PTT/PoCPTT/PoCPush to Talk over CellularPush to Talk over Cellular- Handset PerspectiveHandset Perspective

1 © NOKIA PoC general description.PPT / February 2004

Niraj GandhiProduct Marketing ManagerNokia Mobile PhonesCDMA BU

CDG Technology Forum – PTTJune 2004

2 © NOKIA PTT/CDG PTT Event / June 2004

Agenda• PTT Market landscape in CDMA

• Fragmentation• Interoperability effects

• PTT for handsets• Key Features• PTT Client• Specific Requirements• Integration Challenges

• Nokia’s CDMA PTT strategy

3 © NOKIA PTT/CDG PTT Event / June 2004

Current State of Affairs in CDMA

• High interest level in operators, end users as well as the media

• Current PTT market is fragmented with proprietary solutions

• Customized SIP and/or RTP based• Proprietary clients

• No interoperability between systems

• Limited handset availability• Hurts carriers• Hurts end users

• Some publicly announced launches in CDMA• Verizon• Sprint PCS• Alltel

• Operators who have launched are seeing some success

• Targeting consumer segment without interoperability is difficult

4 © NOKIA PTT/CDG PTT Event / June 2004

Example of Fragmentation in CDMA: MMS

Carrier D Carrier ECarrier CCarrier BCarrier A

IMAP StandardLightsurfStandardStandardMMS

2 non-standard CDMA picture messaging implementations

For manufacturers, 3 MMS software implementations

Most of CDMA Market has adopted MMS

5 © NOKIA PTT/CDG PTT Event / June 2004

CDMA Fragmentation in PoC

Carrier D Carrier ECarrier CCarrier BCarrier A

Version 4 Version 5Version 3Version 2Version 1PoC Client

5 Carriers, 5 Software Streams

50+ Carriers, 50 Software Streams?

Impact on resources for manufacturers and carriers.

6 © NOKIA PTT/CDG PTT Event / June 2004

Impact of Fragmentation on R & D

Development Cost

Development Time

Testing Time

Testing Cost

Time to Market

Carrier D Carrier ECarrier CCarrier BCarrier A

Identical hardware platform across all carriers

Identical software platform core across all Carriers

Standards-based MMS implementation

PoC implementation, ver. 1

R & D cost of PoC – ver.2

R & D cost of MMS – Lightsurf

R & D cost of PoC – ver. 3

R & D of MMS – IMAP

R & D of PoC – ver. 4

PoC – ver. 5

Core R & D Cost

7 © NOKIA PTT/CDG PTT Event / June 2004

Learning from SMS: Interconnections, Roaming, IOP are key for mass market growth of mobile services

SMS penetration in USA

0%

5%

10%

15%

20%

25%

30%

35%

Dec.99 Jun.00 Dec.00 Jun.01 Dec.01 Jun.02 Dec.02 Jun.03

Date

% u

sin

g S

MS

US SMS interconnections

agreements

Source: Nokia

No SMS interconnections

MMS interconnections and roaming

§ Operators in 20 countries so far have announced national interconnection agreements§ International (GPRS) roaming

coverage ramping up

MMS Interoperability

§ Between different vendors' handsets and infrastructure§ Standardization is the key enabler:

good progress in OMA§ Focus now to test and implement

IOP in products

Optus: 100 % increase in MMS traffic after interconnections put in place

SMS market in USA grew 300-400% Once interconnections were put in place

8 © NOKIA PTT/CDG PTT Event / June 2004

Agenda• PTT Market landscape in CDMA

• Fragmentation• Interoperability effects

• PTT for handsets• Key Features• PTT Client• Specific Requirements• Integration Challenges

• Nokia’s CDMA PTT strategy

9 © NOKIA PTT/CDG PTT Event / June 2004

PTT Key-Features

• ‘Always-on’ connection – instant communication

• One-to-one and one-to-many communication

• Buddies and group management from the handset

• ‘Floor control’ & talking person’s ID• Barge & Alert calls• Presence information

10 © NOKIA PTT/CDG PTT Event / June 2004

PTT Client

• Is the PTT interface for the user• Generally launched during phone power-on• Always running in background• Periodically registers in the server – keep

alive• Receives presence updates• Receives incoming PTT calls

Specific Handset Requirements For PTT

• Dedicated PTT button• High quality speaker• Intuitive, easy to use UI

11 © NOKIA PTT/CDG PTT Event / June 2004

PTT Client Architecture on Handset

CDMA2000 1X

PPP

IP

UDP

SIP RTP

PTT Control VoCoder

UI

Mobile Channel

Protocol Stack

Client Application

- Target Handset integration layer through client application’s exposed APIs

12 © NOKIA PTT/CDG PTT Event / June 2004

Integration Challenges

• Battery life• Realtime in nature – always-on

• integration with a big chunk of handset functionality – proper UI design

•Phonebook•Call log•Feature interactions with other data applications

• Performance issues – Delays, buffering, latency

13 © NOKIA PTT/CDG PTT Event / June 2004

Agenda• PTT for handsets

• Key Features• PTT Client• Specific Requirements• Integration Challenges

• PTT Market landscape in CDMA• Fragmentation• Interoperability effects

• Nokia’s CDMA PTT strategy

14 © NOKIA PTT/CDG PTT Event / June 2004

Nokia’s strategy for PoC

• Support industry- and OMA-process to define an open, multi-vendor, IMS-based PoC standard

• Implement one pre-standard PTT client compatible with the prominent server in CDMA market

• Upgrade to OMA PoC standards based client

15 © NOKIA PTT/CDG PTT Event / June 2004

Thank You!!