| Patent application number | Description | Published |
|---|
| 20080198837 | System and method for transmitting and receiving signal in communication system - Disclosed is a method for transmitting and receiving a signal in a communication system, and a system for supporting the method. To this end, a first communication system transmits data during a first time slot and receives data during a third time slot, and a second communication system, differing from the first communication system, transmits data during a second time slot and receives data during a fourth time slot. The first and second time slots are defined by downlink frame transmission intervals which exist in the entire frame transmission interval allocated for the first communication system, and the third and fourth time slots are defined by uplink frame transmission intervals which exist in the entire frame transmission interval allocated for the first communication system, wherein the first to fourth time slots do not overlap each other. | 08-21-2008 |
| 20080205338 | METHOD AND APPARATUS FOR ALLOCATING RESOURCES IN COMMUNICATION SYSTEMS - A resource allocation method and apparatus in a communication system having backward compatibility are provided. In a transmission apparatus, a determiner determines a first frequency band for transmitting wireless resource allocation information to a terminal from among the frequency bands supporting the communication system, a MAP generator determines at least one second frequency band over which the terminal desires to receive a service and allocates wireless resources to the second frequency band, and a transmission unit transmits the wireless resource allocation information to the terminal over the first frequency band. In a reception apparatus, a reception unit receives wireless resource allocation information over a first frequency band determined by a base station and a MAP information decrypter determines at least one service frequency band included in the wireless resource allocation information. Accordingly, the method and apparatus dynamically allocate wireless resources to a terminal when multiple systems having backward compatibility coexist. | 08-28-2008 |
| 20080205369 | APPARATUS AND METHOD FOR POWER DISTRIBUTION BY FREQUENCY ALLOCATION IN MULTI-FREQUENCY ALLOCATION BROADBAND WIRELESS COMMUNICATION SYSTEM - An apparatus and method for power distribution by Frequency Allocation (FA) in a multi-band broadband wireless communication system are provided. The method includes detecting at least one of a loading value and a performance efficiency value by band, calculating a power distribution value by band using the detected value and calculating a power value by band using the calculated band power distribution value. The method and apparatus provide a scheme that can vary a power distribution of each band according to need and cope with subscriber capacity more flexibly when a plurality of diverse systems coexist. | 08-28-2008 |
| 20080220793 | Apparatus and method for allocating resource in wireless communication system - Provided is an apparatus and method for allocating resources in a wireless communication system. In method, whether there are one or more mobile stations periodically transmitting or receiving data of the same size, among mobile station to be provided with a service is determined if a predetermined region of a frame is set as a fixed region to be allocated to mobile stations that periodically transmit or receive data of the same size. The channel states of the mobile stations are detected if there are mobile stations periodically transmitting or receiving data of the same size. Resources of the fixed region are allocated according to the channel states of the mobile stations. The resource allocation information is transmitted to the mobile stations. | 09-11-2008 |
| 20080220804 | SYSTEM AND METHOD FOR CONTROLLING POWER IN A COMMUNICATION SYSTEM - A method for controlling power in a communication system. A base station allocates Channel Quality Information Channels (CQICHs) to at least one mobile station, transmits CQICH information for the allocated CQICHs, and transmits power control information to the mobile stations to which the CQICHs are allocated. A mobile station receives CQICH allocation information, receives power control information, and detects the power control information allocated to the mobile station by using the CQICH allocation information. | 09-11-2008 |
| 20080227476 | SYSTEM AND METHOD FOR CONTROLLING POWER IN A COMMUNICATION SYSTEM - A method for controlling power in a communication system. A base station allocats Channel Quality Information Channels to at least one mobile station, transmits the allocated Channel Quality Information Channel information, and transmits power control information to the mobile station to which the Channel Quality Information Channel is allocated. And a mobile station for receives Channel Quality Information Channel allocation information, receives power control information, and detects the power control information allocated to the mobile station by using the Channel Quality Information Channel allocation information. | 09-18-2008 |
| 20090005105 | APPARATUS AND METHOD FOR SETTING TRANSMIT POWER OF A COMPACT BASE STATION IN A WIRELESS COMMUNICATION SYSTEM - An apparatus and method for setting transmit power of a compact Base Station (BS) in a wireless communication system are provided. In the apparatus and method a measurer measures a signal strength corresponding to each of one or more neighbor BSs while operating in a Mobile Station (MS) mode, a receiver receives a signal strength corresponding to each of the one or more neighbor BSs measured by one or more MSs from the corresponding one or more MSs, and a self-configuration controller sets a target signal strength based on the signal strength corresponding to each of the one or more neighbor BSs measured in the MS mode and controls a transmit power so that the signal strength corresponding to each of the one or more neighbor BSs measured by the one or more MSs substantially reaches the target signal strength. | 01-01-2009 |
| 20090068961 | Apparatus and method for operating feedback channels in a wireless communication system - An apparatus and a method for allocating feedback channels in a wireless communication system are provided. The method includes determining a number of common feedback channels to be allocated commonly to one or more terminals using a capacity loss according to the feedback channel allocation; and generating feedback channel change information to change the number of the common feedback channels per terminal. | 03-12-2009 |
| 20090111376 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING DATA IN A COMMUNICATION SYSTEM - An apparatus and method for transmitting and receiving data in a communication system are provided. In the method, a BS selects a repeater group from among a plurality of repeater groups, for use in transmitting first data to an MS and transmits the first data to the MS according to the number of repeaters of the selected repeater group. The first data is different from data transmitted by the repeaters of the selected repeater group. | 04-30-2009 |
| 20090113273 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING DATA RESTORATION INFORMATION IN A COMMUNICATION SYSTEM - An apparatus and method for transmitting data restoration information in a communication system are provided, in which a BS transmits first data in a first zone of a frame, transmits second data in a second zone of the frame, transmits first data restoration information for restoring the first data in the first zone, and transmits second data restoration information for restoring the second data in the second zone. The first data comprises the same data as data transmitted simultaneously by at least one repeater and the second data comprises data that is different from data transmitted by the at least one repeater. | 04-30-2009 |
| 20090135779 | APPARATUS AND METHOD FOR CIRCUIT MODE RESOURCE ALLOCATION IN A BROADBAND WIRELESS COMMUNICATION SYSTEM - A broadband wireless communication system using a fixed allocation scheme is provided. The system includes a controller for configuring change report information to report occurrences of resource release or change when resources are released or changed in a fixed allocation region, a generator for generating a fixed allocation Information Element (IE) including the change report information and history information regarding the resource release or change, and a transmitter for transmitting the fixed allocation IE. | 05-28-2009 |
| 20090168911 | APPARATUS AND METHOD FOR CHANNEL INFORMATION FEEDBACK IN MULTIPLE ANTENNA SYSTEM - An apparatus and method for channel information feedback in a multiple antenna system are provided. The method includes selecting at least one code for at least one Eigen vector based on channel information with a serving node from a codebook including at least one code, constructing a set of codes orthogonal to a first code including the at least one selected code, and indicating the first code using an amount of information that enables expression of the codes of the codebook, indicating codes, other than the first code, in the constructed set using an amount of information that enables expression of the codes included in the set and performing feedback to the serving node. | 07-02-2009 |
| 20090190687 | METHOD AND APPARATUS FOR ALLOCATING FEEDBACK CHANNEL IN MULTIPLE ANTENNA COMMUNICATION SYSTEM - A method and apparatus for allocating a feedback channel in a multiple antenna communication system are provided. In a method of operating a Base Station (BS) for allocating a feedback channel in a Multi-User Multiple-Input Multiple-Output (MU-MIMO) communication system, the method includes measuring a MIMO transmission environment, determining an amount of feedback according to the MIMO transmission environment, and allocating a feedback channel according to an amount of the feedback. | 07-30-2009 |
| 20090207887 | APPARATUS AND METHOD FOR TRANSMITTING FEEDBACK INFORMATION IN BROADBAND WIRELESS ACCESS SYSTEM - An apparatus and method for transmitting feedback information are provided. In a method of operating a transmitter for transmitting feedback information in a broadband wireless access system, the method includes estimating a channel of a second path on the basis of information of a received downlink frame, obtaining a channel representative value corresponding to the estimated channel of the second path, modulating the channel representative value by spreading the channel representative value to a sounding symbol to be transmitted, and transmitting the modulated sounding symbol through a first path. | 08-20-2009 |
| 20090239565 | APPARATUS AND METHOD FOR UPLINK BEAMFORMING AND SPACE-DIVISION MULTIPLE ACCESS (SDMA) IN MULTIPLE INPUT MULTIPLE OUTPUT (MIMO) WIRELESS COMMUNICATION SYSTEMS - An apparatus and method for beamforming of a terminal in a Multiple Input Multiple Output (MIMO) wireless communication system are provided. The method includes transmitting sounding signals beamformed through a plurality of beamforming weight vectors in sequence, receiving control information indicative of an uplink weight vector determined by a base station and a maximum channel quality value using the sounding signals and transmitting a transmit signal beamformed with the uplink weight vector via a plurality of antennas. | 09-24-2009 |
| 20090274227 | APPARATUSES AND METHODS FOR TRANSMISSION AND RECEPTION IN A CODEBOOK BASED CLOSED-LOOP (CL)-MULTIPLE INPUT MULTIPLE OUTPUT (MIMO) SYSTEM - Apparatuses and methods for transmission and reception in a Closed-Loop (CL)-Multiple Input Multiple Output (MIMO) system are provided. A codebook generation method includes determining weight vectors v | 11-05-2009 |
| 20100020674 | Apparatus and method for synchronization acquisition and cell ID search in wireless communication system - A apparatus and method for allocating synchronization acquisition sequence in a time domain and allocating a cell ID search sequence in a frequency domain. In a method for transmitting a synchronization signal of a base station in a wireless communication system, a binary frequency-domain preamble sequence predetermined for cell ID search and a binary time-domain preamble sequence predetermined for synchronization acquisition are used to determine a complex time-domain preamble sequence except the binary time-domain preamble sequence among the time-domain preamble sequences that are generated according to an Inverse Fast Fourier Transform (IFFT) operation on the binary frequency-domain preamble sequence. The complex time-domain preamble sequence and the binary time-domain preamble sequence are transmitted to a mobile station. | 01-28-2010 |
| 20100061314 | METHOD AND APPARATUS FOR ALLOCATING RESOURCES IN A WIRELESS COMMUNICATION SYSTEM AND SYSTEM THEREOF - A method and apparatus for allocating resources in a wireless communication system is provided. A Base Station (BS) allocates persistent resources in a Hybrid Automatic Repeat Request (HARQ) region to a Mobile Station (MS), changes a location of the HARQ region, changes location of persistent resources in the HARQ region to location of persistent resources in a new HARQ region, and allocates the persistent resource to the MS. The new HARQ region is the location-changed HARQ region. | 03-11-2010 |
| 20100182898 | Apparatus and method for transmitting and receiving uplink sounding signal in broadband wireless communication system - A terminal is capable of transmitting an orthogonal sequence in a broadband wireless communication system. Operations of a transmitting end include generating a sequence corresponding to sequence allocation information of the transmitting end among a plurality of candidate sequences; generating a signal string corresponding to the sequence; and transmitting the signal string over a channel defined for transmission of the signal string. | 07-22-2010 |
| 20100246526 | Apparatus and method for allocating sounding sequences in a broadband wireless communication system - A method and apparatus enhances sounding performance for a broadband wireless communication system of a multi-cell environment. A grouping part groups a plurality of sounding sequences to a plurality of sequence groups. A first determiner determines a correlation between the sequence groups. A second determiner determines a least interference relation between sectors in a cluster. An allocator allocates the sequence groups to the sectors based on the correlation between the sequence groups and the least interference relation between the sectors. | 09-30-2010 |
