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1.1.2 Working order for 1W TRX power upgrade 10 Capacity upgrade by BTS chaining 11 1.2.1 Working order for a MetroSite EDGE BTS chaining upgrade 11 Preparing for upgrade 13 Power supply precautions 13 Checking warnings and cautions 14 Checking the upgrade deliveries 15 2.3.1...
List of tables Table 1. Power supply rules during BTS upgrade or maintenance procedures Table 2. Parts required for a GSM/EDGE upgrade on the Nokia MetroSite EDGE Base Station Table 3. Tools and other equipment required for a field upgrade Table 4.
TRX slot order 32 Figure 10. Example of blocking a TRX in Nokia BTS Manager 33 Figure 11. Nokia MetroSite EDGE Base Station 5W GSM/EDGE TRX unit 36 Figure 12. Chaining connection for three Nokia MetroSite EDGE base stations 39 Figure 13.
With the 5W GSM/EDGE TRXs, MetroSite can operate with either GSM or EDGE transmission. If the MetroSite BTS still contains 1W TRXs, a higher capacity cooling fan and a different power supply unit must also be fitted to the BTS when the TRXs are upgraded to 5W GSM/EDGE TRXs.
Capacity upgrade by BTS chaining The capacity of a Nokia MetroSite BTS installation can be upgraded by connecting one or two slave BTSs to the master BTS with chaining cables via the interface units. Up to 12 TRXs can be connected and set up as one BCF unit. Only the master BTS needs a transmission unit.
2.3.1 Parts required for a GSM/EDGE upgrade Refer to Table 2 for details of the parts required for a GSM/EDGE upgrade. Table 2. Parts required for a GSM/EDGE upgrade on the Nokia MetroSite EDGE Base Station Upgrade type Parts required 5W GSM to 5W GSM/EDGE upgrade •...
TRXs but without transmission units (depending on the number of slave BTS cabinets planned). Note The BTS cabinets will need to be installed as described in the document, Nokia MetroSite EDGE Base Station: Installation. The parts required for BTS installation are listed in that document.
Tools and other equipment required for a ﬁeld upgrade Part Notes Laptop PC The PC should be compatible with Nokia SiteWizard software version 3.0. LMP cable For connecting BTS Manager software to the BTS via the LMP port on the interface unit Torque driver with 60 mm (2.4 in) shaft...
ESD protection Caution Some units in the MetroSite BTS contain electro-static sensitive devices. The BTS is labelled with an electro-static sensitive device symbol as shown in Figure Always use an anti-static wrist strap connected to the cabinet ESD stud, whenever handling electro-static sensitive units.
Replacing the power supply unit Replacing the power supply unit The power supply unit (PSU) must be replaced only if the MetroSite BTS installation is being upgraded from a 1W TRX configuration. See Table 4 for the correct type of PSU replacements for a 5W TRX installation.
Replacing the cooling fan Replacing the cooling fan The cooling fan assembly must be replaced only if the MetroSite BTS installation is being upgraded from a 1W TRX configuration. The VMFA fan type fan must be replaced by an HVMF type, high capacity cooling fan.
Replacing or installing new TRX units Block the TRX using Nokia BTS Manager (if the sector is not already locked from the BSC). In the Supervision - Equipment View window, right click on the TRX image and select the BLOCK button in the Object Properties dialogue window (see Figure 10).
Figure 9). The master TRX is located in slot 1. Note If you are replacing a master TRX in a single TRX installation or increasing the number of TRXs, refer to Nokia MetroSite EDGE Base Station: Maintenance for more detailed information. Installing TRX units Slide the unit into the appropriate slot.
TRX test from the BSC/NMS. Upgrading capacity by adding TRXs The capacity of a single MetroSite EDGE BTS can be expanded to include up to four TRXs. For information on coverage patterns and sectoring, refer to Nokia MetroSite EDGE Base Station: Product Description.
Chaining Nokia MetroSite EDGE BTSs Chaining Nokia MetroSite EDGE BTSs One or two Nokia MetroSite EDGE BTS cabinets can be added as slave cabinets to a master BTS, increasing the capacity to anything between five and 12 TRXs in one BCF object.
Connecting MetroSite BTSs in a chain Refer to your upgrade/installation plan and install the extra BTS cabinets as required. See the documents Nokia MetroSite EDGE Base Station: Requirements for Installation and Operation and Nokia MetroSite EDGE Base Station: Installation for instructions.
Note To ensure that you have access to the correct software versions for the upgrade, Nokia SiteWizard version 3.0 or later should be loaded on the laptop being used for commissioning. Note A Nokia MetroSite BTS installation fitted with 5W GSM/EDGE TRXs can be commissioned for GSM transmission, EDGE transmission, or a combination of both.
Commissioning the BTS chain The chain of Nokia MetroSite EDGE base stations will be commissioned as one BCF object, with TRX 1 in the master BTS performing the BCF traffic functions for the chain. Otherwise, the master TRX in each cabinet controls only the heating/cooling and alarm functions.
BTS chain. Carry out the commissioning process with BTS Manager’s Commissioning Wizard, as described in the document Nokia MetroSite EDGE Base Station: Commissioning. At the stage of traffic allocation, follow the instructions called Allocating transmission capacity for chaining in the Traffic Manager chapter of the document.
Refit the cabinet cover as follows (see also Figure 14): Note If the Nokia MetroSite BTS installation was upgraded from 1W TRXs to 5W TRXs, a new cover is required (HVCU type). Attach the safety strap to the fixing point on the top of the cabinet.
Field Upgrade Recycle any applicable material. Note In case you need to dispose of replaced units, contact Nokia Professional Services for information on recycling. An environmental data package, including disassembly instructions and a material balance document is also available via Nokia Professional Services.