Conferences related to Wide Area Network (wwan)

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2012 IEEE Bipolar/BiCMOS Circuits and Technology Meeting - BCTM

Premier international forum for bipolar/BiCMOS research.



Periodicals related to Wide Area Network (wwan)

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Smart Grid, IEEE Transactions on

The IEEE Transactions on Smart Grid is intended to be a cross disciplinary and internationally archival journal aimed at disseminating the results of research on smart grid that relates to energy generation, transmission, distribution and delivery. The journal will publish original research on theories, technologies, design, policies, and implementation of smart grid. The Transactions will welcome manuscripts on design, implementation ...



Most published Xplore authors for Wide Area Network (wwan)

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Xplore Articles related to Wide Area Network (wwan)

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A fuzzy logic based vertical handoff decision algorithm between WWAN and WLAN

2010 International Conference on Networking and Digital Society, 2010

Next generation wireless communications will integrate multiple wireless access networks, including Wireless Wide Area Network (WWAN) and Wireless Local Area Network (WLAN). Vertical handoff decision plays an important role in heterogeneous networks. In this paper, we propose a fuzzy logic based vertical handoff decision algorithm (VHDA) to provide ubiquitous access at any time. Our proposed algorithm considers received signal strength ...


A study for grounding effect to improve performance of WWAN

2008 IEEE International Symposium on Electromagnetic Compatibility, 2008

Electromagnetic interference (EMI) from a LCD panel deteriorates the performance of wireless network system (with wireless network cards: Wireless Wide Area Network (WWAN) card) in a notebook. One of the main EMI noise factor, for the wireless network system, is the grounding effect of the antenna in the system. In this paper, the approach to solve the EMI noise of ...


Diagnosis of EMI to laptop WWAN device from TFT-LCD driver using non-contact measurement-based transfer function technique

2010 IEEE International Symposium on Electromagnetic Compatibility, 2010

This paper presents a novel non-contact measurement technique for electromagnetic interference (EMI) diagnosis. The proposed technique uses vector network analyzer with antenna and near-field probes to measure the transfer function for an EMI path without interrupting the operation of device under test. As an example, with the help of the measured transfer function and equivalent source in the proposed technique, ...


Structured Network Coding and Cooperative Wireless Ad-Hoc Peer-to-Peer Repair for WWAN Video Broadcast

IEEE Transactions on Multimedia, 2009

In a scenario where each peer of an ad-hoc wireless local area network (WLAN) receives one of many available video streams from a wireless wide area network (WWAN), we propose a network-coding-based cooperative repair framework for the ad-hoc peer group to improve broadcast video quality during channel losses. Specifically, we first impose network coding structures globally, and then select the ...


Seamless Vertical Handoff algorithm for WWANs and WLANs overlay networks

2015 International Conference on Communications and Signal Processing (ICCSP), 2015

In Heterogeneous Wireless Networks (HWN), providing seamless connectivity is one of the key issues. To achieve this, an efficient vertical handoff algorithm has to be designed, which takes an account of network condition detection in terms of Quality of Service (QoS) parameters to choose the better network to maintain connectivity. This paper proposes a Seamless Vertical Handoff Decision algorithm (SVHD) ...



Educational Resources on Wide Area Network (wwan)

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IEEE-USA E-Books

  • A fuzzy logic based vertical handoff decision algorithm between WWAN and WLAN

    Next generation wireless communications will integrate multiple wireless access networks, including Wireless Wide Area Network (WWAN) and Wireless Local Area Network (WLAN). Vertical handoff decision plays an important role in heterogeneous networks. In this paper, we propose a fuzzy logic based vertical handoff decision algorithm (VHDA) to provide ubiquitous access at any time. Our proposed algorithm considers received signal strength (RSS), available network bandwidth (B), monetary cost (C) and user preference (P) as the vertical handoff decision criteria. The proposed VHDA uses the fuzzy logic method to evaluate the performance of the available networks. Then handoff decisions are made to select the most appropriate network for the mobile nodes (MNs). Simulation results show that fuzzy logic based VHDA is able to make accurate handoff decisions, reduce unnecessary handoffs and decrease the probability of call blocking and dropping.

  • A study for grounding effect to improve performance of WWAN

    Electromagnetic interference (EMI) from a LCD panel deteriorates the performance of wireless network system (with wireless network cards: Wireless Wide Area Network (WWAN) card) in a notebook. One of the main EMI noise factor, for the wireless network system, is the grounding effect of the antenna in the system. In this paper, the approach to solve the EMI noise of the system is introduced; by using the grounding methods of the system. In order to measure the EMI noise of the WWAN itself, the standard JIG system is developed. Most grounding effects are confirmed experimentally. Because the EMI noise of the WWAN system is difficult to reduce, it is important to know the antenna (with the coaxial cable) itself.

  • Diagnosis of EMI to laptop WWAN device from TFT-LCD driver using non-contact measurement-based transfer function technique

    This paper presents a novel non-contact measurement technique for electromagnetic interference (EMI) diagnosis. The proposed technique uses vector network analyzer with antenna and near-field probes to measure the transfer function for an EMI path without interrupting the operation of device under test. As an example, with the help of the measured transfer function and equivalent source in the proposed technique, the EMI to laptop wireless wide area network (WWAN) device caused by a thin film transistor-liquid crystal display (TFT-LCD) driver is accurately diagnosed and appropriately treated. In addition, an easy-to-follow procedure is given for applying the presented non- contact measurement technique to the demonstrated example.

  • Structured Network Coding and Cooperative Wireless Ad-Hoc Peer-to-Peer Repair for WWAN Video Broadcast

    In a scenario where each peer of an ad-hoc wireless local area network (WLAN) receives one of many available video streams from a wireless wide area network (WWAN), we propose a network-coding-based cooperative repair framework for the ad-hoc peer group to improve broadcast video quality during channel losses. Specifically, we first impose network coding structures globally, and then select the appropriate video streams and network coding types within the structures locally, so that repair can be optimized for broadcast video in a rate-distortion manner. Innovative probability-the likelihood that a repair packet is useful in data recovery to a receiving peer-is analyzed in this setting for accurate optimization of the network codes. Our simulation results show that by using our framework, video quality can be improved by up to 19.71 dB over un-repaired video stream and by up to 5.39 dB over video stream using traditional unstructured network coding.

  • Seamless Vertical Handoff algorithm for WWANs and WLANs overlay networks

    In Heterogeneous Wireless Networks (HWN), providing seamless connectivity is one of the key issues. To achieve this, an efficient vertical handoff algorithm has to be designed, which takes an account of network condition detection in terms of Quality of Service (QoS) parameters to choose the better network to maintain connectivity. This paper proposes a Seamless Vertical Handoff Decision algorithm (SVHD) which makes mobile users to access variety of services without any service degradation or interruption among overlay networks namely Wireless Wide Area Networks (WWANs) and Wireless Local Area Networks (WLANs). Simulation results show that the proposed algorithm reduces the delay and the number of packets dropped during handover.

  • Single Open-Slot Antenna for LTE/WWAN Smartphone Application

    A single open-slot antenna for long term evolution (LTE)/ wireless wide area network (WWAN) operation is proposed for smartphone applications. To achieve dual-band operation, the narrow openslot is fed by a simple 50-Ω vertical feedline with two horizontally protruded feeding structures. To further attain good impedance matching for these two operating bands, an L-shaped metallic plate is used. From the measured results, good antenna efficiencies of more than 40% are demonstrated across the LTE/WWAN operation in the 698-960 MHz and 1710-2690 MHz bands.

  • A Compact Multiband Inverted-F Antenna for LTE/WWAN/GPS/WiMAX/WLAN Operations in the Laptop Computer

    An inverted-F antenna with multiband operations for Long-Term Evolution (LTE700/2300/2500), wireless wide area network (WWAN), GPS, WiMAX (2.3/2.5/3.5 GHz), and WLAN (2.4 GHz) applications is presented. The antenna consists of multibranch strips and is fabricated on both sides of an Al2O3ceramic substrate, which has a compact size of 97 (L) × 11.2 (W) × 0.5 (T) mm3to be embedded inside the laptop computer as an internal antenna. Four operating bands covering 646-983, 1503-1589, 1696-2963, and 3396-3646 MHz for the LTE, WWAN, GPS, WiMAX (2.3/2.5/3.5 GHz) and WLAN (2.4 GHz) systems are achieved with good radiation efficiencies.

  • Compact Multibranch Inverted-F Antenna to be Embedded in a Laptop Computer for LTE/WWAN/IMT-E Applications

    A multibranch inverted-F antenna with multiband operations for long-term evolution (LTE), pentaband wireless wide area network (WWAN) and IMT-E (2.6 GHz) applications is presented. The antenna consists of multibranch strips and is fabricated on a direct bond copper (DBC) substrate, which has a compact size of 96 (_L_) × 11.2 (_W_) × 0.5 (_H_) mm3to be embedded in the laptop computer as an internal antenna. Three operating bands covering 663-993, 1689-2190, and 2449-2783 MHz for the LTE, GSM850/900 and DCS/PCS/UMTS, and IMT-E systems are achieved with good radiation efficiencies. The proposed antenna can be embedded in the laptop computer for the LTE, WWAN, and IMT-E applications.

  • Traffic allocation scheme with cooperation of WWAN and WPAN

    An explicit adaptive traffic allocation scheme is investigated in terms of the cooperation across wireless wide area networks (WWANs) and wireless personal area network (WPAN). The analysis and numerical simulations indicate that the proposed scheme achieves inter-networking load balance to minimize the whole transmission delay and expands the communication ability of single-mode terminals to support high data rate traffics.

  • A seamless and proactive end-to-end mobility solution for roaming across heterogeneous wireless networks

    Roaming across heterogeneous wireless networks such as wireless wide area network (WWAN) and wireless local area network (WLAN) poses considerable challenges, as it is usually difficult to maintain the existing connections and guarantee the necessary quality-of-service. This paper proposes a novel seamless and proactive end-to-end mobility management system, which can maintain the connections based on the end-to-end principle by incorporating an intelligent network status detection mechanism. The proposed system consists of two components, connection manager (CM) and virtual connectivity (VC). The CM, by using novel media access control-layer and physical-layer sensing techniques, can obtain accurate network condition, while at the same time reducing the unnecessary handoff and ping-pong effect. The VC can make mobility transparent to applications without additional network-layer infrastructure support using a local connection translation, and can handle mobility well in the network address translator and simultaneous movement cases using a subscription/notification service. The proposed system enjoys several unique advantages: 1) capable of reacting to roaming events proactively and accurately; 2) maintaining the connection's continuity with small handoff delay; and 3) being a unified end-to-end approach for both IPv4 and IPv6 networks. We have built a prototype system and performed experiments to demonstrate the advantages of the proposed system.



Standards related to Wide Area Network (wwan)

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Standard for Health informatics - Point-of-care medical device communication - Transport profile - RF wireless - Wide area (Mobile Phone) Network (wWAN)

This project is an extension of, and linked to, project number 1073.0.1.1 (Health informatics - Point-of-care medical device communication - Technical report - Guidelines for the use of RF wireless technology) and a further extension of project number 1073.3.5 (Health Informatics - Framework and Overview Structure for Wireless Medical Data Transport using Personal Area, Local Area, Wide Area, and other ...