DChannel: Accelerating Mobile Applications With Parallel High-bandwidth...
summary
Builds a packet-steering system called DChannel that puts a client on the phone and a proxy in the 5G core to steer IP packets across parallel eMBB and URLLC links, with a reordering buffer and a cost–reward heuristic (alpha ≈ 0.75) to only offload small, latency-sensitive packets. Trace-driven and live 5G experiments (Chicago and campus traces, URLLC emulated) show web and app responsiveness improves 16–40%, despite URLLC is 1% bandwidth of eMBB, and it outperforms MPTCP and ASAP.
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chapters (11)
- 0:00Intro
- 0:32Low latency is critical
- 1:10What does current 5G latency look like?
- 1:39Channels (services) tradeoff: Latency vs. Throughput
- 3:08Breaking through the tradeoff barrier
- 5:36DChannel architecture for 5G
- 6:28DChannel design decision
- 7:47Steering granularity (Network-level)
- 12:56Implications of cost-rewards heuristics
- 14:31Experimental setup: network emulation
- 16:31Microbenchmark: Effect of transfer size
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