Patent application number | Description | Published |
20090157225 | DETECTING APPARATUS AND METHOD OF ROBOT CLEANER - A detecting apparatus and method of a robot cleaner is disclosed. The apparatus includes a detecting unit provided with a transmitting unit for sending a signal to detect the floor and a receiving unit for receiving a signal sent from the transmitting unit to be reflected on the floors an optic angle adjusting unit disposed at least one of the transmitting unit and the receiving unit and configured to adjust optic angles of the signals, and a light shielding unit configured to partially shield a signal sent through the optic angle adjusting unit in order to reduce a deviation of each signal of the transmitting unit and the receiving unit. Accordingly, a measurement deviation with respect to color and feel of the floor can be reduced. Also, an amount of light received at the receiving unit can be obtained as much as required, which allows an accurate detection of the detecting apparatus. In addition, even if there are both drop-off and bump on the floor, the robot cleaner can smoothly operate. | 06-18-2009 |
20090279714 | APPARATUS AND METHOD FOR LOCALIZING SOUND SOURCE IN ROBOT - An apparatus and method for localizing a sound source in a robot are provided. The apparatus includes a microphone unit implemented by one or more microphones, which picks up a sound from a three-dimensional space. The apparatus also includes a sound source localizer for determining a position of the sound source in accordance with Time-Difference of Arrivals (TDOAs) and a highest power of the sound picked up by the microphone unit. Thus, the robot can rapidly and accurately localize the sound source in the three-dimensional space with minimum dead space, using a minimum number of microphones. | 11-12-2009 |
20110002466 | CLIENT APPARATUS FOR SUPPORTING MOBILITY AND SECURITY BETWEEN HETEROGENEOUS NETWORKS USING MOBIKE PROTOCOL - A client apparatus includes a wireless network access unit configured to access wireless networks, a packet analysis unit configured to analyze uplink and downlink data packets, a security tunnel processor configured to establish a mobile security tunnel and to maintain the established mobile security tunnel when handover is performed in heterogeneous networks, a wireless network controller configured to control a wireless network accessing process and a connection releasing process of the wireless network access unit, a mobile security tunnel controller configured to perform a MOBIKE protocol and to control a process of establishing and maintaining a mobile security tunnel of the security tunnel processor, and a wireless network connection manager configured to request the mobile security tunnel controller to perform a MOBIKE protocol by managing MOBIKE information and to control handover by setting up and managing a wireless network access policy. | 01-06-2011 |
20110103349 | METHOD AND SYSTEM FOR PROCESSING HANDOVER IN HETEROGENEOUS MOBILITY PROTOCOL MIXED NETWORKS AND MIP CLIENT DEVICE - Provided are a method for processing handover to provide IP mobility for mobile user equipment, a system thereof, and a Mobile IP (MIP) client device. The method processing handover at a home agent in a heterogeneous protocol mixed network includes: at a home agent, creating a Proxy Mobile IP (PMIP) tunnel when user equipment accesses a PMIP network; at the home agent, creating a Client Mobile IP (CMIP) tunnel when a CMIP network is accessed due to handover of the user equipment; and at the home agent, severing the PMIP tunnel when the user equipment completes performing handover. | 05-05-2011 |
20110317662 | SYSTEM AND METHOD FOR PERFORMING HANDOFF BETWEEN DIFFERENT TYPES OF NETWORKS BY USING A VOICE SERVICE - A system and method for handing off from a first network to a second network. A determination may be made as to whether an accessible base station of the second network is located in the vicinity of a user equipment based on information on a current location of the user equipment in the first network. An activation call may be generated with a first telephone number as a caller number when an accessible base station of the second network is located in the vicinity of the user equipment based on the determination result. The activation call indicates an initiation of a search for an accessible base station of the second network, and an accessible base station of the second network may be searched for when the activation call with the first telephone number is received. A handoff from the first network to the second network may then be executed when the accessible base station of the second network is located. | 12-29-2011 |
20110317663 | SYSTEM AND METHOD FOR PERFORMING HANDOFF BETWEEN DIFFERENT TYPES OF NETWORKS BY USING A SHORT MESSAGE SERVICE - A system and method for handing off from a first network to a second network. A determination may be made as to whether an accessible base station of the second network is located in the vicinity of a user equipment based on information on a current location of the user equipment in the first network. An activation message may be generated with a first telephone number as a caller number when an accessible base station of the second network is located in the vicinity of the user equipment based on the determination result. The activation message indicates an initiation of a search for an accessible base station of the second network, and an accessible base station of the second network may be searched for when the activation message with the first telephone number is received. A handoff from the first network to the second network may then be executed when the accessible base station of the second network is located. | 12-29-2011 |
20120076111 | METHOD AND SYSTEM FOR PROCESSING HANDOVER IN HETEROGENEOUS MOBILITY PROTOCOL MIXED NETWORKS AND MIP CLIENT DEVICE - A method for processing handover to provide IP mobility for mobile user equipment, a system thereof, and a Mobile IP (MIP) client device using the same method. The method processing handover at a home agent in a heterogeneous protocol mixed network includes: at a home agent, creating a Proxy Mobile IP (PMIP) tunnel when user equipment accesses a PMIP network; at the home agent, creating a Client Mobile IP (CMIP) tunnel when a CMIP network is accessed due to handover of the user equipment; and at the home agent, severing the PMIP tunnel when the user equipment completes performing handover. | 03-29-2012 |
20140071918 | RECEPTION AND CONFIGURATION OF DOWNLINK CONTROL CHANNEL - The disclosure is related to reception and configuration of a downlink control channel. Particularly, the present disclosure relates to a method and an apparatus (e.g., user equipment) for receiving a downlink control channel located in a data region, and a method and an apparatus (e.g., a transmission/reception point) for configuring and transmitting the downlink control channel. | 03-13-2014 |
20140078942 | TRANSMITTING AND RECEIVING UPLINK CONTROL CHANNEL - The disclosure is related to transmitting a control channel, multiplexing an uplink control channel, and multiplexing a sounding reference signal for user equipment configured with carrier aggregation. | 03-20-2014 |
20140078983 | TRANSMISSION AND RECEPTION OF CONTROL INFORMATION - The disclosure is related to transmitting control information in a transmission/reception point and to receiving the control information in user equipment. Particularly, the present disclosure relates to transmitting the control information for user equipment which receives downlink control information through a downlink control channel newly defined in a data region. Furthermore, the present disclosure relates to performing a resource mapping for enhanced control channel elements (ECCEs) of an enhanced physical downlink control channel (EPDCCH). | 03-20-2014 |
20140078987 | TRANSMISSION AND RECEPTION OF CONTROL INFORMATION - The disclosure is related to transmitting control information in a transmission/reception point and to receiving the control information in user equipment. Particularly, the present disclosure relates to transmitting the control information for user equipment which receives downlink control information through a downlink control channel newly defined in a data region. Furthermore, the present disclosure relates to performing a resource mapping for enhanced control channel elements (ECCEs) of an enhanced physical downlink control channel (EPDCCH). | 03-20-2014 |
20140092836 | ADJUSTING BLIND DECODING OF DOWNLINK CONTROL CHANNEL - The present disclosure is related to adjusting a blind decoding of a downlink control channel in a base station. A method of adjusting a blind decoding of a downlink control channel may include creating an enhanced physical downlink control channel (EPDCCH) using the number of EPDCCH candidates per aggregation level (AL) in each of one or more EPDCCH sets for user equipment; and transmitting the created EPDCCH to the user equipment. Herein, the number of EPDCCH candidates is determined based on at least one of (i) a resource size associated with configuration of each EPDCCH set and (ii) the total number of EPDCCH sets. | 04-03-2014 |
20140105130 | CONTROLLING UPLINK POWER - The disclosure is related to multiplexing an uplink channel and an uplink reference signal transmitted on uplink, and controlling an uplink power, in user equipment in the case of carrier aggregation. | 04-17-2014 |
20140105141 | CONTROLLING UPLINK POWER - The disclosure is related to multiplexing an uplink channel and an uplink reference signal transmitted on uplink, and controlling an uplink power, in user equipment in the case of carrier aggregation. | 04-17-2014 |
20150085658 | METHOD AND APPARATUS FOR CONTROLLING ACCESS TO MACHINE-TYPE COMMUNICATION DEVICE HAVING DUAL PRIORITY APPLICATION - A method for controlling access to a machine-type communication (MTC) device having a dual priority application in a mobile communication network. More particularly, a signaling method executed in a terminal configured to perform non-access stratum (NAS) signaling including low access priority indication in a mobile communication network and configured such that the low access priority is negligible. The signaling method may include performing one of a procedure of mobility management and a session management including the low access priority, receiving a back-off timer due to one of mobility management congestion control and session management congestion control and operating the back-off timer, and performing one of the mobility management procedure and the session management procedure without including the low access priority. | 03-26-2015 |