Hi. Can someone tell me which if these is best going to worst: HSPA+, HUPA, Edge, GPRS/3G and 3G? Would that be the order? And will 4G be better than the best of that bunch?
Brief explanation needed of mobile net technologies
Originally Posted by pfgpowell:
“Hi. Can someone tell me which if these is best going to worst: HSPA+, HUPA, Edge, GPRS/3G and 3G? Would that be the order? And will 4G be better than the best of that bunch?”
“Hi. Can someone tell me which if these is best going to worst: HSPA+, HUPA, Edge, GPRS/3G and 3G? Would that be the order? And will 4G be better than the best of that bunch?”
GPRS and Edge are 2G. Edge is slightly faster. UMTS is bog standard 3G and is still quite slow. Not many UMTS masts only now. HSPDA is upto 7.2mb/s HSUPA is upload of about 5.2mb/s I think. HSPA+ Can go upto 21mb/s and DC-HSPA+ can go upto 42mb/s. They are all 3G but you need a phone that can support HSPA+ and DC-HSPA+ to access those speeds. 4G is LTE and is pretty much only rolled out in the USA right now. The auction for the networks to be able to use it will be this year.
In simple terms...
1. 4G (actually not but marketed as 4G, should just call it LTE 3.9G)
2. HSPA+ (3.75G)
3. HSPA (3.5G)
3. 3G
4. Edge (2.75G)
5. 2G (2.5G also known as GPRS)
4G is quite complicated as companies are branding their products to be 4G when they actually not. The IMT (International Mobile Telecommunications) has defined 4G as having 100 Mbit/s for high mobility communication (such as from trains and cars) and 1 Gbit/s for low mobility communication. Also 4G system does not support traditional circuit-switched telephony service, but all-internet protocol (IP) based communication such as IP-telephony.
In simple terms, HSPA+ can never be classed as 4G because it is based on circuit-switched technology. Even LTE, which is marketed as 4G cannot be classed as 4G as it cannot hit 1Gbps in static location, (theoretical LTE speeds can hit 100Mbps).
HSPA+ specification should be able to hit 672Mbps Downstream
Source: https://en.wikipedia.org/wiki/4G
1. 4G (actually not but marketed as 4G, should just call it LTE 3.9G)
2. HSPA+ (3.75G)
3. HSPA (3.5G)
3. 3G
4. Edge (2.75G)
5. 2G (2.5G also known as GPRS)
4G is quite complicated as companies are branding their products to be 4G when they actually not. The IMT (International Mobile Telecommunications) has defined 4G as having 100 Mbit/s for high mobility communication (such as from trains and cars) and 1 Gbit/s for low mobility communication. Also 4G system does not support traditional circuit-switched telephony service, but all-internet protocol (IP) based communication such as IP-telephony.
In simple terms, HSPA+ can never be classed as 4G because it is based on circuit-switched technology. Even LTE, which is marketed as 4G cannot be classed as 4G as it cannot hit 1Gbps in static location, (theoretical LTE speeds can hit 100Mbps).
HSPA+ specification should be able to hit 672Mbps Downstream
Source: https://en.wikipedia.org/wiki/4G
- 4G LTE is the fastest (Not in the UK yet) Has "theoretical" max speeds of up to 100mbps. It's more like 3.9G but known as 4G.
- HSPA+ DC is dual carrier HSPA+ (Coming to the UK later this year) Has "theoretical" max of 42mbps. Some carriers advertise this as 4G but its really 3.75G. (Most phones show it as H+).
- HSPA+ Currently used on all UK networks (Mostly 3 and EverythingEverywhere), Max speed of 21mbps and again known as 3.75G. (Again shown as H+)
- HSDPA & HSUPA (Shown as H on most phones), max speeds of either 7.2mbps or 14.4mbps. Known as 3.5G.
- UMTS (also known as standard 3G) has a max speed of 356kbps. (Most phones show as 3G)
- EDGE is not very widely used but is 2.5G and has a max speed of around 230kbps. (Most phones show as E)
- GPRS is the slowest and is 2G, has a max speed of 60kbps, most phones show it as a G or a globe symbol.
- GSM is no longer used but was the act of dialling a number to get online, could only show very basic text. It's not 1G as it's still digital so you could say GSM is 2G, GPRS is 2.5G and EDGE is 2.75G.
Hope this helps give you a better understanding of mobile data standards!
- HSPA+ DC is dual carrier HSPA+ (Coming to the UK later this year) Has "theoretical" max of 42mbps. Some carriers advertise this as 4G but its really 3.75G. (Most phones show it as H+).
- HSPA+ Currently used on all UK networks (Mostly 3 and EverythingEverywhere), Max speed of 21mbps and again known as 3.75G. (Again shown as H+)
- HSDPA & HSUPA (Shown as H on most phones), max speeds of either 7.2mbps or 14.4mbps. Known as 3.5G.
- UMTS (also known as standard 3G) has a max speed of 356kbps. (Most phones show as 3G)
- EDGE is not very widely used but is 2.5G and has a max speed of around 230kbps. (Most phones show as E)
- GPRS is the slowest and is 2G, has a max speed of 60kbps, most phones show it as a G or a globe symbol.
- GSM is no longer used but was the act of dialling a number to get online, could only show very basic text. It's not 1G as it's still digital so you could say GSM is 2G, GPRS is 2.5G and EDGE is 2.75G.
Hope this helps give you a better understanding of mobile data standards!
faster systems became available as spectral efficiency got better. going faster earlier would have been huge waste of radio spectrum.
http://en.wikipedia.org/wiki/Spectral_efficiency
GSM was and is mobile phone system. Data capacity limited. what’s sent is not digitised voice, but vocoder data.
gprs was 1st internet over gsm, designed for wap phone browsers. vocoder data is repaced by tcp/ip packets.
edge kept gsm protocols, but used 8 psk modulation, giving 3 times capacity. unlike phone calls, occasional dropout ok, since tcp/ip windowing is used for data.
3g proper dropped previous gsm protocols, all data no vocoder, allowing frequency hopping & multi channel use, again under tcp/ip, much better spectral eficiency.
4g is just extended 3g using more radio spectrum.
http://en.wikipedia.org/wiki/Spectral_efficiency
GSM was and is mobile phone system. Data capacity limited. what’s sent is not digitised voice, but vocoder data.
gprs was 1st internet over gsm, designed for wap phone browsers. vocoder data is repaced by tcp/ip packets.
edge kept gsm protocols, but used 8 psk modulation, giving 3 times capacity. unlike phone calls, occasional dropout ok, since tcp/ip windowing is used for data.
3g proper dropped previous gsm protocols, all data no vocoder, allowing frequency hopping & multi channel use, again under tcp/ip, much better spectral eficiency.
4g is just extended 3g using more radio spectrum.
