Transport block transmission in a wireless device and wireless network
View Patent ↗A received first DCI comprises: a first trigger field (indicating that the first DCI is triggered in response to a second DCI comprising a second trigger), a validation field (indicating a validation duration for receiving the second DCI validating the first DCI), a hybrid retransmission request (HARQ) identifier field, and a new data identifier (NDI) field. TBs are created in response to the first DCI. In response to monitoring not detecting the second DCI: the first DCI is invalidated and transmission of TBs dropped; the HARQ process ID and the NDI are stored; and the first TBs are stored in a HARQ buffer. A third DCI indicating a same value of the HARQ process ID is received. Uplink signals are transmitted in response to the third DCI. The stored NDI are employed to determine an adaptive-retransmission of the TBs or a new transmission of second TBs.
1. A method comprising:
receiving, by a wireless device, a first downlink control information (DCI) comprising:
a first trigger field indicating that the first DCI is triggered in response to a second DCI comprising a second trigger;
a validation field indicating a validation duration for receiving the second DCI validating the first DCI;
a hybrid retransmission request (HARQ) process identifier (ID) field; and
a new data identifier (NDI) field;
creating one or more first transport blocks (TBs) in response to the first DCI;
monitoring for the second DCI during at least a portion of the validation duration;
in response to the monitoring not detecting the second DCI:
invalidating the first DCI and dropping transmission of the one or more first TBs; and
storing the HARQ process ID and the NDI;
storing the one or more first TBs in a HARQ buffer;
receiving a third DCI indicating a same value of the HARQ process ID; and
transmitting uplink signals in response to the third DCI, wherein the wireless device employs the stored NDI to determine an adaptive-retransmission of the one or more first TBs or a new transmission of one or more second TBs.
2. The method of claim 1 , wherein the monitoring for the second DCI is performed on a common search space of a control channel.
3. The method of claim 1 , further comprising receiving, by the wireless device, at least one message comprising configuration parameters of a plurality of cells comprising a licensed assisted access cell.
4. The method of claim 1 , wherein the second DCI corresponds to a pre-defined radio network temporary identifier (RNTI).
5. The method of claim 1 , wherein the second DCI comprises:
a subframe format field indicating a subframe format; and
a subframe field indicating a subframe offset.
6. The method of claim 1 , wherein the first DCI further comprises a resource block assignment field indicating a resource block assignment for uplink transmission on a cell.
7. The method of claim 6 , wherein the second DCI comprises:
a subframe format field indicating a subframe format; and
a subframe field indicating a subframe offset.
8. The method of claim 1 , wherein the third DCI comprises:
a second NDI field; and
a second resource block assignment field indicating a second resource block assignment.
9. A wireless device comprising:
one or more processors;
memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
receive a first downlink control information (DCI) comprising:
a first trigger field indicating that the first DCI is triggered in response to a second DCI comprising a second trigger;
a validation field indicating a validation duration for receiving the second DCI validating the first DCI;
a hybrid retransmission request (HARQ) process identifier (ID) field; and
a new data identifier (NDI) field;
create one or more first transport blocks (TBs) in response to the first DCI;
monitor for the second DCI during at least a portion of the validation duration;
in response to the monitoring not detecting the second DCI:
invalidating the first DCI and dropping transmission of the one or more first TBs; and
storing the HARQ process ID and the NDI;
storing the one or more first TBs in a HARQ buffer;
receive a third DCI indicating a same value of the HARQ process ID; and
transmit uplink signals in response to the third DCI, wherein the wireless device employs the stored NDI to determine an adaptive-retransmission of the one or more first TBs or a new transmission of one or more second TBs.
10. The wireless device of claim 9 , wherein the monitoring for the second DCI is performed on a common search space of a control channel.
11. The wireless device of claim 9 , wherein the instructions, when executed by the one or more processors, cause the wireless device to receive at least one message comprising configuration parameters of a plurality of cells comprising a licensed assisted access cell.
12. The wireless device of claim 9 , wherein the second DCI corresponds to a pre-defined radio network temporary identifier (RNTI).
13. The wireless device of claim 9 , wherein the second DCI comprises:
a subframe format field indicating a subframe format; and
a subframe field indicating a subframe offset.
14. The wireless device of claim 9 , wherein the first DCI further comprises a resource block assignment field indicating a resource block assignment for uplink transmission on a cell.
15. The wireless device of claim 14 , wherein the second DCI comprises:
a subframe format field indicating a subframe format; and
a subframe field indicating a subframe offset.
16. The wireless device of claim 9 , wherein the third DCI comprises:
a second NDI field; and
a second resource block assignment field indicating a second resource block assignment.
17. A method comprising:
receiving, by a wireless device, a first downlink control information (DCI) comprising:
a first trigger field indicating that the first DCI is triggered in response to a second DCI comprising a second trigger;
a validation field indicating a validation duration for receiving the second DCI validating the first DCI;
creating, by a medium access entity (MAC), one or more first transport blocks (TBs) in response to the first DCI;
monitoring for the second DCI during at least a portion of the validation duration; and
in response to the monitoring not detecting the second DCI:
invalidating the first DCI and dropping transmission of the one or more first TBs; and
considering, by the MAC entity, that the transmission of the one or more first TBs to have been performed anyway.
18. The method of claim 17 , wherein the first DCI comprises:
a hybrid retransmission request (HARQ) process identifier (IC) field; and
a new data identifier (NDI) field.
19. The method of claim 18 , further comprising, when the MAC entity considers that the transmission of the one or more first TBs to have been performed:
storing the HARQ process ID and the NDI; and
storing the one or more first TBs in a HARQ buffer.
20. The method of claim 19 , further comprising:
receiving a third DCI indicating a same value of the HARQ process ID; and
transmitting uplink signals in response to the third DCI, wherein the wireless device employs the stored NDI to determine an adaptive-retransmission of the one or more first TBs or a new transmission of one or more second TBs.