Work Log

Jun 1st Got the host-router-host latency test configuration running, but still need to make sure click is handling all packets. Discussed about data process implementation with Kiran.

Jun 8th Compiled the code for aggregator and segmentor with ACK. Testing it on orbit...

Jun 13th tested: when packets get lost, sender can retransmit those packets.

MobilityFirst vs. Hop protocol

	MobilityFirst	Hop
Signaling	Signal info contained in 1st pkt	separate signaling msg: BSYN
Chunk transfer	Yes, sending data in the unit of chunk	Yes
Bitmap ACK	Yes	Yes
ACK loss handling		waiting for ACK timeouts, resend BSYN
When to ACK	received the end of chunk or whole chunk(?)	received BSYN
What to ACK	bitmap of whole chunk or a portion of chunk	bitmap of whole chunk
Data caching (short-term)	Yes	Yes
Data caching (long-term)	Yes	No
Virtual retransmission		Yes
ACK withholding		Yes
Backpressure control		Yes

Block diagram for chunk transfer and ACK

Sender Receiver