摘要:
A method and device deactivate carrier aggregation and execute single carrier operation in a terminal, in a wireless communication system in which broadband is achieved by means of carrier aggregation. More specifically, in a terminal which is running a plurality of carriers, unnecessary power consumption in the terminal is prevented and additional screening events are minimized by defining physical layer signaling so as to make the terminal rapidly convert to running a single carrier.
摘要:
A method and apparatus for receiving control information in a mobile communication system. A controller acquires information indicating variable Control Channel Elements (CCEs) allocated for first User Equipments (UEs) among CCEs constituting control channels, acquires information indicating fixed CCEs allocated for second UEs, selects the variable CCEs when a UE receiving the control information is included in the first UEs, and selects the fixed CCEs when the UE is included in the second UEs. A control information receiver receives the control information through the selected CCEs.
摘要:
Methods and apparatus for receiving/transmitting an Acknowledgement (ACK)/Negative Acknowledgement (NACK) signal in a wireless communication system are provided. User data and a pilot are transmitted via an uplink channel. An ACK/NACK resource is identified based on a resource index of the transmitted user data. The ACK/NACK signal corresponding to the transmitted user data is received using the ACK/NACK resource.
摘要:
An apparatus and method are provided for feeding back channel quality information and performing scheduling using the fed-back channel quality information in a wireless communication system based on Orthogonal Frequency Division Multiple Access (OFDMA). In the OFDMA wireless communication system, forward performance degradation due to a decrease in an amount of reverse channel quality information is reduced, and also an increase in the reverse load due to channel quality information feedback is suppressed. A base station controls power of a physical channel using information fed back from a mobile station. In a method for feeding back channel quality information from the mobile station, sub-band-by-sub-band channel quality information is measured and channel-by-channel quality information of a number of channels is transmitted in order of sub-bands of better channel quality information. Average channel quality information for a total band is measured and transmitted.
摘要:
A method for allocating resources in a wireless communication system using Frequency Division Multiple Access (FDMA). The method includes dividing entire frequency resources into sub-bands each having a number of sub-channels, setting at least one sub-channel in each of the sub-bands as a wide-band resource, and providing the sub-band and wide-band information to mobile stations; and determining one of the sub-band resource and the wide-band resource as an allocated resource according to channel condition with a particular mobile station when there is a need for communication with the mobile station.
摘要:
An apparatus and method are provided for mapping control information to a multiple antenna array to transmit the control information in a mobile communication system. The method includes spreading the control information with an orthogonal sequence according to a spreading factor; and mapping the spread control information to the multiple antenna array based on a repetition index and a Physical Hybrid Automatic Repeat reQuest (HARQ) Indicator CHannel (PHICH) group index. The spread control information is mapped to the multiple antenna array in an alternating pattern in accordance with the repetition index.
摘要:
Methods and apparatus are provided for transmitting and receiving data in a communication system with a plurality of antennas. Data and a first pilot are generated. The first pilot is transmitted at a first position in a frequency domain that corresponds to a position of the generated data in the frequency domain and at a first position in a time domain that is with the generated data, in every transmission time interval of the data. A second pilot is generated. The second pilot is transmitted at predetermined second positions in the time domain and the frequency domain, in a transmission time interval that is predefined by a transmitter and a receiver.
摘要:
Provided is a method for configuring and managing a channel in a wireless communication system that divides a full frequency band into a plurality of sub-bands. The method comprises selecting at least one sub-band from the plurality of sub-bands and allocating each of a plurality of Adaptive Modulation and Coding (AMC) channels using the selected at least one sub-band; puncturing sub-carriers of at least one of the plurality of AMC channels according to a predetermined pattern; and allocating a diversity channel using the punctured sub-carriers.
摘要:
A method and device deactivate carrier aggregation and execute single carrier operation in a terminal, in a wireless communication system in which broadband is achieved by means of carrier aggregation. More specifically, in a terminal which is running a plurality of carriers, unnecessary power consumption in the terminal is prevented and additional screening events are minimized by defining physical layer signaling so as to make the terminal rapidly convert to running a single carrier.
摘要:
A method for transmitting feedback information in a mobile communication system using Multiple Input Multiple Output (MIMO) is provided. The method includes, when knockdown precoding is used and Antenna Selection precoding is used, setting an index field for indicating a universal matrix of a precoding matrix of a first reverse feedback channel to a value indicating whether Antenna Selection Space Time Transmit Diversity (STTD) is present; when the knockdown precoding is used and the Antenna Selection precoding is used, writing antenna selection information in a vector bitmap field of the first reverse feedback channel; and when the knockdown precoding is used and the Antenna Selection precoding is used, estimating Channel Quality Information (CQI) according to the antenna selection information and writing the estimated CQI in a CQI field of a second reverse feedback channel.