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