Non-orthogonal multiple-access and multi-finger beamforming

Patent metadata

Field	Value
Publication number	US-11528066-B2
Application number	US-201817040474-A
Country	US
Kind code	B2
Filing date	Jul 12, 2018
Priority date	Jul 12, 2018
Publication date	Dec 13, 2022
Grant date	Dec 13, 2022

Abstract

Methods, apparatus, and computer-readable media are described to use multi-finger beamforming for multimeter wave communications. A base station associates with first and second user equipment. Weight sum rates are determined for the user equipment. Transmissions are scheduled to the user equipment based on the weight sum rates. Data is encoded for the first user equipment and transmitted based on the schedule. Data is encoded for the second user equipment and transmitted based on the schedule. The transmissions are multiplexed in the power domain.

First claim

The invention claimed is:

1. An apparatus of a base station (BS), the apparatus comprising:
memory; and
processing circuitry, the processing circuitry coupled to the memory and configured to:
associate with a first user equipment (UE) and a second, different UE;
determine a first instantaneous rate for the first UE based on beamformed channel gain between the BS and the first UE;
determine a second instantaneous rate for the second UE based on beamformed channel gain between the BS and the second UE;
determine weighted sum rates for the first UE and the second UE, based on the first instantaneous rate for the first UE and the second instantaneous rate for the second UE;
schedule transmissions to the first UE during a first scheduling interval and the second UE during a second scheduling interval based on the weighted sum rates, wherein the weighted sum rates are stored in the memory and the first scheduling interval is different from the second scheduling interval;
encode first data for transmission to the first UE, wherein the first data is transmitted based on the scheduled transmission to the first UE; and
encode second data for transmission to the second UE, wherein the second data is transmitted based on the scheduled transmission to the second UE.

2. The apparatus of claim 1 , wherein to schedule transmissions the processing circuitry determines the transmissions will use single directional beamforming and non-orthogonal multiple access.

3. The apparatus of claim 2 , wherein the transmissions are encoded to be multiplexed in a power domain.

4. The apparatus of claim 1 , wherein the processing circuitry is further configured to:
determine a first direction of a first beam to transmit the first data to the first UE; and
determine a second direction of a second beam to transmit the second data to the second UE.

5. The apparatus of claim 4 , wherein the first direction is equal to the second direction.

6. The apparatus of claim 4 , wherein the first direction is different from the second direction.

7. The apparatus of claim 4 , wherein the processing circuitry is further configured to:
determine a first beam gain for the first beam; and
determine a second beam gain for the second beam.

8. The apparatus of claim 1 , wherein the processing circuitry is further configured to:
determine the first instantaneous rate and the second instantaneous rate for further based on a power sharing parameter, the power sharing parameter indicating a fraction of transmit power of the BS allocated to the first UE.

9. The apparatus of claim 1 , wherein the processing circuitry is further configured to:
determine the weighted sum rates for the first UE and the second UE using at least one weight value configured according to instantaneous feedback from the first UE and the second UE at time t, the instantaneous feedback indicating the average rate of the first UE and the second UE at time (t−1).

10. A non-transitory computer-readable storage medium that stores instructions for execution by one or more processors of a base station (BS), the instructions to cause the BS to perform operations comprising:
associating with a first user equipment (UE) and a second, different UE;
determining a first instantaneous rate for the first UE based on beamformed channel gain between the BS and the first UE;
determining a second instantaneous rate for the second UE based on beamformed channel gain between the BS and the second UE;
determining weighted sum rates for the first UE and the second UE, based on the first instantaneous rate for the first UE and the second instantaneous rate for the second UE;
scheduling transmissions to the first UE during a first scheduling interval and the second UE during a second scheduling interval based on the weighted sum rates, wherein the weighted sum rates are stored in the memory and the first scheduling interval is different from the second scheduling interval;
encoding first data for transmission to the first UE, wherein the first data is transmitted based on the scheduled transmission to the first UE; and
encoding second data for transmission to the second UE, wherein the second data is transmitted based on the scheduled transmission to the second UE.

11. The non-transitory computer-readable storage medium of claim 10 , wherein the operations for scheduling the transmissions comprise:
determining the transmissions will use single directional beamforming and non-orthogonal multiple access.

12. The non-transitory computer-readable storage medium of claim 11 , wherein the transmissions are encoded to be multiplexed in a power domain.

13. The non-transitory computer-readable storage medium of claim 10 , the operations further comprising:
determining a first direction of a first beam to transmit the first data to the first UE; and
determining a second direction of a second beam to transmit the second data to the second UE.

14. The non-transitory computer-readable storage medium of claim 13 , wherein the first direction is equal to the second direction.

15. The non-transitory computer-readable storage medium of claim 13 , wherein the first direction is different from the second direction.

16. The non-transitory computer-readable storage medium of claim 13 , the operations further comprising:
determining a first beam gain for the first beam; and
determining a second beam gain for the second beam.

17. The non-transitory computer-readable storage medium of claim 10 , the operations further comprising:
determining the first instantaneous rate and the second instantaneous rate for further based on a power sharing parameter, the power sharing parameter indicating a fraction of transmit power of the BS allocated to the first UE.

18. The non-transitory computer-readable storage medium of claim 10 , the operations further comprising:
determining the weighted sum rates for the first UE and the second UE using at least one weight value configured according to instantaneous feedback from the first UE and the second UE at time t, the instantaneous feedback indicating the average rate of the first UE and the second UE at time (t−1).

Assignees

• Intel Corp

Inventors

• Orhan Oner
• Aryafar Ehsan
• Carlton Brent
• Himayat Nageen
• Hull Christopher
• Naderializadeh Navid
• Nikopour Hosein
• Pellerano Stefano
• Rahman Mustafijur
• Talwar Shilpa
• Zhu Jing

Classifications

• H04W72/566

  of the information or information source or recipient · CPC title

• H04B7/0617 Primary

  for beam forming · CPC title

• H04W88/12

  Access point controller devices · CPC title

• H04B7/0456

  Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting · CPC title

• H04B7/024 Primary

  Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems · CPC title