Method for firmware implementing in wireless high-speed modem

摘要

The present invention relates to a SoC design method for optimizing bus utilization in a high speed wireless modem using USB as an interface with a host, and a method for simplifying a system by downloading firmware from a host and not using nonvolatile memory in a module. To this end, a method for executing firmware stored in an external device in a host of the present invention may include determining whether the device in which the firmware is stored is an external volatile memory or a USB; If the firmware is stored in the USB, reconnecting the hardware with the USB; Downloading firmware stored in the USB to a modem; Calculating a checksum for error determination of firmware stored in the USB in the host, and transmitting the calculated checksum to the modem; Calculating a checksum for error determination of the firmware downloaded from the modem, and determining whether the calculated checksum is the same as the checksum received from the host; If the calculated checksum is identical to the received checksum, transmitting firmware stored in the modem to an internal memory; Executing the firmware stored in the internal memory.