BII Technology

BII® (/Bee/, Broadband for Industrial Internet) is an innovative {patented} long-range wireless broadband technology developed by Doodle Labs. It focuses on high throughput data communication over long range and provides frequency flexibility to operate in licensed and license free bands.

BII leverages state-of-the-art COFDM/MIMO technology used by IEEE 802.11 standard and extends it to meet the challenges of Industrial IoT applications. It is carrier grade and is field proven in some of the most demanding environments in the world by Fortune 100 companies. The mix of long-range, choice of frequency bands, mobile mesh, native IP architecture and feature rich networking makes BII a state-of-the-art wireless communication technology for many Industrial IoT use cases.

Industrial IoT Connectivity Landscape

As the world becomes further connected and new applications arise, a diverse set of requirements emerge for wireless connectivity. Many technologies and standards have been developed to optimize for different applications and their corresponding requirements (e.g. range, power, speed). No single technology can meet the needs of each application.

WiFi is the uncontested choice for license free, high speed WLAN category. Bluetooth and a few variants of IEEE 802.15.4 are considered for very short-range applications. On the other end, LoRA, SIGFOX, and NB-IOT are discussed for the extremely long-range, low power, low throughput sensor connectivity.

BII has been designed to fill the gap for long-range and high-throughput communications. In particular, it marries the benefits of WLAN and cellular technologies.

WLAN or Cellular? Best of both.

BII combines the best of WiFi and cellular to offer an efficient, flexible, and economical connectivity solution ideal for Industrial IoT applications, whether indoor or outdoor and installed in public, private, or hybrid networks.

Public cellular LTE networks are often considered for Industrial IoT applications due to their easy access. For applications requiring broadband performance at medium to long ranges (about 100+ meters), the only possibility was to use public cellular networks. Large cellular networks are built for connecting very large numbers of people and to carry voice + data traffic. Their capacity is shared and hence they can only provide lower speed, low QoS, and high latency to each user. These networks are already struggling to keep up with the explosion of the data requirements from smartphone users and sharing these networks for demanding Industrial IoT traffic would not be the most ideal situation. Moreover, they have worst price-performance ratios given their high monthly recurring costs.

BII addresses this pain point by taking the robust COFDM/MIMO technology specified in IEEE 802.11 and further optimizing operating parameters to create a new BII technology profile (i.e. waveform) that performs at long distances. All the benefits of WiFi, such as high QoS, low latency, and high speeds are extended to distances typically reserved for cellular technology.

BII optimizes numerous physical and MAC layer parameters (e.g. frame timing matrix) to achieve interference-resistant, robust, wireless broadband communication while preserving all the benefits of the 802.11 standard and its large ecosystem.

Application-Specific BII profiles

WiFi is a profile (waveform) based on IEEE 802.11 technology. It focuses primarily on providing high throughput at short distances and indoor environments. Instead of applying a single profile for different use cases – like generic WiFi would — BII creates a technology profile best suited for various use cases.

For example, command and control for rapidly moving vehicles require reliable and low latency communications, which are served by BII’s URLLC (ultra reliable low latency channel). BII includes MIMO, multi-path, forward error correction, ACK-retransmits and various other parameters to achieve these objectives.

For highly sensitive applications, BII features over the air 256-bit AES encryption into the profile. BII nodes are compliant with Federal NIST standards (e.g. FIPS 140-2 Level) and are deployed in numerous US Department of Defense programs of record.

Special Frequency Bands for All Markets​

A powerful feature of BII is that the frequency band and channel size are software defined. The BII waveform can operate in any frequency band between 100 MHz ~ 7 GHz. The channel size can be software defined between 3-40 MHz as required by the application’s throughput and range 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 signal-to-noise ratio possible.

Key BII Features

State-of-the-art Performance RF
  • Long range and high throughput
  • Available in 100 MHz – 7 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
  • Mobile Mesh for reliable and auto confiiguring networks (MANET)
  • 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