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1. 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。

2. 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。

3. 发明授权

US5128960A Clock recovery for a wireless local area network station 失效
标题翻译：无线本地区网络站的时钟恢复
公开(公告)号：US5128960A
公开(公告)日：1992-07-07
申请号：US633697
申请日：1990-12-24
申请人： Hans van Driest , Jan Boer
发明人： Hans van Driest , Jan Boer
IPC分类号： H04B1/707
CPC分类号： H04B1/707 , H04B1/709
摘要： A local area network station for receiving data symbols encoded in a spread spectrum code and transmitted over a wireless channel includes in-phase and quadrature correlators (42, 44) the output signals of which are used to address a look-up table (50) for conversion to amplitude and phase sample signals. Corresponding amplitude sample signals are integrated and stored in a plurality of registers (96) and for each symbol, the register (96) storing the maximum value is ascertained to identify the associated sample number, which is stored in a sample number register (160). This sample number is utilized to determine the time of a symbol clock signal (RXCLK) used for clocking the received data.

4. 发明授权

US08503577B2 Signal quality estimation in a wireless communication system 有权
标题翻译：无线通信系统中的信号质量估计
公开(公告)号：US08503577B2
公开(公告)日：2013-08-06
申请号：US10621862
申请日：2003-07-17
申请人： Jan Boer , Bas Driesen , Ra'anan Gil , Kai Roland Kriedte
发明人： Jan Boer , Bas Driesen , Ra'anan Gil , Kai Roland Kriedte
IPC分类号： H04L27/06
CPC分类号： H04L1/208 , H04L1/20
摘要： In a wireless system including a wireless communication channel, a method for estimating a signal quality of a received signal includes the steps of receiving a signal from the wireless communication channel, the received signal including at least one field that is modulated and encoded in a substantially fixed manner, and generating at least one reference field based, at least in part, on the at least one field and on a channel estimation signal. The channel estimation signal is representative of at least one characteristic of the wireless communication channel. The method further includes the step of generating a signal quality estimate as a function of the at least one field in the received signal and the generated at least one reference field.
摘要翻译：在包括无线通信信道的无线系统中，用于估计接收信号的信号质量的方法包括以下步骤：从无线通信信道接收信号，所接收的信号包括被实质上被调制和编码的至少一个场至少部分地基于所述至少一个场和信道估计信号生成至少一个参考场。信道估计信号表示无线通信信道的至少一个特性。该方法还包括以下步骤：根据所接收的信号和所生成的至少一个参考场产生作为至少一个场的函数的信号质量估计。

5. 发明申请

US20060253765A1 Acknowledgement message modification in communication networks 有权
公开(公告)号：US20060253765A1
公开(公告)日：2006-11-09
申请号：US11121191
申请日：2005-05-03
申请人： Jan Boer , Wilhelmus Diepstraten , Joachim Hammerschmidt , Syed Mujtaba
发明人： Jan Boer , Wilhelmus Diepstraten , Joachim Hammerschmidt , Syed Mujtaba
IPC分类号： H04L1/18
CPC分类号： H04L1/1829
摘要： A method for processing a received encoded data unit comprises: decoding the received encoded data unit; determining whether the encoded data unit has been correctly received; prior to completing the determination of whether the encoded data unit has been correctly received, initiating the transmission of an acknowledgment message; and modifying the transmission of the acknowledgment message if it is determined that the data unit has not been correctly received. In another embodiment, a station for a communications network comprises: a decoder adapted to decode a received encoded data unit; a check processor adapted to determine whether the encoded data unit has been correctly received; and a transmitter adapted to initiate the transmission of an acknowledgment message prior to the check processor completing the determination whether the encoded data unit has been correctly received. The transmitter is adapted to modify the transmission of the acknowledgment message if the check processor determines that the data unit has not been correctly received.

6. 发明申请

US20070060073A1 Method and apparatus for communicating symbols in a multiple input multiple output communication system using interleaved subcarriers across a plurality of antennas 有权
标题翻译：在多输入多输出通信系统中使用穿过多个天线的交错子载波传送符号的方法和装置
公开(公告)号：US20070060073A1
公开(公告)日：2007-03-15
申请号：US10562618
申请日：2004-06-30
申请人： Jan Boer , Bas Driesen , Tim Schenk , Allert Zelst
发明人： Jan Boer , Bas Driesen , Tim Schenk , Allert Zelst
IPC分类号： H04B1/02
CPC分类号： H04L25/0232 , H04B7/0413 , H04B7/0617 , H04L5/0023 , H04L5/0048 , H04L25/0204 , H04L25/0226 , H04W16/24 , H04W16/28
摘要： A method and apparatus are provided for transmitting one or more symbols in a multiple antenna wireless communication system. Subcarriers from one or more symbols are interleaved across a plurality of antennas. The symbols may be, for example, long or short training symbols based on a single-antenna long or short training symbol, respectively, and wherein each subsequent subcarrier from the single-antenna training symbol is positioned in a training symbol for a logically adjacent antenna. One or more additional subcarriers may be inserted in at least one of the plurality of symbols to allow nulled subcarriers to be estimated using an interpolation-based channel estimation technique. The remaining portions of a header, as well as the data sequences of a packet, may also be diagonally loaded.
摘要翻译：提供一种在多天线无线通信系统中发送一个或多个符号的方法和装置。来自一个或多个符号的子载波在多个天线之间交织。符号可以是例如分别基于单天线长或短训练符号的长或短训练符号，并且其中来自单天线训练符号的每个后续子载波被定位在用于逻辑相邻天线的训练符号中。可以在多个符号中的至少一个中插入一个或多个附加子载波，以允许使用基于插值的信道估计技术估计零位子载波。报头的剩余部分以及分组的数据序列也可以对角地加载。

7. 发明授权

US06967994B2 Method for operating a communication system and a communication system with training means 有权
标题翻译：用于操作具有训练装置的通信系统和通信系统的方法
公开(公告)号：US06967994B2
公开(公告)日：2005-11-22
申请号：US09948531
申请日：2001-09-07
申请人： Jan Boer , Henk Van Bokhorst , Robert John Kopmeiners , Kai Roland Kriedte , Rienk Mud
发明人： Jan Boer , Henk Van Bokhorst , Robert John Kopmeiners , Kai Roland Kriedte , Rienk Mud
IPC分类号： H04L1/00 , H04L27/22 , H04L5/16 , H04L27/06 , H04L27/14 , H04K9/00
CPC分类号： H04L1/0006
摘要： A system for operating a communication system comprising one or more transmitters and receivers. The transmitted signals are provided with a preamble for training the receiver and/or the transmitter being in communication. The quality of the received signal is measured and compared with a threshold. If the quality is higher or lower than said threshold, a short preamble processing or a long preamble processing, respectively, is used. More than one threshold and associated pairs of preambles having different length may be used.
摘要翻译：一种用于操作包括一个或多个发射器和接收器的通信系统的系统。发送的信号被提供有用于训练接收机和/或正在通信的发射机的前同步码。测量接收信号的质量并将其与阈值进行比较。如果质量高于或低于所述阈值，则分别使用短前导码处理或长前导码处理。可以使用具有不同长度的多于一个阈值和相关联的前导码对。

8. 发明申请

US20050013391A1 Signal quality estimation in a wireless communication system 有权
标题翻译：无线通信系统中的信号质量估计
公开(公告)号：US20050013391A1
公开(公告)日：2005-01-20
申请号：US10621862
申请日：2003-07-17
申请人： Jan Boer , Bas Driesen , Ra'anan Gil , Kai Kriedte
发明人： Jan Boer , Bas Driesen , Ra'anan Gil , Kai Kriedte
IPC分类号： H04J11/00 , H04B17/00 , H04L1/20 , H04L27/06
CPC分类号： H04L1/208 , H04L1/20
摘要： In a wireless system including a wireless communication channel, a method for estimating a signal quality of a received signal includes the steps of receiving a signal from the wireless communication channel, the received signal including at least one field that is modulated and encoded in a substantially fixed manner, and generating at least one reference field based, at least in part, on the at least one field and on a channel estimation signal. The channel estimation signal is representative of at least one characteristic of the wireless communication channel. The method further includes the step of generating a signal quality estimate as a function of the at least one field in the received signal and the generated at least one reference field.
摘要翻译：在包括无线通信信道的无线系统中，用于估计接收信号的信号质量的方法包括以下步骤：从无线通信信道接收信号，所接收的信号包括被实质上被调制和编码的至少一个场至少部分地基于所述至少一个场和信道估计信号生成至少一个参考场。信道估计信号表示无线通信信道的至少一个特性。该方法还包括以下步骤：根据所接收的信号和所生成的至少一个参考场产生作为至少一个场的函数的信号质量估计。

9. 发明授权

US08615033B2 Data transmission rate adaptation in a wireless communication system 有权
标题翻译：无线通信系统中的数据传输速率适应
公开(公告)号：US08615033B2
公开(公告)日：2013-12-24
申请号：US12346476
申请日：2008-12-30
申请人： Jan Boer , Bas Driesen , Ra'anan Gil , Kai Roland Kriedte
发明人： Jan Boer , Bas Driesen , Ra'anan Gil , Kai Roland Kriedte
IPC分类号： H04B1/38
CPC分类号： H04L1/002 , H04L1/0002 , H04L1/206 , Y02D50/10
摘要： A method for controlling a transmission rate of at least one transceiver, the transceiver including a transmitter and a receiver, includes: determining a signal quality characteristic corresponding to a signal received at the receiver by measuring a difference between one or more reference constellation points and one or more received constellation points, and modifying a transmission rate of the transmitter over a wireless communication channel as a function of the signal quality characteristic. The step of modifying the transmission rate over the wireless communication channel includes: determining lower and upper threshold levels representing reference minimum and maximum signal quality characteristics, respectively, corresponding to the transmission rate; maintaining the transmission rate when the measured signal quality characteristic is between the lower and upper threshold levels; and increasing the transmission rate when the signal quality characteristic is less than one or more lower threshold levels associated with one or more corresponding higher transmission rates.
摘要翻译：一种用于控制至少一个收发器的传输速率的方法，所述收发器包括发射机和接收机，包括：通过测量一个或多个参考星座点与一个参考星座点之间的差异来确定与在接收机处接收到的信号相对应的信号质量特性或更多的接收到的星座点，以及作为信号质量特性的函数，通过无线通信信道修改发射机的传输速率。通过无线通信信道修改传输速率的步骤包括：分别对应于传输速率确定代表参考最小和最大信号质量特性的较低和较高阈值电平; 当测量的信号质量特性在下限阈值和上限阈值之间时，保持传输速率; 以及当信号质量特性小于与一个或多个相应较高传输速率相关联的一个或多个下限阈值时，增加传输速率。

10. 发明授权

US07526705B2 Acknowledgement message modification in communication networks 有权
标题翻译：通信网络中的确认消息修改
公开(公告)号：US07526705B2
公开(公告)日：2009-04-28
申请号：US11121191
申请日：2005-05-03
申请人： Jan Boer , Wilhelmus Diepstraten , Joachim S. Hammerschmidt , Syed Aon Mujtaba
发明人： Jan Boer , Wilhelmus Diepstraten , Joachim S. Hammerschmidt , Syed Aon Mujtaba
IPC分类号： H04L1/18 , H03M13/00
CPC分类号： H04L1/1829
摘要： A method for processing a received encoded data unit comprises: decoding the received encoded data unit; determining whether the encoded data unit has been correctly received; prior to completing the determination of whether the encoded data unit has been correctly received, initiating the transmission of an acknowledgment message; and modifying the transmission of the acknowledgment message if it is determined that the data unit has not been correctly received. In another embodiment, a station for a communications network comprises: a decoder adapted to decode a received encoded data unit; a check processor adapted to determine whether the encoded data unit has been correctly received; and a transmitter adapted to initiate the transmission of an acknowledgment message prior to the check processor completing the determination whether the encoded data unit has been correctly received. The transmitter is adapted to modify the transmission of the acknowledgment message if the check processor determines that the data unit has not been correctly received.
摘要翻译：一种用于处理接收的编码数据单元的方法包括：对所接收的编码数据单元进行解码; 确定编码数据单元是否已被正确接收; 在完成编码数据单元是否已被正确接收的确定之前，发起确认消息的发送; 以及如果确定所述数据单元未被正确接收，则修改所述确认消息的传输。在另一个实施例中，用于通信网络的站包括：适于对接收的编码数据单元进行解码的解码器; 校验处理器，用于确定编码数据单元是否已被正确接收; 以及发射机，其适于在所述检查处理器完成所述编码数据单元是否已被正确接收到的确定之前发起确认消息的传输。如果检查处理器确定数据单元未被正确接收，则发射机适于修改确认消息的传输。

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