Posts Tagged ‘CDMA’

China is the technology: Smooth gradual progress from CDMA to LTE

Move the sharp increase of the flow demand of the data, the development in wireless broadband technology such as HSPA, WiMAX, bring CDMA a operator big pressure, has accelerated CDMA to performing progress and cutting down of LTE. Then, how is CDMA to LTE smooth gradual progress?

LTE is a gradual progress direction of the future

Move the intersection of data and business, develop rapidly while being contemporary, operator have, face, move the intersection of data and business, increase sharply the intersection of data and the intersection of flow and the intersection of demand and increase severely, the intersection of cost and the intersection of person who compress and challenge that bring. In order to deal with and challenge, and further make profits in moving business of data, the operator prepare the upgrading gradual progress of the existing mobile network actively.

CDMA industry has wandered up and down between LTE and UMB for a time to the gradual progress tactics of the future, in the development process of two kinds of technology, major CDMA operators such as U.S.A. Verizon, Japan KDDI, South Korean SK telecom and South Korean telecommunication KTF,etc. claim to turn to LTE camp one after another, make the industry chain of LTE destine to be riper and completer than UMB in the future. Qualcomm claim to give up UMB in November of 2008. So far, the signpost from CDMA to LTE gradual progress is totally clear. Meanwhile, wireless broadband technology such as HSPA, WiMAX were brought CDMA pressure of a operator, accelerated CDMA to performing progress and cutting down of LTE.

High throughput, prolong when being low and low cost, it is three basic demand that the network developed in the future, the goal of LTE is to cater to these three requirements – -LTE adopts a series of most advanced technology such as OFDMA/SC-OFDMA/MIMO, to realize the throughput of the high data, its goal of the throughput of doing from head to foot, respectively for not lower than 100Mbps and 50Mbpsing; To do away with a hierarchical system the intersection of network and framework LTE, problem of prolonging solve well, business its prolong less than 5ms when the layer, control layer to be smaller than 100ms; And the whole IP framework, flexible frequency spectrum utilize the tactics, SON technology etc. for LTE very large cost advantage.

At present, CDMA such as Japan KDDI, U.S.A. Verizon run the introduction that is being set about preparing LTE in the commercial city.

CDMA grows coexisting with LTE

Though the business of the data is developed rapidly, the speech business still will be the important source that CDMA operator make profits in the future, CDMA network will still be developed continuously within some time. And technology such as HSPA/WiMAX bring CDMA competition pressure of a operator, and the data business is increased sharply and brought the pressure of the network now, have accelerated CDMA operator’s progressing and cutting down to the performing of LTE network. So, the stage when grow that CDMA and LTE certainly will coexist on lifespan. KDDI has been clear recently to superpose LTE network, the development tactics which the two serve together on the basis of existing CDMA network. And Verizon shows clearly CDMA network that finishes being upgraded in 2007 will be run continuously while proposing LTE gradual progress tactics.

From a different perspective, LTE phased tactics that introduces, require CDMA and its coexistence too. The stage of LTE is introduced, means LTE covers the hot area at first at initial stage, offer the high-capacity movement broadband inserting service, cover completely progressively. Cover stage in the focus, LTE offers movement broadband of the regional high speed of the focus service, the intersection of CDMA and the intersection of network and low the intersection of speed and sewing and moving broadband to serve wide to cover with can offer, such stereoscopic service network that melted, let the operator make one’s own operation tactics in a flexible way, offer diversified services. The operation brand that CDMA and WiMAX that SprintNextel puts forward coexist and grow at present, it is this kind of CDMA OFDMA LTE/WiMAX Model of stereoscopic network of melting. Sprint introduces CDMA/WiMAX bimodulus terminal station, devoted to the intercommunication switch of CDMA and WiMAX network, give play to the stereoscopic network covering and comprehensive advantage of the capacity maximizing.

The operator faces two major challenges

At CDMA it and not coexist at LTE and in LTE gradual progress when,last two challenge operator: First, while developing the existing CDMA network, how to guarantee existingly to make an investment in and is protected in the gradual progress of LTE; Second, how about guarantee user in the gradual progress experience, prevent users from retreat network.

To the first challenge, there should be one CDMA and LTE solution of the platform altogether, in order to guarantee the smooth gradual progress from CDMA to LTE, fully protecting has investment. CDMA and LTE the intersection of hardware and platform to the intersection of LTE and smooth to escalate and precondition of the gradual progress CDMA altogether. LTE and CDMA belong to two kinds of totally different wireless technology, the solution of the hardware platform has put forward very high technical requirement for the apparatus supplier to offer different wireless technology altogether. Nowadays the development that the industry appeared to having the wireless product if GSM/UMTS/CDMA/WiMAX takes the development policy which is unified the platform, if apparatus provider have technology already the platform accumulates sure experience technically together, and can apply to the solution from CDMA to LTE gradual progress, it is upgraded that will be smooth to CDMA-LTE and the gradual progress solution one will be put forward and playing a great role. Except the maturity of the platform, on the basis of CDMA and LTE of this platform, it is especially not only performance of LTE but also a question that can’t be ignored. Apparatus provider must in the intersection of research and positive input under process of LTE, make one’s own LTE research and develop the process and walk in the industry forefront, could guarantee the performance based on LTE solution of the platform altogether, thus guarantee the smooth upgrading gradual progress from CDMA to LTE. In addition, the provider’s end will make the sharing to the network equipment of the solution reach and maximize to end ability, strengthen CDMA to the smoothness of LTE gradual progress, protect the investment of the operator.
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TCL marches into the market of Chinese CDMA cell-phone on a large scale again

In a situation that CDMA market scale expanded sharply, the insider reveals, China produces the big man of the mobile phone and already begins to fix too, make CDMA cell-phone big on the Chinese market again.

TCL communication original document is a Chinese CDMA cell-phone senior statesman, CDMA in 2001 is shortly after China got on horse, TCL communication began to march into the CDMA cell-phone, in 2002, TCL communication began to introduce the first of China and support BREW platform CDMA1X cell-phone, this has been already 10 years from now. In 2003, TCL communication has had ultra low price CDMA cell-phone TCL1898 of 200 multivariate only to introduce a price, on Shenzhen CDMA cell-phone market, according to statistics, the market share of this mobile phone is close to 15% for a time. Later for various reasons, TCL was nearly market of Chinese CDMA cell-phone of the backout.

It is reported, in recent years, CDMA business of TCL communication abroad is developed well, has already entered into cooperation with CDMA business operator of 12 countries in the world at present, offer nearly 30 balance payment CDMA customized productses for the whole world every year. Recently, the EVDO cell-phone E2 of TCL has become the first 3G mobile products that the Chinese Chinese mobile phone brand has been listed on Indonesia, going on the market reaches the sales volume of 400,000. In Brazil, the sales volume of TCLOT-208P form fund products reaches 1 million even more.

Having already established the foundation of CDMA business on the overseas market, now, TCL communication, through marching into the chance of the Chinese market on a large scale too, besides developing WCDMA rule that TCL communication is good at, will develop CDMA rule mobile phone in a more cost-effective manner too, therefore, the move about the market of CDMA cell-phone of TCL communication has already been confirmed. And preparing for some time, TCL march on a large scale again CDMA cell-phone clinch a deal nail already at present.

By the end of April of 2012, the total number of China Telecom CDMA users is close to 139 million, among them 3G users increase to 45,560,000, TCL insider reveals, the reason why TCL decided to greatly just make CDMA cell-phone again because the development of this market has been already enough large.

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Ericsson upgrades dilatation for China Telecom CDMA network

The news on February 28, Ericsson NASDAQ: ERIC Will upgrade and divide into groups the business datum node PDSN for China Telecom ,And divide into groups in the key net to carry on dilatation for its CDMA, and offer the two – year long relevant service. This project will contribute to improving the end user to experience, will help China Telecom to expand the source of revenue of the business, tamp the foundation to the smooth gradual progress of LTE network for the future. This is that Ericsson provides the key network solution of dividing into groups of intact CDMA for China Telecom for the first time.

In addition, it is the customized intellectual pipeline solution of CDMA network that Ericsson will also take the lead in disposing global first set in Zhejiang and Anhui specially.

Ericsson’s solution will play an important role in China Telecom CDMA key network development plan of dividing into groups, through disposing this solution, China Telecom can optimize its existing network resource utilization efficiency, distinguish different users effectively, thus expand the source of revenue of the business.

China of Ericsson and Northeast Asian district president Ma ZhiHong MatsHOlsson Say: “Ericsson is very glad to be with the biggest CDMA network operator in the world – -China Telecom launches cooperation in this breakthrough project. Through using abundant experience and leading technology in the field of mobile network of Ericsson, we create better movement broadband of hundreds of millions of CDMA users of lasting helping hand China Telecom to experience. ”

Ericsson high-performance CDMA carries to the end solution, it will be China Telecom to his 129,250,000 users, include 38,700,003G users ‘ The source of the data, up to January of 2012 ,Offer the strong weapon of the high cost efficiency all-round service.

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The global CDMA user’s total number exceeds 600 million Asia is the main contribution area

CDMA develops the group CDG Announced a few days ago, the global CDMA user’s total number was about 615 million, included 1 million and had not upgraded to yet 3G The second generation of 2G CdmaOne users.

93% increase users newly ‘ About 36,300,000 It is new EV-DO users, reflect consumers to the powerful demand for moving the broadband service. The statistics show, the total number of EV-DO users of the first half of 2011 exceeds 185,900,000 compound average annual growth rate is 24% .

Until June of 2011, by will it be June 2011 year, quantity, user of cdma2000, exceed 614 million, increase 39 million it compounds average annual growth rate to be 12% newly than will it be the beginning of 2011 year .

Asia increases the area that makes main contribution to user’s total amount, secondly it is the North America, Europe and Middle East. At present, there are 336 commercial cdma2000 operators in all in the whole world, they are distributed in 123 countries and regions.

CDMA develops Lafarge of Perry of executive directors of the group Perry LaForge Say: “Consumers are having prominent influence on use of cdma2000 to intellectual mobile phone, dull and stereotyped computer, router and demand for the terminal device of the machine of machine, especially with great influence on sale of EV-DO apparatus.

Market Advance fast, after not waiting for 4G to totally cover. Their flow of data of EV-DO net support that LTE operator which uses cdma2000 network relies on them to a great extent, so has laid a solid foundation for its EV-DO. Have already touched the most remote area because of a lot of 3G infrastructure that can offer high-quality pronunciation and broadband data service, so in a situation that LTE coverage expands progressively, it will continue becoming the movement service backbones of next ten years. ”

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The resurgence communication introduces the global first CDMA subminiature base station

At the present stage, it is the focal point that China Telecom pays close attention to to improve and improve the indoor network and cover. The resurgence communication introduces first CDMA subminiature base station Gecko in the world, has offered the preferred scheme of innovation for covering in the room with.

China Telecom CDMA network has had comparatively complete network size and service quality at present, have basically solved the cover problem of places such as outdoor, important traffic, star hotels, the office building, the important commercial floor, large-scale store and supermarket of government above city level,etc.. But to the environment which newly-increased commercial building, office building, campus, medium and small-scale store and supermarket, place of entertainment of food and beverage of government at county level,etc. closely related to masses’ life, the service quality of the network influences the brand image of China Telecom directly, improve and improve the network under this kind of environment to cover with, become the focal point that China Telecom pays close attention to. The resurgence communication introduces first CDMA subminiature base station Gecko in the world, has offered the preferred scheme of innovation for covering in the room with.

Low cost, dispose quickly

What nuclear CPU treatment technology, highly integrated baseband and radio frequency Gecko adopts to deal with the module!, small, light, install simply and swiftly, group’s network is flexible and convenient, support many kinds of clock synchronization schemes, it is more convenient to construct, support CDMA20001x, EV-DORev.A, EV-DORev.B and GoTa cluster technology.

Gecko has network way of two kinds of groups: ” common network ” With ” special network ” . Such as adopting ” common network ” way, need to insert the safe gateway, finish the communication with BSC through IPSec agreement; ” special network ” way can be transmitted through relaying, insert BSC and CDMA key network with the network BTS now together, can control and maintain Gecko and network BTS now in unison through the key network OMC backstage supporter, thus realize that manages together.

Design on the basis of ” low-cost, quick arrangement ” function

For realize design idea of ” the low cost, dispose quickly “, Gecko combine and pay designing from physical attribute meticulously to the function. First of all, the volume is small and exquisite, the size of 260mmx180mmx58mm is only as big as brief case, easy to carry. Support to hang the wall, embrace the pole, hang the installation way carried, facilitate installation, does not destroy the internal environment of the room. Secondly, it is it many kinds of to support by IP group network way, adopt IPAbis not to be transmitted Gecko,is it can flexible to utilize by various transmission resource for instance: Local cycle of land net of the city, SDH, xDSL, digital microwave, satellite,etc. Realize and insert. In addition, Gecko has abundant clock solutions, support GPS, RGPS and 1588 clocks of systems, save corollary equipment such as GPS aerial.

Incorporate the whole network and block one side alone

Gecko plans the respect in unison and disposes in the network, has Femtocell incomparable advantages. Gecko can stand unified planning with outdoor Acer, manage and maintain in unison by backstage supporter, can realize the long-range maintenance of Gecko even through backstage supporter, heal by oneself from the disposition. Gecko and outdoor Acer stand and can be realized smoothly softly and switched over between Gecko, makes whole network performance promote by a wide margin.

Although Gecko volume is small, the capability is out of the ordinary, the single signal carrier can support 31 CDMA20001x pronunciations and 64 EV-DO data users, can cover the area of the radius 300m to the greatest extent in cases packed with the power only and covered, offer CDMA20001x, EV-DORev.A and even EV-DORev.B business, and support the characteristic GoTa cluster business of China Telecom – -The wing talkbacks on day.

Employ the localization according to the characteristic

Gecko “low cost, dispose, merge all quickly” characteristic can last operator fast to last traffics blind hot to absorb as low cost lasting demanding.

It is blind to mend fast: Cover with storing in the blind area in the weak district, the building DAS system distributed aerial system in the room Transformation have property or difficult construction, it increases nearby aerials to be power result bad, under the urgent situation of time of networking, using Gecko can realize that it is blind to mend fast.
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China, in order to show the global first CDMA solution that merges with WiFi

Global and leading information and communication solution supplier China are, join CDMA summit of 2011 years of Hong Kong of high pass with the global first CDMASmallCell solution that merges with WiFi.

With moving broadband era, the flow of user Shan’s data is increasing constantly. The wireless network of future networks and expands to the thing, data business employed greatly and abundantly, this brings enormous flow to mobile network to assault. In order to meet the operator to wireless network high flow density and demand covered deeply, China, in order to put out CDMASmallCell solution. This solution realizes the integration with WiFi, support WiFi access technology, have advantage disposed fast, can promote users to experience, and the network that reduces the operator disposes the cost.

China for CDMASmallCell solution can used in office building, store, hotel,etc. blind spots of place indoor cover with, support to embrace the pole, hang the wall and hang a of installation, do not need and can be disposed fast in the computer lab. Not only the cost of location can stand sparingly in the operator, but also save the network to dispose the cost of manpower, have shortened and disposed time. This solution is still suitable for GPS global position system such as the basement, lift, office, mine Cover the difficult scene.

China supports to use simultaneously for CDMASmallCell solution, and many kinds of access ways, including DSL digital subscriber line ,LAN LAN ,PON have no mere network of source ,Satellite,etc.. In addition, only need a operation and safeguard the group, a set of network management system, can realize to the great management that stands and stands a little, have transported and linked the cost sparingly.

“Move development of communication, has promoted pronunciation era to the era of the data, get and move the changes of times of broadband, has promoted China as the constant innovation on the solution of wireless access network too. ” China is CDMA ... Read more

Brazil moves the operator Vivo and claims to postpone closing CDMA network

The Brazilian mobile network Vivo was announced a few days ago, the company planned to postpone closing the time of its CDMA network, until the end of June of 2012. This company has announced in March of this year, has planned to close down this network in September.

This company says, because there are 2,300,000 users at present in this network, the company plans to postpone closing down time, so as not to influence users’ use.

Vivo Company claimed to give up CDMA in June of 2006 at first, chose GSM. This company said at that time, would build a GSM network in the existing network infrastructure. The coverage of CDMA centres in the south of this country, some areas of St. Paul and the Midwest, mainly offered by Motorola Company. The others of Brazil are really dismembered by Nortel Networks and Alcatel – Lucent Company.

It is reported to remedy, have the intersection of GSM and blank district that network cover existence of network this at present, CDMA service of these areas is users’ only choice.

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News claims telecommunications will be led into two CDMA editions iPhone in October

The news on August 2, according to well-informed person, China Telecom has already reached the preliminary agreement with the apple, CDMA edition iPhone be led into China in about the last ten days of October most quickly. It is introduced, telecommunications or introducing CDMA edition iPhone4 and iPhone5 at the same time, in order to form similar CHINAUNICOM and iPhone3GS and iPhone4 to match the form.

Users exceed 10 million in the network in China iPhone

The Chinese market seems increasingly important for apple, according to China Mobile, its iPhone user in the network has already topped 6 million, such as combining with CHINAUNICOM network users, Chinese iPhone user’s scale has been already above 10 million. In the third wealth wealth newspaper in season that the apple was just released of July of this year, the camp of Greater China district charged 3,800 million dollars of Damien, increase by 6 times compared with the same period of last year. Apple chief operating officer Tim. Cook claims, Chinese market iPhone sales volume had already increased by 5 times in three quarters 2011 fiscal years before.

In CDMA products, China Telecom is CDMA operator of the global maximum at present, user exceed apple in Verizon, cooperative partner of operator, CDMA of North American, already by scale. According to announcing the data newly, China Telecom CDMA users reach 108 million by the first half of this year, among them 3G user’s scale exceeds 21,540,000.

China Telecom insider reveal to the intersection of Sohu and IT apple start the intersection of CDMA and research and development of edition on 2008, and China Telecom keeps in touch with the apple since the second quarter of 2010. The earliest official statement of China Telecom comes from its general manager Wang Xiaochu in the speech when Hong Kong is interviewed by media of August of 2010, Wang Xiaochu claims, ” if the apple introduces CDMA rule iPhone cell-phone, China Telecom hopes for cooperation ” . In May of this year subsequently, iPhone that Wang Xiaochu avowed telecommunications are being introduced into CDMA rule keeps in close touch with Apple, but not revealed more detailed content.

Telecommunications will be led into CDMA edition iPhone in the last ten days of October most quickly

According to media, the new iPhone of the apple, to the second week of September 6 – 15 of September Some day list,and change at first at North American by conventions that market list at first, 4 million first batch of departments may choose a plurality of markets including China to start to sell at the same time. Separately according to news, the new iPhone may include new iPhone5 and iPhone4S of the simplified version, among them the spare part supplier has already begun the trial production of 400,000 in the near future.

Reveal to Sohu IT, China Telecom has already reached the preliminary agreement with the apple according to the well-informed person, CDMA edition iPhone be led into China in about the last ten days of October most quickly. In introducing the way, telecommunications will be led into CDMA edition iPhone4 and iPhone5 at the same time, so as to the form which advanced users match while forming. But that CDMA edition iPhone4 is still iPhone4S specifically, this well-informed person does not call it ” sure ” .

Local Carriers put out iPhone contract set menu one after another

At present, include local branch companies of China Telecom such as Guangdong, Zhejiang, Jiangsu, Shanghai, Anhui,etc. have already offered ” service of the number burning ” to CDMA edition iPhone4 successively . Some southern branch company personnel of China Telecom reveal to Sohu IT, offer CDMA edition iPhone4 ” number burning ” ” there is not a technical matter at present ” to serve ,Mainly provide it for interior employee of telecommunications in order to test the relevant business at present, but does not get rid of users to ” have a taste of a delicacy ” through the third company .

Following telecommunication of Anhui, net friend claims today the telecommunications of Ningbo begin to offer ” purchases machine and networks and returns to the telephone expenses ” to local user too Activity, user Business Hall, Jiangdong keep fit high Business Hall, the intersection of high and new technology industrial development zone and Yang Mu the intersection of 碶 and the intersection of way and Business Hall purchase machine after the number burning at the gate of west Ningbo telecommunication Haishu, can network and participate in telecommunications ” Happy to enjoy 3G set menu ” ,The highest and can be presented the telephone expenses of 5980 yuan, return in 36 months.

The analyst in the industry thinks, the apple and what the operation is discussed and judged are very harsh, this is that China Telecom fails to reach the concerted reason with the apple slowly too. If the terminal station of China Telecom is replenished and fixes too high, will face loss oneself; Overlow and will lose attractive force to consumers, so the final subsidy level may keep with CHINAUNICOM at the same level.

It analyze by organization it expand apple in in there keep being optimistic is cooperation of China, Morgan the intersection of person and smooth profit expect, end fiscal year in will it be September 2012 year, China whether Apple contribute the sales amount of 9 billion dollars, it was 2,900 million dollars and previous fiscal year.

Responsible editor: Zhang Xia


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Definition of wireless communication

Wireless communication Wireless communication It is the characteristic that can spread in the free space with the electromagnetic wave signal that carries on a communication way of information exchange, in the communication field of information in recent years, it is the wireless communication to be with the fastest developing speed, employ the widest one. The wireless communication that is realized in moving is generally called mobile communication again, people call the two jointly wireless mobile communication. ... Read more

Communication world weekly magazine: Technology gathers together in ten years under IP

If 10 years ago, two sending, ADSL that CDMA and GSM formed 2G made the fixed network enter into broadband era, the emerging and letting people’s communication be made gradually of 3G technology ” Very fast and very convenient ” ,10 years later today then, IP revolution under 4G goal is expected to enable the application merging the network and merging give play to endless potentiality, make ” It is better and stronger ” . ... Read more