摘要:
A method for transmitting downlink data using resource blocks at a base station in a wireless mobile communication system includes transmitting downlink data mapped to physical resource blocks (PRBs) to a user equipment, wherein indexes of virtual resource blocks (VRBs) are mapped to indexes of the PRBs for a first slot and a second slot of a subframe, and the indexes of the PRBs for the second slot are shifted with respect to the indexes of the PRBs for the first slot based on a predetermined gap, and wherein a predetermined offset is applied to an index of a PRB when the index of the PRB is equal to or greater than a predetermined threshold.
摘要:
A method and apparatus of controlling transmit power in a wireless communication system is provided. A wireless apparatus selects one transmit mode among a plurality of transmit modes, and determines the transmit power on the basis of the selected transmit mode. The wireless apparatus transmits an uplink channel by using the transmit power.
摘要:
In a system having a plurality of cells participating in a Coordinated Multi-Point (CoMP) operation, a method for transmitting Reference Signals (RSs) to User Equipment (UE) includes generating, by Base Station (BS) included in each of the plurality of cells, a subframe including RSs for a UE located in the each of the plurality of cells, and transmitting the generated subframe to the UE by the BS. The RSs include RSs for channel measurement, and RSs for data demodulation, the plurality of cells are grouped according to frequency shift values applied to the RSs for channel measurement and RS allocation patterns are determined for two cells among the plurality of cells according to a predetermined rule.
摘要:
A packet data transmitting method and mobile communication system using the same enables transmission of common ACK/NACK information from each sector of a base station to a user entity in softer handover. The method includes receiving via at least one of the plurality of sectors a data packet from the mobile terminal, the data packet being correspondingly received for each of the at least one of the plurality of sectors; combining the correspondingly received data packets, to obtain a signal having a highest signal-to-noise ratio; decoding the value obtained by the combining; determining a transmission status of the data packet according to the decoding; and transmitting to the mobile terminal a common ACK/NACK signal including one of a common ACK signal and a common NACK signal according to the determining, the common ACK/NACK signal being transmitted via each of the at least one sector.
摘要:
A method for transmitting information of resources for use in transmission of ACK/NACK signals in a mobile communication system is disclosed. An example method for receiving ACK/NACK signals in a mobile communication system is also disclosed. When resources for transmission of data and resources for transmission of control information of the data are scheduled through virtual unit resources, the method identifies information of resources for receiving an ACK/NACK signal for transmission data mapped to information of at least one of a virtual unit resource allocated to the transmission data and a virtual unit resource allocated to control information of the transmission data, and receives the ACK/NACK signal for the transmission data through the information of resources for receiving the ACK/NACK signal.
摘要:
A base station includes a receiver receiving feedback information including a preferred weight determined by a user equipment (UE); a processor multiplying a weight and data to be transmitted; a transmitter including two antennas and transmitting the weight multiplied data to the UE through a specific physical downlink shared channel where a MIMO transmission scheme for a HS-DSCH (High Speed Downlink Shared Channel) is applied, the transmitter transmitting feed-forward information through a downlink shared control channel when the data is transmitted using the MIMO transmission scheme for the HS-DSCH, wherein the weight applied to the specific physical downlink shared channel is adjusted at a subframe boundary of the specific physical downlink shared channel and the feed-forward information is transmitted through a subframe of the downlink shared control channel corresponding to the specific subframe of the specific physical downlink shared channel.
摘要:
A method for efficiently scheduling virtual resource blocks to physical resource blocks is disclosed. In a wireless mobile communication system that supports a resource block group (RBG) allocation scheme, for distributed mapping of consecutively allocated virtual resource blocks to physical resource blocks, there is proposed a mapping method capable of increasing the number of distributed virtual resource blocks to a maximum while satisfying gap limitations, when the length of the physical resource blocks is different from the length of the distributed virtual resource blocks. Also, the number of distributed virtual resource blocks and the structure of an interleaver are limited for efficient scheduling.
摘要:
A method for receiving signals in a multi-carrier multiple access system is provided. The method includes receiving signals from at least one base station wherein each signal has a base station identifier, processing the signals to identify each base station by using the base station identifier, performing a channel estimation using the processed signals, combining the processed signals using information obtained from the channel estimation and decoding the combined signals. Also, an apparatus for receiving signals in a multi-carrier multiple access system includes a serial-to-parallel converter for converting a serial signal including a base station identifier from at least one base station to parallel signals, a Fast Fourier transformer for transforming the parallel signals, a parallel-to-serial converter for converting the parallel signals to a serial signal, a despreading processor for despreading frequency domain signals using the base station identifier from at least one base station, a channel estimator for compensating a channel variation between the at least one base station and a mobile station, a signal combiner for combining signals from base stations and a decoder for decoding the combined signal.