Throughput Enhancement by Power-Control in Wireless Ad Hoc Networks

• Main Authors: Chia-Cheng Hsieh, 謝佳承
• Other Authors: Szu-Lin Su
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/32738289552129170765

碩士 === 國立成功大學 === 電腦與通信工程研究所 === 95 === The Distributed Control Function (DCF) of the IEEE 802.11standard is dominant MAC protocol for ad hoc networks. This protocol generally follows the CSMA/CA paradigm and uses four-way handshake to resolve channel contention. Any node that receives the RTS or the CTS packets defers its transmission until the ongoing transmission is over. It negatively impacts the channel utilization by not allowing concurrent transmissions to take place. We insert power control information into the control packet and use it to bound the transmission power of potential interfering terminals in the vicinity of the receiver to achieve two concurrent transmissions. Therefore, we not only improve the network throughput, but also reduce the delay of packet.