Communication method and communications apparatus

A communication method, comprising:

• receiving, by a network device, first information on a first resource, wherein the first information indicates a link failure;
• sending, by the network device, second information to a terminal device, wherein the second information indicates a second resource, and wherein the second information comprises at least one of downlink control information (DCI) in a dedicated search space or DCI scrambled by a dedicated radio network temporary identifier (RNTI);
• receiving, by the network device, third information on the second resource based on the second information, wherein the third information indicates at least one of a first reference signal or a first cell, and wherein when channel quality of the first reference signal is greater than or equal to a preset threshold, the link failure occurs in the first cell;
• sending, by the network device to the terminal device, fourth information indicating link failure recovery response information, wherein whether the fourth information is received using a QCL (quasi co-location)-TypeD spatial receive parameter corresponding to the first reference signal indicates whether the first reference signal is available when the fourth information is received by the terminal device;
• and
• deactivating, by the network device, the second resource.

A communications apparatus, comprising:

• a transmitter;
• a receiver;
• at least one processor;
• and
• one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to:
• send, by the transmitter, first information on a first resource, wherein the first information indicates a link failure;
• receive, by the receiver, second information, wherein the second information indicates a second resource, and wherein the second information comprises at least one of downlink control information (DCI) in a dedicated search space or DCI scrambled by a dedicated radio network temporary identifier (RNTI);
• send, by the transmitter, third information on the second resource based on the second information, wherein the third information indicates at least one of a first reference signal or a first cell, and wherein when channel quality of the first reference signal is greater than or equal to a preset threshold, the link failure occurs in the first cell;
• detect, based on the third information, fourth information indicating link failure recovery response information;
• in response to detecting the fourth information, deactivate the second resource;
• and
• determine that the first reference signal is available based on determining that the fourth information is received using a QCL (quasi co-location)-TypeD spatial receive parameter corresponding to the first reference signal.

A communications apparatus, comprising:

• a receiver;
• a transmitter;
• at least one processor;
• and one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to:
• receive, by the receiver, first information on a first resource, wherein the first information indicates a link failure;
• send, by the transmitter, second information, wherein the second information indicates a second resource, and wherein the second information comprises at least one of downlink control information (DCI) in a dedicated search space or DCI scrambled by a dedicated radio network temporary identifier (RNTI);
• receive, by the receiver, third information on the second resource based on the second information, wherein the third information indicates at least one of a first reference signal or a first cell, and wherein when channel quality of the first reference signal is greater than or equal to a preset threshold, the link failure occurs in the first cell;
• send, to a terminal device, fourth information indicating link failure recovery response information, wherein whether the fourth information is received using a QCL (quasi co-location)-TypeD spatial receive parameter corresponding to the first reference signal indicates whether the first reference signal is available when the fourth information is received by the terminal device;
• and
• deactivate the second resource.

A non-transitory computer-readable storage medium storing programming instructions for execution by at least one processor, that when executed by the at least one processor, cause a computer to perform operations comprising:

• sending, by a terminal device, first information on a first resource, wherein the first information indicates a link failure;
• receiving, by the terminal device, second information, wherein the second information indicates a second resource, and wherein the second information comprises at least one of downlink control information (DCI) in a dedicated search space or DCI scrambled by a dedicated radio network temporary identifier (RNTI);
• sending, by the terminal device, third information on the second resource based on the second information, wherein the third information indicates at least one of a first reference signal or a first cell, and wherein when channel quality of the first reference signal is greater than or equal to a preset threshold, the link failure occurs in the first cell;
• detecting, by the terminal device and based on the third information, fourth information indicating link failure recovery response information;
• in response to detecting the fourth information, deactivating, by the terminal device, the second resource;
• and determining that the first reference signal is available based on detecting determining that the fourth information is received using a QCL (quasi co-location)-TypeD spatial receive parameter corresponding to the first reference signal.