Method and apparatus for transmitting downlink control information for resource allocation in a wireless communication system
A method and apparatus for transmitting and receiving Downlink Control Information (DCI) in a wireless communication system. A method for transmitting DCI by a base station includes generating DCI including at least one of a data resource allocation indicator, a data format indicator for at least one Transport Block (TB), and a DeModulation Reference Signal (DMRS) resource allocation indicator corresponding to the at least one TB; and sending the DCI to a terminal. The DMRS resource allocation indicator includes a rank pattern for the at least one TB, an allocated scrambling code type, and DMRS port information.
1. A method for transmitting Downlink Control Information (DCI) by a base station in a wireless communication system, the method comprising the steps of:
generating DCI including at least one of a data resource allocation indicator, a data format indicator for at least one Transport Block (TB), and a DeModulation Reference Signal (DMRS) resource allocation indicator corresponding to the at least one TB; and
sending the DCI to a terminal,
wherein the DMRS resource allocation indicator includes a rank pattern for the at least one TB, an allocated scrambling code type, and DMRS port information.
2. The method of claim 1 , wherein the DMRS resource allocation indicator is indexed according to:
One TB
Both TB
Enabled
Enabled
Index
Message
Index
Message
0
Rank 2 pattern,
0
Rank 2 pattern,
DMRS port 0
DMRS port 0, 1
with SC0
with SC0
allocated
allocated
1
Rank 2 pattern,
1
Rank 4 pattern,
DMRS port 1
DMRS port 0, 1,
with SC0
2 with SC0
allocated
allocated
2
Rank 2 pattern,
2
Rank 2 pattern,
DMRS port 0
DMRS port 0, 1
with SC1
with SC1
allocated
allocated
3
Rank 2 pattern,
3
Rank 4 pattern,
DMRS port 1
DMRS port 0, 1,
with SC1
2, 3 with SC0
allocated
allocated
4
Rank 2 pattern,
4
Rank 8 pattern,
DMRS port 0, 1
DMRS port 0, 1,
with SC0
2, 3, 4 with SC0
allocated
allocated
5
Rank 2 pattern,
5
Rank 8 pattern,
DMRS port 0, 1
DMRS port 0, 1,
with SC1
2, 3, 4, 5 with
allocated
SC0 allocated
6
Rank 4 pattern,
6
Rank 8 pattern,
DMRS port 0, 1,
DMRS port 0, 1,
2 with SC0
2, 3, 4, 5, 6 with
allocated
SC0 allocated
7
Rank 4 pattern,
7
Rank 8 pattern,
DMRS port 0, 1,
DMRS port 0, 1,
2, 3 with SC0
2, 3, 4, 5, 6, 7
allocated
with SC0
allocated.
3. The method of claim 1 , wherein the terminal is allocated resources in a unit of one of a localized or distributed Resource Block (RB) group, a localized RB, and a localized RB group.
4. The method of claim 1 , wherein the DCI further includes at least one of resource allocation information, data format information, and an indicator for use of an entire control information included in a last DCI transmitted to the terminal.
5. The method of claim 1 , further comprising providing Hybrid Automatic Repeat Request (HARQ) type indication information using one of the DCI and a higher layer signaling.
6. A method for receiving Downlink Control Information (DCI) in a terminal in a wireless communication system, the method comprising:
receiving DCI transmitted from a base station, the DCI including at least one of a data resource allocation indicator, a data format indicator for at least one Transport Block (TB), and a Demodulation Reference Signal (DMRS) resource allocation indicator corresponding to the at least one TB; and
processing the DCI,
wherein the DMRS resource allocation indicator includes a rank pattern for the at least one TB, an allocated scrambling code type, and DMRS port information.
7. The method of claim 6 , wherein the DMRS resource allocation indicator is indexed according to:
One TB
Both TB
Enabled
Enabled
Index
Message
Index
Message
0
Rank 2 pattern,
0
Rank 2 pattern,
DMRS port 0
DMRS port 0, 1
with SC0
with SC0
allocated
allocated
1
Rank 2 pattern,
1
Rank 4 pattern,
DMRS port 1
DMRS port 0, 1,
with SC0
2 with SC0
allocated
allocated
2
Rank 2 pattern,
2
Rank 2 pattern,
DMRS port 0
DMRS port 0, 1
with SC1
with SC1
allocated
allocated
3
Rank 2 pattern,
3
Rank 4 pattern,
DMRS port 1
DMRS port 0, 1,
with SC1
2, 3 with SC0
allocated
allocated
4
Rank 2 pattern,
4
Rank 8 pattern,
DMRS port 0, 1
DMRS port 0, 1,
with SC0
2, 3, 4 with SC0
allocated
allocated
5
Rank 2 pattern,
5
Rank 8 pattern,
DMRS port 0, 1
DMRS port 0, 1,
with SC1
2, 3, 4, 5 with
allocated
SC0 allocated
6
Rank 4 pattern,
6
Rank 8 pattern,
DMRS port 0, 1,
DMRS port 0, 1,
2 with SC0
2, 3, 4, 5, 6 with
allocated
SC0 allocated
7
Rank 4 pattern,
7
Rank 8 pattern,
DMRS port 0, 1,
DMRS port 0, 1,
2, 3 with SC0
2, 3, 4, 5, 6, 7
allocated
with SC0
allocated.
8. The method of claim 6 , wherein the terminal is allocated resources in a unit of one of a localized or distributed Resource Block (RB) group, a localized RB, and a localized RB group.
9. The method of claim 6 , wherein the DCI further includes at least one of resource allocation information, data format information, and indicator for use of entire control information included in a last DCI transmitted to the terminal.
10. The method of claim 6 , further comprising acquiring Hybrid Automatic Repeat Request (HARQ) type indication information from the base station by using one of the DCI and higher layer signaling.
11. A base station for transmitting Downlink Control Information (DCI) in a wireless communication system, the base station comprising:
a control unit that generates DCI including at least one of a data resource allocation indicator, a data format indicator for at least one Transport Block (TB), and a Demodulation Reference Signal (DMRS) resource allocation indicator corresponding to the at least one TB; and
a radio frequency unit that sends the DCI to a terminal,
wherein the DMRS resource allocation indicator includes a rank pattern for the at least one TB, an allocated scrambling code type, and DMRS port information.
12. The base station of claim 11 , wherein the DMRS resource allocation indicator is indexed according to:
One TB
Both TB
Enabled
Enabled
Index
Message
Index
Message
0
Rank 2 pattern,
0
Rank 2 pattern,
DMRS port 0
DMRS port 0, 1
with SC0
with SC0
allocated
allocated
1
Rank 2 pattern,
1
Rank 4 pattern,
DMRS port 1
DMRS port 0, 1,
with SC0
2 with SC0
allocated
allocated
2
Rank 2 pattern,
2
Rank 2 pattern,
DMRS port 0
DMRS port 0, 1
with SC1
with SC1
allocated
allocated
3
Rank 2 pattern,
3
Rank 4 pattern,
DMRS port 1
DMRS port 0, 1,
with SC1
2, 3 with SC0
allocated
allocated
4
Rank 2 pattern,
4
Rank 8 pattern,
DMRS port 0, 1
DMRS port 0, 1,
with SC0
2, 3, 4 with SC0
allocated
allocated
5
Rank 2 pattern,
5
Rank 8 pattern,
DMRS port 0, 1
DMRS port 0, 1,
with SC1
2, 3, 4, 5 with
allocated
SC0 allocated
6
Rank 4 pattern,
6
Rank 8 pattern,
DMRS port 0, 1,
DMRS port 0, 1,
2 with SC0
2, 3, 4, 5, 6 with
allocated
SC0 allocated
7
Rank 4 pattern,
7
Rank 8 pattern,
DMRS port 0, 1,
DMRS port 0, 1,
2, 3 with SC0
2, 3, 4, 5, 6, 7
allocated
with SC0
allocated.
13. The base station of claim 11 , wherein the control unit allocates resources to the terminal in a unit of one of a localized or distributed Resource Block (RB) group, a localized RB, and a localized RB group.
14. The base station of claim 11 , wherein the DCI further comprises at least one of:
resource allocation information;
data format information; and
an indicator for using entire control information included in a last DCI transmitted to the terminal.
15. The base station of claim 11 , wherein the control unit provides Hybrid Automatic Repeat Request (HARQ) type indication information by using one of the DCI and higher layer signaling.
16. A terminal for receiving and processing Downlink Control Information (DCI) in a wireless communication system, the terminal comprising:
a radio frequency unit that receives DCI transmitted from a base station, the DCI including at least one of a data resource allocation indicator, a data format indicator for at least one Transport Block (TB), and a Demodulation Reference Signal (DMRS) resource allocation indicator corresponding to the at least one TB; and
a control unit that processes the DCI,
wherein the DMRS resource allocation indicator includes a rank pattern for the at least one TB, an allocated scrambling code type, and DMRS port information.
17. The terminal of claim 16 , wherein the DMRS resource allocation indicator is indexed according to:
One TB
Both TB
Enabled
Enabled
Index
Message
Index
Message
0
Rank 2 pattern,
0
Rank 2 pattern,
DMRS port 0
DMRS port 0, 1
with SC0
with SC0
allocated
allocated
1
Rank 2 pattern,
1
Rank 4 pattern,
DMRS port 1
DMRS port 0, 1,
with SC0
2 with SC0
allocated
allocated
2
Rank 2 pattern,
2
Rank 2 pattern,
DMRS port 0
DMRS port 0, 1
with SC1
with SC1
allocated
allocated
3
Rank 2 pattern,
3
Rank 4 pattern,
DMRS port 1
DMRS port 0, 1,
with SC1
2, 3 with SC0
allocated
allocated
4
Rank 2 pattern,
4
Rank 8 pattern,
DMRS port 0, 1
DMRS port 0, 1,
with SC0
2, 3, 4 with SC0
allocated
allocated
5
Rank 2 pattern,
5
Rank 8 pattern,
DMRS port 0, 1
DMRS port 0, 1,
with SC1
2, 3, 4, 5 with
allocated
SC0 allocated
6
Rank 4 pattern,
6
Rank 8 pattern,
DMRS port 0, 1,
DMRS port 0, 1,
2 with SC0
2, 3, 4, 5, 6 with
allocated
SC0 allocated
7
Rank 4 pattern,
7
Rank 8 pattern,
DMRS port 0, 1,
DMRS port 0, 1,
2, 3 with SC0
2, 3, 4, 5, 6, 7
allocated
with SC0
allocated.
18. The terminal of claim 16 , wherein the terminal is allocated resources in a unit of one of a localized or distributed Resource Block (RB) group, a localized RB, and a localized RB group.
19. The terminal of claim 16 , wherein the control information further comprises at least one of:
resource allocation information;
data format information; and
an indicator for using entire control information included in a last DCI transmitted to the terminal.
20. The terminal of claim 16 , wherein the control unit acquires Hybrid Automatic Repeat Request (HARQ) type indication information from the base station by using one of the DCI and higher layer signaling.