2IEEE 802.15 WPAN Low Rate Task Group 4(TG4) Staging Area http:／／grouper.ieee org / groups l 802 / 15 / pub/TG4.html.
3Callaway E,Gorday P.Hester L,et al Home Networking with IEEE 802.15 4:A Developments for Low-rate Wireless Personal Area Networks IEEE Communication Magazine,2002,40(8):70～77.
