Showing papers on "Wi-Fi array published in 2014"

In-Band Full-Duplex Wireless: Challenges and Opportunities

Abstract: In-band full-duplex (IBFD) operation has emerged as an attractive solution for increasing the throughput of wireless communication systems and networks. With IBFD, a wireless terminal is allowed to transmit and receive simultaneously in the same frequency band. This tutorial paper reviews the main concepts of IBFD wireless. One of the biggest practical impediments to IBFD operation is the presence of self-interference, i.e., the interference that the modem's transmitter causes to its own receiver. This tutorial surveys a wide range of IBFD self-interference mitigation techniques. Also discussed are numerous other research challenges and opportunities in the design and analysis of IBFD wireless systems.

Principles of Physical Layer Security in Multiuser Wireless Networks: A Survey

Abstract: This paper provides a comprehensive review of the domain of physical layer security in multiuser wireless networks. The essential premise of physical layer security is to enable the exchange of confidential messages over a wireless medium in the presence of unauthorized eavesdroppers, without relying on higher-layer encryption. This can be achieved primarily in two ways: without the need for a secret key by intelligently designing transmit coding strategies, or by exploiting the wireless communication medium to develop secret keys over public channels. The survey begins with an overview of the foundations dating back to the pioneering work of Shannon and Wyner on information-theoretic security. We then describe the evolution of secure transmission strategies from point-to-point channels to multiple-antenna systems, followed by generalizations to multiuser broadcast, multiple-access, interference, and relay networks. Secret-key generation and establishment protocols based on physical layer mechanisms are subsequently covered. Approaches for secrecy based on channel coding design are then examined, along with a description of inter-disciplinary approaches based on game theory and stochastic geometry. The associated problem of physical layer message authentication is also briefly introduced. The survey concludes with observations on potential research directions in this area.

WiFall: Device-free fall detection by wireless networks

Abstract: Injuries that are caused by falls have been regarded as one of the major health threats to the independent living for the elderly. Conventional fall detection systems have various limitations. In this work, we first look for the correlations between different radio signal variations and activities by analyzing radio propagation model. Based on our observation, we propose WiFall, a truly unobtrusive fall detection system. WiFall employs physical layer Channel State Information (CSI) as the indicator of activities. It can detect fall of the human without hardware modification, extra environmental setup, or any wearable device. We implement WiFall on desktops equipped with commodity 802.11n NIC, and evaluate the performance in three typical indoor scenarios with several layouts of transmitter-receiver (Tx-Rx) links. In our area of interest, WiFall can achieve fall detection for a single person with high accuracy. As demonstrated by the experimental results, WiFall yields 90 percent detection precision with a false alarm rate of 15 percent on average using a one-class SVM classifier in all testing scenarios. It can also achieve average 94 percent fall detection precisions with 13 percent false alarm using Random Forest algorithm.

User cooperation in wireless powered communication networks

Abstract: This paper studies user cooperation in the emerging wireless powered communication network (WPCN) for throughput optimization. For the purpose of exposition, we consider a two-user WPCN, in which one hybrid access point (H-AP) broadcasts wireless energy to two distributed users in the downlink (DL) and the users transmit their independent information using their individually harvested energy to the H-AP in the uplink (UL) through time-division-multiple-access (TDMA). We propose user cooperation in the WPCN where the user that is nearer to the H-AP and in general has a better channel for DL energy harvesting as well as UL information transmission uses part of its allocated UL time and DL harvested energy to help relay the far user's information to the H-AP, in order to achieve more balanced throughput. We maximize the weighted sum-rate (WSR) of the two users by jointly optimizing the time and power allocations in the network for both wireless energy transfer in the DL and wireless information transmission and relaying in the UL. Simulation results show that the proposed user cooperation scheme can effectively improve the achievable throughput in the WPCN with desired user fairness.

Integrated Wireless Backhaul Over Optical Access Networks

Abstract: Recent technological advances and deployments are creating a new landscape in access networks, with an integration of wireless and fiber technologies a key supporting technology. In the past, a separation between those with fiber in the access networks and those with wireless networks, the relatively low data-rate requirements of backhaul and the relatively large cell sites, have all combined to keep fiber deployment low in wireless backhaul. As fiber has penetrated the access network and the latest wireless standards have demanded smaller, higher bandwidth cells, fiber connectivity has become key. Choices remain as to where the demarcation between key elements should be in the network and whether fiber should be used as just a high data-rate backhaul path or if a transition to radio-over-fiber techniques can afford benefits. This paper will explore the network options available in particular those demonstrated in recent European Union (EU) projects, how they can be integrated with existing access networks and how techniques such as radio-over-fiber can be deployed to offer increased functionality.

Systems and methods for managing a distributed wireless power transfer network for electrical devices

Abstract: The disclosure relates to systems and methods for managing a wireless power transfer network for power transfer to electrical devices, providing central management console in communication with cloud based network, comprising at least one wireless power outlet and at least one management server. The management system, of the current disclosure, is enabling remote health check and maintenance of all of wireless power outlets within the network. Further, the management system allows for complete monitoring of a deployment according to system administrator rights and policy management coupled with command and control functioning to determine allowed / disallowed functionality while transferring powering to an electrical device in a specific venue.

System and method for controlling communication between wireless power transmitter managers

Abstract: A method for controlling communication between wireless power transmitter managers is disclosed. According to some aspects of this embodiment, wireless power transmission system may include one or more wireless power transmitter managers and one or more wireless power receivers for powering various customer devices. A WiFi connection may be established between wireless power transmitter managers to share information between system devices. Wireless power transmitter manager may need to fulfill two conditions to control power transfer over a customer device; customer device's signal strength threshold has to be significantly greater than 50%, such as 55% or more of the signal strength measured by all other wireless power transmitter managers and has to remain significantly greater than 50% for a minimum amount of time.

Wireless powered house

Abstract: The present disclosure may provide a wireless power system which may be used to provide wireless power transmission (WPT) while using suitable WPT techniques such as pocket-forming. Wireless power system may be used in a wireless powered house for providing power and charge to a plurality of mobile and non-mobile devices. Wireless powered house may include a single base station which may be connected to several transmitters. Base station may manage operation of every transmitter in an independently manner or may operate them as a single transmitter. Connection between base station and transmitters may be achieved through a plurality of techniques including wired connections and wireless connections.

Intelligent device connection for wireless media ecosystem

Abstract: Techniques associated with intelligent device connection for wireless media ecosystem are described, including a device having an antenna configured to detect a broad spectrum of radio signals, a media configuration module configured to generate media preferences, and an intelligent communication facility configured to determine a proximity of a wireless device using data associated with a radio signal received by the antenna from the wireless device, to determine whether the wireless device is a compatible device, and to communicate with the wireless device after determining compatibility.

Wireless power transmission apparatus and method therefor

Abstract: The present invention relates to a wireless power transmission apparatus and a method therefor, and more particularly to a wireless power transmission apparatus for supplying wirelessly power to a plurality of wireless power reception devices using different wireless power transmission/reception means A wireless power transmission apparatus according the present invention includes: a power transmission module for transmitting wirelessly power by means of the magnetic field of one of a plurality of predetermined frequency bands; a communication module for communicating with a wireless power reception device; and a controller for setting a power transmission mode based on a plurality of device profiles reflecting the frequency bands used for wireless power transmission/reception received from a plurality of wireless power reception devices

System and method for smart registration of wireless power receivers in a wireless power network

Abstract: A system and method for smart registration of wireless power receivers within a wireless power network is disclosed. Each wireless power device may include a universally unique identifier (UUID). Each wireless power device bought by a customer may be registered, at the time of purchase or later. The registry may be stored in an energy domain service, where energy domain service may be one or more cloud-based servers. The method for smart registration may include the steps of detecting a customer device; establishing a connection with a wireless power receiver to read its UUID; sending wireless power transmitter manager's UUID and wireless power receiver's UUID to energy domain service; inspecting wireless power transmitter manager registry; verifying wireless power receiver registry; authorizing power transfer to wireless power receiver; and reporting energy consumption for subsequent billing of customer depending on billing policy of wireless power transmitter manager specified within registry.

Wireless power charging apparatus and method of charging the apparatus

Abstract: A wireless power charging apparatus and method are provided, which recognizes location information of at least one wireless power receiving apparatus; selects at least one of at least one wireless power transmitter that supplies power to the at least one wireless power receiving apparatus based on the location information; and supplies power to the at least one wireless power receiving apparatus through the at least one selected wireless power transmitter.

Wireless charging control method and apparatus in wireless power transmission system

Abstract: The present disclosure provides a wireless charging control method. The wireless charging control method in an apparatus having a wireless power reception module, includes sensing an event in a wireless charging mode, determining whether the sensed event is a predetermined wireless-charging indirect-associated event, when the sensed event is a predetermined wireless-charging indirect-associated event, identifying a wireless charging operation corresponding to the wireless-charging indirect-associated event and controlling wireless charging according to the identified wireless charging operation.

Control method for wireless charging

Abstract: A control method for performing wireless charging in a wireless power receiver is disclosed. The control method includes receiving charging power from a wireless power transmitter; detecting transition of the wireless power receiver from a Stand Alone (SA) mode to a Non Stand Alone (NSA) mode; upon detecting the mode transition, generating a message including address information used to re-connect with the wireless power transmitter; and transmitting the message to the wireless power transmitter.

Method for Automatically Testing the Operational Status of a Wireless Power Receiver in a Wireless Power Transmission System

Abstract: Disclosed here are wireless power delivery systems including one or more wireless power transmitters and one or more power receivers. Disclosed here are methods of using self-test software for fault detection in wireless power receivers. The methods include the analysis of one or more system operational metrics to evaluate the status of wireless power receivers. The results of the tests may be sent to wireless power transmitters to further analysis; all test results ultimately are sent to the operator of the wireless power delivery system.

Smart wireless sensor network management based on software-defined networking

Abstract: In this position paper, we propose the use of software-defined networking (SDN) in wireless sensor networks (WSNs) for smart management. We argue that smart management using SDN promises a solution to some of inherent problems in WSN management. Furthermore, we propose a generic architecture for a base station in a software-defined wireless sensor network. We also propose a general framework for a software-defined wireless sensor network where the controller is implemented at the base station. We then raise some important questions that need to be investigated in future research in software-defined wireless sensor networks.

Off-premises alert system and method for wireless power receivers in a wireless power network

Abstract: Embodiments in the present disclosure may be directed to an off-premises alert system and method for one or more wireless power receivers in a wireless power network. The system and method may include automated software embedded on a wireless power receiver that may be triggered every time a wireless power receiver is turned on. The system and method may be employed in stores where customers may use wireless power receivers to charge their mobile devices such as smartphones, tablets, and the like, while being inside the store. The method may prevent customers from not returning the wireless power receiver by producing an audible alert in the power receiver. If customer fails to return wireless power receiver, the method may then automatically report details regarding the lost wireless power receiver to an appropriate authority through automatic communication connection through any intervening network cloud-based media.

Systems and Methods for Device and Power Receiver Pairing

Abstract: Various exemplary embodiments of the present disclosure describe systems and methods for pairing electronic devices with wireless power receivers. The described systems include one or more wireless power transmitters, one or more wireless power receivers and one or more electronic devices. Electronic devices may be able to communicate with wireless power transmitters and wireless power receivers using suitable communications channels. The disclosed systems are capable of associating an electronic device with a wireless power receiver when the wireless power receiver is in close proximity or attached to the electronic device for a suitable period of time.

Wireless sound powered house

Abstract: The present invention provides a wireless sound power system using wireless power transmission techniques such as pocket-forming. Wireless sound power system is used in a house to provide power and charge to a plurality of mobile and non-mobile devices therein. The wireless powered house often includes a single base station that is connected to several transmitters. The base station manages operation of every transmitter in an independently manner or operates several transmitters as a single transmitter. Connection between base station and transmitters may be achieved through a plurality of techniques including wired connections and wireless connections. In some embodiments, transmitters include one or more transducers connected to at least one sound wave integrated circuit with a micro-controller and a power source.

System and Method for Manually Selecting and Deselecting Devices to Charge in a Wireless Power Network

Abstract: A system for selecting a deselecting charging devices in a wireless power network is disclosed here. The system includes a graphical user interface from which a user may select or deselect devices to be charged in a wireless power network. The disclosed system may store records from different components of a wireless power network into a database distributed throughout said network with copies stored within the memory of wireless power transmitters.

System and Method for Generating a Power Receiver Identifier in a Wireless Power Network

Abstract: Embodiments in the present disclosure may be directed to a system and method that may be used to generate a unique identifier for one or more wireless power devices such as one or more wireless power receivers, wireless power transmitters, GUI management devices, and system management servers among others, within a wireless power network. The method may use automated software embedded on a chip that may run when a wireless power device boots up for the first time. The unique ID may allow easy associations of wireless power devices with user defined names.

Systems and methods for a configuration web service to provide configuration of a wireless power transmitter within a wireless power transmission system

Abstract: A system and method for a configuration web service to provide configuration of a wireless power transmitter within a wireless power transmission system is disclosed. The wireless power transmitter configuration network may include at least one wireless power transmitter connected to an energy power source and at least one computer device which may communicate with each other through wireless or wired network connections, where each wireless power transmitter may include a distributed system database coupled to web service software. The operator/user may browse the specific URL or IP address associated with the configuration web page, which the wireless power transmitter may host and render, to specify the wireless power transmitter's configuration information. The configuration web service may allow users to perform configurations with and without the need of an external network service in range and regardless of the physical location of the wireless power transmitter.

Systems and methods for wireless transmission of power

Abstract: Systems and methods for real time communication between wireless power transmitters and wireless power receivers based on software embedded on a microprocessor. The systems and methods described here may allow wireless power transmitters to communicate with one or more wireless power receivers in real time within intervals of one second. The systems and methods described here may also enable full control of the wireless power receivers by letting the user decide which wireless power receivers to charge, when to charge them, and set priorities and charging schedules among other functions.

Systems and Methods for Communication with Remote Management Systems

Abstract: Various exemplary embodiments of the present disclosure describe systems and methods for communication between wireless power transmission systems and remote management systems. The described systems include one or more wireless power transmitters, one or more wireless power receivers and one or more electronic devices. Electronic devices may be able to communicate with wireless power transmitters and wireless power receivers using suitable communications channels. The disclosed systems are capable of performing system assessments and check-ups, periodically generating status reports and sending the status reports to a remote management system.

Enhanced Transmitter for Wireless Power Transmission

Abstract: An enhanced transmitter for wireless power transmission is disclosed. The transmitter may be able to transmit radio frequency (RF) waves or pockets of energy for charging or powering an electronic device. The transmitter may include antenna element arrangements for receiving RF waves from a plurality of wireless sources and process them using a dedicated RF integrated circuit (RFIC) and set of antenna elements for receiving RF input signals from a plurality of wireless power sources. A digital signal processor (DSP) may be used to control reception using the dedicated RFIC and antenna elements of reception and to control transmission of wireless power selecting the transmitting RFICs and configuration of antenna elements to send RF waves or pockets of energy to a wireless receiver. The frequency of RF waves received may be sampled through a down converter array and line addressing devices to send the signals received to a micro-controller including a proprietary algorithm which control switching and processing necessary for faster and enhanced wireless power transmission, thus improving transmission efficiency.

Wireless sound tracking pocket-forming

Abstract: The present disclosure describes a wireless tracking system for tracking the location of living beings or objects. This wireless tracking system may operate by using the wireless power transmission methodology, which may include one transmitter and at least one or more receivers. The transmitter producing sound waves is the source of energy and the receiver is connected to an electronic device that is desired to charge or power. Transmitter and receiver may include communications components to communicate between each other. Communication components may utilize wireless protocols Which may have a unique identifier. The unique identifier may allow mapping, store and uploading information of devices a database located in public or private cloud-based service. A user may be able to access to information stored in database using user credentials, being able to access from any suitable device and place. Other elements may be adapted to wireless tracking system for obtaining more complete information about living beings or objects.

System and Method for a Self-system Analysis in a Wireless Power Transmission Network

Abstract: A system and method for a self-system analysis in a wireless power transmission network is disclosed. According to some aspects of this disclosure a wireless power transmission network may include one or more wireless power transmitter managers, one or more wireless power receivers, servers, and clouds within a local network to provide wireless power transfer to electronic devices. Wireless power devices in the network may establish, but is not limited to a WiFi connection to share information among all the wireless power devices in the system. Wireless power transmitter managers may monitor everything that happens in the network. If a problem is detected by the wireless power transmitter manager, an analysis of the issue may be done by any device in the network with a copy of the device database. Then a recommendation may be generated for enhancing the system.

System and Method for Enabling Automatic Charging Schedules in a Wireless Power Network to One or More Devices

Abstract: A system for managing power charging schedules in a wireless power network is disclosed here. The system includes a graphical user interface from which a user may perform scheduling functions in a wireless power network. The disclosed system may store power scheduling records in a database within a wireless power transmitter or other computers in a wireless power network. The wireless power transmitter may use scheduling records in the database to control when to transmit wireless power to a single power receivers or simultaneously to multiple power receivers.

Systems and Methods for Power Payment Based on Proximity

Abstract: Various exemplary embodiments of the present disclosure describe systems and methods for charging electronic devices using wireless power delivery systems. The described systems include one or more wireless power transmitters, one or more wireless power receivers and one or more electronic devices. Electronic devices may be able to communicate with wireless power transmitters and wireless power receivers using suitable communications channels. The disclosed systems are capable of associating a wireless power receiver with a customer to deliver power to a customer's device.

Systems and methods for providing wireless power to a power-receiving device, and related power-receiving devices

Abstract: In an embodiment, a wireless power distribution system is disclosed. The wireless power distribution system includes a routing module having at least one processor configured to determine a route for a power-receiving device to travel responsive to receiving input about one or more characteristics associated with the power-receiving device or one or more wireless power transmitters for delivering power to the power-receiving device. The wireless power distribution system further includes the one or more wireless power transmitters operably coupled to the routing module. The one or more wireless power transmitters are configured to wirelessly transmit the power to the device at one or more locations along the route.