Data transmission method, base station, user equipment, and system
Provided is a data transmission method, a base station, a user equipment, and a system. The method includes: adjusting and determining a frame structure of each time unit within a preset duration; notifying a user equipment (UE) of the adjusted frame structure; and performing data transmission according to the adjusted frame structure.
1. A method for wireless communication, comprising:
configuring, by a base station, a group of slot structures via a higher-layer signaling;
determining, by the base station, a structure of each slot within a preset duration;
notifying, by the base station, a user equipment (UE) of the determined structure via a physical layer signaling, wherein the physical layer signaling includes downlink control information that is carried in a search space of a common downlink control channel indicating uplink or downlink configuration information for subsequent k slots, wherein k is a positive integer, and wherein notifying the UE comprises:
dynamically indicating the uplink or downlink configuration of each slot based on a corresponding slot structure in the group of slot structures via the physical layer signaling; and
performing a data transmission according to the determined structure.
2. A method for wireless communication, comprising:
receiving, by a user equipment (UE), configuration information about a group of slot structures via a high-layer signaling from a base station;
receiving, by the UE, a structure of each slot within a preset duration from the base station via a physical layer signaling, wherein the physical layer signaling includes downlink control information that is carried in a common search space of a downlink control channel indicating uplink or downlink configuration information for subsequent k slots, wherein k is a positive integer, wherein receiving the structure of each slot comprises dynamically receiving, by the UE, the uplink or downlink configuration of each slot based on a corresponding slot structure in the group of slot structures via the physical layer signaling; and
performing a data transmission according to the scheduling information.
3. The method of claim 2 , wherein the method further comprises:
monitoring, by the UE, scheduling information from the base station within a predefined time;
scrambling, by the UE, the scheduling information using a specific identifier, wherein the scheduling information indicates a time domain position for transmitting a data packet.
4. A device for wireless communication, comprising:
a processor; and
a memory for storing instructions executable by the processor, wherein the processor is configured to:
configure a group of slot structures via a higher-layer signaling;
determine a structure of each slot within a preset duration; and
notify a user equipment (UE) of the determined structure via a physical layer signaling, wherein the physical layer signaling includes downlink control information that is carried in a common search space of a downlink control channel indicating uplink or downlink configuration information for subsequent k slots, wherein k is a positive integer, wherein the processor is configured to notify the UE based on:
dynamically indicating the uplink or downlink configuration of each slot based on a corresponding slot structure in the of slot structures via the physical layer signaling, and
perform data transmission according to the adjusted frame structure.
5. A device for wireless communication, comprising:
a processor; and
a memory for storing instructions executable by the processor, wherein the processor is configured to:
receive configuration information about a group of slot structures via a high-layer signaling from a base station;
receive a structure of each slot within a preset duration from a base station via a physical layer signaling, wherein the physical layer signaling includes downlink control information that is carried in a search space of a common downlink control channel indicating uplink or downlink configuration information for subsequent k slots, wherein k is a positive integer, wherein the processor is configured to receive the structure of each slot based on dynamically receiving the uplink or downlink configuration of each slot based on a corresponding slot structure in the group of slot structures via the physical layer signaling; and
perform a data transmission according to the structure.
6. The device of claim 5 , wherein the processor is configured to:
monitor scheduling information from the base station within predefined time;
scramble the scheduling information using a specific identifier, wherein the scheduling information indicates a time domain position for transmitting a data packet.