91results 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.

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.

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.

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.