公开(公告)号：US20180242201A1

公开(公告)日：2018-08-23

申请号：US15517421

申请日：2015-07-15

Applicant: NEC Corporation

Inventor： Hiroaki AMINAKA

IPC: H04W36/00

CPC classification number: H04W36/0016 ,  H04W36/00 ,  H04W36/0027 ,  H04W36/0061 ,  H04W36/0066 ,  H04W36/0088 ,  H04W92/18

Abstract: A radio terminal (1) communicates with a controlling entity (9) through a first cell (32S) managed by a first radio access network entity (31S) located in a radio access network (RAN) (3) and also through a core network connected to the RAN (3) in order to establish ProSe communication with a second radio terminal (2), and then starts the ProSe communication (103) with the second radio terminal (2) in the first cell (32S). The radio terminal (1) transmits or receives, to or from the controlling entity (9), first control information about a handover of the first and second radio terminals (1, 2) from the first cell (32S) to a second cell (32T) managed by a second radio access network entity (31T) located in the RAN (3). This contributes to improvement in an inter-base station handover of a radio terminal that is performing inter-terminal direct communication.

公开(公告)号：US20180213385A1

公开(公告)日：2018-07-26

申请号：US15578396

申请日：2016-01-21

Applicant: NEC Corporation

Inventor： Hiroaki AMINAKA ,  Kazushi MURAOKA

IPC: H04W8/00 ,  H04W56/00

CPC classification number: H04W8/005 ,  H04W56/001 ,  H04W88/04 ,  H04W92/18

Abstract: A wireless terminal (1A) receives a discovery signal (201) wirelessly transmitted from another wireless terminal (1B) via device-to-device (D2D) communication, and transmits a discovery report (202, 302) to a network (2, 3) via cellular communication (101). The discovery report indicates at least one of: (a) an identifier of the other wireless terminal (1B); (b) an identifier(s) of one or more D2D communication pairs to which the other wireless terminal (1B) belongs; (c) an identifier of a base station or a cell with which the other wireless terminal (1B) is associated; (d) received power of a discovery signal from the other wireless terminal (1B); and (e) the number of detections of the discovery signal from the other wireless terminal (1B). It is thus possible to provide a discovery report containing contents suitable for use in a network.

公开(公告)号：US20180159616A1

公开(公告)日：2018-06-07

申请号：US15736165

申请日：2016-02-10

Applicant: NEC Corporation

Inventor： Hiroaki AMINAKA ,  Kazushi MURAOKA ,  Taichi OHTSUJI

IPC: H04B7/155 ,  H04W92/18 ,  H04W8/00 ,  H04W8/08 ,  H04W88/04

Abstract: A D2D communication control apparatus (10) according to the present invention includes: a communication unit (11) configured to receive determination information that can be used to determine whether each of a plurality of radio terminals is capable of performing device-to-device (D2D) communication with another radio terminal; and a selection unit (12) configured to select, using the determination information between radio terminals that may operate as relay radio terminals, a candidate for a relay radio terminal that relays the communication between one of the plurality of radio terminals and a network, the relay radio terminal candidate transmitting a response signal in response to a first discovery signal transmitted from one of the radio terminals by performing D2D communication with the one of the plurality of radio terminals and performing cellular communication with the network.

公开(公告)号：US20180084425A1

公开(公告)日：2018-03-22

申请号：US15562759

申请日：2015-11-30

Applicant: NEC CORPORATION

Inventor： Hiroaki AMINAKA

IPC: H04W12/08 ,  H04W72/04 ,  H04W8/00

CPC classification number: H04W12/08 ,  H04L63/104 ,  H04L67/16 ,  H04W4/08 ,  H04W8/005 ,  H04W40/20 ,  H04W72/04 ,  H04W72/048 ,  H04W76/14 ,  H04W84/18 ,  H04W92/18

Abstract: A radio terminal apparatus (113) is configured to perform D2D communication with at least one radio terminal (121-124) belonging to a second group (group 2) when a predetermined condition is satisfied. The predetermined condition includes that a first radio terminal (110) belonging to a first group (group 1) to which the radio terminal apparatus (113) belongs gives the second group (group 2) implicit or explicit permission to perform D2D communication between the first and second groups (groups 1 and 2). It is thus, for example, possible to contribute to improving security of device-to-device (D2D) communication performed between D2D communication groups.

公开(公告)号：US20170273076A1

公开(公告)日：2017-09-21

申请号：US15617120

申请日：2017-06-08

Applicant: NEC CORPORATION

Inventor： Hiroaki AMINAKA ,  Jinsock LEE

IPC: H04W72/04 ,  H04W74/08 ,  H04J13/10

CPC classification number: H04W72/0413 ,  H04J13/107 ,  H04W72/04 ,  H04W72/0406 ,  H04W74/0833

Abstract: It is possible to solve the problem that a downstream control information amount is significantly increased if allocation information is periodically reported because no allocation method of a default E-DCH resource configuration is defined for a preamble signature. A base station and a mobile station decide a default resource configuration by using a total number of resource configurations or a value obtained from the total number.

公开(公告)号：US20170230847A1

公开(公告)日：2017-08-10

申请号：US15514760

申请日：2015-07-15

Applicant: NEC Corporation

Inventor： Hiroaki AMINAKA

IPC: H04W24/04 ,  H04W72/00

Abstract: A control apparatus (5) is adapted to allocate a dedicated radio resource to a plurality of radio terminals (1, 2) for Proximity Service (ProSe) communication (103) performed within a terminal group including the plurality of radio terminals (1, 2), and allocate a shared radio resource to the plurality of radio terminal (1, 2) for ProSe communication performed between a radio terminal (1, 2) belonging to the terminal group and a radio terminal that does not belong to the terminal group. This contributes, for example, to facilitating inter-terminal direct communication.

公开(公告)号：US20170215084A1

公开(公告)日：2017-07-27

申请号：US15406012

申请日：2017-01-13

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI ,  Hiroto SUGAHARA ,  Hiroaki AMINAKA

IPC: H04W16/14 ,  H04W72/04 ,  H04W28/08 ,  H04W88/06 ,  H04W72/08 ,  H04W72/12 ,  H04W92/12

CPC classification number: H04W16/14 ,  H04W28/06 ,  H04W28/08 ,  H04W72/0453 ,  H04W72/085 ,  H04W72/087 ,  H04W72/1226 ,  H04W88/06 ,  H04W92/12

Abstract: In one embodiment, a controller (3) operates to control, based on at least one condition, utilization by a first radio station (1) of a shared frequency shared by a plurality of radio systems including a radio communication system (100). The at least one condition includes a first condition regarding communication capability on the shared frequency of at least one radio terminal (2) belonging to a cell (11) operated by the first radio station (1). This embodiment therefore contributes to efficient utilization of the shared frequency (e.g., TVWS) shared by the plurality of radio systems.

公开(公告)号：US20170079055A1

公开(公告)日：2017-03-16

申请号：US15358674

申请日：2016-11-22

Applicant: NEC Corporation

Inventor： Hiroaki AMINAKA ,  Kojiro HAMABE

IPC: H04W72/12

CPC classification number: H04W72/1205 ,  H04L5/003 ,  H04L69/324 ,  H04W4/06 ,  H04W72/04 ,  H04W72/12 ,  H04W88/08 ,  H04W88/085

Abstract: A radio station (1) includes a first part (1A) and at least one second part (1B). The second part (1B) can be arranged so as to be physically separated from the first part (1A) and is connected to the first part (1A) via a transmission line (40) so as to be able to communicate with the first part. The first part (1A) performs dynamic scheduling to allocate a plurality of radio resources to a plurality of mobile stations or user data. The second part (1B) performs signal processing including channel coding for transmitting downlink user data to an air interface and channel decoding for restoring uplink user data from a signal received from the air interface.

Abstract translation: 无线电台（1）包括第一部分（1A）和至少一个第二部分（1B）。 第二部分（1B）可以布置成与第一部分（1A）物理分离，并且经由传输线（40）连接到第一部分（1A），以便能够与第一部分 。 第一部分（1A）执行动态调度以将多个无线电资源分配给多个移动站或用户数据。 第二部分（1B）执行信号处理，包括用于向空中接口发送下行链路用户数据的信道编码和用于从从空中接口接收的信号中恢复上行链路用户数据的信道解码。

公开(公告)号：US20170041943A1

公开(公告)日：2017-02-09

申请号：US15331404

申请日：2016-10-21

Applicant: NEC Corporation

Inventor： Hiroaki AMINAKA ,  Kojiro HAMABE

IPC: H04W72/12

CPC classification number: H04W72/1263 ,  H04L1/18 ,  H04L1/1812 ,  H04L27/2628 ,  H04L69/22 ,  H04W72/12 ,  H04W72/1236 ,  H04W72/1252 ,  H04W72/1257 ,  H04W88/085

Abstract: A radio station (1) includes a first part (1A) and a second part (1B). The second part (1B) can be arranged so as to be physically separated from the first part (1A) and is connected to the first part (1A) via a transmission line (40) so as to be able to communicate with the first part. Each of the first part (1A) and the second part (1B) includes a digital signal processing unit (11A, 11B) and is capable of alternatively performing digital signal processing for user data. An analog signal processing unit (13) arranged in the second part performs analog signal processing including at least one of frequency conversion and power amplification to provide an air interface to a mobile station.

Abstract translation: 无线电台（1）包括第一部分（1A）和第二部分（1B）。 第二部分（1B）可以布置成与第一部分（1A）物理分离，并且经由传输线（40）连接到第一部分（1A），以便能够与第一部分 。 第一部分（1A）和第二部分（1B）中的每一个包括数字信号处理单元（11A，11B），并且能够交替地对用户数据执行数字信号处理。 布置在第二部分中的模拟信号处理单元（13）执行包括频率转换和功率放大中的至少一个的模拟信号处理，以向移动台提供空中接口。

公开(公告)号：US20150350962A1

公开(公告)日：2015-12-03

申请号：US14655936

申请日：2013-12-02

Applicant: NEC CORPORATION

Inventor： Hisashi FUTAKI ,  Hiroaki AMINAKA

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

Abstract: A radio network (6) and a radio terminal (4) are configured to, when the radio terminal (4) is using a first cell (10) served by a first radio station (1) as a primary cell and a second cell (20) served by a second radio station (2) as a secondary cell, change the secondary cell form the second cell (20) to a third cell (30) while keeping communication status information regarding the radio terminal (4) on the second cell (20). It is thus, for example, possible to enable a communication service in the secondary cell to be continued after the secondary cell is changed when the radio terminal which is simultaneously using a plurality of cells served by different radio stations changes the secondary cell from a cell of one radio station to a cell of another radio station.

Abstract translation: 无线电网络（6）和无线电终端（4）被配置为当无线电终端（4）正在使用由第一无线电台（1）服务的第一小区（10）作为主小区和第二小区（ 由第二无线电站（2）服务的辅助小区作为二级小区，将从第二小区（20）的二级小区改变为第三小区（30），同时保持与第二小区有关的无线终端（4）的通信状态信息 （20）。 因此，例如，当同时使用由不同无线电台服务的多个小区的无线终端从小区改变二次小区时，例如可以使二次小区中的通信服务继续在二次小区改变之后 一个无线电台到另一个无线电台的小区。