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2. Mobile phones on aircraft - Wikipedia

   en.wikipedia.org/wiki/Mobile_phones_on_aircraft

   Mobile phones on aircraft. In the U.S., Federal Communications Commission (FCC) regulations prohibit the use of mobile phones aboard aircraft in flight. [1] Contrary to popular misconception, the Federal Aviation Administration (FAA) does not actually prohibit the use of personal electronic devices (including cell phones) on aircraft.

3. Mobile QoS - Wikipedia

   en.wikipedia.org/wiki/Mobile_QoS

   Mobile QoS. Quality of service (QoS) mechanism controls the performance, reliability and usability of a telecommunications service. Mobile cellular service providers may offer mobile QoS to customers just as the fixed line PSTN services providers and Internet service providers may offer QoS. QoS mechanisms are always provided for circuit ...

4. 5G NR frequency bands - Wikipedia

   en.wikipedia.org/wiki/5G_NR_frequency_bands

   5G NR frequency bands. Frequency bands for 5G New Radio (5G NR), which is the air interface or radio access technology of the 5G mobile networks, are separated into two different frequency ranges. First there is Frequency Range 1 (FR1), [1] which includes sub-6 GHz frequency bands, some of which are traditionally used by previous standards, but ...

5. Spread spectrum - Wikipedia

   en.wikipedia.org/wiki/Spread_spectrum

   v. t. e. In telecommunication, especially radio communication, spread spectrum are techniques by which a signal (e.g., an electrical, electromagnetic, or acoustic) generated with a particular bandwidth is deliberately spread in the frequency domain over a wider frequency band. Spread-spectrum techniques are used for the establishment of secure ...

6. Spectral efficiency - Wikipedia

   en.wikipedia.org/wiki/Spectral_efficiency

   Spectral efficiency, spectrum efficiency or bandwidth efficiency refers to the information rate that can be transmitted over a given bandwidth in a specific communication system. It is a measure of how efficiently a limited frequency spectrum is utilized by the physical layer protocol, and sometimes by the medium access control (the channel ...

7. Smartphone ad hoc network - Wikipedia

   en.wikipedia.org/wiki/Smartphone_ad_hoc_network

   This has the potential to threaten telecommunication operators (telcos). Smart phone mobile ad hoc networks can operate independently and allow communications among smart phones users without the need for any 3G or 4G LTE signals to be present. Wi-Fi ad hoc mode was first implemented on Lucent WaveLAN 802.11a/b on laptop computers. Since Wi-Fi ...