| 摘要 |
Even with techniques increasing a basic transmission rate, i.e. a modulation method of the EDGE and usage of several basic traffic channels to form a high-speed traffic channel, the theoretical maximum data rate of a logical link, and thus of a radio bearer, is 473,8 kbits/s. That is, however, not sufficient for satisfying new requirements of up to 2 Mbits/s. The new requirements, and even higher data rates, can be achieved by having several simultaneous single carrier logical links (TBFs), and thus logical channels, for one radio bearer between a mobile station and a network. The number of supported carriers, and preferably also the maximum multicarrier allocation bandwidth, is indicated in a multicarrier class of a mobile station.
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