ronho:
The stuff I cited came from the second part of that article.
For anyone who feels like dredging through it:
WE ALSO SHOULD OTHERWISE DEVELOP CDMA (2)
"Chinese computer newspaper " in Li 2001-03-05 09:46:15
The third generation mobile communication technology proposes the background is, Europe
specially is Japan hopes gets out of high passes the company the patent restraint, re- divides
the world mobile communication market share.
Looking from the equipment classification, the mobile communication system product
includes the terminal device and the network equipment. The network equipment market
space basically is by the rate of increment decision, but the terminal device market space
decides by two factors: One is every year moves the user the growth number, two was
every year has had the user the renewal rate. In these users, the main service is the voice.
But from provides the voice service the angle looks, the second generation does not have
the user with the third generation to be allowed the sensation difference, therefore will be
unnecessary for 80000000 later voice user introduction third generation systems. If mainly
provides the voice service with the third generation system for the user, what policy then
the fees question is. If provides with the second generation of system similar service and
the charge with the third generation, inevitably will increase the operation department the
operation cost, causes difficulty which will continue to develop. If the similar service
different charge, inevitably will create the competition the inferiority, specially in under
operation market foreign opening condition.
Liked standing the letter recently from high passes purchases the IS-95 standard handset
technology and high passes 基站 the system enterprise department. This indicates, although
likes standing the letter vigorously publicizes the third generation, but it also hope holds the
share in the second generation of market, also the goal market cannot be Europe. What
reason but does China also have must use the third generation to provide the basic voice
service which the second generation originally should provide?
If our country main migration service is the voice class, then 80000000 users are the
80MHz frequencies, equally is 1000000 users /1mHz, if puts out 1/4 frequency develops
CDMA, then 20MHz CDMA will hold approximately 80000000 users, other 60MHz
frequency will hold 60000000 users, the grand total is 140000000 users. If develops in GSM
to 40000000 o'clock other frequencies uses in CDMA, then the similar frequency will hold
200000000 users (in 2010 goal). But regarding has the initial period data service demand the
minority user says, the low speed channel is may be competent, because the data service
bottleneck is not completely decides by the airborne connection.
In domestic, although third generation's discussion is very hot, but the very many enterprises
all hope solidly studies IS-95 the realization question. The reason is very simple, one will be
IS-95 is the future any CDMA system important foundation, two will be third generation's
standard does not have completely to finalize. At present domestic several have the
strength the enterprise is being engaged in IS-95 the research development work, and has
promoted the complete set, may the commercial system equipment.
Ahead of time solves third generation's intellectual property rights
Talks about the third generation mobile communication the intellectual property rights,
completely some sufficient reasons think, the overwhelming majority related CDMA aspect
intellectual property rights in fact is the second generation of CDMA system intellectual
property rights.
Through the research analysis, in the second generation of CDMA system power control
and the soft cut was in past any communications system no brand-new technology, but the
third generation CDMA system suggested actually did not have any to have such
characteristic the new technology. Said from this significance, solves the second generation
of CDMA intellectual property rights problem in fact also solves the third generation
CDMA main intellectual property rights problem.
Korea is one very good illustration. Specially is worth paying attention, in the CDMA
question, we excessively emphasized the intellectual property rights question. Looking from
the near for 20 year our country telecommunication equipment domestic product course, all
is first uses the overseas chip in own system, then develops oneself the chip. The
switchboard is this, SDH is this, GSM is this, can't CDMA why only like this? Real only has
the CDMA chip has the intellectual property rights question?
In the CDMA aspect, USA and Korea already gradually from IS-9C5A, walked IS-9C5b,
and the IS-2000 standard vote version already formulated completes, this in fact was the
cdma2000 suggestion implementation edition. In other words, others already with steady
steps walked in the standard the third generation, and looked from the IS-95 foundation, the
standard and the product only had 1 ~ 2 years disparity, in other words, IS-2000 (namely
third generation) will become the commercial system in 2000 year's end or at the beginning
of 2001. How but do we actually continuously also one step jump in the in-situ tentative plan
from the second generation the intellectual property rights which avoids to the third
generation high passes. Obviously, such strategy is not right.
Up to now, China the basic strategy which adopts in the mobile communication aspect is
tightly does not pursue the shed way, others studies second generation of time us studies the
second generation, when starts fries does the third generation, we again blindly thinks
stands identically in with others starts running on-line, is not steps up the second generation
of research development, instead discusses whether discards the second generation hurries
to organize the third generation the research development. This is not appropriate. This
looks like us all may stand with the king armed force rosy cloud in identical starts running
on-line, but is not possible and she simultaneously arrives the end point is one truth.
David T. |
