Abstract: Disclosed are a method system, and device of updating local software. The method comprises: broadcasting a broadcast message for updating local software to multiple client ends; determining whether a response message about existence of the update software is received, updating local software through the client end sending out the response message, or through a remote server if no response message is received. Accordingly, restriction on transmission speed by OTA server in software update process and congestion in data transmission process can be avoided, thus improving downloading speed and facilitate a simultaneous update of software for a mass of devices.

Abstract: Disclosed are a method system, and device of updating local software. The method comprises: broadcasting a broadcast message for updating local software to multiple client ends; determining whether a response message about existence of the update software is received, updating local software through the client end sending out the response message, or through a remote server if no response message is received. Accordingly, restriction on transmission speed by OTA server in software update process and congestion in data transmission process can be avoided, thus improving downloading speed and facilitate a simultaneous update of software for a mass of devices.

Abstract: A method and system for locating an object are disclosed. The method comprises generating a plurality of sampling points in an activity area map for an object; obtaining a conditional probability density of the object's locating at the plurality of sampling points according to an initial electromagnetic field intensity of the plurality of sampling points and a current electromagnetic field intensity of the object to be located; conducting resampling and updating for the sampling points according to the conditional probability density; and determining a position of the object to be located based on coordinate values of sampling points after the updating. The present invention can improve the accuracy of the locating or tracking on an indoor object.