Title :
Time Slot Allocation Schemes for Multihop TDD-CDMA Cellular System
Author :
Yang, Ming ; Chong, Peter H J
Author_Institution :
Network Technol. Res. Centre, Nanyang Technol. Univ.
Abstract :
In UMTS terrestrial radio access (UTRA) standard, each frame consists of 15 TSs for TDD-CDMA system. Any MS can be allocated to any TS for either uplink or downlink transmission. The time slot allocation scheme within these 15 TSs gives the system the freedom of adapting the channel environment. In this paper, we propose and study multihop dynamic time slot allocation schemes, namely dynamic switching point with multihop (DSPM) and maximum interference first (MIF), for TDD-CDMA system. Compared to slot allocation schemes without multihop technique, it is shown that our proposed schemes can improve both the data rate for single user and the overall throughput for the whole system. In addition, we also study the distribution of data transmission speed to demonstrate the effectiveness of each slot allocation scheme clearly.
Keywords :
cellular radio; channel allocation; code division multiple access; time division multiple access; time division multiplexing; data transmission speed; dynamic switching point with multihop; maximum interference first; multihop TDD-CDMA cellular system; multihop dynamic time slot allocation schemes; 3G mobile communication; Application specific processors; Cellular networks; Communications Society; Downlink; Interference; Resource management; Spread spectrum communication; Switches; Telecommunication traffic;
Conference_Titel :
Wireless Communications and Networking Conference, 2007.WCNC 2007. IEEE
Conference_Location :
Kowloon
Print_ISBN :
1-4244-0658-7
Electronic_ISBN :
1525-3511
DOI :
10.1109/WCNC.2007.573
