Using multiple frequency bands with beamforming assistance in a wireless network
First Claim
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1. A method comprising:
- using a second frequency band for communication;
using a first frequency band, having a lower frequency than the second frequency band and a wider beam width, for beam forming assistance for the second frequency band;
using the beam forming assistance from the first frequency band to fine tune the beam for the second frequency band;
receiving a frame in an initiator in said first frequency band from a remote device; and
transmitting over the first frequency band, a communication to the remote device to determine the remote device'"'"'s capability to transmit on said second frequency band;
repositioning directional transmitters and receivers of said initiator and said remote device; and
thereafter transmitting a test signal to establish a link between the initiator and the remote device.
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Abstract
A communication device communicates with other communication devices in a wireless network using a first and a second frequency band. In accordance with some embodiments, inter-band beamforming assistance may be provided by the lower frequency band.
65 Citations
30 Claims
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1. A method comprising:
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using a second frequency band for communication; using a first frequency band, having a lower frequency than the second frequency band and a wider beam width, for beam forming assistance for the second frequency band; using the beam forming assistance from the first frequency band to fine tune the beam for the second frequency band; receiving a frame in an initiator in said first frequency band from a remote device; and transmitting over the first frequency band, a communication to the remote device to determine the remote device'"'"'s capability to transmit on said second frequency band; repositioning directional transmitters and receivers of said initiator and said remote device; and thereafter transmitting a test signal to establish a link between the initiator and the remote device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. One or more non-transitory computer readable media storing instructions executed by a processor to perform a sequence comprising:
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estimating beam directions for a first frequency band; applying beam direction refinement for a second frequency band having a higher frequency than said first frequency band and a narrower beam width; using said first frequency band for beam forming assistance for the second frequency band; using said beam forming assistance from the first frequency band to fine tune the beam for the second frequency band; receiving a frame in an initiator in said first frequency band from a remote device; and transmitting over the first frequency band, a communication to the remote device to determine the remote device'"'"'s capability to transmit on said second frequency band; repositioning directional transmitters and receivers of said initiator and said remote device; and thereafter transmitting a test signal to establish a link between the initiator and the remote device. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An apparatus comprising:
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a first transmitter to transmit in a lower frequency band; and a second transmitter to transmit in a higher frequency band and narrower beam width for beam forming assistance for the lower frequency band and said second transmitter to obtain beam direction refinement from said first transmitter in a dual band millimeter-wave system using collocated transmitters, said second transmitter to use the assistance from the first transmitter to fine tune the beam for the second transmitter, receive a frame in an second transmitter in said first frequency band from a remote device; and
transmit over the first frequency band, a communication to the remote device to determine the remote device'"'"'s capability to transmit on said second frequency band;
reposition directional transmitters and receivers of said second transmitter and said remote device; and
thereafter transmit a test signal to establish a link between the initiator and the remote device. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification