Affiliation:
1. Department of Information and Communication Systems Engineering, University of the Aegean, Samos, Greece
2. Computer Technology Institute, Kazantzaki, Greece
3. Department of Information and Communication Systems Engineering University of the Aegean, Samos, Greece
Abstract
The continuous increase in mobile data traffic creates the need for radical innovations in the mobile broadband system design. Heterogeneous networks (HetNets) deployment paradigm is an emerging research trend considered as the most significant aspect for meeting the mobile data challenge, mainly by proposing spectral efficiency enhancements and cell capacity gains from an overall system perspective. Two are the main challenges that dense small cell networks are facing: a) various types of interference mainly caused by unplanned deployments, and b) limited and Quality of Service (QoS)-unreliable wired backhaul links. In this paper, the authors propose a model where femtocells' and relays' complementary characteristics are effectively exploited into femto-relays. More specifically, the authors describe four main functionalities of this model: a) interference protection, b) two-fold backhaul alternatives (i.e. wired and wireless backhaul), c) opportunistic femto-relay selection, and d) full-duplex in-band relaying. To evaluate the anticipated technical impact of the proposed model, targeted simulation results are presented for a campus topology where femto-relays are compared with classic femtocells. Finally, related open issues, such as signaling overheads management, context-aware resource management, and business logic aspects are presented, with emphasis on the femto-relay's real market penetration opportunities in the mid and long-term future.
Subject
Industrial and Manufacturing Engineering,Metals and Alloys,Strategy and Management,Mechanical Engineering
Reference16 articles.
1. Enabling next generation small cells through femtorelays
2. Cooperative Communications with Outage-Optimal Opportunistic Relaying
3. GPP, Technical Specifications Group Radio Access Network. (2010). Evolved Universal Terrestrial Radio Access (E-UTRA), Further advancements for E-UTRA physical layer aspects. 3GPP TR 36.814, V9.0.0, Release 9.
4. Enabling small cell deployment with HetNet
5. Relaying operation in 3GPP LTE: challenges and solutions
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献