Patent application number | Description | Published |
20090196254 | METHOD OF PERFORMING HANDOVER IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a handover method of a mobile station in a wireless communication system, and a base station and a mobile station for the same. A list of neighboring base stations that can accept a handover of a mobile station is shared by the mobile station and a serving base station before the mobile station performs the handover so as to reduce handover delay time in a high speed environment through addition, the active base station set managed by the mobile station and the serving base station can be managed with consideration of radio signal quality and resource state of each of the neighboring base stations included in the active base station set, and thus when the mobile station attempts a network re-entry process to a target base station that is not ready for the handover of the mobile station due to a loss of a handover control message, a handover failure due to a lack of radio resources can be prevented, thereby increasing a handover success rate. | 08-06-2009 |
20090325605 | METHOD FOR LOCATION DETERMINATING - A method for measuring a position includes: allocating a first ranging code and a first ranging region for a mobile station; receiving a second ranging code and allocation information on a second ranging region of the mobile station from a neighboring base station; transmitting the first ranging code and the second ranging code to the mobile station; receiving the first ranging code from the mobile station in the first ranging region; calculating a received timing adjustment value of the first ranging code; receiving a received timing adjustment value of the second ranging code from the neighboring base station; and measuring the position of the mobile station according to the received timing adjustment value of the first ranging code and the received timing adjustment value of the second ranging code. Therefore, the cost and efficiency can be improved by measuring the position of the mobile station by changing the ranging method used in the conventional system. | 12-31-2009 |
20100220691 | METHOD AND APPARATUS FOR TRANSMITTING BROADCASTING INFORMATION - In a method of transmitting broadcasting information, the broadcasting information is classified into fixed broadcasting information for transmitting to a fixed position of a super-frame and variable broadcasting information to be variably transmitted in the form of a broadcasting message. The fixed broadcasting information may be classified into primary broadcasting information having a short cycle and secondary broadcasting information having a long cycle. | 09-02-2010 |
20100272002 | METHOD FOR TRANSMITTING AND RECEIVING MULTICAST AND BROADCAST SERVICE - A terminal receives a map scheduling interval that is set to be greater than a multicast and broadcast service map transmission cycle by a base station from the base station, and receives a multicast and broadcast service map from the base station according to the received map scheduling interval. | 10-28-2010 |
20100284332 | METHOD FOR TRANSMITTING AND RECEIVING DATA IN MULTI CARRIER WIRELESS ACCESS SYSTEM - There is provided a method in which a base station transmits downlink data in a wireless access system supporting multi-carriers. The method comprising negotiating with a terminal about a sleep mode parameter including information on a sleep window and a listening window, if the terminal is operating in a sleep mode, transmitting information on a carrier used for data transmission among the multi-carriers to the terminal through at least one of a medium access control (MAC) header, a MAC control message, and a control channel and transmitting data to the terminal based on the information during the listening window. Accordingly, waste of radio resources can be prevented by making efficient use of the multi-carriers even though the terminal is operating in the sleep mode. | 11-11-2010 |
20100285831 | METHOD OF PERFORMING HANDOVER IN MULTI CARRIER WIRELESS ACCESS SYSTEM - There is provided a method for handover of a terminal in a wireless access system using multi-carrier operation. The method comprises: receiving a handover command message from a serving base station; and performing network reentry to a target base station based on the handover command message, wherein the handover command message includes information required for handover to the target base station and information on whether the target base station supports handover using multi-carriers. Accordingly, it is possible to efficiently perform the handover in the wireless access system supporting the multi-carriers. | 11-11-2010 |
20110002253 | METHOD FOR MANAGING POWER SAVING OPERATION IN WIRELESS COMMUNICAITON SYSTEM - In a power saving operation management method in a mobile communication system, a base station receives a sleep mode entering request message from a mobile station desiring to enter the sleep mode, determines a sleep period type and a parameter by analyzing a combination of radio channels between the mobile station and the base station, and transmits a sleep mode entering response message including the sleep period type and the parameter. | 01-06-2011 |
20110064053 | HANDOVER MANAGEMENT METHOD IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a handover management method that can reduce a service interruption time due to handover of a mobile station in a wideband wireless access system. A handover management method according to an exemplary embodiment of the present invention includes receiving a handover request message from a serving base station, transmitting a handover response message that includes a basic channel identifier to be allocated to a mobile station, receiving a ranging request message from the mobile station using the basic channel identifier, and using the basic channel identifier to start uplink/downlink communication with the mobile station. | 03-17-2011 |
20110158169 | METHOD OF TRANSMITTING CONTROL INFORMATION IN MOBILE COMMUNICATION SYSTEM AND METHOD OF ACKNOWLEDGING THE CONTROL INFORMATION - A method of acknowledgment by a receiver includes: receiving a control message via a payload of a medium access control protocol data unit (MAC PDU) from a transmitter or receiving control information through an extended header or signaling header of the MAC PDU; and transmitting an acknowledgment of the control message or control information through an acknowledgment extended header containing information about whether the acknowledgment is an acknowledgment of the control message or an acknowledgment of the control information. | 06-30-2011 |
20110228717 | METHOD AND APPARATUS FOR MANAGING CARRIER OF MULTICAST AND BROADCAST SERVICE - A method of managing carriers in a terminal of a multi-carrier system is provided. The method includes switching from a primary carrier to an MBS carrier for an MBS, receiving MBS-associated data from a base station through the MBS carrier, returning to the primary carrier from the MBS carrier after receiving the MBS-associated data, and communicating with the base station through the primary carrier. | 09-22-2011 |
20120002582 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING MBS DATA - An MBS transmitting apparatus allocates a plurality of subbands of an MBS transmission carrier to an MBS region and a non-MBS region and generates region allocation information of the MBS region and the non-MBS region. The MBS transmitting apparatus allocates the subbands, allocated to the MBS region, to at least one MBS zone and generates MBS zone allocation information of the at least one MBS zone. The MBS transmitting apparatus transmits the region allocation information and the MBS zone allocation information and transmits MBS data through the subbands allocated to the MBS region. | 01-05-2012 |
20120008638 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING MULTICAST BROADCAST SERVICE DATA - An MBS transmitting apparatus allocates a plurality of time intervals of an MBS transmission carrier to an MBS region and a non-MBS region and generates region allocation information of the MBS region and the non-MBS region. The MBS transmitting apparatus allocates the time intervals, allocated to the MBS region, to one or more MBS zones and generates MBS zone allocation information of the one or more MBS zones. The MBS transmitting apparatus transmits the region allocation information and the MBS zone allocation information and transmits the MBS data through the time intervals allocated to the MBS region. | 01-12-2012 |
20120036222 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING MULTICAST BROADCAST SERVICE - A multicast broadcast service (MBS) receiving device establishes an MBS connection with an MBS transmitting device through a connection establishment message. When it is determined to receive MBS right after establishing the MBS connection, the MBS receiving device starts to receive the MBS right after establishing the MBS connection. When it is determined to not receive MBS right after establishing the MBS connection, the MBS receiving device transmits an MBS report message to the MBS transmitting device and then starts to receive the MBS. | 02-09-2012 |
20120042222 | TRANSMITTING APPARATUS AND RETRANSMITTING METHOD - In a retransmitting method, at least one ARQ block included in a first PDU is fragmented into a plurality of ARQ sub-blocks, and at least one second PDU is generated from the plurality of ARQ sub-blocks. The second PDU includes a payload including an extended header and at least some of a plurality of ARQ sub-blocks. The extended header includes a field representing a sequence number of the first ARQ sub-block belonging to the payload. | 02-16-2012 |
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 |
20120113943 | HANDOVER METHOD IN WIRELESS COMMUNICATION SYSTEM - Disclosed is a method of a handover in a wireless communication system. The method includes transmitting a handover request message to the service BS, and receiving a handover command message from the service BS in response to the handover request message. Multi-carriers are assigned to a terminal in advance right before a handover, and all or some of the multi-carriers are activated right after the handover. Therefore, multi-carrier are effectively utilized. | 05-10-2012 |
20120115481 | METHOD FOR PROVIDING AND RECEIVING RELIABLE SERVICE IN WIRELESS COMMUNICATION SYSTEM - A method for providing reliable wireless service in a femto system is provided. The method includes broadcasting information about out-of-service, which notifies that an air interface based on the femto BS is disabled, to user equipment (UE); and disabling the air interface. The information about the out-of-service comprising an identifier about a recommended BS that is another BS which the UE can enter. | 05-10-2012 |
20120176985 | METHOD OF UPDATING SYSTEM INFORMATION IN WIRELESS COMMUNICATION SYSTEM - The present invention provides a method of a Base Station (BS) updating system information using a superframe structure in a wireless communication system, comprising transmitting a primary header including system scheduling information pertinent to an update of the system information and transmitting an updated secondary header. The system scheduling information comprises secondary header change state information indicating a change state of the updated secondary header, secondary header applying information indicating whether the secondary header change state information is applied to a current system, and a secondary header change indicator indicating the updated secondary header. | 07-12-2012 |
20120190397 | METHOD FOR TRANSMITTING SIGNAL IN MACHINE TO MACHINE COMMUNICATION - A method of relaying a base station that operates as a relay link in order for a first base station to communicate with a second base station that is connected to backhaul includes: forming, by the first base station, a relay station with the second base station; and starting, by the first base station, a relay mode. | 07-26-2012 |
20120201197 | METHOD FOR TRANSMITTING UPLINK DATA, AND BASE STATION AND TERMINAL SUPPORTING THE SAME IN MOBILE COMMUNICATION SYSTEM - Provided are a method for transmitting uplink data by a terminal in a mobile communication system, the method comprising: when data to be transmitted to uplink is generated in an idle mode, transmitting a ranging request message including at least one of a group identifier allocated to each terminal group to which the terminal belongs, an offline transmission indicator indicating transmission of uplink data in a state in which the terminal is not connected to a network, and uplink data, to a base station; and receiving a ranging response message confirming that the uplink data has been successfully transmitted, from the base station. | 08-09-2012 |
20120257556 | METHOD FOR TRANSMITTING SIGNAL IN MACHINE TO MACHINE COMMUNICATION - A method in which a base station transmits a signal to a plurality of terminals in a machine to machine (M2M) communication system, the method including: allocating an M2M device group ID (MGID) that identifies a terminal group to at least one of the plurality of terminals; and sustaining the MGID when the terminal that belongs to the terminal group is in an idle state. | 10-11-2012 |
20120257564 | METHOD FOR RECEIVING MOBILE MULTICAST BROADCAST SERVICE IN MULTI-CARRIER WIRELESS COMMUNICATION SYSTEM - Method receiving Multicast Broadcast Service (MBS) in a wireless communication system is provided. The method comprises receiving a Dynamic Service Addition (DSA) message through a primary carrier, from a Base Station (BS); switching from the primary carrier to a secondary carrier based on the DSA message; receiving an MBS Configuration message through the secondary carrier, from the BS; and receiving MBS data through the secondary carrier based on the MBS Configuration message, from the BS. | 10-11-2012 |
20120287839 | METHOD AND APPARATUS FOR UPDATING MULTICAST AND BROADCAST SERVICE - When MBS information is updated, a base station transmits a first message to a terminal. The first message includes a service flow update indicator for indicating a scheme for describing a current MBS identifier (ID) and flow ID to be updated, information on the current MBS ID and flow ID described by the scheme indicated by the service flow update indicator, and new MBS information. The terminal transmits a second message to the base station in response to the first message. | 11-15-2012 |
20120327856 | BASE STATION, MOBILE STATION, PAGING MESSAGE TRANSMITTING METHOD, AND PAGING MESSAGE RECEIVING METHOD - A base station transmits a first message including indices of a plurality of carriers and information for the plurality of carrier to a mobile station. Also, the base station transmits a second message including a bitmap representing whether each of the plurality of carriers corresponds to a paging carrier used for transmitting a paging message, to the mobile station. The base station selects a paging transmission carrier for the mobile station from among the plurality of carriers and transmits a paging message through the selected paging transmission carrier. | 12-27-2012 |
20120327935 | METHOD AND APPARATUS FOR MANAGING CONFIGURATION INFORMATION OF MULTICAST AND BROADCAST SERVICE - For managing MBS configuration information, a terminal decodes an MBS configuration message including configuration information for an MBS operation and a lifetime, and then decodes an MBS configuration message that is transmitted at a time that the lifetime indicates. | 12-27-2012 |
20120329506 | METHOD FOR TRANSMITTING INFORMATION OF NEIGHBORING BASE STATION IN WIRELESS COMMUNICATION SYSTEM - Provided is a method for obtaining superframe header (SFH) information in a neighboring base station advertisement (NBR-ADV) message at a terminal. In the method, a NBR-ADV message having SFH information set per each carrier is received from a serving base station. The SFH information of each carrier is obtained from the NBR-ADV message. In the obtaining the SFH information of each carrier, SFH information of a corresponding carrier is obtained based on SFH information of a previous carrier when a predetermined field is set as a predetermined value. | 12-27-2012 |
20130010593 | METHOD FOR MANAGING LOAD, METHOD FOR SYSTEM ACCESS, BASE STATION AND TERMINAL IN MOBILE COMMUNICATION SYSTEM - A system access method of a terminal in a mobile communication system according to an exemplary embodiment of the present invention includes receiving a control channel or a control message including resource allocation information, an access restriction indicator, and information about a random access region from a base station, and determining whether or not to access the base station according to a set value of the access restriction indicator. | 01-10-2013 |
20130010671 | METHOD AND APPARATUS FOR MANAGING MULTICAST AND BROADCAST SERVICE RESOURCE - When zone allocation information of sub-bands is changed, a terminal receives a new MBS configuration message after a lifetime of an MBS configuration message at a time when the changed zone allocation information is received is expired. The terminal applies the changed zone allocation information at the beginning of the first MSI of the new MBS configuration message. | 01-10-2013 |
20130016675 | METHOD FOR REPORTING EMERGENCY AND TERMINAL IN MOBILE COMMUNICATION SYSTEMAANM CHA; Jae SunAACI DaejeonAACO KRAAGP CHA; Jae Sun Daejeon KRAANM JUNG; SoojungAACI DaejeonAACO KRAAGP JUNG; Soojung Daejeon KRAANM KIM; SeokkiAACI Osan-siAACO KRAAGP KIM; Seokki Osan-si KRAANM YOON; Chul SikAACI SeoulAACO KRAAGP YOON; Chul Sik Seoul KRAANM LIM; Kwang JaeAACI DaejeonAACO KRAAGP LIM; Kwang Jae Daejeon KR - Disclosed is a method for a terminal to report an emergency in a mobile communication system, the method including detecting an emergency and transmitting an emergency report header to a base station to notify the base station of the emergency, the emergency report header including a field indicating a signaling header for emergency reporting. | 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 |
20130029697 | BASE STATION, MOBILE STATION, PAGING MESSAGE TRANSMITTING METHOD, AND PAGING MESSAGE RECEIVING METHOD - A base station allocates a paging group to a mobile station. The base station transmits, to a mobile station, a first message including indices of a plurality of carriers and information for the plurality of carriers and a second message including paging group information representing whether each of a plurality of carriers supports each of one or more paging groups. Then, the base station selects a paging transmission carrier for the mobile station from among at least one paging carrier corresponding to the paging group allocated to the mobile station and transmits the paging message through the paging transmission carrier. | 01-31-2013 |
20130039255 | BASE STATION, MOBILE STATION, PAGING MESSAGE TRANSMITTING METHOD, AND PAGING MESSAGE RECEIVING METHOD - A method for a base station supporting multicarrier operation to transmit a paging message is provided. The base station determines a first time point for multicast broadcast service (MBS)-related information and transmits the MBS-related information through a first carrier at the first time point. Also, the base station determines a second time point for transmitting a paging message to a mobile station, determines a second carrier for transmitting the paging message to the mobile station, and transmits the paging message through the second carrier at the second time point. Here, the second time point is different from the first time point. | 02-14-2013 |
20130107789 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DATA | 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 |
20140016551 | METHOD AND APPARATUS FOR IDENTIFYING COMMUNICATION LINKS, AND COMMUNICATION METHOD - A communication method for a third device that controls a first link established directly between a first device and a second device is provided. The third device allocates a first link identifier for identifying the first link. The third device transmits first information including the first link identifier to the first device and the second device. The third device receives, from the first device and the second device, second information including allocation acceptance information indicating the acceptance or rejection of allocation of the first link identifier. | 01-16-2014 |
20140024384 | COMMUNICATION METHOD OF TERMINAL AND COMMUNICATION METHOD OF BASE STATION FOR DIRECT COMMUNICATION LINK BETWEEN TERMINALS - A communication method of a terminal and a communication method of a base station for a direct communication link between terminals are disclosed. A base station schedules a reference terminal to transmit a ranging code, and schedules target terminals to receive the ranging code. The reference terminal measures the ranging code received from the target terminals, and transmits a ranging code measurement result to the base station. The base station selects a terminal from among the target terminals to form the direct communication link with the reference terminal among the target terminals based on the ranging code measurement result. | 01-23-2014 |
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 |
20140140286 | METHOD OF DIRECT COMMUNICATION BY TERMINAL - A method for a first terminal communicating with a base station to perform direct communication with a second terminal is provided. The first terminal determines first timing for transmitting or receiving a first signal to or from the base station. Next, the first terminal determines second timing for transmitting a second signal for terminal discovery to the second terminal. When the first timing and the second timing overlap, the first terminal then changes either the first timing or the second timing. | 05-22-2014 |
20140146728 | METHOD AND APPARATUS FOR MANAGING LOW-DUTY MODE OPERATION - A method of managing a low-duty mode operation is provided by a small base station. The small base station determines a low-duty cycle pattern in which an available interval for data traffic transmission on active air interface and an unavailable interval for transmitting no data traffic are repeated, and provides a terminal with low-duty cycle pattern information. The low-duty cycle pattern information includes a length of the available interval and a start offset indicating a wireless frame at which the low-duty cycle pattern starts. | 05-29-2014 |
20140334356 | RESOURCE MANAGEMENT METHOD AND APPARATUS FOR CONTROLLING INTERFERENCE BETWEEN CELLS - An exemplary embodiment of the present invention provides a resource management method performed by a coordinator for controlling interference between cells. The coordinator receives a channel state of a second base station neighboring a first base station from the first base station. The coordinator partitions a resource based on the channel state. The coordinator allocates the partitioned resource to the first base station. In addition, the coordinator transmits a first message requesting resource management to be set to the first base station. Here, the first message includes information on the allocated resource. | 11-13-2014 |
20150045033 | METHOD OF RELAY BETWEEN DEVICES - A data relay method includes receiving a relay request from a BS, and when the relay request is accepted, relaying data between the BS and at least one external terminal, or the data relay method includes determining relaying between a first terminal among a plurality of terminals, and other remaining terminals excluding the first terminal among the plurality of terminals, and relaying data between the first terminal and the other remaining terminals. | 02-12-2015 |