Abstract:
The present invention relates to a method of selecting, by an eNB, a PCC for UE in a multiple component carrier system. The method includes obtaining mobility state information about the UE and coverage information and load information about carriers managed by the eNB; determining whether or not a mobility state value of the UE is greater than a specific threshold based on the obtained mobility state information; and selecting the PCC based on the load information if, as a result of the determination, the mobility state value is greater than the specific threshold. In accordance with the present invention, a BS adaptively selects a PCC by taking the load state of a carrier (or cell), UE mobility velocity, and the coverage of each carrier (or cell) into consideration.
Abstract:
A method for reporting sidelink HARQ response information, performed by a terminal, includes the steps of: receiving, from a base station, information on allocation of a PSSCH resource for PSSCH transmission; determining a PSFCH resource for PSFCH reception corresponding to the PSSCH transmission; determining a transmission time point of HARQ response information corresponding to the PSSCH transmission; and transmitting the HARQ response information, corresponding to the PSSCH transmission, to the base station at the determined time point, wherein the transmission time point of the HARQ response information is expressed as a time offset, L, from a time point of the PSFCH resource, and information on the transmission time point of the HARQ response information is transmitted from the base station to the terminal.
Abstract:
Disclosed are various methods for transmitting or receiving data or control information having high reliability conditions. A method for operating a terminal which transmits uplink control information (UCI) includes: a step of generating UCI; a step of comparing the priority of an uplink (UL) control channel for the transmission of the UCI with the priority of a UL data channel when some symbols of the UL control channel and the UL data channel overlap; and a step of selecting the UL channel having a higher priority among the UL control channel and the UL data channel, and transmitting the UCI to a base station through the selected UL channel.
Abstract:
Disclosed are methods and apparatuses for transmitting and receiving data channels in a communication system. An operation method of a terminal in a communication system may comprise receiving, from a base station, resource allocation information of a plurality of physical uplink shared channels (PUSCHs) used for repetitive transmission of a same transport block (TB); identifying a position of each of the plurality of PUSCHs in a time domain based on the resource allocation information; and repeatedly transmitting the same TB to the base station at the position of each of the plurality of PUSCHs. Therefore, performance of the communication system can be improved.
Abstract:
An operation method of a first terminal performing sidelink communication may comprise the steps of: receiving resource coordination information from a second terminal; if the resource coordination information is information on preferred resource(s), selecting candidate resources to be used for transmission of the first terminal based on the preferred resource(s); and if the resource coordination information is information on non-preferred resource(s), excluding the non-preferred resource(s) from the candidate resources to be used for transmission of the first terminal.
Abstract:
The method and apparatus for supporting sidelink carrier aggregation are disclosed. A method of a first terminal may comprise: aligning sidelink (SL) resources in a first component carrier (CC) and a second CC; and performing SL communication with a second terminal using the SL resources aligned within the first CC and the second CC.
Abstract:
A method and a device for supporting multicast transmission are disclosed. A terminal operating method comprises the steps of: receiving, from a base station, an RRC message indicating the activation of HARQ-ACK feedback; receiving, from the base station, a first DCI including information indicating deactivation of the HARQ-ACK feedback; receiving, from the base station, a first multicast PDSCH on the basis of first scheduling information included in the first DCI; generating a first HARQ-ACK bit for the first multicast PDSCH even if the first DCI indicates deactivation of the HARQ-ACK feedback; generating a HARQ codebook including the first HARQ-ACK bit; and transmitting, to the base station, the HARQ codebook through an uplink channel.
Abstract:
A method for operation of a terminal for monitoring a downlink control channel comprises the steps of: receiving configuration information of a first SSSG and a second SSSG from a base station; monitoring the first SSSG in a first period; and monitoring the second SSSG in a second period. DCI including an indication for switching a target to be monitored from the first SSSG to the second SSSG in a period before the second period may be received from the base station.
Abstract:
An operation method of a terminal in a communication system may comprise receiving first random access (RA) configuration information and second RA configuration information from a base station; transmitting a Msg1 to the base station based on the second RA configuration information; receiving a Msg2, which is a response to the Msg1, from the base station; and repeatedly transmitting a Msg3 K times to the base station.
Abstract:
Disclosed is a method for configuring a bandwidth for supporting a broadband carrier in a communication system. An operation method of a base station comprises the steps of: configuring a first bandwidth part and a second bandwidth part for a terminal; configuring a reserved resource for the first bandwidth part in a resource area in which the first bandwidth part and the second bandwidth part overlap; and performing an operation of transmitting or receiving a second data channel, which is scheduled to the second bandwidth part, together with the terminal by using the reserved resource. Therefore, the performance of the communication system can be improved.