Specifications

EASTAR UHP-1000 SERIES SATELLITE ROUTER
INSTALLATION AND OPERATION MANUAL, V. 2.3
(SW VERSION 2.2.9)
© ROMANTIS 2010 11 www.romantis.com
Figure 3 Typical network diagram for MCPC broadcasting.
 TDM/TDMA network – a network mode with dynamic redistribution of satellite
network capacity consisting of Hub and Terminals. The TDM/TDMA network
consists of:
o Hub is a central station of the network that is managing operations of all
Network Terminals and distributing the bandwidth accordingly to actual
traffic load and predefined QoS. Hub is also acting as a gateway,
concentrating and routing traffic of all Network Terminals to/from external
networks. Hub consists of one or several UHP-1000 routers depending on
network size. (See Figure 4)
Hub constantly broadcasts common MCPC carrier - Outroute (1) dedicated
to all network Terminals. Hub uses Time Division Multiplexing (TDM) to
deliver data to specific terminal or to some group of terminals. Such data
consists of user traffic and network management commands.
Hub receives its Outroute channel from the satellite for calculation of the
Time To Satellite (TTS) delay that is required for network synchronization.
o Terminal - is network access equipment that interacts with the Hub in
Hub/Spoke (Star) topology. Terminals receive the MCPC Outroute (1)
broadcasted from the Hub and respond to the Hub via Time Divided
Multiple Access (TDMA) carrier - Inroute (2). One or several TDMA
Inroutes are shared between groups of Terminals. Each Terminal
transmits its information as packets (burst) to individually-assigned time-
slot determined by the Hub.
o Mesh Terminal – an advanced mode of operation of basic Terminal that
allows simultaneously receiving information from the Hub and other
remotes. Mesh Terminal is also based on UHP-1000 router, but with
enabled burst demodulator (which is software activated option of any
UHP-1000 router). In such advanced mode Terminals may exchange
Satellite
EASTAR Terminal
MCPC
1
High-speed
demodulator
Router
UHP-1000
Burst
demodulator
Universal
Modulator
АС EASTAR
SCPC
1
Users
Users
1
High-speed
demodulator
Router
EASTAR Uplink
MCPC
1
UHP-1000
Burst
demodulator
Universal
modulator
Data source
High-speed
demodulator
Router
UHP-1000
Burst
demodulator
Universal
Modulator