The SINR metric (#181), the one the 2007 thesis used for every headline result: "we normally use the signal-to-interference-and-noise ratio metric, as this gave the best results" (§4.2.6). More...
#include <anthocnet/core/link_metric.h>
Public Member Functions | |
| double | pheromone (const LinkObservation &o) const override |
| bool | usesLinkQuality () const override |
| True when the metric's per-hop cost is a link-quality cost (#181) rather than a time. | |
| double | hopCost (const HopSignals &s) const override |
| The cost of one of this node's own links, for a metric that usesLinkQuality(): the per-hop value a node writes into the hop a backward ant came over, and adds wherever it extends a path by one hop. | |
 Public Member Functions inherited from anthocnet::core::ILinkMetric | |
| virtual | ~ILinkMetric ()=default |
Detailed Description
The SINR metric (#181), the one the 2007 thesis used for every headline result: "we normally use the signal-to-interference-and-noise ratio metric, as this gave the best results" (§4.2.6).
Each link costs 1 when its SINR is above SINR_c and c_const otherwise (eq. 4.11, sinrLinkCost); a route costs the sum over its links, carried as the hops' per-hop values; and the pheromone is the inverse of that cost (eq. 4.3).
Definition at line 76 of file link_metric.h.
Member Function Documentation
◆ pheromone()
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inlineoverridevirtual |
Implements anthocnet::core::ILinkMetric.
Definition at line 77 of file link_metric.h.
References anthocnet::core::LinkObservation::hops, and anthocnet::core::LinkObservation::pathTime.
◆ usesLinkQuality()
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inlineoverridevirtual |
True when the metric's per-hop cost is a link-quality cost (#181) rather than a time.
The router then has each node put its own estimate of the link it received a backward ant over into that hop of the retraced path (thesis §4.2.2: "the reactive backward ant reads at each node i the local estimate c_i^n of the cost to go from i to the next hop n"), and uses the same link cost wherever it adds one hop to a path.
Reimplemented from anthocnet::core::ILinkMetric.
Definition at line 82 of file link_metric.h.
◆ hopCost()
|
inlineoverridevirtual |
The cost of one of this node's own links, for a metric that usesLinkQuality(): the per-hop value a node writes into the hop a backward ant came over, and adds wherever it extends a path by one hop.
Never called for a metric that does not use link quality.
Reimplemented from anthocnet::core::ILinkMetric.
Definition at line 92 of file link_metric.h.
References anthocnet::core::HopSignals::sinrCriticalDb, anthocnet::core::HopSignals::sinrDb, anthocnet::core::sinrLinkCost(), and anthocnet::core::HopSignals::sinrPenaltyCost.
The documentation for this struct was generated from the following file:
- core/include/anthocnet/core/link_metric.h
