Method for dynamic resource allocation of uplink and...

Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...

Reexamination Certificate

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C370S310000, C370S328000, C370S330000, C455S450000, C455S452100, C455S453000

Reexamination Certificate

active

08064392

ABSTRACT:
Provided is a method for dynamic resource allocation of uplink and downlink in an OFDMA/TDD cellular system. The method for dynamic resource allocation of uplink in an OFDMA/TDD cellular system includes the steps of determining the number of sub-channels which can be allocated to each user through an FLR algorithm; performing channel allocation for a first frame through a round-robin algorithm in which channel information is not needed; performing dynamic channel allocation for a next frame through uplink channel information measured by uplink channel sounding; and performing power control. The method for dynamic resource allocation of downlink in an OFDMA/TDD cellular system includes the steps of selecting a user through a GPF algorithm; performing dynamic channel allocation through an ASA algorithm so as to perform a FASA algorithm for obtaining a multiuser diversity gain; and performing dynamic power allocation through an improved CHC algorithm, in consideration of a data rate provided to each user and a channel state.

REFERENCES:
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Kivanc et al, Computationally Efficient Bandwidth Allocation and Power Control for OFDMA, Nov. 2003, IEEE Transactions On Wireless Communications, vol. 2, No. 6.
Ko et al, Capacity Optimization of 802.163 OFDMA/TDD Cellular System using the Joint Allocation of Sub-channel and Transmit Power, Feb. 2007, Advanced Communication Technology.

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