Cha2,
Re: (QCOM) (ERICY) Ericsson on cdma2000 Standsardization efforts.
Important!
More & better detail here than I've found on the CDG web site. Still some missing pieces to the puzzle. Ericsson text only is clipped here but there are good diagrams on the site worth referencing.
Note that current 1xMC IS-2000 (TIA) standard is phase 0 (MSM5000 chipset). Supposedly there will be a Revision A (MSM5100 chipset for 1xMC). This text says IS 2000-A (MSM5100 chipset for 1xMC) "will be completed in early 2000". I hope thats before I close the pool for the season. <g>
It says that IS 2000-A will be a 3x specification. Perhaps the upgraded 1x specification will be included with the 3x specification? This makes sense to me.
No specific mention here of HDR or this new beast called as 1xEV (1X evolution), but that concept was evidently just recently evolved so maybe thats why IS 2000-A is pushed back.
[ Meantime "the iMSM5500(TM) chipset, will combine 3G 1x technology with HDR. Samples of both the iMSM5500 and CSM5500 chipsets and system software are scheduled for mid-2001 with production quantities scheduled for the second half of 2001.". - per QCOM 5/12/00 release ]
Also, some IS-2000-A language confuses me. It says "there are currently two implementations of 3X identified in the standard. the Multi-Carrier mode utilizes three 1.25 MHz carriers to deliver 3G services, while the Direct Sequence mode utilizes one 3.75 MHz carrier to deliver the same services. The mode implemented would largely depend on the operator's existing spectrum allocations and usage." >>
This infers to me that there will be a DS mode of the 3X standard as well as an MC mode. Perhaps it means it emulates DS mode. How do you read this?
Note MSM5500 is 1x not 3x.
From the Ericsson site
>> cdma2000™ STANDARDIZATION from Ericsson
ericsson.com
cdma2000 is the 3rd Generation solution based on IS-95. It is an evolution of an existing wireless standard. cdma2000 supports 3G services as defined by the International Telecommunications Union (ITU) for IMT-2000. 3G networks will deliver wireless services with better performance, greater cost-effectiveness and significantly more content. The goal is access to any service, anywhere, anytime from one terminal - true converged, mobile services.
cdma2000 is one solution for wireless operators who want to take advantage of the new market dynamics created by mobility and the Internet. cdma2000 is both an air interface and a core network solution for delivering the services that customers are demanding today. These services are sometimes referred to as 3G. cdma2000 and 3G are synonymous.
cdma2000 is one mode of the Radio Access "Family" of Air interfaces agreed upon by the Operators Harmonization Group for promoting and facilitating convergence of third generation (3G) networks. One goal of the harmonization effort is to provide seamless global roaming between the different modes of CDMA 3G -- cdma2000 and WCDMA. Ericsson's use of common core technologies allows us to easily support the whole family of 3G CDMA modes.
The CDMA Systems Ericsson Business Unit in San Diego is the champion unit from Ericsson for the development of cdma2000-capable 3G infrastructure products.
cdma2000 is designed to mitigate risks, protect investments and deliver significant performance boosts to operators as they evolve their networks to offer 3G services. cdma2000 networks are backward compatible to cdmaOne deployments, protecting operator investments in cdmaOne networks and providing simple and cost-effective migration paths to the next generation. In addition, cdma2000 networks offer voice quality and voice capacity imporvements, and support for high speed and multimedia data services.
TECHNICAL INFORMATION
The cdma2000 standard is divided into two phases commonly known as 1X and 3X. Phase one provides support for the cdma2000 1X air interface - providing average data rates of 144 kbps. Phase two incorporates additional support for 3X systems - providing for data rates upto 2Mbps.
Phase 1 cdma2000 1X
The IS-2000 standard (cdma2000 1X) has been completed and published by the Telecommunications Industry Association (TIA). 1X offers approximately twice the voice capacity of cdmaOne, average data rates of 144 kbps, backward compatibility with cdmaOne networks, and other performance improvements.
1X refers to cdma2000 implementation within existing spectrum allocations for cdmaOne - 1.25 MHz carriers. The technical term is derived from N =1 (i.e. use of same 1.25 MHz carrier as in cdmaOne) and the 1x means one times 1.25 MHz (RTT refers to Radio Transmission Technology).
1X can be implemented in existing spectrum or in new spectrum allocations.
A cdma2000 - 1X network will also introduce simultaneous voice and data services, low latency data support and other performance improvements. The backward compatibility with cdmaOne provided by Ericsson's cdma2000 solution, further ensures investment protection.
Phase 2 cdma2000 - 3X
The IS-2000-A standard (cdma2000-3X) will be completed in early 2000. 3X offers even higher capacity than 1X, data rates of up to 2 Mbps, backward compatibility with both 1X and cdmaOne deployments, and other performance enhancements.
3X can also be implemented in existing or new spectrum allocations, but it utilizes a broader band of spectrum. The term 3X refers to N = 3 (i.e. use of three 1.25 MHz carriers). There are currently two implementations of 3X identified in the standard. the Multi-Carrier mode utilizes three 1.25 MHz carriers to deliver 3G services, while the Direct Sequence mode utilizes one 3.75 MHz carrier to deliver the same services. The mode implemented would largely depend on the operator's existing spectrum allocations and usage.
With cdma2000 3X operators will be able to offer even higher average and peak data rates from their networks - upto 2Mbps. Quality of service for delivering multimedia applications will also be improved. cdma2000 3X offers simultaneous support and roaming for cdmaOne, 1X and 3X users and improves the voice capacity even more - adding value and lowering cost for wireless operators.
cdma2000 Packet Core Network
The standards for a CDMA packet core network are being developed by the TR45.6 working group of the TIA. These standards are being developed by using existing standards from the IEFT (Internet Engineering Task Force) on Mobile IP.
To provide secure and efficient transport for wireless data, Ericsson has introduced a data delivery mechanism using PCN (Packet Core Network). The PCN network is comprised of the PDSN (Packet Data Serving Node) and AAA (Authentication, Authorization and Accounting). The HA (Home Agent) can be added to provide Mobile IP based packet data services.
cdmaOne EVOLUTION OPTIONS
Ericsson provides customers with the freedom to choose how and when to evolve to a 3G network solution. Ericsson's cdmaOne and cdma2000 products are designed to protect current and future network investment. With Ericsson's cdma2000 air interface and core solution, operators can double the voice capacity of existing cdmaOne systems and introduce 3G features and services without significant capital investment in infrastructure and spectrum.
Migrate from cdmaOne
-Cost Effective Upgrade to cdma2000 1X
· Main unit and S/W upgrade only
· No modiffication to remote units or antennas
· Upgrade only portions of network that demand capacity or higher data rates
-Compact Multi-Carrier path to cdma 3X
· Main unit and S/W upgrade
· Modifications to Rx path in remote areas
cdma2000 - 1X Multi-Carrier
-Cost Effective Upgrade to 3X
· Channel Element and S/W load
· No to remote units or wiring
Ericsson's networks are scalable and flexible for meeting expansion needs. As illustrated, most infrastructure can be evolved from cdmaOne to cdma2000 1X and then cdma2000 3X or DS-41with minimal hardware and software upgrades. By deploying Ericsson's cdma2000 solution, network operators are able to minimize the total cost of migration.
Migrate to 3X with Channel Card and software upgrade only
-Operate 1X and 3X on the same base station
- Remote units designed with wideband receive chain for 3X reverse link
- No changes required to antenna configuration
- Optional support for transmit diversity
BENEFITS:
Backward-compatibility with cdmaOne deployments
* Protects operator investment in existing cdmaOne networks
* Provides simple and cost-effective migration to 3G services
Voice Improvement
* Voice Quality Improvement
* Voice Capacity Improvement (1X offers one and a half to 2 times the capacity of cdmaOne; 3X offers even greater capacity increases)
High Speed Data Services Support
* Higher Data Rates (144 kbps to 2 Mbps)
* Low Latency Data Support
Multimedia Services Support
* Simultaneous Voice/Data Support for multi-service
* Quality of Service (QoS) Support for multimedia applications
Special Applications
*Hot Spot Coverage (Spot Beams) and Follow-Me Service (Smart Antennas)
* Access Reliability and Extended Battery Life
SUBSCRIBER TERMINALS
Ericsson is committed to become a major supplier of CDMA terminals with the first cdmaOne handset targeted to be commercially available by end 2000. The cdmaOne handset will take the Ericsson recognized form factor offering:
- Dual mode: 800 MHz CDMA / 800 MHz AMPS
- QUALCOMM market proven chipset and software
- Interoperable with third-party handset manufacturers
The cdma2000 subscriber terminal product will offer:
- Tri-mode: 800/1900 CDMA and 800 Analog
- Improved capacity and coverage, navigation and info presentation
- Packet Data Capability of 144 kbps
- Simultaneous voice and data support
- Bluetooth / WAP Enabled
- Backwards compatibility with cdmaOne
- Longer standby times <<
- Eric - |
