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公开(公告)号：US20130259017A1
公开(公告)日：2013-10-03
申请号：US13856277
申请日：2013-04-03
IPC分类号： H04W84/02
CPC分类号： H04L1/009 , H03M13/098 , H03M13/655 , H04L1/0041 , H04L1/0061 , H04L1/0072 , H04L1/0079 , H04L5/0007 , H04W84/02
摘要： In a method for generating a data unit conforming to a first communication protocol, a first field and a second field to be included in a preamble of the data unit are generated. The first field includes a first set of one or more information bits that indicate a duration of the data unit and is formatted such that the first field allows a receiver device that conforms to a second communication protocol to determine the duration of the data unit. The second field includes a second set of one or more information bits that indicate to a receiver device that conforms to the first communication protocol that the data unit conforms to the first communication protocol. The first field and the second field are modulated using a modulation scheme specified for a field corresponding to the first field and the second field, respectively, by the second communication protocol.
摘要翻译： 在用于生成符合第一通信协议的数据单元的方法中，生成要包括在数据单元的前导码中的第一字段和第二字段。 第一字段包括指示数据单元的持续时间并且被格式化的一个或多个信息比特的第一组，使得第一场允许符合第二通信协议的接收机设备确定数据单元的持续时间。 第二字段包括一个或多个信息比特的第二组，其向符合第一通信协议的接收机设备指示数据单元符合第一通信协议。 通过第二通信协议，分别使用针对对应于第一场和第二场的场指定的调制方案来调制第一场和第二场。
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公开(公告)号：US20120201316A1
公开(公告)日：2012-08-09
申请号：US13366064
申请日：2012-02-03
申请人： Hongyuan Zhang , Rohit U. Nabar , Raja Banerjea , Yong Liu , Sudhir Srinivasa , Hyukjoon Kwon
发明人： Hongyuan Zhang , Rohit U. Nabar , Raja Banerjea , Yong Liu , Sudhir Srinivasa , Hyukjoon Kwon
IPC分类号： H04L27/28
CPC分类号： H04L27/2602 , H03M13/23 , H04L1/0046 , H04L1/0065 , H04L1/0072 , H04L1/08 , H04L27/2613 , H04L27/265
摘要： In a method for generating a physical layer (PHY) data unit for transmission via a communication channel, information bits to be included in the PHY data unit are encoded using a forward error correction (FEC) encoder. The information bits are mapped to a constellation symbols. Additionally, either the information bits are encoded according to a block coding scheme, or the constellation symbols are encoded according to the block coding scheme. Orthogonal frequency division multiplexing (OFDM) symbols are generated to include the constellation symbols and the PHY data unit is generated to include the OFDM symbols.
摘要翻译： 在通过通信信道生成用于发送的物理层（PHY）数据单元的方法中，使用前向纠错（FEC）编码器对要包括在PHY数据单元中的信息比特进行编码。 信息位被映射到星座符号。 另外，根据块编码方案对信息比特进行编码，或者根据块编码方案对星座符号进行编码。 生成正交频分复用（OFDM）符号以包括星座符号，并且生成PHY数据单元以包括OFDM符号。
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公开(公告)号：US09130727B2
公开(公告)日：2015-09-08
申请号：US13366064
申请日：2012-02-03
申请人： Hongyuan Zhang , Rohit U. Nabar , Raja Banerjea , Yong Liu , Sudhir Srinivasa , Hyukjoon Kwon
发明人： Hongyuan Zhang , Rohit U. Nabar , Raja Banerjea , Yong Liu , Sudhir Srinivasa , Hyukjoon Kwon
CPC分类号： H04L27/2602 , H03M13/23 , H04L1/0046 , H04L1/0065 , H04L1/0072 , H04L1/08 , H04L27/2613 , H04L27/265
摘要： In a method for generating a physical layer (PHY) data unit for transmission via a communication channel, information bits to be included in the PHY data unit are encoded using a forward error correction (FEC) encoder. The information bits are mapped to a constellation symbols. Additionally, either the information bits are encoded according to a block coding scheme, or the constellation symbols are encoded according to the block coding scheme. Orthogonal frequency division multiplexing (OFDM) symbols are generated to include the constellation symbols and the PHY data unit is generated to include the OFDM symbols.
摘要翻译： 在通过通信信道生成用于发送的物理层（PHY）数据单元的方法中，使用前向纠错（FEC）编码器对要包括在PHY数据单元中的信息比特进行编码。 信息位被映射到星座符号。 另外，根据块编码方案对信息比特进行编码，或者根据块编码方案对星座符号进行编码。 生成正交频分复用（OFDM）符号以包括星座符号，并且生成PHY数据单元以包括OFDM符号。
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公开(公告)号：US08885740B2
公开(公告)日：2014-11-11
申请号：US13366038
申请日：2012-02-03
申请人： Hongyuan Zhang , Rohit U. Nabar , Raja Banerjea , Yong Liu , Sudhir Srinivasa , Hyukjoon Kwon
发明人： Hongyuan Zhang , Rohit U. Nabar , Raja Banerjea , Yong Liu , Sudhir Srinivasa , Hyukjoon Kwon
CPC分类号： H04L27/2602 , H03M13/23 , H04L1/0046 , H04L1/0065 , H04L1/0072 , H04L1/08 , H04L27/2613 , H04L27/265
摘要： A first preamble for a first data unit includes a first long training field and a first signal field modulated according to a first technique. The first data unit is generated according to a first data unit format and includes the first preamble. A second preamble, generated for a second data unit, includes a second signal field and a second long training field. Information in the second signal field is repeated and/or the second long training field is generated so that a duration of the second long training field is longer than a duration of the first long training field. A portion of the second signal field is modulated according to a second technique or a portion of the second long training field is modulated according to the second technique to signal to a receiver that the second data unit is formatted according to a second data unit format.
摘要翻译： 第一数据单元的第一前同步码包括第一长训练场和根据第一技术调制的第一信号场。 第一数据单元根据第一数据单元格式生成并包括第一前导码。 为第二数据单元生成的第二前导码包括第二信号字段和第二长训练字段。 重复第二信号字段中的信息和/或生成第二长训练场，使得第二长训练场的持续时间长于第一长训练场的持续时间。 根据第二技术调制第二信号场的一部分，或根据第二技术对第二长训练场的一部分进行调制，以向接收机发信号，根据第二数据单元格式对第二数据单元进行格式化。
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公开(公告)号：US20120201315A1
公开(公告)日：2012-08-09
申请号：US13366038
申请日：2012-02-03
申请人： Hongyuan Zhang , Rohit U. Nabar , Raja Banerjea , Yong Liu , Sudhir Srinivasa , Hyukjoon Kwon
发明人： Hongyuan Zhang , Rohit U. Nabar , Raja Banerjea , Yong Liu , Sudhir Srinivasa , Hyukjoon Kwon
CPC分类号： H04L27/2602 , H03M13/23 , H04L1/0046 , H04L1/0065 , H04L1/0072 , H04L1/08 , H04L27/2613 , H04L27/265
摘要： A first preamble for a first data unit includes a first long training field and a first signal field modulated according to a first technique. The first data unit is generated according to a first data unit format and includes the first preamble. A second preamble, generated for a second data unit, includes a second signal field and a second long training field. Information in the second signal field is repeated and/or the second long training field is generated so that a duration of the second long training field is longer than a duration of the first long training field. A portion of the second signal field is modulated according to a second technique or a portion of the second long training field is modulated according to the second technique to signal to a receiver that the second data unit is formatted according to a second data unit format.
摘要翻译： 第一数据单元的第一前同步码包括第一长训练场和根据第一技术调制的第一信号场。 第一数据单元根据第一数据单元格式生成并包括第一前导码。 为第二数据单元生成的第二前导码包括第二信号字段和第二长训练字段。 重复第二信号字段中的信息和/或生成第二长训练场，使得第二长训练场的持续时间长于第一长训练场的持续时间。 根据第二技术调制第二信号场的一部分，或根据第二技术对第二长训练场的一部分进行调制，以向接收机发信号，根据第二数据单元格式对第二数据单元进行格式化。
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公开(公告)号：US20100260159A1
公开(公告)日：2010-10-14
申请号：US12758603
申请日：2010-04-12
申请人： Hongyuan Zhang , Hui-Ling Lou , Rohit U. Nabar , Sudhir Srinivasa , Mao Yu , Raja Banerjea
发明人： Hongyuan Zhang , Hui-Ling Lou , Rohit U. Nabar , Sudhir Srinivasa , Mao Yu , Raja Banerjea
IPC分类号： H04W4/00
CPC分类号： H04L1/0079 , H04L1/0072 , H04L1/009 , H04L27/2613 , H04L69/18 , H04W28/06 , H04W84/12 , H04W99/00
摘要： In a method for generating a data unit for transmission via a communication channel, wherein the data unit conforms to a first communication protocol, a preamble of the data unit is generated. The preamble includes a first field having information that indicates a duration of the data unit, the first field being formatted such that the first field is decodable by a receiver device that conforms to a second communication protocol but does not conform to the first communication protocol to determine the duration of the data unit based on the first field. Additionally, the preamble is formatted such that a portion of the preamble is decodable by a receiver device that conforms to a third communication protocol but does not conform to the first communication protocol. Also, the preamble is formatted such that a receiver device that conforms to the first communication protocol can determine that the data unit conforms to the first communication protocol. A data portion of the data unit that conforms to the first communication protocol and does not conform to either (i) the second communication protocol or (ii) the third communication protocol is generated.
摘要翻译： 在通过通信信道生成用于发送的数据单元的方法中，其中数据单元符合第一通信协议，生成数据单元的前同步码。 前导码包括具有指示数据单元的持续时间的信息的第一字段，第一字段被格式化，使得第一字段可由符合第二通信协议但不符合第一通信协议的接收机设备解码， 基于第一个字段确定数据单元的持续时间。 另外，前导码被格式化，使得前导码的一部分可以由符合第三通信协议但不符合第一通信协议的接收机设备解码。 此外，前导码格式化使得符合第一通信协议的接收机设备可以确定数据单元符合第一通信协议。 产生符合第一通信协议并且不符合（i）第二通信协议或（ii）第三通信协议的数据单元的数据部分。
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公开(公告)号：US09655002B2
公开(公告)日：2017-05-16
申请号：US12758603
申请日：2010-04-12
申请人： Hongyuan Zhang , Hui-Ling Lou , Rohit U. Nabar , Sudhir Srinivasa , Mao Yu , Raja Banerjea
发明人： Hongyuan Zhang , Hui-Ling Lou , Rohit U. Nabar , Sudhir Srinivasa , Mao Yu , Raja Banerjea
CPC分类号： H04L1/0079 , H04L1/0072 , H04L1/009 , H04L27/2613 , H04L69/18 , H04W28/06 , H04W84/12 , H04W99/00
摘要： In a method for generating a data unit for transmission via a communication channel, wherein the data unit conforms to a first communication protocol, a preamble of the data unit is generated. The preamble includes a first field having information that indicates a duration of the data unit, the first field being formatted such that the first field is decodable by a receiver device that conforms to a second communication protocol but does not conform to the first communication protocol to determine the duration of the data unit based on the first field. Additionally, the preamble is formatted such that a portion of the preamble is decodable by a receiver device that conforms to a third communication protocol but does not conform to the first communication protocol. Also, the preamble is formatted such that a receiver device that conforms to the first communication protocol can determine that the data unit conforms to the first communication protocol. A data portion of the data unit that conforms to the first communication protocol and does not conform to either (i) the second communication protocol or (ii) the third communication protocol is generated.
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公开(公告)号：US08379757B1
公开(公告)日：2013-02-19
申请号：US12789325
申请日：2010-05-27
IPC分类号： H04L27/00
CPC分类号： H04L27/2627 , H04J3/0697 , H04L27/2626 , H04L27/2657 , H04L27/2675
摘要： Systems and techniques relating to wireless local area network devices include a method involving generating a baseband signal indicative of one or more symbols, modulating the baseband signal at a carrier frequency to produce a modulated signal, transmitting the modulated signal via a wireless channel, and providing a clock signal to control, in the baseband signal, a duration of the one or more symbols. Providing the clock signal can include selectively using a first clock frequency to generate a first baseband signal having a first bandwidth. Providing the clock signal can include selectively using a second, lower clock frequency to generate a second baseband signal having a second, lower bandwidth. The second clock frequency can be used to extend a wireless communication range of the wireless channel.
摘要翻译： 与无线局域网设备相关的系统和技术包括生成表示一个或多个符号的基带信号的方法，以载波频率调制基带信号以产生调制信号，经由无线信道发送调制信号，并提供 在基带信号中控制一个或多个符号的持续时间的时钟信号。 提供时钟信号可以包括选择性地使用第一时钟频率来产生具有第一带宽的第一基带信号。 提供时钟信号可以包括选择性地使用第二较低时钟频率来产生具有第二较低带宽的第二基带信号。 第二时钟频率可以用于扩展无线信道的无线通信范围。
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公开(公告)号：US08724720B2
公开(公告)日：2014-05-13
申请号：US12846681
申请日：2010-07-29
申请人： Sudhir Srinivasa , Hongyuan Zhang , Rohit U. Nabar
发明人： Sudhir Srinivasa , Hongyuan Zhang , Rohit U. Nabar
IPC分类号： H04L27/28
CPC分类号： H04L1/0005 , H04L1/0016 , H04L27/2607 , H04L27/2608 , H04L27/34 , H04W84/12
摘要： In a method for generating a physical layer (PHY) data unit for transmission via a communication channel, a first set of modulation coding schemes (MCSs) and a second set of MCSs that correspond to a number of spatial streams and a number of encoders are provided. The first set of MCSs correspond to a first channel bandwidth and the second set of MCSs correspond to a second channel bandwidth, and the first set of MCSs is different than the second set of MCSs. An MCS is selected from the first set of MCSs when the PHY data unit is to be transmitted using a channel having the first channel bandwidth, and the MCS is selected from the second set of MCSs when the PHY data unit is to be transmitted using a channel having the second channel bandwidth. Information bits are encoded using the number of encoders and according to the selected MCS, and the encoded information bits are parsed into the number of spatial streams. The encoded information bits are modulated according to the MCS, and a plurality of OFDM symbols are formed based on the modulated encoded information bits.
摘要翻译： 在用于生成经由通信信道进行传输的物理层（PHY）数据单元的方法中，与多个空间流和多个编码器相对应的第一组调制编码方案（MCS）和第二组MCS相对应， 提供。 第一组MCS对应于第一信道带宽，并且第二组MCS对应于第二信道带宽，并且第一组MCS不同于第二组MCS。 当要使用具有第一信道带宽的信道来发送PHY数据单元时，从第一组MCS中选择MCS，并且当使用第一组MCS发送PHY数据单元时，从第二组MCS中选择MCS 信道具有第二信道带宽。 使用编码器的数量并根据所选择的MCS对信息比特进行编码，并将编码的信息比特解析为空间流的数量。 编码信息比特根据MCS进行调制，并且基于调制编码信息比特形成多个OFDM符号。
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公开(公告)号：US08681884B2
公开(公告)日：2014-03-25
申请号：US12846681
申请日：2010-07-29
申请人： Sudhir Srinivasa , Hongyuan Zhang , Rohit U. Nabar
发明人： Sudhir Srinivasa , Hongyuan Zhang , Rohit U. Nabar
IPC分类号： H04L27/28
摘要： In a method for generating a physical layer (PHY) data unit for transmission via a communication channel, a first set of modulation coding schemes (MCSs) and a second set of MCSs that correspond to a number of spatial streams and a number of encoders are provided. The first set of MCSs correspond to a first channel bandwidth and the second set of MCSs correspond to a second channel bandwidth, and the first set of MCSs is different than the second set of MCSs. An MCS is selected from the first set of MCSs when the PHY data unit is to be transmitted using a channel having the first channel bandwidth, and the MCS is selected from the second set of MCSs when the PHY data unit is to be transmitted using a channel having the second channel bandwidth. Information bits are encoded using the number of encoders and according to the selected MCS, and the encoded information bits are parsed into the number of spatial streams. The encoded information bits are modulated according to the MCS, and a plurality of OFDM symbols are formed based on the modulated encoded information bits.
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