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Dual Unified Efficient Transmission (DUET)

Low and Mid Band Hybrid Spectrum Overview

Many organizations have needs for both overall regional wireless coverage and also areas of high demand that require true broadband capacity. In such situations, Select Spectrum recommends Dual Unified Efficient Transmission (DUET) which utilizes low frequencies for wide coverage and higher broadband frequencies where extra throughput is required. This efficient strategy has been used by major wireless carriers, and Select Spectrum can provide the needed frequencies to help your company benefit from a similar approach.

As shown in the example below, NB-IoT can provide region-wide coverage in a cost-effective manner while extra capacity is delivered in hot zones where broadband is required. Using the Cellular industry’s “3GPP" standards, both frequencies may be supported through the same antenna and base stations to reduce capital and operating costs while providing needed capacity.

  1. DUET strategy allows organizations to have a better spectral efficiency by the providing the needed spectrum as per the user application locally or regionally.
  2. DUET strategy provides flexibility in managing radio resources, balancing traffic, and supporting different quality of service (QoS).
  3. DUET strategy helps achieve better CapEx and OpEx while providing needed capacity.

Example Low Band/Mid Band DUET Network Coverage

  1. Low band (<1 GHz) physics allow coverage of all areas of operation.

    * For some applications throughput and latency may be insufficient for certain areas.

  2. Mid band spectrum (1-4 GHz) provides excellent speeds plus non-line-of-sight capabilities over moderate range.

Low Band
Coverage
Capacity
Low Band - Network
podcasts
Mid Band
Coverage
Capacity
Mid Band - Network
podcasts
DUET Low + Mid Band
Coverage
Capacity
DUET - Network
podcasts
podcasts
podcasts

Radius ≈ 3 miles

Radius ≈ 25 miles

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