Method of handling communication operations and related communication device
A method of handling a communication operation for a communication device configured with a first cell comprises the steps of performing a first communication operation in a subframe via the first cell, if a direction of the subframe determined according to a uplink (UL)/downlink (DL) configuration of the first cell and a direction of the subframe determined according to a reference UL/DL configuration are the same; and stopping the first communication operation in the subframe via the first cell, if the direction of the subframe determined according to the UL/DL configuration of the first cell and the direction of the subframe determined according to the reference UL/DL configuration are the different.
1. A method of handling a communication operation for a communication device configured with a first cell and a second cell of a network, the method comprising the steps of:
performing a first communication operation in a subframe via the first cell, if a direction of the subframe determined according to a uplink (UL)/downlink (DL) configuration of the first cell and a direction of the subframe determined according to a reference UL/DL configuration are the same; and
stopping the first communication operation in the subframe via the first cell, if the direction of the subframe determined according to the UL/DL configuration of the first cell and the direction of the subframe determined according to the reference UL/DL configuration are different;
wherein the communication device receives information of the reference UL/DL configuration transmitted by the network, and the reference UL/DL configuration is different than both the UL/DL configuration of the first cell and a UL/DL configuration of the second cell.
2. The method of claim 1 , wherein the first communication operation comprises the steps of:
transmitting a DL HARQ feedback according to the UL/DL configuration of the first cell, if for each UL subframe of the UL/DL configuration of the first cell, a UL subframe with a subframe index corresponds to a UL subframe of the reference UL/DL configuration with the subframe index; and
transmitting the DL HARQ feedback according to the reference UL/DL configuration, if for each UL subframe of the reference UL/DL configuration, a UL subframe with a subframe index correspond to a UL subframe of the UL/DL configuration of the first cell with the subframe index;
wherein the DL HARQ feedback corresponds to at least one reception in a previous subframe.
3. The method of claim 1 , wherein the first communication operation comprises the steps of:
receiving a UL HARQ feedback according to the UL/DL configuration of the first cell, if for each DL subframe of the UL/DL configuration of the first cell, a DL subframe with a subframe index corresponds to a DL subframe of the reference UL/DL configuration with the subframe index; and
receiving the UL HARQ feedback according to the reference UL/DL configuration, if for each DL subframe of the reference UL/DL configuration, a DL subframe with a subframe index correspond to a DL subframe of the UL/DL configuration of the first cell with the subframe index;
wherein the UL HARQ feedback corresponds to at least one transmission in a previous subframe.
4. The method of claim 1 , wherein the first communication operation comprises the steps of:
performing a transmission according to the UL/DL configuration of the first cell, if for each DL subframe of the UL/DL configuration of the first cell, a DL subframe with a subframe index corresponds to a DL subframe of the reference UL/DL configuration with the subframe index; and
performing the transmission according to the reference UL/DL configuration, if for each DL subframe of the reference UL/DL configuration, a DL subframe with a subframe index correspond to a DL subframe of the UL/DL configuration of the first cell with the subframe index;
wherein the transmission is triggered by a UL grant received in a previous subframe.
5. The method of claim 1 , wherein the first communication operation comprises the step of:
transmitting a DL HARQ feedback according to a HARQ UL/DL configuration, if for each non-conflicting DL subframe of the UL/DL configuration of the first cell, a non-conflicting DL subframe with a subframe index corresponds to a DL subframe of the HARQ UL/DL configuration with the same subframe index;
wherein whether a DL subframe is non-conflicting is determined according to the UL/DL configuration of the first cell and the reference UL/DL configuration.
6. The method of claim 1 , wherein the first communication operation comprises the step of:
receiving a UL HARQ feedback according to a HARQ UL/DL configuration, if for each non-conflicting UL subframe of the UL/DL configuration of the first cell, a non-conflicting UL subframe with a subframe index corresponds to a UL subframe of the HARQ UL/DL configuration with the same subframe index;
wherein whether a UL subframe is non-conflicting is determined according to the UL/DL configuration of the first cell and the reference UL/DL configuration.
7. The method of claim 1 , wherein the first communication operation comprises the step of:
performing a transmission according to a scheduling UL/DL configuration, if for each non-conflicting UL subframe of the UL/DL configuration of the first cell, a non-conflicting UL subframe with a subframe index corresponds to a UL subframe of the scheduling UL/DL configuration with the same subframe index;
wherein whether a UL subframe is non-conflicting is determined according to the UL/DL configuration of the first cell and the reference UL/DL configuration.
8. The method of claim 1 , wherein the communication device is configured with a second cell of the network and the method further comprises the steps of:
performing a second communication operation in the subframe via the second cell, when a direction of the subframe determined according to a UL/DL configuration of the second cell and the direction of the subframe determined according to the reference UL/DL configuration are the same; and
stopping the second communication operation in the subframe via the second cell, when the direction of the subframe determined according to the UL/DL configuration of the second cell and the direction of the subframe determined according to the reference UL/DL configuration are different.
9. The method of claim 8 , wherein the first cell and the second cell are time-division duplexing (TDD) cells.
10. The method of claim 8 , wherein the first cell is a primary cell and the second cell is a secondary cell.
11. The method of claim 8 , wherein the first cell is a TDD cell and the second cell is a frequency-division duplexing (FDD) cell.
12. The method of claim 8 , wherein the first cell is a FDD cell and the second cell is a TDD cell.
13. The method of claim 1 , wherein the first cell is a TDD cell or a FDD cell.
14. The method of claim 1 , wherein the first cell is a primary cell or a secondary cell.
15. The method of claim 1 , wherein the communication device receives the information of the reference UL/DL configuration in a higher layer signaling or a physical layer signaling transmitted by the network.
16. The method of claim 1 , wherein the communication device receives the information of the reference UL/DL configuration in a communication device-specific signaling or a group-specific signaling transmitted by the network.
17. The method of claim 1 , wherein the communication device receives the information of the reference UL/DL configuration in a unicast, a multicast or a broadcast transmitted by the network.
18. The method of claim 1 , wherein the communication device is a half-duplex communication device.
19. A communication device capable of handling a communication operation according claim 1 .