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公开(公告)号：US20200014548A1
公开(公告)日：2020-01-09
申请号：US16518805
申请日：2019-07-22
Applicant: NEC Corporation
Inventor： Xiaowei ZHANG , Anand Raghawa PRASAD
Abstract: In order for charging SDT and MTC device trigger over control plane, there is provided a network node (40) that relays messages over a control plane (T5 and Tsp) between an MTC device (10) and an SCS (50). The network node (40) counts the number of messages successfully relayed, and generates a CDR in accordance with the counted number. The messages are SDT messages delivered from the MTC device (10) to the SCS (50), SDT messages delivered from the SCS (50) to the MTC device (10), or MTC device trigger messages delivered from the SCS (50) to the MTC device (10). The network node (40) transfers the CDR to an OCF (31) or a CDF (32).
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公开(公告)号：US20190089802A1
公开(公告)日：2019-03-21
申请号：US16126435
申请日：2018-09-10
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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公开(公告)号：US20190069204A1
公开(公告)日：2019-02-28
申请号：US16146694
申请日：2018-09-28
Applicant: NEC Corporation
Inventor： Xiaowei ZHANG , Anand Raghawa PRASAD
Abstract: There is provided a network system including one or more first MMEs (30), and a second MME (40) separated from the first MMEs (30). In one of operation cases, the first MME (30) pushes, to the second MME (40), security context for a UE (10) that attaches to the first MME (30). The second MME (40) stores the security context. The first MME (30) further pushes the latest security context to the second MME (40), during a switch-off procedure for the first MME (30). The second MME (40) updates the stored security context with the latest security context. The first MME (30) pulls the security context from the second MME (40), when the UE (10) re-attaches to the first MME (30) or is handovered from different one of the first MMEs (30).
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公开(公告)号：US20190037486A1
公开(公告)日：2019-01-31
申请号：US16152214
申请日：2018-10-04
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：US20180152432A1
公开(公告)日：2018-05-31
申请号：US15829127
申请日：2017-12-01
Applicant: NEC Corporation
Inventor： Xiaowei ZHANG , Anand Raghawa PRASAD
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).
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Patent Agency Ranking
公开(公告)号：US20180041926A1
公开(公告)日：2018-02-08
申请号：US15549269
申请日：2016-02-02
Applicant: NEC Corporation
Inventor： Xiaowei ZHANG , Anand Raghawa PRASAD
CPC classification number: H04W36/0038 , H04L63/083 , H04W8/12 , H04W8/30 , H04W12/04 , H04W12/06 , H04W36/22
Abstract: There is provided a network system including one or more first MMEs (30), and a second MME (40) separated from the first MMEs (30). In one of operation cases, the first MME (30) pushes, to the second MME (40), security context for a UE (10) that attaches to the first MME (30). The second MME (40) stores the security context. The first MME (30) further pushes the latest security context to the second MME (40), during a switch-off procedure for the first MME (30). The second MME (40) updates the stored security context with the latest security context. The first MME (30) pulls the security context from the second MME (40), when the UE (10) re-attaches to the first MME (30) or is handovered from different one of the first MMEs (30).
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公开(公告)号：US20170359322A1
公开(公告)日：2017-12-14
申请号：US15667900
申请日：2017-08-03
Applicant: NEC Corporation
Inventor： Xiaowei ZHANG , Anand Raghawa PRASAD
Abstract: A method of performing authentication and authorization in Proximity based Service (ProSe) communication by a requesting device (31) which sends a request of a communication and a receiving device (32) which receives the request from the requesting device (31) and (32), the method including deriving session keys Kpc and Kpi from an unique key Kp at the requesting and receiving devices (31) and (32), using the session keys Kpc and Kpi for ProSe communication setup and direct communication between the requesting and receiving devices (31) and (32), starting the direct communication with the requesting and receiving devices (31) and (32). The key Kpc is confidentiality key and the key Kpi is integrity protection key.
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公开(公告)号：US20170324754A1
公开(公告)日：2017-11-09
申请号：US15655179
申请日：2017-07-20
Applicant: NEC Corporation
Inventor： Xiaowei ZHANG , Anand Raghawa PRASAD
Abstract: A method of forming a secure group in ProSe communication includes requesting a service request to a ProSe server from a requesting device (21), the service request indicating a request to communicate with a receiving device (22) from the requesting device (21), performing verification on the requesting and receiving devices (21) and (22) by the ProSe server 24, sending a ProSe Service Result to the requesting and receiving devices (21) and (22) to inform to be allowed a group member, and starting a group security establishment of the group including the requesting and receiving devices (21) and (22)
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公开(公告)号：US20170195305A1
公开(公告)日：2017-07-06
申请号：US15375032
申请日：2016-12-09
Applicant: NEC Corporation
Inventor： Xiaowei ZHANG , Anand Raghawa PRASAD
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).
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公开(公告)号：US20160381543A1
公开(公告)日：2016-12-29
申请号：US14900305
申请日：2014-06-13
Applicant: NEC CORPORATION
Inventor： Xiaowei ZHANG , Anand Raghawa PRASAD
Abstract: A method of performing a secure discovery of devices in ProSe communication by a requesting device (21) and the receiving device (22), including requesting a ProSe service request to a ProSe server (24) from the requesting device, performing verification on the requesting and receiving devices by the ProSe server, performing a discovery procedure by the ProSe server to obtain location information of the receiving device, and sending a ProSe service result to the requesting device. The performing discovery procedure includes sending the ProSe service request to a receiving device, performing source verification to see if the request is from an authorized ProSe server and checking discovery criteria to see whether the discovery criteria should have the requested service by the receiving device, and sending a accept message to the ProSe server, if the performing source verification and the checking discovery criteria are successful.
Abstract translation: 一种执行由请求设备（21）和接收设备（22）进行的ProSe通信中的设备的安全发现的方法，包括从请求设备向ProSe服务器（24）请求ProSe服务请求，对请求者进行验证 以及由ProSe服务器接收设备，由ProSe服务器执行发现过程以获得接收设备的位置信息，以及向请求设备发送ProSe服务结果。 执行发现过程包括向接收设备发送ProSe服务请求，执行源验证以查看请求是否来自授权的ProSe服务器，并检查发现标准，以查看发现标准是否应具有接收设备所请求的服务;以及 如果执行源验证和检查发现标准成功，则向ProSe服务器发送接受消息。
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