Patent application number | Description | Published |
20100113031 | TERMINAL, METHOD FOR HANDOVER THEREOF, AND SUPPORTING METHOD FOR HANDOVER OF BASE STATION - A method for handover according to the present invention includes: requesting information on femto cells that are accessible by the terminal from a macro base station that manages the macro cells; receiving the femto cell information from the macro base station; and scanning neighboring femto cells based on the femto cell information. | 05-06-2010 |
20100113049 | METHOD AND DEVICE FOR MANAGEMENT OF FEMTO BASE STATION - A method for management of a base station according to the present invention includes: entering a first interval when a terminal is not present in a region of a first cell managed by the base station; receiving an interval switching request when the terminal enters a second cell that is larger than the first cell while including the first cell; and switching into a second interval other than the first interval in accordance with the interval switching request. | 05-06-2010 |
20100144355 | TERMINAL, METHOD FOR HANDOVER THEREOF AND SUPPORTING METHOD FOR HANDOVER OF BASE STATION - A handover method of a terminal in a macro cell including a plurality of femto cells includes scanning information on a femto base station for managing a femto cell that is near the terminal from among the plurality of femto cells, and reporting information on the femto base station to a macro base station for managing the macro cell. | 06-10-2010 |
20100278063 | METHOD FOR CONTROLLING INTERFERENCE - A method for controlling interference between a plurality of neighboring base stations for a terminal by a serving base station of the terminal in a communication system is provided. The method includes receiving interference amount information on a first region of a downlink frame from the terminal, determining an interference amount estimate for the first region based on the received interference amount information, comparing the determined interference amount estimate with an interference amount tolerance for the first region; and transmitting an interference indicator requesting reduction in transmission power for the first region to the plurality of neighboring base stations when the interference amount estimate exceeds the interference amount tolerance. | 11-04-2010 |
20100279700 | RESOURCE ALLOCATION AND POWER CONTROL METHOD - A method for controlling transmission power in a mobile communication system is provided. According to the method, a serving base station arranges a plurality of terminals in ascending order according to Carrier-to-Interference-and-Noise-Ratios (CINRs) based on the CINR measured by the plurality of terminals, classifies the plurality of terminals in one of a first group and a second group according to the order, allocates a subchannel of a data region corresponding to the first group from among a plurality of data regions included in the uplink frame to a terminal classified as the first group, and allocates a subchannel of a data region corresponding to the second group from among the data regions to a terminal classified as the second group. | 11-04-2010 |
20100331018 | TERMINAL, METHOD FOR MANAGING THEREOF, BASE STATION AND METHOD FOR MANAGING THEREOF - A method for managing a terminal operated in an idle state is provided. The method includes entering a femto cell, determining whether a femto base station managing the femto cell has the same paging group as a macro base station managing a macro cell overlapping the femto cell, transmitting a first ranging code triggering a paging enable state to the femto base station if it is determined that the paging group is the same as the determination result, and receiving a paging message from the femto base station. | 12-30-2010 |
20110028175 | Device for managing of base station and method for managing thereof - A management device of a stopping or moving base station includes: an information acquisition unit that acquires first information about wireless environment from a neighboring base station and that acquires second information about the wireless environment by connecting to a backbone network; a position estimating unit that estimates a position of the neighboring base station based on the first information; and an operation condition selection unit that selects radio resources based on at least one of the first information and the second information. | 02-03-2011 |
20110092235 | APPARATUS FOR MEASURING RADIO ENVIRONMENT OF BASE STATION AND METHOD FOR MEASURING THE SAME - A method and apparatus for measuring a radio environment of a base station is provided. The method includes respectively selecting one or more frames for measuring a radio environment in a first mode in which an Over-The-Air Receiver (OTAR) of the base station is initialized and a second mode in which the OTAR is active, continuously measuring the radio environment based on the selected one or more frames in the first mode and intermittently measuring the radio environment based on the selected one or more frames in the second mode. | 04-21-2011 |
20110092239 | APPARATUS FOR MANAGING RADIO RESOURCES OF BASE STATION AND METHOD FOR MANAGING THE SAME - A method for managing radio resources of a base station is provided. The method includes evaluating a radio environment between a base station and at least one neighboring base station or a radio environment between the base station and terminals connected to the base station, if the evaluated radio environment does not meet predetermined criteria, selecting a new radio resource, deactivating the existing radio resource, and reactivating the new radio resource. Accordingly, the radio resources can be efficiently managed. | 04-21-2011 |
20110116466 | IDENTIFYING METHOD AND PROTOCOL DATA UNIT GENERATING APPARATUS - A terminal identifying method identifies a terminal in a media access control layer, and includes allocating a station ID to the terminal for identifying the terminal, and allocating a flow ID to a connection in the terminal for identifying the connection in the terminal. | 05-19-2011 |
20110126037 | POWER SAVING METHOD IN MOBILE COMMUNICATION NETWORK - Provided is The present invention provides a method to dynamically control the sleep window or the listening window of a sleep mode in order to minimize power consumption of a mobile terminal. The power saving method relates to a method for a transmitter of a communication system that controls data transmission to a listening window and a sleep window to control the sleep window, wherein if the data transmission is generated during the listening window, the transmitter gradually decreases a sleep window subsequent thereto by a predetermined ratio, and to the contrary, if the data transmission is not generated during the listening window, the transmitter gradually increases a sleep window subsequent thereto by a predetermined ratio. | 05-26-2011 |
20110141933 | METHOD AND APPARATUS FOR CONTROLLING POWER FOR UPLINK - A method and apparatus for controlling power for uplink are provided. When a base station is moving or unable to communicate with others, at least one interference amount is estimated for a neighboring base station based on a path gain between a terminal and the neighboring base station and a transmission power of each encoding packet size and transmission format included in a candidate group related to scheduling transmission power parameters. A target interference amount is determined based on an interference amount control value and an initial target interference amount according to a processing load of a serving base station, and one interference amount is selected from estimated interference amounts based on the target interference amount. The terminal determines the transmission power based on an encoding packet size and a transmission format corresponding to the selected interference amount. | 06-16-2011 |
20110153430 | METHOD FOR BROADCASTING AND METHOD FOR RECEIVING LOCATION INFORMATION OF BASE STATION - A plurality of location-based service advertisement messages including location information of base stations belonging to each network are broadcasted with different timing in multiple wireless networks. Therefore, a terminal receives only at least on location-based service advertisement message corresponding to an accessible network among the plurality of location-based service advertisement messages. | 06-23-2011 |
20110194479 | TRANSMITTING DEVICE, TRANSMITTING METHOD, AND RECEIVING METHOD FOR MULTICAST AND BROADCAST SERVICE - A transmitting device for a multicast and broadcast service according to an embodiment of the present invention includes: an encoder that receives data to generate parity; an ARQ block generator that generates a first automatic repeat request (ARQ) block by dividing the data and generates a second ARQ block by dividing the parity; a PDU generator that generates a first protocol data unit (PDU) including the first ARQ block and a second protocol unit (PDU) including the second ARQ block; and a transmitter that transmits the first PDU and the second PDU to a plurality of terminals. | 08-11-2011 |
20110237252 | METHOD FOR MANAGING NEIGHBOR BASE STATION LIST BASED ON TERMINAL LOCATION FOR EFFICIENT CELL SELECTION AND HANDOFF IN MACROCELL ENVIRONMENTS WITH FEMTOCELL - In order to manage a neighbor list of neighboring base stations based on the location of a terminal communicating with a base station of a macrocell with femtocell deployments, the base station divides the macrocell in accordance with a predetermined standard of division, and generates a mobile neighbor advertisement message so as to periodically transmit the generated message to the terminal. At this time, the terminal identifies the current location thereof in the macrocell upon receipt of the pilot signals periodically transmitted from the base station of the macrocell. The terminal obtains information regarding the location of the terminal from the information regarding the femtocells deployed within the respective divided regions and information regarding macrocells neighboring the macrocell through using the mobile neighbor advertisement message to scan base stations. | 09-29-2011 |
20110312324 | METHOD FOR PROVIDING SERVICE OF FEMTOCELL, AND TRANSMITTER AND RECEIVER FOR THE SAME - A service method of a femtocell for simultaneously providing a plurality of femto services to a plurality of mobile stations, and a transmitter and receiver for the same. When a femto advanced base station supports a plurality of femtocell subscription types, and it simultaneously provides data services with different qualities to mobile stations having subscribed to different femtocells. The femtocell subscription type supported by the femto advanced base station is advertised to the mobile station through an identifier at a PHY level or an identifier at a MAC level. A CSG-closed femtocell provides a high-quality data service to limited subscribers, a CSG-open femtocell provides a relatively low quality data service to limited subscribers, and an OSG femtocell provides the lowest quality data service to all mobile stations irrespectively of subscription states. | 12-22-2011 |
20110312364 | METHOD AND DEVICE FOR TRANSMITTING SCANNING START INFORMATION OF DIFFERENT RADIO ACCESS NETWORK - A method and device for providing reference information for starting scanning a different radio access network to a terminal in a boundary area is provided. A receiver supporting a plurality of access systems includes a receiving circuit for receiving a scanning threshold from a transmitter, a first measuring module for measuring channel quality of a serving cell, and a second measuring module for starting scanning a neighboring cell that is a different radio access network when channel quality of the serving cell is less than the channel quality threshold. The receiver may further include a handover module for performing handover to the neighboring cell when the channel quality of the neighboring cell measured by the second measuring module is greater than that of the serving cell. | 12-22-2011 |
20120094654 | DEVICE AND METHOD FOR MANAGING BASE STATION AND TERMINAL - A base station management method according to the present invention is a method for managing an operation mode of a base station, and includes determining whether a terminal exists in a cell managed by the base station and operating in a low duty operation mode (LDM) when no terminal exists in the cell. | 04-19-2012 |
20120106516 | METHOD AND APPARATUS FOR TRANSMITTING NEIGHBOR BASE STATION INFORMATION PERFORMED BY MACRO BASE STATION IN WIRELESS COMMUNICATION SYSTEM - Provided is a method for requesting neighbor base station information by user equipment in a wireless communication system. The method includes: searching neighbor base stations targeted for a handover; transmitting a list request message including preamble information about a neighbor base station searched by the user equipment among the neighbor base stations and a neighbor base station list request indicator indicating a request for information about the neighbor base station to a serving base station; and receiving a list response message including an identification information and system information of the neighbor base station from the serving base station. | 05-03-2012 |
20120108238 | METHOD FOR OPERATION OF FEMTO BASE STATION BASED ON RADIO ACCESS SYSTEM - A method for opearation of femto base station (BS) is provided. The method includes: transmitting the first low duty operation (LDO) pattern information, which includes length information of an available interval (AI) where the femto BS is activated and length information of an unavailable interval (UAI) where the femto BS is inactivated, to user equipment (UE) and operating based on the first LDO pattern where the first LDO cycle, a sequence of the AI and the UAI, is repeatedly arranged. The first LDO pattern information further including a superframe offset as information for leading a start point of the first LDO cycle. | 05-03-2012 |
20120155306 | BASE STATION AND OPERATING METHOD THEREOF - A base station measures an amount of traffic within a downlink buffer. If the measured amount of traffic is larger than a threshold value, the base station adjusts a ratio of an available interval and an unavailable interval according to a ratio of the amount of traffic against the threshold value and length of a superframe. If the measured amount of traffic is smaller than the threshold value, the base station adjusts a ratio of the available interval and the unavailable interval according to a ratio of the threshold value against the amount of traffic and length of the superframe. | 06-21-2012 |
20120157131 | METHOD OF LOW-DUTY MODE OPERATION OF FEMTOCELL BASE STATION - A method of setting a cycle of a low-duty mode in a femto base station is provided. The cycle of the low-duty mode has a pattern in which an available interval and an unavailable interval repeatedly appear, and the available interval is set to include a paging listening interval of a paging cycle. A method of setting a cycle of a low-duty mode in a femto base station having a service area overlapping with that of a macrocell is provided. An unavailable interval is set by taking the overlapping degree of the service area of the femto base station with the macrocell into consideration. A method of setting a cycle of a low-duty mode in a plurality of femto base stations operated in the low-duty mode is provided. The same cycle can be set for a plurality of base stations. | 06-21-2012 |
20120163276 | METHOD AND APPARATUS FOR ALLOCATING MULTICAST RESOURCE AND METHOD AND APPARATUS FOR RECEIVING MULTICAST RESOURCE ALLOCATION INFORMATION - A method of allocating a multicast resource to a multicast group for a multicast communication in a base station is provided. The base station persistently allocates the multicast resource to the multicast group, generates a MAP IE including allocation information of the multicast resource, an allocation period indicating a period in which the multicast resource is allocated and a lifetime in which allocation of the multicast resource is maintained, and transmitting the MAP IE to the multicast group. | 06-28-2012 |
20120163277 | METHOD AND APPARATUS FOR ESTABLISHING MULICAST CONNECTION - A method of establishing a multicast connection is provided. A mobile station transmits a registration request message for a discovery of a multicast service to the base station, and receives a registration response message from the base station in response to the registration request message. The mobile station exchanges a DSA request message and a DSA response message to the DSA request message with the base station, for a multicast connection on the multicast service. The mobile station receives a downlink control channel including allocation information of multicast resource from the base station. | 06-28-2012 |
20120188981 | SIGNALLING METHOD FOR DIRECT COMMUNICATION BETWEEN TERMINALS - A signaling method of a first terminal for direct communication between terminals includes transmitting a link establishment request message for establishing a direct communication link including flow information to a second terminal, receiving a link establishment response message for establishing a direct communication link including flow information from the second terminal, and establishing a direct communication link between the first terminal and the second terminal. | 07-26-2012 |
20120224472 | METHOD FOR RELAYING OF BASE STATION, METHOD FOR RELAYING OF TERMINAL AND METHOD FOR TRANSMITTING - A method of relaying in a base station (BS) includes: setting, when a backhaul link of a first BS is damaged, a relay link using a second BS, which is an adjacent BS of the first BS as a serving BS; and releasing the relay link after the backhaul link is recovered. | 09-06-2012 |
20120224522 | METHOD AND APPARATUS FOR MANAGING MULTICAST SERVICE - In a method of managing a multicast service, a mobile station receives a message including multicast service flow update information from a base station that belongs to a multicast group zone including a base station set having at least one base station. The mobile station updates a parameter associated with a multicast service flow of the multicast service based on the multicast service flow update information. The multicast service flow update information includes a new multicast group zone ID, current multicast service identification information, and new multicast service identification information mapped to the current multicast service identification information. | 09-06-2012 |
20120224546 | METHOD AND TERMINAL FOR PERFORMING DIRECT COMMUNICATION BETWEEN TERMINALS - A first terminal for performing direct communication between terminals includes: a radio frequency (RF) unit; and a processor, the processor being adapted to perform direct communication with at least one second terminal by using resources allocated for direct communication between terminals, wherein the resources are divided into a first slot region and a second slot region, the first slot region including a synchronization channel containing synchronization information for direct communication between terminals, a dedicated channel for transmitting direct communication data between terminals, and a supplementary channel one-to-one mapped with the dedicated channel, and the second slot region including the dedicated channel and the supplementary channel. | 09-06-2012 |
20120264430 | METHOD FOR COMMUNICATION OF BASE STATION, RELAY STATION AND TERMINAL - The present invention relates to a communication method of a base station, which includes the base station including an indication of whether the base station is a terminal acting as a base station or a base station acting as a relay station in an SCD message or DCD message, and transmitting the SCD message or the DCD message to a terminal. | 10-18-2012 |
20120294245 | METHOD AND TERMINAL FOR PERFORMING DIRECT COMMUNICATION BETWEEN TERMINALS - Disclosed is a method for a first terminal to perform direct communication between terminals, the method including performing direct communication with at least one second terminal by using resources allocated for direct communication between terminals, the resources including a synchronization channel used for frequency synchronization and time synchronization between terminals, and the synchronization channel including a synchronization channel preamble used for at least one of preamble detection, time offset estimation, frequency offset estimation, and channel estimation. | 11-22-2012 |
20130016646 | TERMINAL OF SUPPORTING DIRECT COMMUNICATION USING INFRA COMMUNICATION AND DIRECT COMMUNICATION METHOD OF THE SAMEAANM CHANG; Sung CheolAACI DaejeonAACO KRAAGP CHANG; Sung Cheol Daejeon KRAANM YUN; Mi YoungAACI DaejeonAACO KRAAGP YUN; Mi Young Daejeon KRAANM KIM; EunkyungAACI DaejeonAACO KRAAGP KIM; Eunkyung Daejeon KRAANM KIM; Sung KyungAACI DaejeonAACO KRAAGP KIM; Sung Kyung Daejeon KRAANM KIM; Won-IkAACI DaejeonAACO KRAAGP KIM; Won-Ik Daejeon KRAANM LEE; HyunAACI DaejeonAACO KRAAGP LEE; Hyun Daejeon KRAANM YOON; Chul SikAACI SeoulAACO KRAAGP YOON; Chul Sik Seoul KRAANM LIM; Kwang JaeAACI DaejeonAACO KRAAGP LIM; Kwang Jae Daejeon KRAANM KIM; SeokkiAACI Osan-siAACO KRAAGP KIM; Seokki Osan-si KR - A method in which a first terminal supports direct communication using infracommunication includes setting at least one direct communication link with at least one second terminal, setting at least one traffic connection with a base station, and forwarding data that is transmitted through the at least one direct communication link from the at least one second terminal to the at least one traffic connection or forwarding data that is transmitted through the at least one traffic connection from the base station to the at least one direct communication link. | 01-17-2013 |
20130017817 | METHOD FOR COMMUNICATION OF BASE STATION AND TERMINALAANM Kim; Won-IkAACI DaejeonAACO KRAAGP Kim; Won-Ik Daejeon KRAANM Kim; EunkyungAACI DaejeonAACO KRAAGP Kim; Eunkyung Daejeon KRAANM Kim; Sung KyungAACI DaejeonAACO KRAAGP Kim; Sung Kyung Daejeon KRAANM Chang; Sung CheolAACI DaejeonAACO KRAAGP Chang; Sung Cheol Daejeon KRAANM Cha; Jae SunAACI DaejeonAACO KRAAGP Cha; Jae Sun Daejeon KRAANM Yun; Mi YoungAACI DaejeonAACO KRAAGP Yun; Mi Young Daejeon KRAANM Lee; HyunAACI DaejeonAACO KRAAGP Lee; Hyun Daejeon KRAANM Yoon; Chul SikAACI SeoulAACO KRAAGP Yoon; Chul Sik Seoul KRAANM Lim; Kwang JaeAACI DaejeonAACO KRAAGP Lim; Kwang Jae Daejeon KR - A method of performing communication of a terminal includes the terminal transmitting state information thereof to a base station, and the terminal receiving a mode change request from the base station when the terminal is selected by the base station. | 01-17-2013 |
20130022199 | ENCRYPTION METHOD AND APPARATUS FOR DIRECT COMMUNICATION BETWEEN TERMINALS - A method for performing direct communication between terminals includes: a transmitting terminal's encrypting data using a direct communication transport encryption key (DTEK) for direct communication; and transmitting the encrypted data to a receiving terminal, wherein the DTEK is managed in an SA (security association) defined within the transmitting terminal or the receiving terminal. | 01-24-2013 |
20130065634 | METHOD FOR COMMUNICATION OF TERMINAL AND METHOD FOR COMMUNICATION OF BASE STATION - A method for communication of a terminal and a method for communication of a base station are disclosed. Communication between a first base station with a problem in a backbone and a second base station located beyond the coverage of the degraded base station and neighboring the first base station is relayed by a terminal. Accordingly, the first base station is able to continuously provide service to subordinate stations. | 03-14-2013 |
20130077512 | METHOD AND TERMINAL FOR DIRECT COMMUNICATION BETWEEN TERMINALS - A direct communication method between terminals is provided. When a terminal receives a plurality of synchronization information parts, the terminal selects synchronization information to acquire a reference time among the plurality of synchronization information parts according to a priority. Here, the priority is an order of first synchronization information that is received from a base station, second synchronization information that is received from a global positioning system (GPS), and third synchronization information that is received from a terminal in which a hop count from the base station or the GPS is small. | 03-28-2013 |
20130107795 | COMMUNICATION METHOD OF RELAY, TERMINAL, AND COMMUNICATION METHOD OF THE TERMINAL | 05-02-2013 |
20130109298 | TERMINAL AND METHOD OF COMMUNICATING IN THE SAME | 05-02-2013 |
20130176935 | TERMINAL AND COMMUNICATION METHOD THEREOF - A communication method of a terminal that can operate in a relay mode or a base station mode is provided. When the terminal, having received a service from a first base station, detects that a service connection to the first base station is unavailable, the terminal searches for a second base station, which is an available neighboring base station. The terminal transmits a ranging request message including a base station identifier of the first base station to the second base station. | 07-11-2013 |
20130177030 | METHOD AND APPARATUS FOR TRANSMITTING SYNCHRONIZATION CHANNEL, AND METHOD AND APPARATUS FOR RECEIVING SYNCHRONIZATION CHANNEL - In a direct communication between terminals, a terminal transmits a synchronization channel preamble part after transmitting a synchronization channel message part including synchronization information. The terminal receives a dedicated channel including a direct communication packet after transmitting the synchronization channel preamble part. A transition time gap for switching from transmission to reception may be inserted to an end of the synchronization channel preamble part. | 07-11-2013 |
20130235784 | METHOD AND APPARATUS FOR MANAGING MULTICAST RESOURCE - A method of managing a multicast resource is provided by a base station. The base station allocates a multicast resource to a multicast group. The base station generates a MAP IE including information of the multicast resource and a transmission indication for indicating whether the multicast resource is fragmented, and transmits the MAP IE to the multicast group. | 09-12-2013 |
20130286819 | MULTIMODE APPARATUS AND COMMUNICATON METHOD THEREOF - A multimode apparatus and a communication method thereof are disclosed. If the multimode apparatus is chosen to serve as a relay station due to a base station having a backhaul link problem, it sets up a first relay link with a first base station. Upon receiving a request for releasing the first relay link from the first base station even though the backhaul link is not restored, the multimode apparatus sets up a second relay link with a second base station, or configures and operates a standalone network or an independent network. | 10-31-2013 |
20130294233 | BASE STATION CONTROL METHOD FOR CONNECTION OF TERMINAL WITH HIGHER PRIORITY AND BASE STATION SUPPORTING THE SAME - A method of controlling a base station is disclosed that provides service to a first terminal and a second terminal having higher priority than the first terminal. The base station determines whether there is an influx of call connection attempts when the lower-priority terminal and the higher-priority terminal perform ranging. If it is determined that there is an influx of call connection attempts, the base station sets the initial ranging backoff window size included in an information element of S-SFH SP3 (Secondary-Superframe Header SubPacket3) to a first size. If it is determined that there is an influx of call connection attempts, the base station sets the initial ranging backoff window size for the second terminal in an AAI-SCD (Advanced Air Interface-System Configuration Descriptor) message to a second size. Accordingly, it is possible to achieve a high probability of success of initial ranging of a higher-priority terminal. | 11-07-2013 |
20130294322 | APPARATUS AND METHOD FOR SEQUENTIALLY TRANSMITTING DATA - A reception terminal receives information indicating whether a service flow requires in-order delivery and a maximum time during which data not yet received is to wait in a case in which in-order delivery is required, from a transmission terminal, restores service data units (SDUs) from protocol data units (PDUs) received from the transmission terminal with respect to the corresponding service flow, and transmits the restored SDUs to a higher layer according to sequence numbers of the received PDUs in order. | 11-07-2013 |
20130294330 | MOBILE RELAY STATION AND HANDOVER METHOD THEREOF - A mobile relay station (RS) and a handover method thereof are provided. When it is determined that a mobile RS performs handover from a superordinate base station (BS) to a target BS, information indicating admission of handover is received from the superordinate BS. The mobile RS transmits a service unavailability section to a subordinate terminal, whereby the subordinate terminal is prevented from performing handover to a different BS or a different RS. | 11-07-2013 |
20140016531 | METHOD OF DIRECT COMMUNICATION - Upon receiving a multicast packet from a base station, a forwarding terminal connected to the base station establishes a multicast connection with at least one direct communication terminal having a direct communication group identifier mapped to a multicast IP address of the multicast packet, and transmits the multicast packet to the at least one direct communication terminal, thereby providing multicast services to a direct communication terminal not connected to the base station. | 01-16-2014 |
20140016580 | METHOD AND APPARATUS FOR MANAGING RESOURCE - A method of managing a resource is provided by a base station. The base station allocates a resource to a terminal, and generates a downlink control channel including information of the allocated resource and a transmission time of a next downlink control channel. Further, the base station transmits the downlink control channel to the terminal. | 01-16-2014 |
20140016619 | METHOD AND APPARATUS FOR TRANSMITTING FRAMES IN TALK-AROUND DIRECT COMMUNICATION - A permutated channel structure based on a block structure in talk-around direct communication is provided. A dedicated subchannel interferes with only one adjacent dedicated subchannel, even with a large synchronization error, by permutating the dedicated subchannels by cyclic shifts, whereby diversity gain can be maintained and interference between adjacent channels can be minimized. | 01-16-2014 |
20140017991 | SIGNALLING METHOD FOR DIRECT COMMUNICATION BETWEEN TERMINALS - A signaling method for a terminal that performs direct communication between terminals terminal is disclosed. A transmitting terminal transmits a link establishment request message for establishing a link to a receiving terminal, and the receiving terminal transmits a link establishment response message responding to this message to the transmitting terminal. The link establishment request message includes a field indicating a flow to use if the receiving terminal acquires a token. | 01-16-2014 |
20140038580 | METHOD FOR COMMUNICATION OF BASE STATION AND TERMINAL - A method of performing communication of a terminal includes the terminal transmitting state information thereof to a base station, and the terminal receiving a mode change request from the base station when the terminal is selected by the base station. | 02-06-2014 |
20140073372 | METHOD AND APPARATUS FOR TRANSMITTING SYNCHRONIZATION SIGNAL IN TALK-AROUND DIRECT COMMUNICATION NETWORK - A method and apparatus for transmitting a synchronization signal in a talk-around direct communication network is provided. The method includes: determining one of a plurality of second windows included in a first window as a synchronization reception window; selecting one of a plurality of synchronization slots included in the second windows as a first synchronization slot; transmitting a first synchronization signal through the first synchronization slot included in the second windows, excluding the synchronization reception window; detecting a second synchronization signal transmitted from other terminals using the first synchronization slot included in the synchronization reception window; and determining that a collision from amongst the synchronization signals has occurred based on the detection result. | 03-13-2014 |