H+ vs 3G?

[Kridal]

Skiftet til Tele2, og de har som kjent ikke 4G enda. Men på mobilen skifter det å stå H, H+ og 3G.

 

Hva er forskjellen på disse?

[AllFather]

HSPDA+

 

HSPA+ provides an evolution of High Speed Packet Access and provides data rates up to 168 Megabits per second (Mbit/s) to the mobile device (downlink) and 22 Mbit/s from the mobile device (uplink). Technically these are achieved through the use of a multiple-antenna technique known as MIMO (for "multiple-input and multiple-output") and higher order modulation (64QAM) or combining multiple cells into one with a technique known as Dual-Cell HSDPA.

The 168 Mbit/s and 22 Mbit/s represent theoretical peak speeds. The actual speed for a user will be lower. In general, HSPA+ offer higher bitrates only in very good radio conditions (very close to cell tower) or if the terminal and network both support either MIMOor Dual-Cell HSDPA, which effectively use two parallel transmit channels with different technical implementations.

The higher 168 Mbps speeds are achieved by using multiple carriers with Dual-Cell HSDPA and 4-way MIMO together simultaneously.^[1][2]

The technology also delivers significant battery life improvements and dramatically quicker wake-from-idle time – delivering a true always-on connection. HSPA+ should not be confused with LTE, which uses a new air interface based on OFDMA technology. HSPA+ is an evolution of HSPA that upgrades the existing 3G network and provides a method for telecom operators to migrate towards 4G speeds without deploying a new radio interface. ^[3]