Cell planning in Manhattan environments

Gudmundson, M.

doi:10.1109/vetec.1992.245360

Cited by 52 publications

(19 citation statements)

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“…the full-and the half-square cell plan) [3], [4], [14] is considered. In the full-square cell plan, there is a BS with an omnidirectional antenna located at every other intersection so that each BS covers the full block in all four directions.…”

Section: A Cell Plansmentioning

confidence: 99%

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Comparative study of fade margins with hard and soft handoff in CDMA based microcellular systems

Rojas-Lima

2009

2009 6th International Symposium on Wireless Communication Systems

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In this work, an analytical approach is used to study the quantitative performance regarding the fade margins improvements, as well as cell coverage issues with hard-and soft handoff for the reverse link of a CDMA based microcellular system. To determine the required fade margins for different outage probabilities and different soft handoff scenarios, the Manhattan-like street pattern is considered. Since the analysis presented here involves the comparison of propagation losses among two or more base stations due to macroscopic selection diversity used on the reverse link, the generally accepted two slope propagation model, includes a cross-correlated shadow fading component, which allows taking into consideration the dependence between two shadowing components affecting different propagation paths, since they could experience many of the same obstructions in the path profile as has been observed in field test. From numerical evaluations, it is observed that the shadowing cross-correlation is determinant in the accuracy of handoff analysis and some suggestions regarding the fade margins are proposed for planning CDMA based microcellular systems in Manhattan environments.

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Section: A Cell Plansmentioning

confidence: 99%

“…One reason is that propagation characteristics are a function not only of the propagation exponent, but also of the building and network topology. This propagation environment has low time dispersion, which allows higher data rates [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Comparative study of fade margins with hard and soft handoff in CDMA based microcellular systems

Rojas-Lima

2009

2009 6th International Symposium on Wireless Communication Systems

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“…This information may be included in initial setting of the BS. In addition, an MT can traverse regions with multiple microcell overlap regions, even though this case rarely occurs in the Manhattan microcellular environments [22]. In this case, the MT receives several pilot signals from nearby microcell BSs.…”

Section: A Orst Schemementioning

confidence: 99%

“…To verify the efficiency of the proposed schemes, we perform analysis and simulation for the Manhattan cell model [22]. The cell structure in a Manhattan cell model is shown in Fig.…”

Section: Analysis and Simulationmentioning

confidence: 99%

Macrocell/microcell selection schemes based on a new velocity estimation in multitier cellular system

Chung

Lee

Cho

et al. 2002

IEEE Trans. Veh. Technol.

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Abstract-The Intermational Mobile TelecommunicationsIMT-2000 system uses a microcell concept to provide multimedia services and to support increasing number of users. However, in a microcell system, the number of handoffs is greatly increased. To solve this problem, a multitier cellular structure is proposed, in which high-speed mobile terminals (MTs) are serviced in macrocell and low-speed MTs are serviced in microcell to minimize the number of handoffs. In this system, it is important to precisely estimate the speed of the MT for the correct selection of the macrocell/microcell. We propose two macrocell/microcell selection schemes based on a new velocity estimation method in a multitier cellular system which uses the sojourn time in a microcell overlapping region. The proposed schemes have various advantages such as good performance when MT direction is varying, efficient user allocation to cells, quick velocity estimation capability, easy implementation, and low power consumption. We analyze and simulate the conventional and our proposed schemes in the Manhattan cell model, showing the proposed schemes have better performance than the conventional schemes.

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“…In [97], considering a RWP for UE mobility, expressions for the PDF and the expected value of the sojourn time are derived for homogeneous networks, assuming that the BSs are distributed according to a PPP. The authors in [98] estimated the velocity of a UE in two-tier cellular networks using the sojourn times of the UE, while assuming a classical Manhattan cell model [99]. Despite the earlier work in [11,97,98], fundamental bounds for the accuracy of sojourn-time based UE velocity estimation have not been studied in the literature.…”

Section: Sojourn Time Based Velocity Estimationmentioning

confidence: 99%

Stochastic Geometry Based Analysis of Capacity, Mobility and Energy Efficiency for Dense Heterogeneous Networks

Merwaday¹

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We consider different approaches for capacity enhancement of the network. In the first approach, using stochastic geometry we theoretically analyze time domain inter-cell interference coordination techniques in a two-tier HetNet and optimize the parameters to maximize the capacity of the network. In the second approach, we consider optimization of the locations of aerial bases stations carried by the unmanned aerial vehicles (UAVs) to enhance the capacity of the network for public safety and emergency communications, in case of damaged network infrastructure. In the third approach, we introduce a subsidization scheme for the service providers through which the network capacity can be improved by using regulatory power of the government. Finally, we consider the approach of device-todevice communications and multi-hop transmissions for enhancing the capacity of a network.v Velocity estimation of high speed mobile users is important for effective mobility management in densely deployed small cell networks. In this research, we introduce two novel methods for the velocity estimation of mobile users: handover-count based velocity estimation, and sojourn time based velocity estimation. Using the tools from stochastic geometry and estimation theory, we theoretically analyze the accuracy of the two velocity estimation methods through Cramer-Rao lower bounds (CRLBs).With the dense deployment of small cells, energy efficiency becomes crucial for the sustained operation of wireless networks. In this research, we jointly study the energy efficiency and the spectral efficiency in a two-tier HetNet. We optimize the parameters of inter-cell interference coordination technique and study the trade-offs between the energy efficiency and spectral efficiency of the HetNet.vi

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Cell planning in Manhattan environments

Cited by 52 publications

References 1 publication

Comparative study of fade margins with hard and soft handoff in CDMA based microcellular systems

Comparative study of fade margins with hard and soft handoff in CDMA based microcellular systems

Macrocell/microcell selection schemes based on a new velocity estimation in multitier cellular system

Stochastic Geometry Based Analysis of Capacity, Mobility and Energy Efficiency for Dense Heterogeneous Networks

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