Resource allocation in integrated femto–macrocell networks based on location awareness

Kalbkhani, Hashem; Solouk, Vahid; Shayesteh, Mahrokh G.

doi:10.1049/iet-com.2014.0691

Cited by 15 publications

(3 citation statements)

References 35 publications

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“…Dynamic schemes [15][16][17] exhibit more resilience to traffic and interference variation but also have higher signaling overheads and increased complexity, making the static schemes [6,[18][19][20][21] very popular when appropriately provisioned. Such regular grid models make idealistic assumptions and are not practical for realistic network deployments with irregular geometry and complex distributions of diverse access points as obtainable in Hetnets.…”

Section: Related Work and Contributionsmentioning

confidence: 99%

“…Using the above resource allocation mechanism associates performance metrics with the FFR threshold T 0 allowing for design trade-offs in terms of load balancing, increasing peak rate or fairness similar to simulation-based grid models [6,[17][18][19][20].…”

Section: ( )mentioning

confidence: 99%

“…The overall average network sum rate can be derived from using previously derived expressions to be given as; (19) and (20) respectively, while the average UE rates are as earlier defined.…”

Section: Network Sum Ratementioning

confidence: 99%

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Stochastic Geometry Based Framework for Coverage and Rate in Heterogeneous Networks with Sectored Fractional Frequency Reuse

Abdullahi¹,

Liu²,

Mohadeskasaei³

2017

AJNC

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Abstract:Modern day cellular networks are driven by the need to provide ubiquitous connectivity with very high spectral efficiency to both indoor and outdoor users, hence the need to deploy small cells over conventional macrocells in a Heterogeneous Network (Hetnet) deployment. To alleviate the resulting inter-cell and cross-tier interference, effective intercell interference coordination (ICIC) schemes such as Fractional Frequency Reuse (FFR) are employed, and have been widely studied in perfect geometry network scenarios which are too idealistic and not easily adaptable to the complexity of Hetnets. This work provides an analytical framework for the performance of such FFR schemes in Hetnets with antenna sectorization employed at the macro tier, by leveraging stochastic geometry tools to model base station locations of both macro and femto tiers using the Poisson Point Process (PPP). We study the effects of varying system parameters and consider cross-tier femto interference commonly ignored in many analytical works in literature. Furthermore, the femtocells employ a sensing algorithm to minimize spectrum sharing with macro users in close proximity, especially at the transition areas of center and edge region where cross-tier interference could be monumental. Numerical simulations are used to evaluate performance of the proposed framework in terms of coverage probability and average user rate, and results are compared with traditional FFR schemes and the No-FFR deployment. To the best of the author's knowledge, this is the first analytical framework characterizing sectored-FFR schemes using stochastic geometry tools in Hetnets.

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