Telefonaktiebolaget Lm Ericsson (publ)

Optis Cellular Technology, LLC

Johan Rune

Icaro L J Da Silva

Gunnar Mildh

Andres Reial

Joachim Sachs

Jari Tapio Vikberg

Henrik Sahlin

Pål Frenger

Erik A Eriksson

Rui Fan

Claes Tidestav

Pradeepa Ramachandra

Qingyu Miao

Stefan Wager

Kumar Balachandran

Janne Peisa

Dennis Hui

Magnus Stattin

Martin Hessler

Karl Norrman

Qianxi Lu

Tomas Nylander

Robert Baldemair

Bengt Lindoff

Fredrik Gunnarsson

Stefan Parkvall

Jinhua Liu

Yi-Pin Eric Wang

Erik Bengt Dahlman

Sven Oscar Petersson

Joakim Axmon

Johan Torsner

Fredrik Athley

Gabor Fodor

Ali S Khayrallah

Gen Li

Walter Müller

Sorour Falahati

Leif Wilhelmsson

Min Wang

Jung-Fu Cheng

Havish Koorapaty

Robert Mark Harrison

Henning Wiemann

Paul Schliwa-Bertling

Stephen J Grant

Konstantinos Dimou

Muhammad Ali Kazmi

Iana Siomina

Oumer Teyeb

Mattias Bergström

Jose Luis Pradas

Pontus Wallentin

Zhang Zhang

Patrik Rugeland

Niclas Wiberg

Lars Westberg

Peter Alriksson

Torgny Palenius

Dinand Roeland

Thorsten Lohmar

Bo Hagerman

Lars Lindbom

Osman Nuri Can Yilmaz

Jonas Fröberg Olsson

Johan Furuskog

Niklas Johansson

Jianfeng Wang

Hai Feng Wang

Zhan Zhang

Lars Sundström

Andreas Bergström

Henrik Asplund

Martin Johansson

Karl Werner

Mikael Coldrey

Patrik Torgny Karlsson

Mårten Ericson

Anders Furuskär

Reem Karaki

Jens Bergqvist

Jan Christoffersson

Anders Wallén

György Miklós

Attila Mihály

Erik G Larsson

Marco Belleschi

Riikka Susitaival

Michael Meyer

Johan Nilsson

Zhipeng Lin

Henrik Enbuske

Arne Simonsson

Yutao Sui

Niklas Andgart

Helka-Liina Määttanen

Panagiotis Saltsidis

Emre Yavuz

Santhan Thangarasa

Ying Sun

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

Buffer Status Reports (BSR), by which the network is made aware of uplink transmission needs of wirless devices, are specifically enabled to be transmitted using 2-step Random Access (RA), to reduce latency and network resource use. In one embodiment, 2-step RA configurations tailored to BSR-transmissions are introduced. These may, for example, use a subset of the configured resources in the configured 2-step RA resources for BSR. In another embodiment, conditions for triggering BSR over 2-step RA, depending on the traffic, are introduced. For example, the priority or the the delay budget of the traffic may be used to determine whether a BSR over 2-step RA should be triggered. In another embodiment, simplified procedures when receiving the response to MsgA are introduced. These may include, for example, not transmitting a full MsgB, but rather having the UE receive an UL grant.

Efficient buffer status reporting over 2-step RA

Various embodiments of the present disclosure provide a method for random access. The method which may be performed by a terminal device comprises performing a transmission of a message to a network node in a random access procedure. The transmission of the message may comprise transmission of a preamble and transmission of a payload on a shared channel. The method further comprises receiving a response message from the network node. In response to the response message, the terminal device may perform a retransmission of the payload on the shared channel to the network node according to retransmission configuration.

Method and apparatus for random access

Systems and methods are disclosed herein for Quality of Experience (QoE) measurements handling at overload in a Radio Access Network (RAN) of a cellular communications system. In one embodiment, a method performed by a first RAN node for handling QoE measurement configuration and/or reporting during RAN overload comprises performing one or more actions related to one or more aspects of QoE measurement configuration, QoE measurement reporting, or both QoE measurement configuration and QoE measurement reporting that mitigate an RAN overload condition. In one embodiment, performing the one or more actions comprises performing one or more actions related to transfer of one or more aspects of QoE measurement configuration from the first RAN node to a second RAN node, transfer of one or more aspects of QoE measurement reporting from the first RAN node to the second RAN node, or both.

QoE measurement handling at overload in RAN

A method performed by a source access node for performing data forwarding at handover of a UE from a source cell to a target cell in a wireless communications network is provided. When a criterion for data forwarding is fulfilled, the source access node obtains a trigger for downlink data forwarding. When receiving the trigger, the source access node initiates downlink data forwarding to the UE via the target access node.

Access node, user equipment and methods in a wireless communications network

Embodiments herein relate to a method performed by a network node for handling communication in a wireless communication network comprising a first radio network node and a second radio network node providing dual connectivity to a UE (). The network node calculates an average delay of a packet transmission, wherein weighting is applied to a number of packets respectively sent via the first radio network node and the second radio network node when no packet duplication is applied, and wherein weighting is further applied for a respective delay calculation for one or more periods or packets with duplication, and the periods or packets without duplication.

Radio network node, network node, and methods performed in a wireless communication network

Methods and apparatus in a fifth-generation wireless communications, including an example method, in a wireless device, that includes receiving a downlink signal comprising an uplink access configuration index, using the uplink access configuration index to identify an uplink access configuration from among a predetermined plurality of uplink access configurations, and transmitting to the wireless communications network according to the identified uplink access configuration. The example method further includes, in the same wireless device, receiving, in a first subframe, a first Orthogonal Frequency-Division Multiplexing (OFDM) transmission formatted according to a first numerology and receiving, in a second subframe, a second OFDM transmission formatted according to a second numerology, the second numerology differing from the first numerology. Variants of this method, corresponding apparatuses, and corresponding network-side methods and apparatuses are also disclosed.

Network architecture, methods, and devices for a wireless communications network

Embodiments herein relate to for example a method performed by a radio network node for handling a communication of a user equipment, UE, in a wireless communication network. The radio network node transmits a handover command for handing over the UE, from a source cell to a target cell, wherein a security parameter for encrypting data communicated between the radio network node and the UE is retained during the handover. Furthermore, the radio network node maintains a sequence number status for reception and/or transmission of a signalling radio bearer of the UE during the handover from the source cell to the target cell, and/or at a fallback from the target cell to the source cell, when the UE triggers the fallback to the source cell.

Radio network node, user equipment (UE) and methods performed therein

Systems and methods related to balancing random access resources between 2-step Random Access Channel (RACH) and 4-step RACH. In one embodiment, a method performed by a first network node comprises obtaining information related to 2-step RACH and/or 4-step RACH, for cell(s) and/or beam(s) controlled by the first network node. The method further comprises determining, based on the obtained information, first assistance information for 2-step and/or 4-step RACH configuration, for the cell(s) and/or the beam(s) controlled by the first network node. The method further comprises transmitting, to a second network node, second assistance information for the 2-step and/or 4-step RACH configuration, for the cell(s) and/or the beam(s) controlled by the first network node. The second assistance information comprises the first assistance information or information that indicates one or more parts of the first assistance information.

Balancing RA resources between 2-step RACH and 4-step RACH

Techniques are provided to enable use of more than two preamble group Bs during random access (RA) for connected UEs. This flexibility is achieved by configuring the active BWP to overlap with the 2-step RA resources on the initial BWP, configuring different sizes of preamble group B in the initial BWP and the active BWP, a allowing connected UEs in the active BWP to use the MsgA PRACH and MsgA PUSCH resources in the initial BWP without switching active BWP.

Random access resource configuration in different bandwidth parts for two-step random access

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

A method is provided for use in a network node in wireless communications network. The method includes determining, a plurality of transmission opportunities, TXOPs, in which to attempt to transmit a paging signal in a plurality of beams. The plurality of beams have a beam order. The method further includes assigning a predetermined number of the plurality of TXOPs to each beam of the plurality of beams, wherein none of the TXOPs is assigned to more than one beam. The method further includes performing at least one clear channel assessment, CCA, before transmitting the paging signal in one of the TXOPs. The method further includes transmitting the paging signal in a first beam of the plurality of beams using one of the plurality of TXOPs assigned to the first beam based on a first successful CCA covering the used TXOP.

Handling multiple transmission opportunities in a paging occasion

The disclosure relates to a method in a wireless device for transmitting an uplink signalling message in a wireless communication network. The wireless device is connected to a first network element over at least a first and a second wireless link. The method comprises determining a transmission mode among alternative transmission modes for transmitting the uplink signalling message. The alternative transmission modes comprise: transmitting on the first wireless link; transmitting on the second wireless link; and transmitting on both the first and the second wireless links. The method also comprises transmitting the uplink signalling message according to the determined transmission mode. The disclosure also relates to a corresponding method performed in the network element, and to the corresponding apparatus.

Uplink signaling for dual connectivity

Embodiments herein relate, e.g., to a method performed by a wireless device for handling communication in a wireless communication network. The wireless device transmits to a radio network node, a first preamble associated with a selected downlink beam. The wireless device further monitors for a random access response, RAR, in a first RAR reception window and when the RAR is not received in the first RAR reception window, monitors for the RAR in a second RAR reception window of a different beam or to transmit, to the radio network node, a second preamble associated with a second beam wherein the first preamble is associated with a channel state information reference signal and the second preamble is associated with a synchronization signal block.

Radio network node, wireless device, and methods for performing random access in a wireless communication network

A method performed by a node, for handling beamforming beams. The node operates in a wireless communications network. The node establishes that at least two beams in a first set of beams transmitted by one or more first radio network nodes are overlapping. The establishing is based on information comprising at least one of: i) a first indication of a first result of one or more measurements performed by one or more wireless devices on the first set of beams, and ii) a report having a second result of a determination that the at least two beams in the first set of beams are overlapping. The node also provides a second indication to at least one of: the node, the one or more second radio network nodes, and the one or more wireless devices. The second indication is based on the established overlap.

First node, wireless device and methods performed thereby, for handling beamforming beams

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Lidingö, Sweden

Johan Rune