Joint channel estimation method and apparatus therefor

A joint channel estimation method, executed by a network device, and comprising:

• determining configuration information for a terminal device;
• and
• issuing the configuration information to the terminal device;
• wherein the configuration information is used by the terminal device to determine an actual time domain window length according to the configuration information and a maximum duration length of the terminal device;
• wherein a reporting strategy for the terminal device to report the maximum duration length comprises one of the following:
• the terminal device not reporting the maximum duration length;
• the terminal device periodically reporting the maximum duration length;
• or
• the terminal device aperiodically reporting the maximum duration length;
• wherein the actual time domain window length is determined by the terminal device in one of the following manners:
• the terminal device periodically reports the maximum duration length all the time;
• and takes, after a joint channel estimation mechanism is enabled, a nominal time domain window length as the actual time domain window length, wherein the terminal device receives the nominal time domain window length, the nominal time domain window length is determined based on the maximum duration length, and the nominal time domain window length is less than or equal to the maximum duration length;
• or takes the maximum duration length as the actual time domain window length, wherein the terminal device does not receive the nominal time domain window length;
• wherein the reporting strategy is that the terminal device periodically reports the maximum duration length all the time;
• or
• the terminal device periodically reports the maximum duration length after the joint channel estimation mechanism is enabled;
• and takes the nominal time domain window length as the actual time domain window length, wherein the terminal device receives the nominal time domain window length sent by a network device, the nominal time domain window length is determined based on the maximum duration length, and the nominal time domain window length is less than or equal to the maximum duration length;
• or takes the maximum duration length as the actual time domain window length, wherein the terminal device does not receive the nominal time domain window length;
• wherein the reporting strategy is that the terminal device periodically reports the maximum duration length after the joint channel estimation mechanism is enabled;
• or
• the terminal device aperiodically reports the maximum duration length, wherein the maximum duration length is less than a configured nominal time domain window length;
• and disables the joint channel estimation mechanism, re-enables, in response to receiving a reconfigured nominal time domain window length, the joint channel estimation mechanism, and takes the reconfigured nominal time domain window length as the actual time domain window length, wherein the reconfigured nominal time domain window length is less than or equal to the maximum duration length;
• or disables the joint channel estimation mechanism, takes the maximum duration length as the actual time domain window length, and re-enables the joint channel estimation mechanism, wherein the terminal device does not receive the reconfigured nominal time domain window length;
• wherein the reporting strategy is that the terminal device aperiodically reports the maximum duration length in response to determining that the maximum duration length is less than the configured nominal time domain window length.

A communication device, comprising a processor and a memory, wherein the memory stores a computer program, and the processor executes the computer program stored in the memory to cause the communication device to execute the following:

• determining a maximum duration length of the communication device;
• determining a reporting strategy for the maximum duration length;
• determining an actual time domain window length according to the reporting strategy and the maximum duration length;
• and
• performing joint channel estimation processing according to the actual time domain window length;
• wherein determining the reporting strategy for the maximum duration length comprises one of the following:
• determining the reporting strategy being that the communication device does not report the maximum duration length;
• determining the reporting strategy being that the communication device periodically reports the maximum duration length;
• or
• determining the reporting strategy being that the communication device aperiodically reports the maximum duration length;
• wherein determining the actual time domain window length according to the reporting strategy and the maximum duration length comprises one of the following:
• periodically reporting the maximum duration length all the time;
• and taking, after a joint channel estimation mechanism is enabled, a nominal time domain window length as the actual time domain window length, wherein the communication device receives the nominal time domain window length, the nominal time domain window length is determined based on the maximum duration length, and the nominal time domain window length is less than or equal to the maximum duration length;
• or taking the maximum duration length as the actual time domain window length, wherein the communication device does not receive the nominal time domain window length;
• wherein the reporting strategy is that the communication device periodically reports the maximum duration length all the time;
• or
• periodically reporting the maximum duration length after the joint channel estimation mechanism is enabled;
• and taking the nominal time domain window length as the actual time domain window length, wherein the communication device receives the nominal time domain window length sent by a network device, the nominal time domain window length is determined based on the maximum duration length, and the nominal time domain window length is less than or equal to the maximum duration length;
• or taking the maximum duration length as the actual time domain window length, wherein the communication device does not receive the nominal time domain window length;
• wherein the reporting strategy is that the communication device periodically reports the maximum duration length after the joint channel estimation mechanism is enabled;
• or
• aperiodically reporting the maximum duration length, wherein the maximum duration length is less than a configured nominal time domain window length;
• and disabling the joint channel estimation mechanism, re-enabling, in response to receiving a reconfigured nominal time domain window length, the joint channel estimation mechanism, and taking the reconfigured nominal time domain window length as the actual time domain window length, wherein the reconfigured nominal time domain window length is less than or equal to the maximum duration length;
• or disabling the joint channel estimation mechanism, taking the maximum duration length as the actual time domain window length, and re-enabling the joint channel estimation mechanism, wherein the communication device does not receive the reconfigured nominal time domain window length;
• wherein the reporting strategy is that the communication device aperiodically reports the maximum duration length in response to determining that the maximum duration length is less than the configured nominal time domain window length.