Based on the Multi-Packet Reception (MPR) capability at the physical layerand the Distributed Coordination Function (DCF) of the IEEE 802.11 MAC protocol, we propose amodified new solution about WAITING mechanism to m...Based on the Multi-Packet Reception (MPR) capability at the physical layerand the Distributed Coordination Function (DCF) of the IEEE 802.11 MAC protocol, we propose amodified new solution about WAITING mechanism to make full use of the MPR capability in this paper,which is named as modified distributed medium access control algorithm. We describe the details ofeach step of the algorithm after introducing the WAITING mechanism. Then, we also analyze how thewaiting-time affects the throughput performance of the network. The network simulator NS-2 is usedto evaluate the throughput performance of the new WAITING algorithm and we compare it with IEEE802.11 MAC protocol and the old WAITING algorithm. The experimental results show that our newalgorithm has the best performance.展开更多
Mobile Ad hoc NETwork (MANET) consists of a set of mobile hosts which can operate independently without infrastructure base stations. Energy saving is a critical issue for MANET since most mobile hosts will operate on...Mobile Ad hoc NETwork (MANET) consists of a set of mobile hosts which can operate independently without infrastructure base stations. Energy saving is a critical issue for MANET since most mobile hosts will operate on battery powers. A cross layer coordinated framework for energy saving is proposed in this letter. On-demand power management, physical layer and medium access control layer dialogue based multi-packet reception, mobile agent based topology discovery and topology control based transmit power-aware and battery power-aware dynamic source routing are some of new ideas in this framework.展开更多
基金This works is supported by"863"Projects of China (No.2002AA121068).
文摘Based on the Multi-Packet Reception (MPR) capability at the physical layerand the Distributed Coordination Function (DCF) of the IEEE 802.11 MAC protocol, we propose amodified new solution about WAITING mechanism to make full use of the MPR capability in this paper,which is named as modified distributed medium access control algorithm. We describe the details ofeach step of the algorithm after introducing the WAITING mechanism. Then, we also analyze how thewaiting-time affects the throughput performance of the network. The network simulator NS-2 is usedto evaluate the throughput performance of the new WAITING algorithm and we compare it with IEEE802.11 MAC protocol and the old WAITING algorithm. The experimental results show that our newalgorithm has the best performance.
基金863" Project Fund (No.2002AA121068) National Natural Science Foundation of China(No.60272066)
文摘Mobile Ad hoc NETwork (MANET) consists of a set of mobile hosts which can operate independently without infrastructure base stations. Energy saving is a critical issue for MANET since most mobile hosts will operate on battery powers. A cross layer coordinated framework for energy saving is proposed in this letter. On-demand power management, physical layer and medium access control layer dialogue based multi-packet reception, mobile agent based topology discovery and topology control based transmit power-aware and battery power-aware dynamic source routing are some of new ideas in this framework.
