Paper Info
Title
Location-Aware Cross-Tier Coordinated Multipoint Transmission in Two-Tier Cellular Networks
Abstract
Multi-tier cellular networks are considered as an effective solution to enhance the coverage and data rate offered by cellular systems. In a multi-tier network, high power base stations (BSs) such as macro BSs are overlaid by lower power small cells such as femtocells and/or picocells. However, co-channel deployment of multiple tiers of BSs gives rise to the problem of cross-tier interference that significantly impacts the performance of wireless networks. Multicell cooperation techniques, such as coordinated multipoint (CoMP) transmission, have been proposed as a promising solution to mitigate the impact of the cross-tier interference in multi-tier networks. In this paper, we propose a novel scheme for Location-Aware Cross-Tier Cooperation (LA-CTC) between BSs in different tiers for downlink CoMP transmission in two-tier cellular networks. On one hand, the proposed scheme only uses CoMP transmission to enhance the performance of the users who suffer from high cross-tier interference due to the co-channel deployment of small cells such as picocells. On the other hand, users with good signal-to-interference-plus-noise ratio (SINR) conditions are served directly by a single BS from any of the two tiers. Thus, the data exchange between the cooperating BSs over the backhaul network can be reduced when compared to the traditional CoMP transmission scheme. We use tools from stochastic geometry to quantify the performance gains obtained by using the proposed scheme in terms of outage probability, achievable data rate, and load per BS. We compare the performance of the proposed scheme with that of other schemes in the literature such as the schemes which use cooperation to serve all users and schemes that use range expansion to offload users to the small cell tier.
Year
DOI
Venue
2014
10.1109/TWC.2014.2348565
Wireless Communications, IEEE Transactions  
Keywords
Field
DocType
cochannel interference,femtocellular radio,picocellular radio,wireless channels,CoMP transmission,LA-CTC,SINR,backhaul network,cochannel deployment,cross-tier coordinated multipoint transmission,cross-tier interference,data exchange,femtocells,high power base stations,location-aware cross-tier cooperation,location-aware multipoint transmission,multicell cooperation,multitier network,outage probability,picocells,signal-to-interference-plus-noise ratio,stochastic geometry,two-tier cellular networks,wireless networks,CoMP,Multi-tier cellular networks,multicell cooperation,outage probability,range expansion,stochastic geometry
Stochastic geometry,Base station,Wireless network,Femtocell,Backhaul (telecommunications),Computer network,Interference (wave propagation),Cellular network,Mathematics,Telecommunications link
Journal
Volume
Issue
ISSN
13
11
1536-1276
Citations 
PageRank 
References 
39
1.21
16
Authors
2
Name
Order
Citations
PageRank
Ahmed Hamdi Sakr12039.40
Ekram Hossain28586453.41