Abstract:
Methods and apparatuses are provided for transmitting a signal using a sequence in a wireless communication system. A first sequence used to transmit a first signal in a first channel is determined by performing group-hopping using a pseudo-random pattern over a first group of sequences. A second sequence used to transmit a second signal in a second channel is determined by performing the group-hopping using the pseudo-random pattern over a second group of sequences.
Abstract:
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.
Abstract:
The present invention is a method in which a base station transmits a control channel signal in an orthogonal frequency division multiplexing (OFDM) communication system, wherein the method configures a physical resource block (PRB) from multiple resource elements (REs) for a control channel signal for scheduling, allocates at least one RE to a response channel signal, the at least one RE occupying the time domain the same as that of the RE used in a resource signal transmission in a data channel region of the PRB and occupying the frequency domain nearest to the RE used in the reference signal transmission, and transmits the control channel signal for scheduling and the response channel signal.
Abstract:
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) and two acknowledgements; generating a first symbol based on the CQI; generating a second symbol based on the two acknowledgements, if both the CQI and the two acknowledgements are to be transmitted on a physical uplink control channel (PUCCH); and transmitting the first symbol and the second symbol on the PUCCH. 1 is applied for generating the second symbol if the two acknowledgements have a first value, −1 is applied for generating the second symbol if the two acknowledgements have a second value, j is applied for generating the second symbol if the two acknowledgements have a third value, and −j is applied for generating the second symbol if the two acknowledgements have a fourth value, wherein the j is an imaginary unit.
Abstract:
A method and apparatus are described for a User Equipment (UE) to transmit in a control channel ACKnowledgement signals associated with a Hybrid Automatic Repeat reQuest process (HARQ-ACK signals) in response to receiving Transport Blocks (TBs) transmitted from a base station. The UE conveys the HARQ-ACK information by selecting one resource from multiple resources in the control channel and by selecting a constellation point of the modulation scheme for the HARQ-ACK signal. Transmission diversity is supported using different control channel resources that are already available to the UE without configuring additional resources. Design principles are described to optimally map the HARQ-ACK information to control channel resources and modulation constellation points for a Time Division Duplex (TDD) system and for a Frequency Division Duplex (FDD) system.
Abstract:
A method and apparatus for transmitting, by a user equipment, a hybrid automatic repeat request acknowledgement (HARQ-ACK) are provided. The method includes identifying power of the HARQ-ACK based on transmission power control information in first downlink control information; identifying 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 based on the resource.
Abstract:
Disclosed are a method and apparatus for wireless communication by and in a base station (BS) and a user equipment (UE). The method by the UE includes determining a first power for transmitting first control information on a physical uplink control channel (PUCCH), determining a second power for transmitting both first data and second control information on a first physical uplink shared channel (PUSCH), determining a third power for transmitting second data on a second PUSCH, reducing the third power if a sum of the first power, the second power and the third power exceeds a predetermined value, and transmitting at least one of the first control information on the PUCCH using the first power, the first data and the second control information on the first PUSCH using the second power, and the second data on the second PUSCH using the reduced third power.
Abstract:
A method apparatus and system for efficiently transmitting and receiving channels are provided in a wireless communication system based on Orthogonal Frequency Division Multiplexing (OFDM). A multiplexing scheme differs according to a channel when a transmitter transmits a packet data channel, a common control channel and a control channel designated for a particular user. Uncoded 1-bit information is broadly dispersed in frequency and time domains using multiplexing technology for maximizing diversity gain in a channel for transmitting information of at least one bit to a particular user like an acknowledgement (ACK) channel. The transmitter converts a sequence obtained by multiplexing multiple bits to be transmitted to a plurality of users to parallel signals, and broadly disperses the parallel signals in the time and frequency domains. When the uncoded 1-bit information is transmitted, reception reliability is improved because channel coding and transmission are efficiently performed using a small amount of resources.
Abstract:
An apparatus is provided for receiving a signal in a wireless communication system. The apparatus includes a receiver configured to receive a signal including a reference signal, data information and acknowledgement information. The apparatus also includes a controller configured to control de-mapping the acknowledgement information that is mapped in first symbols in a slot of a subframe, the reference signal not being mapped to the first symbols and the first symbols being directly adjacent to a middle symbol in the slot, and de-mapping the data information that is mapped to remaining symbols in the slot.
Abstract:
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.