Status control method, data sending method, and terminal

A data sending method, comprising:

• obtaining, by an optical line terminal (OLT), to-be-sent data of N different rates, wherein N≥2;
• configuring, by the OLT, the to-be-sent data of the N different rates as a first downlink data frame, wherein the first downlink data frame comprises the to-be-sent data of the N different rates and indication information, wherein the indication information comprises length information of data of each respective rate in the first downlink data frame, and wherein respective length information for data of a respective rate corresponds to a period of time for transmitting the data of the respective rate;
• and
• sending, by the OLT, the first downlink data frame.

An optical network terminal, comprising:

• a transceiver;
• a clock and data recovery (CDR) module;
• and
• a processor;
• wherein the transceiver is configured to receive a first downlink data frame, wherein the first downlink data frame comprises data of N different rates and indication information, wherein the indication information comprises length information of data of each respective rate in the first downlink data frame, wherein respective length information for data of a respective rate corresponds to a period of time for transmitting the data of the respective rate, and wherein N≥2;
• wherein the processor is configured to:
• determine length information of first data in the data of the N different rates, wherein a rate of the first data is higher than a working rate of the clock and data recovery (CDR) module;
• and generate control information based on the length information of the first data;
• and
• wherein the CDR module is configured, based on the control information, to be in a specified state within a period of time corresponding to the length information of the first data, wherein the specified state comprises a state of the CDR module at the start of the period of time or a local reference clock of the CDR module.