Device-to-Device (D2D) communication has become a promising candidate in future cellular networks to improve spectrum efficiency and energy efficiency, while reducing the latency. As capacity of D2D user equipments (DUEs) increases, it makes DUEs caching possible, can offload traffic from macro base stations, perform computation-intensive latency-critical tasks. In this paper, in-band is considered, Poisson cluster process utilized model analyze clustered under cluster-centric strategy....

Concerning on the shortcoming and complexity of Random early detection (RED) algorithm in network congestion control, a new RED based Hemi-Rise Cloud model (CRED) was proposed, nonlinear packet loss strategy used, sensitivity uncertainty parameters were improved. As result, queue length could be kept stable neighborhood reference value. Network well controlled resource used effectively. The stability studied experimental results showed that proposed improve stability, had better performance...

Wireless edge caching has been proposed to reduce data traffic congestion in backhaul links, and it is being envisioned as one of the key components next-generation wireless networks. This paper focuses on influences different strategies Device-to-Device (D2D) We model D2D User Equipments (DUEs) Gauss determinantal point process considering repulsion between DUEs, well replacement a many-to-many matching game. By analyzing existing placement strategies, new strategy proposed, which...

Logistics is an important application area of the Internet Things. The paper first introduces possibility combination Things and logistics. Then existing architecture has been analyzed. Based on architecture, puts forward advice used in logistics briefly describes key technologies On basis technologies, article gives embodiment current business framework process management decision making based have discussed. can realize automation, operation efficiency, reducing storage cost improving...

Recent years, 5G networks have become an important role in accelerating the development of social intelligence. But it also increases energy consumption and data flow. In order to guarantee experience network users, adaptive SWIPT-based MEC is proposed. The consists multiple user equipment (UE) mobile edge computing (MEC) servers. server can make up for shortcomings UE's insufficient capability, Simultaneous Wireless Information Power Transfer (SWIPT) send UE without pollution limited...

With the development of large scale integrated circuits and Internet technology, 5G has become hotspot current domestic international mobile communication research. Device-to-device (D2D) is one key technologies 5G. It enables direct between proximate devices, thereby improving overall spectrum utilization offloading traffic cellular networks. In this paper, we use stochastic geometry Poisson cluster process to analyze uplink Firstly, treat location BSs as distributed points according a...

It can greatly improve the system performance by introducing cooperative communication into Cognitive Radio Networks (CRNs), but it has also increased complexity of CRNs. As is known to all, average throughput CRNs will decrease as number relay nodes increases. In order solve this problem, we used a selection amplify-and-forward scheme relay. maximize CRNs, based on maximizing received SNR, proposed an optimal power allocation algorithm combined with best and communication. First, algorithm,...

To ensure the optimal use of spectrum, when primary user or spectrum quality deterioration occurs, secondary users need to change which is called as mobility. The new handoff handoff. Among key technologies in Cognitive Radio Networks, has received extensive concern from both academia and industry. Switching request strategy based on queuing theory put forward for non-real-time data services, blocking probability, outage probability channel utilization rate are studied simulated. According...

As cloud computing going, data integration and center have reemerged as an active research topic recently, due to the increased requirements for exchange of in various formats our increasingly interconnected but inevitably heterogeneous world. Three-layered metadata model, including source metadata, business is proposed realize integration, components functions each layer are introduced. Then RDF-based representation introduced interchange. The architecture a typical system based on has been...

Data integration is an old problem that reemerged as active research topic recently, due to the increased requirements for exchange of data in various formats our increasingly interconnected but inevitably heterogeneous world. On basis existing technologies, metadata proposed realize integration. Firstly, three-layered model introduced, including source metadata, business and metadata. Based on this, four-layered service framework based has been put forward, it respectively includes...

摘要: 该文针对认知无线电系统动态性的特点,将微分博弈理论应用在认知无线电系统的功率控制中,建立了功率控制的非合作微分博弈模型,提出了一种基于微分博弈的分布式非合作功率控制算法。该算法在满足认知用户平均功率门限和QoS需求的基础上,实现了分布式动态功率控制,获得了反馈纳什均衡解析解。仿真结果表明,该算法可有效控制各认知用户的发射功率,增加系统吞吐量,提高系统性能。 关键词: 认知无线电; 功率控制; 博弈论; 微分博弈; 反馈纳什均衡

Clustering is an effective approach for managing nodes in wireless sensor networks (WSN). In this paper, we consider selfish avoidance clustering WSN. A differential game model proposed to stimulate forwarding. Based on the payoff value of game, called forwarding contribution (FC) a centralized algorithm proposed. Mathematical proof shows that our can ensure connection between cluster heads (CHs), and also FC reasonably reflect energy consumption terms competition while considering...

With the development of large-scale integrated circuits and Internet, 5G has become hot topic current mobile communication. Device-to-device communication (D2D) is one key technologies 5G. In this paper, considering in-band communication, we use Poisson cluster process (PCP) to model analyze heterogeneous cellular D2D networks. Firstly, Thomas users users. Secondly, aggregated interference typical receiver in Then Laplace transform deduce coverage probability receiver. Simulation results...

The defects of traditional ERP (enterprise resource planning) system are analyzed. application feasibility intelligent autonomous decentralized to the structure discussed. architecture distributed is presented. It has some advantages such as intelligence, reengineering and flexibility. Moreover, integration material- flow, capital-flow information-flow in implementing model based on Intelligent Autonomous Decentralized System

In recent years, service isolation and miniaturization have become very popular. The large services are dismantled into multiple low‐cost simple small to improve the scalability disaster tolerance of entire services. A network composed unmanned aerial vehicles (UAVs) MEC servers is proposed in this paper, which aims at decoupling SWIPT‐MEC network. network, UAVs take charge energy transmission calculation task scheduling focused on calculation. To meet resource requirements ground nodes...