This link has been bookmarked by 44 people . It was first bookmarked on 25 Oct 2006, by Rich Hintz.
-
01 Jun 15
-
A new generation of cellular standards has appeared approximately every tenth year since 1G systems were introduced in 1981/1982. Each generation is characterized by new frequency bands, higher data rates and non–backward-compatible transmission technology. The first 3G networks were introduced in 1998 and fourth generation "4G" networks in 2008.
-
3G, short form of third generation, is the third generation of mobile telecommunications technology.[1]
-
3G telecommunication networks support services that provide an information transfer rate of at least 200 kbit/s. Later 3G releases, often denoted 3.5G and 3.75G, also provide mobile broadband access of several Mbit/s to smartphones and mobile modems in laptop computers
-
3G technology is the result of research and development work carried out by the International Telecommunication Union (ITU) in the early 1980s. 3G specifications and standards were developed in fifteen years. The technical specifications were made available to the public under the name IMT-2000. The communication spectrum between 400 MHz to 3 GHz was allocated for 3G.
-
3G networks offer greater security than their 2G predecessors
-
The bandwidth and location information available to 3G devices gives rise to applications not previously available to mobile phone users. Some of the applications are:
-
-
23 Jul 14
-
14 Nov 13
-
-
29 Sep 13
-
-
transfer rate of at least 200 kbit/s
-
transfer rate of at least 200 kbit/s.
-
56 Mbit/s in the downlin
-
22 Mbit/s in the uplink.
-
sharing infrastructure with the IS-95 2G standard
-
Each generation is
-
characterized by new frequency bands
-
higher data rates
-
3GPP Long Term Evolution (LTE)
-
peaks of 1 Mbit/s downstream and 400 kbit/s upstream
-
hardware
-
encoding methods
-
evolutionary standards
-
reliability
-
required the replacement of most broadcast towers.
-
-
10 Aug 12
-
3G stands for 3rd Generation. It is a term used to represent the 3rd generation of mobile telecommunications technology. This is a set of standards used for mobile devices and mobile telecommunication services and networks that comply with the International Mobile Telecommunications-2000 (IMT-2000)
-
ervices advertised as 3G are required to meet IMT-2000 technical standards, including standards for reliability and speed (data transfer rates). To meet the IMT-2000 standards, a system is required to provide peak data rates of at least 200 kbit/s (about 0.2 Mbit/s). However, many services advertised as 3G provide higher speed than the minimum technical requirements for a 3G service.
-
A new generation of cellular standards has appeared approximately every tenth year since 1G systems were introduced in 1981/1982. Each generation is characterized by new frequency bands, higher data rates and non backwards compatible transmission technolog
-
Overview of 3G/IMT-2000 standards[5
-
3G networks offer greater security than their 2G predecessors
-
-
18 Jul 12
-
29 Sep 11
-
23 Aug 11
-
07 Jul 11
-
mophone
-
-
02 Jun 11
-
21 Apr 11
-
17 Mar 11
-
International Mobile Telecommunications–2000 (IMT-2000) standards are a generation of specifications for data transmission set by the Radio section of the International Telecommunication Union.[1] The IMT-2000 provided these standards for the development of today's 3rd Generation radio telecommunication networks, attempting to improve upon the capability of earlier 1G and 2G wireless networks, which did not have standardised requirements
-
The IMT-2000 standards were used to draw up several network standards to improve upon existing 2G standards,
-
3G networks are expected to provide wireless telecommunications to mobile devices over a wide area, such as mobile phones.
-
To meet the IMT-2000 standards, a system is required to provide peak data rates of at least 200 kbit/s.
-
Recent 3G releases, often denoted 3.5G and 3.75G (especially soover the HSPA subfamily and EVDO Rev. B format), also provide mobile broadband access of several Mbit/s to laptop computers and smartphones.
-
-
-
20 Oct 10
-
-
30 Sep 10
-
25 Apr 10
-
EDGE phones are typically not branded 3G. Services include wide-area wireless voice telephone, video calls, and wireless data, all in a mobile environment. Compared to 2G and 2.5G services, 3G allows simultaneous use of speech and data services and higher data rates (at least 200 kbit/s peak bit rate
-
wide-area wireless voice telephone, video calls, and wireless data, all in a mobile environment.
-
2007 the 200 millionth 3G subscriber had been connected. Out of 3 billion mobile phone subscriptions worldwide this is only 6.7%.
-
minimum data rate of 2 Mbit/s for stationary or walking users, and 384 kbit/s in a moving vehicle,"[15]
-
3G networks offer greater security than their 2G predecessor
-
- Mobile TV – a provider redirects a TV channel directly to the subscriber's phone where it can be watched.
- Video on demand – a provider sends a movie to the subscriber's phone.
- Video conferencing – subscribers can see as well as talk to each other.
- Tele-medicine – a medical provider monitors or provides advice to the potentially isolated subscriber.
- Location-based services – a provider sends localized weather or traffic conditions to the phone, or the phone allows the subscriber to find nearby businesses or friends.
-
-
01 Mar 10
-
05 Dec 09
-
07 Apr 09
-
20 Sep 08
-
05 Sep 08
-
07 Jul 08
-
23 Feb 08
-
09 Oct 07
-
09 Jan 07
-
25 Oct 06
-
13 Nov 05
Would you like to comment?
Join Diigo for a free account, or sign in if you are already a member.