Method for allocating resources in wireless communication system, and apparatus using method
A method and an apparatus for allocating resources in a wireless communication system are provided. The method generates, in a bit size of first resource allocation information used to schedule a first band, second resource allocation information for scheduling a second band, and transmits the second resource allocation information through the first band.
1. A method of transmitting resource allocation information by a base station in a wireless communication system, the method comprising:
generating second resource allocation information, for scheduling a second bandwidth, in a bit size of first resource allocation information which is used for scheduling a first bandwidth; and
transmitting, to a user equipment (UE), the second resource allocation information through the first bandwidth,
wherein the second resource allocation information comprises information that informs a starting symbol and a length of a data channel transmitted in the second bandwidth.
2. The method of claim 1 , wherein the first bandwidth and the second bandwidth are different frequency bands.
3. The method of claim 1 , wherein a bit size of the second resource allocation information is greater than a bit size required to interpret the resource allocation information for scheduling the second bandwidth.
4. The method of claim 1 , wherein a bit size of the second resource allocation information is smaller than a bit size required to interpret the resource allocation information for scheduling the second bandwidth.
5. The method of claim 1 , wherein the second resource allocation information informs a specific row to inform both the starting symbol and the length of the data channel transmitted in the second bandwidth,
PDSCH
Row index
mapping type
K 0
S
L
n
Type B
0
4
4
n + 1
Type B
0
6
4
n + 2
Type B
0
8
4
n + 1n + 2
Type B
1
2
4
where n denotes a natural number, K0 denotes a slot offset, S denotes the starting symbol of the data channel, and L denotes the length of the data channel.
6. The method of claim 5 , wherein Type B informs that a demodulation reference signal (DM-RS) is allocated to a first symbol among resources allocated to the data channel.
7. The method of claim 1 , wherein the second resource allocation information informs a specific row so as to inform a starting symbol and a length of a data channel transmitted in the second bandwidth,
PDSCH
Row index
mapping type
K 0
S
L
m
Type A
0
2
6
m + 1
Type A
0
2
6
m + 2
Type B
0
4
4
m + 3
Type B
0
6
4
m + 4
Type B
0
8
4
m + 5
Type B
0
10
4
where m denotes a natural number, K0 denotes a slot offset, S denotes the starting symbol of the data channel, and L denotes the length.
8. The method of claim 7 , wherein the Type A informs that a DM-RS is allocated to a symbol fixed with reference to start of a slot, and the Type B informs that a DM-RS is informed to a first symbol among resources allocated to the data channel.
9. A base station configured to transmit resource allocation information, the base station comprising:
a transceiver configured to transmit and receive radio signals; and
a processor configured to operate in conjunction with the transceiver,
wherein the processor is further configured to:
generate, in a bit size of first resource allocation information used to schedule a first bandwidth, second resource allocation information for scheduling a second bandwidth; and
transmit, to a user equipment (UE), the second resource allocation information through the first bandwidth,
wherein the second resource allocation information comprises information that informs a starting symbol and a length of a data channel transmitted in the second bandwidth.
10. The base station of claim 9 , wherein a bit size of the second resource allocation information is smaller than a bit size required to interpret the resource allocation information for scheduling the second bandwidth.
11. The base station of claim 9 , wherein the first bandwidth and the second bandwidth are different frequency bands.
12. The base station of claim 9 , wherein a bit size of the second resource allocation information is greater than a bit size required to interpret the resource allocation information for scheduling the second bandwidth.
13. The base station of claim 9 , wherein the second resource allocation information informs a specific row to inform a starting symbol and a length of a data channel transmitted in the second bandwidth,
PDSCH
Row index
mapping type
K 0
S
L
m
Type A
0
2
6
m + 1
Type A
0
2
6
m + 2
Type B
0
4
4
m + 3
Type B
0
6
4
m + 4
Type B
0
8
4
m + 5
Type B
0
10
4
where m denotes a natural number, K0 denotes a slot offset, S denotes the starting symbol of the data channel, and L denotes the length.
14. The base station of claim 13 , wherein the Type A informs that a DM-RS is allocated to a symbol fixed with reference to start of a slot, and the Type B informs that a DM-RS is informed to a first symbol among resources allocated to the data channel.
15. The base station of claim 9 , wherein the second resource allocation information informs a specific row to inform both the starting symbol and the length of the data channel transmitted in the second bandwidth,
PDSCH
Row index
mapping type
K 0
S
L
n
Type B
0
4
4
n + 1
Type B
0
6
4
n + 2
Type B
0
8
4
n + 1n + 2
Type B
1
2
4
where n denotes a natural number, K0 denotes a slot offset, S denotes the starting symbol of the data channel, and L denotes the length of the data channel.
16. The base station of claim 15 , wherein the Type B informs that a demodulation reference signal (DM-RS) is allocated to a first symbol among resources allocated to the data channel.
17. An apparatus configured to operate in a wireless communication system, the apparatus comprising:
a processor; and
a memory coupled to the processor;
wherein the processor is configured to:
generate, in a bit size of first resource allocation information used to schedule a first bandwidth, second resource allocation information for scheduling a second bandwidth; and
transmit the second resource allocation information through the first bandwidth,
wherein the second resource allocation information comprises information that informs a starting symbol and a length of a data channel transmitted in the second bandwidth.
18. The apparatus of claim 17 , wherein the first bandwidth and the second bandwidth are different frequency bands.