Two Main Types of Cellular Wan – Gsm and CdmaEssay Preview: Two Main Types of Cellular Wan – Gsm and CdmaReport this essayTwo main types of Cellular WANGlobal System for Mobile (GSM)GSM is the worlds most used mobile wireless communication network as it dominated the Euro-Asia markets and is slowly taking over North America with companies like A& T in the USA using it. How it works is it uses a narrow 30khz band 30 which splits time-wise into three time slots this allows information to be significantly compressed this technology is called TDMA and has three times more capacity than the traditional analog. Bell Canada has recently launched their new 4G LTE in a number of regions in Ontario this past month in which they claim the network will be up to 3 times faster than the original CDMA HSPA+ technology they introduced just 3 years ago. Bell states that initial speeds will be up to 75MBPS with average speeds of 12-25 MBPS and as the technology evolves speeds will approach 150 MBPS. The frequency will still be at the Band 2 level which is 1900MHZ. The greatest strength of GSM over CDMA is that you can travel almost anywhere in the world permitting roaming charges and it also uses encryption so calls are more secure too.
Code-Division Multiple Access (CDMA)CDMA is a wireless network which found its roots during the second world war but wasnt commercially launched until the mid 90s. So how CDMA works is it digitizes multiple conversation, attaching a code that only the sender and receiver know, and then it chops up the signal and reassembles it using the code. Doing this makes it very secure. The frequency it operates at in Canada is 1900MHZ and 850MHZ most phones operate at the 1900 level but 850 is put to use when youre in more rural areas for instance somewhere in the interior of BC. Bell Canadas 4g HSPA+ which is offered throughout most of Canada currently has speeds of 21MBPS to 42 MBPS depending on locations. Downfalls of the CDMA system include its inability to offer international roaming and the fact that CDMA is a relatively newer technology it hasnt fully matured.
In 2009 a German company began making a product that was called The A9-A10, which was released commercially in September 2009 with the announcement of CDMA, but it would not succeed because the CDMA could not communicate with their existing customers with the new CDMA radio. In 2010 this is stopped as CDMA’s core business has changed from providing direct communication by phone calls to providing indirect direct messaging via a new radio system called AM-P to provide the same level of control over communication on-the-go. CDMA will be making it possible for customers to enjoy a much faster wireless network, as they are able to get around the world with a much cheaper way of moving around, they will have a better experience with their phone when using it in Australia and other countries.
From a CDMA perspective I don’t think that the current CDMA model is ideal, but for an app-based approach to data storage, I suspect it will be a nice move for people. Not only is it an easier way to upload files, but it gives users the chance to store content they may not need in a database. If you have a big budget to spend at home, you can access those folders, and the files may live alongside your device regardless of how many files you have on it.
In 2008, when Google acquired the company they implemented a major redesign of Google Cloud from 2000 that was initially going to remove the need for a cloud storage hub. After that their plans changed and Google dropped support from Google Now and switched to Google’s own cloud services. Since then they have started to move to a different technology and are now using it for data processing and storage. While I believe the initial design of the Google Cloud infrastructure (which was first designed by Ericsson in the late 90s, according to many) is a great leap forward they are still not the same as their competition. They really are quite different. As you can clearly see the Google Cloud architecture is currently designed to be used for storage. As well as this there is also the question of whether or not the main server used to store your files will be able to use the Google APIs and be able to run the app and you might want to keep your storage on that server for backups or something. If you have a small storage device and it’s not running Google APIs you may want to move to a cloud storage service. This may seem counter-intuitive given it is still very much possible Google will actually use Google Drive instead of an SD card/ USB drive for storage. It can also be argued that the Google Drive is no longer viable as there is only a few dozen of them available, in any case while the Google APIs are pretty decent. In any case I think the best solution for a CDMA device is to buy a different CDMA device. With that being said the Google Cloud service is being rolled out to the rest of the market as well and they will be launching one before the beginning of the year so keep an eye on what others are doing to ensure it comes to fruition.
I wanted to mention that this doesn’t mean that CDMA is dead or gone entirely. In fact it means that many people are still trying to get their device into the industry and