Patent application number | Description | Published |
20090122901 | METHOD FOR CONFIGURATING BASIC SIGNAL ALLOCATION UNIT AND METHOD FOR TRANSMITTING SIGNALS USING THE SAME - A method for configurating a basic signal allocation unit and a method of transmitting signals using the configurated basic signal allocation unit are disclosed. In particular, a basic frequency domain signal allocation unit is configurated by considering at least one selected from the group consisting of a signaling overhead, a size of a coherent bandwidth and a number of divisors among specific numbers and an OFDM symbol number corresponding to a multiple of a subframe unit, each of the specific numbers multiplied to a predetermined subcarrier spacing to enable a result value of the multiplication to have a difference smaller than a prescribed threshold from a divisor of a system bandwidth. And, a time domain unit is configurated by 1-subframe unit. Accordingly, signaling overhead can be efficiently reduced. | 05-14-2009 |
20100002644 | METHOD OF RETRANSMITTING DATA IN A WIRELESS COMMUNICATION SYSTEM AND APPARATUS FOR IMPLEMENTING THE SAME - A method of transmitting data in a wireless communication system is disclosed. More specifically, the method includes receiving a first group index and a second group index, wherein the first group index represents indices of a group having channel power below a specified threshold value and the second index group index represents indices of a group having channel power greater than or equal to the specified threshold value, and transmitting the data after swapping mapping locations of the first group index and the second group index. | 01-07-2010 |
20100061473 | METHOD AND APPARATUS FOR SELECTING MODULATION AND CODING SCHEME (MCS) INDEX BASED ON FREQUENCY SELECTIVITY - A method of selecting a modulation and coding scheme (MCS) index in a wireless communication system is disclosed. More specifically, the method includes measuring a frequency selectivity of a receiving channel, selecting a MCS index having a coding rate below a prescribed coding rate threshold value if the measured frequency selectivity is greater than or equal to a specified frequency selectivity threshold, and selecting the MCS index having the coding rate above or equal to the prescribed coding rate threshold value if the measured frequency selectivity is less than the specified frequency selectivity threshold. | 03-11-2010 |
20100067367 | METHOD OF SELECTING MODULATION AND CODING SCHEME (MCS) INDEX IN A WIRELESS COMMUNICATION SYSTEM AND APPARATUS FOR IMPLEMENTING THE SAME - A method of selecting a modulation and coding scheme (MCS) in a wireless communication system is disclosed. More specifically, the method includes selecting a MCS index having a coding rate that is greater than a specified coding rate threshold if a resource allocation scheme of a transmitting end employs a localized resource allocation scheme, and selecting the MCS index having the coding rate that is less than the specified coding rate threshold if the resource allocation scheme of the transmitting end employs the distributed resource allocation scheme. | 03-18-2010 |
20100157787 | METHOD FOR TRASMITTING SIGNALS FOR INCREASING THE AMOUNT OF DATA TRANSMISSION - A signal transmission method for increasing the amount of data transmission is described. When a specific transmitting side transmits signals in a signal transmission mode applied to a low-speed transmitting side, the specific transmitting side reduces the number of times of pilot transmission, thereby efficiently increasing a data transmission rate. The amount of data transmitted through one subchannel is set to be the same. To this end, improved subchannel structure, and improved system parameters in which a guard interval is adjusted are provided. | 06-24-2010 |
20100177717 | GROUPING BASED RESOURCE ALLOCATION METHOD, METHOD FOR TRANSMITTING SIGNAL USING THE SAME, AND GROUPING BASED RESOURCE ALLOCATION CONTROLLER - A grouping based resource allocation method, a method for transmitting a signal using the same, and a grouping based resource allocation controller are disclosed. That is, the method including grouping a plurality of user equipments (UEs) to a predetermined number of groups using feedback information received from the plurality of UEs and dynamically allocating communication resources to the UEs included in the groups according to the group based feedback information and the method for transmitting the signal using the same are disclosed. In addition, a grouping based resource allocation controller including a grouping module and control module for performing the above-described method in a base station is disclosed. | 07-15-2010 |
20100177723 | METHOD AND APPARATUS FOR TRANSMITTING PILOT IN A WIRELESS COMMUNICATION SYSTEM - An apparatus for transmitting a pilot and method thereof are disclosed, by which a pilot can be efficiently transmitted in a wireless communication system. The present invention, in which the resource unit is transmitted by a base station in a wireless communication system, includes forming the resource unit including a plurality of pilot resource elements (REs) and a plurality of data resource elements, allocating a plurality of pilot pairs to have a prescribed subcarrier interval and a prescribed OFDM (orthogonal frequency division multiplexing) symbol interval within the resource unit, and transmitting the resource unit to a user equipment via multi-antenna, wherein each of a plurality of the pilot pairs includes individual pilots for two different streams or antennas. | 07-15-2010 |
20100222055 | METHOD OF PERFORMING CELL RESELECTION PROCEDURE IN WIRELESS COMMUNICATION SYSTEM - A method of performing a cell reselection procedure in a wireless communication system includes evaluating priorities of a serving cell and neighbor cells, each of which use different frequency bands, performing inter-frequency measurement on a neighbor cell which has a higher priority than the serving cell, performing the inter-frequency measurement on a neighbor cell which has an equal or lower priority than the serving cell, when a signal characteristic of the serving cell is less than a threshold, and performing cell reselection according to the priorities. | 09-02-2010 |
20100303174 | APPARATUS FOR PROCESSING RECEIVED SIGNAL, METHOD THEREOF, AND METHOD FOR SELECTING MAPPING RULE - An apparatus for processing a received signal, method thereof, and mapping rule selecting method are disclosed, by which radio communications can be smoothly carried out in a receiving terminal ( | 12-02-2010 |
20110103241 | MOBILE STATION APPARATUS AND METHOD FOR TRANSMITTING SIGNALS IN WIRELESS COMMUNICATION SYSTEM - A method for transmitting signal, at a mobile station, in a wireless communication system is provided. Inter-cell interference information may be different for each frequency partition according to using a FFR scheme. Also, a parameter for controlling interference level between base stations may be different for each frequency partition. The present invention is advantageous in that, when uplink transmission is performed, system throughput and cell edge-user throughput are improved and inter-cell interference level control is efficiently performed. | 05-05-2011 |
20110126068 | SIGNAL TRANSMISSION METHOD USING MULTIPLE HARQ - A method is described for transmitting signals in a mobile communication system which splits an information block into a plurality of split-information blocks and performs a hybrid automatic repeat request (HARQ) process upon each of the split-information blocks. A method is also described for reducing control information overhead by transmitting control information only through one control channel when splitting an information block and transmitting split-information blocks through a plurality of subframes or a plurality of resource blocks. The segmentation of the information block is performed in a physical layer to reduce medium access control (MAC) overhead and to simplify implementation. | 05-26-2011 |
20110128901 | METHOD FOR SAVING POWER IN A MULTI-CARRIER WIRELESS ACCESS SYSTEM - A method for saving power in a multi-carrier wideband wireless access system is provided. A method for saving the power of a receiver in a multi-carrier wireless communication system includes acquiring multi-carrier information from a transmitter on a primary carrier, entering one or more secondary carriers satisfying a predetermined power saving mode entry condition out of one or more secondary carriers included in the multi-carrier information into a power saving mode, and receiving data during a listening interval according to the power saving mode on the one or more secondary carriers entering the power saving mode. The multi-carrier information includes at least one of information about a plurality of available carriers, information indicating the primary carrier and the one or more secondary carriers out of the plurality of available carriers, and information about the power saving mode entry condition of the one or more secondary carriers. | 06-02-2011 |
20110188441 | METHOD FOR ALLOCATING RESOURCE FOR MULTICAST AND/OR BROADCAST SERVICE DATA IN WIRELESS COMMUNICATION SYSTEM AND AN APPARATUS THEREFOR - The present invention relates to a wireless communication system, and more particularly, to a method for allocating a resource for multicast and/or broadcast service data in a wireless communication system and apparatus therefore. The present invention includes the steps of dividing a certain frequency band into a plurality of subbands, and allocating at least one subband to the MBS data from a subband having a lowest index among the plurality of subbands, wherein the MBS data is multiplexed with unicast data. | 08-04-2011 |
20110194423 | MOBILE STATION APPARATUS AND METHOD FOR TRANSMITTING SIGNALS IN WIRELESS COMMUNICATION SYSTEM - A method for transmitting signal, at a mobile station, in a wireless communication system is provided. Inter-cell interference level control parameter information may be different for each frequency partition due to use of an FFR scheme. This method is advantageous in that, when uplink transmission is performed, system throughput and cell edge-user throughput are improved and inter-cell interference level control is efficiently performed, thereby improving a Signal to Interference plus Noise Ratio (SINR) at the receiving end. | 08-11-2011 |
20110255498 | Method for Transmission of Downlink Control Message in Mobile Communication System - A method for transmission of a downlink control message in a mobile communication system is provided. Said method comprises a step wherein user-specific control information (USCI) on a plurality of user equipment (UE) is arranged to generate a series of control message at a base station and a step wherein said control messages that have been generated are transmitted. The arrangement sequence value of a specific type of USCI within said control message is used as channel allocation information regarding the UE to which said specific USCI is transmitted. | 10-20-2011 |
20110255499 | METHOD FOR RECEIVING CONTROL INFORMATION AND TERMINAL DEVICE USING THE SAME - Disclosed are a method for receiving control information and a terminal device using the same. The terminal is able to receive a non-user-specific A-MAP IE of a specific sub-frame from a base station according as a broadcasting message is transmitted from the specific sub-frame, wherein the non-user-specific A-MAP IE includes an indicator showing that the non-user-specific A-MAP IE is configured in an extended form. The terminal can also obtain scheduling information based on the received indicator, wherein the scheduling information is configured by the type of the extended non-user-specific A-MAP IE. Then, the terminal is capable of decoding the broadcast message in a certain sub-frame based on the obtained scheduling information. | 10-20-2011 |
20110299440 | METHOD FOR TRANSMITTING AND RECEIVING RESOURCE ALLOCATION INFORMATION AND MOBILE STATION APPARATUS USING THE SAME - A method for receiving control information and a control information signaling receiving method are disclosed. If A-MAP information is allocated and transmitted, signaling overhead is greatly reduced, resulting in improved system performance. In addition, the method increases the number of data transmission areas in inverse proportion to control signaling overhead. In accordance with the method for receiving control information signaling, a mobile station correctly recognizes a location to which A-MAP information is allocated and transmitted, resulting in increased control information decoding efficiency. | 12-08-2011 |
20110299495 | METHOD FOR TRANSMITTING AND RECEIVING RESOURCE ALLOCATION INFORMATION AND MOBILE STATION APPARATUS USING THE SAME - A method for allocating the resources of a remaining region other than a region carrying a SuperFrame Header (SFH) and signaling the resource allocation is disclosed. A Mobile Station (MS) receives resource allocation information about a remaining region other than a region carrying an SFH in a predetermined channel bandwidth by the SFH from a Base Station (BS) and decodes the received resource allocation information. The MS decodes control information efficiently by receiving repetition number information about a sub_secondary SFH (sub_S-SFH) or sub_secondary Broadcast CHannel (sub_S-BCH) from the BS by a Primary SFH (P-SFH) or Primary BCH (P-BCH). | 12-08-2011 |
20120063403 | METHOD FOR TRANSMITTING A COMMON CONTROL CHANNEL, AND FEMTO BASE STATION FOR SAME - The present invention relates to a femto base station. More particularly, the present invention relates to a method for transmitting a common control channel and to a femto base station for the same. The present invention relates to a method for transmitting a common control channel, comprising a step in which the femto base station acquires segment information from a macro base station which overlays the femto base station; a step of identifying, using the segment information, a time segment used by the macro base station in transmitting the common control channel; and a step of transmitting a common control channel of the femto base station on a time segment other than the time-segment identified in the previous step. The present invention also relates to a femto base station for the method. | 03-15-2012 |
20120071182 | INTER-CELL INTERFERENCE MITIGATING METHOD IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR - Disclosed is a method for a serving base station in a wireless communication system to mitigate inter-cell interference. More specifically, the method comprises the steps of: allocating a first resource for a terminal existing in a first region in which the coverage of the serving base station and the coverage of a neighboring base station are overlapped with each other; and allocating a second resource with the first resource for a terminal existing in a second region of the coverage of the serving base station, which is outside of the coverage of the neighboring base station. Desirably, the first resource is for the serving base station only with reuse factor of ½, and the second resource is shared with the neighboring base station with reuse factor of 1. | 03-22-2012 |
20120088515 | METHOD FOR TRANSMITTING A SIGNAL FOR A LOCATION-BASED SERVICE IN A WIRELESS COMMUNICATION SYSTEM, AND APPARATUS FOR SAME - The present invention relates to a wireless communication system. Particularly, in configuring a location estimation subframe for determining the location of a terminal in a wireless communication system, the present invention involves replacing a portion of repeating patterns of a channel estimation pilot in the location estimation subframe with a location estimation pilot. In this way, the present invention is capable of transmitting a location estimation reference signal for a location-based service to the terminal while minimizing influences on an existing wireless frame structure. | 04-12-2012 |
20120127898 | APPARATUS AND METHOD FOR PERFORMING COMMUNICATION USING H-FDD FRAME STRUCTURE IN MOBILE COMMUNICATION SYSTEM - Disclosed are an apparatus and a method for performing communication using a half-frequency division duplex (H-FDD) frame structure in a mobile communication system. A user equipment for performing communication using an H-FDD frame structure according to the present invention comprises an RF unit in which each user equipment group receives and transmits signals using the H-FDD frame structure wherein the order of the downlink zone and uplink zone are reversely allocated to each of the groups. The downlink zone and uplink zone, which are allocated to each of the user equipment groups in the H-FDD frame structure, include a sub-frame wherein one or more symbols are allocated to idle time slots or are punctured. Each of the user equipment groups can receive and transmit signals using symbols that are not allocated to the idle time slots or are not punctured in the sub-frame. | 05-24-2012 |
20120142385 | Method of transmitting a antenna control signal - An antenna switching method in a wireless access system is disclosed. A method of transmitting antenna information according to one embodiment of the present invention includes the steps of receiving an uplink request message for closed-loop antenna switching from a mobile station, transmitting a reference field including prescribed modulation and coding scheme (MCS) information to the mobile station, and transmitting a differential field including the antenna information to the mobile station. In this case, the antenna information can contain a selected antenna index. | 06-07-2012 |