Embodiments of an access point (AP), a user station (STA), and a method for range estimation in a wireless network are generally described herein. For example, the AP may encode a common information field of a first trigger frame to include a trigger frame type configured to check the readiness of associated and unassociated STAs. The AP may transmit the first trigger frame to STAs and receive feedback from the STAs. The AP may further encode, based on the feedback, a common information field of a second trigger frame to include one of: a trigger frame type that solicits negotiation packets from associated and unassociated STAs using an association identifier (AID) and a pre-AID; or a trigger frame type that solicits channel sounding packets from associated and unassociated STAs using an AID and a pre-AID. The AP may further transmit the second trigger frame to the STAs.

The present disclosure includes systems and methods for reducing intra-cell interference during uplink MU-MIMO. An uplink grant that allocates a plurality of resource blocks is obtained. A first portion of the plurality of RBs that are overlapping with a set of RBs granted to a second UE is determined. A second portion of the plurality of RBs that are non-overlapping with the set of RBs granted to the second UE is also determined. A first demodulation reference signal (DMRS) sequence is generated for the first portion of the plurality of RBs. A second DMRS sequence is generated for the second portion of the plurality of RBs, where the second DMRS sequence is different than the first DMRS sequence. An uplink transmission (e.g., PUCCH, PUSCH) is generated that includes RBs having different DMRS sequences.

Some demonstrative embodiments include apparatuses, systems and/or methods of Location Measurement Report (LMR) feedback. For example, an apparatus may include logic and circuitry configured to cause a first wireless station to process at least one channel sounding frame from at least one second wireless communication station; to determine one or more ranging measurements based on the channel sounding frame; and to transmit an LMR feedback frame to the second wireless communication station, the LMR feedback frame including the one or more ranging measurements, and an indication that the LMR feedback frame is not to be acknowledged by an acknowledgement (Ack) frame.

Example systems, methods, and devices for extending range of WiFi networks are discussed. More specifically, methods for extending range of a Wi-Fi network are disclosed. The method may include the operations of appending, by a network device, one or more codebits to one or more original codebits or coded symbols, sending, by the network device, the original codebits or coded symbols and the appended codebits to an interleaver or a constellation mapper for transmission. The original codebits or coded symbols and the appended codebits may be sent over a plurality of subcarriers. Methods, apparatus, and systems described herein can be applied to 802.11ax or any other wireless standard.

Techniques for resource block allocation in a multi-user MIMO High Efficiency WLAN system are provided. Specifically, teachings that when taken alone or together, provide a device or a group of devices with an improved resource allocation for the reduction of usable tone waste, are presented. The present disclosure includes a system that provides a user with a technique allocating data tones prior to the encapsulation unit or overhead tones on a resource block unit. Further, the total allocated bandwidth can be reduced prior resource allocation to overcome modulation and coding scheme downgrading caused by severe puncturing. Alternatively, only band edge basic resource blocks are reduced to account for overhead tones which largely reside on band edges

The disclosure relates to a device (200) for controlling a plurality of antenna elements (104) of an antenna array (101) of a multi-input multi-output (MIMO) communication system (100), the device (200) comprising: a communication handler (201) configured to receive channel information (202) from a first user equipment (103) of a plurality of user equipments, the channel information (202) indicating a communication channel quality of the first user equipment (103), and configured to receive quality of service (QoS) information (204) indicating a QoS requirement for the first user equipment (103); and a controller (203) configured to generate a plurality of weights (206) for beamforming the plurality of antenna elements (104) based on the channel information (202) and based on the QoS information (204).

Embodiments of a User Equipment (UE) and methods for communication using beam aggregation are generally described herein. The UE may receive first and second directional signals from a first eNB and a second eNB as part of a beam aggregation. The UE may transmit one or more channel state information (CSI) messages to the eNBs. The CSI messages may include rank indicators (RI) for the first and second signals. The RIs may indicate numbers of directional beams between the eNBs and the UE that are determined as part of the reception of the first signal. In some cases, when multiple transmit beams are included in a directional signal, the CSI messages may include multiple RIs for each of the transmitted beams.

A wireless communication system may use a dual mode sounding reference signal (SRS) scheme to improve both beam tracking and uplink channel measurements. An eNB may transmit control signals directing user equipment (UE) to transmit either a first type of SRS or a second type of SRS. The UE may transmit a first SRS of the first type over an omnidirectional beam and transmit a second SRS of the second type over a directional beam based on the control signals. The UE also may use the first SRS for beamforming calculations, use the second SRS for uplink channel measurements, and transmit data over a physical uplink shared channel (PUSCH) based on the calculations and measurements.

A wireless communication device, system, and method. The device includes a memory, and processing circuitry coupled to the memory, the memory including logic. The processing circuitry is to implement the logic to: process a first packet from another device; encode a second packet to the other device by applying cyclic shift delay (CSD) to symbols of the second packet, the CSD being based on a time of arrival (ToA) of the first packet at the device; cause transmission of the second packet such that a time interval between a Fast Fourier Transform (FFT) clock boundary of the first packet and a FFT clock boundary of the second packet at the device is a predetermined integer number of clock cycles of a sampling clock of the device.

Some demonstrative embodiments include apparatuses, systems and/or methods of Multi-User (MU) ranging measurement. For example, an apparatus may include circuitry and logic configured to cause a wireless station to generate a plurality of sounding sequences corresponding to a plurality of stations (STAs), the plurality of sounding sequences including at least first and second different sounding sequences, the first sounding sequence corresponding to at least one first STA of the plurality of STAs, the second sounding sequence corresponding to at least one second STA of the plurality of STAs; during a Multi-User (MU) ranging measurement, to transmit a MU frame to indicate a MU Downlink (DL) transmission; and, following the MU frame, to transmit a MU DL Null Data Packet (NDP) transmission to the plurality of STAs, the MU DL NDP transmission including a plurality of Long Training Fields (LTFs) including the plurality of sounding sequences.

Embodiments allow a station to determine which of a plurality of spatial beams is best suited for communicating with user equipment (UE). Some embodiments overlay spatial multiplexing in a way that provides support for UE without changing existing signaling schemes. In these embodiments, different messages, each designed to provoke different behavior in the UE, are transmitted on different spatial beams. The station then observes the behavior to determine which beam is most suited for the UE. Other embodiments design new signaling schemes to effectively allow UE supporting the schemes to identify which beam is most suited for communication. A single reference signal is scrambled with one of a plurality of indexing sequences, and each is transmitted on a different spatial beam. The UE performs a channel quality estimate for each scrambled signal and determines the index best suited for communication. The index may then be transmitted to the station.

Techniques for facilitating device-to-device (D2D) communications using a high efficiency distributed channel access scheme are generally described herein. In some examples, a communication zone allocated for wireless D2D communications is divided into resource contention and scheduled transmission portions. The resource contention segment may be used to transmit a request message from a transmitting device to a receiving device (a request-to-send message), and transmit a response to the request message from the receiving device to the transmitting device (a clear-to-send message). The response can indicate a time for the data transmission to occur during the scheduled transmission segment. During the scheduled transmission segment, the scheduled data transmission and other D2D data transmissions among the various devices will be performed. In further examples, contention access techniques may be used during the resource contention segment to manage access to the resource channel.

Technology for determining a common search space (CSS) from a physical resource block (PRB) indication for a stand-alone carrier type is disclosed. In an example, a user equipment (UE) configured for determining a common search space (CSS) from a physical resource block (PRB) indication for a stand-alone carrier type can include a processing module to: Determine a PRB set in the CSS from an enhanced physical hybrid automatic repeat request (ARQ) indicator channel (ePHICH) configuration information in a master information block (MIB); and decode an enhanced physical downlink control channel (ePDCCH) or the ePHICH from PRB region candidates in the PRB set.

Example systems, methods, and devices for differentiating Wi-Fi signals for spatial reuse are discussed. More specifically, a communication station arranged for Clear Channel Assessment (CCA) channel status reporting, an access point, and communication methodologies therebetween are disclosed. Methods, apparatus, and systems described herein can be applied to 802.11ax or any other wireless standard.