Techniques for ofdma rate adaptation
AssigneeQUALCOMM Incorporated
InventorsChao CHENG, Ning ZHANG, Youhan KIM, Chin-Hung CHEN
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Abstract
The disclosure provides for rate adaptation based on channel power tracking in wireless communications. An Access Point (AP) may measure a full-band channel quality information (CQI) for a plurality of wireless stations associated with the AP and allocate a sub-band resource unit from the plurality of sub-band resource units to a wireless station based on the full-band CQI. Aspects of the disclosure also include techniques for adjusting a data rate associated with the wireless station based on a channel power of the sub-band resource unit.
Claims30
A method for rate adaptation in wireless communications, comprising:
- measuring, at an access point (AP), full-band channel quality information (CQI) for a plurality of wireless stations associated with the AP, wherein the full-band includes a plurality of sub-band resource units;
- allocating a sub-band resource unit from the plurality of sub-band resource units to a wireless station of the plurality of wireless stations based on the full-band CQI;
- adjusting a data rate associated with the wireless station based on a channel power of the sub-band resource unit;
- and
- communicating, from the AP, the data rate to the wireless station to allow the wireless station to utilize the data rate to communicate with the AP.
An access point (AP) for wireless communications, comprising:
- a transceiver;
- a memory configured to store instructions;
- a processor communicatively coupled to the transceiver and the memory, the processor configured to execute the instructions to:
- measure, at the AP, full-band channel quality information (CQI) for a plurality of wireless stations associated with the AP, wherein the full-band includes a plurality of sub-band resource units;
- allocate a sub-band resource unit from the plurality of sub-band resource units to a wireless station of the plurality of wireless stations based on the full-band CQI;
- adjust data rate associated with the wireless station based on a channel power of the sub-band resource unit;
- and
- communicate, from the AP via the transceiver, the data rate to the wireless station to allow the wireless station to utilize the data rate to communicate with the AP.
An access point (AP) for rate adaptation in wireless communications, comprising:
- means for measuring, at the AP, full-band channel quality information (CQI) for a plurality of wireless stations associated with the AP, wherein the full-band includes a plurality of sub-band resource units;
- means for allocating a sub-band resource unit from the plurality of sub-band resource units to a wireless station of the plurality of wireless stations based on the full-band CQI;
- means for adjusting a data rate associated with the wireless station based on a channel power of the sub-band resource unit;
- and
- means for communicating, from the AP, the data rate to the wireless station to allow the wireless station to utilize the data rate to communicate with the AP.
A computer-readable medium storing computer executable code for rate adaptation in wireless communications, comprising code to:
- measure, at an access point (AP), full-band channel quality information (CQI) for a plurality of wireless stations associated with the AP, wherein the full-band includes a plurality of sub-band resource units;
- allocate a sub-band resource unit from the plurality of sub-band resource units to a wireless station of the plurality of wireless stations based on the full-band CQI;
- adjust a data rate associated with the wireless station based on a channel power of the sub-band resource unit;
- and
- communicate, from the AP, the data rate to the wireless station to allow the wireless station to utilize the data rate to communicate with the AP.
Dependencies are inferred from the claim text.