Patent application number | Description | Published |
20090054013 | Transmitter and Transmitting Method Thereof In Wireless Communication System - A transmitter and a transmitting method of a wireless communication system are provided. The transmitter transmits RF signals using an outphasing scheme of converting one analog IF NC-EMS into two analog C-EMSs. In the transmitter, a baseband processor generates a baseband digital modulated I-signal and a baseband digital modulated Q-signal. A signal converter converts the baseband digital modulated I-signal and the baseband digital modulated Q-signal into a baseband analog modulated I-signal and a baseband analog modulated Q-signal. An IF processor up-converts the baseband analog modulated I-signal and the baseband analog modulated Q-signal to generate one analog IF NC-EMS. A signal component separator separates the analog IF NC-EMS into a first analog IF C-EMS and a second analog IF C-EMS. An RF processor up-converts the first analog IF C-EMS and the second analog IF C-EMS to generate a first analog RF C-EMS and a second analog RF C-EMS. A power amplifier amplifies powers of the first and second analog RF C-EMSs. An RF combiner combines the first and second analog RF C-EMSs having the amplified powers to generate one combined analog RF C-EMS. | 02-26-2009 |
20090054014 | Transmitter and Transmitting Method Thereof In Wireless Communication System - A transmitter and a transmitting method of a wireless communication system are provided. The transmitter transmits RF signals using an outphasing scheme of converting one analog IF NC-EMS into two analog C-EMSs. In the transmitter, a baseband processor generates a baseband digital modulated I-signal and a baseband digital modulated Q-signal. An IF processor up-converts the baseband digital modulated I-signal and the baseband digital modulated Q-signal to generate one digital IF NC-EMS. A signal component separator separates the digital IF NC-EMS into a first digital IF C-EMS and a second digital IF C-EMS. An RF processor up-converts the first digital IF C-EMS and the second digital IF C-EMS to generate a first analog RF C-EMS and a second analog RF C-EMS. A power amplifier amplifies powers of the first and second analog RF C-EMSs. An RF combiner combines the first and second analog RF C-EMSs having the amplified powers to generate one combined analog RF C-EMS. | 02-26-2009 |
20110149843 | APPARATUS AND METHOD FOR CONTROLLING OPERATION STATE OF PHYSICAL LAYER - An apparatus for controlling IEEE 802.15.4 physical layer operation state is provided. The physical layer operation state controlling apparatus defines an operation state of a physical layer including a Hardwired Low-MAC (HL-MAC) device in which functions of IEEE 802.15.4 MAC layer are hardwired, and includes a state module for controlling the operation state of the physical layer. The state module includes a Finite State Machine (FSM) for, when receiving an event for the operation state of the physical layer, transiting to a state module corresponding to the event and controlling the operation state of the physical layer; and an interrupt handler for converting an interrupt received from the physical layer to the event corresponding to a register of the state module and sending the event to the FSM. Hence, by means of the state machine for the IEEE 802.15.4 PHY, the IEEE 802.15.4 physical layer operation state can be controlled to optimize the operations of the upper MAC. | 06-23-2011 |
20120236855 | METHOD FOR CONTROLLING MULTI-SINK/MULTI-PATH ROUTING SENSOR NETWORK AND SENSOR NETWORK USING THE SAME - A method for controlling a multi-sink/multi-path routing sensor network and a sensor network system using the same are provided. The method for controlling the sensor network includes generating, at a sensor node, sensing data; transmitting, at the sensor node, the sensing data to a plurality of sink nodes; and forwarding, at the sink nodes receiving the sensing data from the sensor node, the sensing data to a gateway. Hence, it is possible to satisfy the reliability required in the safety-critical system with the minimum traffic. Both of the two conflicting requirements which are the reliability enhancement of the sensor network and the minimization of the network traffic in the repeated data transmission, can be satisfied adequately. | 09-20-2012 |
20130315039 | METHOD FOR CONTROLLING WAKE-UP OF SOUND WAVE-BASED WIRELESS NETWORK AND WIRELESS SENSOR NETWORK USING THE SAME - A method for controlling wake-up of a sound wave-based wireless network and a wireless sensor network using the same are provided. A wireless device constituting the wireless sensor network is woken up by receiving a sound wave from an external device and receives data, or wakes up an external device by transmitting a sound wave and transmits data. Since wake-up is controlled by a sound wave through a microphone and a speaker which consume less power, a time that an RF transceiver spends staying in a reception standby state is minimized and power consumption at a wireless sensor node is minimized. | 11-28-2013 |
20140108943 | METHOD FOR BROWSING INTERNET OF THINGS AND APPARATUS USING THE SAME - A method for browsing Internet of things (IoT) and an apparatus using the same are provided. In the method for browsing IoT, when a mobile device executes a browser, the browser receives information on IoT devices and displays the IoT devices on a map in the form of an icon. Accordingly, the browser displays the IoT devices on the map in the form of an icon, and provides various IoT services, so that the user can easily search for many IoT devices, connect them and receive services. | 04-17-2014 |
20140331144 | METHOD AND SYSTEM FOR PROVIDING NUI - A method and system for providing a Network-based User Interface (NUI) is provided. The method for providing the NUI includes: selecting one from among devices connected to a network; acquiring a UI regarding the selected device through the network; and interacting with the device by using the acquired UI. Accordingly, the user terminal can acquire the UI regarding the device connected to the network through the network and interact with the device, so that the user can easily manipulate the device at a remote distance and can easily grasp the statue of the device. | 11-06-2014 |
20150201022 | METHOD FOR PROVIDING INTERNET OF THINGS SERVICE - A method for providing an IoT service is provided. The method for providing the IoT service may provide the IoT service by using a D-platform, a P-platform, an M-platform, and an S-platform, and thus may provide an open type IoT service. Therefore, an IoT service developer may reduce the time and cost required to develop and an IoT service user may access the IoT service intuitively and systematically. | 07-16-2015 |