Performant TCP for Low Power Wireless Networks
summary
Implements TCP-LP based on FreeBSD on IEEE 802.15.4 + 6LoWPAN hardware and shows full TCP fits constrained devices (≈32 KB code, ~0.5 KB per connection) with buffers sized to the 2–3 KB bandwidth‑delay product. Uses an adapter duty‑cycle that sends extra data‑requests on TCP setup and randomized link‑layer retry delays to mitigate hidden terminals. Achieves TCP goodput within 25% of theoretical upper bound (5–40× better than prior work) while keeping radio duty cycle ≈2%.
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chapters (15)
- 0:00Intro
- 0:18Low-Power Wireless Personal Area Networks
- 3:30Challenges of Low-Power Networks
- 4:39Low-Power Embedded Devices
- 7:00Implementation of TCP
- 8:49How Many In-Flight Segments?
- 9:35TCP New Reno in a LOWPAN
- 10:39Overview of Techniques
- 12:04Receiver-Initiated Radio Duty Cycle
- 13:15How does Radio Duty Cycle affect TCP?
- 14:42Solution: Adoptive Radio Duty Cycle
- 15:56Mitigating Hidden Terminals
- 16:26Multiple Wireless Hops
- 17:05TCP uses Energy Efficiently
- 18:41Summary
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