公开(公告)号：US20200033889A1

公开(公告)日：2020-01-30

申请号：US16491437

申请日：2018-03-15

Applicant: NEC CORPORATION

Inventor： Atsushi NAKATA

IPC: G05D1/10 ,  G01C21/20 ,  B64C39/02 ,  B64D47/08

Abstract: In order to solve the problem in which a flight vehicle flies only in locations having poor communication quality and retained data cannot necessarily reach the ground, this device communicates with a flight vehicle, wherein the device is provided with: a storage means that associates and stores first position information and a first communication rate at which it is possible to communicate at the position of the first position information; an extraction means that, upon receiving information that corresponds to a prescribed second communication rate at which the flight vehicle transmits data, extracts the first position information corresponding to the first communication rate equal to or greater than the second communication rate from the storage means; and an output means that outputs the first position information extracted by the extraction means to the flight vehicle, or outputs the inputted first position information to an instrument that notifies the flight vehicle.

公开(公告)号：US20180049105A1

公开(公告)日：2018-02-15

申请号：US15729761

申请日：2017-10-11

Applicant: NEC Corporation

Inventor： Atsushi NAKATA ,  Yoshio UEDA

IPC: H04W48/08 ,  H04W36/00 ,  H04W36/04 ,  H04W84/04

CPC classification number: H04W48/08 ,  H04W36/0061 ,  H04W36/04 ,  H04W84/045 ,  H04W84/047

Abstract: A wireless communication system includes a first NodeB that forms a cell; and a relay apparatus to which the first NodeB connects and which relays data transmitted and received between the first NodeB and a core network. The first NodeB broadcasts identification information on the relay apparatus to which the first NodeB connects.

公开(公告)号：US20170289865A1

公开(公告)日：2017-10-05

申请号：US15507937

申请日：2015-09-09

Applicant: NEC Corporation

Inventor： Atsushi NAKATA ,  Yoshinori WATANABE

IPC: H04W36/00 ,  H04W36/08 ,  H04W16/32

CPC classification number: H04W36/0033 ,  H04W16/32 ,  H04W24/02 ,  H04W36/0011 ,  H04W36/04 ,  H04W36/08 ,  H04W84/045

Abstract: A communication apparatus according to the present invention is applied to a communication apparatus in a wireless communication system including a terminal, a first base station forming a first cell, and a second base station forming a second cell adjacent to the first cell. The communication apparatus includes: a communication status acquisition unit that acquires a communication status in the second base station; and a control unit that eliminates cell identifier duplication between a cell identifier of the second cell and a cell identifier of another cell based on the number of times that the second base station has received, from the terminal, a first message requesting for re-establishment of an RRC connection.

公开(公告)号：US20150319805A1

公开(公告)日：2015-11-05

申请号：US14651910

申请日：2013-12-09

Applicant: NEC Corporation

Inventor： Tomu TAMURA ,  Yoshio UEDA ,  Atsushi NAKATA

IPC: H04W88/16

CPC classification number: H04W88/16 ,  H04L67/2842 ,  H04W4/12 ,  H04W8/10 ,  H04W8/26 ,  H04W24/02

Abstract: An increase in communication load in a network due to increasing messages for requesting information is suppressed. When a message for requesting information and a response message thereto are sent and received between a communication device (N1-Nn) that is an information requester and an information provider (Nx) on a network (NW) via a communication device (1), the communication device (1) stores the information acquired from the response message in a response information storage section (4), and when any communication device requests at least part of the same information, a control section (5) creates a response message including the requested information and responds.

Abstract translation: 由于增加用于请求信息的消息，网络中的通信负载的增加被抑制。 当通过通信设备（1）在作为信息请求者的通信设备（N1-Nn）和网络（NW）上的信息提供者（Nx）之间发送和接收到用于请求信息和响应消息的消息时， 通信装置（1）将从响应消息获取的信息存储在响应信息存储部分（4）中，并且当任何通信装置请求至少部分相同信息时，控制部分（5）创建包括 请求信息并作出回应。

公开(公告)号：US20130189999A1

公开(公告)日：2013-07-25

申请号：US13749045

申请日：2013-01-24

Applicant: NEC CORPORATION

Inventor： Atsushi NAKATA

IPC: H04W16/24

CPC classification number: H04W16/24 ,  H04W16/32 ,  H04W24/10 ,  H04W52/16 ,  H04W52/241 ,  H04W52/242 ,  H04W52/245 ,  H04W52/325 ,  H04W52/40

Abstract: When one base station forms a plurality of cells that use different frequency bands, a handover caused by movement between cells can be successfully performed with a high probability. A radio base station adapted to communicate with a radio communication terminal, comprising: a communication unit which performs a first communication with the radio communication terminal by using a first frequency, wherein the communication unit performs a second communication with the communication terminal by using a second frequency that is different from the first frequency; and a controller which performs a control, of at least one of a first power of the first communication and a second power of the second communication, based on a first power-related quality of the first communication and a second power-related quality of the second communication.

公开(公告)号：US20250039704A1

公开(公告)日：2025-01-30

申请号：US18916851

申请日：2024-10-16

Applicant: NEC Corporation

Inventor： Atsushi NAKATA ,  Daisuke OGURA

IPC: H04W24/04 ,  H04W72/232 ,  H04W76/15 ,  H04W92/16

Abstract: In an architecture in which the inside of a radio access network is split into two layers and the processes are performed in separate apparatuses, respectively, to achieve the redundancy of the processes of the higher layer. A server apparatus 100 is a communication apparatus that comprises a first layer processing unit 141 configured to perform a process of a first layer in a radio access network, an establishing unit 143 configured to perform a process for establishing connections with two or more clients performing a process of a second layer, which is higher than the first layer, an obtaining unit 145 configured to obtain information related to a connection state with a first client performing the process of the second layer, and a communication processing unit 147 configured to transmit, to a second client, the information related to the connection state with the first client.

公开(公告)号：US20210329477A1

公开(公告)日：2021-10-21

申请号：US17269407

申请日：2019-08-01

Applicant: NEC Corporation

Inventor： Atsushi NAKATA ,  Daisuke OGURA

IPC: H04W24/04 ,  H04W76/15

Abstract: In an architecture in which the inside of a radio access network is split into two layers and the processes are performed in separate apparatuses, respectively, to achieve the redundancy of the processes of the higher layer. A server apparatus 100 is a communication apparatus that comprises a first layer processing unit 141 configured to perform a process of a first layer in a radio access network, an establishing unit 143 configured to perform a process for establishing connections with two or more clients performing a process of a second layer, which is higher than the first layer, an obtaining unit 145 configured to obtain information related to a connection state with a first client performing the process of the second layer, and a communication processing unit 147 configured to transmit, to a second client, the information related to the connection state with the first client.

公开(公告)号：US20170223574A1

公开(公告)日：2017-08-03

申请号：US15501254

申请日：2015-07-15

Applicant: NEC Corporation

Inventor： Tomohiro WATANABE ,  Atsushi NAKATA

IPC: H04W28/08 ,  H04W24/08

CPC classification number: H04W28/08 ,  H04W24/08 ,  H04W88/02 ,  H04W88/08 ,  H04W92/045 ,  H04W92/14

Abstract: Provided is a method of operating, when a load of a base station is changed, based on a load of a backhaul of another base station. An aspect of the present invention includes, in a communication system including a first backhaul (4) between a base station (100) and a core network (3) connected to the base station (100) and a second backhaul (5) between an adjacent base station (101) and the core network (3) connected to the adjacent base station (101), a calculation unit (10) configured to calculate a load of the second backhaul (5) when a load of the base station (100) is changed; and a determination unit (20) configured to determine as to whether or not the load of the base station (100) is changed based on a result of the calculation by the calculation unit (10).

公开(公告)号：US20170134996A1

公开(公告)日：2017-05-11

申请号：US15318827

申请日：2015-06-22

Applicant: NEC Corporation

Inventor： Meng WANG ,  Yoshio UEDA ,  Atsushi NAKATA

IPC: H04W36/00 ,  H04L29/06 ,  H04W12/04 ,  H04W36/38

CPC classification number: H04W36/0038 ,  H04L63/0428 ,  H04W12/04 ,  H04W36/0072 ,  H04W36/38 ,  H04W84/045 ,  H04W88/16

Abstract: A communication system is disclosed comprising a gateway connecting a source base station and a target base station. The gateway receives a message from the source base station initiating a handover of a mobile device from the source to the target base station. The received message comprises a security context (an NCC-KeNB pair and/or a KeNB*) for securing communications with the mobile device, and for deriving a further key for securing subsequent communications with the mobile device. The gateway generates and sends, to the target base station, a message requesting the target base station to carry out a handover, the message comprising the security context.

公开(公告)号：US20160262072A1

公开(公告)日：2016-09-08

申请号：US15031480

申请日：2014-10-21

Applicant: NEC Corporation

Inventor： Tomohiro WATANABE ,  Yasuhiko MATSUNAGA ,  Atsushi NAKATA

IPC: H04W36/22 ,  H04L12/803 ,  H04W28/02

CPC classification number: H04W36/22 ,  H04L47/125 ,  H04W28/02 ,  H04W28/0236

Abstract: [Problem] To provide a wireless base station, a traffic load-balancing method, and a traffic load-balancing program that make it possible to more reliably avoid backhaul congestion and decreases in wireless-terminal throughput. [Solution] This wireless base station includes the following: a setting unit (14) that sets network load information that indicates the traffic load on a backhaul between the wireless base station and a core network; and an execution unit (15) that, on the basis of the network load information set by the setting unit and network load information received from a neighboring wireless base station, executes a process that balances the traffic load between the wireless base stations.

Abstract translation: [问题]提供一种无线基站，流量负载平衡方法和业务负载均衡程序，使得可以更可靠地避免回程拥塞和无线终端吞吐量的降低。 [解决方案]该无线基站包括：设置单元（14），其设置指示无线基站和核心网之间的回程上的业务负载的网络负载信息; 以及执行单元，其基于由所述设置单元设置的网络负载信息和从相邻无线基站接收的网络负载信息，执行平衡所述无线基站之间的业务负载的处理。