公开(公告)号：US11877149B2

公开(公告)日：2024-01-16

申请号：US17275980

申请日：2019-09-13

Applicant: Apple Inc.

Inventor： Alexandre Saso Stojanovski ,  Robert Zaus ,  Farid Adrangi ,  Raimund Wloka ,  Abhijeet Ashok Kolekar ,  Ahmed Soliman

IPC: H04W12/037 ,  H04W12/121 ,  H04W12/106 ,  H04L9/30 ,  H04W12/06 ,  H04W48/18 ,  H04W60/00 ,  H04W84/04

CPC classification number: H04W12/037 ,  H04L9/30 ,  H04W12/06 ,  H04W12/106 ,  H04W12/121 ,  H04W48/18 ,  H04W60/00 ,  H04L2209/34 ,  H04L2209/80 ,  H04W84/042

Abstract: Systems and methods of protecting an initial NAS message are described. Depending on whether a security context for a serving PLMN is stored, the UE uses either a public key from the serving PLMN or a key from the security context to encrypt parts of the initial NAS message. An initial NAS message containing the encrypted parts is then sent to an AMF of the serving PLMN. The serving PLMN public key is transmitted via a SIB. Prior to transmission of the initial NAS message or in parallel with it, an RRC message is sent to the base station. The RRC message contains the UE identifier and/or a NSSAI encrypted using the serving PLMN public key.

公开(公告)号：US20220078599A1

公开(公告)日：2022-03-10

申请号：US17530776

申请日：2021-11-19

Applicant: Apple Inc.

Inventor： Vivek G. Gupta ,  Abhijeet Ashok Kolekar ,  Farid Adrangi

IPC: H04W8/04 ,  H04W8/16 ,  H04W76/38 ,  H04W76/50 ,  H04W36/00 ,  H04W76/27 ,  H04W12/06 ,  H04W12/102 ,  H04W12/108

Abstract: Systems and methods of providing steering of roaming (SOR) information in a 5G VPLMN are described. A UE receives a REGISTRATION ACCEPT message from an AMF of the VPLMN during initial or mobility registration of the UE in the VPLMN and DL NAS TRANSPORT message thereafter. The message has a Payload container information element (IE) set to secured packet. The SOR information indicates a list of preferred PLMN/access technology combinations, which is uploaded to a memory after a successful security check to verify that the list of preferred PLMN/access technology combinations is provided by the UDM of the HPLMN and is not tampered with by the VPLMN. When the message also contains a request for acknowledgment of successful security check of the list of preferred PLMN/access technology combinations, the UE transmits to the AMF the acknowledgment in a REGISTRATION COMPLETE or a DL NAS TRANSPORT message.

公开(公告)号：US11863975B2

公开(公告)日：2024-01-02

申请号：US17290757

申请日：2019-10-30

Applicant: Apple Inc.

Inventor： Alexandre Saso Stojanovski ,  Robert Zaus ,  Farid Adrangi ,  Raimund Wloka ,  Abhijeet Ashok Kolekar ,  Ahmed Soliman ,  Sudeep K. Palat

IPC: H04L29/06 ,  H04W12/037 ,  H04W12/0431 ,  H04W12/041 ,  H04L9/30 ,  H04W48/10 ,  H04W74/08 ,  H04W84/04

CPC classification number: H04W12/037 ,  H04L9/30 ,  H04W12/041 ,  H04W12/0431 ,  H04W48/10 ,  H04L2209/80 ,  H04W74/0833 ,  H04W84/042

Abstract: Systems and methods of protecting an initial NAS message are described. The NAS message is encrypted using the home PLMN public key during initial registration with the network using a registration request message. An AMF of the serving PLMN sends a serving PLMN public key which is then used to encrypt information including an S-NSSAI of later initial NAS messages after initial registration is completed. The S-NSSAI may not be sent in the later initial NAS message if the S-NSSAI is provided at an access stratum level. The RRC message may contain an indication that the S-NSSAI is encrypted using the serving PLMN public key.

公开(公告)号：US11678191B2

公开(公告)日：2023-06-13

申请号：US17299532

申请日：2019-11-27

Applicant: Apple Inc.

Inventor： Bharat Shrestha ,  Jaemin Han ,  Abhijeet Ashok Kolekar

IPC: H04W12/106 ,  H04L9/08 ,  H04L9/32 ,  H04L47/34

CPC classification number: H04W12/106 ,  H04L9/0894 ,  H04L9/3242 ,  H04L47/34 ,  H04L2209/80

Abstract: Packet protection is described. Data of a group of packets is concatenated with a security key and a sequence number of the packet. A hash mark of the concatenated data is calculated and sent with data or control information in a packet. If each packet has reserved bits, at least some of the packets each has data, a least a portion of the hash mark, and a header having: a first bit that indicates if the hash mark is present, and a second bit that indicates if the packet is used to determine the hash mark. Otherwise, a separate control packet is sent that contains the hash mark, a first sequence number of the group of packets, and a PDU type indicating that the control packet is an integrity protection packet for the group of PDCP packets.

公开(公告)号：US11184756B2

公开(公告)日：2021-11-23

申请号：US16276968

申请日：2019-02-15

Applicant: Apple Inc.

Inventor： Vivek G. Gupta ,  Abhijeet Ashok Kolekar ,  Farid Adrangi

IPC: H04W8/04 ,  H04W8/06 ,  H04W8/16 ,  H04W76/38 ,  H04W76/50 ,  H04W36/00 ,  H04W76/27 ,  H04W12/06 ,  H04W12/102 ,  H04W12/108 ,  H04W84/04

Abstract: Systems and methods of providing steering of roaming (SOR) information in a 5G VPLMN are described. A UE receives a REGISTRATION ACCEPT message from an AMF of the VPLMN during initial or mobility registration of the UE in the VPLMN and DL NAS TRANSPORT message thereafter. The message has a Payload container information element (IE) set to secured packet. The SOR information indicates a list of preferred PLMN/access technology combinations, which is uploaded to a memory after a successful security check to verify that the list of preferred PLMN/access technology combinations is provided by the UDM of the HPLMN and is not tampered with by the VPLMN. When the message also contains a request for acknowledgment of successful security check of the list of preferred PLMN/access technology combinations, the UE transmits to the AMF the acknowledgment in a REGISTRATION COMPLETE or a DL NAS TRANSPORT message.