LTE Advanced The 4G Mobile Broadband Technology

Parikh, Jolly; Basu, Anuradha

doi:10.5120/1776-2449

Cited by 28 publications

(15 citation statements)

References 16 publications

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“…It is a flat all-IP system designed to provide much higher packet data rates and significantly lower-latency. It consists of six nodes [19]; the Mobility Management Entity (MME) which manages UEs and their sessions, additionally controls establishment of evolved packet system (EPS) bearers in the selected gateways. The Serving Gateway (S-GW) which acts as the mobility anchor for the user plane during inter-eNB handovers, as well manages and stores UE contexts such as parameters of the IP bearer service and network internal routing information in addition to routing data packets between the P-GW and the E-UTRAN.…”

Section: G Architecturementioning

confidence: 99%

A first look on the effects and mitigation of VoIP SPIT flooding in 4G mobile networks

Bou‐Harb

Debbabi

Assi

2012

2012 IEEE International Conference on Communications (ICC)

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The fourth generation of mobile networks is considered a technology-opportunistic and user-centric system. Part of its new architecture, 4G networks will implement an evolved packet core. Although this will provide various critical advantages, it will however expose telecom networks to serious IP-based attacks. One often adopted solution to mitigate such attacks is based on a centralized security architecture. This centralized approach nonetheless, requires large processing resources to handle large amount of traffic, which may result in a significant over dimensioning problem in the centralized nodes causing this approach to fail from achieving its security task. In this paper, we primarily contribute by presenting a first look on the DoS effects of VoIP SPIT flooding on 4G mobile networks. We further contribute by proposing a distributed architecture on the mobile network infrastructure that is secure, efficient and cost-effective.

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Section: G Architecturementioning

confidence: 99%

A first look on the effects and mitigation of VoIP SPIT flooding in 4G mobile networks

Bou‐Harb

Debbabi

Assi

2012

2012 IEEE International Conference on Communications (ICC)

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“…Recently, the Software-Defined Network (SDN) plays an important role because of its flexibility and ease of transportation. Worldwide Interoperability for Microwave Access (WiMAX) [1] or Global Interoperability for Microwave Access is the promising Fourth Generation (4G) [2] network to meet the needs of customers. It is a telecommunication technology that it provides softwaredefined data for several distances from a point-to-point links to all cell-type accesses, that it allows the connection between mobile and fixed networks.…”

Section: Introductionmentioning

confidence: 99%

Improvement of the Vertical Handover Decision and Quality of Service in Heterogeneous Wireless Networks using Software Defined Network

Laassiri¹,

Moughit²

2018

ijacsa

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The development of wireless networks brings people great convenience. More state-of-the-art communication protocols of wireless networks are getting mature. People attach more importance to the connections between heterogeneous wireless networks as well as the transparency of transmission quality guarantees. Wireless networks are an emerging solution based on users' access to information and services, regardless of their geographic location. The success of these networks in recent years has generated great interest from individuals, businesses and industry. Although there are several access technologies available to the user such as IEEE standards (802.11, and 802.16).SDN is a new network paradigm used to simplify network management, reducing the complexity of network technology. The following work aims to expose a simulation implemented under OMNeT 4.6 ++, to improve the Handover performance between two technologies WiFi and WiMAX. This paper proposes a decision algorithm for a heterogeneous vertical handover between WiFi access points and WiMAX network. The inputs to the algorithm are WiFi RSS, bit rate, jitter, and estimated TCP end-to-end delay.

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“…In contrast, the source in traditional systems sends signal to the destination directly via one hop. Among different relaying B Yulin Zhou Yulin.zhou@warwick.ac.uk Yunfei Chen Yunfei.Chen@warwick.ac.uk 1 School of Engineering, University of Warwick, Coventry CV4 7AL, UK protocols, amplify-and-forward (AF) is a simple one, where the relay receives the signal from the source and then amplifies this signal and forwards it to the destination without any further processing. Thus, AF relays have short delays.…”

Section: Introductionmentioning

confidence: 99%

“…For instance, rate adaptation needs SNR information. Also, SNR knowledge is required in power control for code-division multiple-access systems, link adaptation for adaptive modulation and coding systems, and iterative decoding for "turbo" and low-density parity-check (LDPC) codes [1], in conventional system as well as in [2][3][4][5] for relaying systems where authors analysed the decode-and-forward (DF) and AF performances in two-way relaying or multi-way relay networks. Nonetheless, these works assumed perfect SNR knowledge and did not consider SNR estimation or SNR error.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of end-to-end SNR estimators for AF relaying

Zhou

Chen

2017

Telecommun Syst

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Many existing signal-to-noise ratio (SNR) estimators were designed and evaluated for conventional onehop communications systems. However, for a relaying system, it is the end-to-end SNR that determines the system performance. In this paper, we will fill this gap by evaluating the performances of the existing SNR estimators in a dual-hop relaying system used for each hop. The probability density functions of the SNR estimators are first derived, whose parameters are fitted as functions of the sample size and the true value of SNR. Using them, the cumulative distribution functions of the end-to-end SNR and the bit error rate performance for a relaying system are derived. Numerical results show that the squared signal-to-noise variance estimator has the best performance for small SNRs and the second-order fourth-order moments estimator has the best performance for large SNRs, while the signal-to-variation ratio estimator has the worst performance, among the existing SNR estimators, for AF relaying systems.

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LTE Advanced The 4G Mobile Broadband Technology

Cited by 28 publications

References 16 publications

A first look on the effects and mitigation of VoIP SPIT flooding in 4G mobile networks

A first look on the effects and mitigation of VoIP SPIT flooding in 4G mobile networks

Improvement of the Vertical Handover Decision and Quality of Service in Heterogeneous Wireless Networks using Software Defined Network

Performance analysis of end-to-end SNR estimators for AF relaying

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