93results about "In ad hoc networks" patented technology

Systems and methods for supporting variable beacon timing for a first wireless device and a second wireless device are provided. An exemplary system may include a number of wireless devices configured to wirelessly communicate with one another. The system includes a beacon-transmitting wireless device and a listening wireless device. The beacon-transmitting wireless device is configured to transmit, during a first operating mode, wireless beacons separated in time by relatively long time intervals. The beacon-transmitting device is also configured to transmit, during a second operating mode, wireless beacons separated in time by relatively short time intervals. The listening wireless device is configured to listen, during the first operating mode, for wireless beacons transmitted by the beacon-transmitting wireless device, and is configured to listen, during the second operating mode, for wireless beacons transmitted by the beacon-transmitting wireless device. The system may have more than two different operating modes, which may be desirable if the number of wireless devices in the system exceeds two.

Provided is a radio communication method which can reduce the power consumption as compared to the conventional technique while realizing coexistence of a plurality of radio communication methods and can perform synchronization with a super frame of other radio communication device. The super frame has life confirmation slots (2820, 2830) through which radio communication devices of various modulation types should transmit tone signals. A radio communication device has a chance to judge whether one or more radio communication devices using a different modulation type exist or no such device exists in the vicinity. If no such device exists, the slot to be used by the radio communication device of the modulation method is reported as a time that can be used by a radio communication group of other modulation method. Thus, by confirming existence of an object in the vicinity by other radio communication device with which communication cannot be performed, communication can be performed by sharing the super frame.

A mobile station capable of accessing a wireless communication network having a plurality of base stations is provided. The mobile station is configured to determine if a battery level of the mobile station is below a selected one of a plurality of power level thresholds. The mobile station is also configured to, upon a determination that the battery level is below the selected power level threshold, send a battery report to a first base station of the wireless communication network. The mobile station is further configured to enter a battery power preservation mode. The battery power preservation mode may include an enhanced idle mode, an enhanced sleep mode, or a persistent allocation mode.

A loss prevention system containing a Bluetooth transceiver and a motion detection system monitors the presence of a portable electronic device such as a cell phone in the vicinity and alerts when that device leaves its vicinity. The system transceiver is activated upon detecting a movement and turned off after a check is done in order to conserve battery.

The disclosure generally relates to a method and apparatus for Low-Energy Bluetooth (BLE) synchronization. In one embodiment, the disclosure enables BLE devices enabled with both BLE and IEEE 802.11 radios to synchronization using a non-BLE beacon signal. The beacon signal and available shared information between corresponding BLE devices are used to synchronize the BLE devices. In an exemplary method, the first BLE device receives a beacon signal having a reference timestamp and determines a first time-offset as a function of the reference timestamp. The first BLE device then selects an event time window as a function of the first time-offset and conducts a BLE event (advertising or scanning) during the event time window. The second BLE device also uses the beacon signal and the shared information to complement the first device's event by one of advertising or scanning.

A method for sending packet data is provided, which includes the following steps. Packet data from a source mobile station (MS) is received. The packet data includes an identity of a destination MS. A routing cache table is searched for a path to the destination MS. An interface is selected if the path to the destination MS is found. The packet data is forwarded through the selected interface according to the found path. Other two methods for sending packet data corresponding to the method for sending packet data as well as an MS and a base station (BS) corresponding to the method for sending packet data are provided. Therefore, link processing can be performed at the MS.

Devices and methods of limiting wideband STA communication are generally described. The STA receives, over a primary channel, a wakeup frame containing an indication of a SP or CBAP to acquire a wideband TXOP over a wide bandwidth channel including the primary channel and a secondary channel and a control trailer having an indication of the wide bandwidth channel. Prior to the SP / CBAP, the STA opens reception from the primary channel to the wide bandwidth channel. The STA then communicates with another STA over the wide bandwidth channel and subsequently reduces reception from the wide bandwidth channel to the primary channel. The wakeup frame originates from an AP / PCP or the other STA, and contains fields indicating the wakeup frame length and SP or a sensing time length prior to the CBAP.

A mobile terminal including a short-range communication module configured to provide short-range wireless communication; a touch screen; and a controller configured to deactivate the touch screen and enter the mobile terminal into a lock state, detect the mobile terminal is tilted more than a predetermined slope, receive a first touch input on the deactivated touch screen, and control the short-range communication module to transmit a first IR signal to an external device for controlling the external device when the first touch input matches a predetermined password for unlocking the mobile terminal into an unlocked state.

A split-able mobile device includes a parsed mobile device (PMD) and a pre-associated peer partner (PPP) that enables communication with networks when the PMD is in the vicinity of the PPP. The PMD locates the PPP and enters into peer mode. In peer mode, the PMD shares a function or operation with the PPP to reduce power costs or to alleviate overhead constraints. The PPP accesses a separate power source than the PMD and can provide greater service to a user without compromising performance of the PMD. If the PPP cannot be located, then the PMD enters a solo mode.

A power management method for a handheld mobile computing and communication device for a normal and an emergency occasion is disclosed. The device, for example, is useful for a trapped person under a mound of debris created by a fallen building during an earthquake or a terrorist attack. The invention is based upon a conventional mobile communication device with a second communication unit and a sensory unit. The second communication unit is based upon a short-range and ad hoc communication network. The invention is characterized by that a power management unit is used to monitor the remaining power of a battery system for the mobile device. If the power is below a preset threshold, the main function of the mobile device as a mobile phone is switched off and the reserved power is used to supply power for the second communication unit, which consumes much less power, in particularly, in a mode as a receiver only. An authorized signal, delivered by a nearby mobile rescue station and received by the second communication unit, will trigger the power management unit to provide additional power to activate the sensory unit. The sensory unit such as an accelerometer and / or a gyroscope may detect a signal if the person touches and / or moves the device after receiving a triggering signal. Yet additional power is further supplied to send collected data through the second communication unit to the rescue station.

A method, wireless device and computer program product for expanding the coverage of a cellular network. A wireless device (e.g., cellular telephone) is able to communicate with a base station in a cell of the cellular network over a non-cellular interface via another wireless device in a cell through the use of multi-hopping. A wireless device may request permission to communicate with the base station over a non-cellular interface via hopping off another wireless device when its signal strength is below a threshold. Alternatively, a wireless device may receive a request to communicate with the base station over a non-cellular interface via hopping off the wireless device that sent the request when that wireless device has excess capacity in its bandwidth with the base station. By enabling wireless devices to communicate with a base station in such a manner, the effective capacity of the cellular network is expanded and the effective capacity of the cellular network is improved.

An electronic lock can enter a lockdown mode in response to a lockdown command comprising a mechanical command, e.g. a button or door handle being pressed on the lock in a predefined time-series sequence, or touching the lock in a time-series sequence). Alternatively, an audio or visual command can be issued, e.g. saying certain words or making a hand gesture. The lock may require additional authentication before executing the lockdown command, e.g. recognizing an authorized electronic key. Other embodiments are also provided.

In embodiments of the present disclosure improved capabilities are described for an RF wireless energy-harvesting device comprising an energy-harvesting mechanism, a message generation facility, and a transmission facility, wherein the RF wireless energy-harvesting device generates electrical energy through the energy harvesting mechanism from a harvesting action, generates a message through the message generation facility, and transmits the message through the transmission facility to a second wireless device, wherein the second wireless device is a second RF wireless energy-harvesting device, a networked device, a mesh network node, or the like.

A first device may configure a second device, such as a sidelink receiver, so that an interference protection zone surrounding the second device may be dynamically adjusted in size based, for example, on various objectives and / or use cases recognized by the first device. The interference protection zone may be, for example, an area surrounding the second device, within which neighboring devices may be silenced. Changes to the interference protection zone may be achieved by providing a dynamic clear-to-send (CTS) transmit power scaling parameter, that is different from a pre-assigned constant parameter for CTS power control stored at the second device, to the second device from the first device. The second device may calculate CTS channel power using at least the dynamic CTS transmit power scaling parameter and the received RTS channel power. The second device may send a CTS message in a CTS channel at the calculated CTS channel power.

A method for enabling access point discovery in a wireless network includes scanning, at an access point, a low energy protocol advertising channel for beacon information broadcasted from a second access point. The low energy protocol advertising channel is associated with a low energy protocol that is different from a first protocol associated with a primary operating channel of the access point. The method further includes receiving the beacon information at the access point via the low energy protocol advertising channel.

A method and system for connecting mobile users to the Internet using cooperative interconnection. A node consists of a network element that has two connections methodologies—typically a node will have a radio link and a wired link to the Internet. To obtain a connection, a member of the service located themselves in proximity to a network node which is commonly provided by another member and the cooperative tunneling agent requests a secure link. All members of the service agree to give connection to the Internet upon request from another member.

A wireless radio communication apparatus and method in which directional transmission, also known as beamforming, training is performed on transmissions between multiple wireless radio communication devices participating in a local network. A sector level sweep (SLS) process uses transmitter sector sweep (TXSS) training, which includes transmitting a sector sweep (SSW) followed by generating sector sweep (SSW) feedback to other nodes in the local network, with optimum transmit sector information being exchanged between nodes. Embodiments include a power save mode, a delayed SSW feedback mode, and an embedded polling and feedback mode.

A computer device may include a memory storing instructions and a processor configured to execute the instructions to select a broadcast method for a wakeup signal for a wireless communication device; instruct a base station to broadcast the wakeup signal using the selected broadcast method; and provide information identifying the selected broadcast method to the wireless communication device. The processor may be further configured to receiving a wakeup request from a machine-type communication interworking function (MTC-IWF) device; map the received wakeup request to a wakeup signature beacon signal associated with the wireless communication device; and instruct the base station to transmit a wakeup signature beacon signal to the wireless communication device based on the received wakeup request.

A wireless monitoring system for monitoring at least one person in a building. The wireless monitoring system comprises a data collection device and a plurality of wireless signalling devices working in a star network topology, the data collection device being adapted to wirelessly receive data transmitted from each of the plurality of wireless signalling devices. The signalling devices and the data collection device being adapted to send and receive FSK modulated signals in a predetermined single channel and the signalling devices being adapted to send data packets such as a heartbeat message to the data collection device.

This disclosure relates to techniques for using wireless link information from baseband to trigger application data activity. According to some embodiments, wireless link information from baseband may be received at an application processor of a wireless device. The wireless link information may indicate whether the wireless link is in a connected state or an idle state. Network activity timing for one or more application network activity requests may be selected based at least in part on the wireless link information. The application network activity may be initiated for the one or more application network activity requests according to the selected network activity timing.

Techniques for managing battery powered devices in a cellular network are described herein. In some instances, a receiving device, such as a data collector, may receive transmissions from a network endpoint, such as a utility meter. The messages may contain an indication of a power level used in the transmission. The receiving device may estimate a battery end-of-life date of the network endpoint, based at least in part on a known reporting schedule of the endpoint and the power level used in transmissions. The receiving device or the endpoint may revise the reporting schedule to modify the battery end-of-life date. In addition to modification of the reporting schedule, the endpoint power of transmission can be modified, based on RSSI and / or a transmission retry count.

An electronic device and a method of transmitting information in an electronic device a provided. The electronic device includes a communication unit that includes a first communication module and a second communication module, wherein the second communication module supports a low-power and short-range communication method; and a processor controls collection of information through the first communication module, and to transmit information related to the collected information through the second communication module.

The invention relates to a mechanism for decreasing power consumption in a wireless terminal intended for a communication system where availability of a common air medium is to be determined by the terminal prior to transmission. The terminal selects at least one communication device as a communicating peer and adjusts receiver performance based on received signal strength and optionally other parameters measured from at least one of the at least one wireless communication device, the receiver performance being adjusted for listening to the at least one wireless communication device with reduced power consumption. The terminal further generates an indication when its own transmission is approaching and readjusts the receiver performance for determining the availability of the common air medium at a performance level enabling detection of devices that may be disturbed by said own transmission.

Systems and methods for controlling devices, including controller and actuators are disclosed. Actuators may be devices where remote control of the device or devices is convenient, such as lights, window shades, fans and similar items. In one method, controllers are adapted to send commands from a first controller to an actuator and to a second controller, and from the second controller to the actuator and to the first controller, where the controllers store a state of the actuator as a result of the actuator executing the command.

A communications device includes a transmitter to transmit signals representing data to an infrastructure equipment of a mobile communications network via a first wireless access interface and to transmit signals via a second wireless access interface to one or more communications apparatus which can act as relay nodes, a receiver to receive signals from the infrastructure equipment via the first wireless access interface and to receive signals via the second wireless access interface from the one or more communications apparatus which can act as relay nodes, and a controller. The controller can form a relay assist request message and with the transmitter and receiver to transmit the relay assist request message on the second wireless access interface for reception by the one or more communications apparatus which can act as relay nodes to assist in communicating signals representing data to the infrastructure equipment via the first wireless access interface.