Bandwidth adjustment method, service transmission method, network device and readable storage medium

A bandwidth adjustment method, comprising:

• receiving a slot adjustment request sent from a predetermined device, and acquiring a slot adjustment scheme notified by the predetermined device;
• completing slot adjustment preparation on a current device according to the slot adjustment scheme, and sending a slot adjustment acknowledge signal to the predetermined device;
• and
• extracting and carrying, in response to detecting a slot adjustment indication signal sent from the predetermined device, a client service according to slots after the slot adjustment scheme is executed, starting from a corresponding receiving cell and a corresponding sending cell,
• wherein the slot adjustment preparation comprises at least slot adjustment preparation at a buffer depth, and the operation of completing the slot adjustment preparation on the current device according to the slot adjustment scheme comprises:
• determining a time deviation between a time point at which a receiving port of the current device actually executes the slot adjustment and a time point at which a sending port of the current device actually executes the slot adjustment, and determining a number of cells transferred in the time deviation;
• acquiring the number of slots to be adjusted in the slot adjustment scheme, and taking a product of the number of slots to be adjusted and the number of cells transferred in the time deviation as the number of changed slots in the time deviation;
• adjusting, according to a variation of a client service volume corresponding to the number of changed slots, the buffer depth of the current device to complete the adjustment preparation of the buffer depth at the current device.