Title :
IEEE 802.11 MAC protocol enhanced by busy tones
Author :
Leng, Supeng ; Zhang, Liren ; Chen, Yifan
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
Abstract :
Two novel MAC schemes are proposed to solve the hidden terminal problem and the exposed problem in ad hoc networks with large interference range. With the aid of dual busy tones, one scheme is a simple enhancement to IEEE 802.11, and the other is to exactly signify the interference range by adjusting the transmission power of busy tones. Both of the two schemes are able to prevent the collisions of data/ACK packets. The numerical results show that the two proposed schemes are able to enhance the saturation throughput of IEEE 802.11 significantly. The proposed VPDBT MAC can balance the trade off between spatial reuse and collision avoidance.
Keywords :
access protocols; ad hoc networks; mobile radio; telecommunication congestion control; wireless LAN; IEEE 802.11 MAC protocol; MANET; VPDBT MAC; data/ACK packet collision avoidance; dual busy tone enhanced protocol; exposed terminal problem; hidden terminal problem; large interference range networks; mobile ad hoc network; saturation throughput; spatial reuse; wireless LAN; Access protocols; Ad hoc networks; Collision avoidance; Interference; Media Access Protocol; Mobile ad hoc networks; Multiaccess communication; Throughput; Wireless LAN; Wireless application protocol;
Conference_Titel :
Communications, 2005. ICC 2005. 2005 IEEE International Conference on
Print_ISBN :
0-7803-8938-7
DOI :
10.1109/ICC.2005.1494936
