We developed a technology called MetaCarrier® that is used to embed and detect Carrier ID on video and data satellite carriers. The Meta prefix is used in its meaning of a carrier used to describe another carrier. In this case, MetaCarrier means that we have a separate carrier that contains information, which is used to describe the host carrier, a group of carriers, or a relay, such as a satellite transponder, or terrestrial wireless relay. What is unique is that the MetaCarrier is embedded using spread spectrum techniques within the host carrier(s) or relay, without adding appreciable noise to the carrier(s) or relay.
The MetaCarrier technology overlays the very low data rate Carrier ID data in a spread spectrum carrier, onto the carrier that it is referencing, Figure 1.
MetaCarrier is currently available in these products:
Frequently Asked Questions
What equipment and/or sub systems must a company obtain to enable Carrier ID (CID)?
The modem, encoder/modulator, or stand-alone modulator needs to be able to support the Carrier ID feature and function.
What do I ask an equipment supplier when seeking CID capabilities?
The questions to ask are:
- Does the modem, encoder/modulator or stand-alone modulator that I am purchasing support CID? If not, when will it?
- Does my existing modem, encoder/modulator or stand-alone modulator that I previously purchased from you support CID? If not, when will it?
What information is available in CID, and who has access to CID information?
CID consists of both mandatory and optional data fields. The mandatory fields consist of a DVB CID Global Unique Identifier (fixed by the manufacturer and not editable by the user) and the CID format revision code. The DVB CID Global Unique Identifier is based on the IEEE-defined 64-bit extended unique identifier (EUI-64). It can be derived from a 48 bit MAC address or a 48 bit Space Data Association modulator identifier. The CID format code is a revision code that anticipates possible changes in the number and possible content of the fields in the content ID table.
The content ID table provides for the following optional information to be added by a user: Latitude and longitude, telephone number, user defined data fields (7 total) for other information as determined by a user and their satellite operator.
Only satellite operators will govern and have access to this carrier ID information.
Who is responsible for reporting CID information?
This information will be gathered by the satellite operator during the earth station line-up procedure. It is the responsibility of the modem, encoder/modulator or stand-alone modulator operator to have the proper information available and pre-loaded.
When will CID be available, and when will I have to implement CID?
The DVB-CID standard was finalized, and is published in ETSI TS 103 129. It will soon be supported in new modulators. A timeline for a CID by satellite providers has not yet been determined.
Can the use of CID impair the transport stream from being received and decoded?
No – The Carrier ID technology does not modify the transport stream and was designed specifically to not create interference either with the carrier it is referencing, or to adjacent carriers.
Can the use of CID restrict usable “bits” in a transport stream?
No – The Carrier ID technology does not modify or affect the transport stream.
Will the use of CID prevent all occurrences of satellite interference?
No – Not all satellite interference can be prevented. CID is meant to greatly decrease and significantly mitigate the elapsed time when an interference event transpires. Also, a heightened awareness and demand for accuracy when uplinking and an increased and expanded requirement for higher levels of training should help to reduce the actual number of RFI events. No matter how stringent the requirements regarding CID for ground services, there are going to be some who do not comply. There are approximately 15,000 to 25,000 interference events a year for all satellite carriers.
|Combat Satellite Interference with MetaCarrier
SatTV interview with Daniel Enns
|WTA interviews Fred Morris about Carrier ID and its
adoption status by the industry