Multiprotocol Encapsulation

Multiprotocol Encapsulation, or MPE for short, is a Data link layer protocol defined by DVB which has been published as part of ETSI . It provides means to carry packet oriented protocols (like for instance IP) on top of MPEG transport stream (TS).

Another encapsulation method is Unidirectional Lightweight Encapsulation (ULE) which was developed and standardized within the IETF as RFC 4326.

Protocol Outline[]

MPE uses sections to carry the user datagrams. The section header is used to convey:

• the frame's destination MAC address
• optional Logical Link Control (LLC) and Sub-Network Attachment Point (SNAP) information
• a payload scrambling indication
• a MAC address scrambling indication

MAC addresses from 1 to 6 bytes length may be used. The format of MPEG-2 DSM-CC sections happens to be compatible with DVB MPE.

MPE-based IP Service Offerings[]

Service Architecture[]

A complete IP service offering over MPEG-2 TS can be established by organizing MPE streams into one or more carried on a broadcast network by means of the mechanism which is also defined in ETSI .

Commercial Offerings[]

Both major European satellite operators (SES and Eutelsat) are offering commercial IP services using MPE (such as ASTRA2Connect) to both businesses and consumers.

External links[]

• DVB Project Homepage
• ETSI Homepage
• ASTRA2Connect website

See also[]

• IP over DVB
• ASTRA2Connect