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    • 82. 发明申请
    • METHODS AND APPARATUS FOR MEASURING AND/OR USING TRANSMITTER AND/OR RECEIVER IQ IMBALANCE INFORMATION AND/OR DC OFFSET INFORMATION
    • 用于测量和/或使用发射器和/或接收器的方法和装置IQ不平等信息和/或DC偏移信息
    • US20110207418A1
    • 2011-08-25
    • US12712330
    • 2010-02-25
    • Rajiv LaroiaJuergen CezanneAleksandar Jovicic
    • Rajiv LaroiaJuergen CezanneAleksandar Jovicic
    • H04B1/40
    • H03D3/009H03D3/008H03D7/18
    • A wireless communications device, e.g., a mobile node supporting direct peer to peer communications, performs a self-calibration of one or more of: receiver IQ imbalance, transmitter IQ imbalance, receiver DC offset, and transmitter DC offset. The wireless communications device, operating in calibration mode, intentionally sets the oscillator frequency used for downconversion in its receiver module to a different frequency than the oscillator frequency used for upconversion in its transmitter module. A first baseband signal, e.g., a single tone test signal, is input to the transmitter module and an upconverted transmit signal is generated. The transmit signal is routed via a feedback loop to the receiver, which performs a downconversion operation. Power and/or phase measurements of the signals output from the downcoversion are used to determine IQ imbalance compensation information and DC offset compensation information. The determined compensation information is used subsequently when operating in a communications mode of operation.
    • 无线通信设备,例如支持直接对等通信的移动节点,执行接收机IQ不平衡,发射机IQ不平衡,接收机DC偏移和发射机DC偏移中的一个或多个的自校准。 在校准模式下工作的无线通信设备将其接收机模块中用于下变频的振荡器频率有意地设置为与发射机模块中用于上变频的振荡器频率不同的频率。 将第一基带信号,例如单音测试信号输入到发射机模块,并产生上变频的发射信号。 发送信号通过反馈回路路由到接收机,接收机执行下变频操作。 用于从下变频输出的信号的功率和/或相位测量用于确定IQ不平衡补偿信息和DC偏移补偿信息。 当在通信操作模式下操作时,所确定的补偿信息被随后使用。
    • 83. 发明申请
    • COMMUNICATION METHODS AND APPARATUS
    • 通信方法和设备
    • US20100272081A1
    • 2010-10-28
    • US12427890
    • 2009-04-22
    • Rajiv LaroiaJunyi LiVincent D. ParkYing WangAleksandar Jovicic
    • Rajiv LaroiaJunyi LiVincent D. ParkYing WangAleksandar Jovicic
    • H04W4/00
    • H04W72/042H04W4/12H04W76/28
    • Methods and apparatus well suited for efficiently communicating small amounts of information relatively frequently in a wireless communications system are described. An uplink timing frequency structure for an access point includes a set of dedicated uplink communications resources, e.g., expression advertisement interval air link resources. Different ones of the set of dedicated uplink communications resources correspond to different individual wireless communications devices currently registered with the access point. In the downlink timing frequency structure for the access point there are dedicated downlink broadcast communications resources, e.g., expression broadcast interval air link resources and neighbor expression broadcast interval air link resources. Information received on dedicated uplink air link resources is echoed back or selectively echoed back on the dedicated downlink air link resources. Wireless communications devices monitor downlink dedicated air link resources to recover expression information being communicated by other wireless communications devices in its local vicinity.
    • 描述了非常适合于在无线通信系统中相对频繁地有效地传送少量信息的方法和装置。 用于接入点的上行链路定时频率结构包括一组专用上行链路通信资源,例如表达广告间隔空中链路资源。 专用上行链路通信资源集合中的不同的对应于当前在接入点上登记的不同的单独无线通信设备。 在接入点的下行链路定时频率结构中,存在专用的下行链路广播通信资源,例如表达广播间隔空中链路资源和邻居表达广播间隔空中链路资源。 在专用上行链路空中链路资源上接收的信息在专用下行链路空中链路资源上被回送或选择性地回传。 无线通信设备监视下行链路专用空中链路资源,以恢复由其本地附近的其他无线通信设备传送的表情信息。
    • 84. 发明申请
    • METHODS AND APPARATUS FOR PEER DISCOVERY IN A COMMUNICATIONS SYSTEM
    • 通信系统中同伴发现的方法和设备
    • US20100254308A1
    • 2010-10-07
    • US12417383
    • 2009-04-02
    • Rajiv LaroiaJunyi LiVincent D. ParkYing WangAleksandar Jovicic
    • Rajiv LaroiaJunyi LiVincent D. ParkYing WangAleksandar Jovicic
    • H04W88/08
    • H04W8/005H04W8/186H04W48/14
    • Methods and apparatus supporting enhanced discovery operations in peer to peer networks are described. Peer discovery, based on direct peer to peer discovery between two mobile nodes can be somewhat limited, e.g., due to power limitations, processing power, and/or channel conditions. An access point, e.g., base station, monitors for and receives peer discovery signals conveying a set of identifiers from a wireless communications device. The access point retransmits at least one identifier in the set in a wireless peer to peer communications channel. Thus the access point effectively extends the peer discovery range for wireless communications devices utilizing the peer to peer network. Wireless communications devices can monitor for and recover the rebroadcast peer discovery signals from access points. Thus, via access point signaling a wireless communications device can be made situationally aware of other devices of interest which would be otherwise outside its discovery detection range.
    • 描述了支持对等网络中增强发现操作的方法和装置。 基于两个移动节点之间的直接对等点发现的对等体发现可以受到一些限制,例如由于功率限制,处理能力和/或信道条件。 接入点,例如基站,监视和接收从无线通信设备传送一组标识符的对等体发现信号。 接入点在无线对等通信信道中重发集合中的至少一个标识符。 因此,接入点有效地扩展了利用对等网络的无线通信设备的对等体发现范围。 无线通信设备可以监视和恢复来自接入点的重播对等体发现信号。 因此,通过接入点信令,可以使无线通信设备在情境上意识到其他在其发现检测范围之外的感兴趣的设备。
    • 85. 发明申请
    • AUTOMATIC GAIN CONTROL IN A WIRELESS COMMUNICATION NETWORK
    • 无线通信网络中的自动增益控制
    • US20100190459A1
    • 2010-07-29
    • US12359595
    • 2009-01-26
    • Junyi LiYing WangThomas RichardsonAleksandar Jovicic
    • Junyi LiYing WangThomas RichardsonAleksandar Jovicic
    • H04B1/06
    • H03G3/3078H03G3/3089H04W52/383H04W52/52
    • Techniques for performing automatic gain control (AGC) at a terminal in a wireless communication network are described. In an aspect, the terminal may use different receiver gain settings to receive different types of signals in different time intervals. The terminal may determine a receiver gain setting for each signal type and may use the receiver gain setting to receive signals of that signal type. In another aspect, the terminal may determine a receiver gain setting for a future time interval based on received power levels for peer terminals expected to transmit in that time interval. The terminal may measure received power levels of signals received from a plurality of terminals. The terminal may determine a set of terminals expected to transmit in the future time interval and may determine the receiver gain setting for the future time interval based on the measured received power levels for the set of terminals.
    • 描述了在无线通信网络中的终端处执行自动增益控制(AGC)的技术。 在一方面,终端可以使用不同的接收机增益设置来以不同的时间间隔接收不同类型的信号。 终端可以确定每个信号类型的接收机增益设置,并且可以使用接收机增益设置来接收该信号类型的信号。 在另一方面,终端可以基于期望在该时间间隔中发送的对等终端的接收功率电平来确定未来时间间隔的接收机增益设置。 终端可以测量从多个终端接收的信号的接收功率电平。 终端可以确定期望在未来时间间隔中发送的一组终端,并且可以基于所测量的终端集合的接收功率电平来确定未来时间间隔的接收机增益设置。
    • 87. 发明申请
    • METHODS AND APPARATUS FOR SUPPORTING MULTIPLE COMMUNICATIONS MODES OF OPERATION
    • 支持多种通信操作模式的方法和装置
    • US20090040996A1
    • 2009-02-12
    • US12246922
    • 2008-10-07
    • Rajiv LaroiaJunyi LiThomas RichardsonXinzhou WuAleksandar Jovicic
    • Rajiv LaroiaJunyi LiThomas RichardsonXinzhou WuAleksandar Jovicic
    • H04J1/00
    • H04W72/06H04W48/08H04W84/042H04W88/06
    • Methods and apparatus for supporting multiple modes of communication operation, e.g., with different parameters and/or frequency bands being used in the different modes of operation are described. One or more adjustments are made based on a signal or signals received in a first frequency band from a second communications device, e.g., an access router with reliable timing. The communications device selects between and operates in either the first frequency band, e.g., a WAN frequency band, or in a second frequency band, e.g., a LAN frequency band. The WAN and LAN frequency bands may be non-overlapping. One or more parameters used in the second frequency band have a predetermined relationship to one or more parameters used for communications in the first frequency band making the adjustment based on the signal received in the first frequency band relevant and useful to support communications in the second frequency band.
    • 描述了用于支持多种通信操作模式的方法和装置,例如在不同的操作模式中使用不同的参数和/或频带。 基于来自第二通信设备(例如具有可靠定时的接入路由器)在第一频带中接收的信号或信号进行一个或多个调整。 通信设备在第一频带(例如,WAN频带)中或在第二频带(例如,LAN频带)中进行选择和操作。 WAN和LAN频段可能不重叠。 在第二频带中使用的一个或多个参数与用于第一频带中的通信的一个或多个参数具有预定关系,从而基于在第一频带中接收到的信号进行调整,该信号相关并且有助于支持第二频率中的通信 带。
    • 88. 发明申请
    • PERFORMING PAGING IN A WIRELESS PEER-TO-PEER NETWORK
    • 在无线对等网络中执行寻呼
    • US20090017843A1
    • 2009-01-15
    • US11775461
    • 2007-07-10
    • Rajiv LaroiaAleksandar JovicicJunyi LiThomas RichardsonXinzhou Wu
    • Rajiv LaroiaAleksandar JovicicJunyi LiThomas RichardsonXinzhou Wu
    • H04Q7/20
    • H04W76/14H04W68/00H04W72/02H04W76/11
    • Systems and methodologies are described that facilitate paging within a peer-to-peer communication network. A first wireless terminal monitors the paging channel of a wide area network. When a second wireless terminal intends to establish a peer-to-peer connection with the first wireless terminal, the second wireless terminal generates a paging message and transfers the message to the WAN, which routes the paging message to a base station. The base station uses its paging channel to send a paging message to the target first wireless terminal. The paging message indicates to the target first wireless terminal that the second wireless terminal intends to establish a peer-to-peer connection with the first wireless terminal. The paging message may further include parameters to be used to establish the peer-to-peer connection. Upon reception of the paging message, the second wireless terminal sends a signal directly to the first wireless terminal to start the direct peer-to-peer communication.
    • 描述了促进对等通信网络内的寻呼的系统和方法。 第一无线终端监视广域网的寻呼信道。 当第二无线终端意图与第一无线终端建立点对点连接时,第二无线终端生成寻呼消息,并将该消息传送到WAN,将该寻呼消息路由到基站。 基站使用其寻呼信道向目标第一无线终端发送寻呼消息。 寻呼消息向目标第一无线终端指示第二无线终端旨在建立与第一无线终端的对等连接。 寻呼消息还可以包括用于建立对等连接的参数。 在接收到寻呼消息时,第二无线终端直接向第一无线终端发送信号以开始直接对等通信。