Open AccessOptimal joint RAN selection and resource allocation strategy in HetNet under Co-channel and user centric deployment
Author(s) -
Juan Carlos Montoya,
Natalia Gaviria
Publication year - 2019
Publication title -
dyna
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.164
H-Index - 18
eISSN - 2346-2183
pISSN - 0012-7353
DOI - 10.15446/dyna.v86n208.74364
Subject(s) - computer science , handover , heterogeneous network , resource allocation , channel (broadcasting) , computer network , software deployment , telecommunications link , session (web analytics) , selection (genetic algorithm) , resource (disambiguation) , channel allocation schemes , telecommunications , wireless , wireless network , artificial intelligence , world wide web , operating system
In this article, a joint Radio Access Network selection strategy and a sub-channel resource allocation scheme are introduced, where the downlink of a two-tier HetNet system is deployed in a co-channel deployment. With this scenario in mind, a Semi Markovian Decision Process based-model is proposed to find an optimal policy for user association the channel allocation, where the long-term expected reward is maximized. For the proposed strategy, the sub-channel allocation is only considered for those new and handoff petitions that potentially can be allocated in one of the SCs. In addition, with the aim to contribute to the enhancement of the overall usage of radio resources, a traffic offloading process is considered at the departure of the sessions. In order to motivate the session offloading from the MC to the SCs at departure times, we have defined that two sub-channels will be allocated in the SC for each offloaded session. Analytical results quantify and show the effectiveness of the proposed strategy.