Introduction on
Construction Support
Scope of Construction work
1.Material delivery
2.Overview of Equipment’s
2.1. BBU
2.2. RRU
2.3. Antenna
2.4. SFP
2.5. Fibers, DC trunks and Jumpers
3.Start prep work
4.Power plant Swap
5.Start installation of supporting cables
6.Boom Swap
7.CBAND/DoD Installation
8.VQA
Material delivery
Crew will come to site to deliver the material for active
installation on tower.
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Overview of Equipment’s
1. BBU
2. RRU
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3. Antenna
4. SFP
5. Fibers, DC trunks and Jumpers
BBU: Baseband Provides CPRI ports or optical links for establishing
communication with Remote Radio Units (RRUs) and processing
signals in both the uplink and downlink. Baseband processing
resources for the encoding and decoding of. the uplink and
downlink radio signals.
BBU 5216: Supports 2G+3G+LTE(FDD&TDD)
-8000 connected users
-1.2 to 1.6 Gbps Downlink & 600 Mbps Uplink*
-Up to 24 cells & 960-1920 MHz antenna bandwidth*
-Up to 2000 FDD or 1000 TDD VoIP
WCDMA(3G)
-1152 CE Downlink & 4096 Total EUL CE*
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-336 Mbps Downlink & 168 Mbps Uplink
-Up to 24 cell carriers*
GSM(2G)
-Up to 48 TRX
R503(XMU): Baseband R503 Performs multiplexing and de-
multiplexing on common public radio interface (CPRI) links. R503
also provided media conversion from electrical to optical.
XMU(R503) Ports Splitting:
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BBU 6630:
Baseband 6630 is designed to provide high-performance
connectivity for mobile networks, to support for 2G, 3G, 4G,
and 5G technologies. It offers high throughput and low
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latency, for high-bandwidth applications such as video
streaming and online gaming.
–BBU 6630 capacity & capabilities equivalent to Baseband 5216
-Up to 3 sector and 6 band sites with 20 MHz 2T2R FDD cells
-Up to 6 sector and 3 band sites with 20 MHz 2T2R FDD cells
–Up to 3 sector and 3 band sites with 20 MHz 8T8R TDD cells
BBU 6648:
Baseband 6648 is a 5G NR digital baseband unit and supports
single mode LTE, single mode 5G NR, and mixed mode LTE+5G NR.
-10K Connected users
-Mixed mode NR+LTE
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-Max Throughput DL upto 10-15 GBPS and UL is upto 3GBPS
-Band Support:
-NR High band:4800MHz (3 Sectors,2 layers,800MHz Carriers)
-NR Mid band: 9600MHz (3 Sectors,16 layers,200MHz Carriers,6
Sectors,16 layers,100MHz Carriers)
-NR Low Band: 4800MHz (20MHz,4T4R Carriers)
-LTE:4800MHz (CPRI) Antenna BW and Mid band AAS (eCPRI)
5760MHz Terminating BW
BBU 6651:
RANP 6651 is similar to BB6648, with the difference of new
Ericsson silicon providing better energy efficiency (less power
consumption) and 6651 can be deployed the exact same way as a
BB 6648
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-The BB6651 supports 12 CPRI ports, enabling increased
connectivity for radio units.
-10K Connected users
-Mixed mode NR+LTE
-Max Throughput DL upto 15-20 GBPS and UL is upto 3GBPS
RRU (Remote Radio Unit):
RRU is the RF processing unit it transmits and receives signals,
RRU install at the top of the tower and mounted near the
antenna. RRUs can receive, transmit, filter and amplify RF signals.
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RRU interface with Antenna in one side and with BBU in the other
side.
-Converts the RF signal into data signal and the vice versa.
-Filtering and amplification of RF signal.
-Decides the coverage of the power capability.
Types of Radios used
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Types of BBU:
Antenna:
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GSM Antennas are responsible for transmitting and receiving the
radio signals that carry voice and data between mobile devices
and the base station.
-Interfaces with cell phone wirelessly and transmits/receivers RF
signals
-Decides that shape of the coverage as well.
SFP (Small Form-factor Pluggable):
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SFP is a compact, hot-pluggable network interface module used
for both telecommunication and data communications
applications.
SFP is a fiber optic module that fits into an SFP socket or port. It
facilitates seamless conversion of Ethernet signals into optical
signals to transfer and receive data.
Fibers, DC trunks and Jumpers
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Fiber: Wireless communication networks that define the key
criteria for interfacing transport, Connectivity and control
communications between baseband units (BBUs) and remote
radio units (RRUs).
RF Jumpers: RF jumper cables are interconnections between
passive and active components such as between Radio and
antenna.
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DC Trunks: Direct current (DC) is used in telecom since alternating
current (AC) just doesn't fare well for voice communications.
Which used to connect from Radios to Power breakers (Power
plant).
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Start prep work
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Before installation start assembling all equipment’s and keep
ready to fly on tower
Power Plant Swap
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-Mobile towers are typically rely on electrical power supplied by
the local power grid. In case of power outages mobile towers are
often have backup solutions such as diesel generators or Battery
bank to ensure uninterrupted service.
Boom Swap
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-Upgrade from 2T2R to 4T4R to enhances data throughput,
system capacity, signal quality, and overall network efficiency.
CBAND/DoD Installation
CBAND: C BAND refers to a range of radio frequencies commonly
used in the field of telecommunications and in satellite
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communications, C-Band uses frequencies from approximately 4
to 8 gigahertz (GHz). It is utilized for various purposes, including
satellite broadcasting, radar systems, and some wireless
communication services. The C-Band's characteristics make it
suitable for reliable long-distance communication and its use is
regulated to avoid interference with other frequency bands.
DoD: The term DoD refers to the Department of Defense in the
United States which uses 3.45 GHz Spectrum. DoD plays a crucial
role in telecommunications, Development and deployment of
DoD is secure and robust communication systems for military
purposes.
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DoD is advanced technologies to ensure secure and reliable
communication among military personnel, both nationally and
internationally. These efforts encompass satellite
communications, secure networks, encrypted voice and data
transmissions.
VQA (Video Quality Audit)
VQA: Video quality audit is the process which will proceed after
installation will be done on site. In VQA Visual inspection will be
done from customer through the remote site audit application
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(RSA) , If found any punch points like jumper and power cable
weather proofing and Labelling and all is not proper the crew
need to do proper weather proofing and taping and will complete
the VQA.
CRAN Site info:
CRAN - Centralized RAN will have the following bands
2100 - 2Q
1900 - 9Q
LAA - 5Q (license Assisted Access)
700 - 7Q
Note : LAA is only for Downlink Band and hence no VSWR on
them.
Abbreviations:
-> RSSI - Received Signal Strength Indicator
-> VSWR - Voltage Standing Wave Ratio
-> SDIR - System Diagnostic Interface Readings
-> CPRI- Common public Radio Interface
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-> eCPRI- Enhanced Common public Radio Interface
-> SFP -Small form factor Pluggable
-> AAS -Advanced antenna systems
-> RRU – Remote Radio Unit
-> BBU – Baseband Unit
-> GSM -Global System for Mobile Communications
-> CDMA -Code-Division Multiple Access
-> WCDMA - Wideband Code Division Multiple Access
-> LTE – Long term evolution
-> NR - New Radio
-> FDD - Frequency-Division Duplexing
-> TDD- Time Division Duplexing
-> NEID - Network Element ID
-> RSF - Remote Site File
-> STF - Some Tests Fail
-> ATP - All Tests Pass
-> RFDS – Radio frequency data sheet
-> RET – Remote electrical tilt
Thank you.
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