The Next Generation Mobile Wireless Cellular Networks – 4G and Beyond

Agarwal, Arun; Agarwal, Kabita

doi:10.12691/ajeee-2-3-6

Cited by 36 publications

(16 citation statements)

References 4 publications

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“…6 shows the comparison result of the throughput performance for existing and EVS-TCP Reno-VoIP methods. The performance of the EVS-TCP Reno-VoIP method provides high throughput compared to existing methods such as EVS [12], G.711 [15] and SDSS [17]. In existing methods, the transmitter doesn't deliver packets properly due to congestion.…”

Section: Packet Lossmentioning

confidence: 99%

“…8 shows comparable performance of jitter of existing and EVS-TCP Reno-VoIP methods. In existing [12], [15] and [17], an increasing jitter shows that the packets arrive at varying delay at the receiver, it reflects adversely on the perceived quality. Here, every packet contains a voice sample sent from the sender.…”

Section: Packet Lossmentioning

confidence: 99%

“…In the Figs. 6, 7, 8, and 9, the comparative analysis is done between the proposed EVS-TCP Reno-VoIP method and existing methods EVS codec [12], G.723 [15], CQA [16] and SDSS [17]. Here, the EVS-TCP Reno-VoIP method is averagely improved 2.845% of the throughput, 0.0003% of the delay, 0.006% of the jitter and 0.011% of the packet loss compared to the existing methods.…”

Section: Packet Lossmentioning

confidence: 99%

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Enhanced Voice Service (EVS) Codec Using TCP Reno in Voice over Internet Protocol in LTE Network

Lonkar¹,

Reddy²

2019

IJIES

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Voice over Internet protocol (VoIP) is one of the online streaming method to provide voice communication that is used in the organization voice operation or conference call. In recent years, researcher developed several methods for improving the voice quality; but it still faces some problems of high jitter, delay and low throughput. In this paper, a VoIP is introduced to enable voice calls on Long Term Evolution (LTE). The Enhanced Voice Service (EVS)-Transmission Control Protocol (TCP) Reno-VoIP (EVS-TCP Reno-VoIP) method is introduced for enhancing the voice quality on LTE network. The EVS codec is used for improving the voice service and TCP Reno is used to avoid voice congestion in the LTE network. The testbed experiments on voice based skype application is implemented for LTE network. The network traffic is computed using the Jperf software. The Quality of Service (QoS) of the VoIP over LTE is analysed in Network Simulator 2 (NS2). The multiple scenarios were simulated to compute and analyse the performances in terms of an end to end delay, throughput, jitter and packet loss. The simulation results showed that EVS-TCP Reno-VoIP method has improved 2-3.5% of network performance compared to existing methods such as EVS codec, G-11, G-723 and SDSS.

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Section: Packet Lossmentioning

confidence: 99%

Section: Packet Lossmentioning

confidence: 99%

Section: Packet Lossmentioning

confidence: 99%

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Enhanced Voice Service (EVS) Codec Using TCP Reno in Voice over Internet Protocol in LTE Network

Lonkar¹,

Reddy²

2019

IJIES

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“…Although, WiMAX offers large municipality coverage supporting class QoS requirements. On the other hand, WiMAX is generally used in licensed spectrum [47].…”

Section: Ieee 80216 Standardmentioning

confidence: 99%

Wireless Technologies for IoT in Smart Cities

García

Jiménez

Taha

et al. 2018

NPA

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As cities continue to grow, numerous initiatives for Smart Cities are being conducted. The concept of Smart City encompasses several concepts being governance, economy, management, infrastructure, technology and people. This means that a Smart City can have different communication needs. Wireless technologies such as WiFi, ZigBee, Bluetooth, WiMax, 4G or LTE (Long Term Evolution) have presented themselves as solutions to the communication needs of Smart City initiatives. However, as most of them employ unlicensed bands, interference and coexistence problems are increasing. In this paper, the wireless technologies available nowadays for IoT (Internet of Things) in Smart Cities are presented. Our contribution is a review of wireless technologies, their comparison and the problems that difficult coexistence among them. In order to do so, the characteristics and adequacy of wireless technologies to each domain are considered. The problems derived of over-crowded unlicensed spectrum and coexistence difficulties among each technology are discussed as well. Finally, power consumption concerns are addressed. 24 As the initiatives taken to turn a city into a smart city may be varied and have different requirements, employing one unified technology throughout the city may not be efficient. Although wired solutions present a reliable channel to transmit data, the cost of deploying a wired network that connects all devices is extremely high and the result would be considerably inefficient. Wireless technologies have presented themselves as a solution to the rapid growth of devices that are connected to the network as well as the increasing demand of services that allow monitoring cities. IoT is gaining rapid popularity and it is being utilized for transport, health, environment, animal monitoring and smart metering applications [4,5]. Wireless Sensor Networks (WSN) are being employed all over the world as a low-cost and low-energy consuming method to provide a communication mechanism [6]. However, wireless technologies are varied and their utilization should be considered depending on the application. Traffic type, distance, energy consumption or number of nodes are some of the factors that should be considered when deciding how to transmit the gathered data. Moreover, the abuse of wireless technologies may derive in some problems.The majority of the wireless technologies available nowadays employ the 2.4 GHz ISM (Industrial, Scientific and Medical) band. It has not been a great problem until wireless devices started growing at a fast pace. Cable connections between computers and peripherals are being replaced by technologies such as Bluetooth [7]. It is also being employed by home automation systems or telemedicine applications [8]. ZigBee is popular for monitoring systems where a great number of nodes and low energy consumption are required. Services that require interaction with humans are usually utilized with PCs, smartphones or tablets, such as Ambient Assisted Living (AAL) and healthcare systems, and employ WiFi or mo...

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“…The LTE system provides many benefits that include speed, efficiency bandwidth utility, etc.. One of the major problems in wireless networks is the restriction of frequency spectrum [2]. Spectral efficiency is reaching its limits; it is essential to increase the node density, which can improve the performance of network capacity.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Interference Cancellation to Mitigate the CRS Interference in LTE/LTE-A Heterogeneous Networks

Shibu¹,

Saminadan²

2017

IJET

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-In the recent years, heterogeneous network (HetNet) is used to improve the spectral efficiency and network capacity of Long Term Evolution-Advanced (LTE-A). Although, it has huge traffic congestion due to numerous numbers of mobile users and data terminals, leads to problems of cooperation between Macro-cell and Pico-cells. One of the major interference sources in LTE-A is Common Reference Signal (CRS) which is transmitted by neighboring cells across the entire frequency band. There are two categories of CRS interference, such as non-colliding CRS and colliding CRS interference. So, these type CRS interferences become the restricting factor for achieving higher throughput in downlink LTE-A. In this paper, an efficient equalizer for mitigating non-colliding CRS and Enhanced Space Alternating Generalized Expectation-Maximization (ESAGE) with a maximum aposteriori (MAP) criterion for colliding CRS interference cancellation is used. The simulation outcomes show that the proposed efficient equalizer and ESAGE-MAP provides better CRS interference cancellation than existing techniques.

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The Next Generation Mobile Wireless Cellular Networks – 4G and Beyond

Cited by 36 publications

References 4 publications

Enhanced Voice Service (EVS) Codec Using TCP Reno in Voice over Internet Protocol in LTE Network

Enhanced Voice Service (EVS) Codec Using TCP Reno in Voice over Internet Protocol in LTE Network

Wireless Technologies for IoT in Smart Cities

Enhanced Interference Cancellation to Mitigate the CRS Interference in LTE/LTE-A Heterogeneous Networks

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