Contact Us
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.

Hughes HX System

Resource Type
Data Sheet

The Hughes HX System is designed and optimized for carrier- grade IP broadband networking and specialized applications such as mobility and mesh networking. The HX System is a broadband satellite system with an economical gateway earth station and high-performance remote terminals.

HX System Architecture

The core component of the HX System is the HX Gateway, which acts as the system master and includes the network management and dynamic bandwidth assignment manager. The HX Gateway uses a DVB-S2 carrier with Adaptive Coding and Modulation (ACM) for the outbound channel received by all HX System remote terminals. HX remote terminals utilize FDMA/TDMA channels to communicate back to the HX Gateway (star mode) or to each other (mesh mode).

The FDMA/TDMA channels of the HX System are highly efficient and are based on the industry-leading standard, Internet Protocol over Satellite (IPoS), which has been endorsed by ETSI, ITU, and TIA. The HX System FDMA/TDMA channels of the HX System support data rates up to 9.8 Mbps.

Efficiency and flexibility in utilizing satellite bandwidth are core to the design of the HX System. Each link, in star or mesh mode, can be configured to provide a QoS tailored for an individual remote terminal. And each remote link can be independently configured with unique Commited Information Rates (CIRs), thereby allowing QQ a service provider to develop a service tailored to their customers’ specific requirements. In addition, the HX System bandwidth allocation scheme is designed so that idle terminals can be configured to release all bandwidth assignments thus ensuring optimal bandwidth utilization.

HX Gateway Features

  • Compact hub configuration
  • Intelligent, protocol-sensitive bandwidth assignment for Target Markets optimum performance and efficiency for each application
  • Dynamically assigned CIRs per remote or group of remote terminals
  • High-performance IP feature set
  • End-to-end network security
  • Advanced network management capabilities including detailed remote diagnostics
  • Active redundancy for all critical components
  • Optional mesh controller for supporting single hop remote-to-remote connectivity


  • Quality of Service features include:
    • On-demand Constant Bit Rate (CBR) services
    • Adaptive CBR with Minimum, Maximum, and user-definable step-sizes
    • CIR with Minimum, Guaranteed, and Maximum rates
    • Backlog-based dynamic stream with weighted fair queuing
    • Class-based weighted prioritization
    • Multicast data delivery
    • Four levels of IP traffic prioritization
  • Bandwidth allocation
    • Supports both preassigned (static) traffic assignment and dynamic traffic assignment
    • Idle remotes can release all network resources
  • Bandwidth optimization
    • Integrated TCP spoofing
    • TurboPage HTTP acceleration (optional)
    • Integrated TCP and UDP compression
    • Header compression
    • Outbound Adaptive Coding and Modulation
    • Inbound Adaptive Inroute Selection
  • IP routing capability
    • IPv4 and IPv6 native support
    • Staticnd dynamic addressing
    • DHCP server or relay
    • DNS caching
    • RIPV1, RIPV2, BGP routing support
    • Multicasts to and from the LAN by using IGMP
    • NAT/PAT
    • VRRP
    • VLAN tagging (end-to-end)
    • Firewall support through integrated access control lists
  • L-band interface on forward and return channel
  • Remote terminal management via the Hughes Unified Element Manager and SNMP agent
  • Backhaul features
    • Real-time Bypass - Just-In-Time burst scheduling
    • Configurable jitter buffer
    • Support for Clock Synchronisation (optional)
    • Remotes with low power consumption
  • On-the-Move features (optional)
    • FDMA/TDMA channel spreading
    • NEMA interface
    • Roaming support
    • Doppler compensation
    • Fast reacquisition of outbound
    • Persistent IP connection
  • Mesh features (optional)
    • Simultaneous star/mesh
    • Multichannel mesh receiver at remote
    • Mesh TCP and UDP connections
    • Mesh Gateway

The IPoS Advantage

The Hughes family of satellite terminals and routers is compliant with the global IPoS standard, the only standard approved by the TIA, ETSI, and ITU standards organizations. IPoS enables Hughes broadband routers/terminals to provide superior performance and efficiency by providing a clearly defined interface conforming to the ETSI SI-SAP standard. IPoS provides truly dynamic bandwidth assignment—remote sites requiring no traffic capacity are assigned no resources. Finer granularity allows a lower average burst overhead, thereby increasing efficiency.