Method and apparatus for configuring resource block structure for NR in wireless communication system
A method and apparatus for forming a resource block (RB) structure in a wireless communication system is provided. A user equipment (UE) receives a downlink (DL) signal via first physical resource blocks (PRBs), which are indexed by a network from a center of a band or from a center of a carrier, from the network. And, the UE transmits an uplink (UL) signal via second PRBs, which are aligned with the first PRBs according to synchronization signal (SS) blocks, to the network. Accordingly, a global PRB indexing and a local PRB indexing can be aligned with each other.
1. A method for forming a resource block (RB) structure by a user equipment (UE) in a wireless communication system, the method comprising:
receiving a downlink (DL) signal via first physical resource blocks (PRBs), which are indexed by a network from a center of a band or from a center of a carrier, from the network; and
transmitting an uplink (UL) signal via second PRBs, which are aligned with the first PRBs according to synchronization signal (SS) blocks, to the network,
wherein an offset is indicated in the SS blocks for remaining system information (RMSI), which uses different numerology from the SS blocks.
2. The method of claim 1 , wherein the band is partitioned into a plurality of carriers, and
wherein each of the plurality of carriers has a maximum system bandwidth.
3. The method of claim 1 , wherein the band is partitioned into a plurality of channels having a same bandwidth.
4. The method of claim 1 , wherein each of the plurality of channels is defined as a minimum resource block that the network intends to support based on a largest subcarrier spacing that the network can support.
5. The method of claim 1 , wherein the first PRBs are indexed per numerology.
6. The method of claim 1 , wherein the first PRBs are indexed by including or excluding a guard band.
7. The method of claim 1 , wherein a bandwidth of the carrier is represented as a size of resource block multiplied by N, and
wherein the size of resource block is determined based on one of a reference subcarrier spacing, a largest subcarrier spacing, or a smallest subcarrier spacing, that the network intends to support.
8. The method of claim 1 , wherein a direct current (DC) subcarrier is placed at edge of the first PRBs based on a largest subcarrier spacing supported by the network.
9. The method of claim 1 , wherein the second PRBs are aligned with the first PRBs according to shift by the offset.
10. The method of claim 1 , wherein the offset corresponds to an offset between the center of the carrier and a center of the SS blocks.
11. The method of claim 1 , wherein the offset corresponds to an offset between a lowest RB location of the RMSI and a lowest RB location of the SS blocks.
12. A user equipment (UE) in a wireless communication system, the UE comprising:
a memory;
a transceiver; and
a processor, coupled to the memory and the transceiver, that:
controls the transceiver to receive a downlink (DL) signal via first physical resource blocks (PRBs), which are indexed by a network from a center of a band or from a center of a carrier, from the network, and
controls the transceiver to transmit an uplink (UL) signal via second PRBs, which are aligned with the first PRBs according to synchronization signal (SS) blocks, to the network,
wherein an offset is indicated in the SS blocks for remaining system information (RMSI), which uses different numerology from the SS blocks.