Results 231 to 240 of about 6,378,755 (279)

Heterogeneous Cellular Network Models With Dependence

IEEE Journal on Selected Areas in Communications, 2015
Due to its tractability, a multitier model of mutually independent Poisson point processes (PPPs) for heterogeneous cellular networks (HCNs) has recently been attracting much attention. However, in reality, the locations of the BSs, within each tier and across tiers, are not fully independent. Accordingly, in this paper, we propose two HCN models with
Martin Haenggi, Na Deng, Wuyang Zhou
exaly   +2 more sources

Spatiotemporal Cooperation in Heterogeneous Cellular Networks

IEEE Journal on Selected Areas in Communications, 2015
This paper studies downlink communication in a heterogeneous cellular network where a set of geographically separated base stations (BSs) cooperates in transmitting data to a common receiver. If a decoding error occurs, data is cooperatively retransmitted by a possibly different set of BSs, such that the receiver can benefit from spatiotemporal BS ...
Gaurav Nigam, Paolo Minero, Martin Haenggi   +2 more
openaire   +2 more sources

Timely throughput of heterogeneous cellular networks

2015 IEEE International Conference on Communications (ICC), 2015
Network densification via deploying dense small cells is one of the dominant evolutions towards future cellular network to increase spectrum efficiency. Packet transmission delay and reliability in the resultant interference-limited heterogeneous cellular network (HCN) are essential performance metrics for system design.
Gong-Zheng Zhang, Aiping Huang, Tony Q. S. Quek, Hangguan Shan   +3 more
openaire   +1 more source

Carrier aggregation in heterogeneous cellular networks

2013 IEEE International Conference on Communications (ICC), 2013
Heterogeneous networks (HetNets) and carrier aggregation (CA) are two distinct features of next-generation cellular networks. Small cells in HetNets are vital for data off-loading and can significantly improve area and cell edge spectral efficiency compared to using just macrocells.
Xingqin Lin, Jeffrey G. Andrews, Rapeepat Ratasuk, Bishwarup Mondal, Amitava Ghosh   +4 more
openaire   +2 more sources

Delay analysis of heterogeneous cellular networks

2015 IEEE 16th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), 2015
Due to a wider range of services in future heterogeneous cellular network (HCN), packet transmission delay becomes a more essential performance metric for system design. In this paper, we propose an analytical framework to derive the delay performance of HCN in terms of local delay, by modeling the locations of base stations (BSs) in HCN as ...
Gong-Zheng Zhang, Aiping Huang, Tony Q. S. Quek, Hangguan Shan   +3 more
openaire   +1 more source

Energy Efficient Heterogeneous Cellular Networks

IEEE Journal on Selected Areas in Communications, 2013
With the exponential increase in mobile internet traffic driven by a new generation of wireless devices, future cellular networks face a great challenge to meet this overwhelming demand of network capacity. At the same time, the demand for higher data rates and the ever-increasing number of wireless users led to rapid increases in power consumption and
Yong Sheng Soh, Tony Q. S. Quek, Marios Kountouris, Hyundong Shin   +3 more
openaire   +2 more sources

Capacity growth of heterogeneous cellular networks

Bell Labs Technical Journal, 2013
Heterogeneous cellular networks are composed of a mixture of macro and small (pico) cells embedded in the macro network. We assume uniform traffic for simplicity, and study the scaling of area spectral efficiencies (ASEs) as pico densities are increased, optimizing over transmit power and cell association bias.
Jonathan Ling, Dmitry Chizhik, Chung Shue Chen, Reinaldo A. Valenzuela   +3 more
openaire   +2 more sources

Cooperative retransmission in heterogeneous cellular networks

2014 IEEE Global Communications Conference, 2014
This paper studies spatiotemporal cooperation between base stations in the presence of interference in a heterogeneous cellular network. The focus of the paper is the cooperative retransmission scenario, where a set of randomly located base stations that are selected based on their average received powers, possibly belonging to different network tiers,
Gaurav Nigam, Paolo Minero, Martin Haenggi   +2 more
openaire   +1 more source

Load Distribution in Heterogeneous Cellular Networks

IEEE Communications Letters, 2014
This letter provides the distributions on the association region of a small-cell BS (sBS) and that of a macro-cell BS (mBS) in a two-tier heterogeneous cellular network (HCN) as functions of the power and density ratios between tiers. Computer simulation results confirm that the proposed distributions are quite accurate for a wide range of network ...
Young Jin Sang, Kwang Soon Kim
openaire   +1 more source