Communication signaling using multiple frequency bands in a wireless network

• US 20070099669A1
• Filed: 03/31/2006
• Published: 05/03/2007
• Est. Priority Date: 10/26/2005
• Status: Abandoned Application

• Current Assignee: Tahoe Research Limited (f/k/a Learndale Limited) (Vector Capital Corporation)
• Original Assignee: Tahoe Research Limited (f/k/a Learndale Limited) (Vector Capital Corporation)
• Inventors: Maltsev, Alexander, Khoryaev, Alexey, Maslennikov, Roman, Sadri, Ali, Sergeyev, Vadim
• Application Number:
  US11/394,572
• Publication Number:
  US 20070099669A1
• Time in Patent Office: Days
• US Class Current: 455/562.1
• CPC Class Codes: H04W 16/28 using beam steering
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 84/20 Master-slave selection or change arrangements

Abstract

Communication signals using a first and a second frequency band in a wireless network is described herein. The first frequency band may be associated with a first beamwidth while the second frequency band may be associated with a second beamwidth, the first beamwidth being wider than the second beamwidth. The first frequency band may be used to communicate first signals to facilitate initial communication, including signals and/or control information to coarsely configure a receiving device. The second frequency band may then be used to communicate second signals that facilitate further communication, including signals and/or control information for finer configuring of the receiving device. Alternatively, the first and second frequency bands may be used in a wireless network to communicate a first and a second signals independently.

Claims

1. A method, comprising:

transmitting by a device first signals using a first frequency band, the first frequency band being associated with a first beamwidth, the first signals to facilitate initial communication between the device and at least one other device in a wireless network, including initial communication of signals and/or control information for coarse configuration by the at least one other device to wirelessly communicate with the device, and the devices to subsequently communicate signals and/or control information for finer configuration using a second frequency band associated with a second beamwidth, the first beamwidth being greater than the second beamwidth.

2. The method of claim 1, further comprising transmitting by the device second signals using the second frequency band, the second signals to facilitate further communication between the device and selected one(s) of the at least one other device, including further communication of signals and/or control information for finer configuration by the selected one(s) of the at least one other device to wirelessly communicate with the device.

3. The method of claim 2, wherein said transmitting by a device of first signals using a first frequency band comprises transmitting by the device first signals to facilitate initial communication, including signals to facilitate initial beam forming by the selected one(s) of the at least one other device.

4. The method of claim 3, wherein said transmitting by the device of second signals to the other device using the second frequency band comprises transmitting by the device second signals, including signals to facilitate a more precise beam forming by the selected one(s) of the at least one other device by supplementing the first signals used to initially beam form the selected one(s) of the at least one other device.

5. The method of claim 2, wherein said transmitting by a device of first signals using a first frequency band comprises transmitting by the device first signals including signals to facilitate initial estimation of carrier frequency offset (CFO) by the selected one(s) of the at least one other device.

6. The method of claim 5, wherein said transmitting by the device of second signals to the other device using the second frequency band comprises transmitting by the device second signals to the selected one(s) of the at least one other device, including signals to facilitate a more precise CFO estimation by the selected one(s) of the at least one other device.

7. The method of claim 2, wherein said second frequency band is a higher frequency band than the first frequency band.

8. The method of claim 7, wherein said transmitting by the device of second signals to the other device using the second frequency band comprises transmitting by the device second signals to the selected one(s) of the at least one other device, including signals to facilitate timing synchronization by the selected one(s) of the other device.

9. The method of claim 1, wherein said transmitting by a device of first signals using a first frequency band comprises transmitting by a device of first signals using a frequency band selected from the group consisting of a 2.4 GHz band and a 5.0 GHz band.

10. The method of claim 2, wherein said transmitting by the device of second signals using the second frequency band comprises transmitting by the device second signals to the selected one(s) of the at least one other device, using a second frequency band that is at least 20 GHz.

11. The method of claim 10, wherein said transmitting by the device of second signals to the selected one(s) of the at least one other device using the second frequency band comprises transmitting by the device second signals to the other device using a second frequency band that is centered substantially between 59 and 62 GHz.

12. An article of manufacture, comprising:

a physical storage medium;

a plurality of executable instructions stored in the physical storage medium designed to program a device to enable the device to;

receive first signals using a first frequency band, the first frequency band being associated with a first beamwidth, and the first signals to facilitate initial communication between the device and at least one other device in a wireless network, including initial communication of signals and/or control information for coarse configuration by the device to wirelessly communicate with the at least one other device, and the devices to subsequently communicate signals and/or control information for finer configuration using a second frequency band associated with a second beamwidth, the first beamwidth being greater than the second beamwidth.

13. The article of claim 12, wherein said instructions are adapted to enable said device to receive by the device second signals using the second frequency band, the second signals to facilitate further communication between the device and selected one(s) of the at least one other device, including further communication of signals and/control information for finer configuration by the device to wirelessly communicate with the selected one(s) of the at least one other device.

14. The article of claim 13, wherein said instructions are adapted to enable said device to receive using the first frequency band first signals including signals to facilitate initial beam forming of the device.

15. The article of claim 14, wherein said instructions are adapted to enable said device to receive using the second frequency band second signals including signals to facilitate a more precise beam forming of the device by supplementing the first signals used to facilitate the initial beam forming of the device.

16. The article of claim 13, wherein said instructions are adapted to enable said device to receive using the first frequency band first signals including signals to facilitate initial estimation of carrier frequency offset (CFO) by the device.

17. The article of claim 16, wherein said instructions are adapted to enable said device to receive using the second frequency band second signals including signals to facilitate a more precise CFO estimation by the device.

18. The article of claim 13, wherein said second frequency band is a higher frequency band than the first frequency band and wherein said instructions are adapted to enable said device to receive using the second frequency band second signals including signals to facilitate timing synchronization of the device to further communicate with selected one(s) of the at least one other device.

19. An apparatus, comprising:

a physical (PHY) layer adapted to transmit and/or receive signals to or from at least one other device of a wireless network using a first and a second frequency band associated with a first and a second beamwidth, respectively, the first beamwidth being greater than the second beamwidth; and

a medium access control (MAC) layer coupled to the PHY layer to selectively employ the PHY layer to transmit and/or receive first signals using the first frequency band to facilitate initial communication between the apparatus and selected one(s) of the at least one other device including initial communication of signals and/or control information for coarse configuration by the apparatus and/or by the selected one(s) of the at least one other device to wirelessly communicate with each other, to subsequently and selectively employ the PHY layer to transmit and/or receive second signals using the second frequency band to facilitate further communication between the apparatus and the selected one(s) of the at least one other device, including further communication of signals and/or control information for finer configuration by the apparatus and/or by the selected one(s) of the at least one other device to wirelessly communicate with each other.

20. The apparatus of claim 19, further comprising a first antenna coupled to the PHY layer to be employed by the PHY layer to transmit and/or receive at least the first signals.

21. The apparatus of claim 20, further comprising a second antenna coupled to the PHY layer to be employed by the PHY layer to transmit and/or receive at least the second signals.

22. The apparatus of claim 21, wherein the first and second antennae having a first and second apertures, respectively, the first aperture being narrower than the second aperture.

23. The apparatus of claim 19, wherein said PHY layer is adapted to transmit and/or receive the first and/or the second signals in accordance with orthogonal frequency division multiplexing (OFDM).

24. A system, comprising:

a physical (PHY) layer adapted to transmit and/or receive signals to or from at least one other device of a wireless network using a first and a second frequency band associated with a first and a second beamwidth, respectively, the first beamwidth being greater than the second beamwidth;

a medium access control (MAC) layer coupled to the PHY layer to selectively employ the PHY layer to transmit and/or receive first signals using the first frequency band to facilitate initial communication between the system and selected one(s) of the at least one other device including initial communication of signals and/or control information for coarse configuration by the system and/or by the selected one(s) of the at least one other device to wirelessly communicate with each other, to subsequently and selectively employ the PHY layer to transmit and/or receive second signals using the second frequency band to facilitate further communication between the system and the selected one(s) of the at least one other device, including further communication of signals and/or control information for finer configuration by the apparatus and/or by the selected one(s) of the at least one other device to wirelessly communicate with each other; and

an omnidirectional antenna coupled to the PHY layer to transmit and/or receive at least the first signals.

25. The system of claim 24, further comprising a directional antenna coupled to the PHY layer to transmit and/or receive the second signals.

26. The system of claim 24, wherein said PHY layer is adapted to transmit and/or receive the first and/or the second signals in accordance with orthogonal frequency division multiplexing (OFDM).

27. The system of claim 24, wherein said PHY layer is adapted to transmit and/or receive the first signals using a 2.4 GHz Industrial, Scientific, Medical (ISM) band or a 5.0 GHz Universal Information Infrastructure (UNII) band.

28. The system of claim 24, wherein said PHY layer is adapted to transmit and/or receive the second signals using a frequency band centered at a frequency greater than 20 GHz.