公开(公告)号：US20240073683A1

公开(公告)日：2024-02-29

申请号：US18386807

申请日：2023-11-03

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Noamen Ben Henda ,  Christine Jost ,  Karl Norrman ,  Monica Wifvesson

IPC: H04W12/041 ,  H04L9/40 ,  H04W12/0433 ,  H04W36/00 ,  H04W36/14 ,  H04W36/38 ,  H04W48/20 ,  H04W60/02

CPC classification number: H04W12/041 ,  H04L63/062 ,  H04W12/0433 ,  H04W36/0038 ,  H04W36/14 ,  H04W36/385 ,  H04W48/20 ,  H04W60/02 ,  H04L2463/061

Abstract: The present disclosure relates to methods and apparatus for flexible, security context management during AMF changes. One aspect of the disclosure is a mechanism for achieving backward security during AMF changes in idle mode. Instead of passing the current NAS key to the target AMF, the source AMF derives a new NAS key, provides the new NAS key to the target AMF, along with a key change indication indicating that the NAS key has changed. The target AMF sends the key change indication to the user equipment.

公开(公告)号：US11917055B2

公开(公告)日：2024-02-27

申请号：US17366098

申请日：2021-07-02

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Inventor： Rolf Blom ,  Gunnar Mildh ,  Karl Norrman

IPC: H04L9/08 ,  H04W8/20 ,  H04W12/041 ,  H04W12/0471 ,  H04W92/10 ,  H04L9/40

CPC classification number: H04L9/083 ,  H04L9/0816 ,  H04L9/0869 ,  H04L63/062 ,  H04W8/20 ,  H04W12/041 ,  H04W12/0471 ,  H04L2209/24 ,  H04L2209/80 ,  H04L2463/061 ,  H04W92/10

Abstract: A method in a User Equipment (UE) of an Evolved Packet System (EPS) establishes a security key (K_eNB) for protecting Radio Resource Control/User Plane (RRC/UP) traffic exchanged with a serving eNodeB. The method comprises sending a Non-Access Stratum (NAS) Service Request to a Mobility Management Entity (MME), the request indicating a NAS uplink sequence number (NAS_U_SEQ). The method further comprises receiving an indication of the NAS_U_SEQ of the NAS Service Request sent to the MME, back from the MME via the eNodeB. The method further comprises deriving the K_eNB from at least the received indication of the NAS_U_SEQ and from a stored Access Security Management Entity-key (K_ASME) shared with said MME.

公开(公告)号：US11792025B2

公开(公告)日：2023-10-17

申请号：US16471973

申请日：2017-02-10

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Karl Norrman ,  Elena Dubrova ,  Bernard Smeets

IPC: H04L9/32 ,  G06F7/58 ,  H04L9/08 ,  H04W12/06 ,  H04W12/12

CPC classification number: H04L9/3278 ,  G06F7/588 ,  H04L9/0866 ,  H04W12/06 ,  H04W12/12 ,  H04L2209/12

Abstract: A method of verifying that a first device and a second device are physically interconnected is disclosed. The method is performed by a verifier and includes sending a challenge R1 to the first device, for use as basis for input to a first physical unclonable function, PUF, —part of the first device, receiving, a response, RES1, from the second device, the response RES1 being based on an output of a second PUF part of the second device, and verifying that the first device and the second device are interconnected for the case that the received response, RES1, and an expected response fulfills a matching criterion. A method in a first device and a method in a second device and corresponding devices, computer programs and computer program products are also disclosed.

公开(公告)号：US11516659B2

公开(公告)日：2022-11-29

申请号：US16002786

申请日：2018-06-07

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Vesa Lehtovirta ,  Karl Norrman ,  Monica Wifvesson

IPC: H04W12/06 ,  H04W76/10 ,  H04W4/80 ,  H04W4/06 ,  H04W12/0431 ,  H04W8/00 ,  H04W12/04

Abstract: There is provided a method for authentication in device to device discovery. A method performed by a Discoverer device, comprises broadcasting a direct discovery request, receiving a direct discovery response from a Discoveree device, the direct discovery response comprising a first token, and the Discoverer device using the first token to verify that the Discoveree device is authorized to respond to the direct discovery request.

公开(公告)号：US20220086706A1

公开(公告)日：2022-03-17

申请号：US17533684

申请日：2021-11-23

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Inventor： Prajwol Kumar Nakarmi ,  Karl Norrman ,  Monica Wifvesson

IPC: H04W36/00 ,  H04W76/25 ,  H04L5/00 ,  H04W8/08 ,  H04W12/04 ,  H04W48/16

Abstract: Core network equipment is configured for use in a core network of a wireless communication system. The core network equipment is configured to switch switching to using a new non-access stratum, NAS, security context between a user equipment and the core network equipment. The core network equipment is also configured to, during or in association with a handover procedure for handover of the user equipment, signal from the core network equipment that the new NAS security context between the user equipment and the core network equipment is to be used as a basis for an access stratum (AS) security context between the user equipment and radio access network equipment.

公开(公告)号：US11039307B2

公开(公告)日：2021-06-15

申请号：US16464408

申请日：2017-12-29

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Prajwol Kumar Nakarmi ,  Enrique Cobo Jimenez ,  Mats Näslund ,  Karl Norrman

IPC: H04W12/02 ,  H04W68/02 ,  H04W12/72

Abstract: A wireless device (16) configured to receive from a network node (20) a page (18) that includes a paging identifier (18A) 4 for the wireless device (16). The paging identifier (18A) may identify as a target of the page (18) a wireless device (16) associated with a particular subscriber. In fact, in some embodiments, the paging identifier (18A) is based on an encrypted subscription identifier for the wireless device (16) or is a pseudonym subscription identifier for the wireless device (16). In any event, the wireless device (16) is also configured to transmit to the network node (20) a response (22) to the page (18) that indicates the wireless device (16) was paged but that includes an identifier for the wireless device (16) that is different than the paging identifier (18A) included in the page (18).

公开(公告)号：US11032701B2

公开(公告)日：2021-06-08

申请号：US16674681

申请日：2019-11-05

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Osman Nuri Can Yilmaz ,  Icaro L. J. Da Silva ,  Karl Norrman ,  Paul Schliwa-Bertling ,  Stefan Wager

IPC: H04L29/06 ,  H04W12/04 ,  H04W60/00 ,  H04W12/10 ,  H04W12/08 ,  H04W74/08 ,  H04W88/06 ,  H04W8/04

Abstract: The present disclosure generally relates to the field of security context setup. More specifically, the present disclosure relates to techniques of supporting security context setup in a wireless communication network. A method embodiment relates to supporting security context setup in a wireless communication network, the method comprising initiating (S304), by a radio access network (RAN) element of the wireless communication network, Access Stratum (AS) security context setup for a first Radio Access Technology (RAT) and a second RAT in a common signaling procedure.

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：US10855441B2

公开(公告)日：2020-12-01

申请号：US15781260

申请日：2015-12-18

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Inventor： Karl Norrman ,  Jari Arrko ,  Elena Dubrova ,  Mats Näslund

IPC: H04L29/06 ,  H04L9/06 ,  H04W12/02 ,  G06F21/62 ,  H04W12/00

Abstract: A method (40) of generating a pseudonym associated with a communication device (11) is disclosed. The method (40) is performed in a network node (13) of a communications system (10) and comprises generating (41) a pseudonym embryo based on one or more elements of a sequence (S1, S2, . . . , Sn), obtaining (42) the pseudonym as output of a masking operation applied to the pseudonym embryo, wherein the masking operation comprises a one-to-one mapping, and transmitting (43) the pseudonym to the communication device (11). A corresponding network node (13), computer program and computer program product are also disclosed.