摘要:
The present invention relates to a wireless communication system. In particular, the present invention relates to a method for handling physical downlink control channels (PDCCHs) in a user equipment, the method comprising: receiving a plurality of control channel elements (CCEs) from a base station; performing blind decoding of the plurality of CCEs in CCE aggregation units; and identifying a CCE aggregation level used for the PDCCH transmission, on the basis of the blinding decoding result, wherein the CCE aggregation level is relevant resource mapping of the control information included in the PDCCH.
摘要:
A method for allocating uplink and downlink physical channels to improve throughput of a wireless access system is disclosed. A method for allocating channels to optimize a wireless access system which supports radio frequencies comprises configuring one or more physical channels in a transmitter; allocating first physical channels to a receiver considering features of the one or more physical channels; and transmitting one or more control channels to the receiver through a predetermined physical channel of the first physical channels, the control channels including configuration information of the first physical channels allocated to the receiver.
摘要:
A method and apparatus for providing information indicating radio resources for multi-cell interference measurement at a BS so that a UE can more accurately measure interference are disclosed.
摘要:
A method and device for transmitting a reference signal in a wireless communication system is provided. A base station maps each demodulation reference signal (DMRS) of each of a plurality of layers into a first resource element (RE) set and a second RE set including four REs over four orthogonal frequency division multiplexing (OFDM) symbols within a subframe, allocates first orthogonal cover codes (OCCs) having a length of 4 to each DMRS mapped into the first RE set, allocates second OCCs having a length of 4 to each DMRS mapped into the second resource element set and transmits each DMRS mapped into the first RE set and the second RE set. The subframe includes two slots and each slot includes six OFDM symbols. The second OCC are formed by swapping positions of bits that constitute the first OCCs.
摘要:
A method and an apparatus for transmitting a reference signal in a multiple antenna system are provided. The method includes transmitting a first reference signal based on a first sequence through a first antenna group, and transmitting a second reference signal based on a second sequence through a second antenna group, wherein the first reference signal and the second reference signal are transmitted through a same radio resource.
摘要:
Provided are a method and apparatus for transmitting reference signals in a wireless communication system. A first set of reference signals and a second set of reference signals are generated and mapped to a first resource block (RB) in accordance with a first reference signal pattern and a second RB which is close to the first RB in accordance with a second reference signal pattern. The first RB and the second RB are transmitted from a base station to user equipment. Each of the first reference signal pattern and the second reference signal pattern is formed of one sub-frame and on RB unit. In addition, resource elements (Rs) to which the first set of reference signals and the second set of reference signals are respectively mapped in accordance with the second reference signal pattern are REs to which the second set of reference signals and the first set of reference signals are respectively mapped in accordance with the first reference signal pattern.
摘要:
Disclosed is a method for transmitting a CoMP reference signal for accurate channel estimation. The CoMP reference signal is a cell-specific reference signal or a CoMP-zone-specific reference signal. A method for transmitting the cell-specific reference signal uses a CoMP set ID or does not apply a frequency shift value, or uses a serving cell ID or a frequency shift value of the serving cell. The cell-specific reference signal is transmitted using a preset resource region. A method for transmitting the CoMP-zone-specific reference signal is configured such that the pattern of the sequence of CoMP reference signals varies in each of the CoMP zones, and the pattern can be set in advance. The reference signal is multiplexed using an orthogonal code and transmitted to plural terminals using the same CoMP zone.
摘要:
A method for transmitting reference signals for eight or fewer antenna ports includes mapping a portion of common reference signals (CRSs) for four or fewer antenna ports into a downlink subframe including 1st slot and 2nd slot with a normal cyclic prefix configuration; mapping channel status information reference signals (CSI-RSs) for eight or fewer antenna ports into the downlink subframe according to a preset pattern; and transmitting the downlink subframe into which the CRSs and the CSI-RSs are mapped, wherein the preset pattern defines the CSI-RSs for eight or fewer antenna ports to be mapped onto two OFDM symbols of the data region in the downlink subframe, with the two OFDM symbols being spaced apart by one OFDM symbol, and wherein the portion of the CRSs for four or fewer antenna ports is limited to the CRSs for two or fewer antenna ports.
摘要:
Provided are a method and apparatus for transmitting a reference signal in a multi-antenna system. A terminal generates a plurality of reference signal sequences in which cyclic shift values different from each other are allocated to the respective plurality of layers, and generates a single carrier-frequency division multiple access (SC-FDMA) symbol to which the plurality of reference signal sequences are mapped. The SC-FDMA symbol is transmitted to a base station via a plurality of antennas. The cyclic shift values allocated to the respective layers are determined on the basis of a first cyclic shift value, which is a cyclic shift value allocated to a first layer from among the plurality of layers, and cyclic shift offsets which are allocated to the respective layers and which are different from each other.
摘要:
The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for transmitting control information through a PUCCH in a wireless system and to a device therefore.