Abstract: Embodiments of this application provide an EIRP control method and a communications apparatus. In this solution, an EIRP threshold of a spatial grid may be determined, where the EIRP threshold of the spatial grid is related to a safety distance of the spatial grid; and a plurality of beams are controlled, so that a total EIRP of the plurality of beams in the spatial grid is less than or equal to the EIRP threshold. According to the foregoing solution, a total EIRP of each spatial grid may be controlled, at a granularity of a spatial grid, to not exceed an EIRP threshold of the spatial grid, so that deployment of a MIMO access network device satisfies an EMF strength requirement specified by each country/region.

Abstract: This application provides a communication method and related apparatus. In the communication method, a network device determines a first normalized power at a start moment of an nth period in N periods, and determines a total normalized power expected to be used by a plurality of cells in the nth period. When the total normalized power is greater than the first normalized power, the network device allocates power to each cell based on a preset normalized power of each cell and the first normalized power. This resolves a problem that when a cell power quota at each frequency for a multi-frequency cell is limited, the coverage and network performance of each cell is affected.

Abstract: The technology described herein relates to an SRS transmission method, an access network device, and a terminal device. The method includes sending channel sounding reference signal (SRS) time domain resource indication information to a terminal device, where the SRS time domain resource indication information indicates an SRS time domain resource, and the SRS time domain resource includes at least one of a first symbol to an eighth symbol in a first slot. The method further includes receiving an SRS from the terminal device on the SRS time domain resource.

Abstract: The present disclosure relates to transmit power control methods and apparatuses. In one example method, a network device determines a transmit power threshold corresponding to a spatial grid. The network device schedules a resource block (RB) or a carrier of one or more terminal devices corresponding to the spatial grid to control a transmit power corresponding to the spatial grid to be less than or equal to the transmit power threshold corresponding to the spatial grid.

Abstract: A network device obtains EMF strength of each grid in a first grid group. The first grid group includes M grids obtained by dividing a signal coverage area of the network device, and M is an integer greater than 1. The network device determines a second grid group based on EMF strength of the M grids. The second grid group includes at least a first grid and a second grid, a coverage area of the first grid is greater than that of the second grid, and EMF strength of the first grid is lower than EMF strength of the second grid. The network device monitors EMF strength of a coverage area of the second grid group based on the second grid group, to adjust the EMF strength of the coverage area of the second grid group.

Abstract: This application provides a method for sending a cell downlink fixed resource and a communications apparatus, which are applied to an RRU networking scenario. In the method, a first network device configures a first sending time in which a first cell of the first network device sends a cell downlink fixed resource, and controls the first cell to send the cell downlink fixed resource in the first sending time. The first sending time is different from a sending time in which a neighboring cell of the first cell sends the cell downlink fixed resource, and the first cell and the neighboring cell of the first cell carry a same frequency.

Abstract: Embodiments of this application provide an EIRP control method and a communications apparatus. In this solution, an EIRP threshold of a spatial grid may be determined, where the EIRP threshold of the spatial grid is related to a safety distance of the spatial grid; and a plurality of beams are controlled, so that a total EIRP of the plurality of beams in the spatial grid is less than or equal to the EIRP threshold. According to the foregoing solution, a total EIRP of each spatial grid may be controlled, at a granularity of a spatial grid, to not exceed an EIRP threshold of the spatial grid, so that deployment of a MIMO access network device satisfies an EMF strength requirement specified by each country/region.

Abstract: The present disclosure relates to equivalent isotropically radiated power (EIRP) control methods and communications apparatus. In one example method, an EIRP threshold of a spatial grid is determined, where the EIRP threshold of the spatial grid is related to a safety distance of the spatial grid, and a plurality of beams are controlled, so that a total EIRP of the plurality of beams in the spatial grid is less than or equal to the EIRP threshold.

Abstract: Embodiments of this application provide an EIRP control method and a communications apparatus. In this solution, an EIRP threshold of a spatial grid may be determined, where the EIRP threshold of the spatial grid is related to a safety distance of the spatial grid; and a plurality of beams are controlled, so that a total EIRP of the plurality of beams in the spatial grid is less than or equal to the EIRP threshold. According to the foregoing solution, a total EIRP of each spatial grid may be controlled, at a granularity of a spatial grid, to not exceed an EIRP threshold of the spatial grid, so that deployment of a MIMO access network device satisfies an EMF strength requirement specified by each country/region.

Abstract: This application provides an SRS transmission method, an access network device, and a terminal device. The method includes: sending channel sounding reference signal SRS time domain resource indication information to a terminal device, where the SRS time domain resource indication information indicates an SRS time domain resource, and the SRS time domain resource includes at least one of the first symbol to the eighth symbol in a first slot; and receiving an SRS from the terminal device on the SRS time domain resource. In this application, more symbols can be allocated to transmit an SRS, so that more accurate channel estimation can be performed based on the received SRS.