The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This demo presents an end-to-end hierarchical control of a multi-domain multi-technology integrated fronthaul and backhaul network where a parent controller coordinates the operation of a wireless and optical child controllers managing real wireless and optical data plane resources. The services offered by this hierarchical control infrastructure are accessed through the offered REST-based northbound...
5G-Crosshaul aims at reducing network costs by designing an integrated transport (fronthaul/backhaul) network able to fulfill 5G requirements. Such transport networks will consist of heterogeneous technologies that need end-to-end orchestration. In this paper, we evaluate a hierarchical resource management framework for multi-domain wireless/optical networks. More specifically, we deploy a hierarchical...
Mobile edge computing (MEC) provides a promising way to bring enhanced computing capabilities in proximity to user equipments (UEs). Various previous works have been done and they usually focus on how to segment the computation intensive task and how to offload the task to edge of the network with plenty of computation capacity. However, few of them consider integrating MEC with small cell networks...
At the edge of the network with cache servers, researchers usually focused on how to cache the contents or how to deliver cached contents from edge network to user equipment (UE). In this paper, we study the content delivery scheme in ultra-dense network (UDN) scenario. Since small cells (SCs) are densely and largely deployed in UDNs, it is hard to operate the SCs with a central unit. Thus, our delivery...
Ultra-dense network (UDN) has been considered as one of the advanced technologies in 5G. With the increasing requirements on quality of service (QoS), large numbers of connections and very high area throughput density, various access points (APs) are deployed densely to provide desired services to user terminals. Then how to choose the optimal AP among neighbor candidate APs for accessing to the network...
Massive connectivity is one of the main requirements of the fifth generation (5G) multiple access, and sparse code multiple access (SCMA) as a new non-orthogonal multiple access technique in frequency domain will probably meet the requirement. The sparsity of codewords is the key feature of SCMA, which can enable codewords to be overloaded. In this paper, we evaluate the performance of overloading...
Recently, induced by incorporating the ubiquitous data gathering capability of wireless sensor networks (WSNs) as well as the powerful data storage and data processing abilities of cloud computing (CC), WSN-CC integration is attracting growing interest from both academia and industry. However, WSN-CC integration is still in its infancy and a lot of research efforts are expected to emerge in this area...
To enjoy rich Internet services, contemporary mobile devices generate heavy loads of computation tasks, which cannot be suffered locally due to the limited computing and energy capacities of each device. Cloud radio access network (Cloud RNA) based heterogeneous structure is widely accepted as a promising way to make up devices' shortage and computation need. To determine whether the computation task...
This paper discusses the problem of minimizing the energy used to transmit packets over a memoryless channel, with a constraint on the delay suffered by packets and a constraint on peak transmitter power. The problem is studied within discontinuous reception (DRX) supported system. Specifically, we seek a DRX-compatible transmission policy that can solve the problem without the knowledge of fading...
Considering the rampant growth of data traffic and exponential increasing energy consumption in recent years, energy efficiency is becoming more and more crucial in cooperative communication systems where the wireless devices are battery operated. In this paper, we focus on the energy efficient transmission problem in a one source relay-based cooperative network, aims to find the most energy efficient...
Established a wireless sensor networks and a concrete plan is brought forward based On ZigBee technology. Corrected the time of network by Time Protocol. The hardware and software of the system is designed. Finally, the application effects of the system are analyzed and compared. The System realized the goals such as low cost, low consumption, high stability, high flexibility and expansibility. The...
In this paper, we propose a distributed joint relay selection and power allocation scheme in wireless multi-hop cooperative networks, taking both instantaneous channel state information (CSI) and relay nodes' residual energy into consideration. Specifically, we formulate the cooperative relaying network as a restless bandit system, which has been successfully applied in stochastic control and operations...
In this paper, we propose a distributed best-relay node selection scheme to maximize the achievable data rate for cooperative communications over underlay-paradigm based CR networks, and meanwhile guarantee that the primary link is provided with a minimum-rate for a certain percentage of time. Specifically, we formulate the CR relay network as a restless bandit system, where the finite-state Markov...
Most previous work in CR relay networks concentrates on maximizing physical layer QoS (e.g., capacity, spectral efficiency and achievable data rate) as relay selection criteria. However, the energy state of relay nodes is largely ignored, which has significant effects on the network lifetime. This paper proposes a distributed relay selection scheme for cooperative transmissions over underlay CR networks,...
The WWAN/WLAN two-hop-relay system integrates two types of wireless technologies to improve wireless access throughput and coverage. However, it is unreasonable to assume that all nodes are selfless and willing to relay for other users without an incentive. In this paper, a reputation management framework for Hybrid Wireless Relay Networks is presented. Based on this framework, we show how to collect...
Wireless mesh network (WMN) is a promising wireless technology that received more and more researchers' attention recently. These networks comprise of stationary mesh routers, which essentially serves as the wireless mesh backbone to provide connectivity between the mobile mesh clients. Classical routing protocols developed for typical ad hoc networks, which mainly concentrate on mobility and energy...
In this project our goal is to create a health monitoring system that can transmit the vital signs of a patient through an ad-hoc wireless sensor network for a mass causality emergency application. The health monitoring device is to be placed on an injured victim during an emergency and act as a sensor node to connect to a wireless ad-hoc network to transmit the patient's vital sign data. The target...
Selecting an appropriate peer from the discovered file holders is one of the key steps in wireless peer-to-peer (P2P) file sharing systems. Most of existing peer selection schemes are based on the min-hops selection criterion, which uses the number of hops as the only factor in peer selection. However, due to the distinct characteristics in wireless mobile networks, a number of important factors should...
In an 802.11 wireless network with multiple access points (APs), for a commercial user, a prime concern is how to discover the desired AP since the AP providers maybe selfish and owned by different organization. This paper presents a generic reputation based framework for AP selection for this case. An M/M/1 queuing model is introduced to get a quantitative insight into the performance of wireless...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.