Telefonaktiebolaget Lm Ericsson (publ)

Guangdong Oppo Mobile Telecommunications Corp., Ltd.

Henrik Enbuske

Torsten Dudda

Jan Christoffersson

Jose Luis Pradas

Gustav Wikström

Mats Folke

Mattias Bergström

Robert Mark Harrison

Zhipeng Lin

Robert Baldemair

Johan Rune

Jinhua Liu

Henrik Sahlin

Min Wang

Stefan Parkvall

Paul Schliwa-Bertling

Johan Mikael Bergman

Henning Wiemann

Qianxi Lu

Michael Meyer

Jonas Fröberg Olsson

Marco Belleschi

Eva Englund

Daniel Chen Larsson

Yi-Pin Eric Wang

Andres Reial

John Walter Diachina

Stefan Wager

Janne Peisa

Andreas Höglund

Niklas Andgart

Laetitia Falconetti

Stefan Wänstedt

Muhammad Ali Kazmi

Iana Siomina

Ghyslain Pelletier

Gunnar Mildh

Yufei W Blankenship

Fredrik Gunnarsson

Stefano Sorrentino

Magnus Stattin

Sorour Falahati

Pradeepa Ramachandra

Miguel Lopez

Kumar Balachandran

Joachim Sachs

Dirk Gerstenberger

Zhang Zhang

Osman Nuri Can Yilmaz

Olof Liberg

Håkan Persson

Håkan Palm

Malik Wahaj Arshad

Robert Karlsson

Ying Sun

János Farkas

Sándor Rácz

Dinand Roeland

Jens Bergqvist

Zhenhua Zou

Anna Larmo

Kittipong Kittichokechai

Magnus Lindström

Jonas Sedin

Anders Furuskär

Johan Axnäs

Edgar Ramos

Kai-Erik Sunell

Peter Moberg

Björn Hofström

Ylva Timner

Yunxi Li

Alexey Shapin

Mattias Andersson

György Miklós

Stefano Ruffini

Patrik Salmela

Nianshan Shi

Oscar Ohlsson

Tuomas Tirronen

Ritesh Shreevastav

Bernard Smeets

Alexander Vesely

Sara Sandberg

Dennis Sundman

José Araújo

Christian Skärby

Magnus Sandgren

Balázs Varga

Jörg Huschke

Geza Szabo

Harald Gustafsson

Antonino Orsino

Kimmo Juhani Hiltunen

Ann-Christine Eriksson

Mats Buchmayer

Dung Pham Van

Joakim Åkesson

Per Persson

Norbert Reider

Techniques for enhancing performance in Industrial Internet-of-Things (IIoT) scenarios, including techniques for time-sensitive networking (TSN) and 5G wireless network integration. An example method, performed by a wireless device, comprises receiving system information (SI) from a radio base station (RBS) of a radio access network (RAN), the SI being indicative of support for TSN through the RBS, and establishing at least one TSN stream with an external data network, through the RBS. The example method further includes receiving a first timing signal from the wireless communications network, via the RBS, receiving a second timing signal from the external TSN data network to which the wireless device is connected, comparing the first timing signal to the second timing signal to determine an offset, and transmitting the offset to the wireless communications network.

Industrial automation with 5G and beyond

A method performed by a wireless device for determining an identity of the wireless device, MsgB RNTI, in a wireless communications network during a random access procedure is provided. The wireless device transmits a random access preamble on a RACH at a random access occasion. It also transmits a message on a PUSCH that corresponds to the random access preamble. Further, the wireless device determines an MsgB RNTI as the sum of a first identity, RA-RNTI, and an offset that is an integer greater than 1, wherein the RA-RNTI is based on a sum comprising terms corresponding to at least the index of a first OFDM symbol, the index of a frequency resource, and the index of a first time slot that identifies the time/frequency resources of the random access occasion.

Wireless device, a network node, and methods therein for determining an identity of a wireless device during a random access procedure

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

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

According to certain embodiments, a method performed by a wireless device comprises receiving a first grant and a second grant from a network node. The first grant and the second grant are overlapping. The method comprises determining a prioritized one of the first grant and the second grant and constructing a Medium Access Control (MAC) Protocol Description Unit (PDU) for the prioritized grant of the first grant and the second grant. According to certain embodiments, a method performed by a network node comprises transmitting a first grant and a second grant to a wireless device. The first grant and the second grant are overlapping. The method comprises receiving a transmission from the wireless device on a prioritized one of the first grant and the second grant.

Multiple grant handling in mixed services scenarios

According to certain embodiments, a method performed by a wireless device comprises receiving a first grant and a second grant from a network node. The first grant and the second grant are overlapping. The method comprises pre-empting a transmission for the first grant based on prioritizing a transmission for the second grant. The method comprises controlling a timer used in a hybrid automatic repeat request (HARQ) process associated with the first grant based on pre-empting the transmission for the first grant.

Configured grant timer in intra-user equipment multiplexing

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

The present disclosure provides a method in a User Equipment of transmitting a random access preamble and a physical uplink shared channel, comprising: determining a resource size to be used to contain the physical uplink shared channel, the resource size being one of a set of predetermined sizes; identifying a resource to be used from a predetermined set of resources, the resource in the set of resources corresponding to the determined resource size, each resource being identified with a respective first index n and occupying a distinct set of OFDM symbols and subcarriers; identifying a PRACH preamble with a second index n' corresponding to the first index n of the identified resource; and transmitting the identified PRACH preamble, and the physical uplink shared channel in the identified resource.

Method and apparatus for physical uplink shared channel format adaptation

In one embodiment, a method in a wireless device for adaptive HARQ retransmissions comprises receiving, from a network node, a request to initiate an adaptive hybrid automatic repeat request (HARQ) retransmission. The method comprises identifying a HARQ process associated with the HARQ retransmission request and determining whether a HARQ buffer of the HARQ process is empty. In response to determining that the HARQ buffer is empty, the method comprises not delivering the HARQ information to the HARQ process and not triggering an adaptive HARQ retransmission.

SPS with skipping transmissions and adaptive HARQ

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 wireless device is configured to receive information from a network node. The information indicates whether or not a medium access control, MAC, service data unit, SDU, for a signaling radio bearer, SRB, or data radio bearer, DRB, is to be received by the wireless device in the same MAC protocol data unit, PDU, as a MAC PDU carrying a random access success response message. This random access success response message indicates both a random access channel and an uplink shared channel payload were decoded successfully. In some embodiments, the wireless device is configured to receive a MAC PDU carrying the random access success response message, and to process the received MAC PDU based on the received information indicating whether a MAC SDU for an SRB or DRB is included in the received MAC PDU.

Configuration of a random access procedure

Methods and apparatuses are disclosed for PUSCH resource selection in 2-step random access (RA). In one embodiment, a wireless device is configured to receive a two-step RA configuration having: a first resource allocation for a PUSCH transmission of a first message, msgA, of the two-step RA procedure, the first resource allocation for the PUSCH transmission of the msgA being associated with a first set of preambles; and a second resource allocation for the PUSCH transmission of the msgA associated with a second set of preambles; select one of the first and second resource allocation and the associated one of the first and second set of preambles based on the two-step RA configuration and a payload size of the PUSCH transmission of the msgA; and transmit the PUSCH transmission of the msgA using the selected one of the first and second resource allocation.

PUSCH resource selection in 2-step random access

Various embodiments of the present disclosure provide methods and apparatuses for determining radio network temporary identifier (RNTI) in a two-step random access procedure. A method of a terminal device, comprising: determining a request message for random access, wherein the request message comprises a preamble and a physical uplink shared channel, PUSCH, message and the PUSCH message is determined based on a first radio network temporary identity, RNTI; transmitting the request message; and obtaining a response message for random access based on a second RNTI, wherein the first RNTI and the second RNTI are the same or different.

Method and apparatus for determining radio network temporary identifier in two-step random access procedure

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

Growing community of inventors

Stockholm, Sweden

Henrik Enbuske