BII Technology

Broadband for Industrial Internet of Things

BII® (/Bee/, Broadband for Industrial Internet) is an innovative long range wireless broadband technology developed by Doodle Labs. Standing on the giant shoulders of the state-of-the-art COFDM/MIMO technology used by the ubiquitous WiFI (IEEE 802.11), BII further extends it to meet the challenges of Industrial IoT applications. BII technology focuses on high reliability data communication over long distances and provides frequency flexibility for licensed and license free bands. BII Technology is carrier grade and field proven in numerous demanding applications. The mix of feature rich networking, long range, choice of frequency bands, and native IP architecture makes BII an attractive wireless communication technology.

IIoT Connectivity Landscape

There is a diverse set of needs for the optimum wireless connectivity. Many technologies have been developed to optimize a different set of criteria (e.g. range, power, speed). Fig 1 shows the application space for each of the major wireless technologies. It is easy to understand that each connected object will have its own requirements in terms of data throughput, latency, range, mobility, power etc. No single technology can satisfy all different use cases.

BII Wireless Technology

BII technology complements Wi-Fi and Cellular networks and combines best of their features to offer an efficient, flexible and economical connectivity solution ideal for IIoT applications whether indoor or outdoor and installed in public, private or hybrid networks. Simple sensor data from BII-enabled nodes can fuel analytics platforms, such as those for artificial intelligence and machine learning. It is to be noted that currently, for applications requiring Broadband performance in medium to long range (about 10 miles), the only possibility is to use public cellular networks with its associated high monthly recurring costs and low QoS. BII technology fills the gap between public cellular and Wi-Fi based networks that require high bandwidth, longer range, low latency and high QoS.

Doodle Labs’ BII technology offers compelling features for Industrial IoT applications including long range, high throughput, low latency, secure transmission and advanced QoS. BII Technology embraces and extends the state-of-the-art COFDM/MIMO technology specified in IEEE 802.11 industry standard. However, unlike ubiquitous Wi-Fi networking, BII technology optimizes a different set of important operating parameters to create a new technology profile (i.e. waveform).

As shown in Fig, BII profile fine tunes numerous physical and MAC layer parameters to achieve interference resistant, robust wireless broadband communication for Industrial IoT applications while preserving all the benefits of the advanced IEEE802.11 standard and its large ecosystem. Additionally, BII incorporates extensions for software defined frequency band, channel size and center frequency. The channel size can be software defined between 3~40 MHz as required by the application’s throughput requirements. The ability to define the channel size coupled with auto adjusting COFDM bit rates allows BII to be spectrum efficient and operate at the maximum SNR possible. These extensions open many new possibilities, making BII a versatile wireless technology.

Key BII Features

State-of-the-art Performance RF
  • Long range and high throughput
  • Available in 100 MHz – 4 GHz frequency range in form factor compatible models
  • Interference resistant COFDM/MIMO for improved link quality in difficult RF environments;
  • Exceptional Multipath performance for NrLOS obstructions
  • Adaptive radio modulations from BPSK up to 64QAM, with continuous per packet optimization to maximize link performance in dynamic environments
  • Software defined channel size for efficient re-use of spectrum
  • Software defined operating frequency for global applications
  • Time Division Duplexing (TDD) for bi-directional traffic
  • Convolutional coding, Forward Error Correction (FEC), ACK-retransmits, Maximal Ratio Combining, Spatial Multiplexing, Beam forming and Space Time Block Coding for robust data transmission over noisy spectrum and dynamic directional orientation due to roll and pitch of mobile vehicles
  • Fast handoff for mobile applications
Performance Networking
  • Ultra-Reliable Low Latency Channel (URLLC) for Command and Control as well as optimized video streaming channel on the same radio link
  • End-to-end IP architecture for Unicast and Multicast traffic
  • 256-bit AES encryption for over the air data

The public cellular LTE networks are increasingly considered for IIoT applications due to their easy access. However, as shown in Fig 3, the public cellular networks offer the worst price-performance ratios. The public networks are shared with a large number of users and hence they are lower speed, low QoS, high latency, and available at high monthly recurring charges. Traditionally, the large cellular networks have been built for connecting very large number of people and carry voice/data traffic. These networks are struggling to keep up with the explosion of the data requirements from the smartphone users. Sharing these networks for the IIoT traffic is not the most ideal situation.

Special Frequency Bands for All Markets

A very unique feature of BII Technology is software defined frequency band and channel size. The BII waveform can operate in any frequency band between 100 MHz ~ 6 GHz. The channel size can be software defined between 3~20 MHz as required by the application’s throughput requirements. The ability to define the channel size coupled with auto adjusting bit coding rates allows BII to be spectrum efficient and operate at the maximum SNR possible. This feature opens many new possibilities, making BII a versatile wireless technology useful in a large number of uses cases in many countries around the world.


Doodle Labs’ BII technology (Broadband for Industrial IoT) leverages the state-of-the-art MIMO performance of the ubiquitous Wi-Fi (IEEE 802.11) and extends it’s use in any frequency band to provide cost effective solution to implement private wireless networks for applications requiring reliable and high throughput over long distances.