The Use of Redundant Packets in Slotted-Aloha-Type Random-Access Systems
MASSACHUSETTS INST OF TECH CAMBRIDGE ELECTRONIC SYSTEMS LAB
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Slotted-Aloha-type systems are considered in which each transmission is a super-packet consisting of several data packets and some redundant packets in a fixed temporal pattern. Two results are obtained. The first, a negative result, shows that such redundancy, no matter how cleverly exploited, cannot increase the system throughput above that for irredundant transmissions. The second, a positive result, shows that, when the temporal pattern is determined by a simple difference set, average data packet delay can be reduced over an interesting range of throughput values.
- Non-Radio Communications