摘要:
A method and apparatus are provided for transmitting one or more positive or negative acknowledgement (ACK/NACK) bits in response to data reception in a single-carrier frequency division multiple access (SC-FDMA) communication system. The method includes, if the one or more ACK/NACK bits are one bit, applying a first code to a first symbol, if the acknowledgement bit is NACK, and applying a second code to the first symbol, if the acknowledgement bit is ACK; if the one or more ACK/NACK bits are two bits, applying quadrature phase shift keying (QPSK) modulation to the first symbol based on a value of the two ACK/NACK bits; if no ACK/NACK bit exists, applying the first code to the first symbol; and transmitting the first symbol and a second symbol in a slot.
摘要:
Methods and apparatuses are provided for wireless communication. A scheduling message is received that includes first information on at least one resource allocated for uplink transmission and second information. Data and a pilot are transmitted via the allocated at least one resource for uplink transmission. An ACK/NACK resource is identified based on a lowest index among at least one index of the allocated at least one resource for uplink transmission and the second information. An ACK/NACK signal is received in response to the transmitted data using the identified ACK/NACK resource.
摘要:
Methods and apparatuses are provided for controlling reference signal (RS) transmission between a user equipment (UE) and a base station in a wireless communication system. A method includes transmitting, to the UE, downlink control information (DCI) including RS request information. The RS request information includes one or two binary elements based on a DCI format. If an RS transmission triggered by the RS request information is to occur in a same subframe as another RS transmission previously configured to the UE from the base station, the UE transmits the RS triggered by the RS request information.
摘要:
An apparatus and a method for transmitting/receiving downlink data channel signal transmission information in a cellular radio communication system using a Cooperative Multi-Point (CoMP) scheme are provided. In the downlink data channel signal transmission information transmission method, a Base Station (BS) transmits downlink data channel signal transmission information including information related to Resource Elements (REs) scheduled for a downlink data channel signal transmission to a User Equipment (UE), and transmits downlink data channel signal non-transmission information including information related to REs through which a downlink data channel signal is not transmitted among the REs scheduled for the downlink data channel signal transmission to the UE.
摘要:
Methods and apparatuses are provided for wireless communications. Configuration information including a resource start offset and information for a transmission type of an enhanced physical downlink control channel (EPDCCH) are transmitted. Downlink control information (DCI) is transmitted to a user equipment (UE) using at least one antenna port of a base station on the EPDCCH using at least one of control channel elements (CCEs). A resource of a physical uplink control channel (PUCCH) is determined based on a first CCE of the at least one of CCE, information in the DCI, and the resource start offset in the configuration information, if the transmission type of the EPDCCH is distributed transmission. A hybrid automatic repeat request acknowledgement (HARQ-ACK) signal is received on the determined resource.
摘要:
Methods and apparatus are described for User Equipment (UE) to concurrently transmit Uplink Control Information (UCI) and data information to a Node B. The Node B can configure the UE to transmit UCI together with data information in a Physical Uplink Shared CHannel (PUSCH) or separate from data information in a Physical Uplink Control CHannel (PUCCH). The UE may also determine whether to transmit UCI together with data information in the PUSCH or separate from data information in the PUCCH based on criteria involving a ratio of PUSCH resources for UCI transmission over the total PUSCH resources, a Modulation and Coding Scheme (MCS) for the data information, an absolute power difference between PUCCH and PUSCH transmissions, whether the PUSCH transmission uses frequency hopping, and/or whether spatial multiplexing is used for the data transmission.
摘要:
Methods and apparatuses are provided for transmitting data by a user equipment (UE) in a communication system. Resource information is received from a node B. A hopping parameter is determined based on a sequence defined by a cell specific seed. A mirroring parameter is determined based on the sequence defined by the cell specific seed. A resource for data transmission is determined based on the resource information, the hopping parameter, and the mirroring parameter. The data is transmitted using the resource for data transmission. The hopping parameter and the mirroring parameter are determined at a slot.
摘要:
Methods and apparatuses are provided for transmitting data by a user equipment (UE) in a communication system. Resource information is received from a node B. One of inter-subframe hopping, and intra and inter-subframe hopping, are identified. A hopping parameter is determined. A mirroring parameter is determined. A resource is determined for data transmission based on the resource information, the hopping parameter, and the mirroring parameter. The data is transmitted using the resource for data transmission. The hopping parameter and the mirroring parameter are determined at a slot, if the intra and inter-subframe hopping is identified.
摘要:
A method and apparatus for transmitting, by a user equipment, a hybrid automatic repeat request acknowledgement (HARQ-ACK) are provided. The method includes identifying a transmission power of the HARQ-ACK based on transmission power control information in first downlink control information for a primary cell; identifying, for a time division duplexing (TDD), a resource for transmission of the HARQ-ACK based on transmission power control information in second downlink control information with a downlink assignment index (DAI) value greater than 1; and transmitting the HARQ-ACK to a base station based on the resource on the primary cell.
摘要:
A method and apparatus for transmitting and receiving information symbols in a communication system are provided. A method includes determining a channel quality indicator (CQI); determining two acknowledgement bits in response to data reception; generating a first symbol based on the CQI; generating a second symbol based on the two acknowledgement bits; and transmitting the first symbol and the second symbol. A first code is applied to the second symbol, if the two acknowledgement bits have a first value, a second code is applied to the second symbol, if the two acknowledgement bits have a second value, a third code is applied to the second symbol, if the two acknowledgement bits have a third value, and a fourth code is applied to the second symbol, if the two acknowledgement bits have a fourth value.