The invention provides a
mobile broadband device and an auxiliary positioning method thereof. The method comprises the following steps: a host initiates a positioning application to a
mobile broadband device;
firmware of the
mobile broadband device determines whether the positioning application initiated by the host needs an auxiliary positioning function or not, and if so, the
firmware initiates an auxiliary positioning
data acquisition application to the host; after receiving the auxiliary positioning
data acquisition application initiated by a device side, the host initiates an auxiliary positioning
data acquisition application to a SUPL (
Secure User Plane Location)
server; the SUPL
server sends auxiliary positioning data to the host; after receiving the auxiliary positioning data, the host sends the auxiliary positioning data to the mobile
broadband device; by utilizing the received auxiliary positioning data, the
firmware of the mobile
broadband device calculates standard
GPS data and outputs the standard
GPS data to a positioning application program of the host. According to the device and the method in the invention, user experience is improved, a user flow is saved, a user
gain is increased, load of the device side is greatly lightened, a
performance index of a product is raised, and a usage scope of an auxiliary positioning function is expanded.