System and method of scheduling radio resources in a...

Details System and method of scheduling radio resources in a... System and method of scheduling radio resources in a...

2005-07-19

2005-07-19

Nguyen, Steven (Department: 2665)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S341000, C370S412000, C370S420000, C370S428000, C370S431000, C455S450000

Reexamination Certificate

active

06920120

ABSTRACT:
A system and method of scheduling radio resources in a packet-switched wireless communications network. A plurality of data packets from a plurality of users are placed in a First-In-First-Out (FIFO) queue and are sequentially selected and analyzed for transmission. If a selected packet has an instantaneous radio channel quality (C/I) greater than a historical channel quality value, the packet is transmitted. If the instantaneous C/I is not greater than the historical value, it is determined whether the selected packet has been held for longer than a threshold time period. If so, the selected packet is transmitted. If neither condition is met, the selected packet is temporarily held in its position in the queue while analyzing the next packet for transmission. If no packets qualify for transmission, the packet in the first position is transmitted. After each transmission, the analysis starts again at the head of the queue.

REFERENCES:
patent: 6016316 (2000-01-01), Moura et al.
patent: 2001/0036154 (2001-11-01), Takagi
patent: 2005/0058147 (2005-03-01), Regnier et al.
patent: 1 130 872 (2001-09-01), None
I. Lopez et al., “Downlink Radio Resource Management for IP packet services in UMTS”, IEEE Proceedings, VTC2001—Spring 2001, 5 pages.
J. M. Holtzman, “CDMA Forward Link Waterfilling Power Control”, IEEE PRoceedings, VTC—Spring 2001, 5 pages.

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