I have a customer that need to transport eCPRI over a point-to-point link using PTP670/700. I was searching for something that could help me know about some implementation, but without success. IEEE 1588v2 is supported by radios, but there is no information about the other. I think that if it is important for PTP radios can support this RoE protocol for the major 5G/4G network, to extend their deployment. So, Is there a roadmap to support this or not?
Forgive me if I’m wrong, but doesn’t eCIPRI require like a minimum of of 10gbps of bandwidth which would rule out even being able to use the PTP670/700?
tf3_1710_maiden_ngnm_xran_1.pdf (1.8 MB)
Yes, but the customer uses external device that encapsulate eCPRI over Ethernet in a 5G Nokia Network. So, I suppose that they want to see the possibility not use the external device and use a native support in the PTP radios. I don’t know what CPU or processing that may require and if it is feasible to do it over a PTP link in the same way as the external device they use.
Not an CPRI expert, but everything I’m reading seems to indicate that you’d need a minimum of 10gbps or 100gbps of full-duplex ethernet transport in order to satisfy the requirements.
The PTP670 can at best push 450mbps half duplex (same with PTP700). I really doubt these radios would be anywhere close be being able to push enough bandwidth to satisfy even the lightest eCPRI demands.
EDIT: If eCPRI allows for you to break it up to use multiple transports, I guess that you could use 44x PTP670 links to aggregate the 20+gbps of traffic needed to support eCPRI.
From everything I’ve read, the whole point of RoE is to allow CPRI over cheap commodity ethernet products thus reducing backhaul costs. So RoE is being designed to run over that equipment, not the other way around.