Abstract: In a wireless communication system, an access point (10) contends with at least one further access point (10) for a set of transmission resources. In response to winning contention for the set of transmission resources, the access point (10) shares at least a subset of the transmission resources with the at least one further access point (10). In addition, the access point (10) exchanges information with the at least one further access point (10). Based on the exchanged information, the access point (10) coordinates wireless transmissions on the shared subset of transmission resources.

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: The invention relates to a method for a wireless communication apparatus, and such an apparatus, configured to use a wake-up signal (WUS), transmitted for waking up a main receiver of a wireless communication device responsive to detection of the WUS by a wake-up receiver (WUR) of the wireless communication device. The method comprises controlling a bandwidth associated with the WUS based on a reception condition metric for the WUR. Embodiments may comprise determining the reception condition metric for the WUR by correlating a received signal comprising the WUS with a WUS reference signal to provide an extreme correlation value, and determining the reception condition metric for the WUR based on the extreme correlation value. In some embodiments, controlling the bandwidth associated with the WUS based on the reception condition metric may comprise controlling a WUS bandwidth based on the reception condition metric.

Abstract: A method of wirelessly providing a multiplexed wake-up packet for waking up a plurality of wireless communication receivers from a low-power state to a normal state is provided. The multiplexed wake-up packet comprises a composite of individual wake-up packets, wherein each individual wake-up packet is addressed to one of the plurality of wireless communication receivers. The method comprises determining a number N of individual wake-up packets of the multiplexed wake-up packet, determining a time offset To(n) for each of the individual wake-up packets, where n=1 . . . N, generating the multiplexed wake-up packet as a time domain multiplexed signal comprising all the N individual wake-up packets with the time offsets To(n), and transmitting the multiplexed wake-up packet. A network node is arranged to perform the method.

Abstract: The invention relates to assigning a beam pattern with null-steering beamforming from a first radio network node. A method includes determining a direction to a neighbouring second radio network node, determining an indication on traffic load for the second radio network node, and determining, from the direction and traffic load, a direction for a null of the null-steering beamforming. A computer program and a radio network node are also disclosed.

Abstract: A method of a first access point and an access point arranged to provide wireless communication access for a wireless communication system are disclosed.

Abstract: A method of transmitting an Orthogonal Frequency Division Multiplexing, OFDM, symbol having a guard interval including a cyclically repeated part of an original symbol comprises applying a guard interval for the OFDM symbol, the guard interval including a first part, where the first part is a cyclic prefix, including an indication whether the applied guard interval has a second part, wherein the second part is a cyclic prefix and/or postfix, applying, when indicated to be present, the second part of the guard interval, and transmitting the OFDM symbol. A method of receiving the symbol, transmitter, receiver and computer programs for implementing the methods are also disclosed.

Abstract: A packet format is disclosed for transmission of data packets over a communication channel, wherein transmission of one of the data packets utilizes a frequency bandwidth, and wherein the frequency bandwidth is dynamically variable between data packets. The packet format defines a frequency bandwidth detection field, wherein the frequency bandwidth detection field of a data packet has a first field content or a second field content, and wherein corresponding parts of the first and second field contents are orthogonal to each other. The first field content is indicative of that transmission of the data packet utilizes a first frequency bandwidth and the second field content is indicative of that transmission of the data packet utilizes a frequency bandwidth which is larger than the first frequency bandwidth. Corresponding methods and apparatuses for transmission/reception of data packets are also disclosed.

Abstract: In one example aspect, a method of transmitting signals is provided. The method comprises transmitting a first multi-carrier on-off keyed signal comprising a plurality of on periods and a plurality of off periods. Transmitting the first signal in each on period comprises, for each subcarrier of a plurality of subcarriers, transmitting, from each antenna of a plurality of antennas, a frequency domain symbol associated with that subcarrier phase shifted by a respective factor of a set of factors associated with that subcarrier, wherein the set of factors associated with that subcarrier is different from the set of factors associated with at least one other subcarrier of the plurality of subcarriers.

Abstract: A method is performed by a wireless transmitting device for a communication network. The communication network implements a standard in which transmitting devices contend for access to a wireless transmission medium, a transmitting device being permitted to transmit using the wireless transmission medium for a window of time upon winning contention. The method includes initiating a first, initial transmission to one or more wireless receiving devices in the window of time, the first transmission including a first preamble; and, subsequent to the first transmission, initiating a second transmission to one or more wireless receiving devices in the window of time, the second transmission including a second preamble which is shorter than the first preamble, or including no preamble.

Abstract: A method for operating an access point providing access to a wireless network for a plurality of wireless devices, wherein the wireless network includes at least one transmission channel with a sequence of transmission slots. The method includes assigning a first transmission slot to a first wireless device for a scheduled transmission with a priority access to the first transmission slot for the first wireless device, detecting during the first transmission slot that the first wireless device is currently not transmitting data in the assigned first transmission slot, and transmitting an indication to at least a subset of the plurality of wireless devices indicating that at least a time range in the first transmission slot until an end of the first transmission slot is available to the plurality of wireless devices for a data transmission using a random access procedure.

Abstract: A method for a primary wireless transmitter is disclosed. The primary wireless transmitter is configured to participate in transmission to a wireless receiver using spatial multiplexing in coordination with one or more secondary wireless transmitters. The method comprises assigning—from a collection of available channel sounding resources—respective channel sounding resources to the primary wireless transmitter and to the one or more secondary wireless transmitters, wherein each available channel sounding resource is assigned to at most one of the wireless transmitters. Each assigned respective channel sounding resource is for transmission of a respective non-spatial-multiplexed first channel sounding signal, and the first channel sounding signals are for phase tracking of signals transmitted by the primary wireless transmitter and/or for phase tracking of signals transmitted by the one or more secondary wireless transmitters.

Abstract: A method is performed by a network node of a communication network. The communication network comprises a plurality of coordinated radio access network nodes for transmitting multiple streams of data to a wireless device in a given time resource. The method comprises: causing transmission, to the wireless device, of an indication that the wireless device should perform multiple separate phase-tracking processes on the signals received from the plurality of coordinated radio access network nodes in the given time resource.

Abstract: In one aspect, a method for detecting changes in distance between a first wireless device and a second wireless device is provided. The method comprises determining a variation of a parameter over time, based on measurements of first timing signals transmitted between the first and second wireless devices. The variation of the parameter depends on a distance between the wireless devices, and comprises periodic step transitions as a result of relative clock drift between the wireless devices. The method further comprises predicting a time at which a periodic step transition is expected to occur based on the variation of the parameter, and determining a value of the parameter based on measurements of second timing signals. In response to a determination that the determined value of the parameter differs from an expected value of the parameter, it is determined that the distance between the wireless devices has changed.

Abstract: An approach for transmission provides a method of enabling Hybrid Automatic Request, HARQ, in an IEEE 802.11 communication. The method includes transmitting, in an element in a Block Acknowledgement, BA, setup of a Medium Access Control, MAC, message, which element indicates a request to use HARQ, receiving a response to said request, and starting to apply HARQ. The approach includes a network entity of a wireless network using IEEE 802.11. The network entity includes a transmitter arranged to transmit, in an element in a Block Acknowledgement, BA, setup of a Medium Access Control, MAC, message, which element indicates a request to use HARQ, a receiver arranged to receive a response to said request, and a communication handler arranged to start to apply HARQ.

Abstract: A transceiver device includes a controller arranged to identify a first set of control information within the data packet, and to re-map the data packet such that the first set of control information is mapped on bits known to be more robust. The transceiver device further includes a transmitter arranged to transmit the re-mapped data packet. The first set of control information holds information which enables for identification to combine soft bits from repeated transmissions at a receiver of the packet. The bits known to be more robust have more distinct value distribution in signal space of a used modulation and coding scheme than other bits. The transceiver device is arranged to transmit a data packet. A corresponding method, computer program, access point and station are also disclosed.

Abstract: A method performed by a first Station (STA) for any one out of: transmitting Narrow Band (NB) signals to, and receiving NB signals from, second STAs in a Wireless Local Area Network (WLAN) is provided. The STA performs one or more out of: Transmitting (1001) the NB signals to the second STAs, and receiving (1002) the NB signals from the second STAs. The NB signal symbol boundaries are aligned in time with symbol boundaries of a Wide Band (WB) signal transmitted by any one out of the first STA and another STA. The NB signals start with a preamble comprising an NB-Short Training Field (STF) followed by a NB-Long Training Field (LTF). The NB LTF and NB STF are designed to avoid interference between the NB signals and WB signals.

Abstract: A receiver receives binary information from a transmission using a binary amplitude shift keying where information symbols are represented by a signal including a first power state and a second power state. A duration of a bit includes a first part where the second power state is applied irrespective of which binary value is represented, and a second part where a binary value is represented by any of the first power and a third power state or a combination pattern of the first power state and the third power state. A sampling circuit is arranged to retrieve samples of the received signal during the second part and discard samples during the first part. A duration of the retrieving of samples is selected to be a time corresponding to the duration of the second part plus a time based on an expected synchronization error.

Abstract: Methods for facilitating positioning determination in a Wi-Fi communication network are disclosed. An example method comprises sending, to a responding communication node, a request to start a position-related determination procedure and information of a first plurality of frequency bands over which the initiating communication node is able to communicate. The method further comprises receiving, from the responding communication node, second information related to a second number of frequency bands over which the responding communication node is able to communicate, and triggering start of the position-related determination procedure based on the received second information so that the position-related determination procedure is performed over at least one of a third number of frequency bands that occurs in both the first plurality of frequency bands and the second number of frequency bands.

Abstract: Methods are disclosed for communication devices capable of simultaneous transmission and reception, wherein a first method is for reception of a packet comprising a header and a payload and a second method is for transmission of a packet comprising a header and a payload. The second method comprises transmitting at least a part of the header. The first method comprises receiving at least a part of the header, attempting to decode the part of the header, and (when the part of the header is successfully decoded) transmitting a header acknowledgement signal. The second method comprises monitoring receipt of a header acknowledgement signal, and (when absence of the header acknowledgement signal is detected) interrupting the transmission of the packet and scheduling the packet for retransmission. Corresponding apparatuses, transceivers, communication devices and computer program products are also disclosed.