287 lines
12 KiB
C
287 lines
12 KiB
C
#pragma once
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#include <stdbool.h>
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#include <string.h>
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struct vty;
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/* handover_cfg is an opaque struct to manage several levels of configuration. There is an overall handover
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* config on 'network' level and a per-'bts' specific handover config. If the 'bts' level sets no values,
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* the defaults from 'network' level are used implicitly, and changes take effect immediately. */
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struct handover_cfg;
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#define HO_CFG_CONGESTION_CHECK_DEFAULT 10
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struct handover_cfg *ho_cfg_init(void *ctx, struct handover_cfg *higher_level_cfg);
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#define HO_CFG_STR_HANDOVER1 "Handover options for handover decision algorithm 1\n"
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#define HO_CFG_STR_HANDOVER2 "Handover options for handover decision algorithm 2\n"
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#define HO_CFG_STR_WIN "Measurement averaging settings\n"
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#define HO_CFG_STR_WIN_RXLEV HO_CFG_STR_WIN "Received-Level averaging\n"
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#define HO_CFG_STR_WIN_RXQUAL HO_CFG_STR_WIN "Received-Quality averaging\n"
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#define HO_CFG_STR_POWER_BUDGET "Neighbor cell power triggering\n" "Neighbor cell power triggering\n"
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#define HO_CFG_STR_AVG_COUNT "Number of values to average over\n"
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#define HO_CFG_STR_MIN "Minimum Level/Quality thresholds before triggering HO\n"
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#define HO_CFG_STR_AFS_BIAS "Configure bias to prefer AFS (AMR on TCH/F) over other codecs\n"
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#define HO_CFG_STR_MIN_TCH "Minimum free TCH timeslots before cell is considered congested\n"
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#define HO_CFG_STR_PENALTY_TIME "Set penalty times to wait between repeated handovers\n"
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#define as_is(x) (x)
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static inline bool a2bool(const char *arg)
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{
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return (bool)(atoi(arg));
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}
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static inline int bool2i(bool arg)
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{
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return arg? 1 : 0;
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}
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/* The HO_CFG_ONE_MEMBER macro gets redefined, depending on whether to define struct members,
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* function declarations or definitions... It is of the format
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* HO_CFG_ONE_MEMBER(TYPE, NAME, DEFAULT_VAL,
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* VTY_CMD_PREFIX, VTY_CMD, VTY_CMD_ARG, VTY_ARG_EVAL,
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* VTY_WRITE_FMT, VTY_WRITE_CONV,
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* VTY_DOC)
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* Then using HO_CFG_ALL_MEMBERS can save a lot of code dup in defining API declaration, API
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* definitions, VTY commands and VTY write code. Of course this doesn't prevent us from adding manual
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* members as well, in case future additions don't fit in this scheme.
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*
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* TYPE: a type name like int.
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* NAME: a variable name suitable for a struct member.
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* DEFAULT_VAL: default value, as passed to the VTY, e.g. '0' or 'foo', without quotes.
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* VTY_CMD_PREFIX: "handover1 ", "handover2 ", ... or just "" for the common general items.
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* VTY_CMD: a command string for VTY without any arguments.
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* VTY_CMD_ARG: VTY value range like '<0-23>' or 'foo|bar', will become '(VTY_CMD_ARG|default)'.
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* VTY_ARG_EVAL: function name for parsing the VTY arg[0], e.g. 'atoi'.
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* VTY_WRITE_FMT: printf-like string format for vty_out().
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* VTY_WRITE_CONV: function name to convert struct value to VTY_WRITE_FMT, e.g. 'as_is'.
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* VTY_DOC: VTY documentation strings to match VTY_CMD and VTY_CMD_ARGs.
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*/
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#define HO_GENERAL_CFG_ALL_MEMBERS \
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\
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HO_CFG_ONE_MEMBER(bool, ho_active, 0, \
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"", "handover", "0|1", a2bool, "%d", bool2i, \
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"Handover general config\n" \
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"Disable in-call handover\n" \
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"Enable in-call handover\n" \
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"Enable/disable handover: ") \
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\
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HO_CFG_ONE_MEMBER(int, algorithm, 1, \
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"", "handover algorithm", "1|2", atoi, "%d", as_is, \
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"Handover general config\n" \
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"Choose algorithm for handover decision\n" \
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"Algorithm 1: trigger handover based on comparing current cell and neighbor RxLev and RxQual," \
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" only.\n" \
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"Algorithm 2: trigger handover on RxLev/RxQual, and also to balance the load across several" \
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" cells. Consider available codecs. Prevent repeated handover by penalty timers.\n") \
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#define HODEC1_CFG_ALL_MEMBERS \
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\
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HO_CFG_ONE_MEMBER(unsigned int, hodec1_rxlev_avg_win, 10, \
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"handover1 ", "window rxlev averaging", "<1-10>", atoi, "%u", as_is, \
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HO_CFG_STR_HANDOVER1 \
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HO_CFG_STR_WIN_RXLEV \
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"How many RxLev measurements to use for averaging\n" \
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"RxLev averaging: " HO_CFG_STR_AVG_COUNT) \
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\
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HO_CFG_ONE_MEMBER(unsigned int, hodec1_rxqual_avg_win, 1, \
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"handover1 ", "window rxqual averaging", "<1-10>", atoi, "%u", as_is, \
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HO_CFG_STR_HANDOVER1 \
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HO_CFG_STR_WIN_RXQUAL \
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"How many RxQual measurements to use for averaging\n" \
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"RxQual averaging: " HO_CFG_STR_AVG_COUNT) \
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\
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HO_CFG_ONE_MEMBER(unsigned int, hodec1_rxlev_neigh_avg_win, 10, \
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"handover1 ", "window rxlev neighbor averaging", "<1-10>", atoi, "%u", as_is, \
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HO_CFG_STR_HANDOVER1 \
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HO_CFG_STR_WIN_RXLEV \
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"How many Neighbor RxLev measurements to use for averaging\n" \
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"How many Neighbor RxLev measurements to use for averaging\n" \
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"Neighbor RxLev averaging: " HO_CFG_STR_AVG_COUNT) \
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\
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HO_CFG_ONE_MEMBER(unsigned int, hodec1_pwr_interval, 6, \
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"handover1 ", "power budget interval", "<1-99>", atoi, "%u", as_is, \
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HO_CFG_STR_HANDOVER1 \
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HO_CFG_STR_POWER_BUDGET \
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"How often to check for a better cell (SACCH frames)\n" \
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"Check for stronger neighbor every N number of SACCH frames\n") \
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\
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HO_CFG_ONE_MEMBER(unsigned int, hodec1_pwr_hysteresis, 3, \
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"handover1 ", "power budget hysteresis", "<0-999>", atoi, "%u", as_is, \
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HO_CFG_STR_HANDOVER1 \
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HO_CFG_STR_POWER_BUDGET \
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"How many dB stronger must a neighbor be to become a HO candidate\n" \
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"Neighbor's strength difference in dB\n") \
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\
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HO_CFG_ONE_MEMBER(unsigned int, hodec1_max_distance, 9999, \
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"handover1 ", "maximum distance" , "<0-9999>", atoi, "%u", as_is, \
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HO_CFG_STR_HANDOVER1 \
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"Maximum Timing-Advance value (i.e. MS distance) before triggering HO\n" \
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"Maximum Timing-Advance value (i.e. MS distance) before triggering HO\n" \
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"Maximum Timing-Advance value (i.e. MS distance) before triggering HO\n") \
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#define HODEC2_CFG_ALL_MEMBERS \
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\
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HO_CFG_ONE_MEMBER(unsigned int, hodec2_rxlev_avg_win, 10, \
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"handover2 ", "window rxlev averaging", "<1-10>", atoi, "%u", as_is, \
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HO_CFG_STR_HANDOVER2 \
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HO_CFG_STR_WIN_RXLEV \
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"How many RxLev measurements to use for averaging\n" \
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"RxLev averaging: " HO_CFG_STR_AVG_COUNT) \
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\
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HO_CFG_ONE_MEMBER(unsigned int, hodec2_rxqual_avg_win, 1, \
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"handover2 ", "window rxqual averaging", "<1-10>", atoi, "%u", as_is, \
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HO_CFG_STR_HANDOVER2 \
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HO_CFG_STR_WIN_RXQUAL \
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"How many RxQual measurements to use for averaging\n" \
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"RxQual averaging: " HO_CFG_STR_AVG_COUNT) \
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\
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HO_CFG_ONE_MEMBER(unsigned int, hodec2_rxlev_neigh_avg_win, 10, \
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"handover2 ", "window rxlev neighbor averaging", "<1-10>", atoi, "%u", as_is, \
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HO_CFG_STR_HANDOVER2 \
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HO_CFG_STR_WIN_RXLEV \
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"How many Neighbor RxLev measurements to use for averaging\n" \
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"How many Neighbor RxLev measurements to use for averaging\n" \
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"Neighbor RxLev averaging: " HO_CFG_STR_AVG_COUNT) \
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\
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HO_CFG_ONE_MEMBER(unsigned int, hodec2_pwr_interval, 6, \
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"handover2 ", "power budget interval", "<1-99>", atoi, "%u", as_is, \
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HO_CFG_STR_HANDOVER2 \
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HO_CFG_STR_POWER_BUDGET \
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"How often to check for a better cell (SACCH frames)\n" \
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"Check for stronger neighbor every N number of SACCH frames\n") \
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\
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HO_CFG_ONE_MEMBER(unsigned int, hodec2_pwr_hysteresis, 3, \
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"handover2 ", "power budget hysteresis", "<0-999>", atoi, "%u", as_is, \
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HO_CFG_STR_HANDOVER2 \
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HO_CFG_STR_POWER_BUDGET \
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"How many dB stronger must a neighbor be to become a HO candidate\n" \
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"Neighbor's strength difference in dB\n") \
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\
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HO_CFG_ONE_MEMBER(unsigned int, hodec2_max_distance, 9999, \
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"handover2 ", "maximum distance" , "<0-9999>", atoi, "%u", as_is, \
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HO_CFG_STR_HANDOVER2 \
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"Maximum Timing-Advance value (i.e. MS distance) before triggering HO\n" \
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"Maximum Timing-Advance value (i.e. MS distance) before triggering HO\n" \
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"Maximum Timing-Advance value (i.e. MS distance) before triggering HO\n") \
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\
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HO_CFG_ONE_MEMBER(bool, hodec2_as_active, 0, \
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"handover2 ", "assignment", "0|1", a2bool, "%d", bool2i, \
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HO_CFG_STR_HANDOVER2 \
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"Enable or disable in-call channel re-assignment within the same cell\n" \
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"Disable in-call assignment\n" \
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"Enable in-call assignment\n") \
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\
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HO_CFG_ONE_MEMBER(enum tdma_meas_set, hodec2_tdma_meas_set, subset, \
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"handover2 ", "tdma-measurement", "auto|full|subset", \
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tdma_meas_set_from_str, "%s", tdma_meas_set_name, \
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HO_CFG_STR_HANDOVER2 \
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"Define measurement set of TDMA frames\n" \
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"Use full set when DTX is not in use, use subset when DTX is in use," \
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" as indicated by each Measurement Report\n" \
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"Full set of 102/104 TDMA frames\n" \
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"Sub set of 4 TDMA frames (SACCH)\n") \
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\
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HO_CFG_ONE_MEMBER(int, hodec2_min_rxlev, -100, \
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"handover2 ", "min rxlev", "<-110--50>", atoi, "%d", as_is, \
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HO_CFG_STR_HANDOVER2 \
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HO_CFG_STR_MIN \
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"How weak may RxLev of an MS become before triggering HO\n" \
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"minimum RxLev (dBm; note: negative values)\n") \
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\
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HO_CFG_ONE_MEMBER(int, hodec2_min_rxqual, 5, \
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"handover2 ", "min rxqual", "<0-7>", atoi, "%d", as_is, \
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HO_CFG_STR_HANDOVER2 \
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HO_CFG_STR_MIN \
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"How bad may RxQual of an MS become before triggering HO," \
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" where 0 is the best quality (bit error rate < 0.2%) and" \
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" 7 is the worst quality (bit error rate > 12.8%)," \
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" see 3GPP TS 45.008 8.2.4.\n" \
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"worst acceptable RxQual\n") \
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\
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HO_CFG_ONE_MEMBER(int, hodec2_afs_bias_rxlev, 0, \
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"handover2 ", "afs-bias rxlev", "<0-20>", atoi, "%d", as_is, \
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HO_CFG_STR_HANDOVER2 \
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HO_CFG_STR_AFS_BIAS \
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"RxLev improvement bias for AFS over other codecs\n" \
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"Virtual RxLev improvement (dB)\n") \
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\
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HO_CFG_ONE_MEMBER(int, hodec2_afs_bias_rxqual, 0, \
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"handover2 ", "afs-bias rxqual", "<0-7>", atoi, "%d", as_is, \
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HO_CFG_STR_HANDOVER2 \
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HO_CFG_STR_AFS_BIAS \
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"RxQual improvement bias for AFS over other codecs\n" \
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"Virtual RxQual improvement\n") \
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\
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HO_CFG_ONE_MEMBER(int, hodec2_tchf_min_slots, 0, \
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"handover2 ", "min-free-slots tch/f", "<0-9999>", atoi, "%d", as_is, \
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HO_CFG_STR_HANDOVER2 \
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HO_CFG_STR_MIN_TCH \
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"Minimum free TCH/F timeslots before cell is considered congested\n" \
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"Number of TCH/F slots\n") \
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\
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HO_CFG_ONE_MEMBER(int, hodec2_tchh_min_slots, 0, \
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"handover2 ", "min-free-slots tch/h", "<0-9999>", atoi, "%d", as_is, \
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HO_CFG_STR_HANDOVER2 \
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HO_CFG_STR_MIN_TCH \
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"Minimum free TCH/H timeslots before cell is considered congested\n" \
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"Number of TCH/H slots\n") \
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\
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HO_CFG_ONE_MEMBER(int, hodec2_ho_max, 9999, \
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"handover2 ", "max-handovers", "<1-9999>", atoi, "%d", as_is, \
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HO_CFG_STR_HANDOVER2 \
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"Maximum number of concurrent handovers allowed per cell\n" \
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"Number\n") \
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\
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HO_CFG_ONE_MEMBER(int, hodec2_penalty_max_dist, 300, \
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"handover2 ", "penalty-time max-distance", "<0-99999>", atoi, "%d", as_is, \
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HO_CFG_STR_HANDOVER2 \
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HO_CFG_STR_PENALTY_TIME \
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"Time to suspend handover for a subscriber after leaving this cell due to exceeding max distance;" \
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" see also 'handover2 retries'\n" \
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"Seconds\n") \
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\
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HO_CFG_ONE_MEMBER(int, hodec2_penalty_failed_ho, 60, \
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"handover2 ", "penalty-time failed-ho", "<0-99999>", atoi, "%d", as_is, \
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HO_CFG_STR_HANDOVER2 \
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HO_CFG_STR_PENALTY_TIME \
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"Time to suspend handover for a subscriber after a failed handover into this cell;" \
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" see also 'handover2 retries'\n" \
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"Seconds\n") \
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\
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HO_CFG_ONE_MEMBER(int, hodec2_penalty_failed_as, 60, \
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"handover2 ", "penalty-time failed-assignment", "<0-99999>", atoi, "%d", as_is, \
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HO_CFG_STR_HANDOVER2 \
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HO_CFG_STR_PENALTY_TIME \
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"Time to suspend handover for a subscriber after a failed re-assignment within this cell;" \
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" see also 'handover2 retries'\n" \
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"Seconds\n") \
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\
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HO_CFG_ONE_MEMBER(int, hodec2_retries, 0, \
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"handover2 ", "retries", "<0-9>", atoi, "%d", as_is, \
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HO_CFG_STR_HANDOVER2 \
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"Number of times to immediately retry a failed handover/assignment, before a penalty time is applied\n" \
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"Number of retries\n") \
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#define HO_CFG_ALL_MEMBERS \
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HO_GENERAL_CFG_ALL_MEMBERS \
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HODEC1_CFG_ALL_MEMBERS \
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HODEC2_CFG_ALL_MEMBERS \
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/* Declare public API for handover cfg parameters... */
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#define HO_CFG_ONE_MEMBER(TYPE, NAME, DEFAULT_VAL, VTY0, VTY1, VTY2, VTY3, VTY4, VTY5, VTY6) \
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TYPE ho_get_##NAME(struct handover_cfg *ho); \
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void ho_set_##NAME(struct handover_cfg *ho, TYPE val); \
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bool ho_isset_##NAME(struct handover_cfg *ho); \
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void ho_clear_##NAME(struct handover_cfg *ho); \
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bool ho_isset_on_parent_##NAME(struct handover_cfg *ho);
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HO_CFG_ALL_MEMBERS
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#undef HO_CFG_ONE_MEMBER
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