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cdma

Two types of cdma reverse channels : traffic channel, access channel

T-1 > 1.533Mbps, E-1 > .!3"Mbps

#s $ ms, forward

Ms $ bs, reverse

%hsycal channel &'-(5)

forwardforward pilot channel

forward sync channel

forward pa*in* channel

forward traffic channel

reverse

access channel

reverse traffic channel

e+tended handoff direction messa*e ehdminternational mobile sbscriber identity imsi

international mobile e/ipment identity imei

incomin* call

base station mobile station

an actal pa*e 0 pa*e respons

*eneral pa*e messa*e $ pa*e response messa*e

#ase station ac2 $channel assi*nmenthannel assi*nment messa*e $

base station ac2 $

mobile station ac2service ne*otiation

'ervice connect messa*e $

service connect complete messa*e

#ase station ac2 $

4t*oin* call

#ase station mobile stationori*ination

ori*inatin* messa*e

#ase station ac2 $hannel assi*nment messa*e $

traffic channel confirmation

#ase station ac2 $

mobile station ac2

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service ne*otiation 0 connect completeb

'ervice connect messa*e $

service connect complete messa*e#ase station ac2 $

End call#ase station mobile station

mobile release order

#ase station ac2 $#ase station release order $

'ync channel messa*e $

andoff#ase station mobile station

mobile re/est handoff

pilot stren*th measrement messa*e

#ase station ac2 $system athori6e the handoff

andoff direction messa*e $ mobile station ac2

mobile implement handoff

handoff completion messa*e#ase station ac2 $

nei*hbor list pdate 0 handoff is complete

7ei*hbor list pdate messa*e $

mobile station ac2

8on* code

nt2 identifi2asi ms'hort codent2 identifi2asi bs

9alsh codent2 identifi2asi 2anal

t

'hort callnt2 men*hitn* call sccess ratio, all setp time

8on* calldrop call rate, Ec;&o

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%n $ psedorandom noise

The 2ey technolo*y for cdma !!! 1 Eb;7t A #it ener*y;Effective noise power spectrm density power control

al*orithm

pilot > Ec;&o A hip ener*y;Total power spectrm density of carrier power controlal*orithm

Bm interface

Msc bs

cm service re/est

)ssi*nment re/est $ assi*nment complete

onnect $

andoff

1. fnction

. 4 concept-pilot set

-search window

-4 parameter-4 process

3. intra fre/ 4

&nter fre/ 4C. 4 si*nalin* flow

5. confi* of 4 data

9alsh code

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%ilot $ !

'ync $ 3

%a*in* $ 1-D

Traffic measrement analysis

all set p failre- msc reection

- resorce allocation failre

- captre failre of reverse traffic channel preamble- si*nalin* e+chan*e failre

- besides the processin* similar to captre failre of reverse T preamble

all drop- poor Ec;&o

- hi*h reverse E=

- interference, improper confi*ration of handoff parameter, incorrect search window,

incorect nei*hbor cell

Traffic channel on*estion- walsh insfficiency

- insfficient forward power

- insfficient reverse power- channel insfficiency

8in2 bd*et model

T+;=+ power $ feeder loss $ antenna *ain $ soft handoff *ain $ interferenceallowance $ fadin* allowance $ path loss $ antenna *ain $ T+;=+ power

#s Ms orward $

reverse

all set p ot*oin* call

Msc bs ms

ori*ination messa*e

M service re/est)ssi*nment re/est $

E)M $

'M $'M

assi*nment complete

)ntenna selection

ense rban ; rban - 5 m

- dal polari6ation

- *ain 15 d#i

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- hori6ontal #9 "5

'brban - C! m- vertical polari6ation

- *ain 1F d#i

- hori6ontal #9 (!

=ral - "! ; D! m

- vertical polari6ation- *ain : directional $ 1F d#i, omni $ 11 d#i

- hori6ontal #9 1!

The for state of M' : initiation, idle, access, online service

Geadaan normal =+ H T+ A -D5 I -F5

&nterference

forward : ce2 E=, reverse : ce2 =''&all setp failre $ call setp time, call access%ilot poltion $ over shootin*. The solltion is ma2e stron* %7

apacity $

1. analysis all the networ2 2pi

plannin*

- bts

how manyJ, how abot covera*eJ,- bsc

ardware &nstallation'oftware installation 0 data confi*ration

=74

E+ample for 2pi

- all 'etp 'ccessfll =ate

- voice ori*ination sccess rate- voice terminatin* call sccess rate

- soft handoff sccessfll rate

- hard handoff sccessfll rate-

To solve the problem find the 2pi first, becase it can save many.

rive test

- 'in*le dt

- lster dt

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- atp

%oor overa*e : =+ H T+ abot -D3

7ear #T' Ec;&o abot -F db, =+ power abot -5! dbm

1. ross feeder

. Ec;&o,