RRU5501/VMD A Multi-mode Remote Radio Unit (RRU) That Supports LTE FDD NR FDD And GSM Technologies On The 1800 MHz (Band 3/n3) And 2100 MHz (Band 1/n1) Frequency Bands

Overview

The Huawei RRU5501 is a multi-mode remote radio unit (RRU) that supports LTE FDD, NR FDD, and GSM technologies on the 1800 MHz (Band 3/n3) and 2100 MHz (Band 1/n1) frequency bands. The designation in the product code refers to a specific variant and confirms its multi-band capabilities. 

• Manufacturer: Huawei Technologies Co., Ltd.
• Model: RRU5501/VMD.
• Unit type: Remote Radio Unit (RRU).
• Function: Part of a distributed base station system, connecting the antenna system and the Baseband Unit (BBU). 

• Supported bands and technologies:
  • 1800 MHz (Band 3/n3): Supports GSM, LTE FDD, and NR FDD.
  • 2100 MHz (Band 1/n1): Supports UMTS, LTE FDD, and NR FDD.
• Transceiver mode: 4T4R, meaning it has four transmit and four receive channels for improved capacity and coverage.
• Output power: Supports a typical configuration of 4x60 W total RF power.
• Supported bandwidths:
  • 1800 MHz (LTE FDD): 5, 10, 15, and 20 MHz.
  • 2100 MHz (LTE FDD): 5, 10, 15, and 20 MHz.
  • 2100 MHz (NR FDD): 5, 10, 15, and 20 MHz.
  • NR SUL (Uplink): Supports 15 and 20 MHz. 

• Input power: Direct Current (DC).
• Operating temperature: -40°C to +55°C.
• Dimensions: Approximately 400 mm x 300 mm x 120 mm.
• Weight: Approximately 20 kg.
• Cooling: Employs passive cooling through heat sinks, which is noted for its efficiency and reduced maintenance.
• Interface ports: Includes ports for power, alarm cables, and optical inputs for connection to the BBU. 

• PIM cancellation: Built-in Passive Intermodulation (PIM) cancellation reduces signal interference and improves network coverage.
• Energy efficiency: Newer generations of Huawei RRUs, which include this model, feature technologies like "Deep Sleep" to reduce power consumption during off-peak hours.
• Fronthaul support: Supports packet-switched fronthaul via eCPRI, providing more flexible and future-proof connections to baseband units. 
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