LTE Network Expansion: A Technical Insight with the RRU4466
The constant evolution of LTE networks is essential to meet the growing demand for mobile data. In this expansion project, weโre deploying the 2100MHz LTE, using an existing BB 5216 in the service cabinet and installing 3x RRU 4466 B1/B3/B7 radios.
T###1_##> sdir
Shared 3x antennas (ODV-065R15M18JJ-G) at a height of 80 meters will support 700/2600/1800/2100MHz LTE systems. Notably, the 2100MHz and 1800MHz bands will feature 4x4 MIMO, while the 2600MHz remains with 2x2 MIMO.
The RRU 4466 B1/B3/B7 radios, installed on simple rail mounts within the towerโs platform, ensure multi-band support and optimized performance for LTE networks.
Post-upgrade Setup:
- BB5216 remains unchanged.
- 700MHz (B28A): No modification.
- 2600MHz (B7): Now equipped with RRU4466, MIMO 2x2, 80W.
- 2100MHz (B1): New carrier with RRU4466, MIMO 4x4, 160W.
- 1800MHz (B3): Upgraded with RRU4466, MIMO 4x4, 160W.
T###1_##> hget SectorCarrier= noOfTxAntennas|noOfrxAntennas|configuredMaxTxPower|maximumTransmissionPower
Technical Note: In Moshell, power levels are presented in mW, so 80W = 80,000mW.
The New Addition: RRU4466 and Its Features
The Ericsson RRU4466 is pivotal for advanced LTE deployments, offering multi-band support across 1800MHz, 2100MHz, and 2600MHz. Its flexibility with MIMO 4x4 and MIMO 2x2 configurations maximizes spectral efficiency, significantly boosting throughput.
Max Power and Energy Efficiency
Each RRU4466 features 4 branch outputs delivering 20W per branch, totaling 80W per RRU. In a three-sector site, using three RRUs per sector, the combined output can reach 240W, providing robust and consistent coverage.
The RRU4466 excels in energy efficiency, dynamically adjusting power consumption based on network traffic. This feature results in considerable savings, particularly in areas where user density fluctuates.
Physical Dimensions, Weight, and Temperature Range
The RRU4466 is compact, with dimensions of 66.6 cm x 40.1 cm x 20.1 cm, and weighs around 45 kg. Its resilience to harsh environments makes it suitable for varied deployment locations, with an operating temperature range from -40ยฐC to +55ยฐC, ensuring reliable operation in extreme conditions.
Energy Efficiency and Cooling System
One of the key advantages of the RRU4466 is its passive cooling system, which eliminates the need for fans. This design not only reduces power consumption but also minimizes maintenance costs and the risk of mechanical failure.
Additionally, the RRUโs ability to adjust its power output based on real-time network demand further optimizes energy use. During periods of low traffic, power consumption is significantly reduced, but the RRU4466 can operate at full capacity during peak times without sacrificing performance.
Conclusion
The integration of the RRU4466 in LTE network expansion projects marks a substantial step forward in addressing new technological demands. Its support for MIMO 4x4 and MIMO 2x2 not only improves spectral efficiency but also facilitates network scalability in an efficient and reliable manner. With its robust environmental resistance and passive cooling system, the RRU4466 is a durable and cost-effective solution for operators seeking to enhance their network without compromising on quality or operational savings.
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