THE METHOD OF DEVICE CAPABILITY INFORMATION NEGOTIATION, THE METHOD, SYSTEM AND DEVICE OF SYNCHRONIZATION

摘要

Method for device capability negotiation, and method, system and device for synchronization. The synchronization system includes a synchronization server and a synchronization client. The synchronization server or the synchronization client is adapted to skip the device capability negotiation and directly perform a synchronization with the synchronization server and the synchronization client when the negotiated device capability or status ID, or the status ID indicating that the device capability has not been changed and has been stored. The method for device capability negotiation includes receiving an operation request carrying a parameter requesting a device capability negotiation; determining that the current session is a device capability negotiation session according to the parameter requesting the device capability negotiation, carried by the request; returning a response and performing the device capability negotiation; storing results of the device capability negotiation and closing the current session. Embodiments of the present invention can improve the synchronization efficiency.