Fourth generation mobile communication technology : refers to the fourth generation mobile phone mobile communication standard, foreign language abbreviation: 4G, the technology includes TD-LTE and fdd-lte (strictly speaking, LTE is only 3.9G. Although it is publicized as 4G wireless standard, it is not recognized by 3GPP as IMT advanced, the next generation wireless communication standard described by the International Telecommunication Union. Therefore, in a strict sense, it has not yet reached the 4G standard. Only the upgraded version of LTE advanced can meet the requirements of ITU for 4G.) 4G is a combination of 3G and WLAN, and can quickly transmit data, high quality, audio, video and image. 4G can be downloaded at a speed of more than 100Mbps, compared with the current domestic broadband ADSL (4MB) In addition, 4G can be deployed in places not covered by DSL and cable TV modems, and then extended to the whole region. Obviously, 4G has incomparable advantages.

  Distribution of major mobile communication frequency bands in EU:

LTE-FDD :900/1800 /2100/2600MHZ

LTE-TDD:2600MHZ

Mobile communication products of EU CE Harmonizing standards

2G   Mobile phone test

GSM900/DCS1800MHZ   EMC standards:   EN301489-1/7    RF   standard EN301511   security   EN60950-1

SAR    ： EN50360 EN62209-1/2

3G   Mobile phone test

WCDMA: EN301489-1/24 EN301908-1/2     EN50360 EN62209-1/2 EN60950-1

4G   Mobile phone test

LTE FDD:

EMC EN301489-1/23     RF EN301908-1/13    EN50360 EN62209-1/2 EN60950-1

4G Standard coverage of mobile phones BAND1/3/7/8/33/34/38/20.

FCC2G/3G/4G Test standard   FCC PART 15B FCCPART 22/24 /27    FCCOET 65

4G Mobile testing equipment is expensive. At present, there are only national laboratories in China   Huawei   ZTE and other large communication companies and foreign testing institutions have equipment, so the test equipment is less, resulting in high prices. It increases the certification cost of mobile phone manufacturers.

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