»TDM/TDMA Hub

UHP TDM/TDMA Hub has a high-availability modular design, based on principles of distributed computing. The Software-Defined Architecture pioneered by UHP Networks is at the core of the Hub design. The Hub is composed of Universal Controllers (UC), interconnected with Gigabit Ethernet links on the data side and with IF splitter/combiner on the IF side. Each UC is implemented with a single UHP-200 module and has two IF interfaces and two Gigabit Ethernet interfaces. Depending on the software license installed, a specific UC can operate as Outroute Controller (OC) generating a single Outroute TDM (DVB) carrier, Multi-Carrier (MCD) Inroute Controller (IC) capable of receiving up to 4 TDMA carriers, SCPC DAMA transmitter or receiver. UC may have no specific license installed, in which case it serves as a standby resource in the UHP Smart RedundancyTM scheme.
Highlights:
  • Support of various topologies: ‘Hub and Spoke’, ‘Dual Gateway’, ‘Mesh’, ‘MF TDMA Mesh‘
  • Easy/cost-effective scalability up to 254 TDMA In-bound channels, 500 000 terminals per network
  • Enhanced DVB-S2/S2X modulations with 5% or 20% roll-off
  • Multichannel MF-TDMA demodulator with innovative protocol, proven efficiency of 96% vs. SCPC
  • Adaptive coding and modulation (ACM) in forward/return channels, including SCPC/TDMA modes
  • Ultra-low latency VSAT system with round-trip delay about 570 ms for TDMA mode of operations
  • Support of VLAN, multi-level QoS, special handling of real-time traffic, TCP acceleration
  • Fast network startup — network is ready
  • for use in less than a minute upon power-up
  • User-friendly Network Management System with multi-user web-interface and VNO support
  • Support of 1:1 automatic redundancy without use of external controllers
Description

A single 1RU unit UHP-240 houses two UC and can implement up to two OC and up to two MCD-IC. Extra Outroutes and Inroutes can be added by growing the number of UC with appropriate licenses. The Hub can support any redundancy scheme for any of its elements, and also geographical redundancy for multiples Hubs.

The Network Management System (NMS) runs on a Linux server. It is separate from the Hub, so it’s failure would not bring down the VSAT network. While the NMS optional in a basic Hub, it is required in the high-end Hub designed to control a network operating over High-Throughput Satellite (HTS) with multiple spot beams.