Network Vip

QoS, IPv6, soft to exchange, and VoIP completely mistaken?

Yan YueLong Communication world

Gao HanZhong

This article is sent in ” telecommunication science ” 2003-02 originally, because this gentle author subverts and queries all existing technology, hereby pluck, welcome to discuss.

The development of the network of future generation is not merely the increase of the bandwidth, the more important thing is slope is flowing to the media in the flow of the data. The core of the network of future generation makes a reservation transmit information, but the amusement, consumption, carrier enjoyed, it is amusement economy and pillar economic in experience in the future. Enormous market employed in the face of the large-scale video which consumers longed for, the traditional IP trader is at a loss what to do, it is a brand-new market that the future video media flows, the historical fact has already been proved repeatedly: The telephone network which conveys the pronunciation does not depend on the telegram technology in the past, IP network which transmits the computer file does not depend on the pronunciation telephone technology in the past. The same, the strong video media’s drift net does not depend on computer information processing and transmission technology in the past either.

At present, about of future generation view and discuss a lot of of network, author in view with a lot of loud to meet differently expert at present not held under this text, and pointed out most IT experts are regarded as the directional mistake of the classical theory at present with the frank word.

1 recombinates the resources with wide and chip

For over 100 years, because the horizontal inscribed board with wide resource is exhausted, various communication theories and technology are mostly centring on the problem of how to utilize bandwidth effectively. These theories and technology include: Modulate demodulation, channel code. Data compressing, multi-user’s replying and using and procotol,etc.. But the development of the optic fibre technology has enlarged the originally most valuable bandwidth resource a million times in recent years, the fundamental change has appeared with the resource pattern of the chip from this in the bandwidth. Know such changes objectively, the development of communication theory and technology has positive realistic meanings.

Will it be the eighties the 20th century, break-through of microelectric technique, make the intersection of chip and the intersection of resource and explosive expansion. According to the development speed that one Mole of laws announces, Intel is putting out CPU updated fast constantly. In pace with this, Micmsoft also updates its operating system fast, the vast application software supplier puts out the application software synchronously. The application so in pace with resource, the chip resources making the explosiveness increase get benign absorption, bear the weight of and consume, also make the price of pc maintain at a basically steady level, and then bring up the whole pc industry.

Entered people in the 1990s, the break-through of mere communication, impelled the explosive expansion of bandwidth resource. In foreseeable future, the speed that the bandwidth capacity increases will be several times as much as the speed that the chip capacity increases. But not formed a kind of application in pace with resource so far, has come to absorb. Leaderette: With the evaporation of cybereconomy bubble, the global telecommunication industry is depressing continuously, where is the root cause of trouble of the telecommunication industry, how could go out of severe winter, have already become the focus. It does not represent the view of our publication that this is gentle, but there are its unique visual angle and innovation, hope to cause the thinking of the industry personage and contend. Bear the weight of and consume the bandwidth resources of so explosive expansion. ‘ when the pronunciation and user’s total amount of data are transferred from high growth to stagnation because of the market saturation, cause the pole calamities of the whole telecommunication industry. Have data show, during being from 1998 to 2001, to transmit ability, increase 500 always optical cable, but the bandwidth demand of the same period has only increased by 3 times. In front of the harsh fact, communication and network trade are on condition that have no prewarning at all, entered unprecedented severe cold suddenly by one red as fire. The market value of the whole value chain of American communication network trade has lost 1,000 billion dollars, the accumulation over the past six years of related NASDAQ is cleared off, the level by 1995 of return of total value. After being ignorant, it is only normal adjustment of stock-market bubble that people look forward to this, have neglected the fact that the technical development of the network misplaces. Various network solutions of what the industry is praised highly at present, it is unable to provide the killer application sufficient to let everybody foot a bill for consumers, it is the very crux of this result. Employ without the slack large-scale video in consuming bandwidth ability Carry on the basic innovation to the traditional business, telecommunications and the network industry can not go out of the abyss of the disaster forever. Go through such heavy setback, can’t expect several original IP technological companies to create the miracle, turn back the lost game. Must scrutinize the directional mistake existing in the network technique at present strictly now.

The industry is regarded as Softswitch, VoIP, IPv6, QoS, MPLS, MPEG4, HFC and ADSL of top science and technology,etc. at present, are in fact all only ornate writings. The something in common of the technology is to depend on increasing the chip complexity to obtain some, faint progress, so is not enough to change the predicament of the network trade. Enormous market employed in the face of the large-scale video which consumers longed for, traditional IT technology is at a loss what to do. The technologists beg in more complicated software, stronger CPU, faster chip. They have not realized the motive power chip resources of traditional IT industry should already be expressed with the high-quality video as the bottle of development of network of future generation, take up the great bandwidth. The author sums up this phenomenon as one bit of demand laws Law of Bit Significance : ” the bit amount that information needs is inversely proportional to the value that more reflects in the network ” .

This seemingly simple discovery, have strong regenerative effects. It has announced the development trend of the network is not that the simple bandwidth increases in the future, the more important thing is the intersection of data and quantity that network bear the weight of slope to flow media constantly. With social progress, the intersection of network and the intersection of information and the intersection of subject and chatting on video in an all-round way at last. In fact, the evolution trend of IT trade has already confirmed the above-mentioned conclusion at present.

After more than 30 years of development, existing technology has realized the transmission of the characters data well. And the actual need is dealt with and in the information transmitted, non-legible, with amusement, communicate effectively. Help user, meet human nature, turn demand into message of goal ‘ The author think can be called broad information Main part of data quantity. This kind of data is large-scale flow medias represented by video, the speed that its demand increases is much higher than the characters data. Realize that deals with and transmits the large-scale flow media with high quality, and solve the security of the network, controllable and problem of charging effectively, it is telecommunications, network industry that dream of, but the long-term difficult problem that can’t be solved, this kind of different and past demands is a key point of growth of the network of future generation. One bit of demand laws has indicated the present network circle has already been monopolized in IP technological big company by several and misled, moving towards a wrong direction. Being favored with times later stage, Internet is omnipotent, IP telephone is fashionable for a time, IT technology rises in this world, people thought by mistake so long as Internet added small S and unified the whole country as an all-round network. But the author concludes this is a dead end.

From the above-mentioned phenomena and trends, the author realizes a difficult chance to meet of decades, present situation and Microsoft that year are extremely similar while putting out DOS operating system, it is shown as:

Correspondent to to the market of PC of times, an large-scale flow media handles the conduct and sets up the high-efficiency network that relied mainly on the fact that the flow media transmit at present, will spend a little investment than any scheme of transforming Internet, high in efficiency. So adopt one pair of networks to coexist on backbone network, combine the developing direction that all network services are the network of future generation on the user end, also telecommunications and the network industry develop the only outlet of the large-scale video service in a short time.

The conclusion is: The network of future generation can offer multimedia with abundant content service, but only a high-efficiency simple flow media network, but not some multimedia networks.

4 mistakes about QoS

QoS is one of the focuses which the insider discusses. Seem that can solve the difficult problem that Internet transmit the video after having QOS. The author thinks this is completely mistaken. The main countermeasure of QOS is to suppose the flow media content takes minority at present, and serve preferably, in fact equivalent to network in the network. This can be compared to to the club some important customers release the gold card in order to show and distinguish.

But imagine as most customers hold the gold card, then its privilege that has priority just performs practically no function. The video flow media is completely different from QOS mechanism of the file packet, can not shut together at all. When the network is crowded, the non- important file can be sent a bit more slowly, even reduce the file flow TCP agreement by losing and wrapping up . QoS of the file packet is the aspect per packet base based on specific bag . But no matter the intersection of video and flow media or not can delay while being important, be unable to throw the bag. Because a intermittent film means having no film. It is impossible for people to only see the half-court film because of spending less money. Just as the airline can wait for the cabin, economy class,etc. to sell the plane ticket separately, the first class guarantees the seat, when the plane is crowded, the airline needn’t sell the discount ticket. But the ticket of no matter what price it is, so long as board a plane, must guarantee to send to the destination at the same time. Here does not exist ” Serve preferably ” Concept. So QOS only agrees for video flowing or denial of service, can’t be serving and reducing quality midway. QOS of the flow media is basedding on serving the aspect per call base wholly . QoS flow media proportion does not high in the intersection of network and total the intersection of data and quantity in precondition of scheme at present. But develop towards multimedia with the network service, the network transmits the content and slopes to the flow media constantly, will destroy the precondition of QOS when the time comes. So, seemingly valid QOS technology collapses and reserves the inevitable seed of trouble for the network in future now.

People had thought in the past ATM could solve QOS question improving, because ATM could divide user’s data into 5- 6 kinds, and realize the end to the treating with a certain discrimination of the end. The author thinks this kind of law overly gives a strained interpretation. 100 enormous markets of flow media are the virgin land of a wide favor not cultivated the past. Various old technology, new technology will be in the fair play here. ATM technology and IP technology have tried by assuming the role of multimedia network, but produce little effect. ATM technology withdraws from the competition because the price is too high. IP technology once opened up a new market of computer file transfer, made the immense success, and will continue occupying this market for the not replacable advantage. Under the circumstances that the excessive propaganda of some manufacturers was guided, people thought habitually IP technology would be also extended to the market of flow media. But it will be a fact with low efficiency, with bad performance that the file packet neglected by seeing bears the weight of the flow media. Because IP technological heredity is not fit for the transmission of the flow media frequently of Goddess of Mercy. The same, IP network heredity of depending on offering the free service to develop does not possess and develop safely. Charge the commercial mode of the business reliably. The natural instinct attempting to change IP occupies the market of commercial manageability flow media that oneself can’t bear, it is wrong on logic, has violated the original intention that IP produces, have deviated from setting up network spirit of Internet. IP era already been over. After developing rapidly in nearly ten years, the revolution of IP has already stagnated, has entered a slow construction phase. Though IP technology still keeps the advantage today, IP experts are still harangueing, hope expanding IP technology to the flow media field. But like TV in the fifties such as century, the large-scale computer of the sixties, the microprocessor of the seventies was the same as PC of the eighties, IP which is favored with times has already been over as one era. IP this whiff of trends once drove the development of economy swiftly and violently like this. Its end is not because of its failure, it is not its task that has already been finished, but a new era has already come. Enter the century correctly, a new market taking amusement as the core is ripe, the new network technique relying mainly on video flow media will influence each family. The author calls him as ” The technology of sitting room ” ,Israel is that differentiates PC and IP ” Desk-top technology ” . Two technological essential difference of category these operate at short range ‘ Its core is information As to viewing and admiring remotely ‘ Its core is amusement . The new era of this amusement economy is to culture. The influence of economy and politics will be more thorough than IP era. In this new economy, the communication broadband, bandwidth of storage will replace the position of the chip of the computer, become motive force of social progress.

The conclusion is: IP network relies mainly on dealing with the file data of the computer, always so.

—-” the communication world ”