Abstract: A terminal and a synchronization control method among terminals are provided. The method includes: a master controlling terminal establishing synchronization control connections with multiple controlled terminals respectively; the master controlling terminal delivering a unique authorization token held by the master controlling terminal to one controlled terminal among the multiple controlled terminals, to enable the current controlled terminal acquiring the authorization token to be capable of performing information interaction with the master controlling terminal for synchronization control processing. The solution can solve the problem of coordination interaction control between a master controlling terminal and multiple mutually independent controlled terminals, and avoid interaction conflict between the mutually independent controlled terminals. Moreover, the solution can further reduce the network bandwidth occupation and solve the problem of high network bandwidth occupation.

Abstract: A method for improving energy efficiency performance of a reader is disclosed in the present document. The method includes: initializing and adjusting operation parameters, and acquiring the current number of frame timeslots; updating a frame timeslot status, and determining that a power level is not required to be increased according to the updated frame timeslot status; and estimating the number of labels according to the current number of frame timeslots, and acquiring an optimum Q value according to the number of labels. A device for improving energy efficiency performance of a reader is also disclosed in the present document. With the method and device of the present document, throughput of a Radio Frequency Identification (RFID) system is maximized, thereby reducing energy consumption of the system and extending usage time of the system; and while the energy consumption is reduced, a rate at which the reader reads the labels is guaranteed.

Abstract: A reporting method for a network state includes: an intermediate node receiving a data packet; the intermediate node marking the data packet according to the current network state; and the intermediate node forwarding the marked data packet. A detecting method for a network state includes: a sink node receiving a data packet; the sink node parsing the data packet to obtain the marking information about the network state; and the sink node determining the network state according to the marking information. A reporting device corresponding to the reporting method, a detecting device corresponding to the detecting method, and a detecting system comprising the reporting device and the detecting method are also provided.

Abstract: A terminal and a synchronization control method among terminals are provided. The method includes: a master controlling terminal establishing synchronization control connections with multiple controlled terminals respectively; the master controlling terminal delivering a unique authorization token held by the master controlling terminal to one controlled terminal among the multiple controlled terminals, to enable the current controlled terminal acquiring the authorization token to be capable of performing information interaction with the master controlling terminal for synchronization control processing. The solution can solve the problem of coordination interaction control between a master controlling terminal and multiple mutually independent controlled terminals, and avoid interaction conflict between the mutually independent controlled terminals. Moreover, the solution can further reduce the network bandwidth occupation and solve the problem of high network bandwidth occupation.

Abstract: Disclosed are a reporting method, a detecting method, device and system for a network state. The reporting method for a network state includes: an intermediate node receiving a data packet; the intermediate node marking the data packet according to the current network state; and the intermediate node forwarding the marked data packet. The detecting method for a network state includes: a sink node receiving a data packet; the sink node parsing the data packet to obtain the marking information about the network state; and the sink node determining the network state according to the marking information. With the present document, the problem of heavy network burden due to a method of determining the network state with an active inquiry mode is solved, thus prolonging the service life of each node and optimizing the performance of the system.

Abstract: A method for improving energy efficiency performance of a reader is disclosed in the present document. The method includes: initializing and adjusting operation parameters, and acquiring the current number of frame timeslots; updating a frame timeslot status, and determining that a power level is not required to be increased according to the updated frame timeslot status; and estimating the number of labels according to the current number of frame timeslots, and acquiring an optimum Q value according to the number of labels. A device for improving energy efficiency performance of a reader is also disclosed in the present document. With the method and device of the present document, throughput of a Radio Frequency Identification (RFID) system is maximized, thereby reducing energy consumption of the system and extending usage time of the system; and while the energy consumption is reduced, a rate at which the reader reads the labels is guaranteed.