November 2001

Peter A. Dahl, Verizon WirelessSlide 1

doc.: IEEE 802.11-01/635r1

Submission

CDMA2000

[the other 3G Standard]

Peter Dahl

Verizon Wireless

Walnut Creek, Ca.

November 2001

Peter A. Dahl, Verizon WirelessSlide 2

doc.: IEEE 802.11-01/635r1

Submission

3G ≠ UMTS

First things first….

November 2001

Peter A. Dahl, Verizon WirelessSlide 3

doc.: IEEE 802.11-01/635r1

Submission

There is an alternative…

• CDMA2000 1xRTT– 1xRTT – utilizes same spectrum as IS95 CDMA (1.25MHz)

– 1xRTT – has double the voice capacity of IS95 CDMA.

– 1xRTT – meets ITU criteria for a 3G standard.

– 1xRTT – peak burst rate 153.6Kbps (typical 40-60Kbps).

– 1xRTT – includes Mobile IPv4 as part of the specification.

– Evolution Path• 1xRTTRelA – peak burst rate 307.2Mbps.

• 1xEVDO – peak burst rate 2.4Mbps.

• 1xEVDV – peak burst rate 2.4Mbps, and double the voice capacity.

• 3xRTT – same spectrum needs as UMTS (5MHz), equivalent data throughput.

November 2001

Peter A. Dahl, Verizon WirelessSlide 4

doc.: IEEE 802.11-01/635r1

Submission

Standards and Carriers…

• Standards Bodies– 3GPP2 – actually do the work.

– EIA/TIA – rubber stamp and publish the docs.

– CDG – specify interoperability criteria.

• Carriers– US: Verizon Wireless, Sprint PCS.

– Asia: KDDI, SK Telecom, China Unicom.

– Europe: Ukraine ?

November 2001

Peter A. Dahl, Verizon WirelessSlide 5

doc.: IEEE 802.11-01/635r1

Submission

cdma2000 Network Architecture

Homecdma2000Network

R-P

IP Network

SS7Network

Visitedcdma2000Network

HLR

VisitedAAA

HomeAAA

IOS

PSTN

BSC(cdma2000-1x)

1x------------1xEV-DO

RNC(1xEV-DO)

Multi-mode BTSMSC/VLR

PDSN/FA HA

Voice

Data

AbbreviationsAAA Authentications, Authorization and AccountingHA Home AgentFA Foreign AgentIOS Interoperability StandardR-P Radio Packet InterfaceRNC Radio Network ControllerPDSN Packet Data Serving Node

November 2001

Peter A. Dahl, Verizon WirelessSlide 6

doc.: IEEE 802.11-01/635r1

Submission

Mobile IP registration

• Once a MN has requested Mobile IP service and received an Agent Advertisement message, it must perform Mobile IP registration.

The RRQ and RRP comprise the Mobile IP registration process

Registration Takes place through a two message exchange:

FAFA

HAHA

AAAAAAMNMN

11 22

33

44

44

(1) MN sends Registration Request Message (RRQ) to FA

(2) FA authenticates the MN by sending an Access Request Message to the AAA upon receiving RRQ.

(3) If AAA authenticates MN, the RRQ is passed onto the HA.

(4) The HA responds with a Registration Reply Message (RRP).

November 2001

Peter A. Dahl, Verizon WirelessSlide 7

doc.: IEEE 802.11-01/635r1

Submission

Return data path

WLAN and CDMA2000 – Key Enablers ?

HA

AAAh 1xRTT Home Network

Foreign WLAN Network

PDSN

1. “PDSN-lite”PDSN functionality for WLAN

connected MNs

AP

2. Mobility ClientInterface and mobility management (MIPv4)

Outgoing data path

IEEE 802.11a/b/g

November 2001

Peter A. Dahl, Verizon WirelessSlide 8

doc.: IEEE 802.11-01/635r1

Submission

Some Goals…

• Seamless roaming (no user interaction).

• One pass authentication (standards necessary ?).

• Robust encryption on the “local link”.

• International capability (.11 is 3G agnostic).

• WLAN (actually link layer) agnostic.

• Single carrier can’t own a significant number of hot-spots, so roaming agreements will be required.

November 2001

Peter A. Dahl, Verizon WirelessSlide 9

doc.: IEEE 802.11-01/635r1

Submission

3G ≠ UMTS

…and remember