Method for transmitting and receiving uplink signal in wireless communication system supporting non-licensed band, and apparatus for supporting same
A method for transmitting and receiving an uplink signal between a terminal and a base station in a wireless communication system which supports a non-licensed band, and an apparatus for supporting the same are disclosed. Specifically, a specific method in which a base station allocates transmission resources in a non-licensed band to a terminal and the terminal transmits an uplink signal using the allocated transmission resources, and an apparatus for supporting the same are disclosed.
1. A method of receiving an uplink signal, which is received by a base station from a user equipment in a wireless communication system, the method comprising:
transmitting control information for allocating an uplink resource to the user equipment; and
receiving the uplink signal from the user equipment through the uplink resource based on the control information,
wherein the control information informs allocated L interlaces for the uplink signal among N interlaces included in an entire system band, wherein each of the L and the N is a natural number,
wherein, based on N=5 interlaces included in the entire system band: the allocated L interlaces are determined based on 5 bits of a bitmap included in the control information, and
wherein, based on N=10 interlaces included in the entire system band:
(i) the allocated L interlaces are determined based on 6 bits of a Resource Indication Value (RIV) included in the control information,
(ii) based on the RIV being equal to one of 0 to 54: the allocated L interlaces have contiguous interlace indices, and the RIV corresponds to a starting interlace index and a number of the contiguous interlace indices, and
(iii) based on the RIV being equal to or larger than 55: the allocated L interlaces have non-contiguous interlace indices, and the allocated L interlaces have indices equal to one of index sets (0, 5), (1, 6), (2, 7), (3, 8), (4, 9), (1, 2, 3, 4, 6, 7, 8, 9), and (2, 3, 4, 7, 8, 9).
2. The method of claim 1 , wherein one interlace comprises resource blocks (RBs) separated from each other with a prescribed frequency interval.
3. The method of claim 2 , wherein the prescribed frequency interval is 10 RBs.
4. The method of claim 3 , wherein 10 interlaces included in the entire system band are indexed by interlaces 0 to 9 in a frequency domain order.
5. The method of claim 1 , wherein the entire system band is 100 resource blocks (RBs).
6. A method of transmitting an uplink signal, which is transmitted by a user equipment to a base station in a wireless communication system, the method comprising:
receiving control information for allocating an uplink resource from the base station; and
transmitting the uplink signal through the uplink resource indicated by the control information,
wherein the control information informs allocated L interlaces for the uplink signal among N interlaces included in an entire system band, wherein each of the L and the N is a natural number,
wherein, based on N=5 interlaces included in the entire system band: the allocated L interlaces are determined based on 5 bits of a bitmap included in the control information, and
wherein, based on N=10 interlaces included in the entire system band:
(i) the allocated L interlaces are determined based on 6 bits of a Resource Indication Value (RIV) included in the control information,
(ii) based on the RIV being equal to one of 0 to 54: the allocated L interlaces have contiguous interlace indices, and the RIV corresponds to a starting interlace index and a number of the contiguous interlace indices, and
(iii) based on the RIV being equal to or larger than 55: the allocated L interlaces have non-contiguous interlace indices, and the allocated L interlaces have indices equal to one of index sets (0, 5), (1, 6), (2, 7), (3, 8), (4, 9), (1, 2, 3, 4, 6, 7, 8, 9), and (2, 3, 4, 7, 8, 9).
7. The method of claim 6 , wherein one interlace comprises resource blocks (RBs) separated from each other with a prescribed frequency interval.
8. The method of claim 7 , wherein the prescribed frequency interval is 10 RBs.
9. The method of claim 8 , wherein 10 interlaces contained in the entire system band are indexed by interlaces 0 to 9 in a frequency domain order.
10. The method of claim 6 , wherein the entire system band is 100 resource blocks (RBs).
11. A base station configured to receive an uplink signal from a user equipment in a wireless communication system, the base station comprising:
a receiver;
a transmitter; and
a processor configured to operate in a manner of being connected with the receiver and the transmitter,
wherein the processor is configured to:
transmit control information for allocating an uplink resource to the user equipment; and
receive the uplink signal from the user equipment through the uplink resource indicated by the control information,
wherein the control information informs allocated L interlaces for the uplink signal among N interlaces included in an entire system band, wherein each of the L and the N is a natural number,
wherein, based on N=5 interlaces included in the entire system band: the allocated L interlaces are determined based on 5 bits of a bitmap included in the control information, and
wherein, based on N=10 interlaces included in the entire system band:
(i) the allocated L interlaces are determined based on 6 bits of a Resource Indication Value (RIV) included in the control information,
(ii) based on the RIV being equal to one of 0 to 54: the allocated L interlaces have contiguous interlace indices, and the RIV corresponds to a starting interlace index and a number of the contiguous interlace indices, and
(iii) based on the RIV being equal to or larger than 55: the allocated L interlaces have non-contiguous interlace indices, and the allocated L interlaces have indices equal to one of index sets (0, 5), (1, 6), (2, 7), (3, 8), (4, 9), (1, 2, 3, 4, 6, 7, 8, 9), and (2, 3, 4, 7, 8, 9).
12. A user equipment configured to transmit an uplink signal to a base station in a wireless communication system, the user equipment comprising:
a receiver;
a transmitter; and
a processor configured to operation in a manner of being connected with the receiver and the transmitter,
wherein the processor is configured to:
receive control information for allocating an uplink resource from the base station; and
transmit the uplink signal through the uplink resource indicated by the control information,
wherein the control information informs allocated L interlaces for the uplink signal among N interlaces included in an entire system band, wherein each of the L and the N is a natural number,
wherein, based on N=5 interlaces included in the entire system band: the allocated L interlaces are determined based on 5 bits of a bitmap included in the control information, and
wherein, based on N=10 interlaces included in the entire system band:
(i) the allocated L interlaces are determined based on 6 bits of a Resource Indication Value (RIV) included in the control information,
(ii) based on the RIV being equal to one of 0 to 54: the allocated L interlaces have contiguous interlace indices, and the RIV corresponds to a starting interlace index and a number of the contiguous interlace indices, and
(iii) based on the RIV being equal to or larger than 55: the allocated L interlaces have non-contiguous interlace indices, and the allocated L interlaces have indices equal to one of index sets (0, 5), (1, 6), (2, 7), (3, 8), (4, 9), (1, 2, 3, 4, 6, 7, 8, 9), and (2, 3, 4, 7, 8, 9).