1 files changed, 85 insertions, 2 deletions
diff --git a/include/osmo-bts/power_control.h b/include/osmo-bts/power_control.h
index 43d4b591..0764ba76 100644
--- a/include/osmo-bts/power_control.h
+++ b/include/osmo-bts/power_control.h
@@ -1,7 +1,90 @@
 #pragma once
 
 #include <stdint.h>
-#include <osmo-bts/gsm_data.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, const int rxLevel);
+		      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);