Coding method, decoding method, and device

A user equipment (UE), comprising a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the computer program, when executed by the processor, causes the UE to perform:

• reporting N precoding matrix indicators (PMIs) to a network device;
• wherein
• each PMI is corresponding to one channel;
• a first PMI comprises channel information of a channel corresponding to a second PMI;
• the first PMI is one of the N PMIs;
• and the second PMI is at least one of the PMIs corresponding to channels before a channel corresponding to the first PMI, wherein N is a positive integer greater than 1;
• wherein the N PMIs correspond to L coding modules, and any coding module of the L coding modules obtains at least one PMI of the N PMIs;
• coding of a first coding module is based on coding information of a second coding module;
• the first coding module is one of the L coding modules;
• and
• the second coding module is a coding module that performs coding before the first coding module, and L is a positive integer greater than 1.

A network device, comprising a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the computer program, when executed by the processor, causes the network device to perform:

• decoding N precoding matrix indicators (PMIs) received from a user equipment (UE) to obtain channel information of N channels;
• wherein
• each PMI is corresponding to channel information of one channel;
• a first PMI comprises channel information of a channel corresponding to a second PMI;
• the first PMI is one of the N PMIs;
• and the second PMI is at least one of the PMIs corresponding to channels before a channel corresponding to the first PMI, and N is a positive integer greater than 1;
• wherein the decoding N PMIs received from a UE to obtain channel information of N channels comprises:
• decoding, by using Y decoding modules, the N PMIs received from the UE to obtain the channel information of the N channels;
• wherein
• any decoding module of the Y decoding modules is corresponding to at least one of the N PMIs;
• and Y is a positive integer greater than 1;
• wherein decoding of a first decoding module is based on decoding information of a second decoding module and/or coding information of a second coding module;
• the first decoding module is one of the Y decoding modules;
• the second decoding module is a decoding module before the first decoding module;
• and the second coding module is a coding module that performs coding before a coding module corresponding to the first decoding module.