umts dccc chap8

8/12/2019 Umts Dccc Chap8

1/11

Dynamic Channel

Configuration Control(DCCC)

Chapter 8


2/11

DCCC Overview

Rate Re-allocation

Control of BE services

Adjust DCH rate based on

data throughput

Adjust DCH rate based on

link qualityAdjust DCH rate based on

congestion

UE State Transition

Sitch the !E state based on

activity

!" #$%

taken in

!E

RNC

NodeB

D" #C& #aken

in 'odeB

D" #$%

taken in the('C


3/11

UL Rate-allocation Base on !he !raffic "olume

Time

Payload

Event4AThd

TimetoTrigger4A

Reporting 4A

PendingTime4A

Reporting 4A

TimetoTrigger4A

PendingTime4A

Event4BThd

TimetoTrigger4B

PendingTime4B

Reporting 4B


4/11

UL Rate-allocation Base on !he !raffic "olume

!" #$%taken in

!E

RNC

NodeB

)b * Donsi+e

)a , !psi+e

Highest (ate , -in.requested bit

rate assigned by C'/ -a0 bit rate

supported by !E1

"oest (ate * Set by !"DCCC(A#E#HD

#he strategy and rate the !E ill be adjusted to is

deter-ined by DCCCS#2/ !"(A#EAD3"E$E"/

!"%4D(A#ECA"C and possibly !"%4D(A#E#HD


5/11

DL Rate-allocation Base on !he !raffic "olume

D" #$%

taken in

!#(A'

RNC

NodeB

)a * Donsi+e

)b , !psi+e

Highest (ate , -in.requested bit

rate assigned by C'/ -a0 bit rate

supported by !E1

"oest (ate * Set by D"DCCC(A#E#HD

#he strategy and rate the !#(A' ill be adjusted to

is deter-ined by DCCCS#2/ D"(A#EAD3"E$E"/

D"%4D(A#ECA"C and possibly D"%4D(A#E#HD


6/11

DL !ransmitter Coe #ower $easurement (%pplica&le only to DL)

#5#5

%easured

entity

#i-e

%easure-ent#hreshold 5

%easure-ent#hreshold 6

#5 * DlHyst#i-e7orE

#5

Ea EbPeriodic

Reports

Ea Periodic

Report

Event Absolute Threshold = maximum DL Power EventRelative Threshold + PO3

Event Relative thresholds are:

EventEaThd (For Measurement Threshold 1)

EventEbThd (For Measurement Threshold 2)

TCP can reduce to DLFULLCVRRATE (64K)

Also TCPPENALTYTIME (60s) started and no rate increasesallowed for this period of time after down rate event triggered


7/11

U' tate !ransition an tatus of the RRC Connection

Idle Mode

!#(A' Connected %ode

Camped on a UTRAN Cell Camped on a GSM/GPRS Cell

!(A8&CHCE""8&CH

CE""8DCH

.ith HS,

DSCH1

CE""87ACH

CE""8DCH

2S%

Connected%ode

2&(S &acket

#ransfer%ode

Cell

(eselection

!#(A' 4nter,(A#

Handover

2S% Handover

Establish ((Connection

(elease ((

Connection

(elease of

te-porary

block flo

4nitiation of

te-porary

block flo(elease ((C

connection

(elease ((C

connection

Establish ((C

connection

Establish ((C

connection


8/11

RRC tate witching

CE""8DCH .ith HS,

DSCH1

CE""8DCH

Switchin to CE!!"#C$ %&'

mo%ilit& manaement i(e(

$ando)ers and #irected Retr&

Switchin to CE!!"#C$ *with

$S-#SC$+ %&'

Tra,,ic )olme *.a E)ent+

B& timer *periodicall&

attempt to mo)e to $S Cell

when allocated CE!!"#C$+


9/11

C'LLDC* to C'LL+%C*

CE""8DCH

.ith HS,DSCH1

CE""87ACH

CE""8DCH

E)ent .% occrs

PS"NN"BE"STATE"TRANS"S0ITC$

#CCC"S0ITC$

PS"BE"STATE"TRANS"S0ITC$

SE# C9((%A"29S:4#CH

Ul#cccRateThd

#l#cccRateThdSE# DCCCTransition

timer %eins

123s de,

.B Conter 4 5 CE!!"#C$ to CE!!"6AC$ transition time / *Time to trier 7 Pendin

time a,ter Trier+8 State trans tra,, rednd coe, 9 *Rond down+

Increment .B

conter when

%elow T:Mthresholds

*13;. %&tes de,+

drin

transition timer


10/11

C'LL+%C* to C'LL#C*

CE""87ACH

E)ent .% occrs

PS"NN"BE"STATE"TRANS"S0ITC$

#CCC"S0ITC$

PS"BE"STATE"TRANS"S0ITC$

SE# C9((%A"29S:4#CH

Ul#cccRateThd

#l#cccRateThdSE# DCCC

Transition

timer %eins

123s de,

.B Conter 4 56AC$ to PC$ Transition time / *6AC$ to PC$ .B time to trier 7 6AC$ to

PC$ .B Pendin Time a,ter trier+8 State trans tra,, rednd coe, 9 *Rond down+

Increment .Bconter when %elow

T:M thresholds *

%&tes ,i


11/11

C'LL#C* to C'LLUR%

!(A8&CH

CE""8&CH

CE""87ACH

Cell update with causevalue reselection

Timer CE!! RESE!ECTIN TIMER

%eins and conts the Cell Update

messaes with the case )ale

reselection

I, the nm%er o, Cell Update messaes

e

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