A communication system comprising: a first communication device (100_1) configured to operate as a first access point, AP1 and adapted to configure a first wireless network (BSS_1) together with another peripheral device or a plurality of other peripheral devices (200_1 to 200_3) configured to operate as station, STA by using a first basic service set identifier, BSSID; and a second communication device (100_2) configured to operate as a second access point, AP2 and adapted to configure a second wireless network (BSS_2) together with another peripheral device or a plurality of other peripheral devices (200_4 to 200_6) configured to operate as station, STA by using a second BSSID, wherein the first BSSID is identical to a media access control, MAC address of the first communication device, the second BSSID is identical to the MAC address of the second communication device, the first communication device (100_1) and the second communication device (100_2) share a common first virtual BSSID, VBSSID, characterized in that the first communication device is configured to transmit a first frame in which the first VBSSID has been designated as a BSSID in the BSSID field of its IEEE 802.11 header, and perform reception processing of a frame in which the first VBSSID has been designated as the BSSID in the BSSID field of its IEEE 802.11 header, as a valid frame, in addition to a frame in which the first BSSID has been designated as the BSSID in the BSSID field of its IEEE 802.11 header, and the second communication device is configured to perform reception processing of the frame in which the first VBSSID has been designated as the BSSID in the BSSID field of its IEEE 802.11 header, as the valid frame, in addition to a frame in which the second BSSID has been designated as the BSSID in the BSSID field of its IEEE 802.11 header. a first communication device (100_1) configured to operate as a first access point, AP1 and adapted to configure a first wireless network (BSS_1) together with another peripheral device or a plurality of other peripheral devices (200_1 to 200_3) configured to operate as station, STA by using a first basic service set identifier, BSSID; and a second communication device (100_2) configured to operate as a second access point, AP2 and adapted to configure a second wireless network (BSS_2) together with another peripheral device or a plurality of other peripheral devices (200_4 to 200_6) configured to operate as station, STA by using a second BSSID, wherein the first BSSID is identical to a media access control, MAC address of the first communication device, the second BSSID is identical to the MAC address of the second communication device, the first communication device (100_1) and the second communication device (100_2) share a common first virtual BSSID, VBSSID, characterized in that the first communication device is configured to transmit a first frame in which the first VBSSID has been designated as a BSSID in the BSSID field of its IEEE 802.11 header, and perform reception processing of a frame in which the first VBSSID has been designated as the BSSID in the BSSID field of its IEEE 802.11 header, as a valid frame, in addition to a frame in which the first BSSID has been designated as the BSSID in the BSSID field of its IEEE 802.11 header, and transmit a first frame in which the first VBSSID has been designated as a BSSID in the BSSID field of its IEEE 802.11 header, and perform reception processing of a frame in which the first VBSSID has been designated as the BSSID in the BSSID field of its IEEE 802.11 header, as a valid frame, in addition to a frame in which the first BSSID has been designated as the BSSID in the BSSID field of its IEEE 802.11 header, and the second communication device is configured to perform reception processing of the frame in which the first VBSSID has been designated as the BSSID in the BSSID field of its IEEE 802.11 header, as the valid frame, in addition to a frame in which the second BSSID has been designated as the BSSID in the BSSID field of its IEEE 802.11 header.