WIRELESS PERSONAL AREA NETWORK TRANSMIT BEAMFORMING
First Claim
1. A method for beamforming wireless transmissions, comprising:
- establishing, at a beamformer device, a wireless link with a beamformee device in a wireless personal area network (WPAN) that implements a frequency hopping system;
receiving, at the beamformer device, a first packet from the beamformee device, wherein the first packet is received on a first frequency;
estimating, at the beamformer device, channel state information associated with the wireless link based on the first packet received from the beamformee device; and
beamforming, by the beamformer device, a second packet transmitted to the beamformee device to steer the second packet in a direction towards the beamformee device, wherein the second packet is transmitted on the first frequency.
1 Assignment
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Accused Products
Abstract
According to various aspects, techniques to enable implicit and/or explicit transmit (Tx) beamforming in a wireless personal area network are provided. In particular, the implicit transmit beamforming may be enabled during certain events, frames, and/or other conditions when a channel between a beamformer and a beamformee is reciprocal (i.e., packets are received and transmitted on the same frequency). In such cases, the beamformer may estimate channel state information (CSI) based on a packet received from the beamformee and use the estimated CSI to steer a beam in a direction towards the beamformee. In use cases that implement explicit transmit beamforming, the beamformee may estimate the CSI based on a packet received from the beamformer and provide the estimated CSI to the beamformer, which may then use the estimated CSI received from the beamformee to steer a beam in a direction towards the beamformee.
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Citations
44 Claims
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1. A method for beamforming wireless transmissions, comprising:
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establishing, at a beamformer device, a wireless link with a beamformee device in a wireless personal area network (WPAN) that implements a frequency hopping system; receiving, at the beamformer device, a first packet from the beamformee device, wherein the first packet is received on a first frequency; estimating, at the beamformer device, channel state information associated with the wireless link based on the first packet received from the beamformee device; and beamforming, by the beamformer device, a second packet transmitted to the beamformee device to steer the second packet in a direction towards the beamformee device, wherein the second packet is transmitted on the first frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A beamformer device, comprising:
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a receiver configured to receive, from a beamformee device, a first packet transmitted on a first frequency over a wireless personal area network (WPAN) that implements a frequency hopping system; one or more processors configured to estimate channel state information associated with a wireless link between the beamformer device and the beamformee device based on the first packet received from the beamformee device; and a transmitter comprising multiple transmit antennas configured to beamform a second packet transmitted to the beamformee device such that the second packet is steered in a direction towards the beamformee device, wherein the second packet is transmitted on the first frequency. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A beamformer device, comprising:
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means for receiving, from a beamformee device, a first packet transmitted on a first frequency over a wireless personal area network (WPAN) that implements a frequency hopping system; means for estimating channel state information associated with a wireless link between the beamformer device and the beamformee device based on the first packet received from the beamformee device; and means for beamforming a second packet transmitted to the beamformee device such that the second packet is steered in a direction towards the beamformee device, wherein the second packet is transmitted on the first frequency.
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20. A computer-readable storage medium having computer-executable instructions recorded thereon, the computer-executable instructions configured to cause a beamformer device having one or more processors to:
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receive, from a beamformee device, a first packet transmitted on a first frequency over a wireless personal area network (WPAN) that implements a frequency hopping system; estimate channel state information associated with a wireless link between the beamformer device and the beamformee device based on the first packet received from the beamformee device; and beamform a second packet transmitted to the beamformee device such that the second packet is steered in a direction towards the beamformee device, wherein the second packet is transmitted on the first frequency.
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21. A method for beamforming wireless transmissions, comprising:
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establishing, at a beamformer device, a wireless link with a beamformee device in a wireless personal area network (WPAN) that implements a frequency hopping system; configuring, at the beamformer device, a first packet to request that the beamformee device return a response packet that enables the beamformer device to obtain an estimate of channel state information associated with the wireless link; transmitting, by the beamformer device, the first packet to the beamformee device; and beamforming, by the beamformer device, a second packet transmitted to the beamformee device in accordance with the frequency hopping system based on the response packet returned from the beamformee device, wherein the beamformer device is configured to beamform the second packet to steer the second packet in a direction towards the beamformee device. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A beamformer device, comprising:
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one or more processors configured to establish a wireless link with a beamformee device in a wireless personal area network (WPAN) that implements a frequency hopping system and to configure a first packet to request that the beamformee device return a response packet to enable the beamformer device to obtain an estimate of channel state information associated with the wireless link; and a transmitter configured to transmit the first packet to the beamformee device and to transmit a second packet to the beamformee device in accordance with the frequency hopping system based on the response packet returned from the beamformee device, wherein the transmitter comprises multiple transmit antennas configured to beamform at least the second packet such that the second packet is steered in a direction towards the beamformee device. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. A beamformer device, comprising:
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means for establishing a wireless link with a beamformee device in a wireless personal area network (WPAN) that implements a frequency hopping system; means for configuring a first packet to request that the beamformee device return a response packet to enable the beamformer device to obtain an estimate of channel state information associated with the wireless link; means for transmitting the first packet to the beamformee device; and means for transmitting a second packet to the beamformee device in accordance with the frequency hopping system based on the response packet returned from the beamformee device, wherein at least the second packet is beamformed such that the second packet is steered in a direction towards the beamformee device.
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44. A computer-readable storage medium having computer-executable instructions recorded thereon, the computer-executable instructions configured to cause a beamformer device having one or more processors to:
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establish a wireless link with a beamformee device in a wireless personal area network (WPAN) that implements a frequency hopping system; configure a first packet to request that the beamformee device return a response packet to enable the beamformer device to obtain an estimate of channel state information associated with the wireless link; transmit the first packet to the beamformee device; and transmit a second packet to the beamformee device in accordance with the frequency hopping system based on the response packet returned from the beamformee device, wherein at least the second packet is beamformed such that the second packet is steered in a direction towards the beamformee device.
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Specification