Building the 4G wireless network: Exploring LTE design and services drivers

This four-part telecommunication Insights guide takes an in depth check up on however 4G semipermanent Evolution (LTE) design and technology designing and preparation choices ought to be influenced by LTE service opportunities in varied wireless markets, moreover as why carriers ought to evolve their railway network infrastructure toward associate Evolved Packet Core for wireless broadband and the way changes in railway network technology and operations area unit being driven by these problems.

Wireless operators' 4G LTE design and infrastructure designing choices area unit being driven by a mix of rising wireless services, a immensely swollen set of mobile devices to support, the chance to supply broadband access wherever wireline is not appropriate, and changes in users' social and content-consumption behaviors. within the 1st of 4 in-depth articles on building out 4G LTE spec, telecommunication authority Tom Nolle, president of CIMI business firm., appearance at however every 4G LTE market driver will take LTE designing in a very slightly completely different direction.

Few individuals within the mobile trade dispute the sure thing of 4G semipermanent Evolution (LTE), however the temporal order and therefore the nature of deploying LTE network technology and infrastructure is a smaller amount sure. instead of a one-size-fits-all approach, 4G LTE design is being determined by the particular competitive and chance drivers that give the impetus for operators to shift to LTE. The solutions vary due to important variations in wireless markets.

The most credible driver for deploying 4G LTE design, however, is that the market-wide shift from a voice-driven wireless revenue model to a spotlight on non-voice services -- i.e., broadband information and video. Operators worldwide are providing unlimited-usage models, and competition is driving down mobile per-minute costs. At best, voice average revenue per user (ARPU) is capped, and it's probably to spiral down over successive 5 years. Short message service (SMS) is below similar pressure, therefore information and content services that embody video area unit the hope of the longer term.

The most effective mechanism for promoting mobile information services has been the expansion in smartphone use. The Apple iPhone created smartphones a market development, spawning a number of competitive models and therefore the entry of Google's ASCII text file mobile robot software as a general rival. to make robot, Nokia and Intel -- that each antecedently offered their own ASCII text file Linux smartphone platforms -- united to mix their programs to spice up market interest. Proving the purpose, trade statistics purpose to smartphones creating up a 3rd of all phone sales inside a year.

In the U.S. alone, smartphone use has clogged cells and whole railway areas, moving the quality of smartphone information services and therefore the services offered via ancient handsets. Smartphones conjointly intensify the competitive good thing about higher mobile information speeds, and therefore the success of smartphones can accelerate 4G LTE design preparation.

Multiple wireless economic process drive 4G LTE evolution

The wireless economic process driving 4G LTE design preparation area unit several and sophisticated. Here's a short summary of the most forces that operators ought to consider:

Third-party developer programs. a subject matter associated with the smartphone is that the explosion of interest in third-party developers, applications and application stores. each smartphone vender currently has one, and therefore the GSMA -- a GSM-focused trade cluster -- declared associate initiative to make an identical application framework and store across 24 operators, and membership is growing. Phone applications are a main focus of Microsoft's new mobile design, Windows Phone seven.

Apps give associate assist. Applications area unit a natural pairing with smartphones as a result of a all-purpose browsing perform is of restricted worth to users, as a result of the little screen and therefore the problem of manipulating the device to navigate websites whereas mobile. Applications will draw on-line data, however they package the user navigation in a very means per mobile device and user constraints. Applications do not need 4G LTE services, however most operators area unit reluctant to create substantial investments in 3G-based application stores and repair layer design for concern that the success of the investment might hyperbolize 3G networks.

Taking the place of wireline broadband. In rural areas and developing economies, 4G LTE spec evolution is being aroused by the necessity to supply wireless services as another to fixed-wire broadband services. several developing countries depend upon itinerant services as a result of they lack fixed-line infrastructure. In these markets, it might be unproductive to aim to deploy wireline broadband given the low economic densities obtainable to justify it. LTE networks supply a huge advantage in these areas by providing a wireless service that may be accustomed support fastened broadband access in selected homes and businesses from constant infrastructure that supports ancient mobile services. This driver is especially valuable in areas that depend upon business as a result of net access is progressively a baseline demand for travelers.

Regulatory problems. Public and restrictive pressure to incorporate broadband access in universal service subsidies or to fund rural broadband widens the scope of interest in LTE as a fixed/mobile combination. once LTE design is paired with frequencies that provide affordable vary, it will serve a reasonably massive earth science economically whereas supporting each fastened sites and mobile services. As before, this doctrine offers higher|a far better|a much better|a higher|a stronger|a more robust|an improved} come on infrastructure and better use of scarce spectrum resources. WiMAX, the opposite 4G technology, is additionally suited to the agricultural market, however LTE is usually viewed as a a lot of appropriate strategy as a result of it's associate evolution of 3G wireless and is a lot of versatile wherever mobile phones and wireless broadband be.

Mobile appliance explosion. A final important driver for LTE is that the mobile appliance explosion, 1st seen within the use of network-enabled e-book readers and currently increasing to new-age pill appliances. These devices area unit rising because the core of a replacement series of business models supported delivering content to users UN agency area unit less "mobile" and use the device from a spread of fastened locations as hostile victimisation it whereas moving -- virtually. Operators expect that this migratory-use behavior model can produce sizable demand on cells in locations wherever individuals sit and socialize (i.e., classic welcome sites).

Supporting mobile users with completely different usage patterns. Some network operators offload 3G network traffic victimisation hotspots and Wi-Fi to support these users, however others like better to keep their users on their own cellular networks victimisation femtocells. Among the benefits of femtocell technology is that the proven fact that it are often applied to either 3G or 4G/LTE networks, however given the sure thing of LTE design preparation, most operators say they attempt to deploy femtocells as a district of their overall LTE program. Femtocells also can be employed in the house to confirm that LTE customers have sensible service even throughout the amount of transition from 3G.

Wireless voice complexness. several operators conjointly face a cost-side driver for LTE architecture: the necessity to modernize voice services around voice net Protocol (VoIP). as a result of 3G voice is predicated on time-division multiplexing (TDM), as most wireline voice services area unit, the match between the 2 has been sensible up to currently. because the wireline voice change plant ages, it becomes tougher to justify reinvesting within the technology, given the sharp downward trend in voice valuation and therefore the accumulated competition from net voice services like Skype. If wireline voice is to shift to VoIP, then wireless voice ought to moreover.

The interest in moving to a lower-cost VoIP service model has accelerated since 2008, partially as a result of of world economic conditions and competition from over the prime (OTT) players like Skype and Google that has become a lot of intense. whereas few operators arrange a fork-lift voice infrastructure upgrade, most expect that they're going to be moving aloof from the TDM model over successive 5 years, and a call to shift to packet voice for mobile services would facilitate this migration. several operators area unit watching making a parallel VoIP model supporting each mobile and wireline users whereas step by step phasing out the older voice infrastructure because it ages.

The bottom line on 4G LTE design preparation

Operators gain the advantage of upper information rates per cell from 4G LTE, larger client capability per cell, and a lot of economical use of backhaul and railway connect infrastructure for services that area unit progressively data-dominated. the present explosion in smartphone and mobile appliance interest makes it clear that the markets will quickly stress the capacity of 3G networks which further 3G investment are problematic if there's any risk that competitors will leapfrog to 4G. as a result of that risk exists in nearly each developed wireless market, there's very little probability that a given mobile operator won't confront a minimum of one amongst these LTE drivers in its spot within the close to future.