Title :
File transmission over wireless fast fading downlink
Author :
Tsybakov, Boris S.
Author_Institution :
QUALCOMM Inc., San Diego, CA, USA
fDate :
8/1/2002 12:00:00 AM
Abstract :
The third-generation code division multiple access (3G CDMA) mobile communication networks are designed to transmit voice and data over wireless channels. Fundamental problems need to be solved for such mobile communication networks to operate efficiently. One of the problems is finding optimal scheduling algorithms for file transmission over the fading downlink channel from a base station to mobile users. Here, the problem is solved in the case of transmission of a given number of files. Optimal algorithms that minimize the delay and the transmission time are found. Also, specific nonoptimal algorithms are considered and compared numerically with the optimal ones. We consider a slotted downlink with channels to the mobile users that are dependent in the same slot but independent for different slots. Additionally, some generalizations are presented.
Keywords :
cellular radio; code division multiple access; data communication; delays; dynamic programming; fading channels; multiuser channels; radio links; voice communication; 3G CDMA networks; base station; code division multiple access; data communication; delay; dynamic time-sharing algorithm; fading downlink channel; file transmission; nonoptimal algorithms; optimal dynamic programming algorithms; optimal scheduling algorithms; slotted downlink; third-generation mobile communication networks; transmission time; voice communication; wireless channels; wireless fast fading downlink; 3G mobile communication; Base stations; Delay effects; Downlink; Fading; Helium; Job shop scheduling; Multiaccess communication; Optimal scheduling; Scheduling algorithm;
Journal_Title :
Information Theory, IEEE Transactions on
DOI :
10.1109/TIT.2002.800501
