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    • 92. 发明申请
    • COEXISTENCE OF A NORMAL-RATE PHYSICAL LAYER AND A LOW-RATE PHYSICAL LAYER IN A WIRELESS NETWORK
    • 无线网络中正常速率物理层和低速物理层的共存
    • US20130016737A1
    • 2013-01-17
    • US13550078
    • 2012-07-16
    • Raja Banerjea
    • Raja Banerjea
    • H04L29/00
    • H04W48/06H04L27/2602H04L27/2613H04L27/2692H04W48/08H04W72/0446H04W72/1257H04W72/1278H04W84/12
    • A system including a first preamble generation module, a second preamble generation module, and a packet generation module. The first preamble generation module is configured to generate a first preamble. The first preamble includes a first training field to train receivers operating at a first data rate. The second preamble generation module is configured to generate a second preamble. The second preamble includes a second training field to train receivers operating at a second data rate. The second data rate is different than the first data rate. The packet generation module is configured to generate a packet. The packet includes the second preamble followed by the first preamble in response to the packet being transmitted at the first data rate, or the first preamble followed by the second preamble in response to the packet being transmitted at the second data rate.
    • 一种包括第一前同步码生成模块,第二前同步码生成模块和分组生成模块的系统。 第一前导码生成模块被配置为生成第一前同步码。 第一前置码包括用于训练以第一数据速率操作的接收机的第一训练场。 第二前导码生成模块被配置为生成第二前同步码。 第二前导码包括用于训练以第二数据速率操作的接收机的第二训练场。 第二数据速率与第一数据速率不同。 分组生成模块被配置为生成分组。 响应于以第二数据速率发送的分组,分组包括响应于以第一数据速率发送的分组的第一前导后跟第一前同步码,或包括第二前同步码的第一前导码。
    • 94. 发明授权
    • Mesh power conservation
    • 网状节电
    • US08355380B1
    • 2013-01-15
    • US12401308
    • 2009-03-10
    • Raja Banerjea
    • Raja Banerjea
    • H04W4/00
    • H04W40/10Y02D70/142Y02D70/22Y02D70/326
    • A method and apparatus for conserving power in a mesh point in which in response to the mesh point participating in mesh activity while in an awake mode, the mesh point continues in the awake mode for a first awake time period. In response to the first awake time period expiring without the mesh point participating in the mesh activity, the mesh point is operated in a low power mode for a first sleep time period. In response to the first sleep time period expiring, the mesh point is operated in the awake mode for a second awake time period to detect additional mesh activity. And in response to the second awake time period expiring without detecting the additional mesh activity, the mesh point is operated point in the low power mode for a second sleep time period.
    • 一种用于在网状点中节省功率的方法和装置,其中响应于在唤醒模式下参与网格活动的网格点,网格点在唤醒模式中持续第一清醒时间段。 响应于没有网点参与网格活动的第一清醒时间段到期,网点在低功率模式下操作第一睡眠时间段。 响应于第一睡眠时间段到期,网状点在唤醒模式下操作第二清醒时间段以检测附加的网格活动。 并且响应于第二清醒时间段在不检测附加网格活动的情况下到期,网格点在低功率模式下操作第二睡眠时间段。
    • 95. 发明授权
    • Coexistence and collocation of remote network and local network radios
    • 远程网络和本地网络无线电的共存和配置
    • US08345607B2
    • 2013-01-01
    • US12396844
    • 2009-03-03
    • Raja Banerjea
    • Raja Banerjea
    • H04J1/00
    • H04W72/0413H04W16/14H04W72/1215H04W88/06
    • A coexistent communication system of a first network device includes a remote network radio. The remote network radio has a remote transmission distance, operates based on remote network protocols, and communicates with a base station using a first communication link corresponding to a first frequency band. A local network radio has a local transmission distance and is collocated with the remote network radio. The local network radio operates based on local network protocols that are different than the remote network protocols and communicates with a second network device using a second communication link corresponding to a second frequency band. A control module at least one of schedules communication on the first communication link and the second communication link and adjusts a transmission parameter of one of the remote network radio and the local network radio. Transmission distance of the remote network radio is greater than transmission distance of the local network radio.
    • 第一网络设备的共存通信系统包括远程网络无线电。 远程网络无线电具有远程传输距离,基于远程网络协议进行操作,并使用与第一频带对应的第一通信链路与基站进行通信。 本地网络无线电具有本地传输距离,并与远程网络收音机并置。 本地网络无线电基于与远程网络协议不同的本地网络协议进行操作,并使用与第二频带对应的第二通信链路与第二网络设备进行通信。 控制模块,在所述第一通信链路和所述第二通信链路上进行通信的调度中的至少一个,并且调整所述远程网络无线电和所述本地网络无线电之一的传输参数。 远程网络无线电的传输距离大于本地网络广播的传输距离。
    • 96. 发明申请
    • LOW BANDWIDTH PHY FOR WLAN
    • WLAN的低带宽PHY
    • US20120324315A1
    • 2012-12-20
    • US13494505
    • 2012-06-12
    • Hongyuan ZhangRaja BanerjeaSudhir Srinivasa
    • Hongyuan ZhangRaja BanerjeaSudhir Srinivasa
    • H03M13/05G06F11/10
    • 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。 产生第二数据单元包括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。
    • 97. 发明授权
    • Coexistence mechanism for WiMAX and IEEE 802.11
    • WiMAX和IEEE 802.11的共存机制
    • US08134988B2
    • 2012-03-13
    • US12388831
    • 2009-02-19
    • Raja BanerjeaHarish Ramamurthy
    • Raja BanerjeaHarish Ramamurthy
    • H04W88/06
    • H04W72/1215H04W16/14H04W88/06
    • A network device includes a first communication module and a second communication module. The first communication module communicates with a first device using a first wireless communication standard. The first communication module receives data from the first device during a first time period and transmits data to the first device during a second time period. The second communication module communicates with a second device using a second wireless communication standard. The second communication module receives a block of packets from the second device during the first time period. The second communication module transmits an acknowledgement to the second device during the second time period when the block of the packets is received.
    • 网络设备包括第一通信模块和第二通信模块。 第一通信模块使用第一无线通信标准与第一设备进行通信。 第一通信模块在第一时间段期间从第一设备接收数据,并且在第二时间段期间将数据发送到第一设备。 第二通信模块使用第二无线通信标准与第二设备进行通信。 第二通信模块在第一时间段期间从第二设备接收分组块。 第二通信模块在接收到分组的块的第二时间段期间向第二设备发送确认。