Communications play an important role during public safety operations. Since the current communication technologies heavily rely on backbone network, failure of base stations (BSs) due to natural disasters or malevolent attacks causes difficulties for and emergency communications. Recently, use unmanned aerial vehicles (UAVs) such as quadcopters gliders have gained attention in They can be used (UABSs), which deployed rapidly a part heterogeneous network architecture. However, their mobile...

Communications play an important role during public-safety operations. Because the current communication technologies heavily rely on backbone network, failure of base stations (BSs) due to natural disasters or malevolent attacks causes difficulties for and emergency communications. Recently, use unmanned aerial vehicles (UAVs), such as quadcopters gliders, has gained attention in publicsafety communications (PSCs). They can be operated BSs (UABSs), which deployed rapidly a part...

Challenged Networks (CNs) are characterized by frequent varying network conditions and intermittent connectivity. In general, CNs emerge in different scenarios including the disaster emergency situations when traditional cellular infrastructure is dysfunctional or unavailable as well undeserved areas such rural developing regions. This paper aims to evaluate performance of a mobile edge adopting Unmanned Aerial Vehicles (UAVs) for CN scenarios. Specifically, we assume that UAVs can host...

In wireless cellular networks with densely deployed base stations, knowing the velocities of mobile devices is key to avoiding call drops and improving quality service user equipments (UEs). A simple efficient way estimate a UE's velocity by counting number handovers made UE during predefined time window. Indeed, handover-count based mobility state detection has been standardized since long term evolution (LTE) Release-8 specifications. The increasing density small cells in can help accurate...

Abstract The use of reduced power subframes in LTE Rel. 11 can improve the capacity heterogeneous networks (HetNets) while also providing interference coordination to picocell-edge users. However, order obtain maximum benefits from subframes, setting key system parameters, such as amount reduction, carries critical importance. Using stochastic geometry, this paper lays down a theoretical foundation for performance evaluation HetNets with and range expansion bias. analytic expressions average...

Device-to-device (D2D) communication as an underlay to cellular networks has gained increasing popularity a technology component LTE-Advanced. Through D2D communications, user equipments (UEs) in close proximity each other, may communicate directly instead of through the eNodeB. This helps achieve better performance than that offered via eNodeB (two-hops) by offloading resources, and enables new types services. paper provides overview agreements 3rd Generation Partnership Project (3GPP) Long...

Due to the increasing density of small cells, mobility management in heterogeneous networks has become a challenging task. One key challenge facing development advanced techniques is accurate estimation users' velocity. simple way estimate user's velocity via use sojourn time samples. In this letter, Cramer-Rao lower bound (CRLB) for time-based analyzed. Stochastic geometry used spatial modeling and CRLB derived using tools from theory. An asymptotically unbiased estimator also derived. Our...

In wireless networks, mobile nodes with limited power budget must rely on multi-hop transmissions so as to achieve reliable communication a distant peer device. Hence, it is of paramount importance study the characteristics transmission over multihop links and its benefits single-hop communication. this work, simulator developed assess bit error rate (BER) performance multi-hop, multi-carrier systems. The channel model used in based statistics obtained through indoor measurements performed...

Until recently, spectral efficiency (SE) has been considered as the major key performance indicator of cellular networks. Nowadays, green evolution is becoming a trend and telecom industry concerned about energy costs carbon footprint their network infrastructure. These concerns will get more critical in future due to increasing base station densities. In such scenario, minimising consumption while maximising data sent users becomes crucial for sustained operation network. this letter,...

The time domain inter-cell interference coordination (eICIC) mechanism specified in LTE Rel. 10 improves the throughput of picocell-edge users by protecting them from macrocell interference. On other hand, it also degrades aggregate capacity because macro base station (MBS) does not transmit data during coordinated subframes (CSFs). MBS transmission at a reduced power level CSFs, which is referred to as FeICIC 11, can improve while causing high picocell users. Using stochastic geometry, this...

Recently, Collective Perception Messages (CPM) that carry additional information about the surrounding environment beyond Basic Safety (BSM) or Cooperative Awareness (CAM) have been proposed to increase situational awareness for Connected and Automated Vehicles (CAV) in Intelligent Transportation Systems. However, blindly trusting perception from neighbors cannot be locally verified is dangerous given safety impact erroneous malicious might have. This paper addresses data trust challenge of...

Industrial Internet of Things (IIoT) use cases have stringent reliability and latency requirements to enable real-time wireless control systems, which are supported by the 5G ultra-reliable low-latency communications (URLLC). However, extremely high quality-of-service (QoS) in URLLC causes huge radio resource consumption low spectral efficiency, thus limiting network capacity terms number devices. applications typically incorporate redundancy their design may not always require extreme QoS...

Poisson Point Process (PPP) models provide important insights for the analysis of heterogeneous networks (HetNets). Recently, several theoretical results which investigate outage and capacity HetNets have been developed based on PPPs. The goal present paper is to exact analytical expressions range expanded interference coordinated HetNets, validate these through well-documented computer simulations. Both simulated are obtained various expansion coordination scenarios, shown good agreement.

The wireless efficiency of the strongly coupled magnetic resonance (SCMR) method greatly depends on Q-factors TX and RX resonators, which in turn are dependent geometrical parameters resonators. This paper analytically derives equations that can be used to design optimal spiral resonators for SCMR systems. In addition, our analysis illustrates under certain conditions globally maximum achieved.

Radio sensing is a key envisioned feature for next-generation wireless systems, allowing the use of communication infrastructure and air interface components to also perceive environment. Enabling efficient radio access network (RAN) resources meet various case requirements primary goal in such systems. This article bridges gap among RAN architecture requirements, along with signal processing techniques realize integration radar into cellular e.g., open (O-RAN) framework. Motivated by O-RAN...

In wireless cellular networks with densely deployed base stations, knowing the velocities of user equipments (UEs) is a key for efficient mobility management. A simple and way to estimate UE's velocity by counting number handovers made UE during predefined time window. Indeed, handover-count based state detection has been standardized since Long Term Evolution (LTE) Release-8 specifications. The increasing density small cells in advantageous, as it can help accurate estimation UE. this...

Extreme densification of base stations is imminent in the next generation cellular networks to meet exponentially increasing demand for mobile data traffic. In such ultra-dense (UDNs), remarkably high inter-cell interference can reduce or even negate gain. On other hand, directional communications significantly bring down levels UDNs. Hence, it importance evaluate network performance UDNs with communications. Through Monte Carlo simulations, this paper analyzes characteristics coverage...

Traditional regulatory methods for spectrum licensing have been recently identified as one of the causes under-utilization valuable radio spectrum. Governmental agencies such Federal Communications Commission (FCC) are seeking ways to remove stringent barriers and facilitate broader access resources. The goal is allow an improved ubiquitous sharing precious between commercial service providers. In this paper, we propose a novel noncooperative game theoretic approach, show how foster more via...

Collective Perception Services (CPS) provided by roadside infrastructure is a promising way to extend the environment perception range of vehicles beyond their embedded sensors. However, sharing perceived lists objects can result in unacceptably high communication overhead, when number large. We propose Layered Costmap based novel protocol enable an overhead-efficient CPS, specifically cases with many objects, such as crowded intersections. demonstrate CARLA-based collaborative autonomous...

The time domain inter-cell interference coordination techniques specified in LTE Rel. 10 standard improves the throughput of picocell-edge users by protecting them from macrocell interference. On other hand, it also degrades aggregate capacity because macro base station (MBS) does not transmit data during certain subframes known as almost blank subframes. MBS transmission using reduced power was standardized 11, which can improve while causing high to nearby picocells. In order get maximum...