Designed for the military, the HNW was created to provide high bandwidth, long range line-of-site connectivity between users of widely dispersed Local Area Networks (LAN). The HNW is an ad hoc (i.e., self-forming, self-healing) implementation of an IP based wideband wireless network protocol using Directive Network Technology (DNT). DNT uses directive beam antennas to extend range and improve throughput. Directive antennas also provide inherent low probability of intercept and low probability of detection (LPI/LPD) capability.
Highband Networking Waveform Characteristics:
Ease of use
High throughput, long range OTM and ATH
Secure, HAIPE ready with AES TRANSEC covers
Standard network applications
Seamless sensor support
Interoperable with existing IPv4 networks
Also adheres to IPv6 open standards interface
The HNW can be considered a wireless Wide Area Networking (WAN) waveform that connects LANs and their users together. Envisioned to satisfy the WAN needs of all DoD, this waveform, which operates with equal effectiveness at the halt or OTM (on-the-move),has been designed to work in both air and ground tiers of a battlespace to provide seamless, self-forming connectivity between all users. Although the waveform has primary applicability to the wide area scenario, it can be used to provide high data rate user access in localized areas where operational command centers are numerous and data concentration is high.
HNW will be an SCA compliant waveform in the JPEO/JTEL library and certification plans are underway. From an architecture perspective, the HNW is formed at layers 1 and 2 in the OSI stack. Layer 2 for HNW is called the U-MAC (Universal Media Access Control) because it has been designed to universally link various routing (layer 3) and physical (layer 1) layers together. Currently, HNW interfaces with two open architecture layer 3 routing protocols: a) OLSR and b) OSPF with MANET extensions. HNW has two physical layers available:a) ASIC based OFDM modem and b) SCA compliant VHDL based single carrier modem.
The HNW has been implemented on two different COTS hardware platforms. These readily available components were used to define, develop, and demonstrate the capability of HNW. To date, the HNW has been demonstrated over five times with up to 15 nodes, ranges of up to 24 km, and data rates of up to 23 Mbps. Militarized components with higher overall performance are in design to provide greater throughputs and ranges than achieved with the current HNW implementation. Designs indicate performance with ranges exceeding 40 km and 100 Mbps for ground-to-ground applications.
Open Interfaces to NetOps
The HNW is designed to reduce crew sizes and training requirements by operating with a policy driven control interface. The waveform is designed to boot from an initial startup configuration defined by the user. Once booted, an external controller (NetOps) can redefine the operational states of the waveform within the radio. For example, NetOps can restrict (or permit) the spectral bandwidth, modulation type, power level, data rates, number of permissible links, or other controllable parameters given the current battlefield scenario. Control is achieved via an SCA compliant interface to an external Radio Manager function. The HNW then operates autonomously within these policy constraints.
Proposed Capability and Implementation
The following table captures the expected level of performance when the HNW waveform is implemented on a radio platform.
Radio chassis type
JTRS like vehicle adaptor
C- and Ku-band
Layer 2 (MAC)
Mobile, ad hoc, Directive Networking Technology with OLSR and PPPoE OSPF interfaces
ARQ and power control
Fixed time slots
Layer 1 (PHY)
Single carrier PHY
Software radio capability
SCA Framework 2.2.1 through Radio Manager Interface
O-QPSK, 16 QAM with 2 coding rates each
Data rate adaptation
20 rates between 2 and 110 Mbps using fractional bandwidths from 3.125 to 50 MHz