Long-term-csi-aided mu-mimo scheduling method, base station and user equipment
AssigneeAlcatel Lucent
InventorsKeying Wu, Lei Wang
Life of this patent
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Abstract
The present invention proposes a multiuser multi-input multi-output scheduling method, which comprises steps of: a multiuser scheduling step of performing multiuser scheduling by using mean channel matrixes of respective user equipments; and a multiuser precoding step of performing multiuser precoding by using instantaneous channel matrixes of respective user equipments selected in the multiuser scheduling. The present invention also proposes a base station and a user equipment which will be used to implement the inventive multiuser multi-input multi-output scheduling method.
Claims18
A multiuser multi-input multi-output scheduling method, comprising steps of:
- a multiuser scheduling step of performing multiuser scheduling by using mean channel matrixes of respective user equipments;
- and
- a multiuser precoding step of performing multiuser precoding by using instantaneous channel matrixes of respective user equipments selected in the multiuser scheduling.
(canceled)
A base station, comprising:
- a sending unit for sending a message to inform user equipments to feed back their mean channel matrixes and/or instantaneous channel matrixes;
- a receiving unit for receiving the mean channel matrixes and the instantaneous channel matrixes fed back from user equipments;
- a multiuser scheduling unit for performing multiuser scheduling by using the mean channel matrixes of the respective user equipments;
- and
- a multiuser precoding unit for performing multiuser precoding by using the instantaneous channel matrixes of respective user equipments selected by the multiuser scheduling unit.
(canceled)
A user equipment, comprising:
- a receiving unit for receiving a message requesting to feed back instantaneous channel matrix and/or mean channel matrix from a base station;
- an instantaneous channel matrix measuring unit for measuring its instantaneous channel matrix every first time interval TI;
- a mean channel matrix calculating unit for calculating its mean channel matrix every second time interval TL by using the instantaneous channel matrixes measured by the instantaneous channel matrix measuring unit during the immediate second time interval TL, and
- a sending unit for sending the measured instantaneous channel matrix and/or the calculated mean channel matrix to the base station,
- wherein the first time interval TI is smaller than the second time interval TL.
(canceled)
Dependencies are inferred from the claim text.