Wireless communication system, wireless communication apparatus, and wireless communication method
A wireless communication system is disclosed. The wireless communication system performs data transmission using spatially multiplexed streams from a first terminal including N antennas to a second terminal including M antennas (N and M are integers larger than or equal to 2 and N>M).
1. An electronic device for wireless communication, the electronic device comprising:
circuitry configured to:
exchange capability information with another electronic device, the capability information including at least a first field, a second field and a third field; and
perform wireless communication with the another electronic device based on the capability information,
wherein the first field includes a capability of performing transmission beamforming, the second field indicates a capability of a beamformee for receiving a sounding packet, and the third field includes maximum dimension information indicating a maximum number of rows of a feedback matrix for the transmission beamforming.
2. The electronic device of claim 1 , wherein the capability information is present in a management frame.
3. The electronic device of claim 2 , wherein the management frame includes:
a beacon signal, a measure pilot, an association response, a re-association response, and/or a probe response.
4. The electronic device of claim 1 , wherein the capability information further includes a fourth field indicating both implicit beamforming capability information and explicit beamforming capability information.
5. The electronic device of claim 1 , wherein the capability information is defined as a beamforming capability field in IEEE standard 802.11.
6. The electronic device of claim 5 , wherein the beamforming capability field is included in a HT capability field defined by the IEEE standard 802.11.
7. The electronic device of claim 5 , further comprising: a plurality of antennas configured to transmit or receive signals.
8. The electronic device of claim 7 , wherein a number of the plurality of antennas is two.
9. The electronic device of claim 7 , wherein a number of the plurality of antennas is three.
10. The electronic device of claim 7 , further comprising: a plurality of digital filters configured to perform band limitation, the number of the plurality of digital filters being equal to a number of the plurality of antennas.
11. The electronic device of claim 1 , wherein a number indicated by the maximum number of rows corresponds to a number of antennas of a beamformer or less.
12. The electronic device of claim 11 , wherein a number indicated by the maximum number of rows corresponds to a number of antennas of a beamformer.
13. The electronic device of claim 1 , wherein a number indicated by the maximum number of rows is more than one.
14. A mobile electronic apparatus for wireless communication, the mobile electronic apparatus comprising:
a plurality of antennas; and
circuitry configured to:
exchange capability information with another electronic device, the capability information including at least a first field, a second field and a third field; and
perform wireless communication with the another electronic device based on the capability information,
wherein the first field includes a capability of performing transmission beamforming, the second field indicates a capability of a beamformee for receiving a sounding packet, and the third field includes maximum dimension information indicating a maximum number of rows of a feedback matrix for the transmission beamforming.
15. The mobile electronic apparatus of claim 14 , wherein the capability information is present in a management frame.
16. The mobile electronic device of claim 15 , wherein the management frame includes: a beacon signal, a measure pilot, an association response, a re-association response, and/or a probe response.
17. The mobile electronic device of claim 14 , wherein the capability information further includes a fourth field indicating both implicit beamforming capability information and explicit beamforming capability information.
18. The mobile electronic device of claim 14 , wherein the capability information is defined as a beamforming capability field in IEEE standard 802.11.
19. The mobile electronic device of claim 18 , wherein the beamforming capability field is included in a HT capability field defined by the IEEE standard 802.11.
20. The mobile electronic device of claim 14 , wherein the number of the plurality of antennas is two.
21. The mobile electronic device of claim 14 , wherein the number of the plurality of antennas is three.
22. The mobile electronic device of claim 14 , further comprising: a plurality of digital filters configured to perform band limitation, the number of the plurality of digital filters being equal to a number of the plurality of antennas.
23. The mobile electronic apparatus of claim 14 , wherein a number indicated by the maximum number of rows corresponds to a number of antennas of a beamformer or less.
24. The mobile electronic apparatus of claim 23 , wherein a number indicated by the maximum number of rows corresponds to a number of antennas of a beamformer.
25. The mobile electronic apparatus of claim 14 , wherein a number indicated by the maximum number of rows is more than one.
26. A method for wireless communication comprising:
exchanging capability information with another electronic device, the capability information including at least a first field, a second field and a third field; and
performing wireless communication with the another electronic device based on the capability information,
wherein the first field includes a capability of performing transmission beamforming, the second field indicates a capability of a beamformee for receiving a sounding packet, and the third field includes maximum dimension information indicating a maximum number of rows of a feedback matrix for the transmission beamforming.
27. The method of claim 26 , wherein a number indicated by the maximum number of rows corresponds to a number of antennas of a beamformer or less.
28. The method of claim 27 , wherein a number indicated by the maximum number of rows corresponds to a number of antennas of a beamformer.
29. The method of claim 26 , wherein a number indicated by the maximum number of rows is more than one.