gsm48_arfcn_range_encode.h File Reference

#include <stdint.h>

Go to the source code of this file.

Macros
#define	OSMO_GSM48_RANGE_ENC_MAX_ARFCNS   29

Enumerations
enum	osmo_gsm48_range {   OSMO_GSM48_ARFCN_RANGE_INVALID = -1 ,   OSMO_GSM48_ARFCN_RANGE_128 = 127 ,   OSMO_GSM48_ARFCN_RANGE_256 = 255 ,   OSMO_GSM48_ARFCN_RANGE_512 = 511 ,   OSMO_GSM48_ARFCN_RANGE_1024 = 1023 }

Functions
int	osmo_gsm48_range_enc_determine_range (const int *arfcns, int size, int *f0_out)
	This implements the range determination as described in GSM 04.08 J4. More...
int	osmo_gsm48_range_enc_arfcns (enum osmo_gsm48_range rng, const int *arfcns, int sze, int *out, int idx)
	Range encode the ARFCN list. More...
int	osmo_gsm48_range_enc_find_index (enum osmo_gsm48_range rng, const int *arfcns, int size)
	Determine at which index to split the ARFCNs to create an equally size partition for the given range. More...
int	osmo_gsm48_range_enc_filter_arfcns (int *arfcns, const int sze, const int f0, int *f0_included)
int	osmo_gsm48_range_enc_128 (uint8_t *chan_list, int f0, int *w)
int	osmo_gsm48_range_enc_256 (uint8_t *chan_list, int f0, int *w)
int	osmo_gsm48_range_enc_512 (uint8_t *chan_list, int f0, int *w)
int	osmo_gsm48_range_enc_1024 (uint8_t *chan_list, int f0, int f0_incl, int *w)

Macro Definition Documentation

OSMO_GSM48_RANGE_ENC_MAX_ARFCNS

#define OSMO_GSM48_RANGE_ENC_MAX_ARFCNS   29

Enumeration Type Documentation

osmo_gsm48_range

enum osmo_gsm48_range

Enumerator
OSMO_GSM48_ARFCN_RANGE_INVALID
OSMO_GSM48_ARFCN_RANGE_128
OSMO_GSM48_ARFCN_RANGE_256
OSMO_GSM48_ARFCN_RANGE_512
OSMO_GSM48_ARFCN_RANGE_1024

Function Documentation

osmo_gsm48_range_enc_1024()

int osmo_gsm48_range_enc_1024	(	uint8_t *	chan_list,
		int	f0,
		int	f0_incl,
		int *	w
	)

References write_all_wn().

Referenced by range_encode().

osmo_gsm48_range_enc_128()

int osmo_gsm48_range_enc_128	(	uint8_t *	chan_list,
		int	f0,
		int *	w
	)

References write_all_wn(), and write_orig_arfcn().

Referenced by range_encode().

osmo_gsm48_range_enc_256()

int osmo_gsm48_range_enc_256	(	uint8_t *	chan_list,
		int	f0,
		int *	w
	)

References write_all_wn(), and write_orig_arfcn().

Referenced by range_encode().

osmo_gsm48_range_enc_512()

int osmo_gsm48_range_enc_512	(	uint8_t *	chan_list,
		int	f0,
		int *	w
	)

References write_all_wn(), and write_orig_arfcn().

Referenced by range_encode().

osmo_gsm48_range_enc_arfcns()

int osmo_gsm48_range_enc_arfcns	(	enum osmo_gsm48_range	range,
		const int *	arfcns,
		int	size,
		int *	out,
		const int	index
	)

Range encode the ARFCN list.

Parameters

range	The range to use.
arfcns	The list of ARFCNs
size	The size of the list of ARFCNs
out	Place to store the W(i) output.

References _range_enc_arfcns().

Referenced by _range_enc_arfcns(), and range_encode().

osmo_gsm48_range_enc_determine_range()

int osmo_gsm48_range_enc_determine_range	(	const int *	arfcns,
		const int	size,
		int *	f0
	)

This implements the range determination as described in GSM 04.08 J4.

The result will be a base frequency f0 and the range to use. Note that for range 1024 encoding f0 always refers to ARFCN 0 even if it is not an element of the arfcns list.

Parameters

[in]	arfcns	The input frequencies, they must be sorted, lowest number first
[in]	size	The length of the array
[out]	f0	The selected F0 base frequency. It might not be inside the list

References OSMO_GSM48_ARFCN_RANGE_1024, OSMO_GSM48_ARFCN_RANGE_128, OSMO_GSM48_ARFCN_RANGE_256, OSMO_GSM48_ARFCN_RANGE_512, and OSMO_GSM48_ARFCN_RANGE_INVALID.

osmo_gsm48_range_enc_filter_arfcns()

int osmo_gsm48_range_enc_filter_arfcns	(	int *	arfcns,
		const int	sze,
		const int	f0,
		int *	f0_included
	)

References mod().

Referenced by range_encode().

osmo_gsm48_range_enc_find_index()

int osmo_gsm48_range_enc_find_index	(	enum osmo_gsm48_range	range,
		const int *	freqs,
		const int	size
	)

Determine at which index to split the ARFCNs to create an equally size partition for the given range.

Return -1 if no such partition exists.

References mod(), and n.

Referenced by _range_enc_arfcns().