Abstract
Efficient dynamic channel allocation (DCA) algorithms are needed to take full advantage of flexibility and dynamic nature of TDD operation. DCA algorithms can be divided in two parts where slow DCA allocates resources to cells and fast DCA to bearer services. This paper discusses uplink dynamic channel allocation in UTRA TDD with slow reallocation. The TDD operation has traditionally exploited the possibility of DCA functions to avoid or minimise the interference and improve the system capacity. For UTRA TDD the promise of advanced receivers alleviates the intra cell interference, but this emphasises the importance of minimising the interference between different cells. There are several methods that can be used to aid the channel allocation process, but they all have inherent limitations. A model for analysis of protocol and measurement errors impact is proposed. These studies are based on dynamic system simulations that are carried out to find out how the different elements in the DCA process impact the UL system capacity. Effect of random and interference based channel allocation with and without slow DCA information is studied in presence of signalling delays and measurement errors.
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