Method and apparatus for wideband operation in NR communication system

1. A wireless user device comprising:

an antenna;

a transceiver;

a processor; and

memory storing instructions that, when executed by the processor, cause the wireless user device to:

receive, among a plurality of synchronization signal (SS) blocks, a first SS block, wherein the first SS block comprises a first synchronization signal and a first physical broadcast channel (PBCH), and wherein the first PBCH indicates a value associated with a first subcarrier offset between the first SS block and a first resource block (RB) grid;

determine, based on the value associated with the first subcarrier offset and a frequency location of the first SS block, a frequency location of the first RB grid; and

decode, based on the determined frequency location of the first RB grid, one or more of: a reference signal, a control channel, or a data channel,

wherein the plurality of SS blocks comprise the first SS block and a second SS block,

wherein the second SS block comprises a second synchronization signal and a second PBCH,

wherein the second PBCH indicates a value associated with a second subcarrier offset between the second SS block and a second RB grid, and

wherein a distance between the first SS block and a center frequency of a carrier is different from a distance between the second SS block and the center frequency of the carrier.

2. The wireless user device of claim 1 , wherein the instructions, when executed by the processor, cause the wireless user device to determine, based on the first subcarrier offset, frequency information of a physical resource block (PRB),

wherein a frequency bandwidth of the first SS block corresponds to total frequency bandwidths of a plurality of physical resource blocks (PRBs), and wherein a quantity of the plurality of PRBs is an even number.

3. The wireless user device of claim 1 , wherein the instructions, when executed by the processor, cause the wireless user device to:

determine, based on the first RB grid, a physical resource block (PRB) index; and

determine, based on the PRB index, one or more resources associated with the one or more of the reference signal, the control channel, or the data channel.

4. The wireless user device of claim 1 , wherein the first subcarrier offset is represented by a quantity of subcarriers, and

wherein the value associated with the first subcarrier offset comprises one of 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, or 11.

5. The wireless user device of claim 4 , wherein the one of 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, or 11 is indicated by a 4-bit value associated with the quantity of subcarriers.

6. The wireless user device of claim 1 , wherein the first subcarrier offset indicates an offset between the frequency location of the first SS block and a frequency location of a physical resource block (PRB), and

wherein the frequency location of the PRB is associated with a boundary of the PRB.

7. The wireless user device of claim 1 , wherein the frequency location of the first SS block is associated with a synchronization raster.

8. The wireless user device of claim 7 , wherein the synchronization raster is a nominal synchronization raster.

9. The wireless user device of claim 1 , wherein the instructions, when executed by the processor, cause the wireless user device to:

detect, based on a synchronization raster, the first synchronization signal and the first PBCH; and

retrieve, from decoding of the first PBCH, master information block (MIB) information to obtain the value associated with the first subcarrier offset.

10. The wireless user device of claim 1 , wherein the first RB grid is determined based on a first subcarrier spacing, and wherein the second RB grid is determined based on a second subcarrier spacing different from the first subcarrier spacing.

11. The wireless user device of claim 1 , wherein the instructions, when executed by the processor, cause the wireless user device to determine, based on a plurality of synchronization rasters in a frequency band, a frequency of the center of the first SS block.

12. The wireless user device of claim 1 , wherein the plurality of SS blocks are located in different frequency bands.

13. A wireless user device comprising:

an antenna to transmit and receive one or more wireless signals;

a processor; and

memory storing instructions that, when executed by the processor, cause the wireless user device to:

receive, via a first frequency band, a first synchronization signal (SS) block of a plurality of SS blocks, wherein the first SS block comprises a first synchronization signal and a first physical broadcast channel (PBCH), and wherein the first PBCH indicates a value associated with a first subcarrier offset between the first SS block and a first resource block (RB) grid;

receive, via a second frequency band different from the first frequency band, a second SS block of the plurality of SS blocks, wherein the second SS block comprises a second synchronization signal and a second PBCH, and wherein the second PBCH indicates a value associated with a second subcarrier offset between the second SS block and a second RB grid;

decode, based on a frequency location of the first RB grid, one or more of: a first reference signal, a first control channel, or a first data channel, wherein the frequency location of the first RB grid is determined based on:

the value associated with the first subcarrier offset; and

a frequency location of the first SS block; and

decode, based on a frequency location of the second RB grid, one or more of: a second reference signal, a second control channel, or a second data channel, wherein the frequency location of the second RB grid is determined based on:

the value associated with the second subcarrier offset; and

a frequency location of the second SS block.

14. The wireless user device of claim 13 , wherein a distance between the first SS block and a center frequency of a carrier is different from a distance between the second SS block and the center frequency of the carrier.

15. The wireless user device of claim 13 , wherein the first frequency band is associated with a first subcarrier spacing, and

wherein the second frequency band is associated with a second subcarrier spacing different from the first subcarrier spacing.

16. The wireless user device of claim 13 , wherein the first frequency band is associated with a first SS burst transmission period, and

wherein the second frequency band is associated with a second SS burst transmission period different from the first SS burst transmission period.

17. The wireless user device of claim 13 , wherein the instructions, when executed by the processor, cause the wireless user device to determine, based on the first subcarrier offset, frequency information of a physical resource block (PRB),

wherein a frequency bandwidth of the first SS block corresponds to total frequency bandwidths of a plurality of physical resource blocks (PRBs), and wherein a quantity of the plurality of PRBs is an even number.

18. The wireless user device of claim 13 , wherein the instructions, when executed by the processor, cause the wireless user device to:

determine, based on the first RB grid, a physical resource block (PRB) index; and

determine, based on the PRB index, one or more resources associated with the one or more of: the first reference signal, the first control channel, or the first data channel.

19. The wireless user device of claim 13 , wherein the first subcarrier offset is represented by a quantity of subcarriers, and

wherein the value associated with the first subcarrier offset comprises one of 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, or 11.

20. The wireless user device of claim 19 , wherein the one of 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, or 11 is indicated by a 4-bit value associated with the quantity of subcarriers.

21. The wireless user device of claim 13 , wherein the first subcarrier offset indicates an offset between the frequency location of the first SS block and a frequency location of a physical resource block (PRB), and

wherein the frequency location of the PRB is associated with a boundary of the PRB.

22. The wireless user device of claim 13 , wherein the frequency location of the first SS block is associated with a first synchronization raster, and

wherein the frequency location of the second SS block is associated with a second synchronization raster.

23. The wireless user device of claim 22 , wherein the first synchronization raster is a nominal synchronization raster.

24. The wireless user device of claim 13 , wherein the instructions, when executed by the processor, cause the wireless user device to:

detect, based on a synchronization raster, the first synchronization signal and the first PBCH; and

retrieve, from decoding of the first PBCH, master information block (MIB) information to obtain the value associated with the first subcarrier offset.

25. The wireless user device of claim 13 , wherein master information block (MIB) of the first PBCH comprises:

information associated with a system frame number; and

the value associated with the first subcarrier offset.

26. The wireless user device of claim 13 , wherein the first RB grid is determined based on a first subcarrier spacing, and wherein the second RB grid is determined based on a second subcarrier spacing different from the first subcarrier spacing.

27. The wireless user device of claim 13 , wherein the instructions, when executed by the processor, cause the wireless user device to determine, based on a plurality of synchronization rasters in a frequency band, a frequency of the center of the first SS block.

28. A method performed by a wireless user device, the method comprising:

receiving, via a first frequency band, a first synchronization signal (SS) block of a plurality of SS blocks, wherein the first SS block comprises a first synchronization signal and a first physical broadcast channel (PBCH), and wherein the first PBCH indicates a value associated with a first subcarrier offset between the first SS block and a first resource block (RB) grid;

receiving, via a second frequency band different from the first frequency band, a second SS block of the plurality of SS blocks, wherein the second SS block comprises a second synchronization signal and a second PBCH, and wherein the second PBCH indicates a value associated with a second subcarrier offset between the second SS block and a second RB grid;

decoding, based on a frequency location of the first RB grid, one or more of: a first reference signal, a first control channel, or a first data channel, wherein the frequency location of the first RB grid is determined based on:

the value associated with the first subcarrier offset; and

a frequency location of the first SS block; and

decoding, based on a frequency location of the second RB grid, one or more of: a second reference signal, a second control channel, or a second data channel, wherein the frequency location of the second RB grid is determined based on:

the value associated with the second subcarrier offset; and

a frequency location of the second SS block.

29. The method of claim 28 , wherein a distance between the first SS block and a center frequency of a carrier is different from a distance between the second SS block and the center frequency of the carrier.

30. The method of claim 28 , wherein the first frequency band is associated with a first subcarrier spacing, and

wherein the second frequency band is associated with a second subcarrier spacing different from the first subcarrier spacing.

31. The method of claim 28 , wherein the first frequency band is associated with a first SS burst transmission period, and

wherein the second frequency band is associated with a second SS burst transmission period different from the first SS burst transmission period.

32. The method of claim 28 , further comprising determining, based on the first subcarrier offset, frequency information of a physical resource block (PRB),

wherein a frequency bandwidth of the first SS block corresponds to total frequency bandwidths of a plurality of physical resource blocks (PRBs), and wherein a quantity of the plurality of PRBs is an even number.

33. The method of claim 28 , further comprising:

determining, based on the first RB grid, a physical resource block (PRB) index; and

determining, based on the PRB index, one or more resources associated with the one or more of: the first reference signal, the first control channel, or the first data channel.

34. The method of claim 28 , wherein the first subcarrier offset is represented by a quantity of subcarriers, and

wherein the value associated with the first subcarrier offset comprises one of 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, or 11.

35. The method of claim 34 , wherein the one of 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, or 11 is indicated by a 4-bit value associated with the quantity of subcarriers.

36. The method of claim 28 , wherein the first subcarrier offset indicates an offset between the frequency location of the first SS block and a frequency location of a physical resource block (PRB), and

wherein the frequency location of the PRB is associated with a boundary of the PRB.

37. The method of claim 28 , wherein the frequency location of the first SS block is associated with a first synchronization raster, and

wherein the frequency location of the second SS block is associated with a second synchronization raster.

38. The method of claim 37 , wherein the first synchronization raster is a nominal synchronization raster.

39. The method of claim 28 , further comprising:

detecting, based on a synchronization raster, the first synchronization signal and the first PBCH; and

retrieving, from decoding of the first PBCH, master information block (MIB) information to obtain the value associated with the first subcarrier offset.

40. The method of claim 28 , wherein master information block (MIB) of the first PBCH comprises:

information associated with a system frame number; and

the value associated with the first subcarrier offset.

41. The method of claim 28 , wherein the first RB grid is determined based on a first subcarrier spacing, and wherein the second RB grid is determined based on a second subcarrier spacing different from the first subcarrier spacing.

42. The method of claim 28 , further comprising determining, based on a plurality of synchronization rasters in a frequency band, a frequency of the center of the first SS block.