Point to point link and communication method

1. A method for providing point-to-point wireless communication between a first and second node forming a link, the method comprising:

providing multiple concurrent transmissions from multiple antennas in an antenna array arrangement in the first node to the second node;

controlling beam patterns of said antennas to reduce interference; and

allocating at least one MIMO (Multiple In Multiple Out) stream to different antennas in said antenna arrangement for said transmissions.

2. The method according to claim 1 , wherein said step of allocating includes adaptively allocating said at least one MIMO stream in response to link conditions.

3. The method according to claim 1 , wherein said antenna arrangement includes at least two directional antennas, and said step of controlling includes arranging said antennas to communicate in pre-selected directions.

4. The method according to claim 1 , wherein said antenna arrangement includes a plurality of omni-directional antennas, and said step of controlling includes implementing beam-forming techniques.

5. The method according to claim 4 , wherein said step of controlling includes utilizing beam-forming techniques to select beam patterns between 180° to 60° for said antennas.

6. The method according to claim 1 , further comprising implementing OFDMA for said transmissions.

7. The method according to claim 1 , further comprising utilizing modulation of at least 128 QAM for said transmissions.

8. The method according to claim 1 , including adaptively allocating beam patterns to said antennas depending on link conditions.

9. The method according to claim 1 , further comprising

implementing a modulation adaptation scheme in said controller; and

allocating modulation between QPSK and 256 QAM in accordance with said scheme.

10. A point-to-point link in a wireless communications network, the link comprising:

two nodes coupled for wireless communication;

each node including an RF transceiver and associated modem;

an antenna arrangement in each said node for providing multiple concurrent transmissions;

said antennas having beam patterns selected for reducing interference;

a controller for allocating at least one MIMO stream to different antennas in said antenna arrangement for said transmissions; and

means in said controller for allocating said MIMO streams and allocating modulation to said antennas.

11. The link according to claim 10 , wherein said antenna arrangement includes at least two directional antennas having beam patterns defined in advance.

12. The link according to claim 10 , wherein said antenna arrangement includes a plurality of omni-directional antennas having configurable beam patterns.

13. The link according to claim 12 , wherein said controller includes means for implementing smart antenna techniques to control said beam patterns.

14. The link according to claim 10 , wherein said modem and said controller include means for implementing orthogonal frequency division multiple access (OFDMA) for transmissions over the link.

15. The link according to claim 14 , wherein said controller allocates one of 512 or 1024 or 2048 FFT modulation, to improve robustness of link to multi-path.

16. A mobile broadband wireless link comprising:

two nodes;

each said node including:

an RF transceiver with associated modem;

an antenna arrangement having a beam pattern selected to improve quality of transmission and reduce interference coupled to said modem and arranged for multiple concurrent transmissions;

a MAC controller for controlling said transceiver, modem and antenna arrangement for providing both access and backhaul communication;

said controller including means for adaptively allocating at least one MIMO stream to different antennas in said antenna arrangement for said transmissions, depending on link conditions; and

said controller including means for allocating modulation to said antennas;

further said modem and MAC for providing orthogonal frequency division multiple access (OFDMA) for data transmitted between said two access points.

17. The link according to claim 16 , wherein said antenna arrangement includes at least two directional antennas having beam patterns defined in advance.

18. The link according to claim 16 , wherein said antenna arrangement includes a plurality of omni-directional antennas having beam patterns configurable by said MAC controller.

19. The link according to claim 16 , wherein each node further includes a single radio-PHY-MAC module for providing access and backhaul communication.