Reduced Packet Probing Multirate Adaptation For Multihop Ad Hoc Wireless Networks
نویسندگان
چکیده
In this paper, we conduct a systematic experimental study to identify the challenges for multirate adaptation in the context of multihop ad hoc networks. We first investigate the existing multirate adaptation algorithms to study how they operate in multihop ad hoc networks and obtain insights on the sources of their behavior. Second, we design and implement a novel multirate adaptation scheme, Reduced Packet Probing (RPP), that allows a sender node to effectively approximate channel-error loss in the presence of collisions. We find that our RPP scheme, implemented in the Emulab wireless mesh network [11], achieves 41%– 53% higher TCP throughput in comparison to the default multirate adaptation scheme, SampleRate [7], in the MadWifi [18] IEEE 802.11 driver.
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