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    • 5. 发明申请
    • LONG RANGE WLAN DATA UNIT FORMAT
    • 长距离WLAN数据单元格式
    • WO2013025820A3
    • 2013-07-11
    • PCT/US2012050975
    • 2012-08-15
    • MARVELL WORLD TRADE LTDLIU YONGRAMAMURTHY HARISHZHANG HONGYUAN
    • LIU YONGRAMAMURTHY HARISHZHANG HONGYUAN
    • H04L27/26
    • H04L27/2613H04L5/0053H04L5/0091H04L27/0006H04L27/2602H04W8/26H04W28/06H04W72/08H04W84/12
    • In a method for transmitting a data unit in a wireless communication network, a physical layer (PHY) preamble and a media access control layer (MAC) header are generated. In generating the MAC header, a first address field to include a first address and a second address field to include a second address are generated. The first, not globally unique, address indicates a communication device for which the data unit is intended or a communication device that is transmitting the data unit. The second address field indicates the other one of a communication device for which the data unit is intended or a communication device that is transmitting the data unit. The first address field and the second address field are included in the MAC header. The MAC header omits a globally unique address corresponding to the first address of the first address field.
    • 在用于在无线通信网络中传输数据单元的方法中,生成物理层(PHY)前导码和媒体访问控制层(MAC)报头。 在生成MAC报头时,生成包括第一地址的第一地址字段和包括第二地址的第二地址字段。 第一个非全球唯一的地址指示数据单元所针对的通信设备或正在传输数据单元的通信设备。 第二地址字段指示数据单元所针对的通信设备或发送数据单元的通信设备中的另一个。 第一地址字段和第二地址字段被包括在MAC报头中。 MAC报头省略了与第一地址字段的第一地址对应的全局唯一地址。
    • 9. 发明申请
    • LOW BANDWIDTH PHY FOR WLAN
    • WLAN的低带宽PHY
    • WO2012173975A3
    • 2013-05-10
    • PCT/US2012042027
    • 2012-06-12
    • MARVELL WORLD TRADE LTDZHANG HONGYUANBANERJEA RAJASRINIVASA SUDHIR
    • ZHANG HONGYUANBANERJEA RAJASRINIVASA SUDHIR
    • H04L1/00H04L1/08H04L5/00H04L27/26
    • H04L1/004H04L1/0025H04L1/0043H04L1/0057H04L1/0061H04L1/08H04L7/048H04L27/2602H04L27/2613
    • A method includes generating first and second data units corresponding to first and second PHY modes, respectively. Generating the first data unit includes FEC encoding first information bits, mapping the FEC-encoded bits to first constellation symbols, and generating first OFDM symbols to include the first constellation symbols. The first OFDM symbols utilize a first tone spacing, and include a first number of non-zero tones collectively spanning a first bandwidth. Generating the second data unit includes FEC encoding second information bits, block encoding the FEC-encoded bits, mapping the block-encoded bits to second constellation symbols, and generating second OFDM symbols to include the second constellation symbols. The second OFDM symbols utilize the first tone spacing, and include a second number of non-zero tones collectively spanning a second bandwidth less than the first bandwidth. The second number of non-zero tones is less than the first number of non-zero tones.
    • 一种方法包括分别产生对应于第一和第二PHY模式的第一和第二数据单元。 生成第一数据单元包括FEC编码第一信息比特,将FEC编码比特映射到第一星座符号,以及生成第一OFDM符号以包括第一星座符号。 第一OFDM符号利用第一音调间隔,并且包括共同跨越第一带宽的第一数量的非零音调。 生成第二数据单元包括FEC编码第二信息比特,对FEC编码比特进行块编码,将块编码比特映射到第二星座符号,以及生成第二OFDM符号以包括第二星座符号。 第二OFDM符号利用第一音调间隔,并且包括共同跨越小于第一带宽的第二带宽的第二数量的非零音调。 第二数量的非零音调小于第一个非零音调数。
    • 10. 发明申请
    • COMPRESSED FEEDBACK FORMAT FOR WLAN
    • 压缩反馈格式的WLAN
    • WO2012047855A3
    • 2012-07-26
    • PCT/US2011054725
    • 2011-10-04
    • MARVELL WORLD TRADE LTDZHANG HONGYUANSRINIVASA SUDHIRKWON HYUKJOONBANERJEA RAJA
    • ZHANG HONGYUANSRINIVASA SUDHIRKWON HYUKJOONBANERJEA RAJA
    • H04L25/02H04L1/00H04L25/03
    • H04L27/2646H04B7/0617H04B7/066H04L1/06H04L1/0618H04L1/0693H04L5/0023H04L5/0053H04L5/0057H04L25/0204H04L25/03343H04L2025/03414H04L2025/03426H04L2025/03808H04W24/10
    • In a method for transmitting channel feedback data from a receiver to a transmitter, channel data for a plurality of orthogonal frequency division multiplexing (OFDM) tones for one or more spatial or space-time streams corresponding to the communication channel is determined. A compressed form of the channel data is determined. Determining the compressed form includes determining a plurality of angle values associated with the one or more spatial or space-time streams and the one or more OFDM tones of the plurality of OFDM tones. For each of the one or more spatial or space time streams, a per-tone signal to noise ratio (PT-SNR) associated with one or more OFDM tone of the plurality of OFDM tones is determined, and an average signal to noise ratio (avg-SNR) is determined by averaging signal to noise ratio (SNR) values corresponding to one or more OFDM tones of the plurality of OFDM tones. A feedback report is generated to include at least i) the plurality of angle values corresponding to the one or more spatial or space-time streams and the one or more OFDM tones, ii) the PT-SNRs corresponding to the one or more spatial or space-time streams and the one or more OFDM tones, and iii) the avg-SNR corresponding to the one or more spatial or space-time streams. The feedback report is included in a data unit to be transmitted from the receiver to the transmitter.
    • 在从接收机向发射机发送信道反馈数据的方法中,确定与通信信道相对应的一个或多个空时或时空流的多个正交频分复用(OFDM)音调的信道数据。 确定通道数据的压缩形式。 确定压缩形式包括确定与一个或多个空间或时空流相关联的多个角度值以及多个OFDM音调中的一个或多个OFDM音调。 对于一个或多个空间或空间时间流中的每一个,确定与多个OFDM音调中的一个或多个OFDM音调相关联的每音调信噪比(PT-SNR),并且确定平均信噪比 avg-SNR)通过对应于多个OFDM音调中的一个或多个OFDM音调的信噪比(SNR)值求平均值来确定。 生成反馈报告至少包括i)对应于一个或多个空间或时空流和一个或多个OFDM音调的多个角度值,ii)对应于一个或多个空间或 空时流和一个或多个OFDM音调,以及iii)对应于一个或多个空间或时空流的平均SNR。 反馈报告被包括在要从接收器发送到发送器的数据单元中。