Usage of synchronization signal block index in new radio
A base station may determine an SS block index associated with an SS block for transmission, and may scramble information based on at least a portion of the determined SS block index. The information may include at least one of a reference signal, data, paging information, control information, broadcast information, or a CRC associated with control information. The base station may transmit the SS block and scrambled information to a UE. A UE may receive an SS block and information scrambled based on at least a portion of an SS block index associated with the SS block. The information may include at least one of a reference signal, data, paging information, control information, broadcast information, or a CRC associated with control information. The UE may descramble the scrambled information based on the at least the portion of the SS block index.
1. A method of wireless communication at a base station, comprising:
determining a synchronization signal (SS) block index associated with an SS block, wherein the SS block index is based on an index of the SS block within an SS burst;
scrambling information based on a SS block index portion, wherein the SS block index portion comprises a portion of the determined SS block index, the SS block index portion is comprised of x least significant bits of the determined SS block index, where x is based on a maximum length of the SS burst, and the information includes broadcast information associated with control information; and
transmitting the SS block, wherein the SS Block includes the scrambled information.
2. The method of claim 1 , wherein the information includes a reference signal (RS), the RS comprising at least one of channel state information (CSI) RS (CSI-RS), measurement RS (MRS), demodulation RS (DMRS), or a phase-noise tracking RS (PT-RS).
3. The method of claim 2 , wherein the scrambled information comprises DMRS.
4. The method of claim 1 , wherein the control information is associated with a physical downlink control channel (PDCCH).
5. The method of claim 1 , wherein the scrambled information comprises broadcast information on a physical broadcast channel (PBCH).
6. The method of claim 1 , wherein the SS block includes at least one of a primary synchronization signal (PSS), a secondary synchronization signal (SSS), or a physical broadcast channel (PBCH).
7. The method of claim 1 , wherein x is 2 if the maximum length is 4, and x is 3 if the maximum length is 8 or 64.
8. A method of wireless communication at a user equipment (UE), comprising:
receiving a synchronization signal (SS) block, the SS block including information scrambled based on a SS block index portion, wherein a SS block index is based on an index of the SS block within an SS burst, and the SS block index portion comprises a portion of the SS block index, the SS block index portion is comprised of x least significant bits of the SS block index where x is based on a maximum length of an SS burst, and the information includes broadcast information associated with control information; and
descrambling the scrambled information based on the SS block index portion.
9. The method of claim 8 , wherein the information includes a reference signal (RS) which is at least one of channel state information (CSI) RS (CSI-RS), measurement RS (MRS), demodulation RS (DMRS), or a phase-noise tracking RS (PT-RS).
10. The method of claim 9 , wherein the scrambled information comprises DMRS.
11. The method of claim 8 , wherein the control information is associated with a physical downlink control channel (PDCCH).
12. The method of claim 8 , wherein the scrambled information comprises broadcast information on a physical broadcast channel (PBCH).
13. The method of claim 8 , wherein the SS block includes at least one of a primary synchronization signal (PSS), a secondary synchronization signal (SSS), or a physical broadcast channel (PBCH).
14. The method of claim 8 , wherein x is 2 if the maximum length is 4, and x is 3 if the maximum length is 8 or 64.
15. An apparatus for wireless communication at a base station, comprising:
a memory; and
at least one processor coupled to the memory and configured to:
determine a synchronization signal (SS) block index associated with an SS block, wherein the SS block index is based on an index of the SS block within an SS burst;
scramble information based on a SS block index portion, wherein the SS block index portion comprises a portion of the determined SS block index, the SS block index portion is comprised of x least significant bits of the determined SS block index, where x is based on a maximum length of the SS burst, and the information includes broadcast information associated with control information; and
transmit the SS block, the SS block including the scrambled information.
16. The apparatus of claim 15 , wherein the information includes a reference signal (RS) which is at least one of channel state information (CSI) RS (CSI-RS), measurement RS (MRS), demodulation RS (DMRS), or a phase-noise tracking RS (PT-RS).
17. The apparatus of claim 16 , wherein the scrambled information comprises DMRS.
18. The apparatus of claim 15 , wherein the control information is associated with a physical downlink control channel (PDCCH).
19. The apparatus of claim 15 , wherein the scrambled information comprises broadcast information on a physical broadcast channel (PBCH).
20. The apparatus of claim 19 , wherein the SS block includes at least one of a primary synchronization signal (PSS), a secondary synchronization signal (SSS), or a physical broadcast channel (PBCH).
21. The apparatus of claim 15 , wherein x is 2 if the maximum length is 4, and x is 3 if the maximum length is 8 or 64.
22. An apparatus for wireless communication at a user equipment (UE), comprising:
a memory; and
at least one processor coupled to the memory and configured to:
receive a synchronization signal (SS) block, the SS block including information scrambled based on a SS block index portion, wherein a SS block index is based on an index of the SS block within an SS burst, and the SS block index portion comprises a portion of the SS block index, the SS block index portion is comprised of x least significant bits of the SS block index, where x is based on a maximum length of an SS burst, and the information includes broadcast information associated with control information; and
descramble the scrambled information based on the SS block index portion.
23. The apparatus of claim 22 , wherein the information includes a reference signal (RS) which is at least one of channel state information (CSI) RS (CSI-RS), measurement RS (MRS), demodulation RS (DMRS), or a phase-noise tracking RS (PT-RS).
24. The apparatus of claim 23 , wherein the scrambled information comprises DMRS.
25. The apparatus of claim 22 , wherein the control information is associated with a physical downlink control channel (PDCCH).
26. The apparatus of claim 22 , wherein the scrambled information comprises broadcast information on a physical broadcast channel (PBCH).
27. The apparatus of claim 22 , wherein the SS block includes at least one of a primary synchronization signal (PSS), a secondary synchronization signal (SSS), or a physical broadcast channel (PBCH).
28. The apparatus of claim 22 , wherein x is 2 if the maximum length is 4, and x is 3 if the maximum length is 8 or 64.
29. An apparatus for wireless communication at a base station, comprising:
means for determining a synchronization signal (SS) block index associated with an SS block, wherein the SS block index is based on an index of the SS block within an SS burst;
means for scrambling information based on a SS block index portion, wherein the SS block index portion comprises a portion of the determined SS block index, the SS block index portion is comprised of x least significant bits of the determined SS block index, where x is based on a maximum length of an SS burst, and the information includes broadcast information associated with control information; and
means for transmitting the SS block, wherein the SS Block includes the scrambled information.
30. The apparatus of claim 29 , wherein the control information is associated with a physical downlink control channel (PDCCH).
31. The apparatus of claim 29 , wherein the scrambled information comprises broadcast information on a physical broadcast channel (PBCH).
32. The apparatus of claim 29 , wherein x is 2 if the maximum length is 4, and x is 3 if the maximum length is 8 or 64.
33. An apparatus for wireless communication at a user equipment (UE), comprising:
means for receiving a synchronization signal (SS) block, the SS block including information scrambled based on a SS block index portion, wherein a SS block index is based on an index of the SS block within an SS burst, and the SS block index portion comprises a portion of the SS block index, the SS block index portion is comprised of x least significant bits of the SS block index, where x is based on a maximum length of an SS burst, and the information includes broadcast information associated with control information; and
means for descrambling the scrambled information based on the SS block index portion.
34. The apparatus of claim 33 , wherein the control information is associated with a physical downlink control channel (PDCCH).
35. The apparatus of claim 33 , wherein the scrambled information comprises broadcast information on a physical broadcast channel (PBCH).
36. The apparatus of claim 33 , wherein x is 2 if the maximum length is 4, and x is 3 if the maximum length is 8 or 64.
37. A non-transitory computer readable medium storing code for wireless communication, the code comprising instructions executable by a processor to:
determine a synchronization signal (SS) block index associated with an SS block, wherein the SS block index is based on an index of the SS block within an SS burst;
scramble information based on a SS block index portion, wherein the SS block index portion comprises a portion of the determined SS block index, the SS block index portion is comprised of x least significant bits of the determined SS block index, where x is based on a maximum length of an SS burst, and the information includes broadcast information associated with control information; and
transmit the SS block, wherein the SS Block includes the scrambled information.
38. A non-transitory computer readable medium storing code for wireless communication, the code comprising instructions executable by a processor to:
receive a synchronization signal (SS) block, the SS block including information scrambled based on a SS block index portion, wherein a SS block index is based on an index of the SS block within an SS burst, and the SS block index block portion comprises a portion of the SS block index, the SS block index portion is comprised of x least significant bits of the SS block index, where x is based on a maximum length of an SS burst, and the information includes broadcast information associated with control information; and
descramble the scrambled information based on the SS block index portion.