Methods and apparatus for fixed broadband communication and backhaul access with large number of antennas
A consumer premise equipment (CPE) which may comprise a processor, a storage medium, and an antenna, wherein the processor may be operatively coupled to the storage medium and the antenna to receive, from multiple antennas of a hub station, a first beam training announcement signal that may inform the CPE to be ready to receive a beam training packet using one or more beams, wherein the beam training packet may include a plurality of symbols that are each beamformed using a different beamformer or precoder; and send, to the hub station, a beamforming feedback report based on measurements taken by the CPE, possibly as a result of the CPE receiving the first beam training announcement signal.
1. A method comprising:
transmitting a first beam training announcement packet using a first beam, the first beam having a first polarization and formed in a first direction toward a first consumer premise equipment (CPE);
transmitting a second beam training announcement packet using a second beam, the second beam having a second polarization and formed in a second direction toward a second CPE;
wherein the first beam training announcement packet is sent during a first time slot by a first set of antennas, and the second beam training announcement packet is sent during the first time slot by a second set of antennas;
wherein the first direction and the second direction are not the same; and
wherein the first polarization and the second polarization are not the same.
2. The method of claim 1 , wherein the first polarization is vertical polarization.
3. The method of claim 1 , wherein the first polarization is right-handed circular polarization.
4. The method of claim 1 , further comprising:
subsequent to transmitting the first beam training announcement packet, transmitting a first beam training packet using the first beam; and
subsequent to transmitting the second beam training announcement packet, transmitting a second beam training packet using the second beam.
5. The method of claim 4 , wherein transmitting the first beam training packet and transmitting the second beam training packet occur during a second time slot.
6. The method of claim 4 , wherein the first beam training packet includes multiple training symbols.
7. The method of claim 4 , wherein the first beam training announcement packet includes an indication that the first CPE should be prepared to receive the first beam training packet, and the second beam training announcement packet includes an indication that the second CPE should be prepared to receive the second beam training packet.
8. The method of claim 7 , further comprising:
wherein the first beam training announcement packet includes an indication that a third CPE should be prepared to receive the first beam training packet, and the second beam training announcement packet includes an indication that a fourth CPE should be prepared to receive the second beam training packet.
9. The method of claim 1 , further comprising:
receiving a first beamforming feedback report from the first CPE; and
receiving a second beamforming feedback report from the second CPE.
10. The method of claim 9 , wherein the receiving of the first beamforming feedback report occurs during a third time slot, and the receiving of the second beamforming feedback report occurs during the third time slot.
11. A system comprising:
a transmitter comprising a first plurality of antennas and a second plurality of antennas different than the first plurality of antennas, the transmitter configured to
transmit a first beam training announcement packet using a first beam formed using the first plurality of antennas, the first beam having a first polarization and formed in a first direction toward a first consumer premise equipment (CPE), and
transmit a second beam training announcement packet using a second beam formed using the second plurality of antennas, the second beam having a second polarization and formed in a second direction toward a second CPE;
wherein the first beam training announcement packet is sent during a first time slot, and the second beam training announcement packet is sent during the first time slot;
wherein the first direction and the second direction are not the same; and
wherein the first polarization and the second polarization are not the same.
12. The system of claim 11 , wherein the first polarization is vertical polarization.
13. The system of claim 11 , wherein the first polarization is right-handed circular polarization.
14. The system of claim 11 , wherein the transmitter is further configured to:
subsequent to transmitting the first beam training announcement packet, transmit a first beam training packet using the first beam; and
subsequent to transmitting the second beam training announcement packet, transmit a second beam training packet using the second beam.
15. The system of claim 14 , wherein the transmitter is configured to transmit the first beam training packet during a second time slot and transmit the second beam training packet during the second time slot.
16. The system of claim 14 , wherein the first beam training packet includes multiple training symbols.
17. The system of claim 14 , wherein the first beam training announcement packet includes an indication that the first CPE should be prepared to receive the first beam training packet, and the second beam training announcement packet includes an indication that the second CPE should be prepared to receive the second beam training packet.
18. The system of claim 17 , wherein the first beam training announcement packet includes an indication that a third CPE should be prepared to receive the first beam training packet, and the second beam training announcement packet includes an indication that a fourth CPE should be prepared to receive the second beam training packet.
19. The system of claim 11 , further comprising:
a receiver comprising a third plurality of antennas and a fourth plurality of antennas different than the third plurality of antennas, the receiver configured to
receive a first beamforming feedback report from the first CPE, and
receive a second beamforming feedback report from the second CPE.
20. The system of claim 19 , wherein the receiver is configured to receive the first beamforming feedback report during a third time slot and receive the second beamforming feedback report during the third time slot.