GPRS = General Packet Radio Service. It is an additional service by GSM network to enhance the speed of data access from maximum rate 9,6 kbps into maximum 56 kbps. It means if the TRX is standalone, then the speed may reach 56kbps. However, when other users are online then the speed will be automatically divided into each of user. The more users online, the less bandwidth allolcation will be accepted. GPRS sometimes called as 2,5G technology.
EDGE = Enhanced Data rates for GSM Evolution. This technology is an advanced version of GPRS. In EDGE technology, the maximum speed increase into 236 kbps. This condition may be reached once there is only one user online that using one TRX BTS.EDGE sometimes called as 2,75G technology.
UMTS = Universal Mobile Tele Services. It is a standard name for telecommunication service. It is because UMTS promising a standard mobile telecommunication service (voice and sms (Short Messaging Service)) and also an advanced data bearer in the view of its speed, protocol and connection. UMTS requires data bearer speed 144 kbps (satellite and remote rural), 384 kbps in residential and 2 Mbps indoor and closed rural.
3G = Third Generation. It is an implementation of UMTS in the field. It promises the speed as big as 384 kbps with maximum downlink and 64 kbps uplink whereas a standard mobile telecommunication services such as voice and sms are running.
HSDPA = High Speed Downlink Packet Access. The first phase HSDPA stands with capacity 4,1 Mbps. Then coming up a second phase with capacity 11 Mbps and maximum capacity stand for downlink peak data rate up to 14 Mbit/s.However, this high rate can only occur if the signal coverage is shorter than a normal GSM coverage. HSDPA also called as 3,5G technology.
HSUPA = High Speed Uplink Packet Access. It is just like HSDPA, but with a higher uplink stream. It has uplink capability up to 5,76 Mbps. Several systems need HSUPA, such as network server in central office that serves many branches to other places via wireless, then the most suitable connection will be HSUPA for the it allows the existence of standalone transmit mode.
Source: Ferdy Hernawan



