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Soft and Hard blocking measurement procedure
Content
1
Objective............................................................................................22
Scope.................................................................................................23
Concept..............................................................................................23.1.1
Soft Blocking
(Concept)......................................................................23.1.2
Soft Blocking
(for!l"e).....................................................................33.2
#"r$ Blocking
(Concept).....................................................................33.2.1
#"r$ blocking
(for!l"e)....................................................................3
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1 Objective
T%e p!rpo&e of p!bli&%ing t%i& $oc!ent i& to
cl"rify t%e concept of %"r$ "n$&oft blocking in c"&e of 'S
net*ork +,. T%i& $oc!ent *ill cl"rify t%econcept of t%e&e
ter& for 'S net*ork engineer& "n$ f!rt%er ipleenting
t%e &"e in $"ily -.
2 Scope
T%e &cope of t%i& $oc!ent i& cl"rify t%e&e
ter& "n$ propo&e t%e for!l"efor t%e &"e.
T%e ter &oft "n$ %"r$ blocking "re not !&e$ in
/ric&&on BSS0 %o*ever "&t%e&e v"l!e& %"ve to be
reporte$ in $"ily - *e %"ve $evelop t%efor!l"e for t%e &"e.
3 Concept
or " 'S net*ork0 C# %"& &"e iport"nce "& *e %"ve TC#
in voicenet*ork i.e. it i& t%e b"&ic c%"nnel *%ere " 'S c"l
origin"te&. #o*evert%ere "re &oe f!n$"ent"l "n$ concept!"l
$ifference& bet*een t%e t*o.
TC# "llo*& only one !&er "t " tie *%ere"& t%ere c"n
be "ny
!&er& in one C# &i!lt"neo!&
or"l 4oice c"ll *ill not !&e ore one TC# for "king " c"l
i.e.
t%ere i& no concept of -!lti&lot p%enoen"0 %o*ever
t%i& i& b"&iccriteri" for 'S net*ork perfor"nce0 in
f"ct t%i& i& one of t%e "in
+,& for 'S net*ork perfor"nce.
TC# c"n not be pre5epte$ *%ere"&0 " C# c"n be pre5epte$
if
t%e c%"nnel i& nee$e$ for t%e voice tr"fiic.
So t%e concept of blocking i& bit $ifferent in c"&e of
'S net*ork.
3.1.1 Soft Blocking (Concept
T%e ter &oft blocking e"n&0 " -S %"& "&ke$ for
$e&erving re&o!rce&(C#) b"&e$ on %i&
-!lti&lot cl"&& b!t it i& not "llo*e$ to get "ll
re&o!rce&fro t%e BSS $!e to t%e re"&on0 free
re&o!rce& "re not "v"il"ble. ,n t%i& *"y
BSS "llo*& " -S to "ke 'S &e&&ion b!t "t re$!ce$
c"p"bility in ter& ofb"n$*i$t% "v"il"ble for t%e 'S
&e&&ion. T%ere "re co!nter& "v"il"ble
in/ric&&on BSS &y&te *%ere *e c"n e"&!re0
t%e&e "re c"lle$ -!lti&lotco!nter& "n$ t%ey "re
-6T,7210
-6T,7220
-6T,7310
-6T,7320
-6T,7330
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-6T,7810
-6T,7820
-6T,7830
-6T,7880
MUTIL51, New counter in BSS06A
MUTIL52, New counter in BSS06A
MUTIL53, New counter in BSS06A
MUTIL54, New counter in BSS06A
MUTIL55, New counter in BSS06A
ote95 -ore expl"n"tion of t%e&e co!nter& i&
"v"il"ble in 7/:
3.1.2 Soft Blocking (formulae
T%e propo&e$ et%o$ "n$ for!l"e for t%e e"&!ring &oft
blocking i& "&!n$er
!otal !ime slots re"uested # ($%!&'12$%!&'22 )2
($%!&'13$%!&'23$%!&'33 )3
($%!&'1*$%!&'2*$%!&'3* $%!&'** )*
($%!&'1+$%!&'2+$%!&'3+ $%!&'*+ $%!&'++ )+
!otal time slots re"uested,but,not,allocated
#($%!&'12$%!&'23$%!&'3*$%!&'*+ )1
($%!&'13$%!&'2*$%!&'3+ )2 ($%!&'1*$%!&'2+ )3
$%!&'1+)*
Soft blocking # !otal time slots
re"uested,but,not,allocated-!otal !imeslots re"uested.
3.2 Hard Blocking (Concept
T%e %"r$ blocking concept i& not "pplic"ble on t%e C# level
$!e to &%"ringof &"e C# bet*een &i!lt"neo!&
!&er&. T%e %"r$ concept intro$!ce$%ere *ill be "t TB level.
#"r$ blocking e"n& " 'S en"ble$ terin"l *"&!n"ble to "ke "
TB for $"t" tr"n&fer i.e. TB i& not e&t"bli&%e$ for
$"t"tr"n&fer.
3.2.1 Hard blocking (formulae
T%e propo&e$ for!l"e for t%e %"r$ blocking i& "&
100*FAILDLTBFEST/DLTBFEST, where
DLTBFEST: - T%e tot"l n!ber of "ttept& to e&t"bli&%
" $o*nlink TB.
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/&'0'!BS! ,T%e tot"l n!ber of "ttept& to
e&t"bli&% " $o*nlink TBt%"t re&!lte$ in " f"il!re $!e
to l"ck of re&o!rce&. 7"ck of re&o!rce& co!l$e"n9
no C# "lloc"te$ on *%ic% t%e TB co!l$ be re&erve$; no
T,&"v"il"ble (i.e. "xi! "llo*e$ n!ber of TB re&erve$ on "ll
"lloc"te$C#); t%e C# *"& pre5epte$ before it co!l$ be
re&erve$. &oe ot%erc%"nnel f"!lt t%"t prevente$ t%e
re&erv"tion; conge&tion in -C (i.e. no fr"en!ber co!l$ be
ret!rne$); conge&tion in t%e C prevente$ t%e re
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