移动互联网发展-英文

DaisyENGLISH ON NETWORKSThe mobile networkingAbstract:Mobile Networks are at the brink of becoming truly All-IP Networks, providing all services through IP technology. This opens the door for new advancements of mobile systems and all parts of them, along with the efforts taken to advance Internet technology. The necessity to advance the IP based mobile network in the upcoming years stems from the rapid growth of IP multimedia application traffic. Such demand for an unprecedented network capacity will not be supported by a same level growth of the revenue. Consequently, to cover future investments a higher network efficiency in CAPEX and OPEX is needed. In addition to an expected increase in efficiency, new, innovative user-centric services are needed to exploit the value of the mobile network: The latter address emerging resources inside the network such as storage and processing power that demand for new mobility management and resource management solutions taking service locality, service roaming, virtualization of resources and user perceived quality into account.Ⅰ）Mobile NetworksThis workshop focuses on the mobile core network. We take a deployment of air interfaces such as LTE-Advanced for well underway and focus in concepts and technologies for the advancement of the core network. Contributions are sought for all network layers ranging from high-speed transport to service delivery platform.With this workshop, we plan to continue the workshop AMN 2011 to be held at ICC 2011 in June also in 2012 to establish a workshop series right in time when industrial and academic research is taking shape and progressing towards commercialization.The emerging variety of multimedia services also pushed by the heterogeneity of end systems ranging from traditional mobile phones to high resolution portable smart screens, demands for new, efficient resource management schemes such as mobile network embedded CDNs or content specific mobility management schemes. With available processing and storage space in the network, services do not any longer have to remain statically at a central server, but may move closer to the consumer. Such migration is not limited to one operator domain, but service programs may roam between operator networks. Diversified resource control also demands for a next generation of quality of service provisioning taking the user perceived quality resp. Quality of Experience into account. In order to flexibly realize such new network and service solutions a level of indirection between the service delivery platform and the transport network is needed. Sophisticated mechanism are sought to allow for network resource isolations, realizing an abstraction layer for flexible control and management of coexisting, specific networks on one infrastructure substrate. It also allows abstracting from transport networks, supporting the flexible introduction of high speed bit transport through advanced (e.g. optical) network technologies.Moreover we see a number of areas, which have to be additional addressed in research for a sound evolution of the All-IP mobile core network. Most prominently a new emerging business environment that includes but is not limited to new business roles that relate to Network Virtualization, Cloud Computing and System Adaptability to the exploding number of 3rd party applications, taking into account the role of new players in an open service market and the economic market pressure that is grounded in fierce competition.Ⅱ）3G and 4GThis sudden 3G boom also gave mobile network operators enough incentive to invest huge sums of money for equipment necessary to get their 3G services functional.However, with the recent advent of 4G wireless networking, it all seems to be changing yet again. Now, those very operators who had readily plunged into 3G have their doubts about its sustenance. Carriers who are just thinking of wireless networking seem to prefer going in for the fourth-generation systems, better known as 4G.Why is this 3G vs. 4G issue even coming up? What is the reason behind this huge generation leap, as they say? Here is why 4G might soon become the preferred wireless network:∙ Less ExpensiveExperts think that 4G systems, which is still only starting off in many countries of the world, will end up being much cheaper than 3G. They believe that the new system can be built over the existing system, without the operator having to completely retool and purchase and entirely new spectrum.While 3G requires an entirely new spectrum and standard, 4G makes good use of existing technologies. In fact, 4G is capable of seamless integration with 2G, Bluetooth and even LAN networks, which makes it far more versatile than its predecessor.∙ Much FasterNeedless to say, 4G also provides far faster data services than its predecessor. This would also make the going much easier for those working with heavy applications, such as advanced VoIP and video streaming.4G networking transmits speeds of greater than 20MB per second, hence, can offer high bandwidth services anywhere it is installed, including homes, offices and public places such as airports, cafes and so on.This gives operators the opportunity to offer user much better services, thereby increasing their own businesses.High ProfitsSince the entire networking process is much cheaper for providers, they will be easily able to recover their initial financial investment in the project. Not only that, while they can offer much cheaper basic service to their customers, they could also charge well enough for providing advanced data services to business enterprises, which would like to maintain hotspots.Though 3G is not bad either, it becomes more difficult for the provider to recover his initial capital. LAN is already quite popular and offers relatively good speed and hence, any existing LAN user would think twice before going in for the much more expensive 3G.Mobile telcos who have invested heavily in 3G are now beginning to worry that their heavy investment may not yield the expected profits. 3G network providers too are finding it difficult to fund their venture.Of course, mobile 3G is yet strong enough to hold on in most nations of the world, and hence, will not totter too soon. In fact, many companies actually think of both 3G and 4G as complimentary networking systems, which would be able to workside-by-side, since each one has strengths that the other lacks.But for how long can 3G actually survive in the mobile networking race? Will it finally be completely washed over by 4G? Well, we can only wait and watch – time will unfold the answer.。