148results about "Wireless communication energy reduction" patented technology

A method for updating a location in a wireless communication system is disclosed. The method includes transmitting a request message to enter idle mode, receiving a response message including an Identifier (ID) of a first paging group and an ID of a second paging group in response to the request message, activating a paging group location update timer, when the MS leaves an area of the first paging group, and updating a location according to the paging group location update timer.

Disclosed is a wireless transmitter / receiver provided with: a local oscillator which oscillates at a predetermined local oscillator frequency; a mixer which mixes a local oscillation signal of the local oscillation frequency outputted from an output terminal of the local oscillator and a radio signal received by an antenna; a modulation circuit which modulates the local oscillator signal and generates a radio signal; and a transmission / reception switching unit which selectively switches over between a reception state in which the output terminal of the local oscillator is connected to the mixer and a transmission state in which the output terminal is connected to the antenna without passing through the mixer.

According to one aspect of the present invention, a controller is coupled to at least first and second signal processors (at least one of which includes analog demodulation circuitry and another of which includes digital demodulation circuitry). The controller may operate to disable the first signal processor responsive to a control signal that indicates that a second signal (corresponding to a demodulator output) is available from the second signal processor.

A low power consumption protocol for low power communication devices attached to an asynchronous network is described. In this protocol, a communication device is used as a high communication duty cycle Mediation Device (MD), thus permitting other communication devices to use a low communication duty cycle framing structure. The MD functions as a storage and retrieval service for messages between two devices when one device is not able to communicate. When the previously unavailable device becomes available, it can check in with the MD to retrieve any missed messages and respond to these messages accordingly. In a communication network, each of the low power communication devices can be configured to behave as MD's for a small amount of time. Sharing this responsibility among all communication devices in the network allows each device to maintain an low average communication duty cycle. This technique is applicable to a low power, low cost, zero-configuring, self-organizing, asynchronous network.

A method of awaking a communication device operating in a sleep mode for a wireless network interface card includes continuously sending a plurality of coupling packets to maintain coupling between the communication device and a remote communication device, receiving a wireless packet from the remote communication device, determining a packet type of the wireless packet according to a packet format corresponding to a wake-up packet, and controlling the communication device to leave the sleep mode when the wireless packet is determined to be the wake-up packet.

An apparatus for indicating an idle mode in a mobile terminal is provided. The apparatus comprises at least one illuminator for illuminating a designated key on a keypad of a mobile communication terminal; and a control unit for turning on the illuminator for the designated key when the mobile terminal is in an idle mode.

An apparatus and method for displaying a standby screen of a mobile terminal, the apparatus having a display for displaying an image, and a controller for measuring a color-distributed degree of the image when a terminal is converted into a standby mode, and for inverting a certain color of the image when the certain color is distributed by more than a predetermined amount. The power consumed in displaying can effectively be reduced by lowering an grayscale of an image to display it or inverting the color of the image to display it.

A system and method for operating a wireless network provides for sending a wakeup tone, periodically waking up from a sleep mode to listen for the wakeup tone, upon receiving the wakeup tone, listening for at least one second tone, the at least one second tone being one of (i) a tone in a frequency different from the wakeup tone and (ii) a pattern of tones including at least one frequency different from the wakeup tone, and upon receiving the at least one second tone, performing an action based on the at least one second tone.

A method and system for securely delivering goods to a recipient is disclosed. The method and system include an input device having a tilt plate comprising a front side and a back side. The front side includes an outer touch surface. The back side includes electronic components mounted thereon and a raised center pivot, a plurality of spring loaded switches mounted thereon disposed around the periphery of the back side. Pressing the outer touch surface proximate its periphery in a sequence causes two or more of the spring-loaded switches to be activated. The system further includes at least one processor adapted to receive signals from the input device and compare the sequence entered by a delivery agent with a predetermined sequence as part of an access code associated with an order of goods for the recipient, and to grant access to an enclosure of the recipient if the sequence entered by the delivery agent matches the predetermined sequence.

Apparatus, device, methods and system relating to a vehicular telemetry environment for identifying in real time unpredictable network communication faults based upon pre-processed raw telematics big data logs that may include GPS data and an indication of vehicle status data, and supplemental data that may further include location data and network data.

An electronic device includes a communication unit which performs transmission / reception of data through a wireless network, and an application processing unit which executes an application processing. While the application processing is not required, the application processing unit is in a sleep state or a stand-by state.

An intelligent air-conditioning controlling system comprises an intelligent controlling device, an air-conditioning, a plurality of sensing devices, and a cloud server. The intelligent controlling device receives environment information and user information from the plurality of sensing devices, and calculates a target temperature. The cloud server retrieves a usage record of a user according to the user information, and executes a big data analysis for generating a historical record and recommended environment temperature according to historical data and the environment information. The intelligent controlling device receives the usage record, the historical record and recommended environment temperature and a control parameter from the cloud server, and generates a control command for the air-conditioning in accordance with the target temperature, the usage record, the historical record and recommended environment temperature and the control parameter.

In an information processing apparatus, an open / close detecting driver detects whether the information processing apparatus is opened or closed. If the open / close detecting driver detects that the information processing apparatus is opened or closed, an open / close-event handler determines whether the information processing apparatus is in an unused state. On the basis of this determination, the open / close-event handler controls lighting of a backlight.

The present invention relates to a mobile terminal capable of providing path information, and a control method therefor. The mobile terminal according to one embodiment of the present invention comprises: a camera; and a control unit for activating, if an event occurs, the camera, detecting whether the mobile terminal is in a vehicle-mounted state and whether the vehicle is traveling by using images received through the camera and, if it is determined, according to the detection result, that the vehicle is traveling in a state in which the mobile terminal is mounted on the vehicle, activating a gesture function of controlling the event by recognizing a gesture of a user.

Provided are a user authenticating electrical outlet or connector by which there is no standby power consumption, a power mediating module for receiving power from the electrical outlet or connector and supplying the same to a power consuming device, and the power consuming device that is provided with the power mediating module or receives power via the power mediating module. A user authenticating electrical outlet or connector according to an embodiment of the present invention comprises: an authenticating terminal for receiving authenticating power for user authentication and a transmitted electrical outlet operating password; an authenticating device operated by the authenticating power and determining whether the electrical outlet operating password corresponds to electrical outlet ID information; and a micro-current limiting device for allowing a micro-current to flow when a power consuming device is connected to the user authenticating electrical outlet or connector. The authenticating power is obtained from the micro-current and is supplied from the outside via the authenticating terminal. When the electrical outlet operating password corresponds to the electrical outlet ID information, main power for the power consuming device is supplied from the main power supply to the outside.

A sensor network system and method for establishing a data transmission path are is disclosed. The method for establishing a data transmission path of a sink node and the network system which includes a plurality of nodes including the sink node, includes a) requesting nodes on a previously established data transmission path to give their adjacent node information, b) receiving the adjacent node information, c) retrieving adjacent nodes as the sink node moves, and d) reestablishing the data transmission path through the result of retrieval and the adjacent node information. Since the data transmission path isreestablished without flooding, it is possible to reduce energy of the nodes. Also, the method for establishing a data transmission path can be applied to any routing protocols without additional conditions.

Disclosed are a method and an apparatus for operating based on a power save mode in a wireless LAN. The method for operating based on the power save mode in a wireless LAN may comprise the steps of: an STA receiving, from an AP, a beacon frame from a beacon frame time resource for the beacon frame, wherein a TIM included in the beacon frame indicates pending downlink data for the STA; the STA maintaining a sleep mode after receiving the beacon frame and until a monitoring start time resource for the downlink frame for delivering downlink data; and the STA receiving, from the AP, the downlink frame from a listen window including the monitoring start time resource.