Ntt Docomo, Inc.

Qualcomm Incorporated

Shaozhen Guo

Satoshi Nagata

Xiaolin Hou

Jing Wang

Yuki Matsumura

Kazuki Takeda

Lihui Wang

Shohei Yoshioka

Xiaoxia Zhang

Changlong Xu

Xin Wang

Huiling Jiang

Jing X Sun

Hiroki Harada

Liu Liu

Hao Xu

Shinpei Yasukawa

Weiqi Sun

Rajat Prakash

Yuki Takahashi

Chongning Na

Yousuke Sano

Ryosuke Osawa

Xiaohong Zhang

Anxin Li

Luanxia Yang

Siyi Chen

This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, related to transmissions during an idle period of a fixed frame period (FFP). For example, a UE can receive, via system information or radio resource control (RRC) signaling, a FFP defining an idle period. The UE can further determine that a physical random access channel (PRACH) occasion (RO) resource or a physical uplink shared channel (PUSCH) occasion (PO) resource overlaps with the idle period of the FFP. The UE can additionally map the RO resource to the PO resource based on determining that the RO resource or the PO resource overlaps with the idle period of the FFP, and perform a random access channel (RACH) procedure according at least to the mapping of the RO to the PO.

Techniques for transmission of message a (MSGA) in an idle period within a wireless communication system

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an uplink grant scheduling an uplink transmission that is not aligned with a fixed frame period (FFP) boundary configured for the UE. The UE may receive downlink control information (DCI) including an indication that the UE is to initiate a channel occupancy time (COT) acquisition in association with transmitting the uplink transmission. The UE may modify the indication based at least in part on the uplink transmission not being aligned with the FFP boundary and the indication indicating that the UE is to initiate the COT acquisition. The UE may transmit the uplink transmission based at least in part on the uplink grant and after the modification of the indication. Numerous other aspects are described.

Techniques for operation when a scheduled uplink transmission is misaligned with a fixed frame period

A terminal according to an aspect of the present disclosure includes a receiving section that performs reception in at least one of a zero power channel state information reference signal (ZP-CSI-RS) resource and a non zero power channel state information reference signal (NZP-CSI-RS) resource configured for a plurality of transmission/reception points, and a control section that controls interference measurement for at least one of a periodic channel state information (CSI) report, a semi-persistent CSI report, and an aperiodic CSI report based on the reception. According to an aspect of the present disclosure, measurement and reporting of CSI for a multi panel/TRP can be appropriately performed.

Terminal, radio communication method, and base station

A user terminal includes: a control section that determines a set of one or more candidate occasions for reception of a downlink shared channel available in a time unit, based on a HARQ-ACK timing value using the time unit shorter than a slot and a format of the time unit; and a transmitting section that transmits a codebook being determined based on the set of the one or more candidate occasions.

Terminal, radio communication method, base station, and system for controlling HARQ-ACK feedback

A terminal according to one aspect of the present disclosure has a control section that judges indexing of Physical Downlink Control Channel (PDCCH) monitoring occasions or Downlink Control Information (DCI) formats associated with joint feedback, when the terminal is not provided with any CORESET pool index or is provided with a CORESET pool index with a value of '0' for one or more first control resource sets (COntrol REsource SETs (CORESETs)) and is provided with a CORESET pool index with a value of “1” for one or more second CORESETs on an active Downlink Bandwidth Part (DL BWP) of a serving cell, and Acknowledgement (ACK)/Negative Acknowledgement (ACNACK) feedback mode=joint feedback is provided for the serving cell, and a transmitting section that transmits a HARQ-ACK using a Hybrid Automatic Repeat reQuest (HARQ)-ACK codebook or Physical Uplink Control Channel (PUCCH) resource determined based on the indexing. According to one aspect of the present disclosure, in the case of using multi-panel/TRP, it is possible to suitably perform HARQ-ACK feedback.

Aspects of the present disclosure provide techniques for handling scenarios where a physical uplink shared channel (PUSCH) repetition is scheduled as a single symbol. According to certain aspects, a user equipment (UE) is configured to detect that a nominal physical uplink shared channel (PUSCH) repetition is to be segmented into one or more actual PUSCH repetitions that include a single symbol actual PUSCH repetition and take one or more actions to handle a symbol length gap in transmission due to the single symbol actual PUSCH repetition.

Handling of orphan symbols in shared spectrum

A method of wireless communication performed by a user equipment (UE), the method comprising: receiving, from a base station (BS), a random access configuration for a plurality of frame based equipment (FBE) frames, each FBE frame of the plurality of FBE frames including a transmission period and an idle period; and determining a plurality of ROs based on the random access configuration, wherein at least one RO of the plurality of ROs is at least partially overlapping with the idle period of at least one FBE frame of the plurality of FBE frames.

Random access channel transmission for frame based equipment (FBE) mode

A terminal according to an aspect of the present disclosure includes: a receiving section that receives information relating to an uplink signal; and a control section that uses, when medium access control (MAC) control element (CE) is indicated and the information satisfies an applicable condition, a specific spatial relation based on the MAC CE for transmitting the uplink signal instead of a spatial relation indicated for the uplink signal. According to an aspect of the present disclosure, QCL parameters can be appropriately determined.

A terminal according to an aspect of the present disclosure includes: a receiving section that receives information indicating a spatial relation between a reference reference signal (RS) and a target RS with respect to uplink (UL) and downlink (DL) transmission configuration indication (TCI) states; and a control section that controls to apply the TCI states to a UL channel and the target RS based on the information. According to the aspect of the present disclosure, appropriate UL transmission can be implemented.

A terminal according to one aspect of the present disclosure includes a control section that determines spatial relation information for a physical uplink shared channel (PUSCH) for a plurality of transmission/reception points by using at least one of radio resource control (RRC) signaling, medium access control (MAC) signaling, and downlink control information (DCI), and a transmitting section that repeatedly transmits the PUSCH by using a spatial domain transmission filter based on the spatial relation information. According to one aspect of the present disclosure, PUSCH repetition transmission can be appropriately controlled.

A terminal according to one aspect of the present disclosure includes: a receiving section that performs channel state information (CSI) measurement regarding a plurality of panels; and a control section that determines which results of the CSI measurement related to which panel are to be included in a CSI report. According to one aspect of the present disclosure, a panel specific CSI report can be appropriately used.

A user terminal includes a receiving section that receives information indicating a type of a codebook corresponding to each service, and a transmitting section that maps, to the codebook, delivery confirmation information for a downlink shared channel associated with each service and that transmits the codebook. Thus, feedback of an HARQ-ACK can be flexibly controlled.

User terminal and radio communication method

A terminal according to one aspect of the present disclosure includes a receiving section that receives a plurality of pieces of configuration information indicating a plurality of control resource sets, and a control section that, when the plurality of pieces of configuration information do not include a control resource set pool index for one or more control resource sets of the plurality of control resource sets, determines a value of the control resource set pool index for the one or more control resource sets. According to one aspect of the present disclosure, it is possible to appropriately determine an operation for multiple panels/TRPs.

Terminal and radio communication method

A terminal, as disclosed, includes: a processor that, for a plurality of physical downlink shared channels (PDSCHs) transmitted from a plurality of transmission reception points (TRPs), respectively, controls transmission of capability information for indicating a first maximum number regarding a number of layers per PDSCH and a second maximum number regarding a total number of layers of the plurality of PDSCHS; and a receiver that receives the plurality of PDSCHs. The processor controls reporting of a single channel state information (CSI) for the plurality of TRPs, the single CSI indicating a first rank and a second rank that are determined according to a set of ranks based on higher layer signaling. In other aspects, a radio communication method, a base station, and a system are also disclosed.

Terminal, radio communication method, base station, and system

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may start a timer after transmitting an uplink communication on a physical uplink shared channel to a base station using a configured grant. The UE may determine whether the uplink communication is acknowledged as received by the base station based at least in part on determining whether a downlink communication from the base station is detected within a time duration associated with the timer. Numerous other aspects are provided.

Growing community of inventors

Beijing, China

Shaozhen Guo