Title :
A dynamic channel assignment algorithm for asymmetric traffic in voice/data integrated TDMA/TDD mobile radio
Author :
Chen, Lan ; Yoshida, Susumu ; Murata, Hidekazu ; Hirose, Shouichi
Author_Institution :
Dept. of Electron. & Commun., Kyoto Univ., Japan
Abstract :
Personal communications systems are increasingly required to accommodate not only voice traffic, but also various types of data traffic. Generally speaking, voice traffic is symmetric between the uplink and downlink, while data traffic can be highly asymmetric. It is therefore inefficient to accommodate data in a conventional TDMA/TDD system with a fixed TDD boundary. In this paper, focusing on continuous data traffic which requires multi-slots in a circuit based TDMA/TDD system, we propose an algorithm in which the TDD boundaries are moved adaptively to accommodate data traffic efficiently. Compared with the conventional fixed boundary algorithm, computer simulations confirm that the proposed algorithm has a superior performance in the excessive transmission delay of data while maintaining the performance of voice. Moreover, an almost similar performance improvement of the proposed algorithm is confirmed for two different average message sizes of data calls
Keywords :
adaptive systems; data communication; delays; frequency allocation; land mobile radio; personal communication networks; telecommunication traffic; time division multiple access; voice communication; TDMA/TDD mobile radio; adaptive boundary movement; asymmetric traffic; average message size; circuit based TDMA/TDD system; computer simulations; data calls; data traffic; downlink; dynamic channel assignment algorithm; fixed boundary algorithm; performance; personal communications systems; transmission delay; uplink; voice traffic; voice/data integration; Base stations; Bit rate; Data communication; Delay; Downlink; Heuristic algorithms; Mobile computing; Time division multiple access; Timing; Traffic control;
Conference_Titel :
Information, Communications and Signal Processing, 1997. ICICS., Proceedings of 1997 International Conference on
Print_ISBN :
0-7803-3676-3
DOI :
10.1109/ICICS.1997.647090
