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To locate a mobile base station in your area visit the AMTA Mobile Phone Tower Locator and enter your location.
The base station will also have a limit to the amount of bandwidth available for internet and data use.
The term 'backhaul' is often used when referring to the size of the pipe providing internet to a base station. I agree to Shutterstock's Website Terms, Privacy Policy, Licensing Terms and to receive emails that I can opt out of at any time. All plans come as a Standard license, and can be upgraded to an Enhanced license at any time. Things such trees, hills, buildings and land formations will have an affect on the coverage area. To help compensate you will find a lot more base stations to cover demand, and the cell sizes will have a 2-5km radius. A typical base station has about 168 voice channels available and once capacity is nearly reached the base station will seamlessly hand off a mobile user to another base station within the users range.
With the introduction of smart phones, the carriers have had to increase the channel bandwidth and base stations to ensure the internet does not become slow during peak periods. Growth tree (circuit) concept with mobile phone, technology, laptop, cloud computing, usb, pad and router icons. Everyone who signs up gets full access to our entire library, including our curated collections. Our Standard license allows you to use images for anything, except large print runs over 500,000+ or for merchandising.
Once you have downloaded your image, you have life-long rights to use it under the terms of the license purchased. In country areas where there are large open spaces the base stations will be further apart and the cell radius will be around 10-32km. If at any time you're unsatisfied with your experience with us, you can cancel your subscription.
A cell phone offers full Duplex Communication and transfer the link when the user moves from one cell to another.
Using extender cell technology like that used by Telstra's NextG™ network, a radius of 80-200km can be reached.
As the phone user moves from one cell area to another, the system automatically commands the mobile phone and a cell site with a stronger signal, to switch on to a new frequency in order to keep the link.Mobile phone is primarily designed for Voice communication. In addition to the standardvoice function,new generation mobile phones support many additional services, and accessories, such as SMS for text messaging, email, packet switching for access to the Internet, gaming, Bluetooth, camera with video recorder and MMS for sending and receiving photos and video, MP3 player, radio and GPS.Signal Frequency in Cell PhoneThe cellular system is the division of an area intosmall cells.


In FDMA, the transmitting and receiving frequencies used in each cell are different from the frequencies used in the neighboring cells.
The principle of CDMA is more complex and the distributed transceivers can select one cell and listen to it. Other methods includePolarization Division Multiple Access(PDMA) andTime Division Multiple Access(TDMA). Time division multiple access is used in combination with either FDMA or CDMA to give multiple channels within the coverage area of a single cell.Codes in the Mobile PhoneMobile phones have special codes associated with them.
The Mobile phones operate within the cells, so that it is easy to switch on to different cells as they move around.
A person using a cell phone can drive hundreds of kilometers and can maintain a conversation during the entire time because of the cellular approach.Activation of SIM CardSIM card(Subscriber Identification Module (SIM) ) is a type ofSmart cardused in mobile phone. The SIM is a detachable smart card containing the user’s subscription information and phone book. This allows the user to retain his or her information even after switching off the handset. Alternatively, the user can also change service providers while retaining the handset simply by changing the SIM.SIM card Securely stores the service subscriber key having 15 digits. If the IMSI is recognized, the network creates another number called aTemporary Mobile Subscriber Identity(TMSI), which is encrypted and sent back to the phone. TheControl channelis aspecial frequencythat the phone and base station use to talk to one another. When the Mobile phone move toward the edge of the cell, the cell’s base station will note that the signal strength is diminishing. At some point, the Mobile phone gets a signal on a control channel and directs it to change frequencies. This will switch the phone to the new cell.Mobile NetworkThe GSM SystemGlobal System for Mobile Communicationsis the standard for mobile telephone systems in the world. In GSM, the signaling and speech channels aredigital, therefore GSM is considered a2G(Second Generation) system. There are five different cell sizes in a GSM network These are macro, micro, pico, femto and umbrella cells. Macro cells are cells where the base station antenna is installed on a mast above average roof top level.
Femto cells are cells designed for use in residential or small business environments and connect to the service provider’s network via a broadband internet connection. Umbrella cells are used to cover shadowed regions of smaller cells and fill in gaps in coverage between those cells.Horizontal radius of the cell varies depending on the antenna height, antenna gain and propagation conditions.


There are eight radio time slots grouped into a TDMA frame.Mobile NetworkMobile phone converts voice, text, multi-media messages or data calls into Radio Frequencies (RF). Mobile phone base stations transmit and receive these RF signals and connect callers to other phones and other networks. Mobile phone network is divided into thousands of overlapping, individual geographic areas or ‘cells’, each with a base station. The size of a cell depends on the area of coverage and the number of calls that are made in that area.
The smallest cells are in crowded urban areas with large buildings and heavy population density, while the biggest cells are in rural areas, where people are dispersed.There are two types of channels used in GSM . To ensure this handover works, the phone constantly monitors the broadcast control channel of up to 16 neighboring cells.
In normal operation, phones continually adjust the power of the radio waves they send out to be the minimum needed for the base station to receive a clear signal. If a phone moves far away from its base station and if the signal is weak, the network consults the list and triggers a handover to a neighboring cell with best signal.Traffic channelsIt is used tocarry calls or other datafrom the mobile phone to the base station and vice versa.
Each burst comprises two consecutive strings of bits (a series of signals representing 1s and 0s), each57 bits long.RangeThe range within which mobile devices can connect is not a fixed figure. In addition to the Circuit board, Mobile phone also has Antenna, Liquid Crystal Display(LCD) ,Keyboard , Microphone , Speaker and Battery. Below is theBlock diagramof Mobile phoneThe circuit board is the heart of the Mobile phone. These chips store the customizable options of the cell phone, as well as the entire operating system.
The power and radio frequency sections of the phone, phone recharging and power management etc are controlled by this chip.
When the phone makes a call, it transmits the ESN and MIN- a unique tag- for your phone to the network at the beginning of the call.
Using a Scanner device it is easy to modify another phone so that it contains your MIN-ESN tags.



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