I. INTRODUCTION  
II. MOTIVATION  
III. APPLICATIONS & USE CASES  
IV. SYSTEM ASPECTS  
V. AIR INTERFACE: ENABLERS & TOPICS  
VI. MEDIUM ACCESS CONTROL: ENABLERS & TOPICS  
VII. NETWORKING: ENABLERS & UPPER-LAYER INTEGRATION  
VIII. TESTBEDS & PROTOTYPING  
IX. FUTURE & OPEN TOPICS  
X. CONCLUSION  