摘要:
A method is provided for recognizing the frequency bandwidth of a base station in a mobile communication system with frequency bandwidth scalability where the transmission frequency bands of base stations and mobile stations having different frequency bandwidths are overlaid with one another. The base stations transmit to a mobile station first information, including information about their frequency bandwidths at the same frequency position over a minimum frequency bandwidth with the same center frequency. The mobile station recognizes the presence of the base stations by comparing the first information from the base stations and detects the frequency bandwidth information in the first information.
摘要:
A system and method for performing handover in a wireless mobile communication system are provided. In a Mobile Station, MS, -initiated scanning method of an MS in a wireless mobile communication system having at least two frequency bands with different central frequencies, the MS receives from a serving Base Station, BS, a mobile neighbor advertisement message including information about available radio resources of the neighbor BSs, transmits a new scanning request message to the serving BS, if the MS determines to measure Carrier-to-Interference and Noise Ratios, CINRs, of pilot signals from the serving BS and the neighbor BS, receives from the serving BS a response message for the scanning request message, including information about a BS which has reserved radio resources for a predetermined one of the at least two frequency bands, and measures the CINRs of the pilot signals in the predetermined frequency band.
摘要:
A terminal and a communication method thereof, a base station controller and a control method thereof, and a wireless communication system and a method thereof are provided. The wireless communication system includes a terminal, a controller, and at least one base station. The terminal (200) has an array antenna and searches for neighbor base stations (100). The controller (300) determines an active set for multi-cooperative transmission/reception with respect to the terminal among searched neighbor base stations, and schedules beam transmission of each base station included in the determined active set. The at least one base station performs transmission/reception with the terminal using beam-forming in an ultra high frequency band, and provides resource information regarding uplink/downlink of each base station included in the active set to the terminal based on the scheduling by the controller.
摘要:
A terminal and a communication method thereof, a base station controller and a control method thereof, and a wireless communication system and a method thereof are provided. The wireless communication system includes a terminal, a controller, and at least one base station. The terminal (200) has an array antenna and searches for neighbor base stations (100). The controller (300) determines an active set for multi-cooperative transmission/reception with respect to the terminal among searched neighbor base stations, and schedules beam transmission of each base station included in the determined active set. The at least one base station performs transmission/reception with the terminal using beam-forming in an ultra high frequency band, and provides resource information regarding uplink/downlink of each base station included in the active set to the terminal based on the scheduling by the controller.
摘要:
A method for allocating a sub-channel in a wireless communication system is disclosed. The method includes measuring a moving velocity of each of mobile stations (MSs); selecting MSs to which a sub-channel is to be allocated; determining a resource allocation period for sub-channel allocation to the MSs using the measured moving velocity; calculating an average amount of data to be transmitted for the determined resource allocation period, and sending a channel quality information (CQI) request to the MSs; upon receipt of CQI in response to the CQI request, allocating a sub-channel satisfying the average data amount taking the CQI into account; and transmitting a control signal for the sub-channel allocation to the MSs.
摘要:
A method and apparatus for transmitting and receiving a signal in a wireless communication system. The wireless communication system includes a transmitter with at least four transmit antennas and a receiver with at least one receive antenna. Space Frequency Block Coding (SFBC) processes are performed for input signals on a basis of two antenna pairs. Signal blocks whose number corresponds to the number of transmit antennas are output. A Space Time Block Coding (STBC) process is performed for the signal blocks generated according to the antenna pairs. Signals carried by single carriers are transmitted through the at least four transmit antennas mapped to the signal blocks.
摘要:
A method and apparatus for transmitting data in a communication system. In the apparatus, a repeater repeatedly processes an input signal a predetermined number of times. A Space-Frequency Block-Coded (SFBC) encoder performs SFBC coding on the repeatedly processed input signals, and outputs at least two signal blocks in parallel. A cyclic prefix (CP) inserter inserts a CP in the signal blocks and transmits the CP-inserted signal blocks via associated transmission antennas using a single carrier.
摘要:
A method and apparatus for transmitting data in a communication system. In the apparatus, a repeater repeatedly processes an input signal a predetermined number of times. A Space-Frequency Block-Coded (SFBC) encoder performs SFBC coding on the repeatedly processed input signals, and outputs at least two signal blocks in parallel. A cyclic prefix (CP) inserter inserts a CP in the signal blocks and transmits the CP-inserted signal blocks via associated transmission antennas using a single carrier.