Publication: Service migration versus service replication in Multi-access Edge Computing
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2018-08-30
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IEEE
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Abstract
Envisioned low-latency services in 5G, like automated
driving, will rely mainly on Multi-access Edge Computing
(MEC) to reduce the distance, and hence latency, between users
and the remote applications. MEC hosts will be deployed close to
mobile base stations, constituting a highly distributed computing
platform. However, user mobility may raise the need to migrate a
MEC application among MEC hosts to ensure always connecting
users to the optimal server, in terms of geographical proximity,
Quality of Service (QoS), etc. However, service migration may
introduce: (i) latency for users due to the downtime duration;
(ii) cost for the network operator as it consumes bandwidth
to migrate services. One solution could be the use of service
replication, which pro-actively replicates the service to avoid service
migration and ensure low latency access. Service replication
induces cost in terms of storage, though, requiring a careful
study on the number of service to replicate and distribute in
MEC. In this paper, we propose to compare service migration
and service replication via an analytical model. The proposed
model captures the relation between user mobility and service
duration on service replication as well as service migration costs.
The obtained results allow to propose recommendations between
using service migration or service replication according to user
mobility and the number of replicates to use for two types of
service.
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Keywords
Mobile and multi-access edge computing, 5G, Markov chains
Bibliographic citation
Frangoudis, P.A., Ksentini, A. (2018). Service migration versus service replication in Multi-access Edge Computing. Paper submitted in 2018 14th International Wireless Communications & Mobile Computing Conference (IWCMC) (pp. 124-129), Limassol.