Sharp Kabushiki Kaisha Corporation

Fg Innovation Company Limited

Huawei Technologies Co., Limited

Guangdong Oppo Mobile Telecommunications Corp., Ltd.

Snaptrack Incorporated

Miics & Partners Japan Co., Ltd.

Hidekazu Tsuboi

Shohei Yamada

Katsunari Uemura

Hiroki Takahashi

Takako Hori

Kazunari Yokomakura

Yasuyuki Kato

Masayuki Hoshino

Liqing Liu

Tatsushi Aiba

Toshizo Nogami

Daiichiro Nakashima

Kyosuke Inoue

Shoichi Suzuki

Takashi Onodera

Takuma Kawano

Kimihiko Imamura

Wahoh Oh

Shoichi Shitara

Wataru Ouchi

Taichi Miyake

Yasuhiro Hamaguchi

Renmao Liu

Chao Luo

Takashi Yoshimoto

Ningjuan Chang

Chongming Zhang

Hiroshi Katsuragawa

Waho Oh

Yoshiteru Matsushita

Takako Sanda

Kato Yasuyuki

Uemura Katsunari

Daiichirou Nakashima

Provided is a method applied to a terminal apparatus for communicating with a base station apparatus. The method includes the steps of: receiving a first RRC message including a parameter related to a first cell group from the base station apparatus; and transmitting a random access preamble in an SpCell of the first cell group, based on reception of the first RRC message. The random access preamble is transmitted in the SpCell, based on first information being included in the first RRC message and a time alignment timer, in a primary TA group of the first cell group, which is not running.

Terminal apparatus and method for performing random access procedures in carrier aggregation (CA) based networks

A terminal apparatus receives a first configuration and a second configuration that are applied to a second cell group and first information. The terminal apparatus performs reconfiguration using the first configuration in a case of receiving a first value as the first information. The terminal apparatus performs reconfiguration using the second configuration in a case of receiving a second value as the first information. The terminal apparatus does not reset MAC and reestablishes RLC in the second cell group in a case of performing reconfiguration based on the first information.

Terminal apparatus, base station apparatus, method, and integrated circuit

A terminal apparatus that communicates with a base station apparatus includes: a reception unit configured to receive a configuration of an initial uplink (UL) bandwidth part (BWP) and a configuration of an additional UL BWP via a radio resource control (RRC) message and receive a random access response (RAR) message including an RAR UL grant; and a transmission unit configured to transmit a physical uplink shared channel (PUSCH) in an active UL BWP, wherein one of the initial UL BWP and the additional UL BWP is activated as the active UL BWP, the PUSCH is scheduled by using the RAR UL grant, a first field included in the RAR UL grant is used to indicate frequency resource allocation of the PUSCH, and whether the first field is to be truncated or whether a bit is to be inserted into the first field is determined based on a bandwidth of the initial UL BWP.

Base station apparatus, terminal apparatus, and communication method

A terminal apparatus for communicating with a first terminal apparatus and a second terminal apparatus is responsible to relay communication between the first terminal apparatus and the second terminal apparatus. The terminal apparatus measures a sidelink Reference Signal Received Power (SL-RSRP) in each of communication with the first terminal apparatus and communication with the second terminal apparatus, and determines whether the two SL-RSRPs are equal to or greater than a threshold and notifies the first terminal apparatus that the first terminal apparatus and the second terminal apparatus are in proximity in a case that the two SL-RSRPs are determined to be equal to or greater than the threshold, and does not notify the first terminal apparatus that the first terminal apparatus and the second terminal apparatus are in proximity in a case that the two SL-RSRPs are not determined to be equal to or greater than the threshold.

Terminal apparatus, method, and integrated circuit

Provided is a terminal apparatus including a receiver configured to receive an RRC message including configuration information of an MBS from a base station apparatus, and a processing unit. The configuration information of the MBS includes MBS session information. The MBS session information includes PDU session information. The processing unit, based on initiation of reception of the MBS session by the terminal apparatus, establishes a radio bearer for the MBS, and performs processing of notifying a higher layer of a part or all of the MBS session information.

A terminal apparatus for communicating with a second terminal apparatus via a first terminal apparatus. The third terminal apparatus receives a sidelink transmission from the second terminal apparatus to the first terminal apparatus, measures a sidelink Reference Signal Received Power (SL-RSRP) from the received sidelink transmission, and determines whether the SL-RSRP is equal to or greater than a threshold, and notifies a higher layer that the second terminal apparatus is in proximity in a case that the SL-RSRP is determined to be equal to or greater than the threshold, and does not notify the higher layer that the second terminal apparatus is in proximity in a case that the SL-RSRP is not determined to be equal to or greater than the threshold.

A terminal apparatus for communicating with a base station apparatus is provided. The terminal apparatus includes a receiver configured to receive a Radio Resource Control (RRC) reconfiguration message including a parameter related to a first configuration from the base station apparatus, and a processing unit configured to perform configuration in accordance with the RRC reconfiguration message received. In a case that a first timer of an RRC protocol expires, a radio link failure of a source primary cell is not detected, and configuration related to Dual Active Protocol Stack (DAPS) handover is performed for the terminal apparatus, the processing unit reconfigures all of state variables configured for a Radio Link Control (RLC) entity of a Signaling Radio Bearer (SRB) in the source primary cell to respective initial values, resumes the SRB suspended in the source primary cell, and transmits an RRC message for notifying the base station apparatus that the DAPS handover has failed.

Terminal apparatus, base station apparatus, and method to perform configuration according to radio resource control reconfiguration message

A terminal apparatus for communicating with a base station apparatus is provided. The terminal apparatus includes a receiver configured to receive, from the base station apparatus, a Radio Resource Control (RRC) reconfiguration message including a parameter related to first configuration, and a processing unit configured to perform configuration in accordance with the RRC reconfiguration message received. In a case that a first timer of an RRC protocol expires, a radio link failure of a source primary cell is not detected, and configuration related to Dual Active Protocol Stack (DAPS) handover is performed for the terminal apparatus, the processing unit stops all of timers configured for a Radio Link Control (RLC) entity of a Signaling Radio Bearer (SRB) in the source primary cell, resumes the SRB suspended in the source primary cell, and transmits an RRC message for notifying the base station apparatus that the DAPS handover has failed.

Terminal apparatus, base station apparatus, and method

A terminal apparatus for communicating with a base station apparatus includes a receiver configured to receive, from the base station apparatus, an RRC reconfiguration message including a first configuration related to a radio bearer to which a Dual Active Protocol Stack (DAPS) is applied, and a processing unit configured to perform configuration in accordance with the RRC reconfiguration message. In a case that a first timer expires, that no radio link failure is detected in a source primary cell, and that the first configuration is performed on any radio bearer, the processing units releases a configuration for a target primary cell, resets MAC for the target primary cell, discards all data of a PDCP entity for a SRB of the source primary cell, discards all data of an RLC entity for the SRB of the source primary cell, resumes the SRB suspended in the source primary cell, and transmits, to the base station apparatus, an RRC message for notifying that a DAPS handover is unsuccessful.

A terminal apparatus determines whether to delete all entries included in an entry list held by the terminal apparatus in a case that an RRC connection reconfiguration is performed, deletes all entries included in the entry list in a case that it is determined to delete all entries included in the entry list, and does not delete one or more entries included in the entry list in a case that it is determined not to delete all entries included in the entry list.

A base station apparatus for communicating with a terminal apparatus transmits a Radio Resource Control (RRC) connection reconfiguration request message including a Data Radio Bearer (DRB) configuration to the terminal apparatus. The DRB configuration includes a DRB identity and a Packet Data Convergence Protocol Layer (PDCP) entity configuration corresponding to the DRB identity. PDCP entity configuration information includes one of a PDCP entity configuration for Evolved Universal Terrestrial Radio Access (E-UTRA) and a PDCP entity configuration for New Radio (NR). A PDCP entity is established in accordance with the PDCP entity configuration information.

User equipment and a master E-UTRAN node B

A terminal apparatus that communicates with one or multiple base station apparatuses includes: a receiver configured to receive an RRC connection reconfiguration message including a DRB configuration from a base station apparatus of the one or multiple base station apparatuses; and a processing unit configured to associate an DRB that is established with an EPS bearer identity included in information of a DRB configuration in a case that information indicating that a full configuration is applied is included in the RRC connection reconfiguration message received by the receiver, a DRB identity included in the information of the DRB configuration is not present in a part of a current configuration of the terminal apparatus, and an LTE PDCP entity is established in the DRB that is established and has the DRB identity.

Radio bearer establishment in wireless communication networks

A terminal apparatus includes a receiver configured to receive, from the base station apparatus, an RRC reconfiguration message including a DRB configuration, and a processing unit, wherein the processing unit performs, based on inclusion of a first parameter in the DRB configuration, configuration of a PDCP entity of a DRB corresponding to the DRB configuration, the configuration being related to a DAPS handover.

A terminal apparatus and a base station apparatus efficiently communicate with each other. A terminal apparatus receives a first DCI and determines transmission of a first PUSCH. The first PUSCH is scheduled by the first DCI, a value of a first PUSCH procedure preparation time for the first PUSCH is a first value in a case that a first condition is not satisfied, and the value of the first PUSCH procedure preparation time is a value acquired by adding a second value to the first value in a case that the first condition is satisfied. The terminal apparatus determines the transmission of the first PUSCH in a case that a number of symbols between the first DCI and the first PUSCH is equal to or greater than a number of symbols corresponding to the value of the first PUSCH procedure preparation time.

A terminal apparatus includes: a reception unit configured to receive an RRC reconfiguration message including a DRB configuration and a processing unit, wherein the processing unit establishes an SDAP entity based on conditions that a DRB identity included in the DRB configuration is not part of a configuration of the terminal apparatus, an SDAP configuration is included in the DRB configuration, and an SDAP entity corresponding to a PDU session information element included in the SDAP configuration does not exist, and indicates establishment of a user-plane resource for a PDU session to an upper layer based on an additional condition that the SDAP entity corresponding to the PDU session information element does not exist before the RRC reconfiguration message is received.

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Sakai, Japan

Hidekazu Tsuboi