The key difference between gsm and cdma is the multiple access method they use. Anyone with cell phone service in the united states knows that there are four major wireless carriers. Gsm and cdma are competing wireless technologies with gsm enjoying about an 82% market share globally. In second and third generation wireless communication a. To save battery life, im planning to switch from the automatic to the manual mode, and i want to know what happens if i stick to gsm or wcdma.
What is the technical difference between selecting gsm and selecting wcdma in network mode settings menu. Wcdma is a wideband digital radio communications technology, which provides new service capabilities, increased network capacity and reduced cost for voice and data services compared to 2g technologies. Gsm reuses same frequency channels in nonconcentric cells so that inter cell interference is mitigated between neighbour cells. What is gsmwcdma and should i leave my settings like this or. Parts of the wcdma standard are based on gsm technology. These are the two competing technologies in the field of mobile communication. You must know wcdma which stands for wide band code division multiple access.
But instead of being an mvno, sprinttmobile owns their own bandwidth, and could be the first major independent wireless provider. Differentiate between gsm and cdma telecommunications akshay kumar 070815 pdf. Difference between gsm and cdma the worlds renowned mobile phone network technologies are gsm global system for mobile communication and cdma code division multiple access. Jun 02, 2017 the key difference between gsm and cdma is the multiple access method they use. They both have derivatives for use with 3g phones known as universal mobile telecommunications system and cdma2000, respectively.
Global system for mobile communications and code division multiple access are two competing standards in cellular service. Understanding the difference between gsm and cdma will allow you to choose a carrier that uses the preferable network technology for your needs. Gsm, which stands for global system for mobile communication, is the more popular cell phone standard worldwide, but not as much here in the united states. Instead of relying on timeslots, each mobile can determine its broadcast by the negotiated code. Mar 31, 2012 gsm stands for global system for mobile communications and cdma stands for code division multiple access. Commonalities between cdma2000 and wcdma technologies qualcomm incorporated october 2006. Cdma2000 success story in japan as of nov, 2003 total 3g sub. Difference between wcdma and gsm difference between. In gsm, the core network consists of two service domains cs circuit. The gsm, shorthand for global system for mobile communication, is a standard that was developed by the european telecommunications standards institute etsi to describe the 2g network for cell phones. Wcdma and gsm layer priorities free download as powerpoint presentation. Difference between gsm and 3g network technology compare. Umts requirements multimedia service requirements high data rates at least 384 kbps widearea coverage up to 2 mbps indoor and lowrange outdoor coverage high service flexibility packet and circuitoriented services wide range of bit rates with high granularity multiple services on one. Id actually prefer an explanation like im 21 and not an engineer.
Following table mentions difference between cdma and gsm technologies. If it was much more better, there would be a world wide competition between gsm and cdma. Gsm wcdma auto connect automatically switches between 2g. Cdma mobile communication standard uses, well the obvious cdma method.
Backbone network the network evolution from gsm and radio access from utra the third generation mobile network evolved from the second generation systems such as gsm and gprs gsm. Gsmwcdma auto, or gsm only setting on android phone. In case of cdma, each device like a mobile phone or a wireless modem is given a unique code that is registered with the carrier. Wcdma wideband code division multiple access not multiplexing 2. Wcdma is the standard that most gsm carriers moved to when upgrading to 3g. Whereas, gsm uses a combination of tdma and fdma methods. Gsm, dcs, pcs and wcdma is designed and implemented on the bare pc board that is same size of the mobile phone. Gsm air interface uses separate time slots in separate frequency channels for each user, so that, there will be less interference between two separate users accessing the network. Gsm global system for mobile communication and 3g 3rd generation mobile technology are both mobile communication technologies that have been evolved over the time.
Cdma and gsm are radio technologies and mobile phone is just an antenna to recieve these radio signals. Both the technologies can be used with 3g standard phones, but 3g gsm speeds can be faster than 3g cdma speeds. Difference between cdma and gsm categorized under communication, technology difference between cdma and gsm when we buy a mobile phone, we usually dont concern ourselves with the standards or technologies that our mobile phone uses. Gsm network is consists of mobile station, base station subsystembts, bsc and networkmsc and operation subsystem. Cellular carriers including sprint pcs, cingular wireless, verizon and tmobile use one or the other. This was created in 1991 as a replacement for the first generation 1g analog cellular networks. Audience this tutorial has been designed for readers who want to understand the basics of gsm in very simple terms. Technology what is the difference between wcdma and lte. Gsm vs cdma whats the difference between the two technologies. This article is all about the difference between gsm and cdma technology. I know gsm is what atttmobile use and cdma is verizonsprint, but thats about the extent of my knowledge. Jul 25, 2008 cellular carriers including sprint pcs, cingular wireless, verizon and tmobile use one or the other. Gsm global system for mobile communication and 3g 3rd generation mobile technology are both mobile communication technologies that. However, there is another aspect of mobile network providers.
Gsm supports transmitting data and voice both at once, but cdma have not this feature. Cdma has proven to be faster in speed than gsm with a downstream rate of 2mbps whereas gsm provides 360kbps. Wcdma wide band code division multiple access umts before we talk about 4g or gsm. In case of gsm, the end user doesnt have access to the entire frequency band whereas in case of cdma the end user can access the entire frequency. Tdmafdma, cell frequency planning is more tedium task as frequency and time planning need to be carried out in cdma frequency planning is minimal. Wcdma vs gsm wcdma wideband code division multiplexing access and gsm are two technologies that are used in mobile telecommunications. Technically gsm global system for mobile communications, originally from groupe special mobile. Gsm, dcs, pcs and wcdma is designed and implemented on the bare pc board that is. First it is important to know that one is an access scheme and the other is not. Commonalities between qualcomm incorporated october 2006.
Gsm took nearly 7 years to achieve a similar milestone3. The major difference between the two technologies is how they turn voice data into radio waves and how the carrier. Gsm stands for global system for mobile communication, while cdma stands for code division multiple access gsm uses fdma frequency division multiple access and tdma time division multiple access. Probably much in the same way as straight talk an mvno subsidiary network that uses both gsm and cdma technology. Gsm, wcdma, android, jelly bean, kitkat under android 4. Difference between cdma and gsm difference between. Usually, the typical concerns for consumers regarding that service are low prices, great coverage and quality and selection of smartphones. Cdma is one of the types of mobile connections for making calls where as gprs is a technology for internet connections through a mobile phone. How will a tmobilesprint merger work if one is a gsm and. We take a closer look at some of the differences between gsm and cdma networks and how they matter to everyday consumers. Handover between cells with the same rf carrier macro diversity is used interrf handover. Gsm is the name of a standardization group established in 1982 to create a common european mobile telephone standard. Depends on the type of multimode ms implementations hard handover zeon pdf driver trial tw.
Gsm tutorial gsm is a globally accepted standard for digital cellular communications. Gsm wcdma auto, or gsm only setting on android phone. Gsm uses narrowband time division multiple access tdma for providing voice and text based services over mobile phone networks. Gsm stands for global system for mobile communications and cdma stands for code division multiple access. What is the main difference between cdma and wcdma. Difference between 3g and cdma tweet key difference. These two technologies differ in the way calls and data travel over the mobile phone networks. Wcdma networks are designed to integrate with gsm networks at certain levels. Commonalities between qualcomm incorporated october. Gsmwcdma auto connect automatically switches between 2g. Even canadas bell and telus started an hsdpa network, making them able to provide gsm phone selection. Wcdma and gsm layer priorities gsm lte telecommunication.
Differentiate between gsm and cdma telecommunications. Change of rf carrier handover between hcs hierarchical cell structure layers hard handover is employed between gsm and umts. Wcdma a brief overview by ericsson authorstream presentation. The difference between gsm, cdma, 3g, 4g, lte, etc. Jul 06, 2019 we take a closer look at some of the differences between gsm and cdma networks and how they matter to everyday consumers. Main difference, as the name suggest, is that wcdma sends the signal across the full band as spread spectrum signal thus uses 5mhz despite gsm that is limited to 200khz channels. Gsm stands for global system for mobile evolution, developed based on 3gpp standards. Radio access between the mobile terminal and the base station 2. It provides simultaneous support for a wide range of services with different characteristics on a. Technologywhite papergprs26 june 2000rjb page 4 of 23 the big picture the evolutionary path from gsm to 3g figure 2 gsm to 3g gsm global system for mobile is known as a 2g second generation digital.
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