Terminal receiving resource block allocation and method therefor
In a wireless communication base station device, a modulation unit carries out modulation processing for Dch data after coding to generate a Dch data symbol. A modulation unit carries out modulation processing for Lch data after coding to generate an Lch data symbol. An allocation unit allocates the Dch data symbol and Lch data symbol to each sub-carrier composing an OFDM symbol and outputs the allocated sub-carrier to a multiplex unit. In this case, the allocation unit allocates the Dch data symbol to a plurality of resource blocks where one Dch is arranged at an interval equal to integral multiples of the number of resource blocks composing a resource block group.
1. A communication device, comprising,
circuitry, which, in operation, allocates resource blocks, each of which is comprised of consecutive subcarriers in a frequency domain, to a terminal in one of a plurality of resource allocations including:
a resource allocation allocating Distributed Virtual Resource Blocks (DVRBs), a pair of DVRBs assigned by a single resource block number being mapped to Physical Resource Blocks (PRBs) with a gap in a frequency domain, the gap being an integer multiple of a Resource Block Group (RBG) size defined as a number of one or more consecutive PRBs comprising one RBG, the gap and the RBG size being associated with a system bandwidth; and
a resource allocation allocating one or more RBGs; and
a transmitter, which, in operation, transmits data using the allocated resource blocks to the terminal.
2. The communication device according to claim 1 wherein the system bandwidth is a configured system bandwidth, and the gap and the RBG size are based on the configured system bandwidth.
3. The communication device according to claim 1 wherein the RBG size is greater than one, each allocated RBG having more than one PRB.
4. The communication device according to claim 1 wherein the pair of DVRBs assigned by the single resource block number are mapped to PRBs that are different in a time domain.
5. The communication device according to claim 1 wherein the transmitter, in operation, transmits assignment information indicating the allocated resource blocks to the terminal.
6. The communication device according to claim 5 wherein DVRBs with consecutive resource block numbers are allocated to the terminal, and the assignment information is based on a starting resource block number and a number of allocated DVRBs with consecutive resource block numbers.
7. The communication device according to claim 5 wherein the assignment information includes a bitmap indicating RBGs allocated to the terminal.
8. The communication device according to claim 1 wherein Localized Virtual Resource Blocks (LVRBs), which are mapped to PRBs, are allocated to the terminal in units of RBGs.
9. The communication device according to claim 1 wherein DVRBs with non-consecutive DVRB numbers are mapped to PRBs, which are adjacent to each other in the frequency domain.
10. The communication device according to claim 1 wherein the gap is a largest gap which is an integer multiple of the RBG size and which is equal to or less than Nrb/Nd, where Nrb is the system bandwidth expressed as a total number of the PRBs, and Nd is a total number of DVRBs mapped to PRBs in a same frequency of a subframe.
11. The communication device according to claim 1 wherein the gap is a largest gap which is an integer multiple of the RBG size and which is a largest available gap based on the system bandwidth.
12. A communication device, comprising:
circuitry, which, in operation, allocates Distributed Virtual Resource Blocks (DVRBs) to a terminal, a pair of DVRBs assigned by a single resource block number being mapped to Physical Resource Blocks (PRBs) with a gap in a frequency domain, each of PRBs being comprised of consecutive subcarriers in the frequency domain, the gap being an integer multiple of a Resource Block Group (RBG) size defined as a number of one or more consecutive PRBs comprising one RBG, and the gap and the RBG size being associated with a system bandwidth; and
a transmitter, which, in operation, transmits data using the allocated resource blocks to the terminal.
13. The communication device according to claim 12 wherein the system bandwidth is a configured system bandwidth, and the gap and the RBG size are based on the configured system bandwidth.
14. The communication device according to claim 12 wherein the RBG size is greater than one, each allocated RBG having more than one PRB.
15. The communication device according to claim 12 wherein the pair of DVRBs assigned by the single resource block number are mapped to PRBs that are different in a time domain.
16. The communication device according to claim 12 wherein the transmitter, in operation, transmits assignment information indicating the allocated resource blocks to the terminal.
17. The communication device according to claim 16 wherein DVRBs with consecutive resource block numbers are allocated to the terminal, and the assignment information is based on a starting resource block number and a number of allocated DVRBs with consecutive resource block numbers.
18. The communication device according to claim 12 wherein DVRBs with non-consecutive DVRB numbers are mapped to PRBs, which are adjacent to each other in the frequency domain.
19. The communication device according to claim 1 wherein the gap is a largest gap which is an integer multiple of the RBG size and which is equal to or less than Nrb/Nd, where Nrb is the system bandwidth expressed as a total number of the PRBs, and Nd is a total number of DVRBs mapped to PRBs in a same frequency of a subframe.
20. The communication device according to claim 1 wherein the gap is a largest gap which is an integer multiple of the RBG size and which is a largest available gap based on the system bandwidth.
21. A method, comprising,
allocating resource blocks, each of which is comprised of consecutive subcarriers in a frequency domain, to a terminal in one of a plurality of resource allocations including:
a resource allocation allocating Distributed Virtual Resource Blocks (DVRBs), a pair of DVRBs assigned by a single resource block number being mapped to Physical Resource Blocks (PRBs) with a gap in a frequency domain, the gap being an integer multiple of a Resource Block Group (RBG) size defined as a number of one or more consecutive PRBs comprising one RBG, the gap and the RBG size being associated with a system bandwidth; and
a resource allocation allocating one or more RBGs; and
transmitting data using the allocated resource blocks to the terminal.
22. A method, comprising:
allocating Distributed Virtual Resource Blocks (DVRBs) to a terminal, a pair of DVRBs assigned by a single resource block number being mapped to Physical Resource Blocks (PRBs) with a gap in a frequency domain, each of PRBs being comprised of consecutive subcarriers in the frequency domain, the gap being an integer multiple of a Resource Block Group (RBG) size defined as a number of one or more consecutive PRBs comprising one RBG, and the gap and the RBG size being associated with a system bandwidth; and
transmitting data using the allocated resource blocks to the terminal.