Abstract:
In this paper, we propose a resource allocation scheme for interference mitigation in heterogeneous networks to simultaneously serve both Macrocell User Equipments (MUEs)...Show MoreNotes: This article was mistakenly omitted from the original submission to IEEE Xplore. It is now included as part of the conference record.
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Abstract:
In this paper, we propose a resource allocation scheme for interference mitigation in heterogeneous networks to simultaneously serve both Macrocell User Equipments (MUEs) and Home User Equipments (HUEs). In the proposed Shadow Chasing scheme, a Home eNB (HeNB) uses Downlink Control Information (DCI) together with ACK/NAK feedback to assign its HUEs the Physical Resource Blocks (PRBs) that are also potentially used by outdoor MUEs. Since the HeNB receives an outdated DCI due to backhaul delay, our Shadow Chasing algorithm (SCA) determines a likelihood metric for each PRB being either vacant or assigned to an outdoor MUE. By dynamically separating MUE and HUE PRB assignments, SCA can control the downlink interference to MUE. Our numerical examples demonstrate effective reduction of probability for PRB assignment collision and MUE interference over random assignment and a DCI based assignment that does not take into account the delay effect nor the ACK/NAK signal.
Notes: This article was mistakenly omitted from the original submission to IEEE Xplore. It is now included as part of the conference record.
Published in: 2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM)
Date of Conference: 18-20 June 2012
Date Added to IEEE Xplore: 18 March 2013
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