Antenna switching method and related device

A first communication device, comprising:

• 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:
• combine a plurality of sectors in a first network device into a cell;
• allocate an independent synchronization signal and physical broadcast channel block (SSB) to each sector in the cell, wherein each sector corresponds to an antenna number, and the cell comprises a sector corresponding to a first antenna and a sector corresponding to a second antenna;
• determine a first antenna identifier based on determining whether air interface transmission information comprises service data of the SSB, wherein the first antenna identifier corresponds to a first switch state, and the first switch state indicates that a second communication device communicates with the first antenna within a first time unit;
• and
• send the first antenna identifier to a digital switch, wherein the first antenna identifier is used by the digital switch to switch from a second switch state to the first switch state, the second switch state indicates that the second communication device communicates with the second antenna within a second time unit, and wherein the second communication device is configured to process a signal of the first communication device.

A digital switch, comprising:

• a handover switch;
• 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, through the handover switch, a first antenna identifier sent by a first communication device, wherein the first antenna identifier corresponds to a first switch state, and the first switch state indicates that a second communication device communicates with a first antenna within a first time unit, wherein a quantity of handover switches is greater than or equal to a quantity of channels of the second communication device;
• and
• switch from a second switch state to the first switch state based on the first antenna identifier through the handover switch, wherein the second switch state indicates that the second communication device communicates with a second antenna within a second time unit, and the second communication device is configured to process a signal of the first communication device.