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  2. Data plan - Wikipedia

    en.wikipedia.org/wiki/Data_plan

    Unlimited data plans have seen a large increase in usage by consumers since their initial introduction by U.S. network T-Mobile.These plans, instead of setting an overall maximum for the user, have an amount set-up that, when surpassed, will slow the speed of the network for that user.

  3. Signal strength in telecommunications - Wikipedia

    en.wikipedia.org/wiki/Signal_strength_in...

    The electric field strength at a specific point can be determined from the power delivered to the transmitting antenna, its geometry and radiation resistance. Consider the case of a center-fed half-wave dipole antenna in free space, where the total length L is equal to one half wavelength (λ/2).

  4. Mobile phone signal - Wikipedia

    en.wikipedia.org/wiki/Mobile_phone_signal

    Since cell phones rely on radio waves, which travel through the air and are easily attenuated (particularly at higher frequencies), mobile phones may be unreliable at times. Like other radio transmissions, mobile phone calls can be interrupted by large buildings , terrain, trees, or other objects between the phone and the nearest base.

  5. Mobile data offloading - Wikipedia

    en.wikipedia.org/wiki/Mobile_data_offloading

    The code operating on the rules resides in an end-user device, in a server, or is divided between the two. End users do data offloading for data service cost control and the availability of higher bandwidth. The main complementary network technologies used for mobile data offloading are Wi-Fi, femtocell and Integrated Mobile Broadcast.

  6. Cellular traffic - Wikipedia

    en.wikipedia.org/wiki/Cellular_traffic

    where N c is the number of channels per cell, BW is the system bandwidth, and A c is Area of cell. Sectorization is briefly described in traffic load and cell size as a way to cut down equipment costs in a cellular network. [2] When applied to clusters of cells sectorization also reduces co-channel interference, according to Walke. [1]

  7. Link budget - Wikipedia

    en.wikipedia.org/wiki/Link_budget

    A link budget is an accounting of all of the power gains and losses that a communication signal experiences in a telecommunication system; from a transmitter, through a communication medium such as radio waves, cable, waveguide, or optical fiber, to the receiver.

  8. Comparison of mobile phone standards - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_mobile_phone...

    This is used in GSM to separate cells, which then use TDMA to separate users within the cell. Code-division multiple access (CDMA) This uses a digital modulation called spread spectrum which spreads the voice data over a very wide channel in pseudorandom fashion using a user or cell specific pseudorandom code. The receiver undoes the ...

  9. Measuring network throughput - Wikipedia

    en.wikipedia.org/wiki/Measuring_network_throughput

    Few systems transfer files and data by simply copying the contents of the file into the 'Data' field of HDLC or PPP frames — another protocol layer is used to format the data inside the 'Data' field of the HDLC or PPP frame. The most commonly used such protocol is Internet Protocol (IP), defined by RFC 791. This imposes its own overheads.