专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5862182A OFDM digital communications system using complementary codes 失效
标题翻译： OFDM数字通信系统采用互补码
公开(公告)号：US5862182A
公开(公告)日：1999-01-19
申请号：US688574
申请日：1996-07-30
申请人： Geert Arnout Awater , Adriaan Kamerman , Anjur Sundaresan Krishnakumar , Didier J. R. van Nee
发明人： Geert Arnout Awater , Adriaan Kamerman , Anjur Sundaresan Krishnakumar , Didier J. R. van Nee
IPC分类号： H04L27/36 , H04J11/00 , H04L27/26 , H04L27/38 , H04L27/10
CPC分类号： H04L23/02 , H04J13/10 , H04L27/2602 , H04L27/2617 , H04L27/2621
摘要： The encoding/transmission of information in an OFDM system is enhanced by using complementary codes. The complementary codes, more particularly, are converted into phase vectors and the resulting phase vectors are then used to modulate respective carrier signals. The modulated result is then transmitted to a receiver which decodes the received signals to recover the encoded information.
摘要翻译：通过使用互补码来增强OFDM系统中信息的编码/传输。互补码更具体地被转换为相位矢量，然后使用所得到的相位矢量来调制相应的载波信号。然后将调制结果发送到接收机，其对接收到的信号进行解码以恢复编码信息。

2. 发明授权

US07468960B2 Network system comprising access points 有权
标题翻译：包括接入点的网络系统
公开(公告)号：US07468960B2
公开(公告)日：2008-12-23
申请号：US10140689
申请日：2002-05-08
申请人： Geert Arnout Awater , Wilhelmus Diepstraten , Adriaan Kamerman
发明人： Geert Arnout Awater , Wilhelmus Diepstraten , Adriaan Kamerman
IPC分类号： H04Q7/00
CPC分类号： H04W16/10
摘要： In one embodiment, a network system has a plurality of access points, wherein each access point can be used for wireless communication with at least one station, wherein each access point can (1) receive a probe signal with either a first or second channel frequency and (2) generate and transmit, in response to the probe signal, a response signal with the first or second channel frequency. At least one access point selects at least one channel frequency for the wireless communication with the at least one station on the basis of at least one response signal received with the first channel frequency as transmitted by any of the other access points and/or at least one response signal received with the second channel frequency as transmitted by any of the other access points.
摘要翻译：在一个实施例中，网络系统具有多个接入点，其中每个接入点可用于与至少一个站的无线通信，其中每个接入点可以（1）接收具有第一或第二信道频率的探测信号和（2）响应于探测信号产生并发射具有第一或第二信道频率的响应信号。至少一个接入点基于至少一个响应信号，选择至少一个信道频率用于与至少一个站的无线通信，所述至少一个响应信号是以任何其他接入点所传送的第一信道频率和/或至少一个响应信号由第二信道频率接收，由任何其他接入点发送。

3. 发明授权

US07173918B2 Wireless LAN with load balancing 有权
标题翻译：无线局域网与负载均衡
公开(公告)号：US07173918B2
公开(公告)日：2007-02-06
申请号：US09859334
申请日：2001-05-17
申请人： Geert Arnout Awater , Adriaan Kamerman , Hendrik Moelard
发明人： Geert Arnout Awater , Adriaan Kamerman , Hendrik Moelard
IPC分类号： H04Q7/00
CPC分类号： H04W36/22 , H04W36/30 , H04W48/08 , H04W48/16
摘要： A communication system with a plurality of access points (AP1, AP2, AP3) and at least one network station (5, 6), the network station (5, 6) being arranged to communicate with one of the plurality of access points (AP1, AP2, AP3) through a wireless communication protocol, each access point (AP1, AP2, AP3) is able to monitor its access point traffic load and transmit an access point traffic load parameter (ATT) to the network station (5, 6), and the network station (5, 6) is able to monitor its network station traffic load; store a network station traffic load parameter (AUTT); receive access point traffic load parameters (ATT) from the access points (AP1, AP2, AP3); and select a communication connection with one of the access points (AP1, AP2, AP3) using a predetermined cost function taking the access point traffic load parameters (ATT) and the network station traffic load parameters (AUTT) into account.
摘要翻译：一种具有多个接入点（AP 1，AP 2，AP 3）和至少一个网络站（5,6））的通信系统，所述网络站（5,6）被布置为与所述多个接入点（AP 1，AP 2，AP 3）通过无线通信协议，每个接入点（AP 1，AP 2，AP 3）能够监视其接入点业务负载并发送接入点业务负载参数（ATT）（5,6），网络站（5,6）能够监视其网络站的业务负载; 存储网络站流量负载参数（AUTT）; 从接入点（AP 1，AP 2，AP 3）接收接入点业务负载参数（ATT）; 并且使用考虑了接入点业务负载参数（ATT）和网络站业务负载参数（AUTT）的预定成本函数来选择与接入点（AP 1，AP 2，AP 3）之一的通信连接。

4. 发明授权

US07996236B2 Wireless LAN with load balancing 有权
标题翻译：无线局域网与负载均衡
公开(公告)号：US07996236B2
公开(公告)日：2011-08-09
申请号：US11650011
申请日：2007-01-05
申请人： Geert Arnout Awater , Adriaan Kamerman , Hendrik Moelard
发明人： Geert Arnout Awater , Adriaan Kamerman , Hendrik Moelard
IPC分类号： G06Q10/00
CPC分类号： H04W36/22 , H04W36/30 , H04W48/08 , H04W48/16
摘要： A communication system with a plurality of access points (AP1, AP2, AP3) and at least one network station (5, 6), the network station (5, 6) being arranged to communicate with one of said the plurality of access points (AP1, AP2, AP3) through a wireless communication protocol, each access point (AP1, AP2, AP3) is able to monitor its access point traffic load and transmit an access point traffic load parameter (ATT) to the network station (5, 6), and the network station (5, 6) is able to monitor its network station traffic load; store a network station traffic load parameter (AUTT); receive access point traffic load parameters (ATT) from the access points (AP1, AP2, AP3); and select a communication connection with one of the access points (AP1, AP2, AP3) using a predetermined cost function taking the access point traffic load parameters (ATT) and the network station traffic load parameters (AUTT) into account.
摘要翻译：一种具有多个接入点（AP1，AP2，AP3）和至少一个网络站（5,6）的通信系统，所述网络站（5,6）被布置为与所述多个接入点中的一个通信 AP1，AP2，AP3）通过无线通信协议，每个接入点（AP1，AP2，AP3）能够监视其接入点业务负载，并将接入点业务负载参数（ATT）发送到网络站），并且网络站（5,6）能够监视其网络站的业务负载; 存储网络站流量负载参数（AUTT）; 从接入点（AP1，AP2，AP3）接收接入点业务负载参数（ATT）; 并且考虑到接入点业务负载参数（ATT）和网络站业务负载参数（AUTT），使用预定的成本函数来选择与接入点（AP1，AP2，AP3）之一的通信连接。

5. 发明授权

US5706428A Multirate wireless data communication system 失效
标题翻译：多速率无线数据通信系统
公开(公告)号：US5706428A
公开(公告)日：1998-01-06
申请号：US615408
申请日：1996-03-14
申请人： Jan Boer , Wilhelmus Josephus Diepstraten , Adriaan Kamerman , Hendrik van Bokhorst , Hans van Driest
发明人： Jan Boer , Wilhelmus Josephus Diepstraten , Adriaan Kamerman , Hendrik van Bokhorst , Hans van Driest
IPC分类号： H04B1/707 , H04L12/28 , H04L12/56 , H04Q1/30
CPC分类号： H04B1/707 , H04B2201/70703 , H04W28/22 , H04W4/12 , H04W84/12
摘要： A wireless LAN includes first stations adapted to operate at a 1 or a 2 Mbps data rate and second stations adapted to operate at a 1,2,5 or 8 Mbps data rate. The 1 and 2 Mbps rates use DBPSK and DQPSK modulation, respectively. The 5 and 8 Mbps rates use PPM/DQPSK modulation. All four data rates use direct sequence spread spectrum (DSSS) coding. All transmitted messages start with a preamble and header at the 1 Mbps rate. The header includes fields identifying the data rate for the data portion of the message, and a length field. For a 2 Mbps transmission the length field identifies the number of bytes in the data field. For a 5 or 8 Mbps the length field identifies the number of bytes in the data field which, if transmitted at 2 Mbps, would take the same transmission time of the data field, and is thus a fraction 2/5 or 2/8 of the actual number of the bytes. With this arrangements, all the stations are interoperable in a co-existent manner in the LAN.
摘要翻译：无线LAN包括适于以1或2Mbps数据速率操作的第一站和适于以1,2,5或8Mbps数据速率操作的第二站。 1和2Mbps速率分别使用DBPSK和DQPSK调制。 5和8 Mbps速率使用PPM / DQPSK调制。所有四种数据速率都使用直接序列扩频（DSSS）编码。所有发送的消息以1 Mbps速率从前同步码和报头开始。标题包括标识消息的数据部分的数据速率的字段和长度字段。对于2Mbps传输，长度字段标识数据字段中的字节数。对于5或8 Mbps，长度字段标识数据字段中的字节数，如果以2 Mbps发送，则将占用数据字段的相同传输时间，因此为小数+ E，fra 2/5 + EE或+ E，fra 2/8 + EE的实际字节数。通过这种安排，所有的台站可以在局域网中以共存的方式进行互操作。

6. 发明授权

US5636247A Information transmission system 失效
标题翻译：信息传输系统
公开(公告)号：US5636247A
公开(公告)日：1997-06-03
申请号：US407829
申请日：1995-03-21
申请人： Adriaan Kamerman , Anjur S. Krishnakumar
发明人： Adriaan Kamerman , Anjur S. Krishnakumar
IPC分类号： H04J11/00 , H04L27/20 , H04L27/26 , H04K1/10
CPC分类号： H04L27/2602 , H04L27/2614
摘要： A system for transmitting information over an OFDM channel using phase shift keying encoding employs a bit mapping encoder to reduce the crest factor (ratio of peak voltage to RMS voltage). For a 16 subchannel OFDM system using QPSK encoding, a first set of four symmetrically positioned pairs of subchannels is used to encode two bits of information on each subchannel. A second set of four symmetrically positioned pairs of subchannels is used to encode only one bit of information on each subchannel, with the resultant phasor for each pair of the second set of pairs of subchannels being orthogonal to the resultant phasor for one of the pairs of the first set of subchannels. With this arrangement, the crest factor is reduced.
摘要翻译：通过使用相移键控编码在OFDM信道上传输信息的系统使用比特映射编码器来降低峰值因数（峰值电压与RMS电压的比率）。对于使用QPSK编码的16子信道OFDM系统，使用第一组四个对称定位的子信道对来对每个子信道上的两比特信息进行编码。第二组四个对称定位的子信道对被用于仅对每个子信道上的一个比特的信息进行编码，其中每对第二组子信道对的所得相量与所得到的相位对中的一个对第一组子通道。通过这种布置，波峰因数降低。

7. 发明申请

US20120269083A1 COMMUNICATION DEVICE 有权
标题翻译：通信设备
公开(公告)号：US20120269083A1
公开(公告)日：2012-10-25
申请号：US13510274
申请日：2009-11-20
申请人： Adriaan Kamerman
发明人： Adriaan Kamerman
IPC分类号： H04W24/00
CPC分类号： H04B7/0811 , H03F2200/294 , H04B1/109
摘要： The invention relates to a communication device (2) comprising an antenna system (4) provided with at least one antenna (6a, 6b, 6c) for receiving a radio signal and supplying a received radio signal to an output (8) of the antenna system, a low noise amplifier (10) for amplification of the received radio signal to obtain an amplified radio signal, and a processing unit (12) for processing the amplified radio signal. The antenna system (4) is configured to supply in a first state a first antenna signal as the received radio signal and in a second state second antenna signal as the received radio signal, wherein the first antenna signal and second antenna signal differ in amplitude. The antenna system is further configured to switch from state in response to a control signal (14) generated by the processing unit (12).
摘要翻译：本发明涉及一种包括天线系统（4）的通信设备（2），所述天线系统（4）设置有至少一个天线（6a，6b，6c），用于接收无线电信号，并将接收到的无线电信号提供给天线的输出（8）系统，用于放大接收到的无线电信号以获得放大的无线电信号的低噪声放大器（10），以及用于处理放大的无线电信号的处理单元（12）。天线系统（4）被配置为以第一状态提供作为所接收的无线电信号的第一天线信号，并且以第二状态提供第二天线信号作为所接收的无线电信号，其中第一天线信号和第二天线信号幅度不同。天线系统还被配置为响应于由处理单元（12）产生的控制信号（14）从状态切换。

8. 发明授权

US07463589B2 Wireless LAN with enhanced carrier sensing 有权
标题翻译：无线局域网具有增强的载波侦听功能
公开(公告)号：US07463589B2
公开(公告)日：2008-12-09
申请号：US09919051
申请日：2001-07-31
申请人： Wilhelmus Diepstraten , Adriaan Kamerman , Kai Roland Kriedte , D. J. Richard Van Nee
发明人： Wilhelmus Diepstraten , Adriaan Kamerman , Kai Roland Kriedte , D. J. Richard Van Nee
IPC分类号： H04J1/16 , H04J3/14 , H04J1/00 , H04L12/26
CPC分类号： H04W74/0808 , H04L27/2602 , H04W84/12 , H04W88/06
摘要： Medium access control device (301) for a mobile network station (3, 4, 5) or an access point (AP1) in a wireless local area network (1), having controlling means (302), processing means (303) and transmitting and receiving means (304); the controlling means (302) being arranged to control transmission and reception of radio frequency data signals containing data symbols; the transmitting and receiving means (304) being arranged for transmission and reception of electromagnetic data signals; the processing means (303) being arranged for detecting a first signal portion and a second signal portion in the received data signal, the second signal portion following the first signal portion and having a signal coding differing from a signal coding of the first signal portion.
摘要翻译：一种用于无线局域网（1）中的移动网络站（3,4,5）或接入点（AP1）的媒体接入控制设备（301），具有控制装置（302），处理装置（303）和传输和接收装置（304）。控制装置（302）被布置成控制包含数据符号的射频数据信号的发送和接收; 发送和接收装置（304）被布置用于发送和接收电磁数据信号; 处理装置（303）被布置用于检测接收数据信号中的第一信号部分和第二信号部分，第二信号部分跟随第一信号部分并且具有与第一信号部分的信号编码不同的信号编码。

9. 发明申请

US20050276241A1 Wireless LAN with fragmentation for bluetooth coexistence 审中-公开
标题翻译：无线局域网与蓝牙共存的碎片
公开(公告)号：US20050276241A1
公开(公告)日：2005-12-15
申请号：US10893987
申请日：2004-07-20
申请人： Adriaan Kamerman , Ernestus van der Horst , Roland Hellfajer , Christian Durdodt
发明人： Adriaan Kamerman , Ernestus van der Horst , Roland Hellfajer , Christian Durdodt
IPC分类号： H04L12/28 , H04L12/56 , H04W16/14 , H04W28/06 , H04W74/04 , H04W84/12 , H04W84/18 , H04Q7/00
CPC分类号： H04W28/06 , H04W16/14 , H04W74/04 , H04W84/12 , H04W84/18
摘要： Mutual interference experienced between co-located WLAN and BT devices is minimized. An improved wireless local area network (WLAN) scheme using fragmentation, that itself mitigates BLUETOOTH™—related interference, without relying on a presumed cooperation from co-located BLUETOOTH devices. The use of fragmentation in a WLAN network allows a longer concatenated period of WLAN activity, with corrupted segments being retried. Therefore, the chances of getting a full frame transferred during the repetitive interference by BT voice is greatly improved. A coexistence scheme is provided that is active in the MAC layer of a Wireless LAN (WLAN) device, aiming to make optimal use of the non-occupied BT slots for both uplink and downlink WLAN communication. The co-existence scheme improves throughput performance for active co-located WLAN and BT devices. Because the coexistence scheme is link-based instead of global and is enabled only when required, frame loss and fragmentation are minimized, leading to less network overhead.
摘要翻译：在同一个WLAN和BT设备之间经历的互相干扰最小化。使用分段的改进的无线局域网（WLAN）方案，其本身减轻了与蓝牙（Bluetooth）相关的干扰，而不依赖于来自共同定位的蓝牙设备的推定的合作。在WLAN网络中使用碎片允许WLAN活动的更长连接周期，重新尝试损坏的段。因此，在BT语音的重复干扰期间获得全帧传输的机会大大提高。提供了一种在无线LAN（WLAN）设备的MAC层中有效的共存方案，旨在最佳地利用上行和下行WLAN通信中的非占用BT时隙。共存方案提高了主动共同配置的WLAN和BT设备的吞吐量性能。因为共存方案是基于链路而不是全局的，并且仅在需要时被启用，所以帧丢失和分片被最小化，导致更少的网络开销。

10. 发明授权

US5987033A Wireless lan with enhanced capture provision 失效
标题翻译：无线网络具有增强的捕获条件
公开(公告)号：US5987033A
公开(公告)日：1999-11-16
申请号：US925416
申请日：1997-09-08
申请人： Jan Boer , Hendrik van Bokhorst , Wilhelmus Josephus Diepstraten , Adriaan Kamerman , Rienk Mud , Hans van Driest , Robert John Kopmeiners
发明人： Jan Boer , Hendrik van Bokhorst , Wilhelmus Josephus Diepstraten , Adriaan Kamerman , Rienk Mud , Hans van Driest , Robert John Kopmeiners
IPC分类号： H04L12/28 , H04B7/00 , H04L12/413 , H04Q7/00
CPC分类号： H04W74/0816 , Y02B60/50
摘要： A receiver, and a method for operating the receiver, for a station in a wireless local area network using a common wireless communication channel and employing a CSMA/CA (carrier sense multiple access with collision avoidance) protocol includes various modes. In normal mode, the receiver follows typical states in order to detect a message and demodulate data from the message properly. Meanwhile, a process implements a message-in-message (MIM) mode when an energy increase above a specified level is detected. While in the MIM mode, if a carrier is detected, the energy increase is caused by a new message; otherwise, the energy increase is caused by an interfering station. If the carrier is detected, the receiver begins retraining so that it can start receiving the new message as soon as the first message ends. If no carrier is detected, the receiver waits a specified time to detect a carrier or for the end of the first message, after which the receiver returns to the beginning of the normal mode. While in the normal mode, if a message is detected that is not addressed to the station, the receiver enters a hunt mode. While in the hunt mode, the receiver waits for the current message to finish. At the same time, a process implements retraining when both an energy increase above a specified level and a carrier are detected. If no carrier is detected within a specified time, or if the energy level decreases below the specified level, the receiver returns to the beginning of the normal mode.
摘要翻译：使用公共无线通信信道和采用CSMA / CA（具有冲突避免的载波侦听多路访问）协议的无线局域网中的站的接收机和操作接收机的方法包括各种模式。在正常模式下，接收机遵循典型状态，以便检测消息并正确地解调消息中的数据。同时，当检测到高于指定电平的能量增加时，处理实现消息消息（MIM）模式。在MIM模式下，如果检测到载波，则能量增加是由新信息引起的; 否则，能量增加是由干扰站造成的。如果检测到载波，则接收机开始重新训练，以便在第一个消息结束时，它可以开始接收新消息。如果没有检测到载波，则接收机等待指定的时间来检测载波或第一个消息的结束，接收机返回到正常模式的开始。在正常模式下，如果检测到没有寻址到站的消息，则接收机进入寻线模式。在寻线模式下，接收机等待当前消息完成。同时，当检测到高于指定水平的能量增加和载波时，过程实施再训练。如果在指定时间内没有检测到载波，或者能量水平降低到指定的电平以下，则接收机返回正常模式的开始。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式