Patent application number | Description | Published |
20080279358 | Apparatus and method for performing call connection in a communication system - A call connection method and apparatus in a communication system are provided, in which a call connection request message is received from each of first and second terminals, it is determined whether the first and second terminals are requesting a call connection to each other, one of the first and second terminals is selected if the first and second terminals are requesting a call connection to each other, the call connection request of the selected terminal is rejected, and a call is connected between the first and second terminals by performing a call connection to the selected terminal according to the call connection request of the non-selected terminal. | 11-13-2008 |
20090157309 | METHOD FOR EXCHANGING MESSAGES IN A NAVIGATION SYSTEM USING VISIBLE LIGHT COMMUNICATIONS - Method and device for exchanging messages in a VLC navigation system is provided, in which a map server generates a provision message in the form of visible light signals through all lamps in an area, using a PLC network, where a navigation service is provided, a terminal that wants to implement the navigation service among terminals that have received the provision message transmits a registration request message to the map server, the map server transmits a registration response message for the registration request message to the terminal, the terminal transmits a map request message including information about a destination to the map server, the map server transmits a map response message including information about a path to the destination to the terminal, and the terminal displays map information and the path. | 06-18-2009 |
20090171571 | Navigation system and method using visible light communication - A system and method for providing an in-building navigation service using VLC are provided, in which transmitters control lamp modules to generate visible light signals each in a combination of different wavelengths as information for a navigation function, a mobile terminal receives visible light signals from a plurality of lamp modules that illuminate an area where the mobile terminal is located, location information about a current location of the mobile terminal is acquired through the visible light signals received from the plurality of lamp modules, and navigation information including information that matches the location information to map information is displayed on the mobile terminal. | 07-02-2009 |
20090180780 | APPARATUS AND METHOD FOR TRANSMITTING DATA IN WIRELESS VISIBLE LIGHT COMMUNICATION SYSTEM - Disclosed is a method for transmitting data in a wireless visible light communication system, the method including the steps of transmitting a pilot signal for obtaining channel state information according to each channel from a transmitter to a receiver, and transmitting a pilot response signal containing channel state information according to each channel from the receiver to the transmitter; controlling, by the transmitter, a data rate according to the pilot response signal, transmitting, by the transmitter, data to the receiver, with data rate information inserted into a header and controlling, by the receiver, a data rate according to each channel by making reference to data included in the header information. | 07-16-2009 |
20100061395 | SELF-ORGANIZING RESOURCE ACCESS APPARATUS AND METHOD IN LOCAL AREA NETWORK COMMUNICATION ENVIRONMENT - A self-organizing resource access method is provided for transmitting data by self-organizing resource access by each individual node in a Local Area Network (LAN) communication environment where at least two nodes exchange data with each other. A first node listens to at least one data transmission of at least one other node connected to the LAN, and adjusts a data transmission start time of the first node in accordance with a data transmission start time of the at least one other node so that the data transmission start time of the first node does not overlap the data transmission start time of the at least one other node. The first node transmits data to the at least one other node at the adjusted data transmission start time. | 03-11-2010 |
20110007672 | COMMUNICATION METHOD AND APPARATUS IN WIRELESS BODY AREA NETWORK - Short range wireless communication is provided. A first node included in a Wireless Body Area Network (WBAN) communicates with at least one neighboring second node. The first node transmits or receives data to or from at least one device node connected to the first node during a time division communication period, using a super-frame in which the time division communication period, a time division schedule advertisement message transmission period, and a Contention Access Period (CAP) are sequentially arranged. The first node broadcasts a time division schedule advertisement message of the first node to the at least one second node during the time division schedule advertisement message transmission period within the super-frame. Upon receiving a time division schedule advertisement message from the second node during the CAP within the super-frame, the first node adjusts a data transmission or reception time for the at least one device node connected to the first node using the received time division schedule advertisement message. | 01-13-2011 |
20110070836 | METHOD FOR OPERATING MULTI-TYPE BEACONS - Provided is a method for operating multi-type beacons by a first terminal connected with at least one second terminal through short-range communication. The method includes checking at least one variable related to the second terminal, allocating one selected from a plurality of beacons having different characteristics to the second terminal, taking into account the checked variable, and transmitting the beacon allocated to the second terminal. | 03-24-2011 |
20110221389 | WIRELESS POWER CHARGING METHOD AND APPARATUS FOR ELECTRONIC DEVICE - A bidirectional wireless charging method includes performing a mode change to a requesting electronic device if charging is necessary, requesting charging from at least one electronic device, receiving status information from the at least one electronic device that has received the charging request, selecting the electronic device based on the status information, and performing charging by receiving power supplied from the selected at least one electronic device. | 09-15-2011 |
20110221390 | WIRELESS POWER CHARGING METHOD AND APPARATUS - A wireless charging method and apparatus wirelessly charges power between separate electronic appliances. The wireless charging method includes searching for at least one chargeable electronic device, receiving status information from the searched at least one electronic device, determining whether the electronic device is a power supply electronic device or a power demand electronic device, receiving a supply of power from the searched at least one electronic device if the electronic device is determined to be the power demand electronic device, and supplying the power to the at least one electronic device if the electronic device is determined to be the power supply electronic device. | 09-15-2011 |
20110221391 | METHOD FOR WIRELESS CHARGING USING COMMUNICATION NETWORK - A method for wireless charging of an electronic apparatus includes: requesting a server for information regarding chargeable electronic devices; receiving the information regarding chargeable electronic devices from the server; and performing charging with at least one electronic device. | 09-15-2011 |
20110225073 | APPARATUS AND METHOD FOR PERFORMING WIRELESS CHARGING - A wireless charging method includes searching one or more rechargeable electronic devices, receiving power service information from one or more searched electronic devices, determining whether the one or more searched electronic devices are rechargeable based on the received power service information, and if the one or more searched electronic devices are rechargeable, receiving power from the electronic devices. | 09-15-2011 |
20110313660 | METHOD FOR EXCHANGING MESSAGES IN A NAVIGATION SYSTEM USING VISIBLE LIGHT COMMUNICATIONS - Method and device for exchanging messages in a VLC navigation system is provided, in which a map server generates a provision message in the form of visible light signals through all lamps in an area, using a PLC network, where a navigation service is provided, a terminal that wants to implement the navigation service among terminals that have received the provision message transmits a registration request message to the map server, the map server transmits a registration response message for the registration request message to the terminal, the terminal transmits a map request message including information about a destination to the map server, the map server transmits a map response message including information about a path to the destination to the terminal, and the terminal displays map information and the path. | 12-22-2011 |
20120089325 | METHOD FOR EXCHANGING MESSAGES IN A NAVIGATION SYSTEM USING VISIBLE LIGHT COMMUNICATIONS - Method and device for exchanging messages in a VLC navigation system is provided, in which a map server generates a provision message in the form of visible light signals through all lamps in an area, using a PLC network, where a navigation service is provided, a terminal that wants to implement the navigation service among terminals that have received the provision message transmits a registration request message to the map server, the map server transmits a registration response message for the registration request message to the terminal, the terminal transmits a map request message including information about a destination to the map server, the map server transmits a map response message including information about a path to the destination to the terminal, and the terminal displays map information and the path. | 04-12-2012 |
20130010595 | MUTUAL BROADCAST PERIOD AND CONTENTION ACCESS PERIOD OPERATING SYSTEM AND METHOD FOR LOAD CONTROL - A method and a system for operating a Mutual Broadcast Period (MBP) and Contention Access Period (CAP) for load control are provided. The proposed system and method is suitable for a short-range communication environment such as communication environment in or around the human body, and is for a mesh network communication environment in which one piconet is formed around the human body or a plurality of devices are connected. When signals carrying biometric information are periodically received from a plurality of sensor devices for medical purposes, the system and method may achieve efficient resource access by performing load control in a distributed manner, contributing to a reduction in access delay and power consumption and enabling appropriate QoS control. | 01-10-2013 |
20130039440 | APPARATUS AND METHOD FOR SUPPORTING DEVICE TO DEVICE SERVICE - Methods and apparatus are provided for searching for a peripheral device and transmitting device information in a device-to-device service. First information is transmitted using a first tone in a first region of a search duration. A second tone is determined by transposing a subcarrier index and a symbol index of the first tone. The first information is transmitted through the second tone in a second region of the search duration. First information of a peripheral device is received in the first and the second region of the search duration. The second information is transmitted through a resource region corresponding to the first tone in a third region of the search duration. Second information of the peripheral device is received in the third region of the search duration. Device information of the peripheral device is determined by combining the first and second information of the peripheral device. | 02-14-2013 |
20130077548 | APPARATUS AND METHOD FOR DETERMINING GATEWAY CONSIDERING LOW POWER - An apparatus and a method for determining a gateway using lower power are provided. The method includes setting probing transmission power for setting the gateway, transmitting a probing request message to another mobile station existing in a cluster with the set probing transmission power, when a probing response message is received from the other mobile station, generating a probing response list for the mobile station having transmitted the probing response message, determining whether a cluster list for mobile stations existing in the cluster corresponds to the probing response list, and determining a gateway mobile station according to a result of the determination as to whether the cluster list for mobile stations existing in the cluster corresponds to the probing response list. | 03-28-2013 |
20130094480 | METHOD AND APPARATUS FOR GENERATING CONNECTION IDENTIFIER FOR DEVICE-TO-DEVICE COMMUNICATION - A method and a device for generating a Connection Identifier (CID) for Device-to-Device (D2D) communication are provided. A transmitting device transmits a request signal for requesting direct communication between the transmitting device and a receiving device on a resource unit of a first resource index determined based upon at least one of a device ID of the transmitting device and a device ID of the receiving device during a predetermined first period, receives information about at least one used CID being used by at least one surrounding device from the peripheral device during a second period following the first period, transmits generation information including at least one available CID acquired during the second period on a resource unit of a second resource index being identical to the first resource index during a third period following the second period, and determines at least one CID to be used for D2D communication between the transmitting device and the receiving device based on the generation information. | 04-18-2013 |
20130108000 | METHOD AND APPARATUS FOR PERFORMING SYNCHRONIZATION BETWEEN DEVICES | 05-02-2013 |
20130124937 | METHOD AND APPARATUS FOR TRANSMITTING DATA IN DEVICE-TO-DEVICE SERVICE SYSTEM - A method for transmitting data in a second device that performs a Device-to-Device (D2D) service is provided. The method includes determining cooperative communication, if a value indicating a channel condition between a first device and a third device is less than or equal to a predetermined threshold, overhearing data transmitted from the first device to the third device and overhearing a response signal transmitted from the third device to the first device, to identify a transmission-failed data block of the first device, and if there are data transmission resources left at a predetermined scheduled data transmission time, transmitting the transmission-failed data block of the first device to the third device by piggybacking the transmission-failed data block on transmission data of the second device. | 05-16-2013 |
20130159537 | DEVICE AND METHOD CAPABLE OF SEARCHING FOR AVAILABLE SERVICE - A method capable of searching for a surrounding device based on a desired service is provided. The method includes transmitting a service search request including information regarding a target service to nearby devices; receiving a service search response from the nearby device supporting the target service; analyzing service information of the nearby device supporting the target service, which is included in the service search response; selecting the nearby device supporting the target service based on a result of the analyzed service information; and performing the target service by establishing a session with the selected device. | 06-20-2013 |
20130196638 | TARGET SERVICE APPARATUS AND METHOD BASED ON DEVICE TO DEVICE DIRECT COMMUNICATION - An apparatus and a method for providing a call taxi service based on D2D communication are provided. When a user terminal executes a call taxi service, a call taxi service request is transferred to a terminal from at least one taxi located in a neighboring area of the user terminal, and then the user terminal directly selects one taxi or one taxi is selected through a competition between taxis. As a result, a process of providing the call to the selected taxi. Accordingly, the user has an advantage of using a quick call taxi service without going through a separate call center. | 08-01-2013 |
20130208027 | METHOD OF PROVIDING ADDITIONAL INFORMATION ON EACH OBJECT WITHIN IMAGE BY DIGITAL INFORMATION DISPLAY DEVICE, DIGITAL INFORMATION DISPLAY DEVICE FOR THE SAME, AND VISIBLE LIGHT COMMUNICATION TERMINAL FOR RECEIVING ADDITIONAL INFORMATION - A method and apparatus for providing additional information to a visible light communication terminal through visible light communication by an information display device having a back light unit is provided. The method includes, when the visible light communication terminal is located in one area corresponding to at least one additional information providing area that is disposed within a screen of the information display device, receiving time slot information allocated to the one area through the visible light communication, when the visible light communication terminal is located in remaining areas of the at least one area corresponding to the at least one object, except for the one area, receiving additional information on all objects from the remaining areas through the visible light communication, and acquiring additional information on the object corresponding to the one area from among the additional information on all the objects by using the allocated time slot information. | 08-15-2013 |
20130210359 | METHOD OF UPDATING INTO SERVICE CATEGORY TABLE IN DEVICE AND DEVICE FOR THE SAME - A method for acquiring a service category table required for finding a service includes acquiring information on a latest service category table by identifying version information of a service category table from a broadcasting signal received from adjacent devices during, a process of searching for a device supporting a service desired among devices, and acquiring a service category table of a latest version by establishing a session connection with a device supporting the service category table of the latest version based on the information. By acquiring, the information on the latest service category table, a session connection with only the device providing the desired service is established so that an optimized session connection establishing process can be performed and a total network capacity can be efficiently managed. Also, the latest service category table can be acquired from the session-connected device, and thus a new service can be easily identified. | 08-15-2013 |
20130225082 | APPARATUS AND METHOD FOR WIRELESS POWER TRANSMISSION - A power supply apparatus for wirelessly supplying power to one or more terminals includes a signal transceiver configured to receive a charging state message indicating a charging state from the one or more terminals, a display unit configured to display the charging state of each of the one or more terminals based on the charging state message, an interface unit configured to receive a charging control signal for controlling a charging operation of each of the one or more terminals, a controller configured to control the signal transceiver to transmit a power reception control signal for controlling whether the one or more terminals receive power by analyzing the charging control signal for the one or more terminals and a power supplier configured to wirelessly supply power to the one or more terminals under a control of the controller. | 08-29-2013 |
20130308625 | METHOD AND APPARATUS FOR PERFORMING SYNCHRONIZATION IN DEVICE-TO-DEVICE NETWORK - A method and an apparatus for performing synchronization by a first device in a Device-to-Device (D2D) network are provided. The method includes detecting a synchronization signal from at least one second device during one period, determining a phase adjustment value depending on a number of synchronization signals, which have been detected from the at least one second device during the one period, adjusting a phase value of a first device using the phase adjustment value, and transmitting a synchronization signal if the phase value of the first device reaches a predetermined specific value. | 11-21-2013 |
20130343298 | METHOD AND APPARATUS FOR TRANSMITTING PACKET IN SYSTEM PERFORMING D2D DIRECT COMMUNICATION - A method and an apparatus for transmitting a packet in a system performing a Device to Device (D2D) direct communication are provided. In the method, whether to transmit a small packet is determined. When small packet transmission is determined, at least one peripheral reception device is informed of whether the small packet is transmitted at a scheduling point. | 12-26-2013 |
20140106673 | PROXY COMMUNICATION SYSTEM AND PROXY COMMUNICATION SYSTEM CONTROLLING METHOD IN BAN ENVIRONMENT - Disclosed is a method of controlling a communication system including one or more sensors attached to a user, a wireless communication apparatus, and a coordinator. The method of controlling the communication system includes receiving a request for a proxy authority for a proxy between the one or more sensors and the coordinator from the wireless communication apparatus and assigning the proxy authority to the wireless communication apparatus by the coordinator; generating a user identifier corresponding to the user by the wireless communication apparatus; searching for the one or more sensors attached to the user and establishing pairings with the found one or more sensors by the wireless communication apparatus; making a request for association information for an association between the coordinator and the sensors from the found one or more sensors and receiving the association information by the wireless communication apparatus; making a request for an association proxy for an association between the found one or more sensors and the coordinator from the coordinator and receiving the association proxy in response to the request by the wireless communication apparatus; and establishing an association with the found one or more sensors, making a request for data, and receiving the data in response to the request for the data by the coordinator. | 04-17-2014 |
20140112332 | METHOD AND APPARATUS FOR SYNCHRONIZATION FOR DEVICE-TO-DEVICE COMMUNICATION - A method and an apparatus for synchronization for a device-to-device communication are disclosed. The method includes: instantly adjusting a synchronization phase value according to a time point when a synchronization signal is received, as soon as a device receives the synchronization signal from an adjacent device in an unconnected state; accumulatively storing at least one phase adjustment value according to a time point when at least one synchronization signal is received, whenever the device receives the at least one synchronization signal from at least one adjacent device in a connected state; and adjusting the synchronization phase value according to the stored at least one phase adjustment value when the device transitions from the connected state to the unconnected state. | 04-24-2014 |
20140133593 | METHOD AND APPARATUS FOR SUPPORTING MULTIPLE-ACCESS SIGNAL IN MOBILE COMMUNICATION SYSTEM - In order to generate multiple-access signals, each transmitter transmits information by using all or a part of channel resources. The signal of each transmitter is mapped to an OFDM time-frequency resource space as a trellis modulation path. A mobile communication system maps trellis modulation paths of a plurality of transmitters to the same resource space. In order to effectively detect and distinguish signals of a plurality of transmitters transmitted through the same channel resource space, a receiver uses a message passing method between symbols and a path connection method. The receiver uses a state space expansion method, a backward pre-decoding method, and a successive interference cancellation method to more efficiently reconstruct a discovery signal. | 05-15-2014 |
20140269387 | SCHEDULING METHOD AND APPARATUS IN SYSTEM PERFORMING DEVICE-TO-DEVICE COMMUNICATION - A link scheduling method in a system for performing Device-to-Device (D2D) communication includes periodically collecting information indicating whether to perform a medium access from at least one neighboring link determining at least one link expected to perform a medium access in a corresponding traffic slot among links with a higher priority than the terminal based on the collected information, and determining whether to perform the medium access of the terminal by considering only the at least one link expected to perform the medium access. | 09-18-2014 |
20140270029 | APPARATUS AND METHOD FOR SUPPORTING DEVICE TO DEVICE COMMUNICATION - A method for operating a device in a wireless communication system supporting Device to Device (D2D) communication system includes receiving a reference signal from each of at least one transmitting device, estimating a frequency offset between the reference signals and a comparison reference signal corresponding to the reference signals, and adjusting a transmit frequency of a voltage controlled oscillator of the device using the estimated frequency offset estimation. An apparatus for compensating for a frequency offset of a device in a wireless communication system supporting Device to Device (D2D) communication system includes a frequency offset estimator configured to receive reference signals from each of at least one transmitting device, and estimating a frequency offset between the reference signals and a comparison reference signal corresponding to the reference signals, and a voltage controlled oscillator configured to adjust a transmit frequency using the estimated frequency offset. | 09-18-2014 |
20140285819 | POSITION COMPENSATION DEVICE USING VISIBLE LIGHT COMMUNICATION AND METHOD THEREOF - The present invention relates to a position compensation device using visible light communication and a method thereof. To this end, the present invention receives a visible light signal which includes lighting position information from a lighting device to extract the lighting position information from the received visible light signal, and calculates a compensated position of a position compensation device by using the extracted lighting position information if a request for position compensation exists, thereby providing an exact position of a user indoors. | 09-25-2014 |
20140302791 | APPARATUS AND METHOD FOR DEVICE TO DEVICE COMMUNICATION IN A WIRELESS NETWORK - A method for supporting an application by Device to Device (D2D) communication in a wireless network includes acquiring range control information from an application upon selection of the application installed in the source device, controlling transmission power of a discovery signal for discovering a target device to conduct D2D communication, based on range control information defined for the selected application, and transmitting the discovery signal with the controlled transmission power. An apparatus includes a controller configured to acquire range control information from an application upon selection of the application installed in the source device, and control transmission power of a discovery signal for discovering a target device to conduct D2D communication, for the selected application based on range control information defined for the selected application, and a transmitter configured to transmit the discovery signal with the controlled transmission power. | 10-09-2014 |
20140307657 | DEVICE AND METHOD FOR PERFORMING DEVICE TO DEVICE COMMUNICATION IN WIRELESS COMMUNICATION SYSTEM - A device and a method for performing Device to Device (D2D) communication in a wireless communication system are provided. The method includes transmitting information on a self-frequency band selected from all frequency bands for the D2D communication, to the second mobile station, receiving information on a counterpart-frequency band selected for the D2D communication, from the second mobile station, determining transmission and reception frequency bands to be used for the D2D communication, based on the information on the self-frequency band and the information on the counterpart-frequency band, transmitting data to the second mobile station in the determined transmission frequency band, and receiving data from the second mobile station in the determined reception frequency band. | 10-16-2014 |
20140315494 | PROXY COMMUNICATION SYSTEM IN BAN ENVIRONMENT AND CONTROL METHOD THEREOF - Disclosed is a control method of a communication system including at least one sensor that a user wears, a wireless communication apparatus and a coordinator. The control method of the communication system includes: in the coordinator, receiving a proxy authority request for proxy with respect to the at least one sensor and the coordinator from the wireless communication apparatus, and granting the proxy authority to the wireless communication apparatus; in the wireless communication apparatus, creating a user identifier corresponding to the user; in the wireless communication apparatus, searching for the at least one sensor that the user wears, and forming a pairing with the at least one found sensor; in the wireless communication apparatus, making a request to the at least one found sensor for association information for the association with the coordinator and the sensor, and receiving the association information; in the wireless communication apparatus, making a request to the coordinator for association proxy for an association between the at least one found sensor and the coordinator, and receiving the association proxy in response to the request; and in the coordinator, requesting data by forming an association with the at least one found sensor, and receiving data corresponding to the data request. | 10-23-2014 |
20140316923 | APPARATUS AND METHOD FOR PROVIDING A SPECIFIC SERVICE - The present invention provides a method for providing a service to a device having an interest in a specific service in a device-to-device (D2D) condition. The method includes: searching for a device which enters into an area managed by a device which provides the specific service; and identifying an interest of the searched device in the specific service and inviting the searched device to participate in the specific service. In the method, by selectively connecting a session based on a service interest, an efficient management in view of an entire network capacity is possible and an advantage of reducing a time for session connection is achieved. | 10-23-2014 |
20140321377 | SCHEME FOR D2D COMMUNICATION USING PRIORITY - A communication method of a device to device (D2D) user equipment (UE) in a cellular system supporting a communication frame structure including one or more subframes used for a communication of the D2D UE is provided. The method includes reading an alarm region located within a first subframe, wherein the alarm region indicates whether a communication signal having a priority is included in the first subframe or a second subframe related to the first subframe, and transmitting the communication signal through one of the second subframe and a third subframe related to the second subframe, based on information read from the alarm region. | 10-30-2014 |
20140321438 | METHOD AND APPARATUS FOR SYNCHRONIZATION FOR DEVICE-TO-DEVICE COMMUNICATION IN UNLICENSED FREQUENCY BANDS - A method and an apparatus for synchronization for Device-to-Device (D2D) communication in unlicensed frequency bands are provided. The method includes determining whether a signal is detected during a preset time period within a synchronization period, after transmitting a synchronization signal during the synchronization period for the D2D communication, when it is determined that the D2D communication is to be performed, and starting the time period for the D2D communication and performing the D2D communication during the time period for the D2D communication, when it is determined that the signal is not detected. | 10-30-2014 |
20140324974 | METHOD AND APPARATUS FOR PERFORMING DISTRIBUTED RESOURCE SCHEDULING IN DEVICE-TO-DEVICE COMMUNICATION SYSTEM - A distributed scheduling method in a Device-to-Device (D2D) communication system is provided. The method includes transmitting, to a peer device, first resource information including a link identifier and start position information of resources to be allocated, receiving, from the peer device, second resource information in which at least one of the resource start position information and a resource allocation amount is adjusted based on the first resource information, and determining the resource start position based on the first resource information and second resource information. | 10-30-2014 |
20140328267 | STRUCTURE OF MOBILE TERMINAL OPERATING IN A MOBILE COMMUNICATION SYSTEM SUPPORTING DEVICE TO DEVICE COMMUNICATION AND OPERATION METHOD THEREFOR - A mobile terminal in a mobile communication system supporting device to device (D2D) communication, and a method for operating the mobile terminal are provided. The terminal includes a first radio frequency (RF) chain configured to transmit a mobile communication signal and a second RF chain configured to receive a mobile communication signal, for mobile communication with a base station, a switching unit including a plurality of switches configured to establish transmission and reception paths in the first and second RF chains, and a controller configured to control switching of the switching unit to establish transmission and reception paths of a D2D communication signal for D2D communication by combining a part of the first RF chain with a part of the second RF chain. The combination of the parts of the first and second RF chains is different according to a D2D communication frequency band. | 11-06-2014 |
20140341121 | METHOD AND APPARATUS FOR COMMUNICATION BETWEEN USER EQUIPMENTS IN WIRELESS COMMUNICATION SYSTEM - A method and an apparatus for direct communication between User Equipments (UEs) in a wireless communication system are provided. A method for communicating with a second UE by a first UE in the wireless communication system includes generating a discovery code used for communicating with the second UE, and transmitting the generated discovery code to one middle layer among a plurality of layers. | 11-20-2014 |
20140341132 | SCHEME FOR DISCOVERY IN A COMMUNICATION NETWORK - A method for performing discovery at a terminal in a communication system is provided. The method includes generating a discovery request message including discovery target information, transmitting the discovery request message to a Proximity Service (ProSe) server that is located in a core network of the communication system and that manages communication of the terminal, and receiving a result of a discovery operation from another entity that performs the discovery operation of the terminal using discovery identification information about the terminal. The other entity is selected based on the discovery target information by the ProSe server. | 11-20-2014 |
20140376444 | MULTICAST SERVICE METHOD AND APPARATUS IN MOBILE COMMUNICATION SYSTEM - A method of providing a multicast service in a mobile communication system includes dividing original multicast data into a plurality of multicast data to generate a plurality of multicast streams having different data rates and transmitting a first transmission frame including the plurality of multicast streams to a plurality of user equipments; receiving a report on a data rate corresponding to an unreceived multicast stream among the plurality of multicast streams from one or more user equipments among the plurality of user equipments; and transmitting a second transmission frame including the unreceived multicast stream to the plurality of user equipments including the one or more user equipments. | 12-25-2014 |
20140376458 | METHOD AND APPARATUS FOR ALLOCATING RESOURCES FOR D2D COMMUNICATION - A method for allocating resources for Device-to-Device (D2D) communication in a transmitting terminal is provided. The method includes receiving broadcast resource allocation information for the D2D communication from a Base Station (BS), and measuring a channel quality of a downlink signal received from the BS and, if the measured channel quality is smaller than a predetermined threshold, conducting the D2D communication using the resource allocation information. | 12-25-2014 |
20150030335 | APPARATUS FOR RECEIVING AND TRANSMITTING OPTICAL INFORMATION - An apparatus for transmitting information using a visible light includes at least three light emitting devices, each being installed based on a predetermined interval and direction, and a data transmitting unit to transmit data by controlling the at least three light emitting devices. | 01-29-2015 |