An antenna switching method, carried out by a first terminal device configured to be operable in a radio communication system according to the 3GPP standard, the method comprising: receiving configuration information sent by a network device; 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 a positive integer; wherein 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 antenna switching method further comprises: reporting a first, antenna switching, capability that supports the antenna switching configuration represented by the xTyR; wherein the antenna switching 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; 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 greater than, or is equal to Y symbols: wherein a configurable value of a resourceType field corresponding to an SRS resource set is aperiodic, semipersistent, or periodic; and the M is equal to 1, 2 or 3, transmitting an SRS signal according to the configuration information. receiving configuration information sent by a network device; 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 a positive integer; wherein 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 antenna switching method further comprises: reporting a first, antenna switching, capability that supports the antenna switching configuration represented by the xTyR; wherein the antenna switching 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; 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 greater than, or is equal to Y symbols: wherein a configurable value of a resourceType field corresponding to an SRS resource set is aperiodic, semipersistent, or periodic; and the M is equal to 1, 2 or 3, transmitting an SRS signal according to the configuration information.