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公开(公告)号：US20170019821A1
公开(公告)日：2017-01-19
申请号：US15124406
申请日：2015-03-03
Applicant: NEC Corporation
Inventor： Xiaowei ZHANG , Anand Raghawa PRASAD
IPC: H04W36/00
CPC classification number: H04W36/0055 , H04W36/0038 , H04W36/0069 , H04W88/06
Abstract: A UE (10) provides information on potential S′eNB(s). The information is forwarded from an MeNB (20_1) to an M′eNB (20_2) such that the M′eNB (20_2) can determine, before the handover happens, whether the M′eNB (20_2) will configure a new SeNB (S′eNB) and which S′eNB the M′eNB (20_2) will configure. In one of options, the MeNB (20_1) derives a key S′-KeNB for communication protection between the UE (10) and the S′eNB (30_1), and send the S′-KeNB to the M′eNB (20_2). In another option, the M′eNB (20_2) derives the S′-KeNB from a key KeNB* received from the MeNB (20_1). The M′eNB (20_2) sends the S′-KeNB to the S′eNB (30_1). Moreover, there are also provided several variations to perform SeNB Release, SeNB Addition, Bearer Modification and the like, in which the order and/or timing thereof can be different during the handover procedure.
Abstract translation: UE（10）提供关于潜在S'NB的信息。 信息从MeNB（20_1）转发到M'NB（20_2），使得M'eNB（20_2）可以在切换发生之前确定M'eNB（20_2）是否将配置新的SeNB（S 'eNB）和M'eNB（20_2）将配置的S'eNB。 在一个选项中，MeNB（20_1）导出用于UE（10）和S'eNB（30_1）之间的通信保护的密钥S'-KeNB，并将S'-KeNB发送到M'NB（20_2） 。 在另一选择中，M'eNB（20_2）从从MeNB（20_1）接收的密钥KeNB *导出S'-KeNB。 M'eNB（20_2）将S'-KeNB发送到S'NB（30_1）。 此外，还提供了用于执行SeNB释放，SeNB添加，承载修改等的几种变型，其中顺序和/或定时在切换过程期间可以不同。
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公开(公告)号：US20160164875A1
公开(公告)日：2016-06-09
申请号：US14900358
申请日：2014-06-13
Applicant: NEC CORPORATION
Inventor： Xiaowei ZHANG , Anand Raghawa PRASAD
IPC: H04L29/06
CPC classification number: H04L63/101 , H04L63/062 , H04L63/065 , H04L63/0869 , H04W12/04031 , H04W12/06 , H04W12/08 , H04W76/14
Abstract: A secure system 1 includes a requesting device (L01) which requests a communication, and a receiving device (L03) which receives a communication request from the requesting device (L01). The requesting device (L01) and the receiving device (L03) are members of a specific group when the requesting device (L01) discovers the receiving device (L03). The requesting device (L01) is allowed to communicate with the requesting device (L01) by a network used by the specific group or by the receiving device upon a proof being provided by a network used by the specific group, the devices (L01) and (L03) being able to perform a mutual authentication over a direct wireless interface, or the receiving device (L03) checking a list maintained by a user on members of the specific group of devices for ProSe service purpose.
Abstract translation: 安全系统1包括请求通信的请求设备（L01）和从请求设备（L01）接收通信请求的接收设备（L03）。 当请求设备（L01）发现接收设备（L03）时，请求设备（L01）和接收设备（L03）是特定组的成员。 允许请求设备（L01）通过特定组使用的网络或接收设备通过由特定组使用的网络提供的证明来与请求设备（L01）进行通信，设备（L01）和 （L03）能够通过直接无线接口执行相互认证，或者接收设备（L03）检查由用户维护的用于ProSe服务目的的特定设备组成员的列表。
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公开(公告)号：US20210029523A1
公开(公告)日：2021-01-28
申请号：US17067311
申请日：2020-10-09
Applicant: NEC Corporation
Inventor： Xiaowei ZHANG , Anand Raghawa PRASAD , Andreas KUNZ , Genadi VELEV , Toshiyuki TAMURA
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.
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公开(公告)号：US20200374361A1
公开(公告)日：2020-11-26
申请号：US16990141
申请日：2020-08-11
Applicant: NEC Corporation
Inventor： Xiaowei ZHANG , Anand Raghawa PRASAD
Abstract: In order for efficiently managing communications between a UE (10) and multiple SCSs (20_1-20_n), the UE (10) includes, in one message, multiple pieces of data to be transmitted to the SCSs (20_1-20_n), and sends the message to an MTC-IWF (30). The MTC-IWF (30) receives the message from the UE (10), and distributes the date to the SCSs (20_1-20_n). Each of the SCSs sends (20_1-20_n), to the MTC-IWF (30), data to be transmitted to the UE (10) and an indicator that indicates for the SCSs (20_1-20 n) the time tolerance until the data is transmitted to the UE (10). The MTC-IWF (30) receives the data and the indicators from the SCSs (20_1-20_n), and determines when to forward the data to the UE (10) based on the indicators.
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15.发明申请公开(公告)号：US20200351613A1
公开(公告)日：2020-11-05
申请号：US16929919
申请日：2020-07-15
Applicant: NEC Corporation
Inventor： Xiaowei ZHANG , Anand Raghawa PRASAD
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.
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Patent Agency Ranking
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
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.
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17.发明申请公开(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
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.
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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
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).
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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
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).
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公开(公告)号：US20190281521A1
公开(公告)日：2019-09-12
申请号：US16413643
申请日：2019-05-16
Applicant: NEC CORPORATION
Inventor： Xiaowei ZHANG , Anand Raghawa Prasad
Abstract: An SeNB informs an MeNB that it can configure bearers for the given UE. At this time, the MeNB manages the DRB status, and then sends a key S-KeNB to the SeNB. The MeNB also sends a KSI for the S-KeNB to both of the UE and the SeNB. After this procedure, the MeNB informs an EPC (MME and S-GW) about the new bearer configured at the SeNB, such that the S-GW 50 can start offloading the bearer(s) to the SeNB 30. Prior to the offloading, the EPC network entity (MME or S-GW) performs verification that: 1) whether the request is coming from authenticated source (MeNB); and 2) whether the SeNB is a valid eNB to which the traffic can be offload.
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