Telefonaktiebolaget Lm Ericsson (publ)

Mats Folke

Jan Christoffersson

Min Wang

Stefan Wänstedt

Stefan Wager

Henrik Enbuske

Jinhua Liu

Torsten Dudda

Emre Yavuz

Yunxi Li

Marco Belleschi

Pontus Wallentin

Stefan Parkvall

Henrik Sahlin

Magnus Stattin

Angelo Centonza

Gunnar Bergquist

Stefano Sorrentino

Henning Wiemann

Patrik Rugeland

Johnny Karout

Robert Baldemair

Daniel Chen Larsson

Fredrik Gunnarsson

Havish Koorapaty

Sorour Falahati

Qianxi Lu

Xinghua Song

Gustav Wikström

Helka-Liina Määttänen

Malik Wahaj Arshad

Tao Cui

Sara Landström

Robert Karlsson

Muhammad Ali Kazmi

Mattias Frenne

Gunnar Mildh

Icaro L J Da Silva

Yi-Pin Eric Wang

Joakim Axmon

Siva Dharshan Muruganathan

Yu Yang

Mattias Bergström

Janne Peisa

Andreas Höglund

Olof Liberg

Yutao Sui

Riikka Susitaival

Alexander Vesely

Ali Zaidi

Martin Van Der Zee

Eric Andersson

Jung-Fu Cheng

Iana Siomina

Ghyslain Pelletier

Robert Mark Harrison

Shiwei Gao

Sebastian Faxér

Oumer Teyeb

Konstantinos Dimou

Walter Müller

Claes Tidestav

Shaohua Li

Lars Lindbom

Monica Wifvesson

Jose Luis Pradas

Noamen Ben Henda

Helka-Liina Määttanen

Vesa Lehtovirta

Santhan Thangarasa

Prajwol Kumar Nakarmi

Christofer Lindheimer

Harald Kallin

Vesa Torvinen

Elena Myhre

Jörg Huschke

Mikael Wittberg

Sven Harald Ekemark

Parisa Pakniat

Samuel Axelsson

Helka-Liina Maattanen

Erik Stare

Sebastian FAXÉR

Jose Angel Leon Calvo

Ratheesh Kumar Mungara

Mats Nordberg

A wireless device configured to perform a 2-step random access, RA, procedure transmits () a message according to the 2-step RA procedure, the message comprising a first random access preamble. The wireless device receives (), during a RA response window following the transmitting of the message, a Medium Access Control, MAC, subheader. Using one or more bits or fields included in the received subheader, the wireless device determines () that it should take action according to any one of the following: backing off, according to a back-off parameter, for a subsequent RA attempt according to the 2-step RA procedure; falling back to a 4-step RA procedure by transmitting a new RA preamble; and falling back to a 4-step RA procedure after backing off according to a back-off parameter, by transmitting a new random access preamble after the back-off.

Back-off for 2-step RA procedure

A method in a UE comprises: receiving a message from a network node comprising information about one or more sets of dedicated random access channel (RACH) resources, each set of dedicated RACH resources associated with a beam associated with a target cell; obtaining an estimate of beam quality for each beam associated with the sets of dedicated RACH resources; determining, based on the obtained estimate of beam quality, whether any beam associated with the one or more sets of dedicated RACH resources meets one or more criteria of a first set of criteria for performing random access; and performing random access based on whether any beam associated with the one or more sets of dedicated RACH resources meets the one or more criteria of the first set of criteria for performing random access.

Multi-beam random access procedure in handover execution

A user equipment starts a first timer and a second timer in response to different respective network events. The starting of the first and second timers causes the first and second timers to simultaneously elapse. In response to one of the simultaneously elapsing timers expiring, the user equipment indicates, to a network node, which of the simultaneously elapsing timers expired.

Mobility robustness in a cellular network

Embodiments include methods, performed by a user equipment (UE), for hybrid ARQ (HARQ) feedback in relation to multicast transmissions from a network node in a radio access network (RAN). Such methods include receiving, from the network node, first downlink control information (DCI) scheduling a first multicast transmission associated with the UE and determining a HARQ feedback mode for the first multicast transmission. Such methods also include, based on the first DCI, attempting to decode the first multicast transmission; and selectively transmitting HARQ feedback related to the first multicast transmission to the network node based on the determined HARQ feedback mode and on whether the attempt to decode is successful or unsuccessful. Embodiments also include complementary methods for a network node, as well as UEs and network nodes configured to perform such methods.

Hybrid automatic repeat request (HARQ) mechanism for multicast in NR

In one aspect, a method performed by a wireless device for obtaining information about Physical Uplink Control Channel (PUCCH) resources is provided. The method includes receiving a Medium Access Control (MAC) Control Element (CE) from a network, wherein the MAC CE contains respective spatial relation information relating to PUCCH resources configured for at least one specific bandwidth part. In a further aspect, a wireless device for obtaining information about PUCCH resources is provided. The wireless device includes power supply circuitry configured to supply power to the wireless device and processing circuitry configured to cause the wireless device to receive a MAC CE from a network, wherein the MAC CE contains respective spatial relation information relating to PUCCH resources configured for at least one specific bandwidth part.

Indication of spatial relation for PUCCH

According to some embodiments, a method of operating a network node is provided. A first information element IE is provided including an indication of an added synchronization signal block/physical cell identity SSB/PCI. The indication of the added SSB/PCI indicates an SSB and associated PCI that are associated with a radio link. A second IE is provided including the indication of the added SSB/PCI. The second IE relates to at least one of channel state information CSI, radio link monitoring, uplink power control, and/or uplink spatial relations. A control message including the first IE and the second IE is transmitted to a user equipment UE, to enable the UE to perform a radio link monitoring function on the radio link.

Methods of configuring SSB/PCI for use by a UE and related user equipment and network nodes

A network node () and a method for transmitting uplink grants to a communications device (), wherein the communications device operates in a service area () served by the network node. The network node determines, based on a load measure on a Physical Random Access Channel, PRACH, between the network node and the communications device in relation to a load threshold, a number of uplink grants that are to be associated with a Random Access Preamble Identity, RAPID, of a PRACH preamble transmission received from the communications device. Further, the network node indicates the determined number to the communications device; and transmits the determined number of uplink grants to the communications device.

Network node, a communications device and methods therein for transmission of uplink grants

A terminal device for a wireless communication network is configurable with a plurality of transmission time intervals. An example method comprises: receiving a grant message comprising an indication of radio resources in which the terminal device can transmit one or more wireless messages, the radio resources being configured according to a first transmission time interval of the plurality of transmission time intervals; determining the presence of data to transmit, the data being associated with a logical channel; determining a maximum transmission time interval associated with the logical channel; and, responsive to a determination that the maximum transmission time interval associated with the logical channel is less than the first transmission time interval, transmitting a scheduling request message. The scheduling request message is configured according to a second transmission time interval of the plurality of transmission time intervals, shorter than the first.

Methods and apparatus for utilizing short transmission time intervals in a wireless communications network

Methods, network device and terminal device are disclosed time advance adjustment. A method comprises receiving a time advance, TA, command from a network device; determining a TA granularity or range; and determining a TA value based at least partly on the TA command and the TA granularity or range, wherein different numerologies are configured for at least two carriers and/or at least two bandwidth parts (BWPs) in one carrier, wherein the at least two carriers and/or the at least two BWPs serve the terminal device and/or the terminal device supports at least one numerology.

Method, terminal device and network device for time advance adjustment

Embodiments herein relates to a method performed by a UE for handling communication in a wireless communications network. The UE transmits a first indication in a PHR of a serving cell to a radio network node, wherein the first indication indicates presence of a first type of PH of a first carrier in the PHR of the serving cell, and wherein the first type is referring to an uplink RS transmission power. The PHR of the serving cell further comprises a second indication indicating presence of a PH of a second type of a second carrier of the serving cell, wherein the second type is referring to a user data transmission power.

User equipment, radio network node and methods performed therein

When a node in a cellular communications network is serving a first User Equipment, it obtains information about a second UE that may be used as a relay by the first UE. It obtains information in the event that there is data to be sent to the first UE, and sends a request to a node serving the second UE.

Mobility management for relaying

There is provided a method in a wireless device. The method comprises: receiving a Media Access Control (MAC) Control Element (CE) from a network node, the MAC CE comprising a plurality of octets and a plurality of fields, wherein a first field of the plurality of fields is used to indicate a number of sets of power control parameters in a last octet of the received MAC CE, the sets of power control parameters being associated with a reference signal used for path loss estimation; and sending a transmission to a network node, based at least on a set of power control parameters associated with the reference signal.

Methods and nodes for efficient MAC CE design for indicating mapping between pathloss reference and multiple SRI

Systems and methods for Semi-Persistent Sounding Reference Signal (SP SRS) resource activation or deactivation are disclosed. In some embodiments, a method of operation of a wireless device in a cellular communications network comprises receiving, from a network node, a Medium Access Control (MAC) Control Element (CE). The MAC CE comprises an indication of a SP SRS resource set to be activated or deactivated and information that indicates a spatial relation for the SP SRS resource set to be activated or deactivated. In this manner, a MAC CE for SP SRS resource set activation or deactivation is provided in a manner that gives spatial relation information in an efficient and flexible manner.

Efficient MAC CE indication of spatial relation for semi-persistent SRS

A method performed by a wireless device is described herein. The wireless device operates in a wireless communications network. The wireless device provides a message to be sent to a network node operating in the wireless communications network. The message is a first scheduled message to be sent to the network node in a random access procedure. The message comprises a first indicator of a type of the message. The type of message has: a) a fixed size SDU, and b) a one byte header comprising the first indicator and lacking a second indicator of a length of a payload. The wireless device also initiates sending the provided message to the network node. Also described is a method performed by the network node receiving and initiating processing the message, based on the first indicator.

Methods and apparatus supporting random access procedures in a wireless network

According to certain embodiments, a method by a wireless device is provided for performing logical channel prioritization (LCP) by a wireless device. The method includes selecting a set of logical channels based on one or more logical channel restrictions. The method further includes determining at least one logical channel of the set of logical channels to serve.

Transmission profiles for NR

Growing community of inventors

Vällingby, Sweden

Mats Folke