Title :
A novel dynamic channel allocation scheme to support asymmetrical services in TDD-CDMA systems
Author :
Peng, Mugen ; Zhang, Jinwen ; Zhu, Xiaoming ; Wang, Wenbo
Author_Institution :
Center for Wireless Commun., Beijing Univ. of Posts & Telecommun., China
Abstract :
In TDD-CDMA system, the different asymmetrical requirements between uplink (UL) and downlink (DL) in the different base station (BS) and different time, for example, different switch point between UL and DL in TDD-SCDMA system according to asymmetrical traffics, will generate the serious inter-cell interference. From the interference point of view, dynamic channel allocation (DCA) is treated as mandatory on TDD-CDMA systems. In this paper, a novel and advanced DCA algorithm (pathloss assistance-BS noninterference least DCA, PA-BNL DCA) is presented, which is based on radio resource reserving related to pathloss assistance and BS-BS interference resolving mechanisms. Simulation results show the novel DCA can work better than least DCA schemes (least interference for UL and least transmission power for DL) in asymmetrical traffic.
Keywords :
cellular radio; channel allocation; code division multiple access; radio links; radiofrequency interference; telecommunication services; telecommunication traffic; time division multiplexing; PA-BNL DCA; TDD-CDMA systems; admission control model; asymmetrical services; asymmetrical traffic; base station; code division multiple access; downlink; dynamic channel allocation scheme; intercell interference; pathloss assistance-BS noninterference least DCA; radio resource reserving; time division duplexing; uplink; Bandwidth; Base stations; Channel allocation; Degradation; Downlink; Frequency synchronization; Interference; Multiaccess communication; Switches; Time division synchronous code division multiple access;
Conference_Titel :
Communication Technology Proceedings, 2003. ICCT 2003. International Conference on
Print_ISBN :
7-5635-0686-1
DOI :
10.1109/ICCT.2003.1209654
