Telefonaktiebolaget Lm Ericsson (publ)

Other

Asbjörn Grövlen

Xingqin Lin

Yi-Pin Eric Wang

Yutao Sui

Ansuman Adhikary

Zhipeng Lin

Yufei W Blankenship

Johan Mikael Bergman

Stefan Parkvall

Hazhir Shokri Razaghi

Jingya Li

Robert Baldemair

Henrik Sahlin

Pål Frenger

Niklas Johansson

Erik Bengt Dahlman

Andres Reial

Fredrik Ovesjö

Jianwei Zhang

Jung-Fu Cheng

Naga Vishnu Kanth Irukulapati

Mattias Frenne

Dennis Hui

Mårten Sundberg

Johan Axnäs

Robert Mark Harrison

Jianfeng Wang

Icaro L J Da Silva

Johan Rune

Janne Peisa

Claes Tidestav

Hongxia Zhao

Daniel Chen Larsson

Stefan Wager

Jan Christoffersson

Riikka Susitaival

Christian Hoymann

Robert Karlsson

Vidit Saxena

Spendim Dalipi

Dominique Everaere

Kenneth Sandberg

Yufei Blakenship

Methods, a base station, and a terminal device for a two-step random access procedure are disclosed. The base station transmits a first message indicating a subcarrier spacing (SCS) of a physical uplink shared channel (PUSCH) which is to be used for a second message in the two-step random access procedure, through an air interface. The SCS of the PUSCH is same as an SCS used for message 3 in a four-step random access procedure. The base station receives the second message based on the SCS of the PUSCH through the air interface in the two-step random access procedure.

Methods, base station and terminal device for two-step random access procedure

A system and method for providing time domain allocations in a communication system. In an embodiment, an apparatus operable in a communication system and including processing circuitry is configured to receive an indication of a time domain allocation in downlink control information associated with a radio network temporary identifier ('RNTI') identifying the apparatus, and employ the time domain allocation associated with the RNTI for transmissions associated with the apparatus. In another embodiment, an apparatus operable in a communication system and including processing circuitry is configured to associate a time domain allocation with a RNTI identifying a user equipment, and provide an indication of the time domain allocation in downlink control information to allow the user equipment to employ the time domain allocation associated with the RNTI for transmissions associated therewith.

System and method for providing time domain allocations in a communication system

Embodiments of the invention include methods, systems, and computer programs to determine synchronization signal (SS) block mapping pattern in a wireless network. In one embodiment, a method is implemented in a terminal device for synchronization signal block (SSB) search in a wireless network, the method includes receiving, by the terminal device from a network device, a message containing synchronization signal block (SSB) information indicating a synchronization signal (SS) block subcarrier spacing (SCS) option, where the SS block SCS option maps to a plurality of SS block pattern candidates. The method continues with obtaining SSB candidate locations, using a SS block pattern determination from the plurality of SS block pattern candidates for the terminal device determined.

Method and system for determination of synchronization signal (SS) block mapping pattern in a wireless network

A method may be provided to operate a wireless terminal in communication with a network node. The method may include receiving a Physical Downlink Control Channel, PDCCH, order from the network node. The PDCCH order may include an identification for a Random Access CHannel RACH occasion to be used for a RACH message 1 preamble transmission. Moreover, the identification may include a first index that indicates a set of RACH occasions and a second index that indicates the RACH occasion associated with the set. The method may also include transmitting a Message 1 preamble to the network node using the RACH occasion responsive to the PDCCH order.

Methods providing RACH occasion indication for random access procedure initiated by PDCCH order and related wireless terminals and base stations

The embodiments herein relate to timing advance offset for uplink/downlink switching in New Radio (NR). In one embodiment, there proposes a method in a wireless communication device, comprising: determining a timing advance (TA) offset for uplink/downlink switching, wherein the TA offset is at least based on the time offset requirement for uplink/downlink switching in different scenarios used in communication between the wireless communication device and a network node; applying the determined TA offset in the uplink communication from the wireless communication device to the network node. With embodiments herein, uplink/downlink switching time for NR is defined.

Timing advance offset for uplink-downlink switching in new radio

According to one aspect of the disclosure, a wireless device is configured to transmit a random access preamble. The wireless device includes processing circuitry. The processing circuitry is configured to obtain a tone index, and determine a location within a frequency band for transmitting the random access preamble based on the obtained tone index.

Narrowband internet of things random access channel configuration design

Methods and apparatuses for random access. A method performed by a terminal device comprises determining a random access procedure to be performed, the random access procedure being one of a two-step random access procedure and a four-step random access procedure, and transmitting a request message for random access in the determined random access procedure.

Method and apparatus for random access

Methods, a base station, and a terminal device for two-step random access procedure are disclosed. The base station transmits a signalling message indicating a waveform of a physical uplink shared channel (PUSCH) without including a waveform of a preamble which is to be used for message A in two-step random access procedure, through an air interface. The base station receives the message A using the waveform of the PUSCH through the air interface in two-step random access procedure.

A network node determines a first transmission parameter defining first time and/or frequency resources of a downlink control channel and selects between the first transmission parameter and a second transmission parameter to identify a receiver configuration for a wireless device. The second transmission parameter defines second time and/or frequency resources of the downlink control channel that are different from the first time and/or frequency resources. The network node transmits a first signal to the wireless device according to the first transmission parameter. The first signal comprises the second transmission parameter and a configuration indication indicating the receiver configuration selected by the network node for the wireless device. The network node transmits one or more second signals to the wireless device in accordance with the receiver configuration identified for the wireless device. The wireless device receives the first signal and the one or more second signals accordingly.

Efficient CORESET configuration

The disclosure relates to a method performed by a wireless device, for receiving system information from a network node of a wireless communication system. The system information is received in a synchronization signal (SS) block of an SS burst set comprising at least one SS block. The system information is multiplexed with information providing a time index indicating which SS block of the SS burst set that is being received. The method comprises receiving the information providing the time index, and receiving the system information, which comprises descrambling the system information using a scrambling sequence generated based on the information providing the time index. The method also comprises determining an accuracy of the information providing the time index, based on an error-detection code related to the received system information. The disclosure also relates to corresponding network node method and apparatus.

NR broadcast channel transmission

A method performed by a user equipment (UE) in idle mode, for determining common search space (CSS) for NB-IoT paging is disclosed. The method comprises determining a set of periodic subframes as a Paging Occasion (PO) subframe pattern. The method further comprises monitoring a starting subframe of paging CSS for a Radio Network Temporary Identifier (RNTI). The starting subframe of paging CSS is determined as follows: a first subframe (SF) defined by the Paging Occasion subframe pattern, is used when SFis determined to be a valid downlink subframe. A next valid downlink subframe after SFis used when SFis determined to be an invalid downlink subframe.

Common search space (CSS) for paging of NB-IoT devices

Growing community of inventors

Stockholm, Sweden

Asbjörn Grövlen