Regenerative Satellite Mesh - A Air Interface

"Regenerative Satellite Mesh - A Air Interface" (RSM-A) is an internationally standardized satellite communications protocol by Telecommunications Industry Association and European Telecommunications Standards Institute.

It is based upon the SPACEWAY K_a-band communications system developed by Hughes Network Systems. It is expected to be utilized by the Hughes Network Systems satellite called SPACEWAY-3.

The standard is meant to provide broadband capabilities of up to 512 kbit/s, 2 Mbit/s, and 16 Mbit/s uplink data communication rates with fixed K_a-band satellite terminal antennas sized as small as 77 cm.

The standard consists of the following documents:
*TIA-1040.1.01 Physical Layer Specification; Part 1: General Description
*TIA-1040.1.02 Physical Layer Specification; Part 2: Frame Structure
*TIA-1040.1.03 Physical Layer Specification; Part 3: Channel Coding
*TIA-1040.1.04 Physical Layer Specification; Part 4: Modulation
*TIA-1040.1.05 Physical Layer Specification; Part 5: Radio Transmission and Reception
*TIA-1040.1.06 Physical Layer Specification; Part 6: Radio Link Control
*TIA-1040.1.07 Physical Layer Specification; Part 7: Synchronization
*TIA-1040.2.01 MAC/SLC Layer Specification; Part 1: General Description
*TIA-1040.2.02 MAC/SLC Layer Specification; Part 2: SLC Layer
*TIA-1040.2.03 MAC/SLC Layer Specification; Part 3: ST-SAM interface

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General Description

The standard describes the various segments involved in a "RSM-A" satellite system including:
*Satellite Terminal: fixed satellite terminal for satellite communication linked to terrestrial hosts via connected LANs
*Satellite Payload: geosynchronous regenerative satellite payload and antennas
*Network Operations Control Center: involved ground network management and resource management

The uplink consists of a Frequency Division Multiple Access Time Division Multiple Access (FDMA-TDMA) where individual uplink spotbeams are assigned frequency channels out of the satellites frequency band. Satellite Terminals transmit on timeslots on its uplink beam's frequency channels using mechanisms such as Bandwidth-on-Demand (BoD) protocols with the Satellite Payload.

The downlink consists of a Time division multiplex (TDM) carrier bursts directed in a hoping fashion to different downlink beams each downlink frame timeslot. The downlink beams can be narrow downlink spotbeams during the point-to-point transmission part of each downlink frame or they can be downlink shaped beams that cover a much larger geographic area during the shaped beam transmission part of each downlink frame.

ee also

* [http://www.tiaonline.org Telecommunications Industry Association]
*List of broadcast satellites
*SPACEWAY
*SPACEWAY-3
* [http://pda.etsi.org/pda/queryform.asp ETSI free standard download (Email Registration Required)]