This communication presents the design of 1 bit coding engineered reflector for wideband monostatic/bistatic radar cross section (RCS) reduction under a wide angle incidence by redirecting backscattered electromagnetic (EM) energies into and countless angles. The proposed surface can achieve an excellent RCS performance more than 10 dB over frequency range from 60 to 120 GHz angles up 75°. is achieved designing anisotropic polarization rotator unit cell with relative conversion bandwidth...

Vehicular Edge Computing (VEC) networks have emerged as an efficient paradigm to support a range of computation-intensive applications. However, potential eavesdropping attacks pose significant threat massive confidential information. Furthermore, the rapid growth Intelligent Connected Vehicles (ICVs) intensifies scarcity communication and computational resources, generating urgent need for improving resource utilization. Since both security concerns limitation influence decisions on...

Device-to-Device (D2D) communication underlaying macro-small cell networks, as one of the promising technologies in era 5G, is able to improve spectral efficiency and increase system capacity.In this paper, we model cross-and co-tier D2D communications two-tier networks.To avoid complicated interference for cross-tier D2D, propose a mode selection scheme with dedicated resource sharing strategy.For formulate joint optimization problem power control reuse aim maximizing overall outage...

Ultrareliable and low-latency communications (uRLLC) is one of the most significant requirements for future wireless networks. The conventional terrestrial base stations cannot always provide required uRLLC emerging applications scenarios, e.g., Tactile Internet services or when a large number users get connected during an event. Therefore, multilayer airborne networks with low/medium/high altitude platforms can be deployed as effective solution to offer capacity coverage along latency...

The fifth generation (5G) networks have changed the world we live in, and device-to-device (D2D) communications are expected to further enhance 5G by enabling direct communication between two adjacent user equipments (UEs) without bypassing next Node B. However, D2D insufficient for establishing high-quality links across long distances. This article, taking relay-assisted cooperate into account, studied mode switching power allocation problems maximize joint channel capacity while meeting...

End-to-end slicing provides more opportunities for telecommunications in vertical industry. It is able to satisfy the different Service Level Agreement of However, a smarter and flexible management framework required support deep application industry beyond 5G networks. The research standardization 3GPP other SDOs has started focus on smart slicing. A significant target users' intents requirements. An intent-based network can recognize intent real-time then update guarantee SLA. In this...

Intent-based Networking (IBN) is geared towards the on -demand service requirements of future intelligent network full-service scenarios, providing personalized services and differentiated level agreement (SLA) for users. It implemented based autonomous networks, which requires to use Artificial Intelligent (AI) models match appropriate resources proposed by To improve reliability matching policies AI in closed -loop an open scheme policy verification using digital twins. The tested analyzed...

Adopting mobile chargers (MC) in rechargeable wireless sensors network (R-WSN) to recharge can increase efficiency (e.g., reduce MC travel distance per tour, effort, and prolong WSN lifetime). In this study, we propose a mechanism split the sensing field into partitions that may be equally spaced but differ base station. Moreover, focus on minimizing effort by providing new charging called sector-based schedule (SBCS), which works dispatch trips sector sends many requests suggesting an...

The popularity of 5G and cloud technology have created conditions for the development novel video services, at same time, services put forward higher requirements network. By analyzing problems complex configuration, long setup cycle poor scalability traditional Metropolitan Area Network (MAN) architecture in deployment introduce metropolitan area network (MACN) architecture. Introduce how to deploy Ethernet Virtual Private (EVPN) over SRv6 based on MACN satisfy differentiated guarantee...

The paper proposes a scheme for route optimisation 6LoWPAN nested mobile wireless networks. In the scheme, node in network can communicate with correspondent without going through any corresponding routers home agents or establishing tunnel, which reduces data transmission cost and shortens delay time. creates hierarchical structure router's care-of address, IPv6 address configuration algorithm based on shortest path strategy. addition, correctly determine location of according to node$s...

Evaluating a SIP server's performance before being deployed is important for network design. Testing the main way to fulfill this task. But different testing environment affects result greatly. This paper studies impact of end user's response delay on server analytically and proposes necessity evaluate in real environment. A distributed tool, SIPPerformer that can simulate various traffic models as well user distributions introduced. By employing central test host multiple agents, reach any...

Social airborne sensing (SAS) is emerging as a new paradigm that leverages the complementary aspects of social and (i.e., UAVs) for reliable information collection. In this paper, we present HeteroSAS, heterogeneous resource management framework "all-in-the-air" SAS in disaster response applications. Current approaches use UAVs to only capture data, but carry out computation on ground-based processing nodes may be unavailable scenarios thus consider single model UAV along with one type task...

This paper presents a compact integrated dualport diversity antenna for LTE (long term evolution) applications in future handheld devices. The design merges two PIFAs (planar inverted F-shaped antennas) into one which not only occupies less areas, but also doesn't require separation of individual elements while still maintaining good isolation and characteristics. proposed can be utilized wireless communication devices to provide signals or act as duplexer allowing the receive transmit well...

Abstract The 5G core network adopts Network Functions Virtualization technology, which forms a variety of virtual resources for general computing, storage, and hardware to achieve dynamic flexible deployment functions based on needs. With large-scale commercial cloud-native with function virtualization the operation maintenance is facing new challenges. This paper describes architecture characteristics network, analyses challenges brought by such as SBA, NFV, MEC separated UPF, well...

This letter presents a novel multicarrier waveform scheme for high Doppler communications, referred to as frequency-Doppler (FD) division multiplexing (FDDM). The FDDM enables the conversion of time-varying channel representation in time-frequency (TF) domain static FD composed independent taps. Distinguished from orthogonal frequency (OFDM), modulates symbols domain, entailing each symbol be spread over entire frame time. Thus, diversity can achieved when maximum ratio combining (MRC)...

Ultra-dense networks (UDNs) are considered to be a key technology that can meet the growing rate requirements caused by explosion of user equipments (UEs) in Internet Things (IoT) applications. The dense deployment small-cell base stations (SBSs) facilitates reuse spectrum resources but also leads significant interference among adjacent SBSs. Joint transmission (JT) alleviate inter-cell and improve throughput. However, signal processing backhaul during BS cooperation require additional power...