Telefonaktiebolaget Lm Ericsson (publ)

Emre Yavuz

Andreas Höglund

Tuomas Tirronen

Johan Mikael Bergman

Yutao Sui

Dung Pham Van

Stefan Wänstedt

Olof Liberg

Stefan Wager

Anders K Eriksson

Gunnar Mildh

Johan Rune

Magnus Stattin

Mats Folke

Henning Wiemann

Yufei W Blankenship

Torsten Dudda

Paul Schliwa-Bertling

Angelo Centonza

Walter Müller

Ritesh Shreevastav

Yi-Pin Eric Wang

Erik A Eriksson

Mattias Bergström

Riikka Susitaival

Peter Hedman

Marco Belleschi

Helka-Liina Määttanen

Antti Ratilainen

Gerardo Agni Medina Acosta

Sandeep Narayanan Kadan Veedu

Gunnar Bergquist

Kai-Erik Sunell

Anders Wallén

Anna Larmo

Håkan Palm

Mikael Wittberg

Luca Feltrin

Karin Hedén

Nicklas Johansson

Ali Nader

Vesa Lehtovirta

Magnus Åström

Nianshan Shi

Sara Modarres Razavi

Oscar Ohlsson

Ivo Sedlacek

Helka-Liina Määttänen

Kazuyoshi Uesaka

Stefan Eriksson Löwenmark

Åke Busin

Mikael Wass

Björn Hofström

Yuhang Liu

Jonas Sedin

Hazhir Shokri Razaghi

Martin Van Der Zee

Bela Rathonyi

Sebastian Euler

Samir Shah

Talha Khan

Xiaoming Li

Qiong Song

Stefan Wánstedt

Mattias BERGSTRÖM

Walter MÜLLER

Andreas HÖGLUND

Anders WALLÉN

Stefan WÄNSTEDT

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

A wireless communication device () conditions its use of Preconfigured Uplink Resources (PUR), as preconfigured by a wireless communication network (), on assessing the validity of a Timing Advance (TA) value used by the device () for controlling its uplink transmission timing. The device () maintains a timer () and deems the TA value to be invalid upon expiration of the timer (). In an example case, a device () operating in idle mode performs a PUR-based transmission in dependence on the timer () not being expired. A radio network node () of the network () maintains a like timer (), to maintain an awareness of TA validity at the device () and, for example, sends an updated TA for the device () upon receiving a PUR-based transmission from the device (). The device () and the node () may refresh their respective timers, in association with the TA update.

Methods and apparatuses for using preconfigured uplink resources in a wireless communication network

Methods of operating a network node in a communication network are provided. Operations according to such methods include receiving a transmission that is sent by a user equipment, UE, and that is received over a preconfigured uplink resource, PUR and selecting one or more transmission types for indicating feedback corresponding to the received transmission conditioned to having been successfully received.

Methods and devices for managing transmissions in a wireless communications network

Embodiments of methods for providing timing advance change detection are disclosed. In some embodiments, a method performed by a wireless device for determining a validity of a timing advance configuration of the wireless device for an idle mode transmission includes obtaining, while the wireless device is operating in a connected mode, a timing advance value for the wireless device. The method further includes transitioning from the connected mode to an idle mode, and performing a measurement on one or more serving cells of the wireless device while the wireless device is in the idle mode. The method also includes determining whether the timing advance is valid for an idle mode transmission based on the measurement. In some embodiments, the measurement may be a signal strength measurement, such as a Reference Signal Received Power measurement and/or a signal quality measurement such as, a Reference Signal Received Quality measurement.

Determining timing advance validity in idle mode

Growing community of inventors

Stockholm, Sweden

Emre Yavuz