Channel
Channel : An individual UMTS radio channel is defined in the IMT 2000 standard as having a bandwidth of 5 MHz. This means that an individual UMTS radio channel, for example, ranges from 1900 to 1905 MHz. How many radio channels a UMTS provider can make available to customers depends on which frequency spectrum has been won in the auctioning of UMTS mobile phone frequencies. Each radio channel can transport more than one connection. So that more than one subscriber can use the same channel, multiple access methods such as W-CDMA (FDD), TD-CDMA (TDD) or cdma2000 are used for 3G networks. It nevertheless depends on the service profile of the connection how many connections per channel can be managed at the same time. It is also true that in the planning of the radio network, the effect of cellular respiration for CDMA should be considered.
