| Patent application number | Description | Published |
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| 20090190560 | UPLINK SYNCHRONIZATION REQUEST METHOD IN MOBILE COMMUNICATION SYSTEM, CDMA ALLOCATION IE THEREOF, AND APPARATUS USING THE SAME - The present invention relates to an uplink synchronization request method in a mobile communication system, a CDMA allocation information element structure thereof, and an apparatus using the same. For this purpose the uplink synchronization request method includes: when up-link traffic is generated, determining whether an uplink synchronization error occurs; when the uplink synchronization error occurs, calculating a timing adjustment value; and transmitting a bandwidth request code including the calculated timing adjustment value to a base station and performing a band-width request. According to the present invention, the PSS compares a reference adjustment value and an arrival time of a downlink preamble to calculate uplink synchronization timing and synchronize an uplink of the PSS that requests bandwidth allocation through a bandwidth request ranging process to thereby maximize resource use efficiency in the uplink synchronization. | 07-30-2009 |
| 20090196192 | POWER CONTROL AND SCHEDULING METHOD IN CONSIDERATION OF INTERFERENCE LEVELS BETWEEN NEIGHBOR SECTORS IN COMMUNICATION SYSTEM - In order to perform uplink scheduling for a terminal, a base station receives information on uplink interference due to the terminal from neighbor base stations, transmits the information on the uplink interference to the terminal, receives information on transmission power of a feedback channel from the terminal through the feedback channel, compares the transmission power of the feedback channel and reception power of the feedback channel so as to estimate transmission loss, and performs uplink scheduling for the terminal by reflecting the transmission loss. | 08-06-2009 |
| 20090239546 | METHOD AND APPARATUS FOR ALLOCATING RADIO RESOURCE IN COMMUNICATION SYSTEM - To transmit resource allocation information on a plurality of radio resources to a terminal, a resource allocation device expresses a radio resource that is differently allocated from before the resource allocation information is transmitted among the plurality of radio resources in a radio resource pattern sequence, generates resource allocation information on the plurality of radio resources based on the radio resource pattern sequence, and transmits the radio resource pattern sequence and the resource allocation information, or a compressed pattern sequence corresponding to the radio resource pattern sequence and the resource allocation information, to the terminal through a frame. | 09-24-2009 |
| 20090252089 | PACKET RECEIVING AND TRANSMITTING METHOD - An embodiment of the invention provides a method of receiving packets from a transmitting station at a receiving station in a mobile communication system. The packet receiving method includes receiving a radio resource including a data packet and a packet indicator related to the data packet, identifying the packet indicator, and processing the data packet according to the content of the packet indicator. Another embodiment of the invention provides a method of transmitting packets from a transmitting station to a receiving station in a mobile communication system. The packet transmitting method includes receiving a response signal of a first data packet from the receiving station, allocating a second data packet to a radio resource according to the response signal, allocating a packet indicator related to the second data packet to the radio resource, and transmitting the second data packet and the packet indicator to the receiving station. | 10-08-2009 |
| 20090290546 | METHOD OF ALLOCATING TERMINAL TO GROUP IN BASE STATION OF COMMUNICATION SYSTEM AND METHOD OF GENERATING MAP - In order to allocate a plurality of terminals to a group in a base station of a communication system, channel state information of each of the terminals is received, a group to which the terminal belongs is determined according to the channel state information with respect to the terminal, and a map including information on group burst allocation and information on sub-burst allocation with respect to a group identifier corresponding to the group is transmitted to the terminal. | 11-26-2009 |
| 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 |
| 20100008439 | SYSTEM AND METHOD FOR QUASI-ORTHOGONAL SPACE-TIME BLOCK CODING - The present invention relates to a quasi-orthogonal space-time block coding system and method. The system does not become particularly complicated since the encoding rate is given as 1 and it is possible to decode the encoded signal by using a simple linear algorithm, and system performance is increased since there is no interference component of an adjacent signal in the estimate | 01-14-2010 |
| 20100009688 | METHOD OF OPERATING RANDOM ACCESS CHANNEL IN MOBILE COMMUNICATION SYSTEM - A random access channel operating method in a mobile communication system is provided. The random access channel operating method includes: (a) selecting a transmission mode according to a load of random access channel and performing transmission to a mobile terminal; (b) receiving a message having a format corresponding to the selected transmission mode from the mobile terminal; (c) determining whether or not a preamble or data is included in the message received in (b) receiving of the message; and (d) if the data is determined to be included in the (c) determining, transmitting a response message for data reception to the mobile terminal. Accordingly, use efficiency of a random access channel can be increased by measuring a system load of the random access channel in a base station and changing a transmission format of a burst transmitted through the random access channel according to the measured load level. | 01-14-2010 |
| 20100020758 | RADIO RESOURCE REALLOCATING METHOD FOR CIRCUIT MODE - The present invention relates to a radio resource reallocation method based on the circuit mode. In order to efficiently use the radio resource in the packet-based data transmission system, a circuit mode radio resource is reallocated based on a rearrangement information element and a rearrangement counter information element by using the circuit mode. Accordingly, an unused region of the discontinuous radio resource that can be generated by resource de-allocation and resource change can be eliminated, and a resource allocation mismatch that can be generated by a MAP receiving error can be solved. | 01-28-2010 |
| 20100111224 | METHOD FOR TRANSMITTING COMMON FEEDBACK CHANNEL AND TRANCEIVER THEREFOR - Disclosed is a method for generating feedback signal patterns of common feedback channels using cyclic shift in a multiple access system, and a transceiver therefore. A method for generating feedback signal patterns includes generating first transmission symbols by adding a cyclic prefix to transmission symbols of feedback signals, and generating second and subsequent transmission symbols by cyclically shifting the first transmission symbols and then adding the cyclic prefix. | 05-06-2010 |
| 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 |
| 20100177740 | METHOD AND APPARATUS FOR TRANSMITTING FEEDBACK INFORMATION - Disclosed is an apparatus for transmitting feedback information to a base station. The feedback information transmitting apparatus receives channel allocation information, generates a plurality of payloads regarding feedback information, and multiplexes the plurality of payloads in terms of a plurality of classes so as to generate a plurality of multiplexed payloads. Subsequently, the plurality of multiplexed payloads are code multiplexed so as to generate a code division multiplexing symbol, and a channel code is applied to the code division multiplexing symbol. Then, the code division multiplexing signal applied with the channel code is transmitted to a base station through a wireless resource. Accordingly, a feedback channel that is adaptive to a channel condition is configured, such that a wireless resource for a feedback channel can be efficiently used. | 07-15-2010 |
| 20100189049 | METHOD AND APPARATUS FOR TRANSMITTING FEEDBACK INFORMATION - Disclosed are methods for transmitting feedback information, comprising receiving channel allocation information (S | 07-29-2010 |
| 20100208687 | METHOD OF PERFORMING UPLINK SCHEDULING - The present invention is provided to perform uplink scheduling of a mobile station. In order to perform the uplink scheduling of the mobile station located in a service cell, a base station receives a plurality of interference amounts each corresponding to a plurality of frequency bands associated with an uplink in at least one adjacent cell corresponding to the mobile station from the base station of at least one adjacent cell, respectively, and calculates a plurality of interference values each corresponding to the plurality of frequency bands by using the plurality of interference amounts each corresponding to at least one adjacent cell. In addition, the base station generates scheduling control information corresponding to the mobile station by using the plurality of interference values and transmits the scheduling control information to the mobile station. | 08-19-2010 |
| 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 |
| 20100232398 | RESOURCE ALLOCATION METHOD, MAP CONFIGURATION METHOD, AND RESOURCE ALLOCATION INFORMATION TRANSMISSION METHOD IN MOBILE COMMUNICATION SYSTEM - When characters are allocated to a keyboard, a plurality of consonants are divided into a plurality of groups according to pronunciation position in the oral cavity, and the groups are allocated to corresponding columns on the keyboard of 3 rows and 10 columns. A plurality of vowels are allocated to the corresponding columns according to the pronunciation position in the oral cavity. In this instance, the consonants and the vowels of which the pronunciation position are near the lips are allocated to the middle area of the area of 3 rows and 10 columns, and the consonants and the vowels of which the pronunciation position are near the vocal chords are allocated to the outer part of the area of 3 rows and 10 columns. The consonants and the vowels are allocated to the corresponding rows of the area of 3 rows and 10 columns according to usage frequency. | 09-16-2010 |
| 20100246498 | METHOD OF CONSTRUCTING RESOURCE ALLOCATION MAP FOR MOBILE COMMUNICATION SYSTEM - The present invention relates to a method of constructing a resource allocation map in a mobile communication system. In a method of constructing a map in a hierarchial pattern method in a case where a localized resource block (localized RB) and a distributed resource block (distributed RB) need to be simultaneously allocated in regards to a radio resource allocated in a previous frame or reserved with a fixed allocation, a radio resource that is reserved or not used and a radio resource that is newly allocated in a map of a current frame are classified and represented. Then, in regards to a radio resource that is allocated in a current frame, a localized RB and a distributed RB are classified and represented. As for the localized RB, allocation information is represented in an index pattern method, and as for the distributed RB, resource allocation information is represented in a toggle pattern method. | 09-30-2010 |
| 20100246531 | METHOD FOR TRANSMITTING SIGNALS - A signal receiving method includes allocating a communication resource corresponding to a mobile station over a plurality of frames, transmitting allocation information on the communication resource to the mobile station, and receiving a transmitted signal through the communication resource. Therefore, the resource allocated on the frequency axis is minimized by allocating the resource to the mobile station over a plurality of frames, and the resource is allocated within the limited power of the mobile station, thereby improving radio performance. | 09-30-2010 |
| 20100271941 | METHOD OF CHANGING FREQUENCY ASSIGNMENT STATUS IN BROADBAND WIRELESS ACCESS SYSTEM - The present invention relates to a method of changing a frequency assignment (FA) status in an improved broadband wireless access system where terminals and base stations can communicate with each other by using a plurality of FAs. In the present invention, the base station changes the status of one of secondary FA into the status of the pFA in order to adjust a load of the primary FA, and communicates with the terminal through the pFA of which status is changed. For this purpose, the base station transmits a MAP information element (IE), which requests the change of the status of the pFA, to the terminal. The MAP IE includes an action code that requests the change of the status of the pFA, and a bit map representing an FA of which status is to be changed. When a response, which represents the completion of the change of the status of the pFA of the base station, is received from the terminal, the base station changes the status of the pFA and communicates with the pFA of the terminal through a new pFA. The status of a previous pFA between the base station and the terminal is changed into the status of the sFA, and the status of one previous sFA between the base station and the terminal is changed into the status of the pFA, so that communication is performed through new FAs. According to the present invention, since the base station can change the status of a specific terminal and FAs in use according to need, it is possible to adjust loads between the FAs. Further, the base station can change the statuses of the FAs in use while continuously maintaining the access of a specific terminal. | 10-28-2010 |
| 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 |
| 20100318659 | METHOD FOR ALLOCATING RESOURCE AND RECEIVING DATA - The present invention relates to a resource allocation and data receiving method. A resource allocation message for allocating a resource for an uplink dedicated channel is transmitted to a relay station, a receipt check message on the resource allocation message is received from the relay station, and successful resource allocation is checked. | 12-16-2010 |
| 20110044281 | METHOD OF TRANSMITING CONTROL INFORMATION AND TERMINAL THEREOF - A terminal transmits control information to a base station by using a periodically allocated dedicated channel. In further detail, the terminal checks control information that needs to be transmitted, detects a priority of the checked control information, and selects control information to be transmitted to the base station based on the detected priority. The terminal forms a PDU by multiplexing the selected control information, and transmits the PDU to the base station. | 02-24-2011 |
| 20110105129 | FEMTOCELL SEARCH METHOD FOR MACRO TO FEMTO HANDOVER - The present invention relates to a femtocell search method for a handover from a macrocell to a femtocell. The present invention relates to a method for a terminal that accesses a macrocell to search a femtocell in an environment where a plurality of femtocells are overlapped in one macrocell. The terminal searches a femtocell by using a dummy preamble in order to minimize the size of neighbor cell lists broadcasted from the macrocell to the terminal. Therefore, according to the present invention, an MAC overhead can be minimized by eliminating neighbor femtocell lists in a mobile neighbor advertisement (MOB_NBR_ADV) message broadcasted from the macrocell, and the terminal can search a femtocell with a minimum scanning load by checking only a femtocell dummy preamble in a dedicated symbol of the macrocell. | 05-05-2011 |
| 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 |
| 20110126069 | METHOD AND APPARATUS FOR CONTROLLING RETRANSMISSION - In a retransmission control method, a HARQ process is performed by transmitting a HARQ burst to a receiving side. When the HARQ process for the HARQ burst is terminated with unsuccessful transmission of the HARQ burst, transmission of an ARQ block corresponding to the HARQ burst is initiated. | 05-26-2011 |
| 20110143674 | METHOD FOR AVOIDING INTERFERENCE IN MOBILE COMMUNICATION SYSTEM - Provided is an interference avoiding method in a mobile communication system. A base station detects a preamble signal of another base station during an initial setting process or a time frame of a downlink transmission section to detect an adjacent interference base station or receive a report of information on the adjacent interference base station detected by a mobile station from the mobile station. When an adjacent interference base station is detected, the base station sets a common bandwidth from among the entire usage bandwidth as an interference avoiding bandwidth according to a defined rule. The base station allocates a subchannel in the interference avoiding bandwidth to a mobile station in a cell edge area adjacent to a cell of an interference base station. | 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 |
| 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 |
