On the Effects of Subpacketization in Content-Centric Mobile Networks SCIE SCOPUS

Cited 5 time in WEB OF SCIENCE Cited 7 time in Scopus
Title
On the Effects of Subpacketization in Content-Centric Mobile Networks
Author(s)
Malik, Adeel; Lim, Sung Hoon; Shin, Won-Yong
Publication Year
2018-08
Abstract
A large-scale content-centric mobile ad hoc network employing subpacketization is studied in which each mobile node having finite-size cache moves according to the reshuffling mobility model and requests a content object from the library independently at random according to the Zipf popularity distribution. Instead of assuming that one content object is transferred in a single time slot, we consider a more challenging scenario where the size of each content object is considerably large and thus only a subpacket of a file can be delivered during one time slot, which is motivated by a fast mobility scenario. Under our mobility model, we consider a single-hop-based content delivery and characterize the fundamental tradeoffs between throughput and delay. The order-optimal throughputdelay tradeoff is analyzed by presenting the following two content reception strategies: the sequential reception for uncoded caching and the random reception for maximum distance separable (MDS)-coded caching. We also perform numerical evaluation to validate our analytical results. In particular, we conduct performance comparisons between the uncoded caching and the MDS-coded caching strategies by identifying the regimes in which the performance difference between the two caching strategies becomes prominent with respect to system parameters such as the Zipf exponent and the number of subpackets. In addition, we extend our study to the random walk mobility scenario and show that our main results are essentially the same as those in the reshuffling mobility model.
ISSN
0733-8716
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/862
DOI
10.1109/JSAC.2018.2844616
Bibliographic Citation
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, v.36, no.8, pp.1721 - 1736, 2018
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Subject
HYBRID WIRELESS NETWORKS; AD-HOC NETWORKS; CAPACITY; THROUGHPUT; DELIVERY
Keywords
Caching; MDS coding; mobile network; subpacketization; throughput-delay trade-off
Type
Article
Language
English
Document Type
Article
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
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