Telefonaktiebolaget Lm Ericsson (Publ)

Tai Do

Peter Alriksson

Reem Karaki

Stephen J Grant

Jung-Fu Cheng

Thomas Nilsson

Havish Koorapaty

Joao Vieira

Min Wang

Amitav Mukherjee

Yu Yang

Gen Li

Yuhang Liu

Johan Rune

Leif Wilhelmsson

Narendar Madhavan

Iana Siomina

Sorour Falahati

Jan Christoffersson

Guido Roland Hiertz

Dzevdan Kapetanovic

Hazhir Shokri Razaghi

Gustav Almquist

Aliakbar Mirzaei

Systems and methods are disclosed herein that relate to frequency domain resource allocation for interlaced transmission. Embodiments of a method performed by a wireless device are disclosed. In one embodiment, a method performed by a wireless device comprises receiving a reserved resource indicator that indicates an uplink reserved resource pattern. The uplink reserved resource pattern defines at least which subset of uplink Physical Resource Blocks (PRBs) from among a set of allocated uplink PRBs are not available for uplink transmission. In this manner, a low overhead, flexible frequency domain resource allocation scheme for partial interlace transmission is provided.

Frequency domain resource allocation for interlaced transmission

Systems and methods related to partial interlace frequency domain resource allocations for uplink transmissions from a wireless device are disclosed. In some embodiments, a method performed by a wireless device comprises receiving a resource allocation for an uplink transmission that allocates resources in one or more partially allocated interlaces and performing an uplink transmission on the allocated resources in the one or more partially allocated interlaces in accordance with the resource allocation. In this manner, a low-complexity approach to support flexible frequency domain resource allocation is provided. In addition, using this approach, an interlace may be shared by two or more wireless devices, which may increase spectral efficiency and reduce latency.

Resource allocation for uplink transmissions in unlicensed spectrum

A method, system and apparatus are disclosed for transmitting feedback information when operating in unlicensed portions of the radio frequency spectrum. In one embodiment, a wireless device is configured to receive a configuration for a 5 plurality of channels, the configuration configuring each of the plurality of channels with at least one physical uplink control channel, PUCCH, resource; and transmit feedback on the at least one PUCCH resource that is configured in at least one channel of the plurality of channels. In another embodiment, a network node is configured to transmit a configuration for a plurality of channels, the configurationconfiguring each of the plurality of channels with at least one physical uplink control channel, PUCCH, resource; and receive feedback on the at least one PUCCH resource that is configured in at least one channel of the plurality of channels.

Transmit feedback for unlicensed networks

A first group embodiments provide a method performed by a network node (NN) in a wireless network comprising responsive to a DL data intended for a user equipment (UE), transmitting a first short signal burst to the UE over a channel using a directional beam, and based on detecting a first response to the first short signal burst from the UE indicating that the channel is available, transmitting at least a portion of the DL data to the UE over the channel using the directional beam. A second group embodiments provide a method performed by a NN comprising determining availability of a channel between the network node and the UE using a directional beam, based on determining that the channel is available, transmitting a first resource grant for transmission of a UL data by the UE, and receiving the UL data from the UE over the channel using the directional beam.

Receiver assisted directional channel sensing for NR-U

Systems and methods for efficient use of unlicensed spectrum are disclosed. In some embodiments, a method performed by a transmitter comprises performing a Listen-Before-Talk (LBT) procedure for a channels within a transmit bandwidth of the transmit node, where the transmit bandwidth is divided into a bandwidth parts that correspond to the channels. The method further comprises transmitting a transmission in a subset of the bandwidth parts that correspond to a subset of the channels determined, based on a result of the LBT procedure, to be available. Transmitting the transmission comprises transmitting the transmission in accordance with a transmit scheme that uses carrier aggregation and/or carrier merging to transmit the transmission on the subset of the bandwidth parts and uses resources in one or more guard bands between two or more adjacent bandwidth parts from among the subset of the bandwidth parts.

Methods for efficient use of unlicensed spectrum

A wireless device () receives a frequency resource configuration () from an access node (), the access node generates downlink control information DCI () and transmits a control message () including at least one slot format indicator, SFI, field and a frequency resource indicator field. Based on the frequency resource indicator, the wireless device determines whether a particular frequency resource is available for operation () and whether the wireless device can receive or transmit data on said frequency resource ().

DCI signalling including at least one slot format indicator, SFI, field, and a frequency resource indicator field

An example method is performed by a wireless device in a wireless communication network. The method comprises receiving, from a base station, a control message allocating resources in a bandwidth part for a downlink transmission, the bandwidth part including unlicensed spectrum and being divided into a plurality of bandwidth pieces corresponding to bandwidth units over which listen-before-talk (LBT) is performed. The radio resources used for the downlink transmissions exclude (e.g., by puncturing or rate-matching around) one or more guard bands of a bandwidth piece that is sensed as free for transmission.

Rate matching for wideband carrier operation in NR-U

Methods and systems for dynamically adapting an Energy Detection (ED) threshold for use in an unlicensed network are provided. According to one aspect, a method for dynamically adapting ED threshold for use in an unlicensed network comprises determining an ED threshold based on a current state of an unlicensed network and using the determined ED threshold for channel sensing and/or signaling the ED threshold to another entity for use during channel sensing.

Adaptive sensing mechanism for unlicensed networks

A method for use in a User Equipment configured to operate according to the New Radio (5G) standard, said method comprising: monitoring a control region for mini-slots for a transmission; detecting a start of the transmission; monitoring a control region of said transmission for regular slots; detecting that the transmission has ended; and in response thereto monitoring the control region for mini-slots again.

Control channel monitoring

A method performed by a wireless deviceis provided for receiving an uplink scheduling grant for a plurality of physical uplink shared channels (PUSCHs). The method includes receiving, from a network node, downlink control information (DCI). The DCI includes an indication corresponding to at least a time domain resource for each of the plurality of PUSCHs. Based on the indication, uplink scheduling grant resources are determined for the plurality of PUSCHs. At least one transmission is sent according to the determined uplink scheduling grant resources.

Uplink scheduling grant for a plurality of physical uplink shared channels

A method is disclosed for a wireless transceiver comprising a plurality of transceiver antenna elements and configured to operate in a communication network. The method comprises dynamically assigning (from the plurality of transceiver antenna elements) a first set of transceiver antenna elements allocated for channel sensing and a second set of transceiver antenna elements allocated for communication, performing channel sensing using the first set of transceiver antenna elements, and operating the wireless transceiver based on a result of the performed channel sensing. For example, dynamically assigning the first and second sets of transceiver antenna elements may comprise (in a non-communication mode of the wireless transceiver) letting the first set comprise all of the transceiver antenna elements and letting the second set be empty, (in a communication transmission mode of the wireless transceiver) letting the first set comprise a first subset of the transceiver antenna elements and letting the second set comprise a second subset of the transceiver antenna elements, wherein the first and second subsets are nonoverlapping, and (in a communication reception mode of the wireless transceiver) letting the first set comprise a third subset of the transceiver antenna elements and letting the second set comprise a fourth subset of the transceiver antenna elements, wherein the third and fourth subsets are non-overlapping or overlapping. Corresponding apparatus, wireless transceiver, access node, user device and computer program product are also disclosed.

Assignment of transceiver antenna elements for channel sensing

A method, wireless device, and network node for increasing the capacity on a control channel when using Frequency Division Multiplexing (FDM) of data and DMRS are disclosed. According to one aspect, a wireless device (WD) is configured to perform intra-symbol frequency division multiplexing of data subcarriers and demodulation reference signal, DMRS, subcarriers. The WD is also configured to apply intra-symbol orthogonal cover codes, OCCs, to the data subcarriers. The WD is further configured to apply intra-symbol cyclic shifts to the DMRS subcarriers.

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Lund, Sweden

Tai Do