Lg Electronics Inc.

Other

Electronics and Telecommunications Research Institute

Korea Institute of Machinery & Materials

Korea Electrotechnology Research Institute

Sunghoon Jung

Youngdae Lee

Seungjune Yi

Sungjun Park

Jaewook Lee

Sangwon Kim

Sungduck Chun

Hanbyul Seo

Sunyoung Lee

Hongsuk Kim

Taehun Kim

Laeyoung Kim

Jaehyun Kim

Jongwoo Hong

Hyunjung Choe

Gwanmo Ku

Oanyong Lee

Seungmin Lee

Hyunsook Kim

Jinsook Ryu

Heejeong Cho

Gyeongcheol Lee

Jian Xu

Heejin Kim

Daewook Byun

Hyukjin Chae

Jongyoul Lee

Young Dae Lee

Sung Jun Park

Hakseong Kim

Seokjung Kim

Geumsan Jo

Kyungjun Lee

Kijun Kim

Byounghoon Kim

Jinwoo Kim

Jaeho Hwang

Dongsoo Kim

Ki-Dong Lee

Sangwook Han

Jayeong Kim

Yujin Noh

Aby Kanneath Abraham

Seungmoon Shin

Yunjung Yi

Joonkui Ahn

Kyungmin Park

Seung June Yi

Eunjong Lee

Seungryul Yang

Sangwoo Kim

Seoyoung Back

Taehyeon Kim

Jeong Ik Lee

Doo-Hee Cho

Jun-Han Han

Jonghee Lee

Sunhee Kim

Seungjin Ahn

Geon-woong Lee

Joondong Lee

Wonyong Yoon

Do-Geun Kim

Youndae Lee

Harikrishnan Jayachandran

Naveen Kumar Mandepudi

Joong-Tak Han

The present disclosure relates to a failure recovery in wireless communications. According to an embodiment of the present disclosure, a method performed by a wireless device served by a master node (MN) and a secondary node (SN) in a dual connectivity (DC) in a wireless communication system comprises: receiving information for a timer related to a fast master cell group (MCG) recovery and a conditional mobility attempt configuration; starting the timer related to the fast MCG recovery upon detecting a MCG failure; and based on detecting an expiry of the timer related to the fast MCG recovery: removing one or more conditional mobility commands stored in the wireless device; and initiating a transmission of a radio resource control (RRC) re-establishment request message.

Method and apparatus for failure recovery in wireless communication system

The present disclosure relates to handling a resource collision between multiple networks in wireless communications. According to an embodiment of the present disclosure, a method performed by a wireless device in a wireless communication system comprises: performing a registration procedure to be registered in a first network and a second network; receiving, from the second network, timing information related to the second network comprising a time period; and performing an idle mode operation in the first network in the time period while skipping to monitor scheduling information for the second network in the time period, wherein the idle mode operation comprises at least one of: monitoring a paging; performing a random access; or performing an idle mode measurement.

Method and apparatus for handling resource collision between multiple networks in wireless communication system

The present disclosure relates to handling a secondary cell group (SCG) failure in wireless communications. According to an embodiment of the present disclosure, a method performed by a wireless device in a wireless communication system comprises: receiving, from a source primary secondary cell (PSCell), a conditional mobility command including a mobility condition for a target PSCell; initiating a secondary cell group (SCG) failure recovery procedure and transmitting SCG failure information related to the SCG failure recovery procedure to a primary cell (PCell), based on detecting an SCG failure related to the source PSCell; based on that the mobility condition for the target PSCell is satisfied during the SCG failure recovery procedure: transmitting, to the PCell, a new PSCell indication informing a mobility from the source PSCell to the target PSCell; and performing a random access to the target PSCell for the mobility.

Method and apparatus for handling secondary cell group failure in wireless communication system

The present disclosure relates to handling a master cell group (MCG) failure in wireless communications. According to an embodiment of the present disclosure, a method performed by a wireless device in a wireless communication system comprises: receiving, from a source primary cell (PCell), a conditional mobility command including a mobility condition for a target PCell; starting a timer for a master cell group (MCG) failure recovery and transmitting MCG failure information related to the MCG failure recovery to a primary secondary cell (PSCell), based on detecting a radio link failure (RLF) on the source PCell; and based on that the mobility condition for the target PCell is satisfied while the timer is running: transmitting, to the PSCell, a new PCell indication informing a mobility from the source PCell to the target PCell; and performing a random access to the target PCell for the mobility.

Method and apparatus for handling master cell group failure in wireless communication system

A method and apparatus for suspending measurement with measurement configuration in a wireless communication system is provided. A wireless device receives, from a first cell, measurement configuration including a measurement frequency list and a suspension cell list. A wireless device perform measurements on at least one frequency included in the measurement frequency list. A wireless device moves to a second cell from the first cell. A wireless device stops the measurements and keeps the measurement configuration, based on determining that the second cell is included in the suspension cell list.

Method and apparatus for suspending measurement with measurement configuration in a wireless communication system

The present disclosure relates to a target cell selection for mobility. According to an embodiment of the present disclosure, a user equipment (UE) may apply an adjustment value to a mobility metric of a cell to obtain an effective mobility metric of the cell. The adjustment value may be related to a remaining service time for one or more cells. The UE may perform a mobility based on the effective mobility metric of the cell.

Target cell selection for mobility

A method and apparatus for switching between unicast and multicast in a wireless communication system is provided. A DU of a RAN node provides the MBS by using a first transmission to the wireless device. A DU of a RAN node receives, from the wireless device, feedback information in response to the provided MBS. A DU of a RAN node transmits, to a central unit (CU) of the RAN node, a first switching message based on the received feedback information. A DU of a RAN node receives, from the CU, a second switching message to switch the first transmission to the second transmission for the MBS. A DU of a RAN node provides the MBS by using the second transmission to the wireless device.

Method and apparatus for switching between unicast and multicast in a wireless communication system

A method and apparatus for transmitting assistant information for a quick switch between broadcast and unicast transmission in a wireless communication system is provided. A wireless device receives, from a network, a service via unicast. A wireless device detects reception of the service via multicast and/or broadcast while receiving the service via unicast. A wireless device informs the network of the reception of the service via the multicast and/or the broadcast.

Method and apparatus for transmitting assistant information for a quick switch between broadcast and unicast transmission in a wireless communication system

A method and apparatus for determining to switch between unicast and multicast in a wireless communication system is provided. A CU of a RAN node provides, via the DU, the MBS by using a first transmission to the wireless device. A CU of a RAN node receives, from the DU, measurement report for the MBS generated by the wireless device. A CU of a RAN node determines whether to switch the first transmission to a second transmission for the MBS based on the measurement report. A CU of a RAN node provides, via the DU, the MBS by using the second transmission to the wireless device.

Method and apparatus for determining to switch between unicast and multicast in a wireless communication system

A method and apparatus for reporting data transmission procedure failure for network optimization in a wireless communication system is provided. A wireless device performs the data transmissions to a network in idle state and/or inactive state. A wireless device detects failures of the data transmissions. A wireless device logs information related to each of the failures and counts a number of the failures, while the logging validity timer is running. A wireless device establishes or resumes a connection with the network based on that the counted number is equal to or bigger than a threshold value.

Method and apparatus for reporting data transmission procedure failure for network optimization in a wireless communication system

A method and apparatus for handling failures in transmission using PUR in a wireless communication system is provided. A wireless device receives, from a network, preconfigured uplink resource (PUR) configuration. A wireless device detects that each resource of the PUR is not successfully used for uplink (UL) transmission. A wireless device informs the failure cause and/or the expected behavior based on the PUR configuration. A wireless device receives, from a network, reconfiguration of the PUR.

Method and apparatus for handling failures in transmission using PUR in a wireless communication system

The present disclosure relates to mobility in dual connectivity (DC) in wireless communications. According to an embodiment of the present disclosure, a method performed by a wireless device in a wireless communication system comprises: receiving, from a network, a plurality of conditional mobility commands, each of the plurality of conditional mobility commands comprising a respective trigger type; identifying, among the plurality of conditional mobility commands, one or more conditional mobility commands comprising a trigger type corresponding to a secondary cell group (SCG) configuration status of the wireless device; and performing an evaluation of one or more target cells related to the one or more conditional mobility commands.

Method and apparatus for mobility in dual connectivity in wireless communication system

The present disclosure relates to a mobility handling in wireless communications. According to an embodiment of the present disclosure, a method performed by a wireless device in a wireless communication system comprises: receiving, from a network, a conditional mobility command for a target cell including a mobility condition, and a legacy mobility command; initiating a legacy mobility procedure upon receiving the legacy mobility command; and stopping an evaluation of the mobility condition during the legacy mobility procedure after the legacy mobility procedure is initiated.

Method and apparatus for mobility handling in wireless communication system

A method and apparatus for selective connection establishment for a broadcast-multicast service in a wireless communication system is provided. A wireless device receives bandwidth information for a broadcast-multicast service. A wireless device determines whether a connection to receive the broadcast-multicast service is required or not, based on the bandwidth information. A wireless device receives the broadcast-multicast service based on the determination.

Method and apparatus for selective connection establishment for a broadcast-multicast service in a wireless communication system

The present disclosure relates to mobility execution in wireless communications. According to an embodiment of the present disclosure, a method performed by a wireless device in a wireless communication system comprises: receiving a measurement configuration comprising at least one time to trigger (TTT) comprising a first TTT; receiving a conditional mobility command related to a target cell, wherein the conditional mobility command comprises a mobility condition for which a first measurement quantity and a second measurement quantity are configured; and accessing to the target cell based on that the mobility condition is satisfied for the first measurement quantity for at least the first TTT and the mobility condition is satisfied for the second measurement quantity for at least a time duration, wherein the mobility condition is satisfied for the first measurement quantity earlier than for the second measurement quantity, and wherein the time duration is shorter than the first TTT.

Method and apparatus for mobility execution in wireless communication system

Growing community of inventors

Seoul, South Korea

Sunghoon Jung