Different network applications may have different delay requirements. How to evaluate the delay performance numerically is important for network design. Although the delay performances of random scheduling (RS) and round robin (RR) are known in ...

We propose an analytical model to evaluate the performance of NOMA-based slotted ALOHA for mMTC under the assumption that base stations and devices are distributed according to mutually independent stationary point processes. For the NOMA, we consider a ...

The concept of pulse-coupled oscillators for self-organized synchronization has been applied to wireless systems. Putting theory into practice, however, faces certain obstacles, particularly in radio technologies that cannot implement pulses but use ...

We propose a realistic film grain rendering algorithm based on statistics derived analytically from a physics-based Boolean model that Newson et al. adopted for Monte Carlo simulations of film grain. We also propose formulas for estimation of the model ...

Mobile ad hoc networks (MANETs) represent a class of important network models for supporting various critical applications, while the security breach due to eavesdropping attacks has been a critical issue. This study investigates the security issue of ...

Stochastic geometry is emerging as tractable solution and attractive approach to evaluate the performance of 5G heterogeneous network (5G‐Hetnet) such as coverage, outage and rate probability. The base stations (BSs) and fading distribution in 5G‐Hetnet ...

The need to maximise energy efficiency (EE) for device‐to‐device (D2D) communication has become an urgent necessity for the fifth‐generation wireless networks. In this study, the power allocation problem is considered for the cellular system underlaid ...

In this paper, we consider two types of low-power wide area network (LPWAN): LoRa wide area network (LoRaWAN) and narrow-band internet of things (NBIoT) network. We first propose a framework to calculate the average number of retransmissions in LoRaWAN ...

This study investigates a hybrid wireless communication network consisting of both regular cellular users and device‐to‐device (D2D) users. A generalised uplink model is developed. The model is based on stochastic geometry and encompasses several new ...

Millimetre‐wave (mmWave) communication is a key technology for future cellular networks. However, mmWave signals may be limited in coverage since they are susceptible to blockages. In order to mitigate blockages effect and enhance the coverage probability,...

In this paper we present a simple, stochastic-geometric model of a wireless access network exploiting the LoRA (Long Range) protocol, which is a non-expensive technology allowing for long-range, single-hop connectivity for the Internet of Things. We ...

A novel mth best average biased received power (ABRP) user association (UA) scheme is proposed for K‐tier heterogeneous networks, where a user is associated with the closest base station (BS) of the kth tier having the mth strongest ABRP, k+1,2,…,K. By ...

Base station (BS) cooperation has been regarded as an effective solution to improve network coverage and throughput in next-generation wireless systems. However, it also introduces more complicated handoff patterns, which may potentially degrade user ...

Owing to the irregular deployment of different types of base stations (BSs), cellular networks are now becoming more and more complex. In this study, a tractable and accurate framework based on hybrid model is proposed for heterogeneous cellular ...

The authors propose an adaptive cell‐breathing (ACB) technique to improve the energy efficiency (EE) of a downlink cellular network consisting of small‐cell base stations (BSs), wherein each BS adaptively adjusts its transmission power such that the ...

Wireless Body Area Networks (WBANs) are expected to influence the traditional medical model by providing aged-care at home and health telemonitoring. In this work, we present a study of coexisting WBANs. Multi-WBANs coexist in a small area in many cases,...

This paper investigates the effect of relay randomness on the end-to-end throughput in multi-hop wireless networks using stochastic geometry. We model the nodes as Poisson Point Processes and calculate the spatial average of the throughput over all ...

In this paper, we study the performance of large-scale cache-enabled device to device (D2D) networks. The mobile helpers(MHs) and the user equipments(UEs) are modeled as two independent homogeneous Poisson pointprocess (HPPP). The UEs can get file from ...

Full‐duplex relay‐assisted device‐to‐device (D2D) communication underlaying fifth generation cellular networks allow devices to exchange information directly and extend coverage via relay strategy. In this study, the authors consider such a scenario, ...

Future nanonetworks are formed by large numbers of autonomous, nano-sized sensors. These are often envisioned to be paired with one or more layers of higher complexity devices, providing access to the external networks. The number of devices sharing the ...