Adaptive scheduling of voice traffic in a multi-carrier communication environment

摘要

The present invention provides a technique for scheduling data, and in particular, scheduling real-time or voice data for transmissions during a transmit time interval in a multi-carrier communication environment. For each transmit time interval, channel condition indicia for multiple users is determined, and an iterative scheduling process is then implemented based in part on the channel condition indicia. The iterative scheduling initially pre-assigns select tones for each of the remaining users that have not been permanently assigned tones for the given transmit time interval. Next, the remaining user having the least favorable channel conditions is selected as an active user. The newly selected active user is then permanently assigned the select tones that were initially pre-assigned to that particular user. The permanently assigned tones are removed from consideration, and the process is repeated until all the remaining users are permanently assigned unique tones for scheduling.

主权项

1. A method of scheduling data for transmission during a transmit time interval in a multi-carrier communication environment, the method comprising:
obtaining channel condition information associated with a plurality of users, comprising obtaining respective channel condition information for each respective user of the plurality of users, wherein the channel condition information comprises a channel quality indicator corresponding to channel conditions; selecting tones from a plurality of tones according to the channel condition information, wherein the selected tones are associated with channel conditions deemed most favorable for tone assignment to the plurality of users; and iteratively assigning, for each transmit time interval of a succession of transmit time intervals, a different respective tone of the selected tones to each respective user, one respective user after another, in a prioritized order determined by the channel condition information.