Topology switching method based on isochronous channel, apparatus, system and storage medium

A topology switching method based on an isochronous channel, wherein the method is applied to a peripheral slave device there is a first communication channel between the peripheral slave device and a first central slave device, and there is a plurality of isochronous channels between the first central slave device and a master device wherein the method comprises:

• obtaining, by the peripheral slave device, first isochronization information from the first central slave device, wherein the first isochronization information comprises a channel parameter of the first isochronous channel;
• making the first central slave device stop data transmission with the master device through the first isochronous channel, before the peripheral slave device starts data transmission with the master device according to the channel parameter of the first isochronous channel;
• and
• starting, by the peripheral slave device, the data transmission with the master device according to the channel parameter of the first isochronous channel,
• wherein the first isochronization information comprises first isochronization time information, and the starting, by the peripheral slave device, the data transmission with the master device according to the channel parameter of the first isochronous channel further comprises:
• determining, by the peripheral slave device and according to the first isochronization time information, a start time of starting the data transmission with the master device, wherein the start time is after completing transmitting an (N−1)th frame of data between the first central slave device and the master device through the first isochronous channel, and the start time is after the first central slave device stops the data transmission with the master device through the first isochronous channel;
• and
• starting, by the peripheral slave device, to transmit an Nth frame of data with the master device according to the channel parameter of the first isochronous channel at the start time;
• wherein the first isochronization time information comprises:
• a sending time when the first central slave device sends the first isochronization information to the peripheral slave device, and a time difference between the sending time and a time of starting the data transmission between the peripheral slave device and the master device.