专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20050083997A1 Multi-user detection in mobile terminal for reducing interference 审中-公开
标题翻译：移动终端多用户检测，减少干扰
公开(公告)号：US20050083997A1
公开(公告)日：2005-04-21
申请号：US10501419
申请日：2002-12-09
申请人： Yonggang Du , Dong Wang
发明人： Yonggang Du , Dong Wang
IPC分类号： H04B1/707 , H04J13/00 , H04Q7/38
CPC分类号： H04B1/7107 , H04J13/0077
摘要： Interference cancellation in a mobile terminal (4) in telecommunication systems like Direct Sequence-Code Division Multiple Access systems or DS-CDMA systems can be improved by providing the mobile terminal (4) with a multi-user detector (41,42,43). These multi-user detectors require the spreading codes of other mobile terminals (2,3,5,6,7,8,9), which spreading codes are available in base stations (1) and thus need to be sent to said mobile terminal (4). By further transmitting power information of other mobile terminals (2,3,5,6,7,8,9) to the mobile terminal (4), a selector (52) can make an intelligent selection in said mobile terminal (4) and select the most important spreading codes thereby reducing the computational complexity. By locating a selector (22) in a base station (1), an intelligent selection can also be made in said base station. Preferably a selection is made per antenna sector and/or in dependence of antenna sectors, in which case direction information of other mobile terminals (2,3,5,6,7,8,9) need to be used.
摘要翻译：可以通过向移动终端（4）提供多用户检测器（41,42,43）来改善诸如直接序列码分多址系统或DS-CDMA系统的电信系统中的移动终端（4）中的干扰消除，。这些多用户检测器需要其他移动终端（2,3,5,6,7,8,9）的扩展码，这些扩展码在基站（1）中可用，因此需要发送到所述移动终端（4）。通过进一步向移动终端（4）发送其他移动终端（2,3,5,6,7,8,9）的功率信息，选择器（52）可以在所述移动终端（4）和选择最重要的扩展码，从而降低计算复杂度。通过将选择器（22）定位在基站（1）中，也可以在所述基站中进行智能选择。优选地，根据天线扇区和/或根据天线扇区进行选择，在这种情况下，需要使用其他移动终端的方向信息（2,3,5,6,7,8,9）。

2. 发明授权

US07801260B2 Peak detection accuracy 有权
标题翻译：峰值检测精度
公开(公告)号：US07801260B2
公开(公告)日：2010-09-21
申请号：US10480114
申请日：2002-06-13
申请人： Yonggang Du , Li Sun
发明人： Yonggang Du , Li Sun
IPC分类号： H04L7/06 , H04L27/06 , H03J3/06
CPC分类号： H04B1/7073 , H04B1/7093 , H04L7/042 , H04L7/06 , H04L7/08
摘要： A time reference point can be determined in a radio system by sending a synchronization sequence s(i), i=0, . . . N−1, from transmitter X, 40 to receiver Y, 48, and by detecting the peak value at the output of a matched-filter, 44, h(i)=s(N−1-i) on Y. In practical systems the accuracy of this peak detection is limited by interference and noise on the radio channel. To increase the peak detection accuracy, we propose to repeat the transmission of the same synchronization sequence K times. The interval L between repetitions is constant and the amplitude of the synchronization sequence in each repetition varies according to a given variation pattern a(jL), j=0, . . . , K−1. The receiver Y, 48 knows L and a(jL), j=0, . . . , K−1. After comparison to a threshold, the matched-filter 44 at the receiver 48 may deliver peaks resulted from repeatedly received synchronization sequences or peaks caused by interference and/or noise.
摘要翻译：通过发送同步序列s（i），i = 0，可以在无线电系统中确定时间参考点。。。 N-1，从发射机X，40到接收机Y，48，以及通过检测匹配滤波器的输出上的峰值，44，h（i）= s（N-1-i）系统的这种峰值检测的准确性受到无线电信道上的干扰和噪声的限制。为了提高峰值检测精度，我们建议重复同步序列K次的传输。重复之间的间隔L是恒定的，并且每个重复中的同步序列的幅度根据给定的变化模式a（jL）j = 0而变化。。。，K-1。接收机Y，48知道L和a（jL），j = 0。。。，K-1。在与阈值进行比较之后，接收器48处的匹配滤波器44可传递由重复接收的同步序列或由干扰和/或噪声引起的峰值所产生的峰值。

3. 发明申请

US20090196163A1 BANDWIDTH ASYMMETRIC COMMUNICATION SYSTEM BASED ON OFDM AND TDMA 审中-公开
标题翻译：基于OFDM和TDMA的带宽不对称通信系统
公开(公告)号：US20090196163A1
公开(公告)日：2009-08-06
申请号：US12306279
申请日：2007-06-21
申请人： Yonggang Du
发明人： Yonggang Du
IPC分类号： H04J11/00 , H04W72/04 , H04L5/02 , H04L27/28
CPC分类号： H04L5/0046 , H04L5/0007 , H04L25/0202 , H04L25/0226 , H04L27/2605 , H04L27/2613 , H04L27/2628 , H04L27/265 , H04L27/2656 , H04L27/2657 , H04L27/2662
摘要： The present invention relates to a communication system comprising a plurality of terminals each having an uplink transmission unit (1) for transmitting radio frequency OFDM signals at a radio frequency and an access point having an uplink receiving unit (4) for concurrently receiving said radio frequency OFDM signals from at least two terminals, said OFDM signals being Orthogonal Frequency Division Multiplex (OFDM) modulated, wherein the bandwidth of said uplink transmission units and of the transmitted radio frequency OFDM signals is smaller than the bandwidth of said uplink receiving unit, that the bandwidth of at least two uplink transmission units and of their transmitted radio frequency OFDM signals is different and that the uplink transmission unit is adapted to assign different connections for concurrently transmitting radio frequency OFDM signals to different sub-carriers in the same time slots or to the same or different sub-carriers in different time slots.
摘要翻译：本发明涉及一种包括多个终端的通信系统，每个终端具有用于以射频发送射频OFDM信号的上行链路传输单元（1）和具有用于同时接收所述射频的上行链路接收单元（4）的接入点来自至少两个终端的OFDM信号，所述OFDM信号是正交频分复用（OFDM）调制的，其中所述上行链路传输单元和发射的射频OFDM信号的带宽小于所述上行链路接收单元的带宽，至少两个上行链路传输单元的带宽及其发射的射频OFDM信号的带宽不同，并且上行链路传输单元适于分配不同的连接，用于将相同时隙中的不同子载波同时发射射频OFDM信号，或不同时隙中的相同或不同的子载波。

4. 发明申请

US20070147285A1 Method and apparatus for transferring non-speech data in voice channel 审中-公开
标题翻译：用于在语音信道中传送非语音数据的方法和装置
公开(公告)号：US20070147285A1
公开(公告)日：2007-06-28
申请号：US10578977
申请日：2004-11-03
申请人： Xiaohui Jin , Yonggang Du
发明人： Xiaohui Jin , Yonggang Du
IPC分类号： H04Q7/00 , H04J1/02
CPC分类号： H04W76/15 , H04W88/02 , H04W88/181
摘要： A method is provided for a mobile terminal to transmit non-speech data in voice channel, comprising: generating a non-speech data frame Tx (transmitting) indication according to the preset non-speech data frame Tx indication generating mode; generating a VAD (voice activity detection) flag about the next frame according to the non-speech data frame Tx indication; transmitting the non-speech data frame during the next frame if the VAD flag indicates that the next frame is non-speech period. With this method, IBD (In-Band Data) information can be transmitted timely, according to different requirements, for example, the urgency of IBD transmission, by selecting IBD data frame Tx indication generating mode.
摘要翻译：提供了一种用于移动终端在语音信道中发送非语音数据的方法，包括：根据预设的非语音数据帧Tx指示生成模式生成非语音数据帧Tx（发送）指示; 根据非语音数据帧Tx指示生成关于下一帧的VAD（语音活动检测）标志; 如果VAD标志指示下一帧是非语音周期，则在下一帧期间发送非语音数据帧。通过这种方法，IBD（带内数据）信息可以根据不同的要求及时传输，例如IBD传输的紧迫性，通过选择IBD数据帧Tx指示生成模式。

5. 发明授权

US06714611B1 Wireless network with user clock synchronization 失效
标题翻译：无线网络与用户时钟同步
公开(公告)号：US06714611B1
公开(公告)日：2004-03-30
申请号：US09527278
申请日：2000-03-17
申请人： Yonggang Du , Matthew P. J. Baker , Edward S. Eilley
发明人： Yonggang Du , Matthew P. J. Baker , Edward S. Eilley
IPC分类号： H04L702
CPC分类号： H04W56/0035 , H04W92/10
摘要： The invention relates to a wireless network which includes a plurality of network nodes, each of which includes a radio device with a respective radio clock supply and is arranged to exchange data via a wireless medium, and also includes a user interface for the exchange of data between the associated radio device and at least one user. At least one user of a network node receives a user clock, being independent of the radio clock, from a user clock supply of the relevant network node. Each network node is arranged to determine, in response to events specified by a central network node, a time value related to the relevant application clock. The central network node transmits at least the last time value formed by a selected network node. Each network node forms the difference between the last two time values determined and synchronizes the frequency of its user clock supply in dependence on the comparison of the difference between its last two time values determined with the difference between the last two time values of the selected network node.
摘要翻译：本发明涉及一种无线网络，其包括多个网络节点，每个网络节点包括具有相应无线电时钟供应的无线电设备，并且被布置为经由无线介质交换数据，并且还包括用于交换数据的用户接口在相关联的无线电设备和至少一个用户之间。网络节点的至少一个用户从相关网络节点的用户时钟供应接收独立于无线电时钟的用户时钟。每个网络节点被布置成响应于由中央网络节点指定的事件来确定与相关应用时钟相关的时间值。中央网络节点至少发送由所选网络节点形成的最后时间值。每个网络节点形成所确定的最后两个时间值之间的差异，并且根据其所选择的网络的最后两个时间值之间的差确定的其最后两个时间值之间的差异的比较来同步其用户时钟供应的频率节点。

6. 发明授权

US06278690B1 Local area network for reconfiguration in the event of line ruptures or node failure 失效
标题翻译：发生线路破裂或节点故障时重新配置的局域网
公开(公告)号：US06278690B1
公开(公告)日：2001-08-21
申请号：US09057651
申请日：1998-04-09
申请人： Christoph Herrmann , Yonggang Du , Klaus P. May
发明人： Christoph Herrmann , Yonggang Du , Klaus P. May
IPC分类号： H04J116
CPC分类号： H04Q11/0478 , H04L12/437 , H04L2012/5612 , H04L2012/5627 , H04L2012/563 , Y10S370/909
摘要： A local area network with a plurality of nodes for transmitting cells in the asynchronous transfer mode over a ring system having two opposite direction rings. In the event of a defect in a transmitting line from a node, or a defect in a neighboring node, a loop is formed in this node to reroute messages from one ring to the other. First, a node detecting a defect transmits a message of a first type to all other involved nodes, identifying the location of the detected defect. This information is entered in a respective status table in each node. After evaluating the information in its status table, a node which should form a loop does so, and sends a message of a second type identifying the loop to any nodes which do not already have this information.
摘要翻译：一种具有多个节点的局域网，用于通过具有两个相反方向环的环系统以异步传输模式传送小区。在来自节点的传输线路中的缺陷或相邻节点的缺陷的情况下，在该节点中形成环路以将消息从一个环路重新路由到另一个环路。首先，检测缺陷的节点向所有其他相关节点发送第一类型的消息，识别检测到的缺陷的位置。该信息被输入到每个节点的相应状态表中。在对其状态表中的信息进行评估之后，应该形成循环的节点执行此操作，并且向没有该信息的任何节点发送标识循环的第二类型的消息。

7. 发明授权

US06198909B1 Communication environment with plurality of radio systems 失效
标题翻译：具有多个无线电系统的通信环境
公开(公告)号：US06198909B1
公开(公告)日：2001-03-06
申请号：US09134108
申请日：1998-08-14
申请人： Yonggang Du
发明人： Yonggang Du
IPC分类号： H04Q720
CPC分类号： H04W16/10 , H04W16/14 , Y02D70/142
摘要： In a communication environment with a number of radio systems a radio station in one of the radio systems seizes a sub-frequency range in a predetermined frequency range. Prior to each transmission of a useful signal, the one radio station checks whether a given sub-frequency range in the predetermined frequency range is free for a selected size of a propagation area. If the given sub-frequency range is free, the radio station transmits at random instants at least two pulses with a transmission range that is substantially restricted to the given sub-frequency range and avoids collisions with another radio system belonging to the communication environment by detecting whether the other radio system has seized the sub-frequency range in an overlapping radio propagation area at the same time. If the given sub-frequency range is free for the selected size of the radio propagation area and no collision with the other radio system is detected, the radio station transmits useful signals restricted to the given sub-frequency range.
摘要翻译：在具有多个无线电系统的通信环境中，其中一个无线电系统中的无线电站占用预定频率范围内的子频率范围。在每个发送有用信号之前，一个无线电台检查预定频率范围内的给定子频率范围是否对于所选择的传播区域的大小是空闲的。如果给定的子频率范围是空闲的，则无线电台以随机时刻发送至少两个具有实质上限于给定子频率范围的传输范围的脉冲，并且通过检测来避免与属于通信环境的另一无线电系统的冲突无线电系统是否同时在重叠的无线电传播区域中占用了子频率范围。如果给定的子频率范围对于所选大小的无线电传播区域是空闲的，并且没有检测到与其他无线电系统的冲突，则无线电台发送限制到给定子频率范围的有用信号。

8. 发明授权

US5640384A Reconfigurable communication network 失效
标题翻译：可重构通信网络
公开(公告)号：US5640384A
公开(公告)日：1997-06-17
申请号：US489471
申请日：1995-06-12
申请人： Yonggang Du
发明人： Yonggang Du
IPC分类号： H04B7/24 , H04L12/28 , H04L12/42 , H04L12/70 , H04Q11/04 , H04W16/18 , H04J3/14 , H04L12/437 , H04Q7/34
CPC分类号： H04W16/18 , H04L12/42 , H04Q11/0478 , H04L2012/5607 , H04L2012/5619 , H04L2012/563
摘要： The application describes a network comprising transceivers (1..6) linked in a network topology. The positions of the transceivers in the network topology are changed in dependence on the loads on the end-to-end connections (VC1..VC5) between the transceivers in the network. A configuration is chosen to give efficient use of the capacity available in the network. Each time that a new end-to-end connection (VC) within the network is set up the positions of the transceivers (1..6) are changed such that the network remains optimized.
摘要翻译：该应用描述了包括以网络拓扑链接的收发器（1..6）的网络。收发器在网络拓扑中的位置根据网络中收发器之间的端到端连接（VC1..VC5）的负载而改变。选择配置以有效利用网络中可用的容量。每当建立网络内的新的端对端连接（VC）时，收发器（1..6）的位置被改变，使得网络保持优化。

9. 发明授权

US5537399A Local network 失效
标题翻译：本地网络
公开(公告)号：US5537399A
公开(公告)日：1996-07-16
申请号：US360904
申请日：1994-12-21
申请人： Yonggang Du
发明人： Yonggang Du
IPC分类号： H04Q3/00 , H04L12/28 , H04L12/70 , H04Q11/04 , H04B7/212
CPC分类号： H04W48/08 , H04Q11/0478 , H04L2012/5607 , H04L2012/5619 , H04W84/12
摘要： A local area network comprises a plurality of network interfaces with each network interface coupled to a station, the network interfaces further for exchanging data with each other. The local area network further comprises a distribution station for exchanging data with the network interfaces. The distribution station further receives load information of the network interfaces, and in response to the load information, transmits a channel distribution for the exchange of data between the network interfaces.
摘要翻译：局域网包括多个网络接口，其中每个网络接口耦合到站，所述网络接口进一步用于彼此交换数据。局域网还包括用于与网络接口交换数据的分发站。分发站还接收网络接口的负载信息，响应于负载信息，在网络接口之间传输数据交换数据。

10. 发明申请

US20090175260A1 METHOD OF COMMUNICATING DATA IN COMMUNICATION SYSTEMS 失效
标题翻译：在通信系统中传播数据的方法
公开(公告)号：US20090175260A1
公开(公告)日：2009-07-09
申请号：US12304126
申请日：2007-06-12
申请人： Xiangyu Wang , Yonggang Du
发明人： Xiangyu Wang , Yonggang Du
IPC分类号： H04J3/06
CPC分类号： H04W56/001 , H04J3/0658
摘要： There is elucidated a method of communicating data packets (210; 520) within a data communication network (10). The network (10) comprises communication nodes (30a, 30b, 30c, 40), wherein a first nodal set (30a, 30b, 30c) comprises nodes which are operable to communicate via a communication medium with a second nodal set (40) comprising at least one of said nodes (30a, 30b, 30c, 40). The method comprises steps of: (a) mutually synchronizing together two or more nodes of said first nodal set; and (b) simultaneously in a synchronized manner transmitting one or more data packets from the mutually synchronized two or more nodes of said first nodal set via said communication medium for substantially simultaneous reception at said second nodal set (40). The network (10) is susceptible to being simpler to implement in comparison to comparable contemporary communication networks, as well as potentially providing a better quality-of-service (QoS) especially when handover from one access point node to another is considered.
摘要翻译：阐述了在数据通信网络（10）内传送数据分组（210; 520）的方法。网络（10）包括通信节点（30a，30b，30c，40），其中第一节点组（30a，30b，30c）包括可操作以经由通信介质与第二节点组（40）通信的节点，所述节点（30a，30b，30c，40）中的至少一个。该方法包括以下步骤：（a）将所述第一节点组的两个或多个节点相互同步; 和（b）同步地以同步的方式经由所述通信介质从所述第一节点组的相互同步的两个或更多个节点发送一个或多个数据分组，用于在所述第二节点集（40）处基本上同时接收。与可比较的当代通信网络相比，网络（10）易于实现，并且潜在地提供更好的服务质量（QoS），特别是当考虑从一个接入点节点到另一个接入点节点的切换时。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式