LTE – eNODE-B
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Flexi Multi Radio BTS LTE • Flexi Multi radio BTS with LTE software is a 3GPP LTE eNB macro BTS site • • • • • • • •
solution. Flexi Multi radio BTS introduces a new way to build BTS sites using modules, without a specific BTS cabinet. Due to its small weight and size, modular design and full frontal accessibility. Flexi architecture provides a smooth evolution from WCDMA/HSPA to LTE, without compromising performance or capacity. A Flexi Multi radio BTS consists of one Remote Radio Head (Or RF Module) per frequency band and one System Module with a transmission sub module. The same Multi radio modules are used in both WCDMA/HSPA and LTE indoor and outdoor sites. All modules can be accessed from the front, are outdoor weather protected and fresh air cooled. Flexi System Module with Transmission Module, 3-sector RF Module and Remote Radio Head are IP65-classified outdoor modules. Flexi Multiradio BTS LTE can also be mentioned as Flexi eNB.
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System Module • Flexi Multi radio BTS System Module hosts the telecom control, • • • • •
system operation and maintenance, baseband application, transmission, and power distribution functionality. The System Module can also act as a System Extension Module operating in a baseband extension mode (future software feature candidate). Flexi Multi radio System Module hardware supports the following software operating modes: WCDMA dedicated mode LTE dedicated mode It has multiband support, i.e. RF Modules for different frequency bands can be connected to the same System Module.
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System Module – Contd. • The System Module provides the following BTS external interfaces: • BTS Site Manager • transmission interfaces • four external interfaces towards RF • site support system interface (for example, battery back-up) • Auxiliarity interface (customer-specific Ethernet port with overvoltage protection) • Auxiliarity interface Ethernet for future expansions • external alarms and controls interface (customer-specific alarms) • external synchronization input interface • external synchronization output interface • baseband extension interface
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System Module – Contd.. • The System Module has an integrated BTS clock that distributes the
synchronization clocks to other BTS modules. • The System Module uses nominal -48 V DC and distributes it on to RF and System Extension Modules. The System Module includes integrated fans. • The System Module can be used, for example, for the following software functionalities: • BTS level O&M processing (BTSOM) • Resource management • Node B server • NBAP handler • User plane management
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Power requirements of the System Module • The power supply of the System Module is described in the tables below. The same power consumption figures also apply for the System Extension Module.
Input voltage of the System Module
Power consumption of the FSME (not including transmission) and FSME used as a System Extension Module * During cold start-up (module heating on, high load) ** Operational power consumption at room temperature *** Module in idle state, fans off, +0°C All above with nominal 48V voltage input.
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Power requirements of transmission sub-modules • The typical power consumption of the transmission sub-modules is described in the table below.
Power consumption of the transmission sub-modules
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LTE – Long Term Evolution • • • •
Contents • Introduction to the FlexiBTS architecture • FlexiBTS installation options • Description of TD-LTE FlexiBTS modules and sub-modules
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3GPP Rel 8 network architecture
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NSN TD-LTE Flexi BTS structure overview Flexi BTS introduces a new platform • The modular design doesn’t use any backplanes • Modules are interconnected through front panel cabling • Modules can be installed separate from each other (Feederless / Distributed Sites) A TD-LTE Flexi BTS consists of one System Module and • 1 optional Extension System Module up to three Remote Radio Heads or a Radio Module • Radio Module is available with 3 Power Amplifiers (PAs) – each PA contains one up to 20 MHz carrier • Remote Radio Heads are optimized for 1 sector with – 2 PAs with up to 20 MHz bandwidth BTS configurations • up to 1+1+1 with 20 MHz • Module weight: 19-25 kg per Module The Base Station can be installed by one person I insert classification level
Generic FlexiBTS Product Description
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Flexi BTS Build Up by Modules
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TD-LTE Flexi BTS Site (RF Module Solution) • System Module • Two 3-sector RF Modules for 3 sectors • 1+1+1 @ 3 x 120 W 2TX MIMO • Optional 4 way UL diversity • Optional TMA/MHAs
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Installation options: Pole installation of Remote Radio Heads (RRH) • Up to 3 RRH’s fit around one pair of FPKA pole mounting brackets.
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Installation options: Stack installation • BTS modules are placed in a stack (e.g. floor or shelves) • Outdoor & indoor installations • Modules in casings with back and front covers • Plinth needed (same plinth for all cabinet less installations – stack, pole and wall) • Max 22 Height Units (HU) per plinth for zone 2 earthquake zones, max 15 HU for zone 4 earthquake zones
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Installation options: Wall installation • BTS modules installed on a wall • Outdoor & indoor installations • Modules in casings with back and front covers • Plinth needed • Up to 2 modules per plinth • Modules installed covers sideways • 100 mm space recommended between plinths to enable cabling (see picture) • Standard Flexi BTS clearances apply
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Installation options: Pole installation of Modules BTS modules installed on a pole • Outdoor & indoor installations • Modules in casings with back and front covers • Plinth and pole mounting bracket needed • Up to 2 modules per plinth and 4 per pair of brackets • Modules installed covers sideways • Standard Flexi clearances apply
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Installation options: Flexi Cabinet installation Cabinet can simultaneously house LTE, GSM/EDGE, LTE/HSPA and BBU modules • There are no limitations on how to mix LTE, GSM and WCDMA in one cabinet Optional Flexi Cabinets for indoor and outdoor installations • Open 19” mechanics with 1 HU fixing steps for flexible module installations • No motherboards or electronics (fans etc) • Not part of EMC shielding • Only front cabling • Module casings and covers are not used • Cooling fans remain in modules • Modules are grounded via rack • Same footprint and cabinet fixing points as with UltraSite and Talk Family • Outdoor: 1550 x 770 x 770 (H x W x D), space for 38HU • Indoor: 1800 x 600 x 600 (H x W x D), space for 36HU I insert classification level
NSN Flexi LTE BTS Modules
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NSN Flexi BTS System Module The Flexi System Module hosts the • telecom control • system operation and maintenance • baseband application • transmission • power distribution functionality. The following versions of the System Module are available: Multi-Mode System Module versions supporting LTE (TDD/FDD) and WCDMA operation: • Multimode System Module FSMD • Multimode System Module FSME
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Flexi Multimode System Module FSME
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Flexi Multimode System Module (FSME)
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Exploded view of System Module delivery items
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FSMC/D/E SYSTEM MODULE INTERFACES 1/2
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SYSTEM MODULE INTERFACES 2/2
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FSMD/E Functional Block
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FCMD Functionalities • FCMD -- Flexi Control and Multiplexing Sub-Assembly, version D • Takes care of controlling of System Module O&M features for FTM and FSPCs – intelligence temperature control, – clock distribution to the BTS – baseband- and RF-synchronization – power distribution • Platform for user plane resource manager, optical interfaces to/from another modules and summing & multiplexing for baseband pooling
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FSPC Functionalities • FSPC – Flexi Signal Processor, version C • User plane signal processing including L1 and part of L2 • Frame protocol termination • Radio link signalling • Local O&M • Boot SW download fail recovery
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FSPC Functional Block
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Power Distribution and Fuses module (FPFB)
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FPFB Interfaces
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FPFB functionality • The FPFB does not have any circuit breakers but instead electrical fuses and a dedicated power switch for the System Module. • There are five membrane switches on the FPFB front panel for the outputs. The switches control power control circuits and have two states: On and Stand-by. • This allows to individually connect or disconnect the power supply from each of the max 5 modules: • System Module • RF Module / RRH 1 • RF Module / RRH 2 • RF Module / RRH 3 • Extension System Module • The fuse rates for the FPFB are RF1-3 31.0A (+/-2A), EXT 25.0A (+/- 4.5A)
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Flexi System Module + Transport sub-module
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FTLB - PDH / Ethernet •LTE - is ready for LTE by software upgrade • Interfaces • 2 x electrical Gigabit Ethernet, RJ45 (10/100/1000Base-T) • 1 x optical Gigabit Ethernet, via optional SFP (e.g. for 1000Base-SX/LX) • 4 x E1/T1/JT1 symmetrical, RJ48 (coaxial E1 supported via baluns) •Data throughput • 2 Gbit/s UL+DL Connector types • E1: 1 x RJ 48 per IF • Ethernet: RJ 45 •opt. Ethernet: SFP with LC connector
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FTIB - PDH / Ethernet • LTE - is ready for LTE by software upgrade • Interfaces • 2 x electrical Gigabit Ethernet, RJ45 (10/100/1000Base-T) • 1 x optical Gigabit Ethernet, via optional SFP (e.g. for 1000Base-SX/LX) • 4 x E1/T1/JT1 symmetrical, RJ48 (coaxial E1 supported via baluns) Data throughput • 160 Mbit/s UL +DL Connector types • E1: 1 x RJ 48 per IF • Ethernet: RJ 45 • opt. Ethernet: SFP with LC connector
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Remote Radio Head
AXIS FZNB/FZHB
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Remote Radio Head Functional Blocks (FZNB/FZHB)
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MIMO Remote Radio Head (20 W+20 W)
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Remote Radio Head Interfaces (FZNB/FZHB)
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Several kinds of RRH/RF module used in TD-LTE
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Flexi 3-Sector RF Module
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Flexi Power Module FPMA Example configuration with: 1 x Flexi Power Module FPMA • 3 Flexi Power AC/DC sub-modules FPAA (230VAC -> 48VDC) • 1 Flexi Power Battery FPBA
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Flexi Power Module FPRA • High power alternative to FPMA • Up to 3 rectifiers • Output power 2 kW per rectifier, 6 kW total DC output power • External batteries supported
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Flexi Power DC/DC Module (FPDA) • Converts nominal 24 V DC input voltage 53-55 V DC output voltage • A maximum of two FPDA modules can be connected in parallel • Integrated self-controlled fan • Maximum DC output power is 2 kw
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GPS for Flexi eNB (FYGA)
Trimble Acutime Gold: GPS antenna with inbuilt receiver • Available with Flexi LTE BTS, Flexi WCDMA BTS, Flexi I-HSPA BTS
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Flexi mounting kit for floor, wall and pole (FMFA)
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Flexi External Alarm Box (FSEB)
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