Abstract: An approach is provided for sensing changes in a physical environment, where a transmitter transmits a request for measurement of at least one symbol. The request includes an identifier and an indication of the at least one symbol. A signal comprising the at least one symbol, is transmitted, and a measurement report for the at least one symbol is received. A receiver receives a request for measurement of at least one symbol in which the request includes an identifier and an indication of the at least one symbol. A signal including the at least one symbolis received. Measurements are reported on the at least one symbol to provide a measurement report, and the measurement report is transmitted.

Abstract: A wireless device (AP1) contends for access to a medium. In response to gaining access to the medium, the wireless device (AP1) reserves a TXOP on the medium. Further, the wireless device (AP1) configures a set of resources (501, 502, 503) in the reserved TXOP to be available to at least one other wireless device (AP2, STA31) for one or more transmissions of data (D) arriving after beginning of the TXOP.

Abstract: A method for a wireless transmitter is disclosed. The method comprises transmitting a wake-up signal over a frequency range during a time interval by transmitting a first signal part over a first frequency interval within the frequency range during the time interval and transmitting a second signal part over a second frequency interval within the frequency range during the time interval. The first and second frequency intervals are non-overlapping. The first signal part has a first auto-correlation value, and the second signal part is specifically constructed to provide a second autocorrelation value of the signal comprising the first and second signal parts which is lower than the first auto-correlation value. The invention to solve the problem of false detection of an MC-OOK modulated wake-up signal in an IEEE 802.11 system using OFDM.

Abstract: A method is disclosed of a transmitter configured to transmit one or more physical layer packets, which together have a plurality of measurement signals for channel estimation. The method includes receiving (from a sensing device) a precoding setting request for the measurement signals for channel estimation, wherein the precoding setting request is indicative of one or more precoding settings prioritized for sensing, configuring the transmitter to use precoding settings for the plurality of measurement signals for channel estimation based on the precoding setting request, and transmitting the one or more physical layer packets. A method is also disclosed of a receiver configured to operate as a sensing device.

Abstract: A method of transmitting signals includes transmitting a signal from a plurality of antennas over a plurality of subcarriers. The signal is on-off keyed and comprises a plurality of on periods and a plurality of off periods. Each on period comprises, on each subcarrier, a frequency domain symbol associated with the subcarrier. The frequency domain symbol is phase shifted from each antenna by a respective factor of a set of factors associated with the subcarrier. The set of factors is different for at least two of the subcarriers.

Abstract: A system for multi-link transmission in a wireless network having multiple nodes. Each node defines a corresponding coverage area and is configured to perform operations in the wireless network. The system has a device configured to transition between nodes and corresponding coverage areas and perform operations in the wireless network, a controller causing transmission of data between the device and a set of nodes using a multi-link connection. The multi-link includes a first transmission link and a second transmission link associating the device with the node set. The controller causes transmission of data over the first transmission link and/or the second transmission link. The same frequency and same cell identifier is allocated to the node set for transmission of data in the first transmission link. Different cell identifiers are allocated to respective node in the node set for transmission of data in the second transmission link.

Abstract: A method is disclosed of a transmitter configured to transmit a physical layer packet comprising a plurality of measurement signals for channel estimation. The method includes configuring the transmitter to use different precoding settings for at least two of the plurality of measurement signals for channel estimation, and transmitting the physical layer packet. In some embodiments, at least one of the plurality of measurement signals for channel estimation occurs outside of a preamble of the physical layer packet (e.g., in a midamble). A method of a corresponding receiver is also disclosed. Corresponding apparatuses, wireless communication device, and computer program product are also disclosed.

Abstract: A system includes a device configured to be connected to a first node and a second node. The first and second nodes are located in different entities in a wireless network, a controller configured to cause initiation and establishment of a multi-link connection. The multi-link has at least two links connecting the device with the first and/or the second node. Each link is configured to communicate with the first node and/or the second node. The first node is configured to transmit a request for establishing the connection to the second node. The second node is configured to cause and transmit a confirmation for establishing the connection to the first node and/or the device at reception of the request. The first node and second nodes, at establishment of the connection, are configured to function as a node entity associated with the device and to cause communication with the device over the connection.

Abstract: Methods, apparatus and device-readable mediums are disclosed relating to wireless access in a network requiring a carrier-sense mechanism. One aspect provides a method performed by a transmitting device for transmitting to a receiving device in a 10 wireless communications network. The transmitting device comprises a plurality of antenna elements. The method comprises: performing a directional carrier-sense assessment for one or more sub-bands configured for transmissions between the transmitting device and the receiving device, the directional carrier-sense assessment utilizing beamforming to detect a respective level of wireless activity on each of the sub-15 bands in a particular direction for transmissions to the receiving device; selecting a respective transmit power for each sub-band based on the determined level of wireless activity; and transmitting to the receiving device in the particular direction, using the respective selected transmit power for each sub-band.

Abstract: A method is disclosed of a transmitter configured to transmit a physical layer packet in accordance with a listen-before-talk procedure. The method includes acquiring an indication of a specific time for channel estimation, providing the physical layer packet with at least one measurement signal for channel estimation based on the specific time, and transmitting the physical layer packet. In some embodiments, the physical layer packet is provided with a plurality of midambles, wherein each midamble includes one or more measurement signals for channel estimation. In some embodiments, the physical layer packet is provided with a floating midamble which comprises one or more measurement signals for channel estimation. A method is also disclosed of a receiver configured to receive a physical layer packet transmitted in accordance with a listen-before-talk procedure.

Abstract: A wireless communication node (500) and method therein for generating and transmitting a modulated radio frequency (RF) signal by means of backscattering are disclosed. The wireless communication node (500) comprises an antenna (510) configured to receive a illuminating RF signal, a switch (520) that has M states, a set of impedances (530) comprising Mimpedances (Z1, Z2 . . . ZM). The antenna (510) is coupled to the set of impedances (530) by the switch (520). The wireless communication node (500) further comprises a modulating value generator (540) configured to generate modulating values based on data to be transmitted and a frequency offset and a switch controller (550) configured to switch the state of the switch (520) based on the generated modulating values such that the antenna (510) is connected to a selected impedance among the M impedances.

Abstract: An access point of a wireless communication system configures a carrier for communication with one or more wireless devices associated with the access point. Based on a backoff counter maintained by the access point, the access point contends for access to the carrier to transmit data. In response to another access point winning contention for access to the carrier, the access point cooperates at least with the access point winning the contention by sharing a transmission opportunity reserved on the carriers by the access point winning the contention and transmitting at least a part of the data in the shared transmission opportunity. During the shared transmission opportunity the access point pauses the backoff counter.

Abstract: Methods, apparatus and non-transitory machine-readable mediums are provided for wireless access in communications networks comprising radio access network nodes and wireless light communication network nodes. In one embodiment, a method is performed by a radio access network node for selecting a transmit or receive beam for communication with a wireless device in a communication network. The radio access network node comprises a plurality of antenna elements configurable to provide a plurality of transmit or receive beams. The communication network further comprises one or more wireless light communication, LC, network nodes.

Abstract: A method is disclosed of a transmitter configured to transmit a physical layer packet having a plurality of midambles. The method includes applying a respective phase shift for each midamble of the physical layer packet, and transmitting the physical layer packet. The respective phase shift is applied to at least a portion of symbols of the midamble. A method is also disclosed of a receiver configured to receive a physical layer packet having a plurality of midambles. The method includes receiving the physical layer packet, and counteracting a respective phase shift for each midamble of the physical layer packet. Counteracting the respective phase shift includes applying an opposite of the respective phase shift to at least a portion of symbols of the midamble or compensating the respective phase shift for at least a portion of symbols of the midamble. Corresponding apparatuses, and computer program product are also disclosed.

Abstract: Methods and apparatus are provided for transmitting a symbol from a plurality of antennas. In one example, a method comprises transmitting simultaneously, from each antenna, the symbol multiplied by a respective element of a selected column of a matrix. The number of rows of the matrix is at least the number of antennas, the number of columns of the matrix is at least 9, and the matrix comprises or is a sub-matrix of a real Hadamard matrix of maximum excess.

Abstract: A wireless transmitter (10, 11) transmits user data using Orthogonal Frequency Division Multiplexing modulation on a shared wireless medium having a bandwidth organized in multiple resource units. Based on a mapping of the user data to the resource units, the wireless transmitter (10, 11) modulates a symbol of the user data onto a first set of subcarriers of a first resource unit of the resource units and redundantly modulates the symbol onto a second set of subcarriers of a second resource unit of the resource units. The mapping of the user data to the resource units is based on possible puncturing patterns applied to the resource units.

Abstract: An access point (10) of a wireless communication system configures a carrier for communication with one or more wireless devices (11) associated with the access point (10). Further, the access point (10) contends for access to the carrier and, in response to winning contention for access to the carrier, reserves a transmission opportunity, TXOP, on the carrier. Further, the access point (10) cooperates with one or more other access points (10) of the wireless communication system by sharing the TXOP based on spatial multiplexing of wireless transmissions on the carrier.

Abstract: A wireless device (11) configures a carrier for communication with a serving access point (10). The wireless device (11) maintains a virtual carrier sense timer. The virtual carrier sense timer indicates that the carrier is to be regarded as occupied as long as the virtual carrier sense timer is not expired. The wireless device (11) receives one or more wireless transmissions on the carrier. The one or more wireless transmissions each include: an identifier commonly assigned to multiple access points which cooperate by sharing a transmission opportunity, and a duration field for indicating a duration for which the carrier is expected to be occupied. In response to the identifier matching an identifier of the serving access point (11), the wireless device (11) updates the virtual carrier sense timer according to the indicated duration. Based on the virtual carrier sense timer, the wireless device (11) controls one or more UL wireless transmissions from the wireless device (11).

Abstract: Embodiments include methods for a wireless communication device comprising a main receiver and a wake-up receiver (WUR) having a channel selective filter. Such methods include determining a correlation metric for the WUR, based on the following: a signal received via the WUR using the channel selective filter configured according to a first one of a plurality of available bandwidths, and a reference signal that is representative of a wake-up signal (WUS) transmitted by an access point node. Such methods include detecting a WUS included in the received signal based on the correlation metric in relation to a first threshold, and in response to detecting the WUS, selecting a second one of the available bandwidths for the channel selective filter, based on the correlation metric in relation to a second threshold. Other embodiments include complementary methods for an access point node, as well as apparatus configured to perform such methods.

Abstract: Methods and apparatus are provided. In an example aspect, a method in a wireless device of transmitting data on a first channel in unlicensed spectrum is provided. The method comprises determining that a transmitter is transmitting a first signal on the first channel in unlicensed spectrum, transmitting a second signal to cause the transmitter to cease transmitting the signal, and transmitting the data on the first channel in unlicensed spectrum.