User equipment and uplink data transmission method thereof
A user equipment receives a first uplink grant and a second uplink grant from a base station. The first uplink grant assigns first uplink resources, and the second uplink grant assigns second uplink resources. The first uplink resources and the second uplink resources overlap within a time interval. The user equipment determines whether the transmission of second data has priority over that of first data. When determining that the transmission of the second data has priority over that of the first data, the user equipment determines one of the first uplink resources and the second uplink resources as the designated resources of the second data, and transmits the second data to the base station according to the designated resources within the time interval.
1. A user equipment, comprising:
a storage, being configured to store first data and second data;
a transceiver, being configured to receive a first uplink grant and a second uplink grant from a base station, wherein the first uplink grant assigns first uplink resources, the second uplink grant assigns second uplink resources, the second uplink grant corresponds to a predetermined white list, and the first uplink resources and the second uplink resources overlap within a time interval; and
a processor, being connected to the storage and the transceiver, and being configured to determine whether transmission of the second data has priority over transmission of the first data;
wherein when the processor determines that the transmission of the second data has priority over the transmission of the first data, the processor determines one of the first uplink resources and the second uplink resources as designated resources of the second data, and the transceiver transmits the second data to the base station according to the designated resources within the time interval;
wherein in a case where the processor determines that the transmission of the second data has priority over the transmission of the first data and defaults to selecting the second uplink resources as the designated resources of the second data, the processor further determines whether a logical channel of the second data is recorded on the predetermined white list, and when the processor determines that the logical channel of the second data is recorded on the predetermined white list, the processor determines to select the second uplink resources as the designated resources of the second data.
2. The user equipment of claim 1 , wherein:
the first data has not been encapsulated into a first protocol data unit (PDU), and the second data has not been encapsulated into a second PDU;
the processor refrains from encapsulating the first data into the first PDU, and encapsulates the second data into the second PDU according to the designated resources; and
the transceiver transmits the second PDU to the base station according to the designated resources within the time interval.
3. The user equipment of claim 1 , wherein:
the second data has not been encapsulated into a second PDU, and the first data has been encapsulated into a first PDU;
the processor discards the first PDU, and encapsulates the second data into the second PDU according to the designated resources; and
the transceiver transmits the second PDU to the base station according to the designated resources within the time interval.
4. The user equipment of claim 1 , wherein:
the second data has not been encapsulated into a second PDU, the first data has been encapsulated into a first PDU, and the transceiver has transmitted the first PDU;
the processor encapsulates the second data into the second PDU according to the designated resources; and
the transceiver transmits the second PDU to the base station according to the designated resources within the time interval, and preempts the first PDU.
5. The user equipment of claim 1 , wherein the processor determines whether the transmission of the second data has priority over the transmission of the first data in a Media Access Control layer.
6. The user equipment of claim 5 , wherein the processor determines whether the transmission of the second data has priority over the transmission of the first data according to logical channel prioritization.
7. The user equipment of claim 1 , wherein the processor determines one of the first uplink resources and the second uplink resources as the designated resources of the second data according to uplink grant attributes in a physical layer.
8. The user equipment of claim 1 , wherein the first uplink grant is a dynamic grant, the second uplink grant is a configured grant, the first data is Enhanced Mobile Broadband data, and the second data is Ultra-Reliable and Low Latency Communications data.
9. The user equipment of claim 8 , wherein:
when determining that the transmission of the second data has priority over the transmission of the first data, the processor determines the second uplink resources as the designated resources of the second data; and
when determining that the transmission of the first data has priority over the transmission of the second data, the processor determines the first uplink resources as designated resources of the first data, and the transceiver transmits the first data to the base station according to the designated resources of the first data within the time interval.
10. The user equipment of claim 9 , wherein before transmitting the first data or the second data to the base station within the time interval, the transceiver further transmits a notification of the respective designated resources to the base station.
11. An uplink data transmission method, comprising:
receiving, by a user equipment, a first uplink grant and a second uplink grant from a base station, wherein the first uplink grant assigns first uplink resources, the second uplink grant assigns second uplink resources, the second uplink grant corresponds to a predetermined white list; and the first uplink resources and the second uplink resources overlap within a time interval;
determining, by the user equipment, whether transmission of second data has priority over transmission of first data, wherein the first data and the second data are stored in the user equipment; and
determining one of the first uplink resources and the second uplink resources as designated resources of the second data and transmitting the second data to the base station according to the designated resources within the time interval, by the user equipment, when the user equipment determines that the transmission of the second data has priority over the transmission of the first data;
wherein in a case where the processor determines that the transmission of the second data has priority over the transmission of the first data and defaults to selecting the second uplink resources as the designated resources of the second data, the uplink data transmission method further comprises: determining, by the user equipment, whether a logical channel of the second data is recorded on the predetermined white list, and when determining that the logical channel of the second data is recorded on the predetermined white list, the user equipment determines to select the second uplink resources as the designated resources of the second data.
12. The uplink data transmission method of claim 11 , wherein:
the first data has not been encapsulated into a first protocol data unit (PDU), and the second data has not been encapsulated into a second PDU;
the uplink data transmission method further comprises: refraining from encapsulating the first data into the first PDU and encapsulating the second data into the second PDU according to the designated resources, by the user equipment; and
in the step of transmitting the second data, the user equipment transmits the second PDU to the base station according to the designated resources within the time interval.
13. The uplink data transmission method of claim 11 , wherein:
the second data has not been encapsulated into a second PDU, and the first data has been encapsulated into a first PDU;
the uplink data transmission method further comprises: discarding the first PDU and encapsulating the second data into the second PDU according to the designated resources, by the user equipment; and
in the step of transmitting the second data, the user equipment transmits the second PDU to the base station according to the designated resources within the time interval.
14. The uplink data transmission method of claim 11 , wherein:
the second data has not been encapsulated into a second PDU, the first data has been encapsulated into a first PDU, and the user equipment has transmitted the first PDU;
the uplink data transmission method further comprises: encapsulating the second data into the second PDU according to the designated resources, by the user equipment; and
in the step of transmitting the second data, the user equipment transmits the second PDU to the base station according to the designated resources within the time interval, and preempts the first PDU.
15. The uplink data transmission method of claim 11 , wherein the user equipment determines whether the transmission of the second data has priority over the transmission of the first data in a Media Access Control layer.
16. The uplink data transmission method of claim 15 , wherein the user equipment determines whether the transmission of the second data has priority over the transmission of the first data according to logical channel prioritization.
17. The uplink data transmission method of claim 11 , wherein the user equipment determines one of the first uplink resources and the second uplink resources as the designated resources of the second data according to uplink grant attributes in a physical layer.
18. The uplink data transmission method of claim 11 , wherein the first uplink grant is a dynamic grant, the second uplink grant is a configured grant, the first data is Enhanced Mobile Broadband data, and the second data is Ultra-Reliable and Low Latency Communications data.
19. The uplink data transmission method of claim 18 , wherein:
when determining that the transmission of the second data has priority over the transmission of the first data, the user equipment determines the second uplink resources as the designated resources of the second data; and
when the user equipment determines that the transmission of the first data has priority over the transmission of the second data, the uplink data transmission method further comprises: determining the first uplink resources as designated resources of the first data and transmitting the first data to the base station according to the designated resources of the first data within the time interval, by the user equipment.
20. The uplink data transmission method of claim 19 , further comprising:
before transmitting the first data or the second data to the base station within the time interval, transmitting, by the user equipment, a notification of the respective designated resources to the base station.