRX LTE: Reduced cell set configuration WCDMA: 11.5 subunits Exemplary configurations up to 3x10MHz LTE 2x2 MIMO with CoMP in FSMF up to 4x10MHz LTE 2x2 MIMO without CoMP in FSMF Basic cell set (BCS) • up to 6x10MHz LTE 2x2 MIMO • up to 3x10MHz LTE 4TX/4RX • up to 3x20MHz LTE 2x2 MIMO 4TX/4RX = 4x2MIMO, 4x4MIMO or/and 4RX diversity mode SRAN baseband SBTS baseband resources sharing - Summary • System Module sharing functionality allows to share single BTS baseband resources between different RATs (i.e. GSM / WCDMA / LTE). • SBTS supports also single RAT scenarios. • RAT baseband dimensioning rules remain unchanged as such. • SBTS supported configuration can be found in the following excel file describing SBTS profiles.
