公开(公告)号：US10827398B2

公开(公告)日：2020-11-03

申请号：US16040926

申请日：2018-07-20

申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

发明人： Hyun Seo Park ,  Eun Kyung Kim ,  Tae Joong Kim ,  An Seok Lee ,  Yu Ro Lee ,  Hyun Lee ,  Hee Soo Lee

IPC分类号： H04W36/00 ,  H04W36/30

摘要： An operation method of a terminal includes receiving configuration information from a serving base station; measuring channel states of the serving base station and a target base station; when a difference between received signal strengths of the serving base station and the target base station is not less than a handover preparation offset, determining that a handover preparation event has occurred and transmitting a measurement report message to the serving base station; and when the difference is equal to or greater than a handover execution offset, determining that a handover execution event has occurred and transmitting a handover indication message informing of execution of a handover to the target base station. The channel state is normal state, abnormal state, or RLF state, and the configuration information indicates a different handover preparation offset and a different handover execution event according to the channel state.

公开(公告)号：US10433352B2

公开(公告)日：2019-10-01

申请号：US15800835

申请日：2017-11-01

申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

发明人： Seung Kwon Cho ,  Seok Ki Kim ,  Won Ik Kim ,  Eun Kyung Kim ,  Jae Heung Kim ,  Jae Su Song ,  Sung Pil Shin ,  Sei Yun Shin ,  Mi Young Yun ,  Soo Jung Jung ,  Yun Hee Cho ,  Tae Joong Kim ,  Seung Kwon Baek

IPC分类号： H04W76/12 ,  H04W28/02 ,  H04W40/24 ,  H04W56/00 ,  H04W8/26 ,  H04W36/00 ,  H04W84/18 ,  H04W88/08

摘要： An operation method of a first communication node, which controls a plurality of communication nodes included in a mobile xhaul network supporting mobility, may comprise performing an attach procedure between the first communication node and a second communication node among the plurality of communication nodes; configuring a path for communications between the second communication node and a third communication node for which attach procedure has been completed among the plurality of communication nodes; and supporting communications of the second communication node and the third communication node using the configured path.

公开(公告)号：US11039357B2

公开(公告)日：2021-06-15

申请号：US15984159

申请日：2018-05-18

申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

发明人： Hyun Seo Park ,  Hyun Lee ,  Tae Joong Kim ,  Hee Soo Lee ,  Yu Ro Lee ,  Eun Kyung Kim ,  An Seok Lee

IPC分类号： H04W36/08 ,  H04W36/00 ,  H04W74/08 ,  H04B7/06 ,  H04W88/08

摘要： An operation method of a terminal, for a handover in a mobile communication system, may comprise performing measurement on beams of a target base station, and transmitting a measurement result of at least one beam of the target base station to a source base station; receiving, from the source base station, a handover command message including information on at least one RACH resource for the at least one beam; transmitting a handover indication message including information on at least one random access target beam having an order of channel conditions determined based on a latest measurement to the source base station and to the target base station through the source base station; and determining an optimal beam among the at least one random access target beam, and transmitting a RACH to the target base station through a RACH resource allocated to the optimal beam.

公开(公告)号：US10263679B2

公开(公告)日：2019-04-16

申请号：US15877182

申请日：2018-01-22

申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

发明人： Eun Kyung Kim ,  Seung Kwon Baek

IPC分类号： H04L27/00 ,  H04B7/06

摘要： Disclosed are a method and an apparatus for performing communications based on multiple antennas in a communication network. An operation method performed in a multi-antenna performing beamforming in a communication network according to the present disclosure may comprise selecting a beamformer generating a transmission beam for transmitting data to a plurality of communication nodes included in the communication network among a plurality of beamformers included in the multi-antenna; selecting at least one antenna panel corresponding to each of the plurality of communication nodes among a plurality of antenna panels included in the selected beamformer; configuring parameters for respectively allocating independent transmission beams to the plurality of communication nodes based on the selected at least one antenna panel; and transmitting data to the plurality of communication nodes using transmission beams through the plurality of antenna panels based on the configured parameter.

公开(公告)号：US10999035B2

公开(公告)日：2021-05-04

申请号：US16204212

申请日：2018-11-29

申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

发明人： Heesoo Lee ,  Eun Kyung Kim ,  Tae Joong Kim ,  Hyun Seo Park ,  An Seok Lee ,  Yu Ro Lee ,  Hyun Lee

IPC分类号： H04L5/00 ,  H04B7/0413 ,  H04B17/336 ,  H04W72/04

摘要： An operation method of a terminal in a non-orthogonal multiple access (NOMA) based communication system includes receiving information on a NOMA resource sequence allocated by a base station from the base station; and transmitting data to the base station by using a NOMA resource indicated by the information on the NOMA resource sequence in each data symbol or each data symbol group. Also, the NOMA resource sequence may indicate at least one NOMA resource in a NOMA resource set.