摘要:
A method and apparatus of transmitting an ACK/NACK signal for a hybrid automatic repeat request (HARQ) in a wireless communication system is provided. A first ACK/NACK resource index and a second ACK/NACK resource index based on resources used to transmit a downlink control channel is determined. An ACK/NACK signal for a downlink transport block is transmitted through a plurality of antennas using first ACK/NACK resources obtained from the first ACK/NACK resource index and second ACK/NACK resources obtained from the second ACK/NACK resource index. An HARQ ACK/NACK signal can be reliably transmitted through a plurality of antennas.
摘要:
A method of transmitting a sounding reference signal from a user equipment to a base station in a wireless communication system using a plurality of component carriers is disclosed. The present invention includes the steps of checking offset values of a plurality of the component carriers corresponding to a subframe having the sounding reference signal applied thereto from the base station and if the sounding reference signal is transmitted using a certain component carrier of a plurality of the component carriers, transmitting the sounding reference signal to the base station using the certain component carrier in a sub-frame corresponding to the offset value of the certain component carrier. Preferably, the present invention further includes the step of if the sounding reference signals are transmitted using at least two component carriers in the same subframe, transmitting the sounding reference signal having a longest transmission periodicity among the sounding reference signals only.
摘要:
The present invention relates to a wireless communication system. More particularly, the present invention relates to a signal transmission method in which a terminal transmits a signal in a wireless communication system, said method comprising the steps of: checking the maximum transmission power (P_CC_MAX) for each component carrier of a plurality of component carriers, as well as the maximum transmission power (P_UE_MAX) of the terminal; calculating the transmission power for each channel to be simultaneously transmitted to a base station through one or more component carriers; independently adjusting the transmission power for each of the channels so as not to exceed the maximum transmission power (P_CC_MAX) and the maximum transmission power (P_UE_MAX); and transmitting a signal to the base station through the plurality of channels for which the transmission power is adjusted.
摘要:
The present invention relates to a radio communication system. More particularly, the present invention relates to a signal transmission method in which a terminal transmits a signal in a radio communication system, said method comprising the steps of determining the transmission power for both a first channel and a second channel independently from one another; reducing at least the transmission power of the first channel or the transmission power of the second channel in consideration of a channel priority when the sum of the transmission power of the first channel and the transmission power of the second channel exceeds a maximum transmission power, and transmitting signals at the same time to a base station through the first channel and the second channel.
摘要:
A method of transmitting signals from a transmitter of a wireless communication system comprises determining each transmission power of a first signal and a second signal; if the difference Y in transmission power between the first signal and the second signal exceeds a predetermined value X, adjusting at least one of the transmission powers of the first signal or the second signal so as not to allow the difference in adjusted transmission power to exceed the predetermined value; and simultaneously transmitting the first signal and the second signal to a receiver using the adjusted transmission power.
摘要:
The present invention provided a method and an apparatus for mapping radio resources in a wireless communication system. A terminal determines the size of an RBG (resource block group of a f basic band according to the number of RBs (resource blocks) within the basic band in the overall bands which include the fundamental band and an aggregated segment band. The size of an RBG of the aggregated segment band is determined on the basis of the size of the RBG of the basic band.
摘要:
Provided are a method and apparatus of performing a HARQ in a multiple carrier system. A receiver determines the size of a soft buffer to be used in an effective HARQ process on the basis of the maximum number of effective HARQ processes over a plurality of component carriers and stores the received transport block in the soft buffer. The present invention enables the performance of a HARQ in an efficient manner by using multiple carriers in the event the size of the soft buffer is limited.
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:
A method of transmitting a sounding reference signal from a user equipment to a base station in a wireless communication system using a plurality of component carriers is disclosed. The present invention includes the steps of checking offset values of a plurality of the component carriers corresponding to a subframe having the sounding reference signal applied thereto from the base station and if the sounding reference signal is transmitted using a certain component carrier of a plurality of the component carriers, transmitting the sounding reference signal to the base station using the certain component carrier in a sub-frame corresponding to the offset value of the certain component carrier. Preferably, the present invention further includes the step of if the sounding reference signals are transmitted using at least two component carriers in the same subframe, transmitting the sounding reference signal having a longest transmission periodicity among the sounding reference signals only.
摘要:
The present invention is directed to a wireless communication system. Particularly, the present invention is directed to a method and an apparatus of transmitting ACK/NACK (acknowledgement/negative-ACK) signal at a user equipment in a wireless communication system, the method comprising: receiving a plurality of data blocks from a transmitting end; reserving a plurality of PUCCH (physical uplink control channel) resources for transmission of the ACK/NACK signal; mapping ACK/NACK hypothesis for the plurality of the data blocks to a PUCCH resource group including at least two reserved PUCCH resources; and transmitting at least two modulation symbols corresponding to the ACK/NACK hypothesis to the transmitting end via the PUCCH resource group.