摘要:
The present invention relates to a method and device for monitoring a control channel in a wireless communication system. A terminal receives a UE-specific reference signal (URS) from at least one extended subframe, and monitors a control channel in an extended control channel region of the at least one extended subframe. The control channel is demodulated using the URS.
摘要:
Provided are a method and an apparatus for communication in a TDD (Time Division Duplex) system. A terminal is notified of a change in a first UL-DL setup from a base station during a first change period and receives a second UL-DL setup updated during a second change period. The terminal refreshes a buffer for an ongoing HARQ (Hybrid Automatic Repeat reQuest) process on the basis of the first UL-DL setup according to the reception of the second UL-DL setup.
摘要:
The present invention is directed to a wireless communication system. In particular, the present invention is directed to a method of processing a control channel at a user equipment in a wireless communication system using multiple carriers, the method comprising: receiving a plurality of search spaces, wherein each search space comprises a plurality of control channel candidates and each search space is corresponding to respective carrier; and monitoring the control channel candidates for the control channel, wherein if the control channel candidates have a common information size over two or more search spaces, the control channel can be received via any one of the two or more the search spaces, and an apparatus therefore.
摘要:
Provided is a method for transmitting ACK/NACK (acknowledgement/not-acknowledgement) of a terminal having a plurality of configured serving cells in a wireless communication system, which operates by means of TDD (time division duplex). The method comprises the following steps: setting the plurality of serving cells; receiving a codeword from at least one serving cell from the set plurality of service cells; and transmitting reception acknowledgement information which expresses reception confirmation of the code word, wherein when the terminal receives the code word through a first serving cell only from the set plurality of serving cells, the reception acknowledgement information is transmitted according to a first transmission method, wherein the first transmission method is a method for transmitting the ACK/NACK when the terminal is set with only one serving cell.
摘要:
According to one embodiment, a scheduling method of a base station (BS) in a carrier aggregation system includes: transmitting uplink-downlink (UL-DL) configuration information on a time division duplex (TDD) frame used in a second serving cell through a first serving cell; and communicating with a user equipment (UE) through a subframe of the second serving cell configured by the UL-DL configuration information, wherein the first serving cell and the second serving cell are serving cells allocated to the UE.
摘要:
A method and an apparatus for transmitting uplink control information (UCI), performed by a user equipment, in a wireless communication system are provided. The method comprising: generating encoded information bits by performing channel coding on information bits of the UCI; generating a modulation symbol sequence by modulating the encoded information bits; generating a spread sequence by block-wise spreading on the modulation symbol sequences with an orthogonal sequence; and transmitting the spread sequence to a base station through an uplink control channel, wherein the information bits of the UCI comprises a first UCI bit sequence and a second UCI information bit.
摘要:
Provided is a method for transmitting a HARQ (hybrid automatic repeat request) ACK (acknowledgment)/NACK (not-acknowledgement) response from user equipment in which two serving cells are set. The method comprises the steps of: receiving a first transport block through a first serving cell which is set in a first transmission mode, in which up to two transport blocks are supported; determining an HARQ ACK/NACK response which includes a first response to the first transport block; and transmitting the HARQ ACK/NACK response, wherein the first response is the same as a response used when two transport blocks have been received through the first serving cell.
摘要:
The present invention relates to a method for transmitting channel state information of a terminal in a multi-carrier system, and to a terminal using the method. The method comprises the steps of: receiving reference signals from a base station via a plurality of downlink component carriers; measuring a channel state for each of the plurality of downlink component carriers using the reference signals included in the plurality of downlink component carriers; generating channel state information on a portion of the plurality of downlink component carriers; and transmitting to the base station the channel state information on a portion of the plurality of downlink component carriers and/or an index which indicates the portion of the plurality of downlink component carriers.
摘要:
The present invention is directed to a wireless communication system. More specifically, the present invention is directed to a method and an apparatus of controlling uplink transmission at a user equipment in a wireless communication system, wherein the user equipment is connected to multiple component carriers, which includes receiving configuration information for transmitting an uplink signal from a base station; and identifying a time for transmitting the uplink signal to the base station on a corresponding uplink component carrier in use of the configuration information, wherein if the corresponding uplink component carrier is in a non-available state at the time for transmitting the uplink signal, the uplink signal is not transmitted.
摘要:
The present invention provides a method and apparatus for transmitting UCI (uplink control information) by user equipment in a carrier aggregation system. According to the method, the user equipment transmits UCI through a PUSCH (physical uplink shared channel) of a primary cell in a subframe that has PUSCH transmission of the primary cell; and if the subframe that does not have the PUSCH transmission of the primary cell has PUSCH transmission of at least one secondary cell, the user equipment transmits the UCI through the PUSCH of one of the at least one secondary cell. In this case, more than one serving cell is set up in the user equipment; simultaneous transmission of PUSCH and PUCCH (physical uplink control channel), with PUSCH being a data channel and PUCCH being a control channel, is not set up in the serving cells; and each of the serving cells includes the primary cell and the at least one secondary cell.