IV. CONCLUSION
Providing seamless service to meet customers' demand is the mark of successful wireless communication systems in heterogeneous environments. With ad hoc relay nodes introduced in WLANs can enhance the data transmission capacity and improves network coverage. The Ad Hoc networking scheme based on IEEE802.15.4 standards is proposed to achieve the above goal. The designed network layer based on IEEE802.15.4 can provide data service and management service function interface. While the research of WLAN multi-hop ad Hoc network technology is still in the initial stage, mixed network capacity, user identity authentication ,security, QoS security are needed to be further studied.