Resource allocation method in wireless communication system, data reception method on basis of same and device for same
The present invention relates to a communication technique, which is a convergence of IoT technology and 5G communication system for supporting higher data transmission rate beyond 4G system, and a system for same. The present invention can be applied to smart services (e.g., smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, retail businesses, security- and safety-related services and the like) on the basis of 5G communication technology and IoT-related technology. The present invention provides a resource allocation method by a base station comprising the steps of: comparing a transmission time interval (TTI), which is for transmitting data to a terminal, with a preconfigured transmission time interval reference value; if the transmission time interval for the data transmission is shorter than the transmission time interval reference value, determining a resource allocation type for showing frequency resources allocated for the data transmission, and generating control information on the basis of the determined resource allocation type.
1. A method by a base station in a wireless communication system, the method comprising:
identifying a transmission time interval (TTI) length for transmitting data to a terminal, the TTI length being a first TTI length or a second TTI length;
identifying a resource allocation type for notifying of a frequency resource allocated to transmit the data, the resource allocation type being associated with a resource block group (RBG) bitmap indicating a resource block assignment; and
transmitting, to the terminal, control information including resource block assignment information based on the resource allocation type and the TTI length; and
transmitting, to the terminal, the data according to the resource block assignment information,
wherein the resource block assignment information is associated with a resource block group (RBG) size being a number of resource blocks (RBs) included in one RBG,
wherein the RBG size is identified based on one of a first table for the first TTI length or a second table for the second TTI length, according to the identified TTI length, the first TTI length being smaller than the second TTI length,
wherein the first table is defined based on a plurality of system bandwidths and corresponding RBG sizes for the first TTI length, and the second table is defined based on the plurality of system bandwidths and corresponding RBG sizes for the second TTI length, and
wherein the first table for the first TTI length is defined based on RBG sizes smaller than 4 for first system bandwidths and RBG sizes greater than 4 for second system bandwidths.
2. The method of claim 1 , wherein the resource allocation type is determined among candidates of the resource allocation type determined corresponding to a control information format.
3. The method of claim 1 , wherein an RBG size corresponding to at least one system bandwidth of the first table for the first TTI length is larger than an RBG size corresponding to the at least on system bandwidth of the second table for the second TTI length.
4. The method of claim 1 , wherein the resource block assignment information includes a bitmap indicating RBGs.
5. A method by a terminal in a wireless communication system, the method comprising:
identifying a transmission time interval (TTI) length for receiving data from the base station, the TTI length being a first TTI length or a second TTI length;
receiving, from a base station, control information including resource block assignment information;
identifying a resource allocation type for a frequency resource allocated to receive the data, the resource allocation type being associated with a resource block group (RBG) bitmap indicating a resource block assignment; and
receiving, from the base station, the data based on the resource block assignment information,
wherein the resource block assignment information is associated with a resource block group (RBG) size being a number of resource blocks (RBs) included in one RBG,
wherein the RBG size is identified based on one of a first table for the first TTI length or a second table for the second TTI length, according to the identified TTI length, the first TTI length being smaller than the second TTI length,
wherein the first table is defined based on a plurality of system bandwidths and corresponding RBG sizes for the first TTI length, and the second table is defined based on the plurality of system bandwidths and corresponding RBG sizes for the second TTI length, and
wherein the first table for the first TTI length is defined based on RBG sizes smaller than 4 for first system bandwidths and RBG sizes greater than 4 for second system bandwidths.
6. The method of claim 5 , wherein the resource allocation type is determined among candidates of the resource allocation type determined corresponding to a control information format.
7. The method of claim 5 , wherein an RBG size corresponding to at least one system bandwidth of the first table for the first TTI length is larger than an RBG size corresponding to the at least on system bandwidth of the second table for the second TTI length.
8. The method of claim 5 , wherein the resource block assignment information includes a bitmap indicating RBGs.
9. A base station in a wireless communication system, the base station comprising:
a transceiver configured to transmit/receive data to/from a terminal; and
a controller configured to:
identify a transmission time interval (TTI) length for transmitting data to the terminal, the TTI length being a first TTI length or a second TTI length;
identify a resource allocation type for notifying of a frequency resource allocated to transmit the data, the resource allocation type being associated with a resource block group (RBG) bitmap indicating a resource block assignment;
transmit, to the terminal, control information including resource block assignment information based on the resource allocation type and the TTI length, and
transmit, to the terminal, the data according to the resource block assignment information,
wherein the resource block assignment information is associated with a resource block group (RBG) size being a number of resource blocks (RBs) included in one RBG,
wherein the RBG size is identified based on one of a first table for the first TTI length or a second table for the second TTI length, according to the identified TTI length, the first TTI length being smaller than the second TTI length,
wherein the first table is defined based on a plurality of system bandwidths and corresponding RBG sizes for the first TTI length, and the second table is defined based on the plurality of system bandwidths and corresponding RBG sizes for the second TTI length, and
wherein the first table for the first TTI length is defined based on RBG sizes smaller than 4 for first system bandwidths and RBG sizes greater than 4 for second system bandwidths.
10. The base station of claim 9 , wherein the resource allocation type is determined among candidates of the resource allocation type determined corresponding to a control information format.
11. The base station of claim 9 , wherein an RBG size corresponding to at least one system bandwidth of the first table for the first TTI length is larger than an RBG size corresponding to the at least on system bandwidth of the second table for the second TTI length.
12. The base station of claim 9 , wherein the resource block assignment information includes a bitmap indicating RBGs.
13. A terminal in a wireless communication system, the terminal comprising:
a transceiver configured to receive control information or data from a base station; and
a controller configured to:
identify a transmission time interval (TTI) length for receiving data from the base station, the TTI length being a first TTI length or a second TTI length;
receive, from the base station, control information including resource block assignment information;
identify a resource allocation type for a frequency resource allocated to receive the data, the resource allocation type being associated with RBG bitmap indicating a resource block assignment; and
to receive, from the base station, the data based on the resource block assignment information,
wherein the resource block assignment information is associated with a resource block group (RBG) size being a number of resource blocks (RBs) included in one RBG,
wherein the RBG size is identified based on one of a first table for the first TTI length or a second table for the second TTI length, according to the identified TTI length, the first TTI length is smaller than the second TTI length,
wherein the first table is defined based on a plurality of system bandwidths and corresponding RBG sizes for the first TTI length, and the second table is defined based on the plurality of system bandwidths and corresponding RBG sizes for the second TTI length, and
wherein the first table for the first TTI length is defined based on RBG sizes smaller than 4 for first system bandwidths and RBG sizes greater than 4 for second system bandwidths.
14. The terminal of claim 13 , wherein the resource allocation type is determined among candidates of the resource allocation type determined corresponding to a control information format.
15. The terminal of claim 13 , wherein an RBG size corresponding to at least one system bandwidth of the first table for the first TTI length is larger than an RBG size corresponding to the at least on system bandwidth of the second table for the second TTI length.