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RSSI Algorithm Based Interference Reduction Technique for LTE Network

Ansari Shahegul, Gulhane Veena

Annals of Computer Science and Information Systems

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2017

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Vol. 10

111--115

EN

Wireless communications networks require 3GPP (Long Term Evolution) technique for gaining highly efficient spectrum and data rates with flexible bandwidth and spectrum allocation. Femtocell is an approach of LTE networks for reducing indoor coverage problems. While, locating macro-cells and femto-cells may found a situation of interference. For reducing this problem, in this paper we propose a Modified Fractional Frequency Reuse (MFFR) technique with Received Signal Strength Indication (RSSI) algorithm. This technique would effectively mitigate the co-channel interference from both interference techniques that is of co tier and cross tier, thus get higher throughput of system.

2

Nature Inspired Techniques for Interference Management in Femtocells: A Survey

Deshmukh Shradha, Madankar Mangala

Annals of Computer Science and Information Systems

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2017

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Vol. 10

157--160

EN

In the wireless communication system the transmitter and receiver close to each other to improve the data rates and capacity. Therefore, the wireless networks are more popular than the traditional wired services. In the wireless networks, to cover cells the low power nodes such as macrocells, picocells, femtocells base stations (BSs) deployed to improve the indoor coverage. The femtocell base station reduces operators operational cost, maintainance and infrastructure. At the time of femtocell deployment, the femtocell base station deal with a number of technical challenges, among those all the interference management is more important. In femtocell network, one femtocell creates the interference to its neighboring femtocells.To deal with interference management challenge number of researchers have suggested different types of solutions. The survey shows that nature inspired metaheuristic algorithm has the powerful impact on interference cancellation and avoidance.This survey paper focuses on bat algorithm for the resource allocation problem in a femtocell.

3

New Trends in Femtocell Backhaul Security

Rohlik M., Vanek T.

Przegląd Elektrotechniczny

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2013

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R. 89, nr 2b

240--244

EN

One of the relatively new services presented by mobile operators is a femtocell. A femtocell is a network located at the residential premises helping to extend the mobile signal to places which are difficult to cover. Furthermore, it enables the mobile operator to provide attractive service to the customer since the femtocell is connected to the mobile operator network using an IP based backhaul link over the public Internet. To ensure appropriate security over the untrustworthy environment, an IPsec tunnel is established between the femtocell access point and the provider’s security gateway located at the core network perimeter. IPsec itself wasn’t originally proposed to carry small voice packets resulting in a redundant overhead. This paper examines other security procedures, such as transport layer security (TLS) and Datagram TLS (DTLS) protocols.

PL

W artykule zaprezentowano porównanie systemów ochrony pakietów danych w sieci komunikacji femtokomórek. W celu nawiązania i zabezpieczenia połączenia zastosowano tu tunelowanie IPsec między bramką operatora, a odbiornikiem, femtokomórką. Testom poddano procedury ochrony w protokołach TLS oraz DTLS.