Telefonaktiebolaget Lm Ericsson (publ)

Other

Andreas Höglund

Emre Yavuz

Tuomas Tirronen

Yutao Sui

Olof Liberg

Yi-Pin Eric Wang

Johan Mikael Bergman

Magnus Stattin

Ali Nader

Magnus Åström

Anders Wallén

Xingqin Lin

Osman Nuri Can Yilmaz

Stephen J Grant

Stefan Wänstedt

Oscar Ohlsson

Paul Schliwa-Bertling

Jonas Kronander

Stefan Wager

Rui Fan

Joakim Axmon

Riikka Susitaival

Mats Folke

Anders Furuskär

Stefan Parkvall

Gunnar Mildh

Yufei W Blankenship

Erik Bengt Dahlman

Mattias Bergström

Joachim Sachs

Zhang Zhang

Jan Christoffersson

Béla Rathonyi

Dung Pham Van

Gerardo Agni Medina Acosta

Ritesh Shreevastav

Sandeep Narayanan Kadan Veedu

Edgar Ramos

Martin Van Der Zee

Antti Ratilainen

Yuhang Liu

Hazhir Shokri Razaghi

Mohammad Mozaffari

Luca Feltrin

Hugo Tullberg

Kittipong Kittichokechai

Sofia Brismar

Yi-Ju Chen

Nicklas Johansson

Vesa Lehtovirta

Henrik Enbuske

Mårten Ericson

Sara Modarres Razavi

Magnus Karlsson

Yngve Selén

Kai-Erik Sunell

Håkan Palm

Kazuyoshi Uesaka

Mikael Wittberg

Åke Busin

Mikael Wass

Xinyu Gu

Henrik Nyberg

Johan Zhang

Ali Nadar

Anders Wallèn

Andres Laya

Zhang Johan

Per Magnus ÅSTRÖM

Stephen Grant

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

A wireless device () obtains () a configuration of a set of periodic uplink resources specific for the device. The configuration configures the set of resources to support: a) a first procedure comprising a first Physical Uplink Shared Channel (PUSCH) transmission of a Message A (MsgA) transmission, b) a second procedure comprising uplink transmissions of, or corresponding to, a two-step Random Access Channel (RACH) procedure comprising, a first Physical Random Access Channel (PRACH) transmission and a second PUSCH transmission, and/or c) a third procedure comprising uplink transmissions of, or corresponding to, a four-step RACH procedure comprising a second PRACH transmission, and a third PUSCH transmission. A Timing Advance (TA) value of at least one of the transmissions is: i) independently configurable between the PUSCH and the PRACH transmissions, ii) configured to be zero, and the wireless device () refrains from validating the TA value, and/or iii) explicitly configured and validated before transmission from inactive or idle.

Wireless device, network node, and methods performed thereby, for handling uplink communication

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

Techniques for facilitating dedicated transmissions over preconfigured uplink resources. Embodiments include techniques to configure subsequent PUR resource utilization (e.g., one-at-a-time basis or on a periodic basis), changes to EDT signaling to allow functioning with PUR, etc. An example method performed by a wireless device configured for use in a wireless communication network includes transmitting (), in an uplink message, a request for a configuration of preconfigured uplink resources. The method further includes receiving (), during a connected mode in which the wireless device has a connection with the wireless communication network, control signaling indicating a first preconfigured resource configuration that configures a first preconfigured resource. The method also includes transmitting or receiving () user data using the first preconfigured resource.

Support for transmission in preconfigured UL resources

Systems and methods are disclosed herein for Control Resource Set (CORESET) enhancements for initial access. In one embodiment, a method performed by a wireless communication device comprises receiving and decoding a Physical Downlink Control Channel (PDCCH) transmission in a CORESET in accordance with at least a portion of a Control Channel Element (CCE) to Resource Element Group (REG) mapping. The PDCCH transmission comprises one or more CCEs. The CCE to REG mapping comprises an interleaved portion that maps the one or more CCEs to a first set of REGs that are spread across a bandwidth of the CORESET, and a second portion that maps at least a portion of an additional CCE to at least a REG in a frequency gap between two REGs in the first set of REGs, the additional CCE corresponding to one of the CCEs mapped to the first set of REGs.

Coreset enhancement for reduced bandwidth UEs initial access

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 wireless device determines whether to provide a reduced capability, RedCap, indication via a message 1 of a random access procedure. The wireless device transmits the message 1 based on the determination, and transmits a message 3 of the random access procedure. A RedCap indication is provided via the message 3 at least if a RedCap indication is not provided via the message 1. According to some embodiments, the wireless device receives an indication whether the wireless device is to provide a RedCap indication via the message 1, and the determination is based on the received indication. According to some embodiments, the indication whether the wireless device is to provide a RedCap indication via the message 1 is provided by whether a physical random access channel, PRACH, partition between RedCap wireless devices and other wireless devices is configured.

Early indication for reduced capability devices

A method by a reduced capability wireless device includes receiving system information from a network node. The system information comprising information specific to the reduced capability wireless device. The reduced capability wireless device performs an operation using at least the information specific to the reduced capability wireless device received in the system information.

Methods for enabling a low bandwidth wireless device to access a new radio cell via a wideband control resource set

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 method is performed by a wireless device for early data transmission. The method comprises receiving a broadcast from a network node. The broadcast indicates a maximum transport block size for early data transmission and a number of transport block size candidates. The method further comprises selecting a transport block size for early data transmission. The transport block size is selected based on a table entry that corresponds to the maximum transport block size and the number of transport block size candidates. The method further comprises transmitting uplink data in one or more transport blocks. Each transport block has the selected transport block size.

Transport block size selection for early data transmission

There is provided a method performed by a wireless device for communicating with a network node in a wireless communication network. The method includes using a field in a Master Information Block (MIB) received by the wireless device, as an indication of a presence of an extended MIB (eMIB) and identifying which candidate resource of at least one candidate resource that contains the eMIB based on the indication of the presence of the eMIB. There is also provided a corresponding wireless device for communicating with a network node, a method perform by a network node, and a network node.

Master information block extension in a New Radio cell

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

There is provided a method for improving early data transmission (EDT). The method includes transmitting first transport block size (TBS) information indicating a first set of one or more EDT TBSs. The method further includes after transmitting the first TBS information, obtaining EDT usage information and based on the obtained EDT usage information, determining whether to transmit the first TBS information or second TBS information indicating a second set of one or more EDT TBSs. The method further includes transmitting the first TBS information or the second TBS information based on the determination.

Optimization for early data transmission (EDT)

The present disclosure relates to telecommunications. In one of its aspects, the disclosure concerns a method, performed by a User Equipment (UE), in a communications network. The method comprises receiving a broadcast from a base station. The broadcast comprises an indication indicating whether the UE is allowed to use a preconfigured resource configuration associated with the UE. The method further comprises determining, based on the indication in the broadcast, whether the UE is allowed to use the preconfigured resource configuration.

Methods and nodes for communication using preconfigured resource configurations

Embodiments include methods for a user equipment (UE) to receive wake-up signals (WUS) from a network node in a radio access network (RAN) coupled to a core network (CN). Such methods include determining a WUS group assigned to the UE and a WUS resource associated with the assigned WUS group, based on the following: a paging probability (PP) indication assigned to the UE; a plurality of discontinuous reception (DRX) parameters; a mapping between a plurality of PP indication values and a plurality of available WUS groups; and a first identifier associated with the UE. Such methods also include, during a time period of the WUS resource, monitoring for a group WUS associated with the assigned WUS group. Embodiments also include complementary methods for network nodes in the RAN and the CN, as well as UEs and network nodes configured to perform such methods. FIG.is selected for publication.

User equipment (UE) grouping for wake-up signal (WUS) based on paging probability

Growing community of inventors

Solna, Sweden

Andreas Höglund