History of development of mobile phones

Posted November 12, 2009 By admin
Mobile phone, often referred to as mobile phones [1], Japan and Hong Kong and Taiwan areas are usually referred to as mobile phone, flashlight, carrying telephone, cell phone called there early, it can used in a wider range of portable telephone terminals.
Currently the most widely used worldwide is the so-called second-generation mobile phone (2G), with GSM and CDMA-based format. They are all digital formats, in addition to voice communications, it also can send and receive SMS (short messaging, SMS), MMS (multimedia messaging, multimedia messaging), wireless application protocol (WAP) and so on. In mainland China and Taiwan to GSM is the most popular, CDMA and PHS (PHS) phones are also very popular. Currently the industry is the third-generation mobile (3G) migration process.
In addition to the typical phone keypad mobile phone part of the phone features, but also contains the PDA, game consoles, MP3, camera, photography, sound recording, GPS, Internet access and more features, there is the PDA with phone functionality trends.
Oral phone, ear bearing and the corresponding microphone, handset are housed in a single handle on. Formerly known as mobile phones, portable, cellular phones, is portable, and can move within a larger range of telephone terminals.
1G
The first generation of phones (1G) is the analog mobile phone, that is, on behalf of the nineties in the 20th century, the United States and other television programs and movies appear in Big Brother. Developed the first cell phone is a Motorola Inc., Dr. Cooper. At that time, the battery capacity limitations and analog modulation techniques require huge antennas and integrated circuit development status, and so constrained, this phone looks boxy, can only serve as movable hardly portable. Many people call this cell phone as “bricks and mortar” or KINGBOX so.
This phone has a variety of formats, such as NMT, AMPS, TACS, but basically the use of frequency-division multiplexing is only for voice communication, the recipient effects of instability, and lack of confidentiality, the use of wireless bandwidth is not sufficient. Such cell phone similar to the simple duplex radio stations, call is locked in a certain frequency, use of FM radio stations can be eavesdrop on conversations.
2G
Second-generation mobile phone (2G) is the most common mobile phone. Often, these phones use the PHS, GSM or CDMA standards for these very mature, with a stable call quality and the right of standby time. In the second generation in order to meet the needs of data communications, a number of intermediate standards are supported on mobile phones, such as support for the GPRS MMS WAP and Internet business services, as well as a variety of Java programs.
3G
3G, is in English 3rdGeneration acronym refers to third generation mobile communication technology. Relative first-generation analogue phones (1G) and second-generation GSM, CDMA and other digital phones (2G), third-generation mobile phones generally speaking, refers to wireless communications and the Internet and other multimedia communications with a new generation of mobile communications systems. It can handle images, music, video streaming and other forms of media services including web browsing, conference calls, e-commerce and other information services. In order to provide this service, wireless network must be able to support different data transfer rate, ie indoor, outdoor, and driving environment to each support at least 2Mbps (megabytes / second), 384kbps (kilobytes / per seconds), and the transmission speed of 144kbps.
3G Mobile
Relative first-generation analogue phones (1G) and second-generation GSM, TDMA and other digital mobile phones (2G), 3G communication the name of the variety, the ITU defined as “IMT-2000″ (International Mobile Telephone 2000) standards, European Telecommunications giants claimed it as “UMTS” Universal Mobile Telecommunications System.
At present, the international 3G mobile phone (3G handsets) there are three kinds of format standards: Europe’s WCDMA standard, the United States, CDMA2000 standards and by our scientists to the TD-SCDMA standard.
Now “3G communication” is about to become the lips of the mantra of the so-called 3G, in fact its called the 3rd Generation, in Chinese meaning refers to the third generation of digital communications. In 1995 came the first generation digital mobile phones can only make voice calls; while 1996 and 1997 there will be a second generation digital mobile phone to receive data added features, such as receiving e-mail or web pages; the third generation of the main difference with the previous two generations of is the voice and data transmission speed of the upgrade, it can handle images, music, video streaming and other forms of media services including web browsing, conference calls, e-commerce and other information services. Relative first-generation analogue phones (1G) and second-generation GSM, TDMA and other digital mobile phones (2G), 3G communication the name of the variety, the ITU defined as “IMT-2000″ (International Mobile Telephone 2000) standards, European Telecommunications giants claimed it as “UMTS” Universal Mobile Telecommunications System. The standard provides mobile terminals in order to speed the move of its data transmission rate of 144kbps, outdoor static or walking rate 384kbps, while the indoor 2Mbps. However, these requirements does not mean that users can rate can reach 2Mbps, because the house building rate will depend on the detailed frequency planning, as well as organizations and carriers in close collaboration with the degree.
Future Mobile
Future mobile phones will be emphasis on security and data communications. On the one hand to strengthen the protection of personal privacy, on the other data services to enhance the research and development, more multimedia features were introduced in, phone will have a more powerful computing capabilities, a personal information terminals, not just with calls and text messages functions.
Phone will be more intelligent, miniaturized, safety-oriented, multi-functionality.
At present mobile phone
Currently the most widely used worldwide mobile phone is a GSM phone and CDMA mobile phones. In mainland China and Taiwan to GSM is most common, CDMA and PHS (PHS) mobile phone is also very popular, these are the so-called second-generation mobile phone (2G), they are digital formats, in addition to voice communications, it also you can send and receive SMS (short messaging, SMS), MMS (Technical) | MMS (MMS, MMS), wireless application protocol (WAP), etc.

Mobile phone, often referred to as mobile phones [1], Japan and Hong Kong and Taiwan areas are usually referred to as mobile phone, flashlight, carrying telephone, cell phone called there early, it can used in a wider range of portable telephone terminals.

Currently the most widely used worldwide is the so-called second-generation mobile phone (2G), with GSM and CDMA-based format. They are all digital formats, in addition to voice communications, it also can send and receive SMS (short messaging, SMS), MMS (multimedia messaging, multimedia messaging), wireless application protocol (WAP) and so on. In mainland China and Taiwan to GSM is the most popular, CDMA and PHS (PHS) phones are also very popular. Currently the industry is the third-generation mobile (3G) migration process.

In addition to the typical phone keypad mobile phone part of the phone features, but also contains the PDA, game consoles, MP3, camera, photography, sound recording, GPS, Internet access and more features, there is the PDA with phone functionality trends.

Oral phone, ear bearing and the corresponding microphone, handset are housed in a single handle on. Formerly known as mobile phones, portable, cellular phones, is portable, and can move within a larger range of telephone terminals.

1G

mobile

The first generation of phones (1G) is the analog mobile phone, that is, on behalf of the nineties in the 20th century, the United States and other television programs and movies appear in Big Brother. Developed the first cell phone is a Motorola Inc., Dr. Cooper. At that time, the battery capacity limitations and analog modulation techniques require huge antennas and integrated circuit development status, and so constrained, this phone looks boxy, can only serve as movable hardly portable. Many people call this cell phone as “bricks and mortar” or KINGBOX so.

This phone has a variety of formats, such as NMT, AMPS, TACS, but basically the use of frequency-division multiplexing is only for voice communication, the recipient effects of instability, and lack of confidentiality, the use of wireless bandwidth is not sufficient. Such cell phone similar to the simple duplex radio stations, call is locked in a certain frequency, use of FM radio stations can be eavesdrop on conversations.

2G

Second-generation mobile phone (2G) is the most common mobile phone. Often, these phones use the PHS, GSM or CDMA standards for these very mature, with a stable call quality and the right of standby time. In the second generation in order to meet the needs of data communications, a number of intermediate standards are supported on mobile phones, such as support for the GPRS MMS WAP and Internet business services, as well as a variety of Java programs.

3G

3G, is in English 3rdGeneration acronym refers to third generation mobile communication technology. Relative first-generation analogue phones (1G) and second-generation GSM, CDMA and other digital phones (2G), third-generation mobile phones generally speaking, refers to wireless communications and the Internet and other multimedia communications with a new generation of mobile communications systems. It can handle images, music, video streaming and other forms of media services including web browsing, conference calls, e-commerce and other information services. In order to provide this service, wireless network must be able to support different data transfer rate, ie indoor, outdoor, and driving environment to each support at least 2Mbps (megabytes / second), 384kbps (kilobytes / per seconds), and the transmission speed of 144kbps.

3G Mobile

Relative first-generation analogue phones (1G) and second-generation GSM, TDMA and other digital mobile phones (2G), 3G communication the name of the variety, the ITU defined as “IMT-2000″ (International Mobile Telephone 2000) standards, European Telecommunications giants claimed it as “UMTS” Universal Mobile Telecommunications System.

At present, the international 3G mobile phone (3G handsets) there are three kinds of format standards: Europe’s WCDMA standard, the United States, CDMA2000 standards and by our scientists to the TD-SCDMA standard.

Now “3G communication” is about to become the lips of the mantra of the so-called 3G, in fact its called the 3rd Generation, in Chinese meaning refers to the third generation of digital communications. In 1995 came the first generation digital mobile phones can only make voice calls; while 1996 and 1997 there will be a second generation digital mobile phone to receive data added features, such as receiving e-mail or web pages; the third generation of the main difference with the previous two generations of is the voice and data transmission speed of the upgrade, it can handle images, music, video streaming and other forms of media services including web browsing, conference calls, e-commerce and other information services. Relative first-generation analogue phones (1G) and second-generation GSM, TDMA and other digital mobile phones (2G), 3G communication the name of the variety, the ITU defined as “IMT-2000″ (International Mobile Telephone 2000) standards, European Telecommunications giants claimed it as “UMTS” Universal Mobile Telecommunications System. The standard provides mobile terminals in order to speed the move of its data transmission rate of 144kbps, outdoor static or walking rate 384kbps, while the indoor 2Mbps. However, these requirements does not mean that users can rate can reach 2Mbps, because the house building rate will depend on the detailed frequency planning, as well as organizations and carriers in close collaboration with the degree.

Future Mobile

Future mobile phones will be emphasis on security and data communications. On the one hand to strengthen the protection of personal privacy, on the other data services to enhance the research and development, more multimedia features were introduced in, phone will have a more powerful computing capabilities, a personal information terminals, not just with calls and text messages functions.

Phone will be more intelligent, miniaturized, safety-oriented, multi-functionality.

At present mobile phone

Currently the most widely used worldwide mobile phone is a GSM phone and CDMA mobile phones. In mainland China and Taiwan to GSM is most common, CDMA and PHS (PHS) mobile phone is also very popular, these are the so-called second-generation mobile phone (2G), they are digital formats, in addition to voice communications, it also you can send and receive SMS (short messaging, SMS), MMS (Technical) | MMS (MMS, MMS), wireless application protocol (WAP), etc.

Categories: mobile
Tags: , , , ,