Ethernet header compression on QoriQ

[viktarpalstsiuk]

Are the any advised solutions for Ethernet header compression on QoriQ T1040 platform?

[yipingwang]

Hello Viktar,

Packet Data Convergence Protocol (abbrev. PDCP) is one of the layers of the Radio

Traffic Stack in UMTS and performs IP header compression and decompression, T1040 integrates SEC 5.4 supporting LTE PDCP.

IP Header Compression could be implemented over PPP, FMAN controller parser could support PPPoE+PPP.

If further discussion is needed, please describe your scenario in details.

Have a great day,
Yiping

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[viktarpalstsiuk]

We need to compress Ethernet header (SA+DA) in ethernet frame to send over custom 1Gb radio link. So we need to get Ethernet frame comming out of QoriQ with 2 or more bytes instead of full 12byte Ethetnet header. Is it possible?

[yipingwang]

Hello Viktar,

I think you could consider about PDCP solution mentioned previously, SDK 1.6 USDPAA contains an sample application "pdcp" in apps/simple_proto/app/, you could have a reference.

PDCP contains Ethernet header compression and ciphering(security), for security T1040 SEC component could provide support.

For PDCP Ethernet header compression, ROHC(Robust Header Compression) protocol is often used, please refer to the third party software http://cache.freescale.com/files/32bit/doc/white_paper/HDRCMPWP.pdf.

Have a great day,
Yiping

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