When Are the 1xEV-DO Rev A Parameters Negotiated/Obtained?

During day-to-day activities of an AT in a 1xEV-DO Rev A system

1xEV-DO Rev A system can optimally page the AT for incoming traffic. Every AT must first acquire a 1xEV-DO Rev A system.

AcquireSystemAfter system acquisition, everyAT must negotiate a session with

Unlike BE application, VoIP requires faster paging.

System

Page

Registerthe 1xEV-DO Rev A system.

with theSession Negotiation may vary based

Systemon ATs capabilities.

Every AT must monitor and update Periodic Overhead Messages

in both Idle and Connected state.

Send &

ReceiveDataSend and Receive Data.

The criteria to maintain the data call:

Maximize throughout for BE applications

Minimize latency and jitter for VoIP

Optimize handoff delays for all applications

Keep up with theSystem

Access 1xEV-DO Rev A system to establish air link recourses.

Access the Unlike BE application, VoIP System requires faster system access.

Setup Call Set up air link recourses and IP address.ContextUnlike BE application, VoIP requires:

Air link QoS Flows with certain characteristics

Auxiliary A10 Flows between PCF and PDSN

Initial AT Power up with no UATI assigned to the AT.

UATI assigned; Session is open with standards default parameter values.

Non-Default protocols, applications, parameters and values are negotiated. Multiple Personalities may be negotiated.

AT Ready to Exchange Data on Radio Stream.

AT Ready to Exchange Data on Service Stream. User initiates data call.

1xEV-DO Rev A air link recourses between AT and AN are successfully set up. AT ready to negotiate PPP.

PPP negotiation successful and AT is assigned IP address. AT ready to exchange packet data. Typical 1xEV-DO Rev A AT-OriginatedCall Flow for Best Effort Traffic

ATAN - BTS + BSCPDSNCore IP Network

(integrated PCF)(Simple IP)(or IMS core)

1

Session Setup

1

Establishment

Session Negotiation2

Session

2

Session Authentication

3

RouteUpdate/ConnectionRequest3A11-Registration RequestMain A-10

4

(System Access)

ACAck

Setup5

Establishment

A11-Registration Reply

6

TrafficChannelAssignment

7Connection

8

Pilot + DRC

9

RTCAck

10

TrafficChannelComplete

11

PPP Negotiation

12

Legend:

Packet Data Transfer

13

AC

CC

FTC

RTC

Typical 1xEV-DO Rev A AT-Terminated Call Flow for Best Effort Traffic

ATAN - BTS + BSCPDSNCore IP Network

(integrated PCF)(Simple IP)(or IMS core)

Initial AT Power up with no UATI assigned tothe AT.

Non-Default protocols, applications, parameters and values are negotiated. Multiple Personalities may be negotiated. A12 authentication successful.

AT Ready to Exchange Data on ServiceStream.

1xEV-DO Rev A air link User initiates data call. recourses between AT

and AN are successfully set up. PPP negotiation is successful and AT is assigned an IP address.AT is ready to

No 1xEV-DO Rev A air exchange packet data. link recourses allocated

after RLP inactivity timer. AT is in IdleState.

A Page message is sent to the AT during the ATs wakeup cycle, when there is data bound to the AT.

Session Establishment

Connection Establishment

Main A10 Establishment

PPP Negotiation

Packet Data Transfer (Connected State)

Idle State

Ingress Packet Data

Page Message3

RouteUpdate/ConnectionRequest

A11-Registration Request

ACAck

A11-Registration Reply

TrafficChannelAssignment

Pilot + DRC

RTCAck

TrafficChannelComplete

Packet Data Transfer (Connected State) Legend:

AC

CC

1

FTC

RTC

2

3

4

5

6Connection Establishment(SystemPage)AfterPageMessagereceived thecallflowissameasSystemAccess.

7

8

9

10

11

12

13

14

15

16

17

Typical 1xEV-DO Rev A Call Flow for VoIP Registration

ATAN - BTS + BSCPDSNCore IP Network

(integrated PCF)(Simple IP)(or IMS core)

Initial AT Power up with no UATI assigned to the AT.

Non-Default protocols, applications, parameters and values are negotiated. Multiple Personalities may be negotiated. A12 authentication is successful.

AT Ready to Exchange Data on Service Stream. Power up or explicit VoIP Registration is invoked.

After air link Connection, PPP and Main A10 instance are negotiated. AT is ready to negotiate Radio QoS, set up TFTs and negotiate ROHC.

After the successful QoS negotiation for both SIP signaling and RTP media Flow parameters, AT is now ready to turn ON Reservation for SIP signaling Flow to send SIP Registration.

1

Session Establishment2

Idle State3

Connection EstablishmentMain A10 Establishment

PPP Negotiation

Radio QoS Establishment4

Auxiliary A10 Establishment

RSVP Messages (Setup TFTs)

ROHC Negotiation

SIP Registrar (or P-CSCF in IMS domain) Discovery

Turn ON Reservation (for SIP)

SIP Registration

Idle State

1

2

3

4

5

6

7

8and

9

Establishment

10

11

12

13QoS

and Flow specific parameters negotiated. VoIP (application specific) QoS Flows SIP Registration

AT is ready to make and receive VoIP calls.Categorization of 1xEV-DO Rev A Parameters

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ta

Se

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S

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n

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3

Source BTS

(or Cell)

User Data

Abis

BTS

a

User DataA10

AbisA11

Source BSCPDSN

(or RNC)A12

B

A18

A13

A17

A19

A16

ATba

AAA

Signalling

User Data

Target BTSTarget BSC

NOTE: The categorization of 1xEV-DO Rev A Parameters is for student comprehension and is not a part of any standards taxonomy.