公开(公告)号：US20100020754A1

公开(公告)日：2010-01-28

申请号：US12442092

申请日：2007-09-19

申请人： Hironobu Tanigawa ,  Yasuhiro Nakamura ,  Nobuaki Takamatsu

发明人： Hironobu Tanigawa ,  Yasuhiro Nakamura ,  Nobuaki Takamatsu

IPC分类号： H04W72/04

CPC分类号： H04L5/1484 ,  H04L5/0007 ,  H04L5/0048

摘要： There is provided an OFDMA communication system capable of suppressing the communication resource reduction and reducing the processing load on a base station. The system includes a downlink frame generation unit (14) that generates a downlink frame for a downlink period for performing communication to at least one terminal (20) of a plurality of terminals from the base station (10), and an uplink frame generation unit (24) that generates an uplink frame for an uplink period for performing communication to the base station (10) from at least one terminal (20) of the plurality of terminals. The downlink frame and the uplink frame have symmetric configurations.

摘要翻译： 提供了能够抑制通信资源减少并降低基站处理负荷的OFDMA通信系统。 该系统包括下行链路帧生成单元（14），其生成下行链路周期的下行链路帧，用于从基站（10）向多个终端中的至少一个终端（20）进行通信，上行链路帧生成单元 （24），其从所述多个终端的至少一个终端（20）生成用于进行与所述基站（10）的通信的上行链路周期的上行链路帧。 下行链路帧和上行链路帧具有对称配置。

公开(公告)号：US08493930B2

公开(公告)日：2013-07-23

申请号：US12447425

申请日：2007-10-25

申请人： Hironobu Tanigawa ,  Yasuhiro Nakamura ,  Nobuaki Takamatsu

发明人： Hironobu Tanigawa ,  Yasuhiro Nakamura ,  Nobuaki Takamatsu

IPC分类号： H04W36/00

CPC分类号： H04L5/0053 ,  H04W36/0083

摘要： There are provided an OFDMA communication system capable of reducing a time necessary for a handover without releasing a wireless communication with a base station as a handover source to search base stations, a base station and a mobile station used in the communication system, and a base station switching method.In an OFDMA communication system in which data communication is performed between a plurality of base stations 10 and a plurality of mobile stations, each base station 10 includes subchannel assignment setting unit 15-1 which sets assignment of subchannels including a first subchannel and a second subchannel for each of the mobile stations, the first subchannel including information indicating usable or unusable subchannels of the respective mobile stations and being assigned to the respective mobile stations, the second subchannel including actually-used data. When a request for switching the first subchannel is received from one of the mobile stations 20, the second subchannel is collected and assigned to a same slot as the first subchannel assigned to the one of the mobile stations 20.

摘要翻译： 提供了OFDMA通信系统，其能够减少切换所需的时间，而不会释放与作为切换源的基站的无线通信，以搜索在通信系统中使用的基站，基站和移动站，以及基站 站切换方式。 在多个基站10和多个移动台之间进行数据通信的OFDMA通信系统中，各基站10包括子信道分配设定部15-1，其设定包含第1子信道和第2子信道的子信道的分配 对于每个移动站，第一子信道包括指示各个移动站的可用或不可用的子信道并被分配给各个移动站的信息，第二子信道包括实际使用的数据。 当从移动站20之一接收到切换第一子信道的请求时，收集第二子信道并将其分配给与分配给移动站20之一的第一子信道相同的时隙。

公开(公告)号：US08228857B2

公开(公告)日：2012-07-24

申请号：US12442654

申请日：2007-09-14

申请人： Hironobu Tanigawa ,  Yasuhiro Nakamura ,  Nobuaki Takamatsu

发明人： Hironobu Tanigawa ,  Yasuhiro Nakamura ,  Nobuaki Takamatsu

IPC分类号： H04W4/00

CPC分类号： H04W72/0406 ,  H04L5/0007 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/006 ,  H04L5/0094 ,  H04W16/02 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/12

摘要： Provided is a wireless communication system for performing communication using a shared control channel that can be used in a predetermined period for each of a plurality of base stations and a plurality of traffic channels that can be adaptively allocated to each of a plurality of wireless communication terminals. The wireless communication terminal is provided with a channel requesting unit that requests the base station to allocate an individual control channel through the shared control channel and a communication control unit that performs control information communication by wirelessly connecting the individual control channel allocated from the base station. The base station is provided with a channel allocating unit that allocates one of the traffic channels as the individual control channel to be exclusively used for the wireless communication terminal when the request of individual control channel allocation is received from the wireless communication terminal through the shared control channel.

摘要翻译： 提供了一种无线通信系统，用于使用可以在多个基站中的每一个的预定时段中使用的共享控制信道和可以自适应地分配给多个无线通信终端中的每一个的多个业务信道来执行通信 。 无线通信终端设置有信道请求单元，其请求基站通过共享控制信道分配单独的控制信道;以及通信控制单元，其通过无线连接从基站分配的各个控制信道来执行控制信息通信。 基站具有信道分配单元，当通过共享控制从无线通信终端接收到各个控制信道分配的请求时，分配业务信道中的一个作为专用于无线通信终端的单独控制信道 渠道。

公开(公告)号：US20110051599A1

公开(公告)日：2011-03-03

申请号：US12439816

申请日：2007-09-04

申请人： Hironobu Tanigawa ,  Yasuhiro Nakamura ,  Toru Sahara ,  Nobuaki Takamatsu

发明人： Hironobu Tanigawa ,  Yasuhiro Nakamura ,  Toru Sahara ,  Nobuaki Takamatsu

IPC分类号： G06F11/07

CPC分类号： H04L1/1893 ,  H04L1/0002 ,  H04L1/04 ,  H04L1/1812 ,  H04L5/0007 ,  H04L5/003 ,  H04L27/2626

摘要： A wireless communication system which performs packet communication in a time division multiplexing communication format between wireless communication devices using either one or a plurality of communication channels includes: a resend request unit which detects that a received packet contains an error and requests a resend; a resend request detection unit which detects the request for a resend; a packet resend unit which resends the packet in accordance with the request for a resend detected by the resend request detection unit; and a channel allocation unit which allocates a different communication channel for the packet resend unit to resend the packet from the communication channel which was used for sending the packet in which the error detected by the resend request unit was contained.

摘要翻译： 一种使用一个或多个通信信道在无线通信设备之间以时分复用通信格式进行分组通信的无线通信系统包括：重发请求单元，其检测接收到的分组包含错误并请求重发; 重发请求检测单元，其检测重发的请求; 分组重发单元，其根据由所述重发请求检测单元检测到的重发的请求重新发送所述分组; 以及信道分配单元，其分配用于分组重发单元的不同通信信道，以从用于发送其中包含由重发请求单元检测到的错误的分组的通信信道重新发送分组。

公开(公告)号：US20100128684A1

公开(公告)日：2010-05-27

申请号：US12440432

申请日：2007-08-29

申请人： Hironobu Tanigawa ,  Yasuhiro Nakamura ,  Toru Sahara ,  Nobuaki Takamatsu

发明人： Hironobu Tanigawa ,  Yasuhiro Nakamura ,  Toru Sahara ,  Nobuaki Takamatsu

IPC分类号： H04W72/04

CPC分类号： H04L1/1812 ,  H04L1/1893 ,  H04W72/0453 ,  H04W88/08

摘要： A base station apparatus which conducts a packet communication with a wireless communication terminal includes: a retransmission request detection unit which detects a retransmission request from the wireless communication terminal; a bandwidth assignment unit which assigns a communication bandwidth applied to the packet communication; a modulation class calculation portion, based on both bandwidth information regarding the bandwidth assigned by the bandwidth assignment unit and a data amount of packets corresponding to the retransmission request, calculates a modulation class applied to a retransmission in order to adjust a number of retransmitted packets to be the same as a number of previously transmitted packets; a modulation class determination unit which determines whether or not the modulation class is lower than a modulation class applied to a previous packet transmission; and a retransmission unit which retransmits packets corresponding to the retransmission request based on the determination result regarding the modulation class.

摘要翻译： 与无线通信终端进行分组通信的基站装置包括：重发请求检测单元，其从无线通信终端检测重发请求; 带宽分配单元，其分配应用于分组通信的通信带宽; 调制类计算部分，基于与带宽分配单元分配的带宽的带宽信息和与重传请求对应的分组的数据量，计算应用于重传的调制类，以便将重传分组的数量调整为 与以前传输的数据数量相同; 调制类别确定单元，确定调制类别是否低于应用于先前分组传输的调制类别; 以及重传单元，其基于关于调制类别的判定结果，重发与所述重发请求对应的分组。

公开(公告)号：US20100111037A1

公开(公告)日：2010-05-06

申请号：US12447425

申请日：2007-10-25

申请人： Hironobu Tanigawa ,  Yasuhiro Nakamuru ,  Nobuaki Takamatsu

发明人： Hironobu Tanigawa ,  Yasuhiro Nakamuru ,  Nobuaki Takamatsu

IPC分类号： H04W36/00 ,  H04L27/28

CPC分类号： H04L5/0053 ,  H04W36/0083

摘要： There are provided an OFDMA communication system capable of reducing a time necessary for a handover without releasing a wireless communication with a base station as a handover source to search base stations, a base station and a mobile station used in the communication system, and a base station switching method.In an OFDMA communication system in which data communication is performed between a plurality of base stations 10 and a plurality of mobile stations, each base station 10 includes subchannel assignment setting unit 15-1 which sets assignment of subchannels including a first subchannel and a second subchannel for each of the mobile stations, the first subchannel including information indicating usable or unusable subchannels of the respective mobile stations and being assigned to the respective mobile stations, the second subchannel including actually-used data. When a request for switching the first subchannel is received from one of the mobile stations 20, the second subchannel is collected and assigned to a same slot as the first subchannel assigned to the one of the mobile stations 20.

摘要翻译： 提供了OFDMA通信系统，其能够减少切换所需的时间，而不会释放与作为切换源的基站的无线通信，以搜索在通信系统中使用的基站，基站和移动站，以及基站 站切换方式。 在多个基站10和多个移动台之间进行数据通信的OFDMA通信系统中，各基站10包括子信道分配设定部15-1，其设定包含第1子信道和第2子信道的子信道的分配 对于每个移动站，第一子信道包括指示各个移动站的可用或不可用的子信道并被分配给各个移动站的信息，第二子信道包括实际使用的数据。 当从移动站20之一接收到切换第一子信道的请求时，收集第二子信道并将其分配给与分配给移动站20之一的第一子信道相同的时隙。

公开(公告)号：US20100067458A1

公开(公告)日：2010-03-18

申请号：US12442291

申请日：2007-09-19

申请人： Hironobu Tanigawa ,  Yasuhiro Nakamura ,  Nobuaki Takamatsu

发明人： Hironobu Tanigawa ,  Yasuhiro Nakamura ,  Nobuaki Takamatsu

IPC分类号： H04W72/00

CPC分类号： H04L5/1484 ,  H04L5/0007 ,  H04L5/0048 ,  H04W72/04

摘要： There is provided an OFDMA communication system capable of suppressing the communication resource reduction and reducing the processing load on a base station. The system includes a downlink frame generation unit (14) that generates a downlink frame for a downlink period for performing communication to at least one terminal (20) of a plurality of terminals from the base station (10), an uplink frame generation unit (24) that generates an uplink frame for an uplink period for performing communication to the base station (10) from at least one terminal (20) of the plurality of terminals, and a channel allocation unit that allocates, for one terminal of the plurality of terminals, one or more subchannels available in the one terminal, wherein the channel allocation unit allocates, among the subchannels, subchannels having a same time slot and a same frequency band in the downlink frame and in the uplink frame for a single terminal of the plurality of terminals.

摘要翻译： 提供了能够抑制通信资源减少并降低基站处理负荷的OFDMA通信系统。 该系统包括下行链路帧生成单元（14），其生成用于从基站（10）向多个终端中的至少一个终端（20）进行通信的下行链路周期的下行链路帧，上行链路帧生成单元 24），其生成用于从所述多个终端中的至少一个终端（20）向所述基站（10）进行通信的上行链路周期的上行链路帧，以及信道分配单元，对于所述多个 终端，一个终端中可用的一个或多个子信道，其中信道分配单元在子信道中分配在下行链路帧中具有相同时隙和相同频带的子信道，并且在多个子载波中的单个终端的上行链路帧中 的终端。

公开(公告)号：US20100046446A1

公开(公告)日：2010-02-25

申请号：US12441374

申请日：2007-08-28

申请人： Hironobu Tanigawa ,  Yasuhiro Nakamura ,  Nobuaki Takamatsu

发明人： Hironobu Tanigawa ,  Yasuhiro Nakamura ,  Nobuaki Takamatsu

IPC分类号： H04W72/04

CPC分类号： H04W72/085 ,  H04W72/02 ,  H04W72/0406

摘要： Each mobile station device (12) includes: a subchannel allocation refusal determining section (50), which determines a subchannel refused to be allocated from a base station device (10), based on a communication quality measured for each subchannel by a communication quality measuring section (44); an RMAP creating section (52), which creates refused channel information (RMAP information) indicating the subchannel determined to be refused to be allocated; and a transmitting section (54) which gives notice of the created RMAP information to the base station device (10). The base station device (10) includes: an RMAP acquiring section (26), which acquires the RMAP information noticed from the each mobile station device (12); and a subchannel allocating section (32), which determines whether to change a subchannel to be allocated to the each mobile station device (12), based on the acquired RMAP information and allocated channel information (MAP information) indicating the subchannel allocated to the each mobile station device (12).

摘要翻译： 每个移动站装置（12）包括：子信道分配拒绝确定部（50），其基于通过通信质量测量对每个子信道测量的通信质量来确定拒绝从基站装置（10）分配的子信道 第（44）段; RMAP创建部分（52），其创建指示被拒绝被分配的子信道的拒绝信道信息（RMAP信息）; 以及向基站装置（10）通知所创建的RMAP信息的发送部分（54）。 基站装置（10）包括：RMAP获取部（26），其从各移动台装置（12）获取注意到的RMAP信息; 以及子信道分配部（32），其基于所获取的RMAP信息和分配的指示分配给每个移动台装置（12）的子信道的子信道的分配信道信息（MAP信息），确定是否改变要分配给每个移动台装置（12）的子信道 移动站装置（12）。

公开(公告)号：US20090305714A1

公开(公告)日：2009-12-10

申请号：US12442450

申请日：2007-09-14

申请人： Hironobu Tanigawa ,  Yasuhiro Nakamura ,  Nobuaki Takamatsu

发明人： Hironobu Tanigawa ,  Yasuhiro Nakamura ,  Nobuaki Takamatsu

IPC分类号： H04W72/00 ,  H04M1/00

CPC分类号： H04W72/0406 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0053 ,  H04W76/20

摘要： Provided is a wireless communication system in which a plurality of channels are shared and one of the channels is adaptively allocated to a wireless communication terminal by a base station. The wireless communication terminal is provided with a channel requesting unit that requests the base station to allocate an individual control channel when a communication request is received from an upper control unit of its own terminal or the base station, and a state control unit that controls the state of its own terminal so that the state transits to an individual control channel connected state in which control information is transmitted/received by wirelessly connecting the individual control channel allocated from the base station. The base station is provided with a channel allocating unit that allocates one of a plurality of traffic channels as the individual control channel to be exclusively used for the wireless communication terminal in response to the request from the wireless communication terminal.

摘要翻译： 提供了一种无线通信系统，其中共享多个信道，并且一个信道由基站自适应地分配给无线通信终端。 无线通信终端设置有信道请求单元，当从其本身的终端或基站的上位控制单元接收到通信请求时，请求基站分配单独的控制信道;以及状态控制单元， 使得状态转移到通过无线连接从基站分配的各个控制信道来发送/接收控制信息的单独的控制信道连接状态。 基站设置有信道分配单元，响应于来自无线通信终端的请求，分配多个业务信道中的一个作为专用于无线通信终端的单独控制信道。

公开(公告)号：US08675574B2

公开(公告)日：2014-03-18

申请号：US12442340

申请日：2007-09-19

申请人： Hironobu Tanigawa ,  Yasuhiro Nakamura ,  Nobuaki Takamatsu

发明人： Hironobu Tanigawa ,  Yasuhiro Nakamura ,  Nobuaki Takamatsu

IPC分类号： H04W4/00

CPC分类号： H04W72/042 ,  H04L5/0007 ,  H04L5/0094

摘要： There is provided an OFDMA communication system capable of suppressing the communication resource reduction and reducing the processing load on a base station. The system includes a downlink frame generation unit (14) that generates a downlink frame for a downlink period for performing communication to at least one terminal (20) of a plurality of terminals from the base station (10), an uplink frame generation unit (24) that generates an uplink frame for an uplink period for performing communication to the base station (10) from at least one terminal (20) of the plurality of terminals, and a channel allocation unit that allocates, for one terminal of the plurality of terminals, one or more subchannels available in the one terminal, wherein the channel allocation unit notifies information of the allocated one or more available subchannels to the one terminal only by the downlink frame.

摘要翻译： 提供了能够抑制通信资源减少并降低基站处理负荷的OFDMA通信系统。 该系统包括下行链路帧生成单元（14），其生成用于从基站（10）向多个终端中的至少一个终端（20）进行通信的下行链路周期的下行链路帧，上行链路帧生成单元 24），其生成用于从所述多个终端中的至少一个终端（20）向所述基站（10）进行通信的上行链路周期的上行链路帧，以及信道分配单元，对于所述多个 终端，一个终端中可用的一个或多个子信道，其中信道分配单元仅通过下行链路帧向一个终端通知所分配的一个或多个可用子信道的信息。