The document discusses Nokia-Siemens Networks, which merged in 2006 and has headquarters in Finland. It provides mobile network services to over 1 billion subscribers through its networks in 150+ countries. The document then describes the base station subsystem (BSS) and its components, including the base transceiver station (BTS), base station controller (BSC), and network switching subsystem (NSS). It provides details on BTS components, transmission units, and tasks performed by the RF team like site surveys, loop breaks, flexi site installations, and intelligent BTS shutdowns.

1. Base Station Subsystem Prepared By: Bhavin Halani Internal Guide: External Guide: Prof. C. R. Parekh Mr. Nilesh Bansal

2. Nokia-Siemens Networks Announcement of merging on June 19, 2006 full operations on 1 April 2007 has its headquarters in Espoo , Greater Helsinki , Finland has operations in some 150 countries and has about 60,000 employees. Its major manufacturing sites are in China, Finland, Germany and India. About 1 billion people are connected through its networks. Second largest Provide services to Vodafone & Airtel

3. BSS:- BASE STATION SUBSYSTEM RF DEPARTMENT:- RF PLANNING RF OPTIMIZATION NSS:- NETWORK SWTCHING SUBSYSTEM OMC:- OPERATION & MAINTANANCE UNIT GPRS:- GENERAL PACKET RADIO SERVICE PROJECT UNIT TRANSMISSION Department in Nokia-Siemens Networks

4. GSM Network Architecture BTS 3 BTS 2 BTS 1 BSC PSTN N/W HLR VLR AUC EIR SMSC VMSC MSC OMC NSS BSS

5. Channelization FDMA ( F requency D ivision M ultiple A ccess) TDMA ( T ime D ivision M ultiple A ccess) CDMA ( C ode D ivision M ultiple A ccess) Frequency Division Duplex (FDD) Time Division Duplex Frequency Time Power Frequency Time Power F1 F2 Frequency Time Tx Rx F1 Frequency Time Tx Rx

6. Channels LOGICAL CHANNELS COMMON CHANNELS DEDICATED CHANNELS BROADCAST CHANNELS FCCH SCH BCCH COMMON CONTROL CHANNELS PCH RACH AGCH SDCCH SACCH FACCH DEDICATED CONTROL CHANNELS TCH/F TCH/H TRAFFIC CHANNELS TCH/EFR

7. Nokia MetroSite GSM BTS

8. Feature of Metrosite BTS used in GSM 900, GSM 1800, GSM 1900 systems accommodates up to four transceiver units (TRXs) frequency hopping fast and easy to install wall and pole installations are supported maximum number of TRXs in one sector is four

9. TRXs in 1 sector single band configuration (1+1)/(1+1) Dual Band configuration 2+2 Dual band configuration Examples of transmission connections

10. Nokia Ultrasite units

11. Base Operation Interface Card Base Band Interface Card Trance receiver (TRX) Duplexer (DVJA) Wide Band Combiner (WCGA) Multicoupler Power Supply (PWSB) Radio Relay Interface Card Different parts of BTS

12. Uplink Path GSM antenna | Dual Variable Gain Duplex Filter (DVxx) unit | Multicoupler (M2xx and M6xx) | TRx(transceiver) | BB2F Card for DSP | Transmission (VXxx) unit | To BSC through Microwave Antenna

13. Downlink Path From BSC through Microwave Antenna | Transmission unit(VXxx) | BB2F Card for DSP | TRX (Tranceiver) | Wideband Combiner unit (WCxx) | Duplexer | GSM antenna, which passes the signal through the Air interface to the MS

15. Transmission Unit MW Antenna Outdoor Unit GSM Antenna

16. MW Antenna & ODU Size : 0.6, 1.2, 1.8, 2.4 m High and low Vodafone notification In 1 MW link, 1 ODU is high and another is low Power -40W Polarization Frequency Bands : 13, 15, 18, 23, 26, and 38 GHz Transmission capacity : 2 x 2, 4 x 2, 8 x 2, or 16 x 2 Mbit/s.

17. Tilting: Mechanical Electrical Notification describe degree of electrical tilt 1 antenna uses max. 4 TRX GSM Antenna

18. Task 1 : Quality work Site Analyzer RF cable, Jumpers, connectors Measures in 1 to 7 RL and SWR 1--> 2 due to water in connector Faulty jumpers Connector bending

19. Task 2 : Loop break Metro hub Reason- Power level -77dbm in Dhandhuka-Khasta link Change ODU Alignment of MW antenna Check Feedon Level improve : -77dbm to -44dbm

20. Task 3 : Loop Spilt LOOPING ADVANTAGE METROHUB AND BTS

21. DEVLIYA (AITEL MEDIA) FROM RANPUR MITHAPUR SHIYAL KALYANGADH KELIYA VASNA CHANGODAR BADRKHA SARODA DHOLKA NAVAPURA GTL VISHALPUR PALDI KANKAJ PIRANA TOWN MIROLI CHANGODAR BCL CHALODA AMBLIYARA KALI KUNJ DOLKA BC CADILA FARMA MORRAIYA CADILA IBS CLARIS CADILA BHAT KERLA GIDC CHANDISAR RAJODA CHANGO BCL 2 BAVLA BAGODRA MANKOL RETHAL NANODRA KESARNDI BA113 NEW LOOP DHOLKANEW TRASAD MAHIJDA PISAVADA VAUTHA SALJADA SHARKEJ BALAVA RD E 1 SENT TO IDEA FROM MODASAR DHOLKA BCL CHANGODAR IDEA JUWAL BHAT (GTL) DHANDHUKA LIMDI OFC AND NEC TOWARDS BHAVNAGAR BAVLIYARI HEBAT IDEA NAVDA PATNA LAKHNI JAMRALA BARVALA RANPUR JALILA BHIMNATH ALAU SUNDARIYAN ALAMPUR UMRALA KUNDALI DHARPIPLA TAGDI MOTIVAVD I ROJID ADRODA CHIYADA DURGI ASLLALI TARAPUR TOWARDS KHEDA GALPH PIPLI MOTIBARU VATAMAN GUNDI FEDRA PANCHAM DHOLERA DHADIYAD ARNE J GANGAD VALTHERA SIMAJ AMBARELI KOTH KANPARA BAJARDA ADVAL PADANA ROJKA AKRU SODHI DHANDHU CITY RUPAN CHANDRIYANA KHASTA JHAKHDA SARGVALA SHAHIJ SHANTHAL VAJIFA KASHIDRA

22. DEVLIYA (AITEL MEDIA) FROM RANPUR MITHAPUR SHIYAL KALYANGADH KELIYA VASNA CHANGODAR BADRKHA SARODA DHOLKA NAVAPURA GTL VISHALPUR PALDI KANKAJ PIRANA TOWN MIROLI CHANGODAR BCL CHALODA AMBLIYARA KALI KUNJ DOLKA BC CADILA FARMA MORRAIYA CADILA IBS CLARIS CADILA BHAT KERLA GIDC CHANDISAR RAJODA CHANGO BCL 2 BAVLA BAGODRA MANKOL RETHAL NANODRA KESARNDI BA113 NEW LOOP DHOLKANEW TRASAD MAHIJDA PISAVADA VAUTHA SALJADA SHARKEJ BALAVA RD E 1 SENT TO IDEA FROM MODASAR DHOLKA BCL CHANGODAR IDEA JUWAL BHAT (GTL) DHANDHUKA LIMDI OFC AND NEC TOWARDS BHAVNAGAR BAVLIYARI HEBAT IDEA NAVDA PATNA LAKHNI JAMRALA BARVALA JALILA SUNDARIYAN KUNDLI RANPUR SNBURGUPUR MOTIVAVDI BHIMNATH ROJID ADRODA CHIYADA DURGI ASLLALI TARAPUR TOWARDS KHEDA GALPH PIPLI MOTIBARU VATAMAN GUNDI FEDRA PANCHAM DHOLERA DHADIYAD ARNE J GANGAD VALTHERA SIMAJ AMBARELI KOTH KANPARA BAJARDA ADVAL PADANA ROJKA AKRU SODHI DHANDHU CITY RUPAN CHANDRIYANA KHASTA JHAKHDA SARGVALA SHAHIJ SHANTHAL VAJIFA KASHIDRA TAGDI ALAU khas alampur DHARPIPLA UMARALA BHANGATH GHODASU

23. Task 4 : Flexi Site Installation Project team Enough space for new site Connection of BTS Connection of MW and RF Antenna Commissioning of BTS Update call

24. Task 5 : Intelligent BTS Shutdown Night Planwork Power cut Alarm setting Transmission continues

25. OTHER TASKS Preventive Maintenance Tilting of GSM Antenna Alignment of MW Antenna Replacement of ODU Traffic Management Antenna Dismantling

26. Thanks for your Attention. Have a nice day.