Downlink control information fields for a licensed cell and an unlicensed cell in a wireless network

1. A method comprising:

receiving, by a wireless device, a first downlink control information comprising a first field having a first number of bits indicating:

a first modulation and coding scheme (MCS); and

a first redundancy version (RV);

transmitting, via a licensed cell, a first transport block based on the first MCS and the first RV;

receiving a second downlink control information comprising:

an MCS field having the first number of bits indicating a second MCS;

an RV field indicating a second RV; and

a transmit power control field for determining a transmit power; and

transmitting, via a physical uplink shared channel of an unlicensed cell, a second transport block based on the second MCS, the second RV, and the transmit power.

2. The method of claim 1 , wherein:

the first field is encoded by five bits;

the MCS field is encoded by five bits;

a table is employed to determine the first MCS using the first field; and

the table is employed to determine the second MCS using the MCS field.

3. The method of claim 1 , wherein the first RV has one of the following values: one, two or three.

4. The method of claim 1 , wherein the RV field has one of the following values: zero, one, two, or three.

5. The method of claim 1 , wherein:

the first downlink control information does not comprise a hybrid automatic repeat request (HARQ) process ID; and

the second downlink control information comprises a HARQ process ID.

6. The method of claim 1 , wherein the second downlink control information further comprises a listen before talk (LBT) field employed for performing an LBT procedure before transmitting the second transport block.

7. The method of claim 1 , wherein the second downlink control information further comprises a resource blocks (RBs) field employed for transmitting the second transport block.

8. The method of claim 1 , wherein the second downlink control information further comprises a new data indicators (NDI) field employed for transmitting the second transport block.

9. The method of claim 1 , wherein the MCS is for an initial transmission with a redundancy version of zero.

10. The method of claim 1 , wherein:

the first downlink control information indicates first uplink resources of the licensed cell; and

the second downlink control information indicates second uplink resources of the unlicensed cell.

11. A wireless device comprising:

one or more processors; and

memory storing instructions that, when executed by the one or more processors, cause the wireless device to:

receive a first downlink control information comprising a first field having a first number of bits indicating:

a first modulation and coding scheme (MCS); and

a first redundancy version (RV);

transmit, via a licensed cell, a first transport block based on the first MCS and the first RV;

receive a second downlink control information comprising:

an MCS field having the first number of bits indicating a second MCS;

an RV field indicating a second RV; and

a transmit power control field for determining a transmit power; and

transmit, via a physical uplink shared channel of an unlicensed cell, a second transport block based on the second MCS, the second RV, and the transmit power.

12. The wireless device of claim 11 , wherein:

the first field is encoded by five bits;

the MCS field is encoded by five bits;

a table is employed to determine the first MCS using the first field; and

the table is employed to determine the second MCS using the MCS field.

13. The wireless device of claim 11 , wherein the first RV has one of the following values: one, two or three.

14. The wireless device of claim 11 , wherein the RV field has one of the following values: zero, one, two, or three.

15. The wireless device of claim 11 , wherein:

the first downlink control information does not comprise a hybrid automatic repeat request (HARQ) process ID; and

the second downlink control information comprises a HARQ process ID.

16. The wireless device of claim 11 , wherein the second downlink control information further comprises a listen before talk (LBT) field employed for performing an LBT procedure before transmitting the second transport block.

17. The wireless device of claim 11 , wherein the second downlink control information further comprises a resource blocks (RBs) field employed for transmitting the second transport block.

18. The wireless device of claim 11 , wherein the second downlink control information further comprises a new data indicators (NDI) field employed for transmitting the second transport block.

19. The wireless device of claim 11 , wherein the MCS is for an initial transmission with a redundancy version of zero.

20. A system comprising:

a base station comprising:

one or more processors; and

memory storing instructions that, when executed by the one or more processors, cause the base station to:

transmit a first downlink control information comprising a first field having a first number of bits indicating:

a first modulation and coding scheme (MCS); and

a first redundancy version (RV); and

a wireless device comprising:

one or more processors; and

memory storing instructions that, when executed by the one or more processors, cause the wireless device to:

receive the first downlink control information;

transmit, via a licensed cell, a first transport block based on the first MCS and the first RV;

receive a second downlink control information comprising:

an MCS field having the first number of bits indicating a second MCS;

an RV field indicating a second RV; and

a transmit power control field for determining a transmit power; and

transmit, via a physical uplink shared channel of an unlicensed cell, a second transport block based on the second MCS, the second RV, and the transmit power.