Rf Channels; Logical Channels - Wavecom W74PC Manual

System Services Offered
mini-C
For the land mobile service, as C, not approved for
GMDSS, compact all-in-one unit housed in the antenna
FleetBroadband Maritime version of BGAN
SwiftBroadBand Aeronautical version of BGAN
FleetPhone Maritime, regional satellite phone
LandPhone Regional satellite phone, same as FleetPhone
ISatPhone Global satellite phone service based on GMR-2

RF Channels

Band
L-Band Frequency Range
C-Band Frequency Range

Logical Channels

The logical channels are described in the table below.
Name
NCS Common
NCS Assignment
NCS Spot-beam Identification
NCS Inter-station
NCS Registration Acknowledge-
ment
LES Assignment
LES Inter-station
MES Request
MES Response
MES Registration
MES Call Acknowledgement
SCPC channel
Shared channels
The only frequencies the MES initially knows are the frequencies of the NCSC in all regions - all other fre-
quency information is dynamically extracted from the NCS Bulletin Board or in session oriented signaling
messages. After being switched on, the MES must be told (or remembers) in which region it is currently
located, and will automatically tune to the corresponding frequency of the NCS. The terminal will then
search through the NCSS spot beam ID frequencies to identify the best spot beam.
300  SAT System
Direction
Receive (Satellite – MES)
Transmit (MES – Satellite)
Receive (Satellite – NCS/LES)
Transmit (NCS/LES – Satellite)
Type Function
Control Network Bulletin Board status infor-
mation
Control Channel assignment
Control Spot beam identification for MES
Control NCS-LES signaling and assignment
Control Registration acknowledgement
Control Stand-alone or NCS backup assignment
Control LES-NCS signaling
Control Access request channel
Control Signaling response channel
Control Initial registration
Control Call acknowledgement
User Circuit switched
traffic
User Packet switched
traffic
WAVECOM Decoder W74PC, W-PCI/e, W-CODE, W-CLOUD Manual V9.1.0
Introduction Max
Rate (fax, data)
2008 Data: 9.6 kbps
Frequency
1525.0 – 1559.0 MHz
1626.5 – 1660.5 MHz.
3600.0 – 3629.0 MHz
6425.0 – 6454.0 MHz
Direction
Forward (to MES)
Forward (to MES)
Forward (to MES)
Forward (to LES)
Forward (to MES
Forward (to MES)
Return (to NCS)
Return (to LES,
NCS)
Return (to NCS)
Return (to LES,
NCS)
Return (to LES)
Forward and return
Return
User Data