摘要:
A method for transmitting signals to reduce feedback overhead and a method for transmitting feedback information for the same are described. In transmitting signals through precoding, different codebook subsets are used in an open-loop transmission mode and a closed-loop transmission mode, thereby reducing feedback overhead. In this case, it is assumed that the codebook subsets for the respective transmission modes are optimized according to each transmission mode.
摘要:
The present invention relates to a wireless communication system. More specifically, the present invention relates to a method for transmitting control signal via a PUCCH in a wireless communication system, and to an apparatus for the method, wherein the method comprises the following steps: joint-coding a plurality of pieces of control information to obtain a single codeword; obtaining a first modulation symbol sequence from the single codeword; obtaining, from the first modulation symbol sequence, a plurality of second modulation symbol sequences corresponding to each slot in the PUCCH; cyclically shifting the plurality of second modulation symbol sequences in a time domain to obtain a plurality of third modulation symbol sequences; performing a discrete Fourier transform (DFT) precoding process on the plurality of third modulation symbol sequences to obtain a plurality of complex symbol sequences in a frequency domain; and transmitting the plurality of complex symbol sequences via the PUCCH.
摘要:
A method and apparatus for transmitting uplink control information in a wireless communication system is disclosed. A method for transmitting uplink control information in a mobile station of a wireless communication system includes performing reverse repetition coding with respect to first uplink control information, and performing joint coding with respect to the reverse repetition coded first uplink control information and second uplink control information. The first uplink control information has higher priority than the second uplink control information.
摘要:
A method for transmitting a multiple codeword (MCW) in a Multiple Input Multiple Output (MIMO) communication system is disclosed. A method for transmitting a multiple codeword (MCW) in a Multiple-Input Multiple-Output (MIMO) communication system includes performing a channel coding and modulation process for each codeword of the multiple codeword (MCW), multiplying the channel-coded-modulated result by a rotation matrix decided by either a spatial multiplexing rate or a layer (R), and performing a codeword permutation (CP) on the multiple codeword (MCW), performing a MIMO encoding on the multiple codeword (MCW), and transmitting the multiple codeword (MCW) via a multi-antenna.
摘要:
Methods of allocating data to a plurality of subcarriers in a wireless communication system are disclosed. More specifically, one of the methods includes receiving feedback information from a receiver, calculating a level of mobility of the receiver using the feedback information, determining a resource allocation scheme to use based on the calculated level of mobility, and allocating the data to the plurality of subcarriers based on the determined resource allocation scheme.
摘要:
The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for transmitting a signal via physical uplink control channel (PUCCH) in a wireless communication system, and to an apparatus for the method, wherein the method is configured such that a terminal transmits a signal via the PUCCH and multiple antennas, and comprises the following steps: obtaining a first modulated symbol sequence from control information; performing a spreading process on modulated symbols corresponding to each of the slots in the PUCCH from among the first modulated symbol sequence, such that the modulated symbols corresponding to the respective single carrier frequency division multiplexing (SC-FDMA) symbols in the relevant slot, so as to obtain a plurality of spread second modulated symbol sequences corresponding to the respective SC-FDMA symbols in each slot; and transmitting, in the relevant SC-FDMA symbols in the PUCCH, the plurality of spread second modulated symbol sequences via multiple antennas, wherein resources used in the transmission via the PUCCH are orthogonal to one another between antenna ports.
摘要:
Disclosed are a base station apparatus and a repeater apparatus for transceiving signals in a wireless communication system. The repeater apparatus comprises: a receiver which receives a signal from a base station through a first region of a first downlink subframe in a component carrier that supports first and second wireless communication schemes; and a transmitter which transmits, through a second region of the first downlink subframe, a signal to one or more terminals of one or more first type of terminals which use the first wireless communication scheme and one or more second type of terminals which use the second wireless communication scheme, simultaneously with said reception of the signal. Here, the first region and the second region are multiplexed in the first downlink subframe in accordance with a frequency division multiplexing (FDM) scheme.
摘要:
A base station in a wireless communication system transmits a CSI-RS of a cell every 1×N subframes or 1×N ms with muting CSI-RS REs of a neighboring cell every m×N subframes. A BS can estimate channel state of the neighboring cell with higher accuracy by using a CSI-RS of the neighboring cell received in the muted REs.
摘要:
The present invention relates to a method in which a terminal transmits a sounding reference signal in a wireless communication system. Specifically, the method includes: receiving sounding reference signal setting information from a base station; and transmitting the sound reference signal to the base station on the basis of the sounding reference signal setting information, wherein an upstream link signal based on the sounding reference signal is transmitted over an upstream link control channel, and a frequency band corresponding to an upstream link data channel and a frequency band corresponding to an upstream link control channel are allocated as frequency resources for the sounding reference signal.
摘要:
A method and apparatus for requesting uplink resources in a wireless communication system is provided. A user equipment determines whether a scheduling request for requesting uplink resources is triggered. If the scheduling request is triggered, the user equipment transmits a first set of frequency domain sequences and a second set of frequency domain sequences in a subframe.