Abstract: Provided is a wireless communication device including a control unit that controls the wireless communication device to act as a group owner or a client, and a communication unit that communicates with another wireless communication device according to control by the control unit, and, when a communication group having a topology where the wireless communication device acts as a group owner and the another wireless communication device acts as a client of the wireless communication device is formed, and a new wireless communication device to enter the communication group appears, the control unit determines whether or not to change a topology of the communication group

Abstract: While traditional wired communication technologies have played a crucial role in industrial monitoring and control networks over the past few decades, they are increasingly proving to be inadequate to meet the highly dynamic and stringent demands of today’s industrial applications, primarily due to the very rigid nature of wired infrastructures. Wireless technology, however, through its increased pervasiveness, has the potential to revolutionize the industry, not only by mitigating the problems faced by wired solutions, but also by introducing a completely new class of applications. While present day wireless technologies made some preliminary inroads in the monitoring domain, they still have severe limitations especially when real-time, reliable distributed control operations are concerned. This article provides the reader with an overview of existing wireless technologies commonly used in the monitoring and control industry. It highlights the pros and cons of each technology and assesses the degree to which each technology is able to meet the stringent demands of industrial monitoring and control networks. Additionally, it summarizes mechanisms proposed by academia, especially serving critical applications by addressing the real-time and reliability requirements of industrial process automation. The article also describes certain key research problems from the physical layer communication for sensor networks and the wireless networking perspective that have yet to be addressed to allow the successful use of wireless technologies in industrial monitoring and control networks.

Abstract: Wireless underground networks are an emerging technology which have application in a number of scenarios. For exam-ple, in a mining disaster, flooding or a collapse can isolate portions of underground tunnels, severing wired communication links and preventing radio communication. In this pa-per, we explore the use of low frequency magnetic fields for communication, and present a new hardware platform that features triaxial transmitter/receiverantenna loops. We point out that the fundamental problem of the magnetic channel is the limited bitrate at long ranges, due to the extreme path loss of 60 dB/decade. To this end, we present two complementary techniques to address this limitation. Firstly, we demonstrate magnetic vector modulation, a technique which modulates the three dimensional orientation of the magnetic vector. This increases the gross bitrate by a factor of over 2.5, without an increase in transmission power or bandwidth. Secondly, we show how in a multi-hop network latencies can be dramatically reduced by receiving multiple parallel streams of frequency multiplexed data in a many-to-one configuration. These techniques are demonstrated on a working hardware platform, which for flexible operation, features a software defined magnetic transceiver. Typical communication range is approximately 30 m through rock.

Abstract: Data communication over power line networks has a number of similarities with communication using wireless transmission. This (probably) goes back to fact that neither power lines nor wireless channels were designed for carrying communication signals. As a result, a number of techniques successfully used in wireless communications have found their way into power line communications (PLC). This has recently been extended to relaying, or more generally, cooperative communications. In this paper, we first show that, different from the wireless domain, cooperative communication does not provide a diversity advantage for typical PLC networks. Secondly, we introduce and compare different approaches of multihop transmission known from wireless communications to PLC. We compare their performances and, supported by numerical results, conclude that cooperative multihop is the preferred choice in terms of end-to-end transmission rate.

Abstract: System and method for improving the shaving experience by providing improved visibility of the skin shaving area. A digital camera is integrated with the electric shaver for close image capturing of shaving area, and displaying it on a display unit. The display unit can be integral part of the electric shaver casing, or housed in a separated device which receives the image via a communication channel. The communication channel can be wireless (using radio, audio or light) or wired, such as dedicated cabling or using powerline communication. A light source is used to better illuminate the shaving area. Video compression and digital image processing techniques are used for providing for improved shaving results. The wired communication medium can simultaneously be used also for carrying power from the electric shaver assembly to the display unit, or from the display unit to the electric shaver.

Abstract: A self-organizing network (SON) capability is provided. A SON may be configured by building intelligence and automation into the network to enable network operators to address various challenges associated with operation of the network. A SON may include one or more of a self-configuration function, a physical cell identifier (PCI) configuration function, a neighbor relationship management function, an energy savings function, a cell outage function, a cellular coverage function, a handoff function, a load-balancing function, an Inter-Cell Interference Coordination (ICIC) function, a Random Access Channel (RACH) function, a capacity function, or the like. A SON provides a network operator with a path to increase network performance with less effort, enables reductions in Operating Expenditure (OPEX), enables relatively rapid adaptation to network conditions, enables increases in network quality, and so forth.

Abstract: A short-range wireless communication network may be established by direct communication between two or more wireless communication devices A conventional cellular telephone includes an integrated short-range transceiver The short-range transceivers of multiple wireless communication devices can be coupled together to form a short-range communication network without utilizing any wireless communication network supported by wireless service providers The short-range communication network may be extended as additional devices come within range or consolidated as wireless communication devices leave the communication range The short-range communication network is built upon the proximity of wireless communication devices with each other Data is disseminated between the wireless communication devices using a data message synchronization process Messages may also be carried from one wireless network to another as the communication devices are carried by individuals

Abstract: Recent studies about climate change are mandating a drastic reduction of green house gas (GHG) emissions. Solutions include the utilization of renewable energy sources (e.g., wind, solar energy) and the increased utilization of hybrid and electric vehicles (EVs). In this scenario ICT can play a significant role by fostering the smart utilization of current energy and transportation infrastructures (smart grid and smart cities). This paper presents a new ICT infrastructure to enable the intelligent exploitation of distributed energy resources in order to minimize the EV charging times while optimizing the efficiency of the electrical infrastructure. The proposed system is based on a distributed communication infrastructure (both wired and wireless) aimed at collecting/emitting bidirectional energy dispatching opportunities for electric vehicles. The envisaged system seamlessly interconnects emerging self-organizing wireless technologies (i.e., VANETs and Wireless Mesh Networks), with legacy wired communication technologies, to guarantee a fast rollout of the EV charging service with minimum investments in communication infrastructures. The performance of the proposed solution is evaluated in terms of its sustainability by analyzing the quality of the charging service as perceived by the users, and the capability of the charging infrastructure to meet the charging requests in a timely manner.

Abstract: Frequency selective transmission within single user, multiple user, multiple access, and/or MIMO wireless communications. Adaptation among different respective sub-channels and/or channels is effectuated within a wireless communication system. Such a wireless communication system may include an access point (AP) and one or more wireless stations (STAs). The respective channelization employed for various communications between the devices within such a wireless communication system may be adapted based upon any of a number of considerations. For example, a receiver communication device may indicate to a transmitter communication device one or more preferred sub-channels and/or channels on which subsequent communications are to be performed. Alternatively, a transmitter communication device may employ such information provided from one or more receiver communication devices as one of multiple respective considerations regarding which one or more sub-channels and/or channels on which subsequent communications are to be performed.

Abstract: Macrocell communication resources are assigned for device-to-device (D2D) communication between two wireless communication user equipment (UE) devices. A scheduler in a communication system schedules (assigns) scheduled downlink communication resources for downlink transmission of signals from a base station, schedules (assigns) scheduled uplink communication resources for uplink communication from wireless communication (UE) devices to base stations, and schedules (assigns) (D2D) communication resources for (D2D) communication between wireless communication (UE) devices. The (D2D) communication resources are selected from either defined downlink communication resources or defined uplink communication resources that are defined by communication specification. The base station sends communication resource allocation (CRA) information to at least one of the wireless communication (UE) devices where the communication resource allocation information identifies the (D2D) communication resources for use by the wireless communication (UE) devices to communicate through a device-to-device (D2D) communication link.

Abstract: Method, apparatus, and computer program product example embodiments enable devices to disconnect a communication connection In an example embodiment, a method includes measuring, by an apparatus, a power level of one or more wireless communication messages received from a selected wireless device over a wireless communication connection, after an interval following an establishment of the wireless communication connection; and disconnecting, by the apparatus, the wireless communication connection with the selected wireless device, if the one or more wireless communication messages received over the wireless communication connection, has a measured power level greater than a threshold value

Abstract: Systems, methods, and apparatuses for initiation of inter-device communication in wireless communication systems are provided. Both a user equipment (UE) and a network entity may initiate a direct inter-device communication link between UEs located in proximity. The UE may simultaneously maintain an active communication link with its serving base station while communicating with other UEs over the inter-device communication link. Long term evolution (LTE) downlink or uplink radio resources may be used for communications over the inter-device communication link.

Abstract: A converged network is described. The converged network includes a distributed antenna system hub coupled to the communication lines for wireless communications, horizontal cabling to carry communication lines for wired communications and wireless communications and a remote socket. The horizontal cabling is a duct that carries the wired and wireless communication lines to convey the telecommunication signals within the building. The remote socket connects the wireless communication lines with a remote electronics unit. In addition, one or more antennas can also be coupled to the remote socket to convey analog RF electrical radiation from the remote socket over adhesive backed coaxial cabling to the indoor environment.

Abstract: Systems, methods, and apparatuses for inter-device communication in wireless communication systems are provided. A user equipment (UE) may initiate a direct inter-device communication link between UEs located in proximity. The UEs participating in the inter-device communications may perform a device handshake procedure or a device discovery procedure to set up appropriate transmission parameters for the communication over the inter-device communication link. A device-to-device radio network temporary identification (DD-RNTI) may be used for the inter-device communication link. Long term evolution (LTE) downlink or uplink radio resources may be used for communications over the inter-device communication link.

Abstract: Wireless networks initially inherited the traditional layered architecture from wired networks. Nevertheless, as third and fourth generation wireless communications and networking begin to proliferate in the area of communication networks, the suitability of the layered architecture is coming under close scrutiny from the research community. It is repeatedly argued that although layered architectures have served well for wired networks, they might not be suitable for wireless networks [1]. One of the key challenges for next-generation broadband wireless networks is to devise end-to-end protocol solutions across wired and wireless networks to accommodate large densities of highly mobile users demanding services and applications with a wide range of Quality of Service (QoS) requirements. Hence, in order to meet the challenging demands on future wireless networks, it may be required to adopt new approaches in which protocols can be designed by violating the reference layered architecture allowing direct communication between protocols in nonadjacent layers Such violations of a layered architecture have been termed as cross-layer design(CLD).

Abstract: Machine-to-Machine (M2M) communications are expected to include billions of smart devices in the next three to five years. However, existing communication standards are incapable of providing satisfactory performance for M2M traffic. In this paper, we outline some advances that will enable existing wireless personal area networks, in conjunction with existing cellular communication standards, to be adapted to the needs of M2M traffic.

Abstract: A first communication unit performs a non-contact communication with an external device and receives setting data from the external device. A second communication unit performs a wireless communication with the external device. A control unit establishes the wireless communication between the second communication unit and the external device by using the setting data. A data processing unit stores the setting data in a storage unit before the wireless communication is released. A communication releasing unit releases the wireless communication. The control unit uses the setting data stored in the storage unit at a time of re-performing a wireless communication between the second communication unit and the external device. The communication releasing unit releases the wireless communication when the power is not being supplied via a power input unit to which power is input from outside.

Abstract: The current goal for real-time communication infrastructure in factory automation is to merge and balance the best of both worlds, i. e. the reliability of wired networks, and the flexibility of wireless technologies. Hybrid wired-wireless networks are proposed for establishing real-time communication infrastructures in factory automation. However, the provisioning of synchronized clocks is often taken for granted, and issues regarding the integration of wired and wireless synchronization are neglected. In this study, the requirements for providing clock synchronization for such networks are investigated for an IEEE 802.11 WLAN-based hybrid network with IEEE 1588 as the desired synchronization protocol. The paper also presents simulation and implementation results to assess the synchronization performance of WLAN-based hybrid networks.

Abstract: Devices, systems, articles of manufacture, and methods for restricting access to a communication channel are described. According to some embodiments, a message with access restriction data addressed to at least one wireless communication device is generated. The access restriction data indicates that a group of wireless communication devices is associated with a priority value and that the group of wireless communication devices has restricted access to a communication channel. The message is transmitted to the at least one wireless communication device. Other aspects, embodiments and features are also claimed and described.

Abstract: Supervisory Control and Data Acquisition (SCADA) systems are critically important to the procedure of modernization of contemporary power systems, industries etc. A SCADA system involves the integrated technologies of computer, communication, electric devices etc. Electric utilities are expected to choose the communication media best suited for the characteristics of distribution facilities. The communications systems provide the physical medium for transferring, controlling and acquisition of data within SCADA from remote locations. Currently, it is generally recognized that wired communications will serve as the best solution to this problem. Obviously, compared with wired communications, wireless communication presents a number of security and reliability concerns for SCADA system but wireless communications become an attractive option as communication network. In SCADA system the communication system plays a key role and to meet objective of the SCADA system, as a result, various communication media have been applied. In our paper we present a concept about SCADA system using IEEE 802.22 standard where details design of system, analyses of feasibility and benefits over wired and other wireless systems and scopes to enhance the performance are also described. If we apply this system in a large industrial distributed system and in a total railway system, then the total designs are also shown in our paper.

Abstract: Controlling appliances is a main part of automation. The main object of Home automation is to provide a wireless communication link of home appliances to the remote user. The main objective of this work is to make such a system which controls the home appliances remotely. This paper discusses two methods of controlling home appliances one is via voice to text SMS and other is to use the mobile as a remote control, this system will provide a benefit to the elderly and disable people and also to those who are unaware of typing an SMS. General Terms GSM technology, Home Automation System. Keywords GSM, SMS, Home Automation and Voice command. 1. INTRODUCTION Home automation is not a new concept in today‟s world, it is used to provide convenience for user to remotely control and monitor the appliances and it provides a better use of electricity. The efficient use of electricity makes the HOME automation to play an important role in daily life. As by the growth of PC (personal computers), internet, mobile phone and wireless technology makes it easy for a user to remotely access and controls the appliances. A lot of research has been done and many solutions have been proposed to remotely access the HOME appliances. Some of them used internet, wireless technology to communicate and control home appliances, others used Bluetooth and GSM technology for controlling the home appliances. Proposed method reduces the wiring and complexity of the system. It has no geographical limitation and can be used on any GSM network; it provides portability to the system. It is mainly focused on the elderly people, disables and for the people who are unable to type text or face difficulties in typing. For the disable people, it is quite difficult to operate the HOME appliances physically or they are unable or feel uncomfortable to type a text so as to switch on/off the relative device as in [1] [7] [9]. So a system has been developed to monitor the Appliances remotely by simply running the mobile application and giving voice command. The mobile application efficiently converts the voice command to text and transfers it to the GSM network. It is affordable to everyone, cheap and easy to install. As there is no wired communication between the remote user and appliances control module and the electronic devices used to control are easily available making it a cost effective solution. The technology used to develop the system is Java for mobile and MPLAB for microchip family of controller, and Bluetooth interface for wireless communication between home mobile and hardware control module.

Abstract: Embodiments of the invention relate to device/service discovery and channel access control for peer-to-peer wireless communication systems. One embodiment comprises communication in a wireless communication network, by monitoring one or more broadcast channels utilized by one or more wireless communication devices, and based on said monitoring, obtaining information related to said one or more wireless devices. Said communication further includes providing the obtained information to said one or more wireless communication devices for establishing device-to-device wireless communication between at least a pair of wireless communication devices. In one embodiment, the device-to-device wireless communication comprises device-to-device wireless communication between a pair of wireless communication devices in a proximity device-to-device network.

Abstract: Some demonstrative embodiments include devices, systems and/or methods of wireless communication discovery. For example, a first wireless communication device may include a wireless communication unit to discover a second wireless communication device according to an asymmetric discovery process, in which the wireless communication unit is to operate in only one first state selected from a searching state and a listening state, while the second wireless communication device is to operate in only one second state selected from the searching state and the listening state.

Abstract: A communication device that includes an authentication unit that authenticates a wireless communication device depending on whether a predetermined authentication condition is satisfied, and a relay unit that relays communication performed by the wireless communication device when the authentication unit successfully authenticates the wireless communication device, comprising: an information transmission and reception unit receiving connected-terminal information, which includes identification information identifying the wireless communication device whose communication is being relayed, held by other communication devices; a recording unit recording the received connected-terminal information; a judging unit judging, when a connection request is received from the wireless communication device, whether the identification information identifying the wireless communication device is included in the recorded connected-terminal information; and a permitting unit permitting relaying of communication performed by the wireless communication device when the identification information of the wireless communication device is included in the recorded connected-terminal information.

Abstract: The present disclosure relates generally to communication systems and more particularly to wired communication systems. One embodiment relates to a network arrangement, comprising at least one master node and plurality of slave nodes coupled to the master node. The master node and slave nodes communicate over a medium (e.g., telephone wiring, coaxial cables, or power lines) with time-variant channel characteristics. The master node includes a processing block to receive inputs from the plurality of slave nodes. The inputs used by the processing block to generate an optimized Time-Division Multiple Access (TDMA) schedule which is broadcast to the plurality of slave nodes. Other methods and systems are also disclosed.

Abstract: Some demonstrative embodiments include devices, systems and/or methods of wirelessly delivering content. For example, a method may include receiving at a first wireless communication device a request from a second wireless communication device via a first communication link of a first wireless communication protocol having a first coverage range, the request indicating requested content to be transferred from the first wireless communication device to the second wireless communication device; transmitting over the first communication link a session-handoff message from the first wireless communication device to the second wireless communication device, the session-handoff message including one or more link-related parameters defining a second wireless communication link of a second wireless communication protocol having a second coverage range, which is greater than the first coverage range; and transmitting the requested content from the first wireless communication device to the second wireless communication device over the second wireless communication link.

Abstract: When wireless communications are performed with other communication devices, an inquiry message to discover other communication devices residing in the vicinity is wirelessly transmitted by having communication ranges altered at a plurality of stages; response messages to the transmitted inquiry message are received; information relating to a receiving state or frequency of receipt of the response messages from the respective communication ranges is preserved with respect to each communication device which is a source of the response message; and based on the preserved information relating to the receiving state or the frequency of receipt of the response messages a communication device to be a connection object for wireless communication is selected. By doing so, when short-range wireless communications are performed, communication services can be performed appropriately between required devices.

Abstract: The invention discloses an intelligent system for managing and scheduling taxis, which comprises a server system for managing and scheduling the taxis, taxi-mounted terminals, passenger terminals, a location satellite, a yellow page database, a wireless communication network charging system, a wired communication network charging system and a public electronic communication network, wherein electronic communication among the server system, the taxi-mounted terminals, the passenger terminals, the location satellite, the yellow page database, the wireless communication network charging system, the wired communication network charging system and the public electronic communication network is used for managing and scheduling the taxis. The initial states of the taxis which are controlled by the server system are states of waiting to be provided with transporting services, and the initial state of one taxi subjected to site stopping, telecommunications ordering and relevant operations of a taxi driver becomes setting, leaving for a place of waiting, transporting service (cooperation), transporting service (individual), out of service, waiting for carrying passengers on the way, transporting of on-the-way passengers (cooperation), transporting of on-the-way passengers (individual) and the like. Under the condition that the taxi is in the state of transporting service (cooperation) or transporting of on-the-way passengers (cooperation) and the taxi is not filled with the passengers, cooperation transporting service or cooperation on-the-way passenger transportation that the quantity of the passengers is not more than the vacancy can also be accepted.