91 lines
2.9 KiB
C
91 lines
2.9 KiB
C
#pragma once
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#include <stdint.h>
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#include <stdbool.h>
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/* MS/BS Power related measurement averaging algo */
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enum gsm_power_ctrl_meas_avg_algo {
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GSM_PWR_CTRL_MEAS_AVG_ALGO_NONE = 0x00,
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GSM_PWR_CTRL_MEAS_AVG_ALGO_UNWEIGHTED = 0x01,
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GSM_PWR_CTRL_MEAS_AVG_ALGO_WEIGHTED = 0x02,
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GSM_PWR_CTRL_MEAS_AVG_ALGO_MOD_MEDIAN = 0x03,
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/* EWMA is an Osmocom specific algo */
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GSM_PWR_CTRL_MEAS_AVG_ALGO_OSMO_EWMA = 0x04,
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};
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/* MS/BS Power related measurement parameters */
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struct gsm_power_ctrl_meas_params {
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/* Thresholds (see 3GPP TS 45.008, section A.3.2.1) */
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uint8_t lower_thresh; /* lower (decreasing) direction */
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uint8_t upper_thresh; /* upper (increasing) direction */
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/* Threshold Comparators for lower (decreasing) direction */
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uint8_t lower_cmp_p; /* P1 for RxLev, P3 for RxQual */
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uint8_t lower_cmp_n; /* N1 for RxLev, N3 for RxQual */
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/* Threshold Comparators for upper (increasing) direction */
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uint8_t upper_cmp_p; /* P2 for RxLev, P4 for RxQual */
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uint8_t upper_cmp_n; /* N2 for RxLev, N4 for RxQual */
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/* Hreqave and Hreqt (see 3GPP TS 45.008, Annex A) */
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uint8_t h_reqave;
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uint8_t h_reqt;
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/* AVG algorithm and its specific parameters */
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enum gsm_power_ctrl_meas_avg_algo algo;
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union {
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/* Exponentially Weighted Moving Average */
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struct {
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/* Smoothing factor: higher the value - less smoothing */
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uint8_t alpha; /* 1 .. 99 (in %) */
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} ewma;
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};
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};
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/* MS/BS Power Control parameters */
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struct gsm_power_ctrl_params {
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/* Minimum interval between power level changes */
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uint8_t ctrl_interval; /* 1 step is 2 SACCH periods */
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/* Power change step size (maximum) */
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uint8_t inc_step_size_db; /* increasing direction */
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uint8_t red_step_size_db; /* reducing direction */
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/* Measurement averaging parameters for RxLev & RxQual */
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struct gsm_power_ctrl_meas_params rxqual_meas;
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struct gsm_power_ctrl_meas_params rxlev_meas;
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/* Measurement averaging parameters for C/I, per chan type */
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struct gsm_power_ctrl_meas_params ci_fr_meas;
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struct gsm_power_ctrl_meas_params ci_hr_meas;
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struct gsm_power_ctrl_meas_params ci_amr_fr_meas;
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struct gsm_power_ctrl_meas_params ci_amr_hr_meas;
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struct gsm_power_ctrl_meas_params ci_sdcch_meas;
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struct gsm_power_ctrl_meas_params ci_gprs_meas;
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};
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/* Measurement pre-processing state */
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struct gsm_power_ctrl_meas_proc_state {
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/* Number of measurements processed */
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unsigned int meas_num;
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/* Algorithm specific data */
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union {
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struct {
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/* Scaled up 100 times average value */
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int Avg100;
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} ewma;
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};
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};
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/* Default MS/BS Power Control parameters */
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extern const struct gsm_power_ctrl_params power_ctrl_params_def;
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void power_ctrl_params_def_reset(struct gsm_power_ctrl_params *params, bool is_bs_pwr);
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struct gsm_lchan;
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int lchan_ms_pwr_ctrl(struct gsm_lchan *lchan,
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const uint8_t ms_power_lvl,
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const int8_t ul_rssi_dbm,
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const int16_t ul_lqual_cb);
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int lchan_bs_pwr_ctrl(struct gsm_lchan *lchan,
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const struct gsm48_meas_res *mr);
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