Abstract:
For example, an apparatus may include logic and circuitry configured to cause a first wireless station to perform a Transmit Sector Sweep (TXSS) protocol with a second wireless station over a directional frequency band using a plurality of antennas of the first wireless station, an antenna of the plurality of antennas of the first wireless station comprising a plurality of sectors; to perform a Receive Sector Sweep (RXSS) protocol with the second wireless station over the directional frequency band using the plurality of antennas of the first wireless station; and, based on the TXSS and RXSS protocols, to configure the plurality of antennas of the first wireless station to communicate a Single-User (SU) Multiple-Input-Multiple-Output (MIMO) transmission with the second wireless station.
Abstract:
Generally discussed herein are devices and methods for MIMO communications. A device can include processing circuitry (e.g., PHY and/or MAC layer circuitry) configured to transmit an enhanced sector sweep (ESSW) frame for each of a plurality of transmit sectors, wherein each of the plurality of transmit sectors correspond to a weight vector for the first plurality of antennas, each ESSW frame including a plurality of training units to simultaneously beamforming train one or more responder STAs, receive an SSW feedback frame, each SSW feedback frame indicating a transmit sector of the plurality of transmit sectors and a receive sector of a corresponding STA of the one or more STAs to be used in communication between the initiator STA and the responder STA, and transmit one or more SSW acknowledgement frames to the one or more responder STAs to verify the transmit sector and receive sector to use for communication.
Abstract:
Some demonstrative embodiments include apparatuses, devices, systems and methods of beamforming. For example, a first wireless station may process transmission of a first plurality of Beam Refinement Phase (BRP) frames to a second wireless station during a BRP, one or more duration fields of one or more respective BRP frames of the first plurality of BRP frames being according to an end time; and may process reception of a second plurality of BRP frames from the second wireless station during the BRP, one or more duration fields of one or more respective BRP frames of the second plurality of BRP frames being according to the end time.
Abstract:
Some demonstrative embodiments include apparatuses, devices, systems and methods of dynamically scheduling a transmit opportunity. For example, a first wireless station may be configured to generate a grant frame including a duration field and a dynamic allocation information field, the dynamic allocation information field including an allocation duration subfield, the allocation duration subfield being set to a value within a predefined range of values, when the grant frame is to grant to a second wireless station a period after a Transmit Opportunity (TxOP), the allocation duration subfield being set to a predefined value which is not within the predefined range of values, when the grant frame is to grant to the second wireless station a period within the TxOP; and transmit the grant frame during the TxOP.
Abstract:
Some demonstrative embodiments include devices, systems and/or methods of wireless communication via multiple antenna assemblies. For example, a device may include a wireless communication unit to transmit and receive signals via one or more quasi-omnidirectional antenna assemblies, wherein the wireless communication unit is to transmit, via each quasi-omnidirectional antenna assembly, a plurality of first transmissions, to receive, in response to the first transmissions, a plurality of second transmissions from another device via one or more of the quasi-omnidirectional antenna assemblies, and, based on the second transmissions, to select at least one selected transmit antenna assembly for transmitting to the other device and a selected receive antenna assembly for receiving transmissions from the other device. Other embodiments are described and claimed.
Abstract:
Bidirectional iterative beam forming techniques are described. An apparatus may include a wireless device having an antenna control module operative to initiate beam formation operations using an iterative training scheme to form a pair of communications channels for a wireless network, the antenna control module to communicate training signals and feedback information with a peer device via the transceiver and phased antenna array using partially or fully formed high rate channels, and iteratively determine antenna-array weight vectors for a directional transmit beam pattern for the phased antenna array using feedback information from the peer device. Other embodiments are described and claimed.
Abstract:
Some demonstrative embodiments include devices, systems and/or methods of wireless communication over a beamformed communication link. For example, a time for communicating may be requested, granted, and the communication take place between two consecutive beacons. In some embodiment, specific formats may be used to communicate the necessary information in this exchange.
Abstract:
Some demonstrative embodiments include apparatuses, devices, systems and methods of beamforming. For example, a responder station may process a received Beam Refinement Protocol (BRP) request including a beam tracking request from an initiator station; and select whether or not to transmit a BRP response including beam tracking feedback, in response to the BRP request, based on a comparison between a time period and a BRP tracking time limit, the time period being based on a timing of the BRP request and a timing of the BRP response.
Abstract:
Some demonstrative embodiments include devices, systems and/or methods of wireless communication via multiple antenna assemblies. For example, a device may include a wireless communication unit to transmit and receive signals via one or more quasi-omnidirectional antenna assemblies, wherein the wireless communication unit is to transmit, via each quasi-omnidirectional antenna assembly, a plurality of first transmissions, to receive, in response to the first transmissions, a plurality of second transmissions from another device via one or more of the quasi-omnidirectional antenna assemblies, and, based on the second transmissions, to select at least one selected transmit antenna assembly for transmitting to the other device and a selected receive antenna assembly for receiving transmissions from the other device. Other embodiments are described and claimed.
Abstract:
In Down Link MU-MIMO, an AP transmits to several STAs concurrently. In the mmWave band, directional transmissions are used so it is necessary for both the AP and the STAs to set their antenna arrays (by setting their antenna weight vectors—AWVs) in the best way to receive the transmissions directed to them by the AP and to avoid interference from transmissions directed to other devices. An exemplary embodiment discloses a beamforming training protocol that is capable of generating a set of antenna weight vectors for MU-MIMO operation that at least improves performance of subsequent communications.