Abstract:
The disclosure relates to an apparatus comprising at least one processor and at least one memory including computer code for one or more programs, the at least one memory and the computer code configured, with the at least one processor, to cause the apparatus at least to: configure (1300) a link to receive groupcast frames among multiple links between the apparatus and an access node apparatus; and send (1302) an indication to the access node apparatus indicating the link configured to receive the groupcast frames.
Abstract:
A transmitter is configured to set a counter to a starting value, sense whether a channel is busy or idle and to update the counter value during sensing. When there is data to be transmitted, the transmitter is configured to determine, based on at least the counter value at a transmit opportunity and a duration the channel has been sensed idle before the transmit opportunity, whether to transmit the data or to continue the sensing the channel to a next transmit opportunity without reset- ting the counter value to the starting value.
Abstract:
This document discloses a solution for performing inter-network beamforming cooperation. According to an aspect, a method comprises: establishing, by a first access node of a first wireless network, inter-network beamforming with a second access node of a second wireless network and acquiring, during the establishment, information indicating that at least one station of the second wireless network has added an identifier of the first access node to a beamforming address set; transmitting, by the first access node, an announcement frame indicating the at least one station of the second wireless network; transmitting, by the first access node, a channel sounding signal; receiving, by the first access node, a beamforming report comprising channel state information from the at least one station of the second wireless network; and performing, by the first access node, null steering beamforming transmission in the first wireless network on the basis of the received channel state information.
Abstract:
According to an example aspect of the present invention, there is provided a method, comprising: transmitting, by a first transceiver of a first radio technology, wherein a first device comprises the first transceiver, a calibration start message to a second device, transmitting a calibration message by a second transceiver of a second radio technology, wherein the first device comprises the second transceiver, receiving channel state information, by the first transceiver from the second device, wherein the channel state information is based on reception of the calibration message, determining at least one coefficient for null steering towards the second device based on the channel state information, and transmitting a directional message to a third device, using the at least one coefficient.
Abstract:
This document discloses a solution for controlling connectivity of a dormant station. According to an aspect, a method comprises: entering, by a station of a wireless network, a dormant mode in which a main radio interface of the station is disabled and a wake-up radio interface of the station is enabled; scanning, by the station, for a beacon signal by using the wake-up radio interface in the dormant mode and determining, as a result of said scanning that no beacon signal is detected; as a response to said determining, switching by the station from the dormant mode, enabling the main radio interface, and transmitting to a wireless device a frame comprising an information element indicating incapability of detecting said beacon signal; and receiving, by the station from the wireless device, a frame indicating improved conditions for detecting a further beacon signal and, upon reception of the message, returning by the station to the dormant mode.
Abstract:
A method and apparatus for detecting, by a first device, a timing measurement frame from a second device, the timing measurement frame having a plurality of time measurement samples, wherein at least the first of the measurement samples has a transmit timestamp value; determining transmit timing values for the subsequent measurement samples; applying a receive timestamp value to each of the received measurement samples; and determining a relative clock drift between a clock of the first device and a clock of the second device by comparing the receive timestamp values with transmit timing values of one or more measurement samples contained in the frame.
Abstract:
Embodiments enable access to a wireless communications medium. In example embodiments, a method comprises receiving first synchronization messages from a wireless device transmitting synchronization messages in a first neighbor awareness network cluster, the first synchronization messages including a first hop count value to a first anchor master in the first cluster and information describing a first master rank value of the first anchor master; receiving second synchronization messages from a wireless device transmitting synchronization messages in a second neighbor awareness network cluster, the second synchronization messages including a second hop count value to a second anchor master in the second cluster and information describing a second master rank value of the second anchor master; and selecting the first neighbor awareness network cluster or the second neighbor awareness network cluster, based on at least one of the first and second hop count values and the first and second master rank values.
Abstract:
This document discloses a solution for selecting a network discovery method in an apparatus. According to an aspect, the apparatus performs the following: performing initial channel assessment of a radio channel at maximum a determined time period shorter than or equal to the shortest of a plurality of discovery frame broadcast periodicities employed by access nodes the apparatus is configured to search for in network discovery; upon determining that a transmission has been detected in the initial channel assessment, selecting a network discovery according to a first network discovery method; and upon detecting no transmission on the radio channel during the initial channel assessment, selecting network discovery according to a second network discovery method different from the first network discovery method
Abstract:
An example method comprises receiving by an apparatus, a message from an access node, including at least one of a delay value indicating a duration to wait before beginning to contend for access to the wireless network by a random backoff procedure to get a transmission opportunity, and an indication whether or not the apparatus is to use a predefined delay value to wait before beginning to contend for access; determining whether to use the delay value to wait before beginning to contend for access to the wireless network; waiting for a duration represented by the delay value, when the apparatus has data to transmit over the wireless network; and beginning to contend for access to the wireless network by a random backoff procedure after the wait duration, before initiating transmission.
Abstract:
This document discloses a solution for detecting a transmission opportunity. According to an aspect, a method comprises as performed by an apparatus of a first wireless network: detecting a first transmission from a first apparatus of a second wireless network different from the first wireless network; transmitting, to a second apparatus of the first wireless network, a transmission mode request, wherein the transmission mode request indicates a request to transmit from the apparatus to the second apparatus at least during an interframe space of a transmission opportunity between the first apparatus and another apparatus of the second wireless network, receiving a transmission mode response from the second apparatus, wherein the transmission mode response indicates acceptance of the request; in response to detecting a second transmission from the first apparatus, transmitting a data frame during an interframe space following the second transmission.