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add test_dyn_ts_favor_static_ts_as_target.ho_vty 

In a discussion about the effect of interference levels, I noticed that
there is not sufficient clarity about how strongly the preference of
static timeslots is ranked. This test helps to show what we have.

Related: SYS#5313
Change-Id: I0911cd74613045d9fbe29d04eaef036d32049b92
This commit is contained in:
Neels Hofmeyr 2021-07-11 22:15:13 +02:00 committed by laforge
parent 9c61446423
commit ea0b6b2ca9
2 changed files with 39 additions and 0 deletions
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1
tests/handover/handover_tests.ok
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@ -32,6 +32,7 @@ pass test_dyn_ts_congestion_tch_f_vs_tch_h.ho_vty
pass test_dyn_ts_congestion_tch_f_vs_tch_h_2.ho_vty
pass test_dyn_ts_favor_half_used_tch_h_as_target.ho_vty
pass test_dyn_ts_favor_moving_half_used_tch_h.ho_vty
pass test_dyn_ts_favor_static_ts_as_target.ho_vty
pass test_ho_to_better_cell.ho_vty
pass test_ho_to_better_cell_2.ho_vty
pass test_hysteresis.ho_vty

38
tests/handover/test_dyn_ts_favor_static_ts_as_target.ho_vty Normal file
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@ -0,0 +1,38 @@
# If both a static and a dynamic TCH/H (even without pchan switch!) are available, we always prefer static TS.
create-bts trx-count 1 timeslots c+s4 dyn TCH/H dyn TCH/H dyn TCH/H PDCH
network
bts 0
channel allocator ascending
set-ts-use trx 0 0 states * TCH/-H TCH/-H TCH/-H TCH/-H TCH/-H TCH/-H *
# the dynamic timeslot is already in TCH/H mode, and needs no pchan switch. It appears first in the list, hence it would
# be used first -- but we prefer using static TS when still available:
create-ms bts 0 TCH/H AMR
expect-ts-use trx 0 0 states * TCH/-H TCH/HH TCH/-H TCH/-H TCH/-H TCH/-H *
# ^
# Interference ratings do NOT influence whether a static or dynamic lchan (even without pchan switch) is going to be
# assigned.
network
bts 0
channel allocator avoid-interference 1
interference-meas level-bounds -115 -109 -103 -97 -91 -85
# 0 1 2 3 4 5
# Here the dyn TS lchan happens to have less interference. But still the choice to prefer static over dynamic weighs
# stronger. The static TS with least interference is picked.
# dyn TCH/H dyn TCH/H dyn TCH/H
expect-ts-use trx 0 0 states * TCH/-H TCH/HH TCH/-H TCH/-H TCH/-H TCH/-H *
res-ind trx 0 0 levels - 4- -- 1- 4- 3- 2- -
create-ms bts 0 TCH/H AMR
expect-ts-use trx 0 0 states * TCH/-H TCH/HH TCH/-H TCH/-H TCH/-H TCH/HH *
# ^
create-ms bts 0 TCH/H AMR
expect-ts-use trx 0 0 states * TCH/-H TCH/HH TCH/-H TCH/HH TCH/-H TCH/HH *
# ^
# now only dynamic TS are left. The one dyn lchan with least interference is picked
create-ms bts 0 TCH/H AMR
expect-ts-use trx 0 0 states * TCH/-H TCH/HH TCH/HH TCH/HH TCH/-H TCH/HH *
# ^