I. INTRODUCTION

A. Contribution

B. Massive MIMO

C. Spectrum Sharing

D. Beam Forming

E. Device to Device (D2D) communication

F. UDN (Ultra Dense Network)

G. IoT (Internet of Things)

III. THE PROPOSED SCENARIO OF ARTIFICIAL DUST AND ARTIFICIAL RAIN WITH HALF DUPLEX ATTACKING MODEL

A. Phase First

IV. CHALLENGES IN CONTEXT OF SECURITY

A. Secrecy capacity (SC) and SOP

B. Resource spoofing

C. Complexity

D. Identity spoofing

E. CSI availability

F. Handover management attacks

G. Latency

H. Jamming attack

V. CONCLUSION