Interference management in LTE femtocell systems using an adaptive frequency reuse scheme

Bouras, Christos; Kavourgias, Georgios; Kokkinos, Vasileios; Papazois, Andreas

doi:10.1109/wts.2012.6266120

Cited by 39 publications

(35 citation statements)

References 5 publications

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“…Interference reduction is one of the main concerns in wireless communication in increasing system performance. These has been discussed in [16] proposing frequency reuse mechanisms which maximizes throughput utilizing different combinations of inner cell radius and allocating frequency depending on the position of the users and the femtocells. Considering random number of cognitive radio, path loss, Raleigh fading aggregate interference using Gamma distribution approximation to perfect closed-form moment generating function with an accurate approximation is derived in [17].…”

Section: A Backgroundmentioning

confidence: 99%

Performance Measurement Model of Mobile User Connectivity in Femtocell/Macrocell Networks using Fractional Frequency Re-use Scheme

Anannya¹,

Shourov²

2018

ijacsa

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Abstract-Technologies are traversing to its new dimensions every day. As part of this progression, mobile cellular system is at the summit of its constant advancement. The usage of Femtocells in mobile cellular system has created a massive impact on its architecture. Likewise, the incorporation of femtocells in macrocells for 4G mobile network communication services (like-voice calls, data services, etc.) among mobile stations within few meters has been one of the promising approaches. There is a femto access point (FAP) in Femtocell which handles the authorization of the user around it. Among the three various access methods, FAP allows only the authorized users except the macro cell users in Closed Access Method (CAM). But for Open Access Method (OAM), any type of crossing macrocell user within the radio coverage of femtocell and the femtocell users can get FAP access. To reduce the crosstier interferences OAM is more efficient, because it deals with both type of users within the femtocell coverage. This paper proposes a performance measurement model for mobile connection probability depending on the mobility factor of mobile users and the communication range in femtocell/ macrocell networks. Furthermore, a derivation has been done to get the optimum result from the outage and connectivity probability under different number of femtocells and mobile users. Finally, to maximum the spectral efficiency for the probable frequency allocation, a Fractional Frequency Re-use scheme among the networks has been proposed.

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Section: A Backgroundmentioning

confidence: 99%

Performance Measurement Model of Mobile User Connectivity in Femtocell/Macrocell Networks using Fractional Frequency Re-use Scheme

Anannya¹,

Shourov²

2018

ijacsa

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“…However, the Macrocell throughput is reduced, even though the overall capacity is enhanced. In [23], a self-organizing approach has been proposed. The Femtocell is able to sense the current channel state and tune its sub-channel allocation in order to reduce interference among Femtocells.…”

Section: Related Workmentioning

confidence: 99%

System capacity improvement by on request channel allocation in LTE cellular network

Rezvy

Rahman

Lasebae

et al. 2014

2014 48th Annual Conference on Information Sciences and Systems (CISS)

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Long-term evolution (LTE) femtocells represent a very promising answer to the ever growing bandwidth demand of mobile applications. They can be easily deployed without requiring a centralized planning to provide high data rate connectivity with a limited coverage. Femtocell is low-power, very small and cost effective cellular base station used in indoor environment. However, the impact of Femtocells on the performance of the conventional Macrocell system leads interference problem between Femtocells and pre-existing Macrocells as they share the same licensed frequency spectrum. Frequency Reuse (FR) is an effort of manipulating the frequency resource allocation upon terminal's location to improve system capacity. In this paper, an efficient method to improve system capacity through interference management in the existing Femto Macro two tier networks has been proposed. In the proposed scheme, a novel frequency planning for two tiers cellular networks using frequency reuse technique is used where Macro base stations allocate frequency sub-bands for Femtocells users on-request basis through Femtocells base stations to cancel interference.

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“…This work assumes that the femtocell layer is largely unaffected by macrocellular interference, i.e. some form of interference management is in operation [8], [9].…”

Section: Self Organizing Networkmentioning

confidence: 99%

Parameter Optimization for LTE Handover Using an Advanced SOM Algorithm

Sinclair

Harle

Glover

et al. 2013

2013 IEEE 77th Vehicular Technology Conference (VTC Spring)

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Abstract-A novel approach to enhance the robustness of handovers in LTE femtocells is presented. A modified Self Organizing Map is used to allow femtocells to learn about their specific indoor environment including the locations that have prompted handover requests. Optimized handover parameter values are then used that are specific to these locations. This approach reduces both the number of handover failures and the occurrence of ping-pong handovers. It also improves network efficiency by reducing the signaling overhead. The application of machine learning to this task complies with the plug-and-play functionality that is a requirement of Self Organizing Networks in LTE systems.

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Interference management in LTE femtocell systems using an adaptive frequency reuse scheme

Cited by 39 publications

References 5 publications

Performance Measurement Model of Mobile User Connectivity in Femtocell/Macrocell Networks using Fractional Frequency Re-use Scheme

Performance Measurement Model of Mobile User Connectivity in Femtocell/Macrocell Networks using Fractional Frequency Re-use Scheme

System capacity improvement by on request channel allocation in LTE cellular network

Parameter Optimization for LTE Handover Using an Advanced SOM Algorithm

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