(57) An indication information sending method, an indication information receiving method,
a device, and a system are provided, and relate to the field of wireless communications
technologies. The method includes: generating, by a base station, first indication
information, and sending the first indication information to a terminal device; and
receiving, by the terminal device, the first indication information, and determining
a power control manner of a first channel based on the first indication information,
where the first indication information is used to indicate the power control manner
of the first channel, the power control manner of the first channel is one power control
manner in a power control manner set, and the power control manner set includes at
least one power control manner Because a network device can indicate the power control
manner of the first channel to the terminal device by using the first indication information,
compared with the prior art, the terminal device determines a transmit power of a
signal in a more flexible manner, so that the terminal device can better adapt to
a current network.
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