A data processing apparatus, comprising: an acquiring module, configured to acquire a first maximum downlink delay tolerance, MDDT, sent by a core network entity, and provide the first MDDT to a determining module, wherein the first MDDT indicates a maximum delay tolerance value corresponding to processing, by the apparatus, downlink data of all services on the apparatus; the determining module, configured to determine time information of a first MDDT timer by using the first MDDT, wherein the time information of the first MDDT timer comprises start time and end time of a UE sleep mode status corresponding to the first MDDT; and a changing module, configured to change the UE status according to the time information of the first MDDT timer determined by the determining module; wherein: the acquiring module is further configured to acquire a first idle state, IS, value sent by the core network entity and provide the first IS value to the determining module, wherein the first IS value is duration when the apparatus is in an idle state; the determining module is further configured to determine time information of a first idle state timer, IST, by using the first IS value, wherein the time information of the first IST comprises start time and end time of a UE status corresponding to the first IS value; and the changing module is further configured to change the UE status according to the time information of the first IST determined by the determining module; characterized in that the apparatus acquires the first MDDT and the first IS value belonging to a type of the apparatus from a system broadcast message sent by the core network entity. an acquiring module, configured to acquire a first maximum downlink delay tolerance, MDDT, sent by a core network entity, and provide the first MDDT to a determining module, wherein the first MDDT indicates a maximum delay tolerance value corresponding to processing, by the apparatus, downlink data of all services on the apparatus; the determining module, configured to determine time information of a first MDDT timer by using the first MDDT, wherein the time information of the first MDDT timer comprises start time and end time of a UE sleep mode status corresponding to the first MDDT; and a changing module, configured to change the UE status according to the time information of the first MDDT timer determined by the determining module; wherein: the acquiring module is further configured to acquire a first idle state, IS, value sent by the core network entity and provide the first IS value to the determining module, wherein the first IS value is duration when the apparatus is in an idle state; the determining module is further configured to determine time information of a first idle state timer, IST, by using the first IS value, wherein the time information of the first IST comprises start time and end time of a UE status corresponding to the first IS value; and the changing module is further configured to change the UE status according to the time information of the first IST determined by the determining module; characterized in that the apparatus acquires the first MDDT and the first IS value belonging to a type of the apparatus from a system broadcast message sent by the core network entity. the acquiring module is further configured to acquire a first idle state, IS, value sent by the core network entity and provide the first IS value to the determining module, wherein the first IS value is duration when the apparatus is in an idle state; the determining module is further configured to determine time information of a first idle state timer, IST, by using the first IS value, wherein the time information of the first IST comprises start time and end time of a UE status corresponding to the first IS value; and the changing module is further configured to change the UE status according to the time information of the first IST determined by the determining module; characterized in that the apparatus acquires the first MDDT and the first IS value belonging to a type of the apparatus from a system broadcast message sent by the core network entity.