公开(公告)号：US20200344601A1

公开(公告)日：2020-10-29

申请号：US16961548

申请日：2019-01-09

Applicant: NEC CORPORATION

Inventor： Sheeba Backia Mary BASKARAN ,  Sivakamy LAKSHMINARAYANAN ,  Anand Raghawa PRASAD ,  Sivabalan ARUMUGAM ,  Hironori ITO ,  Takahito YOSHIZAWA

IPC: H04W12/02 ,  H04W12/00 ,  H04W12/06 ,  H04W12/04 ,  H04W12/10

Abstract: A communication terminal (10) includes control means for generating a subscription concealed identifier (SUCI) including a subscription permanent identifier (SUPI) concealed using a predetermined protection scheme, and a protection scheme identifier identifying the protection scheme, and transmission means for sending the SUCI to a first network apparatus during a registration procedure, the SUCI being sent for a second network apparatus to de-conceal the SUPI from the SUCI based on the protection scheme used to generate the SUCI.

公开(公告)号：US20200260286A1

公开(公告)日：2020-08-13

申请号：US16860855

申请日：2020-04-28

Applicant: NEC Corporation

Inventor： Xiaowei ZHANG ,  Anand Raghawa PRASAD ,  Andreas KUNZ ,  Genadi VELEV ,  Toshiyuki TAMURA

IPC: H04W12/12 ,  H04W76/14 ,  H04W4/70 ,  H04W8/12 ,  H04W12/10 ,  H04W12/04

Abstract: In order for making MTC more efficient and/or secure, a base station forming a communication system connects a UE to a core network. A node serves as an entering point to the core network for a service provider, and transmits traffic between the service provider and the UE. The node establishes, as a connection to the base station, a first connection for directly transceiving messages between the node and the base station. Alternatively, the node establishes a second connection for transparently transceiving the messages through a different node that is placed within the core network and has established a different secure connection to the base station.

公开(公告)号：US20200228327A1

公开(公告)日：2020-07-16

申请号：US16818905

申请日：2020-03-13

Applicant: NEC Corporation

Inventor： Xiaowei ZHANG ,  Anand Raghawa PRASAD

IPC: H04L9/08 ,  H04W8/08 ,  H04W8/00 ,  H04W4/02 ,  H04W12/04 ,  H04W12/08

Abstract: A mobile communication system includes a central processing unit coupled to a memory storing instructions for executing a User Equipment (UE) implemented by a transceiver and a controller that supports Proximity Services (ProSe), and a ProSe Function that supports the ProSe and communicates with the UE via a PC3 interface. The UE sends a message for a discovery to the ProSe Function via the PC3. The ProSe Function directly sends security information to the UE via the PC3. The UE directly sends a protected message to another UE on a PC5 interface using a key based on the security information.

公开(公告)号：US20200084196A1

公开(公告)日：2020-03-12

申请号：US16685937

申请日：2019-11-15

Applicant: NEC Corporation

Inventor： Xiaowei ZHANG ,  Anand Raghawa PRASAD

IPC: H04L29/06 ,  H04W12/06 ,  H04W12/10 ,  H04W12/08 ,  H04W4/70

Abstract: Upon receiving a triggering message from a MTC server (20), a network (10) verifies if the MTC server (20) is authorized to trigger a target MTC device (30) and also if the MTC device (30) is authorized to respond the triggering message, by comparing an MTC device ID and MTC server ID (and optionally information on subscription) which are include in the triggering message with authorized ones. Upon succeeding in the verification, the network (10) checks a trigger type included in the triggering message to verify if the triggering message is authorized to be sent to the MTC device (30). Upon succeeding in the check, the network (10) forwards the triggering message to the MTC device (30). The network (10) also validates a response from the MTC device (30), by checking whether the MTC device (30) is allowed to communicate with the addressed MTC server (20).

公开(公告)号：US20200014535A1

公开(公告)日：2020-01-09

申请号：US16494524

申请日：2018-03-16

Applicant: NEC CORPORATION

Inventor： Sheeba Backia Mary BASKARAN ,  Anand Raghawa PRASAD ,  Sivabalan ARUMUGAM ,  Sivakamy LAKSHMINARAYANAN ,  Hironori ITO ,  Andreas KUNZ

IPC: H04L9/32 ,  H04L12/04 ,  H04L12/06 ,  G06F7/58

Abstract: Provided is an authentication device capable of generating a master key suited to a UE in a 5GS. The authentication device (10) includes a communication unit (11) configured to, in registration processing of user equipment (UE), acquire UE key derivation function (KDF) capabilities indicating a pseudo random function supported by the UE, a selection unit (12) configured to select a pseudo random function used for generation of a master key related to the UE by use of the UE KDF capabilities, and a key generation unit (13) configured to generate a master key related to the UE by use of the selected pseudo random function.

公开(公告)号：US20190357135A1

公开(公告)日：2019-11-21

申请号：US16526560

申请日：2019-07-30

Applicant: NEC Corporation

Inventor： Xiaowei ZHANG ,  Toshiyuki TAMURA ,  Anand Raghawa PRASAD

IPC: H04W48/18 ,  H04W8/20 ,  H04W12/06 ,  H04W8/04

Abstract: In order for more effectively supporting a Dedicated Core Network, there is provided a network system including a first node (30) that establishes secure connection with a UE (10) initially attempting to attach to a network, through a radio base station (20), and a second node (40) to which the UE (10) is redirected from the first node (30) through the radio base station (20). Upon the redirection, the first node (30) sends information on the first node (30) itself to the second node (40) through the radio base station (20). The second node (40) uses the information to retrieve security context necessary for establishing the connection with the UE (10) from the first node (30).

公开(公告)号：US20190215317A1

公开(公告)日：2019-07-11

申请号：US16358401

申请日：2019-03-19

Applicant: NEC Corporation

Inventor： Xiaowei ZHANG ,  Anand Raghawa PRASAD

IPC: H04L29/06 ,  H04W12/08 ,  H04W12/10 ,  H04W12/06 ,  H04W4/70

CPC classification number: H04L63/08 ,  H04L63/0876 ,  H04L63/101 ,  H04L63/12 ,  H04L63/123 ,  H04L63/1416 ,  H04L63/20 ,  H04L63/205 ,  H04W4/70 ,  H04W12/06 ,  H04W12/08 ,  H04W12/10 ,  H04W68/00

Abstract: Upon receiving a triggering message from a MTC server (20), a network (10) verifies if the MTC server (20) is authorized to trigger a target MTC device (30) and also if the MTC device (30) is authorized to respond the triggering message, by comparing an MTC device ID and MTC server ID (and optionally information on subscription) which are include in the triggering message with authorized ones. Upon succeeding in the verification, the network (10) checks a trigger type included in the triggering message to verify if the triggering message is authorized to be sent to the MTC device (30). Upon succeeding in the check, the network (10) forwards the triggering message to the MTC device (30). The network (10) also validates a response from the MTC device (30), by checking whether the MTC device (30) is allowed to communicate with the addressed MTC server (20).

公开(公告)号：US20190028454A1

公开(公告)日：2019-01-24

申请号：US16144323

申请日：2018-09-27

Applicant: NEC Corporation

Inventor： Xiaowei ZHANG ,  Anand Raghawa PRASAD

IPC: H04L29/06 ,  H04W4/70 ,  H04W12/06 ,  H04W12/08 ,  H04W12/10 ,  H04W68/00

CPC classification number: H04L63/08 ,  H04L63/0876 ,  H04L63/101 ,  H04L63/12 ,  H04L63/123 ,  H04L63/1416 ,  H04L63/20 ,  H04L63/205 ,  H04W4/70 ,  H04W12/06 ,  H04W12/08 ,  H04W12/10 ,  H04W68/00

Abstract: Upon receiving a triggering message from a MTC server (20), a network (10) verifies if the MTC server (20) is authorized to trigger a target MTC device (30) and also if the MTC device (30) is authorized to respond the triggering message, by comparing an MTC device ID and MTC server ID (and optionally information on subscription) which are include in the triggering message with authorized ones. Upon succeeding in the verification, the network (10) checks a trigger type included in the triggering message to verify if the triggering message is authorized to he sent to the MTC device (30). Upon succeeding in the check, the network (10) forwards the triggering message to the MTC device (30). The network (10) also validates a response from the MTC device (30), by checking whether the MTC device (30) is allowed to communicate with the addressed. MTC server (20).

公开(公告)号：US20180041337A1

公开(公告)日：2018-02-08

申请号：US15551013

申请日：2016-02-12

Applicant: NEC Corporation

Inventor： Xiaowei ZHANG ,  Anand Raghawa PRASAD

IPC: H04L9/32 ,  H04L9/08 ,  H04W12/06 ,  H04W4/08

CPC classification number: H04L9/32 ,  H04L9/0816 ,  H04M3/38 ,  H04W4/08 ,  H04W4/70 ,  H04W12/06

Abstract: A communication system of the present invention includes: a representative communication terminal (20) belonging to a communication group (10) formed by a plurality of communication terminals; subordinate communication terminals (30) to (32) belonging to the communication group (10) and being separate from the representative communication terminal (20); and a node apparatus (40) exerting call processing control relating to the plurality of communication terminals belonging to the communication group (10). The representative communication terminal (20) and the subordinate communication terminals (30) to (32) have shared key information and shared SIM information. The representative communication terminal (20) transmits, to the subordinate communication terminals (30) to (32), part of information contained in authentication information received from the node apparatus (40), and executes authentication of the subordinate communication terminals (30) to (32) using the key information and the authentication information.

公开(公告)号：US20170245181A1

公开(公告)日：2017-08-24

申请号：US15512204

申请日：2015-09-16

Applicant: NEC Corporation

Inventor： Xiaowei ZHANG ,  Andreas KUNZ ,  Anand Raghawa PRASAD

IPC: H04W36/00 ,  H04W12/08 ,  H04W36/08 ,  H04W12/06 ,  H04W76/04 ,  H04W12/04

CPC classification number: H04W36/0038 ,  H04W12/04 ,  H04W12/06 ,  H04W12/08 ,  H04W36/0055 ,  H04W36/0069 ,  H04W36/08 ,  H04W76/27 ,  H04W88/06

Abstract: Upon requesting an MME (40) to handover a UE (10) to a Target MeNB (20_2), a Source MeNB (20_1) sends, to the Target MeNB (20_2) through the MME (40), information on one or more SeNBs that are candidates available for dual connectivity under control of the Target MeNB (20_2). The Target MeNB (20_2) configures a Target SeNB (30_2) that is selected based on the information to provide the dual connectivity. Alternatively, the Source MeNB (20_1) sends, to the Target MeNB (20_2), information on a Source SeNB (30_1) that has been used by the Source MeNB (20_1) for the dual connectivity. In this case, the Target MeNB (20_2) skips RRC configuration for the Source SeNB (30_1) upon the control.