| Summary: | 碩士 === 國立中央大學 === 資訊工程研究所 === 94 === As the rapid progress in wireless communication technology, various kinds of applications have been deployed in real life. Among them, Mobile ad-hoc network (MANET) is always recognized as an emerging one. MANET is a quite different network architecture when comparing to the traditional Internet, cellular networks, or WLAN. Several researches have indicated that the traditional communication protocols can not operate well. As many applications of multicasts in MANET are attractive in real life, the multicast routing protocol has been received much attention.
Lacking of a reliable multicast transmission is a big problem in several applications, because many applications require a protocol to guarantee the multicast transmission. For examples, Nintendo's DS and Sony's PlayStation Portable use flooding scheme to distribute data packets to support wireless multiplayer gaming. However, the most censorable problems are serious collision and low performance.
In this thesis, we propose a novel scheme, named the PBMRP (Path-Based Multicast Routing Protocol for Ad-Hoc Network) protocol, for the provisioning of reliable multicast in MANET environment. The concept of cross-layer, which coordinates routing layer and transport layer, is applied for the design in PBMRP so that the transmission can be more effective. The proposed PBMRP can make the route more robust with route repair mechanism. The receiver uses periodic SACK packet that sent back to the sender to provide information about flow control and reliability feedback. In addition, PBMRP can save more network resources when comparing to other scheme.
The simulation results show that addition to reducing the control overhead and the transmission cost, PBMRP can increase the throughput.
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