Method and device for transmission
The disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. According to embodiments of the disclosure, methods and devices for efficient uplink and downlink transmission are provided, so that delay can be reduced and reliability can be improved.
1 . A method performed by a user equipment (UE) in a communication system, the method comprising:
receiving, from a base station, downlink control information (DCI) for scheduling at least one physical uplink shared channel (PUSCH), wherein the DCI includes information on a channel access type of a channel access procedure;
identifying, from the information, the channel access type and an initiator of channel occupancy, wherein the channel access type corresponds to the initiator; and
transmitting, to the base station, the at least one PUSCH within the channel occupancy of the identified initiator based on the channel access procedure according to the identified channel access type.
2 . The method of claim 1 , wherein a channel access type of without sensing corresponds to the initiator being the base station.
3 . The method of claim 1 , wherein a channel access type of sensing within a 25 μs interval corresponds to the initiator being the base station.
4 . The method of claim 1 , wherein in case that the initiator is the UE;
the UE initiates the channel occupancy based on the channel access procedure according to the identified channel access type for UE-initiated channel occupancy,
the channel access type corresponds to sensing within a 25 μs interval,
the channel access procedure is performed immediately before a starting point of the at least one PUSCH, and
the at least one PUSCH is at a starting point of the UE-initiated channel occupancy.
5 . A method performed by a base station in a communication system, the method comprising:
transmitting, to a user equipment (UE), downlink control information (DCI) for scheduling at least one physical uplink shared channel (PUSCH), wherein the DCI includes information on a channel access type of a channel access procedure, wherein the information is used for providing the channel access type and an initiator of a channel occupancy, and wherein the channel access type corresponds to the initiator; and
receiving, from the UE, the PUSCH within the channel occupancy of the provided initiator after transmission of the DCI.
6 . The method of claim 5 , wherein a channel access type of without sensing corresponds to being the base station.
7 . The method of claim 5 , wherein a channel access type of sensing within a 25 μs interval corresponds to the initiator being the base station.
8 . The method of claim 5 , wherein in case that the information provides the initiator as the UE;
the channel access type is for UE-initiated channel occupancy,
the channel access type corresponds to sensing within a 25 μs interval,
the at least one PUSCH is at a starting point of the UE-initiated channel occupancy.
9 . A user equipment (UE) in a communication system, the UE comprising:
a transceiver; and
a processor coupled with the transceiver and configured to:
receive, from a base station, downlink control information (DCI) for scheduling at least one physical uplink shared channel (PUSCH), wherein the DCI includes information on a channel access type of a channel access procedure;
identify, from the information, the channel access type and an initiator of channel occupancy, wherein the channel access type corresponds to the initiator; and
transmit, to the base station, the at least one PUSCH within the channel occupancy of the identified initiator based on the channel access procedure according to the identified channel access type.
10 . The UE of claim 9 , wherein a channel access type of without sensing corresponds to the initiator being the base station.
11 . The UE of claim 9 , wherein a channel access type of sensing within a 25 μs interval corresponds to the initiator being the base station.
12 . The UE of claim 9 , wherein in case that the initiator is the UE:
the UE initiates the channel occupancy based on the channel access procedure according to the identified channel access type for UE-initiated channel occupancy,
the channel access type corresponds to sensing within a 25 μs interval,
the channel access procedure is performed immediately before a starting point of the at least one PUSCH, and
the at least one PUSCH is at a starting point of the UE-initiated channel occupancy.
13 . A base station in a communication system, the base station comprising:
a transceiver; and
a processor coupled with the transceiver and configured to:
transmit, to a user equipment (UE), downlink control information (DCI) for scheduling at least one physical uplink shared channel (PUSCH), wherein the DCI includes information on a channel access type of a channel access procedure, wherein the information is used for providing the channel access type and an initiator of a channel occupancy, and wherein the channel access type corresponds to the initiator; and
receive, from the UE, the PUSCH within the channel occupancy of the provided initiator after transmission of the DCI.
14 . The base station of claim 13 , wherein a channel access type of without sensing corresponds to the initiator being the base station.
15 . The base station of claim 13 , wherein a channel access type of sensing within a 25 μs interval corresponds to the initiator being the base station.
16 . The base station of claim 13 , wherein in case that the information provides the initiator as the UE:
the channel access type is for UE-initiated channel occupancy,
the channel access type corresponds to sensing within a 25 μs interval,
the at least one PUSCH is at a starting point of the UE-initiated channel occupancy.