Telefonaktiebolaget Lm Ericsson (publ)

Sara Sandberg

Yufei W Blankenship

Mattias Andersson

Amirpasha Shirazinia

Arne Simonsson

Stefan Parkvall

Per Burström

Magnus Thurfjell

Robert Baldemair

Jung-Fu Cheng

Sebastian Faxér

Stefano Sorrentino

Shiwei Gao

Dennis Hui

David Astely

Jonas Fröberg Olsson

Magnus Sandgren

Caner Kilinc

Alexey Shapin

Kristofer Sandlund

Paul Schliwa-Bertling

Yi-Pin Eric Wang

John Walter Diachina

Sorour Falahati

Pradeepa Ramachandra

Miguel Lopez

Kumar Balachandran

Joachim Sachs

Andreas Höglund

Torsten Dudda

Osman Nuri Can Yilmaz

Jose Luis Pradas

Niklas Andgart

Stefan Wänstedt

Niklas Wernersson

Sándor Rácz

Peter Ökvist

János Farkas

Ying Sun

Per Skillermark

Dinand Roeland

Henrik Enbuske

Patrik Salmela

Stefano Ruffini

György Miklós

Nianshan Shi

Bernard Smeets

Fredrik Lindqvist

Alexander Hunt

José Araújo

Zhenhua Zou

Dennis Sundman

Anna Larmo

Svante Bergman

Balázs Varga

Kittipong Kittichokechai

Geza Szabo

Harald Gustafsson

Kimmo Juhani Hiltunen

Chrysostomos Koutsimanis

Per Persson

Norbert Reider

András Kern

Joakim Persson

Abdulrahman Alabbasi

Peter De Bruin

Ola Angelsmark

Alexandros Palaios

Gabor Nemeth

Satyam Dwivedi

Zsolt Kenesi

Kun Wang

Majid Gerami

Johan Lundsjö

Bikramjit Singh

Hubertus Andreas Munz

Dhruvin Patel

Garry Irvine

Magnus Malmberg

Mårten Wahlström

Olle Rosin

Gábor Németh

Géza Szabó

Yuri C B Silva

Johan Kristofer Olsson

Fredrik Svensson

Johannes Nygren

Anders Höglund

Muhammad Ikram Ashraf

Torgny Holmberg

Rodrigo Lopes Batista

Elvis M G Stancanelli

Per Skarin

Paulo G Normando

Malgorzata Svensson

Fedor Chernogorov

Ame Simonsson

Johan Olsson

Rodrigo Berg

A system and method for selecting a number of cyclic redundancy check bits in a communication system. In one embodiment, an apparatus operating in a communication system is configured to receive scheduling information from the communication system, and determine an information block length (K) and/or code rate (R) for a code block including a sequence of data bits from the scheduling information. The apparatus is further configured to determine a number of cyclic redundancy check (CRC) bits as a function of the information block length (K) and/or code rate (R) for the code block.

Cyclic redundancy check selection

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 of producing a set of coded bits from a set of information bits for transmission between a first node and a second node in a wireless communications system, the method comprises generating a codeword vector by encoding the set of information bits with a low-density parity-check code, wherein the codeword vector is composed of systematic bits and parity bits. The method comprises performing circular buffer-based rate matching on the generated codeword vector to produce the coded bits for transmission, wherein the circular buffer-based rate matching comprises puncturing a first plurality of systematic bits.

Rate matching methods for LDPC codes

A method for use in a transmitter includes sending a transmission comprising a transport block (TB) comprising a plurality of code blocks (CBs) arranged in one or more code block groups (CBGs). Each code block group includes one or more code blocks and each code block includes a plurality of coded bits. The transmission is sent to a receiver configured to use multi-bit hybrid automatic repeat request (HARQ) feedback per transport block. The method further includes receiving HARQ ACK or NACK feedback from the receiver one or more of the one or more code block groups of the transport block. The method further includes determining a number of code blocks or code block groups to send to the receiver in a retransmission based on at least the received HARQ ACK or NACK feedback.

HARQ handling for nodes with variable processing times

Methods and apparatus are provided. In an example aspect, a method () of estimating a location of a User Equipment (UE) is provided. The method comprises determining () whether a signal transmitted between the UE and a first network node has a line-of-sight (LoS) path between the UE and the first network node, and estimating () the location of the UE based on the signal received at the first network node and based on whether the signal has a LoS path.

Estimating a location of a user equipment

Mechanisms for selecting TDD patterns for DL and UL communication in TDD slots on CCs in a cell. A method is performed by a network management node. The method includes performing selection of the TDD patterns for DL and UL communication on CCs in the cell. According to the selection of the TDD patterns, at least one of the CCs is configured with a first TDD pattern, and at least one of the CCs is configured with a second TDD pattern. There is a higher fraction of DL TDD slots in the first TDD pattern than in the second TDD pattern.

Selection of TDD patterns for DL and UL communication

According to some embodiments, a method for use in a wireless transmitter of a wireless communication network comprises encoding information bits using a parity check matrix (PCM) and transmitting the encoded information bits to a wireless receiver. The parity check matrix (PCM) is optimized according to two or more approximate cycle extrinsic message degree (ACE) constraints. In some embodiments, a first portion of the PCM is optimized according to a first ACE constraint and a second portion of the PCM is optimized according to a second ACE constraint.

Shift values for quasi-cyclic LDPC codes

There is presented a method for a network node for reducing interference in a wireless device (), the wireless device operating using a time division0duplex. TDD, configuration in a cell, from at least another wireless device operating in a neighbouring cell using another TDD configuration. The TDD configuration is divided into different time units for at least downlink, DL, and uplink. UL, transmission. The method includes assigning time units in the TDD configuration to one of at least two time unit groups, where the assignment of a time unit to a time unit group is based the interference from the neighboring cell using the another TDD configuration. The method further includes using different link adaptions for the at least two time unit groups. The is also presented a network node.

Method and network node for interference mitigation for TDD UL/DL configuration

A method for operating a cell, performed by a network node. The method includes transmitting a frame comprising a set of slots receiving Channel State Information, CSI, reports at least indicative of interference measured by a user equipment using the set of slots, estimating a transmission direction pattern of an adjacent cell relative a transmission direction pattern of the cell based on the received CSI reports, and transmitting a signal to the user equipment based on the estimated transmission direction pattern of the adjacent cell.

Slot-based CSI report configuration for dynamic TDD

Methods, systems, and apparatus are provided for encoding code blocks for transmission in a wireless communication system. An example encoding method in a wireless communication system includes determining, for one or more code blocks of a transport block, that at least one of a plurality of criteria is met, wherein the plurality of criteria includes that a coding rate (R) is less than or equal to 1/4 or that a transport block size (TBS) is less than or equal to 3824 bits and the R is less than or equal to 2/3. The one or more code blocks are encoded using low-density parity-check (LDPC) base graph 2, wherein a maximum code block size is 3840 bits. The one or more encoded code blocks are transmitted over the wireless network.

Code block segmentation for new radio

There is provided a method, performed by a network unit, for enabling management of random access attempts in a wireless communication system by a plurality of devices having wireless communication capabilities. The method comprises obtaining (S) information representing the load of random access attempts, and determining (S), based on the information representing the load of random access attempts, control information for controlling a distribution of the random access attempts over time.

Enabling management of random access attempts in a wireless communication system

According to some embodiments, a method for use in a wireless transmitter of a wireless communication network comprises encoding information bits using a purity check matrix (PCM) and transmitting the encoded information bits to a wireless receiver. The parity check matrix (PCM) is optimized according to two or more approximate cycle extrinsic message degree (ACE) constraints. In some embodiments, a first portion of the PCM is optimized according to a first ACE constraint and a second portion of the PCM is optimized according to a second ACE constraint.

The application relates to the adaptation of the length of the cyclic redundancy check (CRC) code in the context of 3GPP NR. In 3GPP NR, the length of the uplink and downlink control information (UCI, DCI) significantly varies. Therefore, it is necessary to select a CRC code of appropriate size or length. Accordingly, a method () for use in a wireless transmitter comprises: determining an amount of data to transmit (); determining a cyclic redundancy check (CRC) polynomial length based on the amount of data to transmit (); encoding the data using a CRC of the determined polynomial length (); and transmitting the encoded data (). The data to transmit may not only comprise control channel data but also user data and may be encoded with a Polar code or a low-density parity check (LDPC) code.

Adaptation of the CRC code length for 3GPP NR

A radio node is configured for use in a wireless communication system. The radio node in this regard is configured to transmit a signal that is punctured by another signal to another radio node. The radio node is also configured to estimate a probability of decoding failure that characterizes a likelihood that the another radio will fail to decode the punctured signal. The radio node is further configured to retransmit at least a punctured portion of the punctured signal if the estimated probability is above a threshold.

Retransmission for punctured signals

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Luleå, Sweden

Sara Sandberg