Abstract: A method for determining a HARQ identifier includes determining, by a network device, a HARQ identifier of a transport block (TB) based on a first time domain resource sequence number of a current TB, a number of HARQ processes, a time domain period of a non-dynamic resource, and a HARQ identifier offset. The method also includes receiving, by the network device, the TB from a terminal on the non-dynamic resource according to the HARQ ID.

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer storage media, for multiple downlink control information (DCI) message handling for multiple control resource set (CORESET) groups. In one aspect, a user equipment (UE) may provide separate or joint feedback for data messages received from different CORESET groups. In some examples, the UE may be configured with code block group (CBG)-based transmissions for a component carrier (CC) or a CORESET group in a CC. If implementing a dynamic codebook, the UE may track separate transport block (TB)-based and CBG-based downlink assignment indexes (DAIs) for each CORESET group or may track joint TB-based and CBG-based DAIs across the set of CORESET groups to handle the CBG configuration. Additionally, or alternatively, if implementing a semi-static codebook, the UE may apply skipping rules across the set of CORESET groups or separately for each CORESET group to reduce signaling overhead.

Abstract: An apparatus, circuit, and method for controlling a service access in a packet data communication system are provided. The method includes broadcasting information related to whether a service access to a specific service is possible.

Abstract: A method of telecommunication between a base station and user equipment. The method includes: identifying disjoint lists of pilots, namely a first for initial uplink transmissions and a second for uplink retransmissions, and defining a first mapping between the pilots of the two lists.

Abstract: Apparatus and methods are provided to detect radio link failure in a NR access system. In one novel aspect, the radio link failure is detected upon detection of one or more radio link failure conditions on the serving beam. In one embodiment, the physical layer problem is considered as detected when one or more predefined events occur for a number of consecutive times on the serving beam. In another embodiment, the UE further considers potential recoveries to avoid frequent triggering of the radio link failure condition. In one embodiment, the UE performs the initial alignment procedure to recover the connection. In one embodiment, UE performs the initial alignment procedure without performing radio link recovery on the serving beam. In other embodiments, the UE performs the initial alignment procedure after performing radio link recovery on the serving beam and/or selects one or more beams for initial beam alignment.

Abstract: Wireless communications systems and methods related to communications in a network are provided. A first wireless communication device communicates, with a second wireless communication device in a first frequency band, a first downlink (DL) communication signal indicating information associated with a transmission opportunity (TXOP) in a second frequency band different from the first frequency band. The first wireless communication device communicates, with the second wireless communication device in the second frequency band based on the first DL communication signal, a second DL communication signal during the TXOP.

Abstract: A terminal apparatus capable of efficiently performing uplink and/or downlink communication is provided. With respect to communication related to transport blocks and code block groups, in a case that a PDSCH and/or a PUSCH is scheduled by a PDCCH detected in a common search space CSS, an operation applied to a transmission process includes a prescribed operation regardless of a prescribed condition and first configuration information. In a case that the PDSCH and/or the PUSCH is scheduled by the PDCCH detected in a UE-specific search space USS, the operation applied to the transmission process is provided, based at least on the prescribed condition and/or the first configuration information.

Abstract: To perform a random access procedure appropriately in communication using beamforming. A user terminal for communicating with a radio base station using a plurality of beams includes: a transmission section that transmits a random access preamble; a reception section that receives a random access response corresponding to the random access preamble; and a control section that controls transmission of the random access preamble and/or reception of the random access response using given resources associated with a plurality of beam patterns.

Abstract: Another communication apparatus reproducing a content stored in an external apparatus transmits an instruction for causing a communication apparatus to obtain the content stored in the external apparatus and reproduce the obtained content. Another communication apparatus also transmits a reproduction start timing of the content and information indicating a reproduction position of the content being reproduced by the another communication apparatus to the communication apparatus. If the received reproduction start timing has come, the communication apparatus starts reproducing the content. In starting to reproduce the content, the communication apparatus reproduces the content from a reproduction position at a subsequent time from the received reproduction position based on the reproduction start timing.

Abstract: Certain aspects of the present disclosure provide techniques for protecting high priority symbols from beam switching. In some aspects, a method comprises identifying potential beam switching time spots in a time interval. The method further comprises determining a time interval configuration of the time interval based on the identified potential beam switching time spots, wherein the time interval configuration protects one or more high priority symbols from beam switching at the potential beam switching time spots. The method further comprises transmitting the time interval configuration to a user equipment (UE).

Abstract: Disclosed are a method for transmitting and receiving data in a wireless communication system and a device therefor. Specifically, a method for transmitting and receiving, by a user equipment, data in a wireless communication system supporting a short transmission time interval (TTI) may include: receiving, through at least one of a physical downlink control channel (PDCCH) depending on a radio frame structure based on a first TTI or a short PDCCH (sPDCCH) based on a second TTI, downlink control information related to the second TTI, wherein the number of symbols corresponding to the second TTI is smaller than the number of symbols corresponding to the first TTI; and receiving downlink data related to the second TTI through a short physical downlink shared channel (sPDSCH) depending on the radio frame structure based on the second TTI by using the downlink control information.

Abstract: In order to perform a RACH-less handover from a source base station to a target base station, a UE device generates a request that the target base station is to send a Media Access Control (MAC) message to the UE device. The request can be sent with a Radio Resource Control (RRC) Connection Reconfiguration Complete message. Alternatively, an RRC message sent from a UE device functions as an implicit request that the target base station is to send a MAC message to the UE device. The request can also be configured to specify a particular MAC Control Element that the target base station should send. The target base station transmits the requested MAC message, along with TA information, if required. The UE device determines when the handover has been completed, based at least partially on when the requested MAC message is received from the target base station.

Abstract: The terminal device can generate a monophonic signal of a specified frequency, and can transmit the monophonic signal by using a specified receive antenna or transmit antenna of the terminal device. The terminal device has a function of transmitting the monophonic signal of the designated frequency by using any specified antenna. Therefore, a measurement system for an antenna complex number pattern of the terminal device can accurately measure a complex number pattern of each antenna of the terminal device in a manner in which the terminal device transmits the monophonic signal of the specified frequency by using each receive antenna or transmit antenna. The measurement system can further obtain an accurate measurement result when a MIMO OTA performance test is performed on the terminal device according to the complex number patterns of all the antennas of the terminal device.

Abstract: A radio communication system includes one or more user terminals and one or more base stations that execute time division radio communication using a time division duplex (TDD) system. A radio frame is a radio communication resource used in the time division radio communication, and includes a downlink subframe that is a transmission period of a downlink signal, a special subframe including a guard period that is used neither for transmission of a downlink signal nor for transmission of an uplink signal, and an extended subframe that is used as either a transmission period of a downlink signal or a transmission period of an uplink signal, in accordance with a scheduling by the base station.

Abstract: A method and apparatus for triggering a transmission carrier reselection procedure due to high congestion level in a wireless communication system is provided. A wireless device, which selects a carrier and performs data transmission on the carrier, determines that a congestion level of the carrier is not below a threshold for carrier reselection, and triggers the carrier reselection.

Abstract: A method and apparatus are disclosed from the perspective of a first device for performing sidelink communication. In one embodiment, the first device includes a MAC CE in a MAC PDU, wherein if the MAC PDU comprises the MAC CE without data, SL HARQ feedback is disabled for the MAC PDU. The first device further includes sidelink data associated with a first sidelink logical channel in the MAC PDU, wherein the first sidelink logical channel is configured to enable sidelink HARQ feedback. The first device also sets or indicates enable SL HARQ feedback for the MAC PDU in a SCI, wherein the SCI schedules a sidelink transmission delivering the MAC PDU. Furthermore, the first device transmits the SCI and performs the sidelink transmission to a second device.

Abstract: A method for transmitting a signal in a wireless communication system is disclosed. To this end, any one of first category signals comprising a synchronization signal is mapped to a symbol having any one structure of a first resource structure and a second resource structure having mutually different symbol structures, and the mapped signal is transmitted, wherein any one of a time domain location and a frequency domain location in case the first category signal is mapped to a symbol having the first resource structure coincides with any one of a time domain location and a frequency domain location in case the first category signal is mapped to a symbol having the second resource structure.

Abstract: The invention concerns a method for receiving and a receiver configured to receive a radio signal carrying information, the radio signal including an overall frequency band having a first frequency sub band and a second frequency sub band. The receiver is further configured to receive during a first time period a first portion of the information carried by the radio signal in the first frequency sub band, and to receive during a second time period a second portion of the information carried by the radio signal in the second frequency sub band. The receiver is further configured to perform channel estimation of the first frequency sub band in order to determine a first phase and to perform channel estimation of the second frequency sub band in order to determine a second phase. The receiver is further configured to determine an overall phase basis of the radio signal using the first and second phases.

Abstract: Methods, systems, and devices for wireless communication are described. A base station may identify a semi-static resource allocation for a device (e.g., a user equipment (UE)). The resource allocation may be associated with autonomous transmissions from the device in an unlicensed radio frequency spectrum band. The base station may generate and provide a message for transmission to the device. The message may convey an indication of the resource allocation. The device may receive the message and use the resource allocation to identify a transmission schedule for the autonomous transmissions.

Abstract: A wireless device receives configuration parameters of an unlicensed cell. The wireless device may receive a DCI indicating a downlink assignment or a release of a SPS configuration. The wireless device may transmit a HARQ feedback, associated with the DCI, via the unlicensed cell. The transmission of the HARQ feedback may be based on multiplexing the HARQ feedback in a first HARQ feedback codebook and using one or more first unlicensed parameters, for transmission via the unlicensed cell, in response to the DCI being associated with a first priority. The transmission of the HARQ feedback may be based on multiplexing the HARQ feedback in a second HARQ feedback codebook and using one or more second unlicensed parameters, for transmission via the unlicensed cell, in response to the DCI being associated with a second priority.