# Adversarial Multiple Access Channels with Individual Injection Rates

Adversarial Multiple Access Channels with Individual Injection Rates We study deterministic distributed broadcasting in synchronous multiple-access channels. Packets are injected into n nodes by a window-type adversary that is constrained by a window w and injection rates individually assigned to all nodes. We investigate what queue size and packet latency can be achieved with the maximum aggregate injection rate of one packet per round, depending on properties of channels and algorithms. We give a non-adaptive algorithm for channels with collision detection and an adaptive algorithm for channels without collision detection that achieve O ( min ( n + w , w log n ) ) ${\mathcal {O}}(\min (n+w,w\log n))$ packet latency. We show that packet latency has to be either Ω(wmax(1,logw n)), when w ≤ n, or Ω(w + n), when w > n, as a matching lower bound to these algorithms. We develop a non-adaptive algorithm for channels without collision detection that achieves O ( n + w ) ${\mathcal {O}}(n+w)$ queue size and O ( nw ) ${\mathcal {O}}(nw)$ packet latency. This is in contrast with the adversarial model of global injection rates, in which non-adaptive algorithms with bounded packet latency do not exist (Chlebus et al. Distrib. Comput. 22(2), 93–116 2009). Our algorithm avoids collisions produced by simultaneous transmissions; we show that any algorithm with this property must have Ω(n w) packet latency. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Theory of Computing Systems Springer Journals

# Adversarial Multiple Access Channels with Individual Injection Rates

, Volume 61 (3) – Nov 28, 2016
31 pages

Publisher
Springer US
Subject
Computer Science; Theory of Computation
ISSN
1432-4350
eISSN
1433-0490
D.O.I.
10.1007/s00224-016-9725-x
Publisher site
See Article on Publisher Site

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