Apparatus and method for spatial division duplex (SDD) for millimeter wave communication system

Patent metadata

Field	Value
Publication number	US-9806789-B2
Application number	US-201113078902-A
Country	US
Kind code	B2
Filing date	Apr 1, 2011
Priority date	Apr 6, 2010
Publication date	Oct 31, 2017
Grant date	Oct 31, 2017

Abstract

An apparatus and method for full-duplex millimeter wave mobile wireless communication are provided. The apparatus includes a Spatial Division Duple (SDD) mobile communication system using millimeter waves, the SDD mobile communication system including a first wireless terminal having a first transmit antenna array having a plurality of first transmit antennas for transmitting a spatially beamformed first transmit beam, and a first receive antenna array having a plurality of first receive antennas for forming a spatially beamformed first receive beam and a second wireless terminal including a second transmit antenna array having a plurality of second transmit antennas for transmitting a spatially beamformed second transmit beam directed towards a receive beam of the first wireless terminal, and a second receive antenna array having a plurality of second receive antennas for forming a spatially beamformed second receive beam directed toward the transmit beam of the first terminal.

First claim

What is claimed is:

1. A wireless terminal for a full-duplex millimeter wave communication system, the wireless terminal comprising:
a transmit antenna array having a plurality of transmit antennas configured to form a spatially beamformed transmit beam to transmit communication signals to a remote terminal; and
a receive antenna array having a plurality of receive antennas configured to form a spatially beamformed receive beam to receive communication signals from the remote terminal,
wherein the plurality of transmit antennas and the plurality of receive antennas use a same frequency to simultaneously transmit the communication signals of the transmit beam to the remote terminal and receive the communication signals of the receive beam from the remote terminal, and
wherein transmit beamforming weights for the plurality of transmit antennas and receive beamforming weights for the plurality of receive antennas are jointly selected, and
wherein the wireless terminal is configured to provide feedback information regarding at least one preferred transmit beam.

2. The wireless terminal of claim 1 ,
wherein the transmit beamforming weights are applied to the transmit antennas in order to form the spatially beamformed transmit beam,
wherein the receive beamforming weights are applied to the receive antennas in order to form the spatially beamformed transmit beam, and
wherein the transmit and receive beamforming weights are selected to reduce interference between the spatially beamformed transmit and receive beams simultaneously using the same frequency to transmit the communication signals of the transmit beam to the remote terminal and receive the communication signals of the receive beam from the remote terminal.

3. The wireless terminal of claim 2 ,
wherein the transmit beamforming weights are not all equal to each other, and
wherein the receive beamforming weights are not all equal to each other.

4. The wireless terminal of claim 2 ,
wherein the transmit beamforming weights adjust a phase of the communication signal of the transmit beam, and
wherein the receive beamforming weights adjust a phase of the communication signal of the receive beam.

5. The wireless terminal of claim 2 , wherein the transmit beamforming weights and the receive beamforming weights are adjusted such that the beamformed transmit beam and the beamformed receive beam do not substantially spatially overlap.

6. The wireless terminal of claim 5 , wherein uplink channel information is received from a wireless terminal receiving the communication signal of the transmit beam.

7. The wireless terminal of claim 2 , wherein the transmit beamforming weights and the receive beamforming weights are adjusted such that the beamformed transmit beam and the beamformed receive beam do not substantially interfere with each other.

8. The wireless terminal of claim 2 ,
wherein the transmit beamforming weights are calculated according to uplink channel information, and
wherein the receive beamforming weights are calculated according to downlink channel information.

9. The wireless terminal of claim 2 , wherein the transmit beamforming weights and the receive beamforming weights are calculated at a same time.

10. The wireless terminal of claim 2 , wherein the transmit beamforming weights and the receive beamforming weights are calculated at different times.

11. The wireless terminal of claim 1 ,
wherein the plurality of transmit antennas and the plurality of receive antennas are arranged in respective L by N matrices,
wherein L is a number of antennas arranged in a first direction, and
wherein N is a number of antennas arranged in a second direction that is perpendicular to the first direction.

12. The wireless terminal of claim 11 ,
wherein a distance between each one of the plurality of transmit antennas is approximately one half of a wavelength of the communication signal, and
wherein a distance between each one of the plurality of receive antennas is approximately one half of the wavelength of the communication signal.

13. The wireless terminal of claim 12 , wherein a distance between adjacent ones of the transmit antennas and the receive antennas is approximately one half of a wavelength of the communication signal.

14. The wireless terminal of claim 1 , wherein the transmit antenna array and the receive antenna array face different directions.

15. The wireless terminal of claim 1 , wherein the transmit antenna array and the receive antenna array face a same direction.

16. The wireless terminal of claim 15 , wherein the transmit antennas and the receive antennas are intermixed on an antenna array including both the transmit antenna array and the receive antenna array.

17. The wireless terminal of claim 15 ,
wherein the transmit antennas are formed in a transmit area and the receive antennas are formed in a receive area, and
wherein the transmit area and the receive area are disposed on an antenna array including both the transmit antenna array and the receive antenna array.

18. The wireless terminal of claim 17 , wherein the transmit area and the receive area are adjacent to each other on the antenna array.

19. The wireless terminal of claim 1 , wherein the wireless terminal uses a selected number of the plurality of transmit antennas to form the spatially beamformed transmit beam.

20. The wireless terminal of claim 1 , wherein the wireless terminal uses a selected number of the plurality of receive antennas to form the spatially beamformed receive beam.

21. The wireless terminal of claim 1 ,
wherein the wireless terminal transmits more than one transmit beam at a same time using a same frequency,
wherein each of the more than one transmit beam is spatially separated from each other, and
wherein the more than one transmit beam uses respective ones of the plurality of transmit antennas to form the spatially separated more than one transmit beam.

22. The wireless terminal of claim 1 , wherein the wireless terminal engages in full-duplex communication with another wireless terminal using a same frequency at a same time.

23. The wireless terminal of claim 1 , wherein the wireless terminal comprises a Base Station (BS).

24. The wireless terminal of claim 1 , wherein the wireless terminal comprises a Mobile Station (MS).

25. A Spatial Division Duple (SDD) mobile communication system using millimeter waves, the SDD mobile communication system comprising:
a first wireless terminal comprising:
a first transmit antenna array having a plurality of first transmit antennas configured to transmit a spatially beamformed first transmit beam; and
a first receive antenna array having a plurality of first receive antennas configured to form a spatially beamformed first receive beam,

wherein the first transmit antenna array and the first receive array are spatially configured by jointly selected transmit and receive beamforming weights; and
a second wireless terminal comprising:
a second transmit antenna array having a plurality of second transmit antennas configured to transmit a spatially beamformed second transmit beam directed towards a receive beam of the first wireless terminal; and
a second receive antenna array having a plurality of second receive antennas configured to form a spatially beamformed second receive beam directed toward a transmit beam of the first wireless terminal,

wherein the second transmit antenna array and th

Assignees

• Khan Farooq
• Pi Zhouyue
• Samsung Electronics Co Ltd

Inventors

• Khan Farooq
• Pi Zhouyue

Classifications

• H04W88/02

  Terminal devices · CPC title

• H04B7/086 Primary

  using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming · CPC title

• H01Q1/242

  specially adapted for hand-held use · CPC title

• H01Q25/005

  providing two patterns of opposite direction; back to back antennas (H01Q25/004 takes precedence) · CPC title

• H04W88/06

  adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals · CPC title