Communication method and apparatus for information transmission in a monitoring occasion for a beam
This application provides an information transmission method and an apparatus and relates to the field of communications technologies, to resolve a problem of power waste caused when a communications device blindly monitors downlink control information in all monitoring occasions. The method includes: determining, by a communications device, information about a target beam; determining a target monitoring occasion based on the information about the target beam and a mapping relationship between information about a beam and a monitoring occasion, where the target monitoring occasion is in a system information window, and the system information window is used for OSI; and monitoring downlink control information in the target monitoring occasion.
1. A method, comprising:
determining, by a network device, a determined other system information monitoring occasion in a system information window, wherein the determined other system information monitoring occasion does not conflict with an uplink symbol, the determined other system information monitoring occasion has a mapping relationship with information about a beam, other system information monitoring occasions in the system information window are sequentially numbered starting from a 1 st other system information monitoring occasion in the system information window, and the 1 st other system information monitoring occasion in the system information window is an earliest other system information monitoring occasion in the system information window; and
sending, by the network device, downlink control information of other system information in the determined other system information monitoring occasion, wherein the other system information includes system information other than minimum system information, and the minimum system information includes a master information block (MIB) and a system information block 1 (SIB1).
2. The method according to claim 1 , wherein the mapping relationship comprises:
a difference value between an index of the beam and an index of the determined other system information monitoring occasion is an integer multiple of a total quantity of beams actually transmitted by the network device.
3. The method according to claim 1 , wherein the mapping relationship satisfies the relation:
mod(Occasion index, N )= i ; and
wherein Occasion index represents an index of the determined other system information monitoring occasion in the system information window, N represents a total quantity of actually transmitted beams, and i represents an index of the beam.
4. A method, comprising:
determining, by an apparatus, a target other system information monitoring occasion in a system information window, wherein the target other system information monitoring occasion does not conflict with an uplink symbol, the target other system information monitoring occasion is determined based on information about a target beam and a mapping relationship between the information about the target beam and the target other system information monitoring occasion, other system information monitoring occasions in the system information window are sequentially numbered starting from a 1 st other system information monitoring occasion in the system information window, and the 1 st other system information monitoring occasion in the system information window is an earliest other system information monitoring occasion in the system information window; and
monitoring, by the apparatus, for downlink control information of other system information in the target other system information monitoring occasion, wherein the other system information includes system information other than minimum system information, and the minimum system information includes a master information block (MIB) and a system information block 1 (SIB1).
5. The method according to claim 4 , wherein the mapping relationship between the information about the target beam and the target other system information monitoring occasion comprises:
a difference value between an index of the target beam and an index of the target other system information monitoring occasion is an integer multiple of a total quantity of actually transmitted beams.
6. An apparatus, comprising:
a processor; and
a non-transitory memory, wherein the non-transitory memory stores an execution instruction that is executable by the processor, and the execution instruction includes instructions for:
determining a determined other system information monitoring occasion in a system information window, wherein the determined other system information monitoring occasion does not conflict with an uplink symbol, the determined other system information monitoring occasion has a mapping relationship with information about a beam, other system information monitoring occasions in the system information window are sequentially numbered starting from a 1 st other system information monitoring occasion in the system information window, and the 1 st other system information monitoring occasion in the system information window is an earliest other system information monitoring occasion in the system information window; and
sending downlink control information of other system information in the determined other system information monitoring occasion, wherein the other system information includes system information other than minimum system information, and the minimum system information includes a master information block (MIB) and a system information block 1 (SIB1).
7. The method according to claim 4 , wherein the mapping relationship between the information about the target beam and the target other system information monitoring occasion satisfies the relation:
mod(Occasion index, N )= i ; and
wherein Occasion index represents an index of the target other system information monitoring occasion in the system information window, N represents a total quantity of actually transmitted beams, and i represents an index of the target beam.
8. The method according to claim 4 , wherein the target beam meets a condition, and the condition comprises:
signal strengths of beams are ranked from strong to weak, and the signal strength of the target beam is ranked higher than a preset rank.
9. The apparatus according to claim 6 , wherein the mapping relationship satisfies the relation:
mod(Occasion index, N )= i ; and
wherein Occasion index represents an index of the determined other system information monitoring occasion in the system information window, N represents a total quantity of actually transmitted beams, and i represents an index of a beam.
10. The apparatus according to claim 6 , wherein the mapping relationship comprises:
a difference value between an index of the beam and an index of the determined other system information monitoring occasion is an integer multiple of a total quantity of actually transmitted beams.
11. An apparatus, comprising:
a processor; and
a non-transitory memory, wherein the non-transitory memory stores an execution instruction that is executable by the processor, and the execution instruction includes instructions for:
determining a target other system information monitoring occasion in a system information window, wherein the target other system information monitoring occasion does not conflict with an uplink symbol, the target other system information monitoring occasion is determined based on information about a target beam and a mapping relationship between the information about the target beam and the target other system information monitoring occasion, other system information monitoring occasions in the system information window are sequentially numbered starting from a 1 st other system information monitoring occasion in the system information window, and the 1 st other system information monitoring occasion in the system information window is an earliest other system information monitoring occasion in the system information window and
monitoring for downlink control information of other system information in the target other system information monitoring occasion, wherein the other system information includes system information other than minimum system information, and the minimum system information includes a master information block (MIB) and a system information block 1 (SIB1).
12. The apparatus according to claim 11 , wherein the mapping relationship between the information about the target beam and the target other system information monitoring occasion comprises:
a difference value between an index of the target beam and an index of the target other system information monitoring occasion is an integer multiple of a total quantity of actually transmitted beams.
13. The apparatus according to claim 11 , wherein the mapping relationship between the information about the target beam and the target other system information monitoring occasion satisfies the relation:
mod(Occasion index, N )= i ; and
wherein Occasion index represents an index of the target other system information monitoring occasion in the system information window, N represents a total quantity of actually transmitted beams, and i represents an index of the target beam.
14. The apparatus according to claim 11 , wherein the target beam meets a condition, and the condition comprises:
signal strengths of beams are ranked from strong to weak, and the signal strength of the target beam is ranked higher than a preset rank.