Telefonaktiebolaget Lm Ericsson (publ)

Reem Karaki

Jung-Fu Cheng

Havish Koorapaty

Amitav Mukherjee

Sorour Falahati

Stephen J Grant

Peter Alriksson

Yuhang Liu

Tai Do

Yu Yang

Min Wang

Gen Li

Johan Rune

Torsten Dudda

Evanny Obregon

Daniel Chen Larsson

Mai-Anh Phan

Marco Belleschi

Du Ho Kang

Narendar Madhavan

Iana Siomina

Yufei W Blankenship

Stefan Wager

Torbjörn Wigren

Mattias Bergström

Helka-Liina Määttanen

Laetitia Falconetti

Guido Roland Hiertz

Thomas Nilsson

Junaid Ansari

Tim Irnich

Hazhir Shokri Razaghi

Hanzhi Zhang

Alexandros Palaios

Dhruvin Patel

Hubertus Andreas Munz

Henrik Sahlin

Magnus Stattin

Henning Wiemann

Jan Christoffersson

Gustav Wikström

Jingya Li

Alexander Vesely

Malik Wahaj Arshad

David Sugirtharaj

Alexey Shapin

John Camilo Solano Arenas

Abdulrahman Alabbasi

Majid Gerami

Bikramjit Singh

Martin Isaksson

Mattias BERGSTRÖM

Havish Koorapathy

Gustav WIKSTRÖM

Systems and methods are disclosed herein for restricting autonomous uplink transmissions by a wireless device in a wireless communication system such that wireless devices performing autonomous uplink transmissions can coexist with wireless devices performing scheduled uplink transmissions in a cell requiring Listen-Before-Talk (LBT). In some embodiments, a method of operation of a wireless device in a wireless communication system comprises receiving, from a radio access node, an indication of which subframes belong to a same channel occupancy within a cell that requires LBT and restricting performance of autonomous uplink transmissions by the wireless device based on the indication of which subframes belong to the same channel occupancy. By restricting autonomous uplink transmissions in this manner, the wireless device can coexist with scheduled wireless devices in the same cell.

Controlling AUL transmissions when coexisting with scheduled UEs

A method, network node and wireless device (WD) for scheduling multiple transport blocks (TB) each over multiple slots using single downlink control information (DCI) are disclosed. According to one aspect, a network node is configured to communicate with a wireless device is provided. The network node includes processing circuitry configured to configure downlink control information, DCI, for scheduling at least one transport block, TB, where at least one of the at least one TB is configured to span more than one slot, and indicate the DCI to the wireless device.

Scheduling multiple transport blocks each over multiple slots using single downlink control information (DCI)

A method, network node and wireless device (WD) for adapting periodic configurations based on spatial relations are disclosed. According to one aspect, a method includes configuring multiple transmission resources or multiple sets of transmission occasions for a radio resource control configured periodic uplink transmission. The method further includes associating each configured uplink transmission received from the WD by the network node with a downlink reference signal, the downlink reference signal provided as a direct or indirect spatial relation reference for the uplink transmission.

Adapting periodic configurations based on spatial relations

A method and communication device for reporting HARQ-ACK code books of fixed sizes in a communication network is provided. The method includes responsive to operating in a first mode, reporting the HARQ-ACK codebook for each scheduled transmission to a network node. The method further includes responsive to operating in a second mode, reporting the HARQ-ACK codebook to the network node if at least one of the HARQ-ACK information in the codebook is ACK, wherein no NACK is transmitted in the codebook when operating in the second mode. The method further includes responsive to operating in a third mode, reporting the HARQ-ACK codebook to the network node if at least one of the HARQ-ACK information in the codebook is NACK, wherein no ACK is transmitted in the codebook when operating in the second mode.

Semi-static HARQ codebook for DL-SPS

A method, system and apparatus are disclosed for transmitting feedback information when operating in unlicensed portions of the radio frequency spectrum. In one embodiment, a wireless device is configured to receive a configuration for a 5 plurality of channels, the configuration configuring each of the plurality of channels with at least one physical uplink control channel, PUCCH, resource; and transmit feedback on the at least one PUCCH resource that is configured in at least one channel of the plurality of channels. In another embodiment, a network node is configured to transmit a configuration for a plurality of channels, the configurationconfiguring each of the plurality of channels with at least one physical uplink control channel, PUCCH, resource; and receive feedback on the at least one PUCCH resource that is configured in at least one channel of the plurality of channels.

Transmit feedback for unlicensed networks

A method, system and apparatus are disclosed for a network node to communicate with a wireless device (WD). The network node and/or WD are configured to determine a transport block, TB, size based at least in part on a number of resource elements in a plurality of time slots; determine a segmentation of a transport block, TB, having the TB size, the segmentation producing a plurality of segmented code blocks, CBs; determine a channel coding for each of the plurality of segmented CBs, the channel coding producing a plurality of coded CBs; and one of transmit and receive the plurality of coded CB s over the plurality of time slots according to the determined segmentation and the determined channel coding.

Transport block (TB) determination for TB transmission over multiple slots

A method and apparatus are disclosed for configured grant uplink control information (UCI) mapping rules. In one embodiment, a network node is configured to transmit downlink control information for a configured grant physical uplink shared channel, CG-PUSCH; and receive configured grant uplink control information, CG-UCI, on the CG-PUSCH, the CG-UCI being mapped to the CG-PUSCH based at least in part on a presence of at least one Hybrid Automatic Repeat reQuest-acknowledgement, HARQ-ACK. In another embodiment, a wireless device is configured to receive, from the network node, downlink control information for a configured grant physical uplink shared channel, CG-PUSCH; and transmit a configured grant uplink control information, CG-UCI, on the CG-PUSCH, the CG-UCI being mapped to the CG-PUSCH based at least in part on a presence of at least one Hybrid Automatic Repeat reQuest-acknowledgement, HARQ-ACK.

Configured grant uplink control information (UCI) mapping rules

A method in a wireless device () comprises obtaining () information related to a signal transmission configuration for autonomous uplink transmission by the wireless device, the information comprising: a set of pre-allocated resources for use by the wireless device in performing autonomous uplink transmission on at least one secondary cell established between the wireless device and a network node (); and a periodicity associated with the set of pre-allocated resources. The method comprises performing () autonomous uplink transmission according to the obtained information related to the signal transmission configuration.

Collision avoidance adaptation for autonomous transmission systems

A method, system and apparatus are disclosed for switching control channel monitoring of search space set group. According to one or more embodiments, a network node is provided. The network node includes processing circuitry configured to: configure a wireless device with at least two search space set groups, SSSGs; configure the wireless device to switch control channel monitoring between the at least two SSSGs; and optionally cause transmission of signaling on the control channel in accordance with the configured switching of the control channel monitoring.

Method for switching control channel monitoring of search space set group

Systems and methods for determining retransmission configuration(s) are provided herein. Some embodiments relate to configuring one or more timers associated with configured grant configurations. A network node can configure a wireless device with a plurality of different configured grant configurations and associated parameters. The wireless device can use a first configured grant configuration for transmitting data and a second configured grant configuration for retransmitting the data.

Timer handling in multiple active grant configurations

Embodiments of systems and methods for operating wireless communication devices (e.g., User Equipments (UEs)) as initiating and responding devices in a Frame-Based Equipment (FBE) New Radio (NR) Unlicensed (NR-U) network are disclosed. The proposed methods allow operating the NR-U network as an FBE system in a flexible manner that supports a wide range of deployments not limited to the UE operating as a responding device. In some embodiments, methods to operate UEs as initiating and responding devices in a FBE-based NR-U network are disclosed.

Operation of wireless communication devices in unlicensed spectrum for frame-based equipment (FBE) networks

Methods and apparatuses are disclosed for energy detection in unlicensed spectrum. In one embodiment, a method implemented in a radio node includes determining a maximum channel occupancy time (MCOT) value; and listen-before-talk (LBT) parameter settings, the MCOT value and/or the LBT parameter settings for one or more LBT parameters depending on an energy detection (ED) threshold value used to access a channel in an unlicensed spectrum; and performing a LBT procedure to gain access to the channel and a transmission on the channel according to the LBT parameter settings and the MCOT value. In one embodiment, a method in a network node includes configuring a wireless device with a MCOT value and LBT parameter settings, the MCOT value and/or LBT parameter settings depending on an ED threshold value used at the wireless device to access the channel.

Flexible energy detection in unlicensed spectrum

Systems and methods are disclosed herein for supporting enhanced dynamic codebook Hybrid Automatic Repeat Request (HARQ) feedback. In one embodiment, a method performed by a wireless communication device comprises receiving, from a base station, downlink control information (DCI) in accordance with a fallback DCI format. The DCI comprises downlink scheduling information that indicates downlink resources allocated for a downlink data channel transmission to the wireless communication device. The fallback DCI format does not include an explicit indication of an identifier of a downlink data channel group of the downlink data channel transmission. The method further comprises attempting to receive and decode the transmission and determining a downlink data channel group for the transmission based on the DCI. The method further comprises generating a dynamic codebook HARQ feedback for the downlink data channel group comprising HARQ feedback for the transmission and transmitting the dynamic codebook HARQ feedback to the base station.

Support of enhanced dynamic codebook with different DCI formats

Methods and apparatus are provided. In an example aspect, a method in a network node is provided, the method comprising monitoring unlicensed spectrum access attempts for transmissions to and/or from at least one User Equipment, UE, in a first group of UEs configured to use unlicensed spectrum to send uplink transmissions and/or receive downlink transmissions and, in response to the monitoring, causing the UEs in the first group to use licensed spectrum to send uplink transmissions and/or receive downlink transmissions.

Using unlicensed and licensed spectrum

A radio device receives control information from a node of the wireless communication network. The control information is used for controlling semi-persistent allocation of radio resources of an unlicensed frequency spectrum. Based on the control information, the radio device controls at least one UL radio transmission on the radio resources of the unlicensed frequency spectrum.

Control of uplink radio transmissions on semi-persistently allocated resources

Growing community of inventors

Aachen, Germany

Reem Karaki