Changes between Version 3 and Version 4 of Internal/WinlabMadwifi/PipelineMACPaper
- Timestamp:
- Nov 15, 2005, 5:38:46 PM (19 years ago)
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Internal/WinlabMadwifi/PipelineMACPaper
v3 v4 7 7 == Motivation == 8 8 * Per packet Micro-scheduling need firmware/hardware(MAC) upgrade 9 * Macro-scheduling could be done in multiple packet basis peri dodically, e.g 10ms.9 * Macro-scheduling could be done in multiple packet basis periodically, e.g 10ms. 10 10 * Cooperative scheduling extensions can be supported using a new layer on top of the existing MAC layer. 11 11 12 12 13 13 == Features of Scheme == 14 * each node conducts "global scheduling" based on "load info mation" of all other nodes.14 * each node conducts "global scheduling" based on "load information" of all other nodes. 15 15 * the global scheduling determines a TDMA-like slot/bandwidth allocation 16 * 3 stages, 2 1/2 pipelin eing:16 * 3 stages, 2 1/2 pipelining: 17 17 * estimation -- load exchange -- scheduling 18 18 * equivalent to predict -- signaling -- access … … 23 23 * wake_queue 24 24 25 == Experiment Evaluation == 26 27 using 2 nodes and 1 AP, configure 1 node to have twice bandwidth as another node (interferer/competitor) 28 25 29 == Weakness == 26 30 * a solution for IEEE 802.11 Wireless LAN, not a solution for multi-hop 27 31 * no solution for signalling loss, wrong scheduling automatically fades out in next cycle. 28 32 * rely on AP's beacon to sync all nodes. 33 * very simple experiment scenario and incomplete results. 29 34 30 35 31 36 32 37 33