公开(公告)号：US20200275479A1

公开(公告)日：2020-08-27

申请号：US16646653

申请日：2018-10-26

申请人： Telefonaktiebolaget LM Ericsson (publ)

发明人： Janne PEISA ,  Jan CHRISTOFFERSSON ,  Asbjörn GRÖVLEN ,  Johan RUNE

IPC分类号： H04W74/00 ,  H04W74/04 ,  H04W74/08

摘要： According to some embodiments, a method in a wireless device of performing random access comprises receiving a random access configuration. The random access configuration comprises one or more associations of a synchronization signal block (SSB), a preamble sequence, and physical random access channel (PRACH) configuration resources. The PRACH resources comprise time domain resources and frequency domain resources. The method further comprises receiving one or more SSBs; selecting one of the one or more received SSBs; and selecting a preamble sequence. The preamble sequence is associated with the selected SSB in the random access configuration. The method further comprises transmitting the selected preamble sequence on PRACH resources associated with the selected SSB in the random access configuration. In particular embodiments, more than one SSB is associated with identical PRACH resources, and the preamble sequence associated with each of the more than one SSBs identifies the SSB with respect to the PRACH resources.

公开(公告)号：US20190110234A1

公开(公告)日：2019-04-11

申请号：US16211399

申请日：2018-12-06

申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

发明人： Janne PEISA ,  Icaro L. J. DA SILVA

IPC分类号： H04W36/00

摘要： In accordance with particular embodiments, there is disclosed herein a method performed by a wireless device for handover. The method comprises receiving a first handover message from a source network node associated with a source cell. The first handover message comprises an identification of a target cell and access information associated with the target cell. The target cell is different than the source cell and comprises one or more beams. The method also includes identifying at least one beam from among the one or more beams of the target cell. The at least one beam is identified based on the identification of the target cell and the access information from the first handover message. The method further includes accessing the target cell using the identified at least one beam.

公开(公告)号：US20180062795A1

公开(公告)日：2018-03-01

申请号：US15803331

申请日：2017-11-03

申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

发明人： Johan TORSNER ,  Janne PEISA

IPC分类号： H04L1/18

摘要： The present invention relates to retransmissions in a communications system. A method and system of reducing uplink retransmission delay of a radio communications system by introducing an uplink MAC ARQ layer of Node B is disclosed. Further, a MAC PDU data indicator for soft combining control in Node B and RLC PDU reordering is introduced.

公开(公告)号：US20170105151A1

公开(公告)日：2017-04-13

申请号：US15384650

申请日：2016-12-20

申请人： Telefonaktiebolaget LM Ericsson (publ)

发明人： Janne PEISA ,  Tao CUI ,  Ingrid NORDSTRAND ,  Mats SÅGFORS ,  Sven EKEMARK

IPC分类号： H04W36/00 ,  H04W8/24

CPC分类号： H04W36/0072 ,  H04W8/245 ,  H04W88/02 ,  H04W88/08

摘要： Methods and arrangements in a base station and a User Equipment are provided. The methods and arrangements relates to the scenario when the UE is handed over from a source base station to a target base station in a handover scenario, and wherein the target base station may not support functionalities which the source base station and the UE support. The method in the UE comprises receiving (501) a configuration message from the target base station via the source base station, configuring (502) the UE based on the received configuration message from the target base station by searching (503) for a second field in an information element of the received configuration message. The presence /non-presence or a value of the second field is indicative of how to manage a configured first functionality associated with an optional first field, wherein the configured first functionality may not be supported by the target base station.