Antenna switching method, terminal device and communication device

An antenna switching method, comprising:

• receiving, by a first terminal device, configuration information;
• wherein the configuration information indicates M Sounding Reference Signal (SRS) resource set groups, each of which contains at least one SRS resource set;
• wherein M is equal to 1, 2 or 3;
• and a resourceType field corresponding to at least one SRS resource set in one SRS resource set group is configured to be a same value;
• each of the SRS resource set groups corresponds to a corresponding antenna switching configuration that supports the first terminal device to have more than four receiving antennas;
• wherein, the antenna switching configuration is represented by xTyR;
• wherein y is an integer greater than 4, and x is a positive integer;
• the xTyR indicates that an SRS supports transmission by x antenna ports, and y corresponds to a number of all or part of receiving antennas of the first terminal device;
• wherein the method further comprises:
• when a plurality of SRS resources in one SRS resource set are transmitted on a same slot, not transmitting, by the first terminal device, other signals on Y symbols of a guard period between adjacent SRS resources, wherein Y is a positive integer;
• wherein a value of Y is determined according to a subcarrier spacing;
• wherein, when the value of Y is greater than a predetermined threshold value or equal to a predetermined value, a guard period between SRS resources in different SRS resource sets in a same SRS resource set group is at least greater than, or is equal to or greater than Y symbols;
• wherein an SRS resource contained in an SRS resource set occupies all or part of symbols of one slot;
• at least one symbol occupied by the SRS resource is determined according to a second UE capability reported by the first terminal device, the second UE capability is used for indicating available symbol information that is available for SRS resource configuration by the first terminal device in one slot;
• when the first terminal device does not report the second UE capability, the SRS resource contained in the SRS resource set occupies at least one symbol of the last six symbols of one slot;
• wherein the method further comprises:
• reporting, by the first terminal device, an antenna switching capability that supports the antenna switching configuration represented by the xTyR.