Interdigital Patent Holdings, Inc.

Idac Holdings, Inc.

Sony Group Corporation

Sony Corporation

Interdigital Vc Holdings, Inc.

Moon-il Lee

Janet A Stern-Berkowitz

Afshin Haghighat

Paul Marinier

Marian Rudolf

Shahrokh Nayeb Nazar

Pouriya Sadeghi

Mihaela C Beluri

Ghyslain Pelletier

J Patrick Tooher

Erdem Bala

Tao Deng

Fengjun Xi

Tuong Duc Hoang

Kyle Jung-Lin Pan

Alphan Sahin

Oghenekome Oteri

Benoit Pelletier

Martino M Freda

Virgil Comsa

Rui Yang

Ravikumar V Pragada

Yugeswar Deenoo

Chunxuan Ye

Diana Pani

Sung-Hyuk Shin

Allan Yingming Tsai

Frank La Sita

Guodong Zhang

Robert L Olesen

Li-Hsiang Sun

Samian Kaur

Alpaslan Demir

Mahmoud Taherzadeh Boroujeni

Liangping Ma

Peter Shaomin Wang

John W Haim

Chang-Soo Koo

Pascal M Adjakple

Philip J Pietraski

Manasa Raghavan

Lakshmi R Iyer

Stephen E Terry

Hanqing Lou

Wei Yu Chen

Ahmad Reza Hedayat

Leonid L Kazakevich

Wei Chen

Nobuyuki Tamaki

Loic Canonne-Velasquez

Ananth Kini

Jaya Rao

Changsoo Koo

Meilong Jiang

Sanjay Goyal

Faris Alfarhan

Sungkwon Hong

Arnab Roy

Seyed Mohsen Hosseinian

Young Woo Kwak

Prasanna Herath Mudiyanselage

Aata El Hamss

Steven Ferrante

Sanjeewa Herath

Muhammad U Fazili

Jaehyun Ahn

Kevin T Wanuga

Fumihiro Hasegawa

Lorenza Giupponi

Sandra Lagén Morancho

Biljana Bojović

Daniel R Cohen

Byung Kwan Yi

Hanging Lou

Kyle Pan

Dylan James Watts

Dylan Duc Watts

Paul Mariner

Scott M Newton

Janet A Stern-berkowitz

John Patrick Tooher

Prasanna Herath

Patrick J Tooher

Samian J Kaur

Shakrokh Nazar

Janet A Stern- Berkowitz

Shahrokh Mayeb Nazar

Systems, methods, and instrumentalities are disclosed for LTE operation in an unlicensed spectrum (LTE-U). A wireless transmit/receive unit (WTRU) may establish a connection with a first cell on a licensed frequency band. The WTRU may receive a first downlink transmission from a second cell operating on an unlicensed frequency band. The WTRU may determine that a synchronization signal transmission from a third cell operating on the unlicensed frequency band is transmitted using one or more resource elements. The WTRU may perform frequency and/or timing estimation based on the synchronization signal transmission. The WTRU may perform rate matching around the one or more resource elements that correspond to the synchronization signal transmission. The WTRU may perform rate matching around the one or more resource elements by de-mapping symbols of the downlink transmission.

Channel usage indication and synchronization for LTE operation in unlicensed bands

Transmit and/or receive beamforming may be applied to the control channel transmission/reception, e.g., in mmW access link system design. Techniques to identify candidate control channel beams and/or their location in the subframe structure may provide for efficient WTRU operation. A framework for beam formed control channel design may support varying capabilities of mBs and/or WTRUs, and/or may support time and/or spatial domain multiplexing of control channel beams. For a multi-beam system, modifications to reference signal design may discover, identify, measure, and/or decode a control channel beam. Techniques may mitigate inter-beam interference. WTRU monitoring may consider beam search space, perhaps in addition to time and/or frequency search space. Enhancements to downlink control channel may support scheduling narrow data beams. Scheduling techniques may achieve high resource utilization, e.g., perhaps when large bandwidths are available and/or WTRUs may be spatially distributed.

Downlink control channel design and signaling for beamformed systems

Systems, methods, and instrumentalities are described for handling positioning reference signals in a wireless communication system. The positioning reference signals may be assigned priorities that may be used to facilitate various operations of a wireless transmit/receive unit (WTRU) such as positioning related services, collision avoidance, measurement and reporting, etc. The WTRU may be configured with multiple muting patterns associated with the positioning reference signals and may switch between different muting patterns based on the priorities of the positioning reference signals and/or other downlink (DL) or uplink (UL) transmissions that may overlap or collide with the positioning reference signals.

Handling positioning reference signals in wireless systems

Method and WTRU enabled for service continuity using WTRU-to-WTRU relays. A relay path may be modeled as an SLRB, RLC leg of an SLRB, and/or a MAC logical channel. The WTRU adds a path for a destination based on configured/usable relays. The WTRU may associate an end-to-end L2 destination ID with one or more path L2 destination IDs or path IDs. Upper layers select one or more paths for transmission of a packet/bearer. The WTRU may send a relay announcement message containing path connectivity information. A WTRU may select a path for transmission based on properties associated with a sidelink. The WTRU may activate/deactivate an SL bearer, unicast link, L2 destination, and/or RLC Leg. The WTRU changes a bearer associated with an SLRB from an established RLC entity to another established RLC entity.

Service continuity associated with WTRU to WTRU relays

A wireless transmit/receive unit (WTRU) may be configured to receive configuration information associated with a first transmission configuration indicator (TCI) state group and a second TCI state group. The WTRU may be configured to report first respective measured downlink received power values and first respective determined power reduction values. The WTRU may be configured to report second respective measured downlink received power values and second respective determined power reduction values. The WTRU may be configured to receive an indication of the first TCI state group via a downlink transmission. The WTRU may be configured to determine a first TCI state from the first TCI state group based on downlink received power information and power reduction information. The WTRU may be configured to send an uplink transmission based on the first determined TCI state.

Beam indication based on TCI state group

Systems for performing radiation exposure monitoring that accommodate operating in multiple frequency bands are provided. A WTRU may be configured to monitor radiation exposure by determining an averaged power over an evaluation period. The radiation may be measured over a moving averaging window. The averaged measured power may be compared against SAR or MPE limits which may be defined in terms of normalized fractions or ratios in dB. The WTRU may be configured to measure for an averaged power periodically and/or in response to triggers.

Specific absorption rate and maximum permitted exposure mitigation

A method for determining a DRX operation in a wireless transmit receive unit (WTRU) that has information indicating multiple DRX configurations, includes selecting a first DRX configuration from the multiple DRX configurations based on a first cast type and an associated first quality of service (QoS) information for a first sidelink radio bearer (SLRB) configuration, selecting a second DRX configuration from the multiple DRX configurations based on a second cast type and an associated second QoS information for a second SLRB configuration, determining a sidelink monitoring time based on a combination of an active time associated with the first DRX configuration and an active time associated with the second DRX configuration, and monitoring a sidelink control channel using the determined sidelink monitoring time.

Methods for performing discontinuous reception on sidelink

A wireless transmit/receive unit (WTRU) may receive, from a base station, a synchronization signal/physical broadcast channel (SS/PBCH) block transmission. The WTRU may transmit using a physical random access channel (PRACH) resource. Further, the PRACH resource may be determined based on an SS/PBCH block index. Also, the SS/PBCH block index may be determined based on information associated with the SS/PBCH block transmission. In a further example, the information associated with the PBCH block may be derived from a demodulation reference signal (DMRS) sequence. In another example, the DMRS sequence may be a PBCH DMRS sequence. Also, the information associated with the PBCH block may be derived from PBCH payload bits. Further, the SS/PBCH block index may be associated with a beam. In addition, SS/PBCH transmissions of different beams may be transmitted at different times. Further, the PRACH resource may include a preamble resource, a time resource and a frequency resource.

Random access in new radio (NR) and other beamforming systems

Methods, apparatus, systems and procedures to manage a multicast communication to a multicast group implemented by a respective wireless transmit/receive unit (WTRU) of WTRUs in the multicast group are disclosed. One representative method includes receiving, by the respective WTRU of the multicast group, a configuration, the configuration indicating a Random Access Channel (RACH) preamble to use for a negative acknowledgement (NACK) response to a multicast transmission to the respective WTRU, monitoring, by the respective WTRU, for data of the multicast transmission, determining, by the respective WTRU, whether the monitored for data was successfully received; and on condition that the monitored for data was not successfully received, sending, by the respective WTRU, the RACH preamble indicated by the received configuration.

Methods, apparatus, systems and procedures for supporting multicast transmission

A method and apparatus are described. A method includes determining whether the apparatus is in a coverage enhancement (CE) mode or a non-CE mode. The method further includes receiving a CE-system information block (CE-SIB) on a physical downlink shared channel (PDSCH) based on at least one of a known location or at least one known parameter for the CE-SIB, on a condition that the WTRU is determined to be in the CE mode.

Method and apparatus for system information block (SIB) acquisition for wireless transmit/receive units (WTRUS) in non-CE and coverage enhanced (CE) modes

A method and apparatus are described for a low cost machine-type-communication (LC-MTC) wireless transmit/receive unit (WTRU) to enhance coverage. An example method for physical broadcast channel (PBCH) enhancement includes receiving system information on an enhanced PBCH (ePBCH). The ePBCH is located in a set of radio frames which is a subset of available radio frames, where the subset includes fewer than all the available radio frames. The ePBCH is received in at least one radio frame of the set of radio frames. An example method for physical random access channel (PRACH) enhancement includes receiving configuration of legacy PRACH resources and enhanced PRACH (ePRACH) resources. The WTRU selects one of legacy PRACH resources or ePRACH resources based on a coverage capability. Another example method for PRACH enhancement includes receiving configuration of ePRACH resources. The ePRACH resources include multiple ePRACH resource types, each ePRACH resource type being associated with a coverage capability.

Method and apparatus for enhancing coverage of machine type communication (MTC) devices

A wireless transmit receive unit (WTRU) may receive a physical control channel transmission including control information for a data transmission. The WTRU may determine between a first type of waveform and a second type of waveform for the data transmission based on at least a format of the control information. Further, the WTRU may transmit the data transmission using the determined type of waveform. In an example, the type of waveform is further determined based on indication information included in the physical control channel transmission. Also, the first type of waveform may be an orthogonal frequency division multiplexing (OFDM) waveform and the second type of waveform is a discrete Fourier transform spread OFDM (DFT-S-OFDM) waveform. Moreover, the determination between the first type of waveform and the second type of waveform may be further based on an indication to use the DFT-S-OFDM waveform.

Method and apparatus for physical sidelink control channel (PSCCH) design in new radio (NR)

ePDCCH may be provided. For example, a WTRU may receive a configuration for monitoring an ePDCCH resource. Based on the configuration, the WTRU may be configured to monitor and may monitor the ePDCCH resource on a particular subframe. Additionally, a WTRU may derive an aggregation level for a subframe associated with an aggregation level number N. The WTRU may transmit or monitor an ePDCCH using the aggregation level associated with the Nfor the subframe. A WTRU may also receive a reference signal. The WTRU may then determine the type of reference signal received. The WTRU may perform a demodulation of the PDSCH or ePDCCH using a demodulation timing based on the determined type. The ePDCCH or PDSCH may also be monitored or received by identifying a demodulation reference timing implicitly based on a location of one or more ePDCCH resources where the WTRU may receive DCI.

Systems and/or methods for providing enhanced PDCCH in a multiple carrier based and/or quasi-collated network

Systems, apparatus and methods are described for dynamic demodulation signal resource allocation. PDSCH/PUSCH DMRS enhancement is provided. A dynamic indication of reference signal functionality may be provided in a slot for an additional DM-RS. A configured CSI-RS/SRS may be dynamically indicated to use as an additional DM-RS in a slot. Frequency shift/hopping of DM-RS as a function of OFDM symbol and/or the order of OFDM symbol containing DM-RS may increase frequency density within a slot. DM-RS antenna port aggregation may increase DM-RS frequency density. One or more DM-RS antenna ports may be used to demodulate the same layer. PDCCH DMRS enhancement is provided. Frequency shift/hopping of PDCCH DMRS may be provided as a function of a REG index within an REG bundle, OFDM symbol index, etc. Use of multiple types of REG (e.g., low and high DM-RS) and REG type may be determined based on subcarrier spacing, operating frequency band, etc.

Dynamic demodulation signal resource allocation

A wireless transmit receive unit (WTRU) may be configured to receive configuration information from a network regarding a set of spatial filters for the WTRU to use to communicate with the network. Each of the spatial filters may be associated a beam group and/or a measurement resource. The WTRU may further receive downlink control information (DCI) that indicates one or more time periods in which a portion of the set of configured spatial filters may be applicable. Based on the configuration information, the DCI, and/or a measurement, the WTRU may select a spatial filter from the portion of spatial filters to apply in the time period, and the WTRU may perform a communication task in the time period using the selected spatial filter.

Improving coverage in a high frequency range

Growing community of inventors

Melville, NY, United States of America

Moon-il Lee