| Patent application number | Description | Published |
|---|
| 20090052470 | METHOD FOR TRANSMITTING PILOT FOR MULTIPLE CARRIER SYSTEM - A method of transmitting pilot signals in a system which performs communication using two or more earners comprises transmitting first pilots and second pilots from at least one user equipment to a base station, the first and second pilots, which are transmitted from the at least one user equipment, being multiplexed by code division multiplexing, and the first and second pilots, which are transmitted from a specific user equipment, having different transmission powers, and transmitting data from the at least one user equipment to the base station depending on the first pilots and the second pilots. Since many UEs can transmit CQ pilots, exact channel estimation can be performed and thus communication efficiency can be improved. | 02-26-2009 |
| 20090130986 | METHOD OF TRANSMITTING CHANNEL QUALITY INFORMATION IN MOBILE COMMUNICATION SYSTEM - A method of exchanging channel quality information between a base station and a user equipment in a mobile communication system is disclosed. A method of transmitting channel quality information in a mobile communication system which transmits channel quality information from a user equipment to a base station comprises transmitting channel quality information, which is measured based on a signal received from the base station, to the base station, receiving feedback information of the channel quality information from the base station, and transmitting difference information to the base station, the difference information for matching the channel quality information transmitted from the user equipment with channel quality information received by the base station based on the feedback information. | 05-21-2009 |
| 20090240999 | METHOD FOR RESOURCE ALLOCATION IN HARQ - A resource allocation method for use in a system for performing a decoding function by combining an first-transmitted packet with a re-transmitted packet includes: transmitting a packet using N resource blocks (where N=integer >0); receiving a first negative-acknowledgement (NACK) signal for the packet; and re-transmitting the packet using M resource blocks according to the first NACK signal (where M=N >integer >0). Therefore, the resources can be efficiently allocated during the re-transmission. | 09-24-2009 |
| 20090245399 | METHOD AND APPARATUS FOR INSERTING GUARD INTERVAL IN A MOBILE COMMUNICATION SYSTEM - A method for inserting a guard interval in an OFDM or OFDMA mobile communication system and a transmitting apparatus therefore are disclosed. The method for inserting a guard interval in an OFDM or OFDMA mobile communication system comprises rotating a phase of each symbol for a specific symbol stream, converting the phase-rotated symbol stream into a time-domain symbol stream, and performing at least one of copying a rear part of the time-domain symbol stream to insert the rear part of the time-domain symbol stream to the front of the time-domain symbol stream and copying a front part of the time-domain symbol stream to insert the front part of the time-domain symbol stream to the end of the time-domain symbol stream. | 10-01-2009 |
| 20090274220 | METHOD FOR TRANSFORMING DATA, AND METHOD FOR TRANSMITTING AND RECEIVING DATA USING THE SAME - A method for transforming data to reduce an amount of data in a communication system equipped with several sub-carriers, and a data transmission method using the same are disclosed. The method for transmitting data using a Discrete Cosine Transform (DCT) in a communication system based on a plurality of sub-carriers includes: a) performing a Discrete Cosine Transform (DCT) on first data; b) selecting a predetermined number of data from among the DCT-processed first data, and performing data processing on the selected data; and c) transmitting the data-processed resultant data to a reception end. A method for reducing an amount of overhead of transmission data for use in the multi-antenna communication system is disclosed. | 11-05-2009 |
| 20090290653 | METHOD FOR TRANSMITTING PILOT FOR MULTIPLE CARRIER SYSTEM - A method of transmitting pilot signals in a system which performs communication using two or more earners comprises transmitting first pilots and second pilots from at least one user equipment to a base station, the first and second pilots, which are transmitted from the at least one user equipment, being multiplexed by code division multiplexing, and the first and second pilots, which are transmitted from a specific user equipment, having different transmission powers, and transmitting data from the at least one user equipment to the base station depending on the first pilots and the second pilots. Since many UEs can transmit CQ pilots, exact channel estimation can be performed and thus communication efficiency can be improved. | 11-26-2009 |
| 20100098015 | METHOD FOR TRANSMITTING AND RECEIVING A SIGNAL TO PROTECT AGAINST ERRONEOUS FEEDBACK INFORMATION - A method for providing precoding weights for data symbols of data control subframes includes generating a downlink frame having control subframes which individually correspond to one of a plurality of downlink data subframes, and inserting weight information into each of the control subframes, such that the weight information is to be applied to data symbols present in the corresponding one of the data subframes. The method further includes transmitting the control subframes and the inserted weight information to a receiving device. | 04-22-2010 |
| 20100135240 | METHOD OF ALLOCATING RADIO RESOURCES IN MULTI-CARRIER SYSTEM - A method of allocating radio resources in a multi-carrier system is disclosed, by which a signaling message can be efficiently transmitted according to necessity of a user equipment. In a user equipment of a mobile communication system transceiving data using a plurality of subcarriers, the present invention includes the steps of if the signaling message to be transmitted is generated in the user equipment, generating a preamble sequence according to a user equipment identifier to identify the user equipment, transmitting a preamble signal including the preamble sequence and the signaling message to a base station, and receiving an acknowledgement signal for the preamble signal generated according to the user equipment identifier. | 06-03-2010 |
| 20100156833 | ELECTRONIC DEVICE HAVING TOUCH SCREEN AND METHOD FOR CHANGING DATA DISPLAYED ON THE TOUCH SCREEN - In a time data display mode, a time data is displayed in at least one display block partially assigned to a touch screen of an electronic device. After the touch gesture or the drag gesture is detected in one of the display block, the current time data in the display block can be replaced with a new time data according to the touch gesture or the drag gesture. The new time data may be a following time data or a previous time data which can be determined according to a location of the touch gesture, or a direction and a distance of the drag gesture. In addition, the extent of a change in the time data may be determined according to duration of the touch gesture or a speed of the drag gesture. | 06-24-2010 |
| 20110051672 | RESOURCE ALLOCATION METHOD AND A METHOD FOR TRANSMITTING/RECEIVING RESOURCE ALLOCATION INFORMATION IN MOBILE COMMUNICATION SYSTEM - A resource allocation method and a method for transmitting resource allocation information in a mobile communication system are disclosed. That is, a LVRB (PRB) and a DVRB which are the units of a scheduling resource are defined and a resource allocation method and a method for transmitting resource allocation information using the same are disclosed. In the LVRB, a part bitmap scheduling method using a LVRB set is suggested and a method for constructing resource allocation information using the same is suggested. In the DVRB, a method for defining the DVRB using PRBs in a subframe is suggested and a method for constructing resource allocation information using the same when scheduling is performed using the DVRB constructed by the defined method is suggested. In order to prevent interference and collision from occurring due to the complete matching of the DVRBs in respective cells, a method using different DVRBs in the respective cells is suggested. | 03-03-2011 |
| 20110085479 | ENCODING UPLINK ACKNOWLEDGMENTS TO DOWNLINK TRANSMISSIONS - A portable device, such as a mobile terminal or user equipment, for encoding uplink acknowledgments to downlink transmissions. The portable device includes a receiver configured to receive a plurality of data blocks, such that each of the data blocks include an associated cyclic redundancy check (CRC), and a processor configured to determine received status for each of the data blocks by checking the CRC of each of the data blocks. The portable device further includes a transmitter for transmitting a response sequence which indicates the received status of all of the data blocks. | 04-14-2011 |
| 20110090887 | Method and Apparatus for Scanning Existing Networks in TVWS - A method and an apparatus for scanning existing networks in TV White Space are disclosed. For scanning existing networks at a station to operate as an unlicensed device in a regulatory domain where a licensed device and the unlicensed device are permitted to operate, the method comprises: receiving a white space map (WSM) comprising information for available channels to be used for the unlicensed device to operate a wireless local area network (WLAN) operation and maximum transmission powers allowed for each of the available channels from an enabling station, wherein the enabling station is a station determining the available channels at its location using its own geographic location identification and a regulatory database access capability; and scanning the existing networks on the available channels identified within the received WSM. | 04-21-2011 |
| 20110096717 | METHOD FOR TRANSMITTING RELAY NODE-SPECIFIC CONTROL CHANNEL - A method for transmitting a downlink signal in a Frequency Division (FD) type base station is disclosed. The method includes transmitting a second downlink control channel specific to a second base station, when a first downlink control channel specific to a first base station is completely transmitted on a entire frequency band in a subframe, in a remaining region except a predetermined transmission region of a first downlink shared channel specific to the first base station in the subframe; and transmitting a second downlink shared channel including data of the RN in the remaining region, when the second downlink control channel is completely transmitted. | 04-28-2011 |
