Telefonaktiebolaget Lm Ericsson (publ)

Emre Yavuz

Andreas Höglund

Tuomas Tirronen

Johan Mikael Bergman

Yutao Sui

Dung Pham Van

Stefan Wänstedt

Magnus Stattin

Olof Liberg

Antti Ratilainen

Stefan Wager

Mats Folke

Henning Wiemann

Anders K Eriksson

Gerardo Agni Medina Acosta

Sandeep Narayanan Kadan Veedu

Yufei W Blankenship

Torsten Dudda

Gunnar Bergquist

Kai-Erik Sunell

Paul Schliwa-Bertling

Walter Müller

Angelo Centonza

Ritesh Shreevastav

Johan Rune

Yi-Pin Eric Wang

Erik A Eriksson

Mattias Bergström

Anders Wallén

Riikka Susitaival

Anna Larmo

Håkan Palm

Mikael Wittberg

Sebastian Euler

Karin Hedén

Luca Feltrin

Gunnar Mildh

Peter Hedman

Marco Belleschi

Helka-Liina Määttanen

Magnus Åström

Ali Nader

Nicklas Johansson

Vesa Lehtovirta

Oscar Ohlsson

Nianshan Shi

Sara Modarres Razavi

Ivo Sedlacek

Helka-Liina Määttänen

Åke Busin

Kazuyoshi Uesaka

Stefan Eriksson Löwenmark

Mikael Wass

Björn Hofström

Yuhang Liu

Jonas Sedin

Hazhir Shokri Razaghi

Martin Van Der Zee

Bela Rathonyi

Samir Shah

Talha Khan

Xiaoming Li

Mattias BERGSTRÖM

Qiong Song

Helka-Liina MÄÄTTÄNEN

Stefan Wánstedt

Chao He

Andreas Hoglund

Stefan Wanstedt

Walter MÜLLER

Andreas HÖGLUND

Anders WALLÉN

Stefan WÄNSTEDT

A method performed by a wireless device includes receiving ephemeris data from a network node associated with a first cell. The ephemeris data is associated with a satellite serving a second cell, and the ephemeris data is coarse ephemeris data comprising less than full accuracy than full ephemeris data. The wireless device uses the coarse ephemeris data to locate a beam associated with the second cell and synchronizes with the second cell.

Methods and systems for signalling ephemeris data in a non-terrestrial network

According to some embodiments, a method performed by a wireless device comprises: receiving a broadcast of full ephemeris data for a serving cell satellite, the broadcast of full ephemeris data occurring at a first periodicity; determining a position of the serving cell satellite based on the full ephemeris data; receiving a broadcast of delta ephemeris data for the serving cell satellite, the broadcast of delta ephemeris data occurring at a second periodicity more frequent than the first periodicity; and determining a position of the serving cell satellite based on the full ephemeris data and the delta ephemeris data.

Ephemeris data signaling-delta over time

A method () by a wireless device () includes transmitting (), to a network node (), a request for a preconfigured uplink resource, PUR, configuration. The wireless devicereceives the PUR configuration from the network node, and the PUR configuration comprising time and/or frequency resources for transmitting on an uplink. The wireless device determines a PUR start time based on a value associated with a hyper system frame number (HSFN), a HSFN cycle, and/or a subframe number. The PUR start time measured relative to a time associated with the PUR configuration.

Calculation of preconfigured uplink resource occasion start time and periodic timing

Systems and methods for determining timing advance (TA) validity are disclosed. In some embodiments, systems and methods are disclosed herein in which a wireless device implicitly considers a TA to be valid in a full cell when no TA validation mechanisms are explicitly configured. In other embodiments, systems and methods are disclosed herein in which a timer serves a dual purpose. If the timer is set to infinity, a wireless device will always consider a TA to be valid within a given cell, and at the same time will disable other TA validation mechanisms. Otherwise, the wireless device will interpret the timer as indicating for how long the TA value that the wireless device possesses is considered to be valid. Benefits of the solutions described herein include reducing signaling bits in the configuration and avoiding the possibility of conflicting configurations.

Preconfigured uplink resources—configuration for TA validity in entire cell

Embodiments include methods implemented in a wireless device for efficient energy consumption at the wireless device. In one embodiment, a method comprises performing an uplink transmission on pre-configured resources to a network node; and monitoring in a search space (SS) window for an application layer response from a network node downlink transmission based on an offset value indicating a time difference between the SS window and the uplink transmission on the pre-configured resources.

Configurable starting position of search space window for uplink transmission on pre-configured resources

A method performed by a user equipment. The method is for providing first information to a network node. The user equipment and the network node operate in a wireless communications network. The user equipment sends a first indication to the network node. The first indication indicates whether or not first information is being provided. The first information comprises at least one of: a) a quality report on a carrier used between the network node and the user equipment, and b) second information on subsequent transmissions from the user equipment to the network node or from the network node to the user equipment. The first indication is comprised in a payload of a Medium Access Control control element.

User equipment, network node, and methods performed thereby, for handling first information

A method () performed by a wireless device () includes obtaining a remaining service time (T) associated with a first satellite or first spot beam. Based on the remaining service time, the wireless device determines whether to initiate a connection with the first satellite or first spot beam.

Power efficient non-terrestrial network connection establishment

A method performed by a wireless device, UE, for configuring a semi-persistent scheduling, SPS is described. In accordance with the method, the UE may be configured to monitor a first search space of a physical downlink control channel for downlink control information, DCI, dedicated to the UE. The method may include receiving from the communication network SPS configuration data to configure a second search space to be monitored by the UE for DCI to activate or de-activate the SPS, the second search space being smaller than the first search space, and monitoring the second search space to detect the DCI to activate or de-activate the SPS. A corresponding method may be performed by a network node.

Activation and de-activation of semi-persistent scheduling

A method for cell reselection by a non-Bandwidth reduced Low complexity (non-BL) wireless device camped in a standalone-cell providing enhanced coverage to the wireless device. The method includes determining, based on a respective signal strength of each of a plurality of cells, a first ranking of the plurality of cells. The plurality of cells include at least the standalone cell and a target cell. While the non-BL wireless device is camped in the standalone cell with enhanced coverage, the non-BL wireless device determines that at least one criteria is met for a cell reselection from the standalone cell to the target cell offering normal coverage to the non-BL wireless device. The non-BL wireless device selects the target cell to camp in whether or not the target cell ranks higher than the standalone cell in the first ranking.

Cell reselection in LTE-M standalone cells

Systems and methods for handling transmissions and retransmissions on a periodic preconfigured uplink resource (PUR) are provided. Respective resources for transmission and retransmission can be determined and configured for a wireless device to prevent blocking of a new data transmission on a PUR opportunity by a retransmission attempt. Responsive to determining that a first transmission on the PUR was unsuccessful, a second resource can be configured for the retransmission.

Retransmission handling for preconfigured uplink resources

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

A wireless device receives a downlink message from a network node. The wireless device descrambles or decrypts the downlink message, or one or more fields of the downlink message, to obtain one or more parameters. The wireless device uses the one or more parameters to perform at least one action from any one or more of the following actions: receiving a mobile-terminated, MT, early data transmission, EDT, during a random access procedure; positively or negatively acknowledging the MT-EDT; and receiving a re-transmission of the MT-EDT.

Early transmission of mobile-terminated data

Systems and methods for recommending a data rate on an uplink or downlink communication channel between the network node and a wireless device in a wireless communications system are provided. In one exemplary embodiment, a method performed by a wireless device for recommending a data rate on an uplink or downlink communication channel between the wireless device and a network node in a wireless communications system comprises determining to request that the network node recommend a data rate on the uplink or downlink communication channel for the wireless device. Further, the method includes generating a first information element that indicates the request. Also, the first information element is sent via a protocol layer on the uplink communication channel.

Systems and methods of recommending a data rate in a wireless communications system

The present disclosure relates to a method performed by a first network node. The first network node determines which UE category a UE belongs to. The UE category is M or non-BL in CE. The first network node provides UE category information about the determined UE category to a second network node.

UE, network nodes for handling UE category information

A method of operating a wireless terminal may include transmitting a random access preamble of a random access procedure from the wireless terminal to a node of a radio access network. After transmitting the random access preamble, a random access response of the random access procedure may be received from the node of the radio access network, with the random access response including an Uplink grant for a Message 3 uplink communication of the random access procedure. The UL grant may include a time domain configuration associated with the Message 3 uplink communication. The time domain configuration may include a repetition factor that defines a number of repetitions across subframes for the Message 3 uplink communication, and/or Transmission Time Interval information for the Message 3 uplink communication. Related wireless terminals and base stations are also discussed.

Methods providing UL grants including time domain configuration and related wireless terminals and network nodes

Growing community of inventors

Stockholm, Sweden

Emre Yavuz