Advantages of MF-TDMA

A Comparison of VSATPlus 3 MF-TDMA and SCPC Technologies

 

Feature VSATPlus 3   
   SCPC VSATPlus 3 Benefit
Space
segment
utilization

Built in Bandwidth on Demand
allocates bandwidth only when a
site has traffic to send.
Bandwidth Guarantees (CIR) can          
be set to ensure bandwidth in a
busy network

Fixed bandwidth allocation.
Bandwidth is dedicated on a
link basis. If one link needs
bandwidth and another is idle        
there is no sharing
VSATPlus 3 uses
less space segment
in a dynamic traffic
environment
Connectivity Full Mesh
Partial mesh

1-Star (remote to remote
   calls require a double
    satellite hop)
2-Mesh requires extra
   equipment per site

Lower equipment
cost in a mesh or
partial mesh
network
IP networking
support
IP network support is built in at no
extra charge

Ethernet interface and TCP
performance enhancements
are typically extra hardware
and extra cost

IP networking is
built in and not just
an add-on
Network
Capacity
Expansion

Significant expansion of network
traffic is user-configurable by
simply adding a Rf carrier via a
Web interface. No increase in
antenna size or SSPA power
needed with expansion. No site
visits are required

Expansion requires additional
hardware for the sites to
connect to any new site.
Network expansion
with VSATPlus 3 is
easy.
Multi Service
Voice/Video/Data      

Multi-levels (7 levels) of Quality of
Service is built into the VSATPlus
3. The levels are user
configurable

QoS is not provided or is an
add-on.
Better user
application
performance
Single point of
failure in the
network

VSATPlus 3 has no single point of
failure. If one site goes down
then traffic is dynamically routed
to any other site in the network

 

When the SCPC modem or a
site goes down then the traffic
is lost also
Robust network
operation with
VSATPlus 3
Data Privacy VSATPlus 3 splits up user traffic
for transmission on different
carriers that dynamically shifts
over time

SCPC transmit data on a
single frequency making it
easy to decode and by a 3rd
party

 

Built in data privacy
Network
Management
MF-TDMA network management
and administration is
accomplished via a the web
interface at any site in the
network.
Typically only local modem
status is available.
Network operational
picture is clear

 

 

  

VSAT Communication Equipment & Solutions