-/* Copyright (c) 2019-2020. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2019-2021. The SimGrid Team. All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
namespace kernel {
namespace resource {
+class XBT_PRIVATE NetworkWifiAction;
+
class NetworkWifiLink : public LinkImpl {
/** @brief Hold every rates association between host and links (host name, rates id) */
std::map<xbt::string, int> host_rates_;
- /** @brief A link can have several bandwith attach to it (mostly use by wifi model) */
+ /** @brief A link can have several bandwidths attached to it (mostly use by wifi model) */
std::vector<Metric> bandwidths_;
+ /** @brief Should we use the decay model ? */
+ bool use_decay_model_=false;
+ /** @brief Wifi maximal bit rate according to the ns-3 802.11n standard */
+ const double wifi_max_rate_ = 54 * 1e6 / 8;
+ /** @brief minimum bit rate observed with ns3 during our calibration experiments */
+ const double wifi_min_rate_ = 41.70837 * 1e6 / 8;
+ /** @brief Amount of stations used in the reference point to rescale SimGrid predictions to fit ns-3 ones */
+ const int model_n_=5;
+ /** @brief Bit rate observed on ns3 at the reference point used for rescaling */
+ const double model_rate_=42.61438*1e6 / 8;
+ /** @brief The bandwidth to use for each SNR level, corrected with the decay rescale mechanism */
+ std::vector<Metric> decay_bandwidths_;
+
public:
- NetworkWifiLink(NetworkCm02Model* model, const std::string& name, std::vector<double> bandwidths,
- lmm::System* system);
+ NetworkWifiLink(const std::string& name, std::vector<double> bandwidths, lmm::System* system);
void set_host_rate(const s4u::Host* host, int rate_level);
/** @brief Get the AP rate associated to the host (or -1 if not associated to the AP) */
- double get_host_rate(const s4u::Host* host);
+ double get_host_rate(const s4u::Host* host) const;
- s4u::Link::SharingPolicy get_sharing_policy() override;
+ s4u::Link::SharingPolicy get_sharing_policy() const override;
void apply_event(kernel::profile::Event*, double) override { THROW_UNIMPLEMENTED; }
void set_bandwidth(double) override { THROW_UNIMPLEMENTED; }
- void set_latency(double) override { THROW_UNIMPLEMENTED; }
+ LinkImpl* set_latency(double) override;
+ void refresh_decay_bandwidths();
+ bool toggle_decay_model();
+ int get_host_count() const;
+};
+
+class NetworkWifiAction : public NetworkCm02Action {
+ NetworkWifiLink* src_wifi_link_;
+ NetworkWifiLink* dst_wifi_link_;
+
+public:
+ NetworkWifiAction() = delete;
+ NetworkWifiAction(Model* model, s4u::Host& src, s4u::Host& dst, double cost, bool failed,
+ NetworkWifiLink* src_wifi_link, NetworkWifiLink* dst_wifi_link)
+ : NetworkCm02Action(model, src, dst, cost, failed)
+ , src_wifi_link_(src_wifi_link)
+ , dst_wifi_link_(dst_wifi_link)
+ {}
+
+ NetworkWifiLink* get_src_link() const { return src_wifi_link_; }
+ NetworkWifiLink* get_dst_link() const { return dst_wifi_link_; }
};
} // namespace resource