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isrm:laborator-todo [2019/03/15 23:25] mbarbulescu |
isrm:laborator-todo [2019/10/29 19:34] (current) mbarbulescu |
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| + | ===== Idei laborator ===== | ||
| + | |||
| + | ==== Laborator ns-3 - propunere structura ==== | ||
| + | |||
| + | - Introducere: plotting | ||
| + | - Introducere: ns-3: structura, build, rulat exemple cu plot si pcap tracing (wifi-tcp?) | ||
| + | - Capacitatea mediului WiFi - cea ideala | ||
| + | - Capacitatea mediului WiFi - downlink vs uplink | ||
| + | - Modele de propagare WiFi: Friis, LogDistancePropagationLossModel, ThreeLogDistancePropagationLossModel , TwoRayGroundPropagationLossModel cu trafic UDP vs. TCP si cu/fara RTS/CTS | ||
| + | - Carrier sense fizic (EnergyDetectionThreshold) vs virtual (RX sensitivity) | ||
| + | - DCF / contention window | ||
| + | - DCF / contention window (cont.) | ||
| + | - Jain Fairness | ||
| + | - MCS multiple si rate adaption cu distanta (e unul din exemplele din ns-3) | ||
| + | - WiFi in Linux: setup ''hostapd'', ''wpa_supplicant'', ''iw'', modul monitor si ''tcpdump'' - analizat radio tap header | ||
| + | - WiFi in Linux 2: monitorizare PHY cu USRP? | ||
| + | |||
| + | <code C++> | ||
| + | //Din documentatia ns-3: https://www.nsnam.org/doxygen/classns3_1_1_wifi_mac.html | ||
| + | //https://www.nsnam.org/docs/release/3.5/manual/manual_59.html | ||
| + | //https://mehmetalierturk.com/2014/01/07/how-to-set-edca-parameters-in-ns3-802-11/ | ||
| + | |||
| + | void ns3::WifiMac::ConfigureDcf ( Ptr< Txop > dcf, | ||
| + | uint32_t cwmin, | ||
| + | uint32_t cwmax, | ||
| + | bool isDsss, | ||
| + | AcIndex ac | ||
| + | ) | ||
| + | |||
| + | NqosWifiMacHelper wifiMacHelper = NqosWifiMacHelper::Default (); | ||
| + | Ssid ssid = Ssid ("ns-3-ssid"); | ||
| + | wifiMacHelper.SetType ("ns3::NqstaWifiMac", "Ssid", SsidValue (ssid), "ActiveProbing", BooleanValue (false)); | ||
| + | wifiMacHelper.SetDcaParameters ("MinCw", UintegerValue (20), "Aifsn", UintegerValue (3)); | ||
| + | </code> | ||
| + | |||
| ==== Laborator - subiecte de explorat ==== | ==== Laborator - subiecte de explorat ==== | ||
