Adaptive Link Assignment Strategies in TDMA-based Multi-hop Ad Hoc Networks

• Main Authors: Po-Wei Chen, 陳柏瑋
• Other Authors: Szu-Lin Su
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/91145276123135253511

碩士 === 國立成功大學 === 電腦與通信工程研究所 === 97 === In past decades, MAC protocol design becomes an important issue in multi-hop Ad Hoc networks. Unlike infrastructure networks, multi-hop Ad Hoc networks operate without central coordinators. In the thesis, we propose a TDMA MAC protocol which can be applied in multi-hop Ad Hoc networks. TDMA slot assignment methods can be divided into two types: node-based assignment and link-based assignment. The former considers only the transmission rights of users, and the latter takes both transmission and reception into consideration. According to [1], link-based assignment performs better spatial reuse than node-based assignment. Therefore, we extend ASAP [2], a TDMA protocol with dynamic bandwidths, to a link-based TDMA protocol in this thesis. Our protocol not only provides fair and efficient slot assigning methods, but supports dynamic bandwidth requirements. We perform simulations to verify that the proposed scheme can achieve higher channel utilization than ASAP.