Nokia Technologies Oy

Alcatel Lucent

Nokia Solutions and Networks Oy

Lorenzo Galati Giordano

Adrian Garcia Rodriguez

Giovanni Geraci

David Lopez-Perez

Mika Kasslin

David Lopez Perez

Olli Alanen

Andrea Bonfante

Claudio Rosa

Nuno Manuel Kiilerich Pratas

Tao Tao

Yan Meng

Nuno Pratas

Paolo Baracca

Michael Timmers

Nikolas Olaziregi

David Lopez-perez

A node configured to support a method of communicating between two nodes in the unlicensed spectrum is disclosed where a channel can be simultaneously used for downlink and uplink communication. The method performed at a node involves assessing at that node, for example, a UE, that there is a transmission to be made to a further node, for example a gNB. The first node receives an indication that communication with the further node is supported on a channel within an unlicensed spectrum using flexible frequency division duplex (FDD) techniques. The first node determines whether transmission by the further node is being made within a first portion of the channel within the unlicensed spectrum; and if so, transmits to the further node within a second portion of the channel which does not overlap with the first.

Communication in the unlicensed spectrum

This document discloses a solution for decoding frames received via multiple links. According to an aspect, a method for an apparatus of a wireless network includes: decoding at least a first part of a first frame received on a first channel; detecting, during said decoding the first part of the first frame, transmission of a second frame on a second channel; in response to said detecting, buffering at least a first part of the second frame, the first part of the second frame including duration information; after said decoding the first part of the first frame, decoding at least the first part of the second frame; updating, on the basis of the duration information, channel occupation information of the second channel; starting, based at least partly on the channel occupation information of the second channel indicating that the second channel not occupied, contention for channel access on the second channel.

Channel sensing in multi-link capable wireless device

According to an example aspect of the present invention, there is provided a method, comprising: receiving from a first wireless device a first transmission comprising information on beamforming and/or null steering for a second transmission from the first wireless device, and controlling a third transmission from a second wireless device to a third wireless device during the second transmission on the basis of the information on beamforming and/or null steering.

Spatial reuse for wireless network

According to an example aspect of the present invention, there is provided a method, including receiving, by a wireless device of a first wireless network, a control request frame from a second access node of a second wireless network, the control request frame including at least a number of nulls for the wireless device. The wireless device selects a subset of antenna elements, wherein the number of antenna elements is in accordance with the number of nulls for the wireless device, and the antenna elements are selected based on reception powers of antenna elements of at least a frame from a first access node of the first wireless network and/or the second access node of the second wireless network. The wireless device transmits a control response frame with the selected antenna elements, and a data frame to the first access node with the selected antenna elements.

Example embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable storage media of channel coordination in the unlicensed spectrum. The method comprises receiving, at a first device and from a plurality of second devices, information about carrier sensing to be performed by the plurality of the second devices; determining a transmission pattern for a target second device of the plurality of the devices based on the information about the carrier sensing and information about time sensitive traffic of the plurality of the second devices, the transmission pattern including at least a sensing period for transmission of time sensitive traffic of the target second device and a muting period of the target second device; and transmitting a first message indicative of the transmission pattern to the target second device. In this way, the interoperability of the TSN network device and the normal network device can be efficiently improved in an industrial automation scenario. By controlling the access/transmission of the TSC traffic in the TSC dedicated transmission period, the TSC traffic of the target network device can be protected and the latency requirements can be satisfied.

Time sensitive communication

This document discloses a solution for sharing a transmission opportunity in a wireless network. According to an aspect, a method for an apparatus of a first wireless network includes determining a plurality of devices of a second wireless network for null steering; transmitting a trigger frame, the trigger frame indicating a transmission period for data frame transfer between the apparatus and another apparatus of the first wireless network, a spatial reuse opportunity for the second wireless network during the transmission period, and an additional period preceding the transmission period; receiving, from at least one device of the second wireless network during the additional period, a channel state frame; and performing, based on the channel state frame, null steering towards the at least one device during the transmission period.

Sharing transmission opportunity with beamforming

A method comprising determining that interference may occur in a wireless network an apparatus is connected to, obtaining a first link that is of a first type, obtaining a second link that is of a second type, determining data to be transmitted from the apparatus to another apparatus connected to the wireless network, determining that a transmission occurs in the first link and transmitting the data in the second link, wherein the transmission in the first link has a longer duration than transmitting the data in the second link and the transmission in the first link and transmitting the data in the second link overlap in time.

Ensuring transmissions are completed in a wireless network

A base station for a multiple-input, multiple-output (MIMO) array receives a message that includes information identifying the transmitting and receiving nodes. Based on whether the base station has access to up-to-date channel covariance matrices for the nodes, the base station selectively performs a clear channel assessment in an unlicensed frequency band concurrently with placing nulls in directions associated with the nodes. In some cases, the up-to-date channel covariance matrices are used to place nulls in the directions associated with the nodes concurrently with performing the clear channel assessment in response to the up-to-date channel covariance matrices being available to the base station. Placement of nulls in the directions associated with the nodes is bypassed in response to the up-to-date channel covariance matrices not being available to the base station.

Hidden node discovery for multiple-input-multiple-output (MIMO) in unlicensed frequency bands

A method of scheduling user equipment, a multiple antenna network node and computer program are disclosed. The method comprises: estimating at least one access network node channel within the unlicensed band between at least one access node operable to transmit in the unlicensed band, such as a WiFi Access Point, and the multiple antenna network node. Estimating a plurality of user equipment channels within the unlicensed band between a plurality of user equipment and the multiple antenna network node. Determining a degree of channel correlation of each of the plurality of user equipment channels and the at least one access node channel. Selecting at least one of the multiple user equipment to be scheduled, using the degree of channel correlation as a selection parameter, a lower degree of channel correlation increasing a user equipment's chance of being selected. In this manner the interference that LTE transmissions from and to scheduled UEs create on the at least one access node is reduced.

Scheduling user equipment in the unlicensed band

A method for modifying an electromagnetic field distribution of a node in a telecommunication network, comprising determining the presence of an entity within a region of interest, and regulating transmission power to the region of interest from the node by varying a spatio-temporal transmission profile of the node in response to determining the presence of the entity in the region for a period of time longer than a predetermined threshold value, wherein modifying the electromagnetic field distribution of the node comprises modifying an average electromagnetic field distribution of said node.

Regulating transmission powers from nodes

A multiple input multiple output network node, an access network node, a computer program and method are disclosed. The method comprises prior to transmitting signals in an unlicensed band: estimating at least one channel within the unlicensed band between at least one access network node operable to transmit in the unlicensed band and the multiple input multiple output network node; determining precoding operations required to generate a null signal beam for the at least one estimated channel; monitoring the unlicensed band using the determined precoding operations. In response to detecting the unlicensed band to be clear of signals: transmitting at least one signal in the unlicensed band with the null beam in place such that no signal is transmitted on the at least one estimated channel.

Sharing resources in an unlicensed frequency band

Method for managing a wireless passive optical network, including a plurality of access points, APs, and a plurality of customer premises equipments, CPEs. The method includes configuring an AP to CPE association based on a load balancing algorithm such that each CPE is associated with at least one AP; configuring for each AP an AP beamforming codebook based on the configured association, wherein the AP beamforming codebook includes entries, wherein each entry is representative for a beam pattern to be transmitted by the AP, and wherein the AP beamforming codebook includes for each CPE associated with the AP&#x2014;a line of sight, LoS, entry representative for a beam pattern to be transmitted to the respective CPE via a LoS path; and at least one back-up entry representative for a beam pattern to be transmitted to the respective CPE via a back-up path different from the LoS path.

Method for managing a wireless passive optical network

A node is configured for connection to a massive multiple-input, multiple-output (MIMO) array to provide spatially multiplexed channels in an unlicensed frequency band. The node includes a memory configured to store samples of non-spatially filtered signals received by the node during a first listen-before-talk (LBT) operation used to acquire the unlicensed frequency band. The node also includes a processor configured to determine, based on a number of previously stored samples, a duration of a silent time interval during which the node collects samples of non-spatially filtered signals and stores the samples in the memory. The node further includes a transceiver configured to perform a second LBT operation to acquire the unlicensed frequency band using a spatial filter determined based on the samples stored in the memory.

Adaptive allocation of temporal resources for massive multiple-input-multiple-output (MIMO) in unlicensed frequency bands

A node is configured to be connected to a massive multiple-input, multiple-output (MIMO) array to provide spatially multiplexed channels to a plurality of user equipment in an unlicensed frequency band. The node includes a processor configured to allocate a number of degrees of freedom of the massive MIMO array to interference suppression based on an outcome of a first listen-before-talk (LBT) operation performed by the node to acquire the unlicensed frequency band. The processor is also configured to generate a spatial filter based on the number of degrees of freedom allocated to interference suppression. The node also includes a transceiver configured to perform a second LBT operation using the spatial filter.

Growing community of inventors

Blanchardstown, Ireland

Lorenzo Galati Giordano