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Advanced Contrast Between Gprs and Cdma Data One Packet

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Advanced Contrast between GPRS and CDMA One Packet Data

Puneet Kumar and Arvind.S S.R.M Engineering College, Chennai, Tamil Nadu

Abstract:-
Proliferated needs of the growing market regarding better data packet and voice services is looking to be met by deploying packet data services. This feature involves a complete upgrade of the network. The path to achieve this greatly differs between GSM and CDMA networks. This paper gives an advanced comparison between the GSM and CDMA networks in the path to deploying packet data with essential features of cost implications, time, infrastructure and compatibility in various handsets, speed and implementation methods. Detailed procedure of CDMA to 3G CDMA path is mentioned along with critical comparison with GSM path at each and every stage.

1. INTRODUCTION
Wireless operators around the globe are launching or preparing to launch packet data services over mobile networks. Deploying packet data is a cost-effective way for mobile carriers to balance the network resources required to sufficiently meet the needs of the growing market for voice services and the potentially large mobile data market. The path to high-speed packet data differs greatly, however, between GSM and CDMA networks. GSM operators require a new data backbone, base station upgrades and new handsets to offer packet data services. Packet data in CDMA One networks is standard and was built into the IS-95 standard from its inception. All CDMA One handsets and base stations are packet data capable today, and the networks utilize standard Internet protocol (IP) based equipment. GSM is circuit- based,

requiring a new packet data backbone and new handsets. In order to take advantage of higher speed packet data, the GSM and CDMA One upgrade paths include higher speed handsets, which will be commercially available within the next 12 to 18 months. The next major upgrade for GSM is GPRS which is 2.5G, while the next major upgrade for CDMA is 1X, which is 3G. We will examine some of the critical factors affecting an operator's ability to migrate to higher speed services and to implement a packet backbone. One of the most critical factors is the forward and backward compatibility of the handsets--the capability of an older handset to operate on an upgraded network and the capability of a newer handset to operate on an older network. The commercial availability of the packet capable handsets is the second crucial factor. The Second factor is the cost and ease of integration of the packet data network and the ability for third parties to implement services on these data backbones to offer high-speed Internet services. 2. DEFINING THE MARKET
Currently, mobile data rates are low on both GSM at 9.6 kbps with Circuit Switched Data and CDMA One 95A networks at 14.4 kbps in either circuit or packet switched modes. These speeds are far lower than those available to a typical user of a PSTN wire-line network. However, we are now entering a period that will see new and faster non-voice mobile services. For example, anticipating an increased demand for data services, Korean and Japanese operators SK Telecom, Hansol, DDI and IDO have already implemented commercial CDMA One 95B packet data at speeds of 64 kbps.

|Packet data Equipment |GSM CSD (Circuit |GPRS (General Packet |EDGE (Enhanced Data |IMT-2000 CDMA Direct |
|requirements |Switched Data) |Radio Service) |rates for GSM Evolution)|Spread (CDMA DS) |
|Handset |No packet data |New handsets |New handsets |New handsets CDMA DS |
| |capability -Single-Mode |GPRS-- enabled handsets |EDGE-- handsets will |handsets will work at up|
| |phones |will work on GPRS |work at up to 384Kbps on|to 2Mbps and only on 3G |
| | |enabled networks and |EDGE enabled networks on|networks-Quad-Mode |
| | |9.6Kbps on GSM networks |GPRS enabled networks |phones |
| | |using CSD-Dual Mode |and 9.6Kbps on GSM | |
| | |phones |networks using | |
| | | |CSD-Tri-Mode phones | |
|Infrastructure |No packet data |New packet overlay/ |Further backbone |New infrastructure roll |
| |capability |backbone needed for |modifications required |out with existing |
| | |circuit switched network| |interconnect |
|Technology Platform |Current GSM TDMA |GSM TDMA platform with |Modulation changes |New CDMA infrastructure |
| |Technology |additional packet |required to GSM TDMA | |
| | |overlay |platform | |

The GSM data evolution path will always require new network infrastructure and new phones. Every one of the future GSM data services from GPRS to EDGE to WCDMA (and High Speed Circuit Switched Data and Wireless Application Protocol) requires the purchase of a new mobile phone to take full advantage of the enhanced functionality, but all handsets will still be able to operate on the GSM network, allowing voice and CSD at 9.6Kbps. The GSM roadmap for handsets is not forward and backward compatible. This means that GPRS handsets will not work on EDGE or 3G CDMA DS base stations. A GSM carrier must make new investments in base stations for GPRS, EDGE and 3G CDMA DS, while the packet backbone may only need minor modifications after deploying GPRS. GSM also requires the implementation of IP based network elements to allow a packet overlay onto a circuit switched network. The links between the existing GSM network infrastructure entities and the IP backbone are comprised of proprietary hardware such as the Gateway GPRS Service Nodes (GGSNs) that link the Internet to the IP backbone. These are MODIFIED IP routers.
Using standard IP routers would have given network operators and corporate customer’s vendor choice, interoperability, economies of scale with existing purchasing patterns and the like. The biggest issue with GGSNs is that new pieces of equipment raise security concerns with IT departments. This can hinder the deployment of a mobile data application due to the need for integration and testing. Since network operators are interested in the data traffic, this barrier to the sale presents a challenge for the corporate work force. Discussions with suppliers of both standard IP routers and GGSNs have indicated that a GGSN will typically cost three to four times more than the equivalent IP router, presenting another sales barrier. Network operators are likely to subsidize the GGSN element- perhaps even giving it away free of charge with a minimum number of GPRS phone sales.
The use of the proprietary GGSNs in the GPRS solution also has other cost implications for network operators and third party developers. GGSNs will not realize the same economies of scale of the Internet network elements that the CDMA One solution does. Corporations all over the world are implementing standard routers in their corporate landline Intranets and for standard Internet access. IT departments are building knowledge and skills with standard IP network equipment. The addition of a new version of a router -GGSNs-- will require IT employees to learn new non-standard router configurations specific to each GGSN vendor.

.
The CDMA One packet data implementation, on the other hand, utilizes standard routers, which are the same ones used in the landline Internet. The same IT professionals working on a corporate landline Intranet could transfer the same skills to a mobile Intranet based on CDMA One. This will result in greater revenues for operators and lower costs for corporations. Operators will not need to be integral in developing every application that is used on its network, and corporations will require fewer resources to develop applications.
GPRS will also eventually require Mobile IP in order to offer full mobility within the Internet without Mobile IP; the GPRS network will not be able to identify a node such as a portable computer that has a standard IP address. For example, GPRS subscribers with portable computers will not be able to log into a corporate network using GPRS alone. The GPRS network will require Mobile IP to allow the corporate network to authenticate the IP address of the portable computer. Since Mobile IP requires more network resources, this may lead to a reduction in the volume of data available on each packet as the transport layer information increases. The implication is that GPRS networks will be less efficient than CDMA One networks. CDMA One uses Mobile IP as its transport layer.
.
[pic]
|Packet Data |95A |95B |IMT-2000 |IMT-2000 CDMAMulti-carrier |
|Equipment | | |CDMAMulti-carrier 1X(MC|3X(MC 3X) |
|requirements | | |1X) | |
|Handset |Standard |Standard in chipsets |1X standard in chipsets|New handsets |
| |95A handsets will work |1999 |in 2001 |3X handsets will work on 95A |
| |on all future networks:|95B handsets will work |1X handsets will work |networks at 14.4Kbps, 95B |
| |95B, 1X and 3Xat |on 95A networks at |on 95A networks at |networks at speeds up to |
| |14.4Kbps-Single-Mode |14.4Kbps and 95B, 1X |14.4Kbps, 95B Networks |114Kbps and 1X networks at |
| |phone * |and 3X systems at |at speeds up to 114 |speeds up to 307 Kbps and 3X |
| | |speeds up to 114 |Kbps and 1X and 3X |networks at 2Mbps-Single-Mode |
| | |Kbps-Single-Mode phone |networks at speeds up |phone |
| | | |to 307Kbps-Single-Mode | |
| | | |phone | |
|Infrastructure |Standard |New software in BSC |1X requires new |Backbone modifications New |
| | |(Base Station |software in backbone |channel cards at base stations|
| | |Controller) |and new channel cards | |
| | | |at base station | |
|Technology |CDMA |CDMA |CDMA |CDMA |
|Platform | | | | |

CDMA One is based on IP standards, giving it an inherent advantage over GPRS. Current CDMA One phones have the standard IP protocols built into the handset, and CDMA One networks use IP addressing within the network without the need for an additional IP layer being added to the packet transport layer. This allows for a high degree of backward and forward hardware compatibility for network operators looking to implement new higher speed data services and evolve to 3G, which is an IP-based standard.
Today's CDMA One networks already incorporate an IP gateway referred to as the Inter-Working Function (IWF). This is essentially a standard IP router built into the network, routing IP packets without the need for them to be handled by an analog modem. The IWF receives information from the mobile phone in Point to Point Protocol (PPP) format and assigns a temporary IP address for that session. Experts estimate the cost for rolling out a full network upgrade for 45 million POPS from GSM to GPRS is about US $125 million. Adding packet data to a CDMA network is far less expensive: less than $5 million dollars. CDMA One phones and base stations already have IP protocols built in. Having the IP gateway as a standard feature NOW therefore represents a significant advantage to CDMA One network operators. The CDMA One configuration is based on existing corporate infrastructure standards. Certain network infrastructure manufacturers have stated that their new CDMA One infrastructure allows the incorporation of ANY standard router from any manufacturer into the IWF. A standard RADIUS server undertakes billing information and authentication in the network, and messaging is handled using SMTP. Integrating high speed CDMA One data in a corporate network will be much easier than with GPRS, as the infrastructure of CDMA One is based on what is considered to be standard corporate infrastructure components. Since there is backward and forward compatibility in the CDMA One handsets, any handset can operate on any CDMA One network, (assuming the same frequency or the use of multi-band phones) of that CDMA One network (95A, 95B or 1X) at the highest available speed possible by both the handset and network. For example, 1X handset will be capable of 14.4 Kbps on a 95A network and 64 Kbps on a 95B network. A 95A handset will operate on a 95A, 95B or a 1X network, but only at 14.4Kbps.
[pic]

* Across the raw air link; assumes 8 concatenated channels. With GPRS, the figures also assume no error correction on data transferred.
^ Indicates initial/ current support (4 slots for GPRS)
" The typical data rate available to an individual user
We can see from this analysis that the maximum theoretical speeds available over GPRS are in fact higher than 95B but less than 1x-but in initial commercial implementations we expect 95B to outperform GPRS. KT Freetel and Hansol in Korea, commercially launched 95B in 1999 while DDI and IDO of Japan launched commercial service in 2000. Several, but not all, of the GPRS network infrastructure vendors are planning to support the maximum eight channels in their technical implementations. GPRS has a disadvantage in that the initial GPRS capable mobile terminals are expected to support only a maximum of four simultaneous channels. GPRS and voice both use the same traffic channels, meaning that that both voice and data are competing for the same resource. Network operators, wherever they are in the world, are reluctant to dedicate channels or assign priority to data over voice. Because of real world limitations the typical bandwidth available to a GPRS user is expected to be less than 30 kbps, similar to the wire-line data transfer rates in 1999 and below today's 95B. EDGE has a maximum theoretical data rate of 384 kbps, but EDGE works in a similar way to GPRS in that this would require all 8 timeslots-
Which is unlikely-- to be available to a single user. As such, the theoretical maximum is once again an irrelevant figure to an end user. We expect uses to get 114 kbps data rates. Implemented bandwidth to the application layer and therefore offers a typical user rate of 130 kbps, five times the typical data available to a GPRs user.

4.DISCLAIMER 3. SUMMARY
From this analysis, we can see that the packet data design that is standardized in the network and handsets of the CDMA One standards technology facilitates easier and therefore less expensive packet data implementation than GPRS from a network operator, handset, application developer and corporation's point of view. All CDMA One handsets are packet data capable and work on all implementations of CDMA One networks. Phones do however remain a significant barrier to the widespread uptake of higher speed data services on both GSM and CDMA networks.
Any network operator who is facing the decision of which network to buy should consider the upgrade paths of each network. GSM networks were not designed for packet data-- a GPRS upgrade adds this capability but at a higher cost than CDMA One. Also, the GPRS network is not based on standard IP network elements, which will result in a more complicated integration than the CDMA One packet data solution that was designed with standard IP in the handsets and with standard IP elements in the network. These standard elements will follow the cost curves of the Internet network elements. Additionally, GPRS and EDGE dedicate network resources to data taking capacity away from the GSM voice network which could cause network congestion. CDMA is a voice and data solution where voice and data share the same resources. 1x also increases data speeds to 144 kbps and doubles the voice capacity of current CDMA One systems
By incorporating standard IP protocols and network IP routing, CDMA One sensibly maximizes the leverage it gains from the considerable economies of scale conferred by the Internet. This will allow CDMA One carriers to offer the equivalent Internet services as GPRS and EDGE operators with a lower overall investment in equipment and human resources and without decreasing voice capacity. Network operators will more readily find the skills to integrate equipment and develop services because the same IP elements are used on the landline Internet. Mobile Lifestreams is a research and consulting company specializing in non-voice services. Mobile Lifestreams Ltd uses its best efforts in the collection and preparation of the information included in the enclosed report. It does not assume, and hereby disclaims, any liability for any loss or damage caused by errors or omissions, whether such errors or omissions resulted from negligence, accident or other causes. Mobile Lifestreams Ltd and its associates do not have stock positions or options in any of the companies discussed herein. Mobile Lifestreams was paid to conduct this research. Mobile Lifestreams is the author and publisher of "Data on GPRS" and "Data on 3G", independent industry research documents.

REFRENCES:-

[1] Code of Federal Regulations, Telecommunications. Part 22 Public Mobile Service, ss 22.911,
1995.
[2] Carey, R. B., “Technical Factors Affecting the Assignment of Facilities in the Domestic
Public Land Mobile Radio Service,” FCC Report No. R-6406, June 1964.
[3] Lee, W. C. Y., “Comments of PacTel Cellular in the Matter of Amendment of Part 22,”
FCC Docket No. 90-6, Dec. 1991.
[4] Lee, W. C. Y., Mobile Cellular Telecommunications: Analog and Digital Systems, New York,
NY: McGraw Hill, 1995.
[5] Propagation Ad Hoc Committee, “Lee’s Model,” IEEE Trans. on Vehicular Technology,
Feb. 1988, Special Issue.
[6] “FCC Second Report and Order, In the Matter of Amendment of Part 22 of the
Commission’s Rules to Provide for Filing and Processing of Applications for Unserved Areas in the Cellular Service and to Modify other Cellular Rules,” FCC 92-94:38357, April 1992.
[7] Yang, S. C., A. Watson, and J. Yang, “CGSA Determination in a CDMA Cellular
System,” Proc. 9th Annual International Conf. on Wireless Communications, Calgary,
Alberta, Canada, July 9-11, 1997, pp. 452–464.
[8] Cleveland, R. F., D. M. Sylvar, and J. L. Ulcek, “Evaluating Compliance with FCCSpecified
Guidelines for Human Exposure to Radio Frequency Radiation,” FCC Office of
Engineering and Technology Bulletin No. 65, 1996.
[9] “FCC Report and Order on Guidelines for Evaluating the Environmental Effects of Radio
Frequency Radiation,” FCC ET Docket No. 93-62, Aug. 1996.
[10] Gailey, P. C., and R. A. Tell, “An Engineering Assessment of the Potential Impact of
Federal Radiation Protection Guidance on the AM, FM, and TV Broadcast Services,”
U.S. Environmental Protection Agency Report No. EPA 520/6-85-011, April 1985.

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...Electronic Commerce Research and Applications 3 (2004) 389–404 www.elsevier.com/locate/ecra Analysis of E-commerce innovation and impact: a hypercube model Jen-Her Wu a a,b,* , Tzyh-Lih Hisa a,c Department of Information Management, National Sun Yat-Sen University, 70 Lien-Hai Road, Kaohsiung 80424, Taiwan b Institute of Health Care Management, National Sun Yat-Sen University, Kaohsiung, Taiwan c Department of Information Management, Chinese Navel Academy, Kaohsiung, Taiwan Received 17 February 2004; received in revised form 19 April 2004; accepted 19 May 2004 Available online 2 July 2004 Abstract Electronic commerce (E-commerce) innovating applications have posed novel, technical, organizational and commercial challenges. This study uses a hypercube model to investigate these innovative changes and focuses on their impacts on E-commerce stakeholders: providers, E-commerce companies, customers, and complementors. The results indicate that mobile commerce (M-commerce) differs substantially from Web-based commerce in some technological components, yet both share common business model. However, from Web-based to M-commerce, innovation is architectural for customers and E-commerce companies, but a radical change for complementors. From M-commerce to Ucommerce, innovation is modular to customers, architectural to complementors and radical to E-commerce companies and providers. Thereafter, the critical impacts of E-commerce innovations on the stakeholders are identified...

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...Australia • Brazil • Japan • Korea • Mexico • Singapore • Spain • United Kingdom • United States SEVENTH EDITION Data Communications and Computer Networks A Business User’s Approach Curt M. White DePaul University Australia • Brazil • Japan • Korea • Mexico • Singapore • Spain • United Kingdom • United States Data Communications and Computer Networks: A Business User’s Approach, Seventh Edition Curt M. White Editor-In-Chief: Joe Sabatino Senior Acquisitions Editor: Charles McCormick, Jr. Senior Product Manager: Kate Mason Editorial Assistant: Courtney Bavaro Marketing Director: Keri Witman Marketing Manager: Adam Marsh Senior Marketing Communications Manager: Libby Shipp Marketing Coordinator: Suellen Ruttkay Media Editor: Chris Valentine Art and Cover Direction, Production Management, and Composition: PreMediaGlobal Cover Credit: © Masterfile Royalty Free Manufacturing Coordinator: Julio Esperas © 2013 Course Technology, Cengage Learning ALL RIGHTS RESERVED. No part of this work covered by the copyright herein may be reproduced, transmitted, stored or used in any form or by any means—graphic, electronic, or mechanical, including but not limited to photocopying, recording, scanning, digitizing, taping, Web distribution, information networks, or information storage and retrieval systems, except as permitted under Section 107 or 108 of the 1976 United States Copyright Act—without the prior written permission of the publisher. For product information and technology assistance...

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...Special Publication 800-48 Wireless Network Security Tom Karygiannis Les Owens 802.11, Bluetooth and Handheld Devices NIST Special Publication 800-48 Wireless Network Security 802.11, Bluetooth and Handheld Devices Recommendations of the National Institute of Standards and Technology Tom Karygiannis and Les Owens C O M P U T E R S E C U R I T Y Computer Security Division Information Technology Laboratory National Institute of Standards and Technology Gaithersburg, MD 20899-8930 November 2002 U.S. Department of Commerce Donald L. Evans, Secretary Technology Administration Phillip J. Bond, Under Secretary for Technology National Institute of Standards and Technology Arden L. Bement, Jr., Director W IRELESS NETWORK SECURITY Note to Readers This document is a publication of the National Institute of Standards and Technology (NIST) and is not subject to U.S. copyright. Certain commercial products are described in this document as examples only. Inclusion or exclusion of any product does not imply endorsement or non-endorsement by NIST or any agency of the U.S. Government. Inclusion of a product name does not imply that the product is the best or only product suitable for the specified purpose. Acknowledgments The authors wish to express their sincere thanks to numerous members of government, industry, and academia who have commented on this document. First, the authors wish to express their thanks to the staff at Booz Allen Hamilton...

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