Telefonaktiebolaget Lm Ericsson (publ)

Optis Cellular Technology, LLC

Unwired Planet, LLC

Other

Optis Wireless Technology, LLC

Unwired Planet International Limited

Lenovo Group Limited

Stephen J Grant

Mattias Frenne

Jung-Fu Cheng

Yi-Pin Eric Wang

Siva Dharshan Muruganathan

Robert Mark Harrison

Sebastian Faxér

Shiwei Gao

Karl James Molnar

Claes Tidestav

Leonid Krasny

Reem Karaki

Havish Koorapaty

Peter Alriksson

Yuhang Liu

Tai Do

Andreas Nilsson

Gregory Edward Bottomley

Andres Reial

Edgar Ramos

Mehrnaz Afshang

Gen Li

Karl Werner

Michael Samuel Bebawy

Andreas Höglund

Niklas Johansson

Anders Wallén

Håkan Björkegren

Ning He

Douglas Allan Cairns

Per Ernström

Stefan Parkvall

Dennis Hui

Min Wang

Kambiz Casey Zangi

Jonas B Karlsson

Gustav Almquist

Daniel Chen Larsson

Iana Siomina

Johan Rune

Ravikiran Nory

Sorour Falahati

Bo Göransson

Ali S Khayrallah

Niklas Wernersson

Emma Wittenmark

Hazhir Shokri Razaghi

Robert Baldemair

Erik Bengt Dahlman

Martin Hessler

Rajaram Ramesh

Elias Jonsson

Florent Munier

Eleftherios Karipidis

Joao Vieira

Narendar Madhavan

Muhammad Ali Kazmi

Bengt Lindoff

Jinhua Liu

George Jöngren

Johan Mikael Bergman

Torbjörn Wigren

Qingyu Miao

Konstantinos Dimou

Kumar Balachandran

Zhang Zhang

Jan Christoffersson

Lars Lindbom

Erik G Larsson

Marco Belleschi

Helka-Liina Määttanen

Imadur Rahman

Mats Fredrik Sågfors

Christian Bergljung

Johan Axnäs

Guido Roland Hiertz

Pratik Das

Anders Rosenqvist

David Sugirtharaj

Meral Shirazipour

Xinyu Gu

Tarmo Kuningas

Chester Park

Matthias Kamuf

Robert Karlsson

Tracy Lawrence Fulghum

Cagatay Konuskan

Christopher Richards

Sebastian FAXÉR

Mikael Höök

Christer Edholm

Mathias Riback

Noel Kenehan

Issa Al-Fanek

Frederik Ovesjö

Leonld Krasny

Omar Samman

Mats Sågfors

Embodiments include methods for a network node to activate semi-persistent sounding reference signal (SP-SRS) resources for transmission by a user equipment (UE). Such methods include sending, to the UE, a control message comprising configuration of a set of SP-SRS resources associated with a particular serving cell of the wireless communication network. Such methods include sending to the UE a further control message for activating the configured set of SP-SRS resources. The further control message includes information identifying an SP-SRS resource of the set of SP-SRS resources to be activated, and an indication of the identified SP-SRS resource's spatial relation with a further resource that is not associated with the particular serving cell. The indication comprising an identity of a further serving cell that is different from the particular serving cell and that is associated with the further resource. Other embodiments include complementary methods for a UE.

Cross-carrier spatial relation indication for semi-persistent sounding reference signal (SP-SRS) resources

There is described a method of operating a user equipment in a radio access network. The method comprises transmitting signaling based on a sounding reference signaling schedule, the sounding reference signaling schedule scheduling transmission of sounding reference signaling in a first time interval, wherein the first time interval overlaps, in an overlap time interval, with a second time interval, for which physical channel signaling is scheduled, wherein transmitting signaling comprises transmitting, in the overlap time interval, the physical channel signaling omitting the scheduled sounding reference signaling. The disclosure also pertains to related devices and methods.

Handling sounding reference signaling

A method of performing channel estimation for a radio channel between a transmitter and a receiver of a radio access network, RAN comprises the step of performing an initial channel estimation () of the radio channel for each of a plurality of frequency ranges (), based on a radio signal received on the radio channel from the transmitter, the radio signal comprising a signal sequence () out of the set of signal sequences () in each of the frequency ranges (), to obtain an initial channel estimate () for each frequency range (), and applying a filter () to the initial channel estimates () for the frequency ranges (), a length () of the filter () in the frequency domain being greater than lengths of the frequency ranges (), to obtain a filtered channel estimate () for all subcarriers () in the respective one of the frequency ranges ().

Channel estimation technique

Systems and methods for collection and reporting of Channel Occupancy (CO) statistics for network tuning are provided. In some embodiments, a method performed by a wireless device for tuning one or more parameters of a network comprises obtaining a configuration for CO measurement and reporting. The method also includes obtaining a plurality of CO measurements based on the obtained configuration for CO measurement and reporting. One or more of the plurality of CO measurements are obtained when a Radio Resource Control (RRC) state of the wireless device is RRC_INACTIVE or RRC_IDLE. One or more of the plurality of CO measurements are obtained when the RRC state is RRC_CONNECTED. The method also includes reporting a result of one or more of the plurality of CO measurements to a network node. This might allow improved tuning of networks such as tuning of mechanisms that are used to compensate for potential CCA/LBT failures.

Collection and reporting of channel occupancy statistics for network tuning

A method, network node and wireless device (WD) for adapting periodic configurations based on spatial relations are disclosed. According to one aspect, a method includes configuring multiple transmission resources or multiple sets of transmission occasions for a radio resource control configured periodic uplink transmission. The method further includes associating each configured uplink transmission received from the WD by the network node with a downlink reference signal, the downlink reference signal provided as a direct or indirect spatial relation reference for the uplink transmission.

Adapting periodic configurations based on spatial relations

A method, wireless device and network node are disclosed. According to one aspect, a method for a wireless device includes receiving a configuration of a reference signal resource set from the network node, the reference signal resource set being a set of single-symbol and single antenna port reference signal resources in at least one slot; and based on at least one parameter of the received configuration, determining whether the UE can assume a same antenna port for all reference signal resources of the reference signal resource set.

Methods and apparatuses for downlink tracking reference signal configuration

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 method, system and apparatus are disclosed for enabling inter carrier interference compensation for interleaved mapping from virtual to physical resource blocks. In one embodiment, a network node is configured to determine to configure the first signal to be located at a subcarrier except at an edge sub-carrier of a resource block, RB; transmit the configuration of the first signal to the WD; and receive a physical uplink shared channel, PUSCH, signaling and the first signal from the WD based at least in part on the determined configuration. In one embodiment, a WD is configured to perform a de-inter-carrier-interference (de-ICI) filter estimation on a first received signal and a second received signal; apply a de-ICI filter to a third received signal, the de-ICI filter being based on the de-ICI filter estimation; and after the application of the de-ICI filter, de-interleaved map and demodulate the third received signal.

Enabling inter carrier interface compensation for interleaved mapping from virtual to physical resource blocks

A method for accessing a cellular communications network in unlicensed spectrum is provided. More specifically, the method is related to performing a Listen-Before-Talk (LBT) procedure prior to transmitting a Physical Random Access Channel (PRACH) preamble for accessing a New Radio-Unlicensed (NR-U) network. A User Equipment (UE) first performs the LBT procedure. If the LBT procedure is successful, the UE then generates a punctured PRACH preamble and transmits the punctured PRACH preamble. By puncturing the PRACH preamble, it is possible to create a gap(s) for performing the LBT procedure in a way that is backward compatible with existing NR-U specification and does not reduce a number of random access occasions in a slot or a mini-slot. As a result, it is possible to transmit PRACH preambles in consecutive random access occasions, thus helping to increase spectrum utilization and reduce latency in the cellular communications network.

Method for accessing a cellular communications network in unlicensed spectrum

According to some embodiments, a method performed by a wireless device comprises receiving a wireless signal Rover all subcarriers allocated to the wireless device. The signal Rcomprises a phase tracking reference signal (PT-RS) on a subset of subcarriers allocated to the wireless device and the subset comprises at least one non-contiguous subcarrier. The method further comprises computing a de-inter-carrier interference (ICI) filter based on the PT-RS and a channel estimate using a convolutional matrix Cof the received signal Rand applying the de-ICI filter to the received signal Rto generate a de-ICI filtered signal.

De-ICI filter estimation for phase noise mitigation

Embodiments include methods implemented in a wireless device for reporting of a cell global identifier (CGI) in a wireless network. In one embodiment, a method comprises receiving a synchronization signal/physical broadcast channel (SS/PBCH) block from a network node; locating a control resource set (CORESET) configured by the network node through determining a frequency position of the CORESET based on a value received from the network node through radio resource control signaling; and determining and reporting the CGI to the network node based on the located CORESET. In another embodiment, the CORESET is located through testing a set of one or more reference frequency candidates from which a frequency position of the CORESET is determined.

Enhanced cell global identifier reporting

A user equipment (UE) being configured to receive a downlink (DL) information, determine a spatial association for an uplink (UL) transmission based on the DL information, and determine UL power control (PC) parameters based on the DL information.

Beam indication for uplink power control

There is disclosed a method of operating a receiving radio node in a wireless communication network. The method includes receiving signaling based on evaluating Phase Tracking Reference Signaling, PTRS, associated to the signaling, wherein evaluating is based on assuming a power level of PTRS relative to associated data signaling based on the number or PTRS ports and/or transmission sources for the signaling indicated to the receiving radio node. The disclosure also pertains to related devices and methods.

Phase tracking reference signaling for a wireless communication network

Synchronization signal and Physical Broadcast Channel, SS/PBCH, block management. A network node determines whether a network condition is met, signals to a communication terminal to apply a first detection method for SS/PBCH block detection when the network condition is determined to be met, signals to the communication terminal to apply a second detection method for SS/PBCH block detection when the network condition is determined as not met, and transmits SS/PBCH blocks according to the first or the second SS/PBCH block detection method, based on whether the network condition is met. The communication terminal receives the signalling from the network node associated with the communication network, determines whether the indicated SS/PBCH block detection method is a first or a second SS/PBCH block detection method based on the received signalling, and applies, based on the determination, the first or the second SS/PBCH block detection method for SS/PBCH block detection.

Synchronization signal / physical broadcast channel block method detection and management

Growing community of inventors

Cary, NC, United States of America

Stephen J Grant