The modules has still a few problems:

* it required /system/etc/init.gprs-pppd for pppd.
	#!/system/bin/sh
	PPPD_PID=

	/system/bin/setprop "net.gprs.ppp-exit" ""

	/system/bin/log -t pppd "Starting pppd"

	#/system/xbin/pppd $*
	/system/bin/pppd /dev/ttyUSB0 115200 nocrtscts usepeerdns debug nodetach ipcp-accept-local ipcp-accept-remote defaultroute

	PPPD_EXIT=$?
	PPPD_PID=$!

	/system/bin/log -t pppd "pppd exited with $PPPD_EXIT"

	/system/bin/setprop "net.gprs.ppp-exit" "$PPPD_EXIT"


* required modify init.rc add: 
	on device-added-/dev/ttyUSB0
	chmod 0777 /dev/ttyUSB0
	on device-added-/dev/ttyUSB1
	chmod 0777 /dev/ttyUSB1
	on device-added-/dev/ttyUSB2
	chmod 0777 /dev/ttyUSB2
	on device-added-/dev/ttyUSB3
	chmod 0777 /dev/ttyUSB3

	on device-added-/dev/block/sr0
	start usb_modeswitch

	on boot
	service ril-daemon /system/bin/rild
	socket rild stream 660 root radio
	socket rild-debug stream 660 radio system
	user root
	group radio cache inet misc audio
	
	service pppd_gprs /system/etc/init.gprs-pppd
	user root
	group radio cache inet misc
	disabled
	oneshot
	
	service usb_modeswitch /system/bin/usbs
	user root
	disabled
	oneshot

* Edit system/build.prop ,add:
	# for 3g
	rild.libpath=/system/lib/libhuaweigeneric-ril.so
	rild.libargs=-d /dev/ttyUSB2
	keyguard.no_require_sim=1