Ashin Walpola
0e9525162d
obu-firmware builds against vanetza-idf from microbu-esp32c5/external, but that tree was gitignored, so a clone of this repository could not build the firmware it ships. It is now committed here as ordinary files in its own folder, microbu-esp32c5/: the colleague's commit cf4b99f plus the V2X2MAP bridge's signature verification (--trust) used on the bench. Nothing is fetched from or pushed to the colleague's repository; this repository and its remotes carry everything. The folder's own .gitignore keeps build output, downloaded components and private key material out, as it did there; the committed file set is identical to that repository's tracked files. The ESP32-C5 is still flashed from obu-firmware/, which only takes vanetza-idf from microbu-esp32c5/, so the two stay separate folders. FLASHING.md says how to take a newer version of the colleague's tree (copy it over the folder, rebuild, test, commit).
76 lines
2.0 KiB
C++
76 lines
2.0 KiB
C++
#ifndef CBR_AGGREGATOR_HPP_VUGJW6BW
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#define CBR_AGGREGATOR_HPP_VUGJW6BW
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#include <vanetza/dcc/channel_load.hpp>
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#include <vanetza/geonet/timestamp.hpp>
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#include <array>
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namespace vanetza
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{
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namespace geonet
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{
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class LocationTable;
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/**
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* CbrAggregator realises the CBR_G aggregation, originally specified by TS 102 636-4-2 V1.1.1
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* section 5.2.2 and carried forward by TS 103 836-4-2 V2.1.1 clause 5.3 (Release 2; the
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* five-step algorithm here, including using the previous cycle's local CBR in the final
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* max(), matches the current text exactly).
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*
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* Since this algorithm relies mainly on location table entries it is placed in the geonet module.
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*/
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class CbrAggregator
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{
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public:
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using ChannelLoad = dcc::ChannelLoad;
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CbrAggregator();
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/**
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* Get local channel busy ratio, i.e. CBR_L_0_Hop
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* \return CBR
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*/
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ChannelLoad get_local_cbr() const { return m_local_cbr[0]; }
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/**
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* Get one-hop channel busy ratio, i.e. CBR_L_1_Hop
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* \return CBR
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*/
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ChannelLoad get_one_hop_cbr() const { return m_one_hop_cbr; }
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/**
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* Get two-hop channel busy ratio, i.e. CBR_L_2_Hop
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* \return CBR
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*/
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ChannelLoad get_two_hop_cbr() const { return m_two_hop_cbr; }
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/**
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* Get global channel busy ratio
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* \return CBR
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*/
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ChannelLoad get_global_cbr() const { return m_global_cbr; }
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/**
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* Aggregate {1,2}-hop CBRs from received CBR values stored in location table
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* \parame local most recent local CBR measurement CBR_L_0_Hop
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* \param lt location table containing LocTEX_G5 entries
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* \param cbr_lifetime reject entries older than T_cbr
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* \param cbr_target reference value
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*/
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void aggregate(ChannelLoad cbr_local, const LocationTable& lt, Timestamp cbr_lifetime, ChannelLoad cbr_target);
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private:
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std::array<ChannelLoad, 2> m_local_cbr;
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ChannelLoad m_one_hop_cbr;
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ChannelLoad m_two_hop_cbr;
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ChannelLoad m_global_cbr;
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};
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} // namespace geonet
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} // namespace vanetza
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#endif /* CBR_AGGREGATOR_HPP_VUGJW6BW */
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