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Bhrat sanchar nigam limited Industrial Training PPT

Bharat Sanchar Nigam Limited (BSNL) is a state-owned Indian telecommunications company founded in 2000, primarily providing fixed telephony and broadband services. The document outlines the components of the telecommunications infrastructure, including Base Station Controllers (BSC), Base Transceiver Stations (BTS), and Mobile Switching Centers (MSC), detailing their functions and equipment. Additionally, it describes the various parts and operational principles of BTS, including power management, signal processing, and antenna systems.

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BSNL • Bharat Sanchar Nigam Limited (abbreviated BSNL) is an Indian state-owned telecommunications company headquartered in New Delhi. It was incorporated on 15 September 2000 and took over the business of providing of telecom services and network management from the erstwhile Central Government Departments of Telecom Services (DTS) and Telecom Operations (DTO). • with effect from 1 October 2000 on a going concern basis. It is the largest provider of fixed telephony and broadband services with more than 60% market share and Fifth largest mobile telephony provider in India.
OVERVIEW OF COMPONENTS
BSC • The Base Station Controller (BSC) controls and supervises the radio resources in the Base Transceiver Station (BTS). • Together with the BTS, the BSC constitutes the Base Station System (BSS), responsible for the management and cell configuration data of the radio network.
FUNCTION OF BSC The Main functions of the BSC are: 1. Administration of BSS resources 2. Supervision of the BTS 3. Connection handling of mobile stations 4. Locating and handover 5. Administration of paging 6. Transmission network management 7. Operation and maintenance of the BSS
BTS • A Base transceiver station (BTS) is a piece of equipment that facilitates wireless communication between user equipment (UE) and a network. • . UEs are devices like mobile phones (handsets), WLL phones, computers with wireless Internet connectivity. The network can be that of any of the wireless communication technologies like GSM, CDMA, wireless local loop, Wi-Fi, WiMAX or other wide area network(WAN) technology.
BTS
MSC • The Mobile switching Centre (MSC) is the primary service delivery node for GSM/CDMA, responsible for routing voice calls and SMS as well as other services (such as conference calls, FAX and circuit switched data). • Alternatively MSS is also called an MTS-U (Motorola telephony soft-switch) in Motorola terminology and as MSC-S in Ericsson terminology.
BTS VISIT BTS HAS A MAIN SECTIONS : 1. POWER SECTION 2. POWER PLANT 3. BTS MACHINE 4. TOWER & ANTENNA
POWER SECTION POWER SUPPLY IS GET FROM THREE WAYS : 1. GEB LINE 2. GENERATOR 3. BATTERYS
POWER PLANT
BTS MACHINE
BTS MACHINE MAIN PARTS BTS Divided in to following Parts: 1. POWER CARDS 2. BB2F 3. TRX 4. BOIA CARD 5. ALARM EXTENSION SYSTEM 6. RRI CARD 7. COUPLER 8. DUPLEXER
BB2F CARDS
BB2F CARDS Function of BB2F in BSNL BTS is digital signal processing and also Frequency hopping. One BB2F can operate 2 TRX. There are two condition of BB2F which is detected by leads… 1. green - Ok 2. red- Faulty
TRX is Equipment which handles calls of user. • One TRX can handle 8 calls per second. • We can use maximum 12 TRX on one BTS. • It is depend on bb2f card which maximum value is 6. TRX
BOIA CARDS
BOIA CARDS • BOIA(Base Operation and Interface unit) card is used for software Programming. • BOIA card is like brain of BTS. • There are serial port in it for connect it to laptop. • The BOIA card in the BTS is for maintaining the total functionality of the BTS. It consists of a local management port(LMP) through which a system can be connected with Others
It collects working status of various units BTS and extend them to Operation & Maintenance (o & m) Monitoring Stations. ALARM EXTENSION MANAGER
• RRI card is used for connection of ODU (outdoor unit). • This antenna is used for microwave link which connect one BTS to other BTS. RRI CARDS
• When we use more than two TRX then it is require to coupler and then it connect with Duplexer. • One combiner is used to handle two TRX. MULTI COUPLER
• Duplexer is a device which is used in BTS to use same antenna for Transmission as well as receiver. • Antenna has two cable one for TX & RX which connect with Duplexer. DUPLEXER
• Tower is used to give height to antenna. • Height of tower is 40m to 75m. TOWER & ANTENNA
• There two antenna is used in BTS : • One for transmission & reception of user’s signals which is called GSM antenna. • Second antenna is microwave antenna which is used to get & forward link from other BTS. • Second antenna is also called as drum antenna. ANTENNA
Bhrat sanchar nigam limited Industrial Training PPT
Bhrat sanchar nigam limited Industrial Training PPT