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    • 6. 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
    • WLAN CHANNEL ALLOCATION IN UNUSED TV FREQUENCY
    • WLAN通道在无人看管的频率分配
    • WO2012109369A3
    • 2012-11-08
    • PCT/US2012024351
    • 2012-02-08
    • MARVELL WORLD TRADE LTDBANERJEA RAJAZHANG HONGYUANLAMBERT PAUL A
    • BANERJEA RAJAZHANG HONGYUANLAMBERT PAUL A
    • H04W72/04
    • H04W72/044H04W72/0453
    • An available Television, TV, frequency band for communication is determined and a frequency fc of a carrier is determined based on the available frequency band. The carrier is set by an access point, AP, to the frequency fc for communicating with one or more communication devices via a first communication channel within the available frequency band. After communicating via the first communication channel, the carrier frequency fc is used for communicating with one or more communication devices via a second communication channel within the available bandwidth. A center frequency of the first channel is different that a center frequency of the second channel. Local oscillator frequency determine available TV channels, TVWS (TV Whitespace) from a database. Obtain available TV channels according to location of access point, AP.
    • 确定用于通信的可用电视,TV,频带,并且基于可用频带确定载波的频率fc。 载波由接入点AP设置到频率fc,用于经由可用频带内的第一通信信道与一个或多个通信设备进行通信。 在通过第一通信信道进行通信之后,载波频率fc用于经由可用带宽内的第二通信信道与一个或多个通信设备进行通信。 第一通道的中心频率不同于第二通道的中心频率。 本地振荡器频率从数据库中确定可用的电视频道,TVWS(TV Whitespace)。 根据接入点AP的位置获取可用的电视频道。