公开(公告)号：US20210352541A1

公开(公告)日：2021-11-11

申请号：US17381642

申请日：2021-07-21

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Oumer Teyeb ,  Angelo Centonza ,  Fredrik Gunnarsson ,  Niklas Johansson ,  Stefan Wager ,  Pontus Wallentin

IPC: H04W36/00 ,  H04W36/24

Abstract: Example embodiments presented herein are directed towards a wireless terminal and base station, and corresponding methods therein, for providing a handover for a subset of bearers associated with the wireless terminal. The subset of bearers is less than a total number of bearers associated with the wireless terminal. Thus, upon the completion of the handover procedure, at least one bearer will stay connected with a source base station.

公开(公告)号：US20210126726A1

公开(公告)日：2021-04-29

申请号：US17139409

申请日：2020-12-31

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Stefan Parkvall ,  Janne Peisa ,  Gunnar Mildh ,  Robert Baldemair ,  Stefan Wager ,  Jonas Kronander ,  Karl Werner ,  Richard Abrahamsson ,  Ismet Aktas ,  Peter Alriksson ,  Junaid Ansari ,  Shehzad Ali Ashraf ,  Henrik Asplund ,  Fredrik Athley ,  Håkan Axelsson ,  Joakim Axmon ,  Johan Axnäs ,  Kumar Balachandran ,  Gunnar Bark ,  Jan-Erik Berg ,  Andreas Bergström ,  Håkan Björkegren ,  Nadia Brahmi ,  Cagatay Capar ,  Anders Carlsson ,  Andreas Cedergren ,  Mikael Coldrey ,  Icaro L. J. da Silva ,  Erik Dahlman ,  Ali el Essaili ,  Ulrika Engström ,  Mårten Ericson ,  Erik Eriksson ,  Mikael Fallgren ,  Rui Fan ,  Gabor Fodor ,  Pål Frenger ,  Jonas Fridén ,  Jonas Fröberg Olsson ,  Anders Furuskär ,  Johan Furuskog ,  Virgile Garcia ,  Ather Gattami ,  Fredrik Gunnarsson ,  Ulf Gustavsson ,  Bo Hagerman ,  Fredrik Harrysson ,  Ning He ,  Martin Hessler ,  Kimmo Hiltunen ,  Songnam Hong ,  Dennis Hui ,  Jörg Huschke ,  Tim Irnich ,  Sven Jacobsson ,  Niklas Jaldén ,  Simon Järmyr ,  Zhiyuan Jiang ,  Niklas Johansson ,  Martin Johansson ,  Du Ho Kang ,  Eleftherios Karipidis ,  Patrik Karlsson ,  Ali S. Khayrallah ,  Caner Kilinc ,  Göran N. Klang ,  Sara Landström ,  Christina Larsson ,  Gen Li ,  Lars Lindbom ,  Robert Lindgren ,  Bengt Lindoff ,  Fredrik Lindqvist ,  Jinhua Liu ,  Thorsten Lohmar ,  Qianxi Lu ,  Lars Manholm ,  Ivana Maric ,  Jonas Medbo ,  Qingyu Miao ,  Reza Moosavi ,  Walter Müller ,  Elena Myhre ,  Karl Norrman ,  Bengt-Erik Olsson ,  Torgny Palenius ,  Sven Petersson ,  Jose Luis Pradas ,  Mikael Prytz ,  Olav Queseth ,  Pradeepa Ramachandra ,  Edgar Ramos ,  Andres Reial ,  Thomas Rimhagen ,  Emil Ringh ,  Patrik Rugeland ,  Johan Rune ,  Joachim Sachs ,  Henrik Sahlin ,  Vidit Saxena ,  Nima Seifi ,  Yngve Selén ,  Eliane Semaan ,  Sachin Sharma ,  Cong Shi ,  Johan Sköld ,  Magnus Stattin ,  Anders Stjernman ,  Dennis Sundman ,  Lars Sundström ,  Miurel Isabel Tercero Vargas ,  Claes Tidestav ,  Sibel Tombaz ,  Johan Torsner ,  Hugo Tullberg ,  Jari Vikberg ,  Peter von Wrycza ,  Thomas Walldeen ,  Pontus Wallentin ,  Hai Wang ,  Ke Wang Helmersson ,  Jianfeng Wang ,  Yi-Pin Eric Wang ,  Niclas Wiberg ,  Emma Wittenmark ,  Osman Nuri Can Yilmaz ,  Ali Zaidi ,  Zhan Zhang ,  Zhang Zhang ,  Yanli Zheng

IPC: H04J11/00 ,  H04B7/0452 ,  H04L29/06 ,  H04L5/00 ,  H04L5/14 ,  H04W4/00 ,  H04W8/18 ,  H04B7/08 ,  H04W72/12 ,  H04W74/08 ,  H04W74/02

Abstract: Methods and apparatus in a fifth-generation wireless communications, including an example method, in a wireless device, that includes receiving a downlink signal comprising an uplink access configuration index, using the uplink access configuration index to identify an uplink access configuration from among a predetermined plurality of uplink access configurations, and transmitting to the wireless communications network according to the identified uplink access configuration. The example method further includes, in the same wireless device, receiving, in a first subframe, a first Orthogonal Frequency-Division Multiplexing (OFDM) transmission formatted according to a first numerology and receiving, in a second subframe, a second OFDM transmission formatted according to a second numerology, the second numerology differing from the first numerology. Variants of this method, corresponding apparatuses, and corresponding network-side methods and apparatuses are also disclosed.

公开(公告)号：US10938497B2

公开(公告)日：2021-03-02

申请号：US16714350

申请日：2019-12-13

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Stefan Parkvall ,  Janne Peisa ,  Gunnar Mildh ,  Robert Baldemair ,  Stefan Wager ,  Jonas Kronander ,  Karl Werner ,  Richard Abrahamsson ,  Ismet Aktas ,  Peter Alriksson ,  Junaid Ansari ,  Shehzad Ali Ashraf ,  Henrik Asplund ,  Fredrik Athley ,  Håkan Axelsson ,  Joakim Axmon ,  Johan Axnäs ,  Kumar Balachandran ,  Gunnar Bark ,  Jan-Erik Berg ,  Andreas Bergström ,  Håkan Björkegren ,  Nadia Brahmi ,  Cagatay Capar ,  Anders Carlsson ,  Andreas Cedergren ,  Mikael Coldrey ,  Icaro L. J. da Silva ,  Erik Dahlman ,  Ali el Essaili ,  Ulrika Engström ,  Mårten Ericson ,  Erik Eriksson ,  Mikael Fallgren ,  Rui Fan ,  Gabor Fodor ,  Pål Frenger ,  Jonas Fridén ,  Jonas Fröberg Olsson ,  Anders Furuskär ,  Johan Furuskog ,  Virgile Garcia ,  Ather Gattami ,  Fredrik Gunnarsson ,  Ulf Gustavsson ,  Bo Hagerman ,  Fredrik Harrysson ,  Ning He ,  Martin Hessler ,  Kimmo Hiltunen ,  Songnam Hong ,  Dennis Hui ,  Jörg Huschke ,  Tim Irnich ,  Sven Jacobsson ,  Niklas Jaldén ,  Simon Järmyr ,  Zhiyuan Jiang ,  Niklas Johansson ,  Martin Johansson ,  Du Ho Kang ,  Eleftherios Karipidis ,  Patrik Karlsson ,  Ali S. Khayrallah ,  Caner Kilinc ,  Göran N. Klang ,  Sara Landstrom ,  Christina Larsson ,  Gen Li ,  Lars Lindbom ,  Robert Lindgren ,  Bengt Lindoff ,  Fredrik Lindqvist ,  Jinhua Liu ,  Thorsten Lohmar ,  Qianxi Lu ,  Lars Manholm ,  Ivana Maric ,  Jonas Medbo ,  Qingyu Miao ,  Reza Moosavi ,  Walter Müller ,  Elena Myhre ,  Karl Norrman ,  Bengt-Erik Olsson ,  Torgny Palenius ,  Sven Petersson ,  Jose Luis Pradas ,  Mikael Prytz ,  Olav Queseth ,  Pradeepa Ramachandra ,  Edgar Ramos ,  Andres Reial ,  Thomas Rimhagen ,  Emil Ringh ,  Patrik Rugeland ,  Johan Rune ,  Joachim Sachs ,  Henrik Sahlin ,  Vidit Saxena ,  Nima Seifi ,  Yngve Selén ,  Eliane Semaan ,  Sachin Sharma ,  Cong Shi ,  Johan Sköld ,  Magnus Stattin ,  Anders Stjernman ,  Dennis Sundman ,  Lars Sundström ,  Miurel Isabel Tercero Vargas ,  Claes Tidestav ,  Sibel Tombaz ,  Johan Torsner ,  Hugo Tullberg ,  Jari Vikberg ,  Peter von Wrycza ,  Thomas Walldeen ,  Pontus Wallentin ,  Hai Wang ,  Ke Wang Helmersson ,  Jianfeng Wang ,  Yi-Pin Eric Wang ,  Niclas Wiberg ,  Emma Wittenmark ,  Osman Nuri Can Yilmaz ,  Ali Zaidi ,  Zhan Zhang ,  Zhang Zhang ,  Yanli Zheng

IPC: H04W4/00 ,  H04W74/08 ,  H04L5/14 ,  H04J11/00 ,  H04B7/0452 ,  H04B7/08 ,  H04L5/00 ,  H04L29/06 ,  H04W8/18 ,  H04W74/02 ,  H04W72/12

Abstract: Methods and apparatus in a fifth-generation wireless communications, including an example method, in a wireless device, that includes receiving a downlink signal comprising an uplink access configuration index, using the uplink access configuration index to identify an uplink access configuration from among a predetermined plurality of uplink access configurations, and transmitting to the wireless communications network according to the identified uplink access configuration. The example method further includes, in the same wireless device, receiving, in a first subframe, a first Orthogonal Frequency-Division Multiplexing (OFDM) transmission formatted according to a first numerology and receiving, in a second subframe, a second OFDM transmission formatted according to a second numerology, the second numerology differing from the first numerology. Variants of this method, corresponding apparatuses, and corresponding network-side methods and apparatuses are also disclosed.

公开(公告)号：US20200260502A1

公开(公告)日：2020-08-13

申请号：US16864203

申请日：2020-05-01

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Xingqin Lin ,  Ansuman Adhikary ,  Asbjörn Grövlen ,  Dennis Hui ,  Niklas Johansson ,  Yutao Sui ,  Mårten Sundberg ,  Yi-Pin Eric Wang

IPC: H04W74/08 ,  H04W72/04 ,  H04W74/00 ,  H04L27/26

Abstract: An example method in a user equipment comprises generating a random access preamble signal and transmitting the random access preamble signal. This generating of the random access preamble signal comprises generating a random access preamble signal comprising two or more consecutive preamble symbol groups, each preamble symbol group comprising a cyclic prefix portion and a plurality of identical symbols occupying a single subcarrier of the random access preamble signal. The single subcarrier for at least one of the preamble symbol groups corresponds to a first subcarrier frequency and the single subcarrier for an immediately subsequent one of the preamble symbol groups corresponds to a second subcarrier frequency.

公开(公告)号：US10554366B2

公开(公告)日：2020-02-04

申请号：US15747503

申请日：2016-07-22

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Xingqin Lin ,  Ansuman Adhikary ,  Niklas Johansson ,  Yi-Pin Eric Wang

IPC: H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04W74/08

Abstract: A method in a user equipment (110) is disclosed. The method comprises generating (504) a narrowband random access preamble for a narrowband random access procedure, the narrowband random access preamble comprising a Zadoff-Chu sequence. The method comprises transmitting (508), to a network node (115), the generated narrowband random access preamble via a narrowband physical random access channel (PRACH) (210, 305) according to a narrowband PRACH format, wherein the narrowband PRACH (210, 305) is frequency multiplexed with a physical uplink shared channel (PUSCH) (215, 315) and comprises: at least one narrowband PRACH slot (410) having a narrowband PRACH slot duration; and a narrowband PRACH period (205).

公开(公告)号：US20190150109A1

公开(公告)日：2019-05-16

申请号：US16242782

申请日：2019-01-08

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Xingqin Lin ,  Ansuman Adhikary ,  Niklas Johansson ,  Yi-Pin Eric Wang

IPC: H04W56/00 ,  H04J11/00 ,  H04L5/00

CPC classification number: H04W56/001 ,  H04J11/0069 ,  H04L5/001 ,  H04W4/70 ,  H04W48/12 ,  H04W56/0015 ,  H04W88/08

Abstract: Systems and methods relating to a narrowband Primary Synchronization Signal (NB-PSS) and a narrowband Secondary Synchronization Signal (NB-SSS) are disclosed. In some embodiments, a base station in a wireless network comprises a processor and storage that stores instructions executable by the processor whereby the base station is operable to transmit a NB-PSS and a NB-SSS in a narrowband portion of a downlink system bandwidth. The NB-PSS and the NB-SSS are transmitted such that more than two occurrences of the NB-PSS and more than two occurrences of the NB-SSS are transmitted over a defined time interval, each occurrence of the NB-PSS is transmitted over multiple contiguous Orthogonal Frequency Division Multiplexing (OFDM) symbols and each occurrence of the NB-SSS is transmitted over multiple contiguous OFDM symbols, and each occurrence of the NB-SSS provides an indication of a location of the occurrence of the NB-SSS within the defined time interval.

公开(公告)号：US10069666B2

公开(公告)日：2018-09-04

申请号：US15736258

申请日：2016-07-12

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Xingqin Lin ,  Asbjörn Grövlen ,  Niklas Johansson ,  Yi-Pin Eric Wang ,  Christian Hoymann

IPC: H04B15/00 ,  H04L27/26 ,  H04B7/04 ,  H04L25/02 ,  H04B1/10

CPC classification number: H04L27/2647 ,  H04B1/10 ,  H04B7/04 ,  H04L25/02 ,  H04L27/2607 ,  H04L27/2626

Abstract: Systems and methods relating to a transceiver architecture that maintains legacy timing by inserting and removing a cyclic prefix at a legacy sampling rate are disclosed. In some embodiments, a system for a receiver comprises an upsampling subsystem, a cyclic prefix removal unit, and a downsampling subsystem. The upsampling subsystem is operable to process a first baseband receive signal that is at a first sampling rate to generate an upsampled baseband receive signal at a second sampling rate that is greater than the first sampling rate. The cyclic prefix removal unit is operable to remove a cyclic prefix from the upsampled baseband receive signal to provide a second baseband receive signal at the second sampling rate. The downsampling subsystem is operable to process the second baseband receive signal to generate a downsampled baseband receive signal at the first sampling rate. In this manner, complexity and power consumption are reduced.

公开(公告)号：US09998250B2

公开(公告)日：2018-06-12

申请号：US15004234

申请日：2016-01-22

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Inventor： Ansuman Adhikary ,  Niklas Johansson ,  Yi-Pin Eric Wang

IPC: H04W4/00 ,  H04J11/00 ,  H04W56/00 ,  H04L27/26 ,  H04B1/7083 ,  H04J13/00 ,  H04W48/16

CPC classification number: H04J11/0069 ,  H04B1/7083 ,  H04J13/0022 ,  H04J2011/0096 ,  H04L27/2602 ,  H04L27/2656 ,  H04L27/2657 ,  H04L27/2675 ,  H04W48/16 ,  H04W56/0015 ,  H04W56/0055

Abstract: A method in a wireless device is disclosed. The method comprises receiving a synchronization signal from a network node, the received synchronization signal comprising a synchronization sequence, a cell ID sequence, and a frame index indication sequence. The method further comprises estimating a time offset of the received synchronization signal using the synchronization sequence, and estimating a frequency offset of the received synchronization signal using the synchronization sequence. The method further comprises detecting a cell ID of a cell associated with the network node using the estimated time offset and the estimated frequency offset, and detecting a frame number using the estimated time offset, the estimated frequency offset, and the detected cell ID of the cell associated with the network node.

公开(公告)号：US09942026B2

公开(公告)日：2018-04-10

申请号：US15004275

申请日：2016-01-22

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Inventor： Ansuman Adhikary ,  Niklas Johansson ,  Yi-Pin Eric Wang

IPC: H04L7/00 ,  H04W4/06 ,  H04W4/00 ,  H04L27/00 ,  H04L27/26

CPC classification number: H04L7/0037 ,  H04L27/0014 ,  H04L27/2657 ,  H04L2027/0034 ,  H04L2027/0095 ,  H04W4/06 ,  H04W4/70

Abstract: A method in a node is disclosed. The method comprises receiving a signal, and obtaining a first oversampled received signal by sampling the received signal according to a symbol rate. The method further comprises estimating a first frequency offset based on the first oversampled received signal, the first frequency offset estimated using an estimation range limited to one of a bandwidth of the received signal or the symbol rate of the received signal, and obtaining a second oversampled received signal by sampling the received signal according to N times the symbol rate, wherein N is greater than 1. The method further comprises estimating a true frequency offset based on the first frequency offset estimate and the second oversampled received signal.

公开(公告)号：US09912453B2

公开(公告)日：2018-03-06

申请号：US15294640

申请日：2016-10-14

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Erik Dahlman ,  Magnus Frodigh ,  Anders Furuskar ,  Niklas Johansson ,  Stefan Parkvall

IPC: H04B1/04 ,  H04B7/26 ,  H04L5/00 ,  H04W16/14 ,  H04W72/08 ,  H04L29/06 ,  H04W72/10 ,  H04W72/12 ,  H04W72/04 ,  H04W88/06

CPC classification number: H04L5/0032 ,  H04B1/0475 ,  H04B7/26 ,  H04L69/28 ,  H04W16/14 ,  H04W72/0406 ,  H04W72/0413 ,  H04W72/0453 ,  H04W72/082 ,  H04W72/10 ,  H04W72/1215 ,  H04W88/06

Abstract: A first User Equipment (UE), a second UE, a first Radio Network Node (RNN), and methods therein for controlling interference between transmissions in a first system and transmissions in a second system. The first system comprises the first UE and the first RNN serving the first UE. The second system comprises the second UE and a second RNN serving the second UE. The first system has a first priority in a first part of a shared spectrum and the second system has a second priority in the first part of the shared spectrum, wherein the first priority is higher than the second priority. The method in the first UE comprises transmitting a signal to a second RNN that is to perform a downlink transmission to the second UE, which signal is configured to control the transmission of the second RNN.