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1. 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。

2. 发明授权

US07962140B2 Method and system for handover between wireless local area network and wireless wide area network 有权
标题翻译：无线局域网与无线广域网之间切换的方法和系统
公开(公告)号：US07962140B2
公开(公告)日：2011-06-14
申请号：US10571815
申请日：2004-08-19
申请人： Lei Feng , Xiaoling Shao , Xiaohui Jin , Yonggang Du , Bo Liu , Xiaolu Sun
发明人： Lei Feng , Xiaoling Shao , Xiaohui Jin , Yonggang Du , Bo Liu , Xiaolu Sun
IPC分类号： H04W36/00 , H04W4/00 , H04M1/00
CPC分类号： H04W36/0016 , H04L51/00 , H04L51/04 , H04W36/14
摘要： A method to be performed by a user terminal with WWAN and WLAN interfaces, comprising steps of: communicating via the WWAN interface; inspecting whether its WLAN interface is available; entering into a WWAN-to WLAN state from a WWAN active state if its WLAN interface is available; said user terminal provides a public server with known network address with its presence information said WWAN-to-WLAN state; and acquiring the network address of another user terminal communicating with said user terminal from said server, sending a WLAN call request to said another user terminal by using said address; entering into WLAN active state after receiving the message for accepting the WLAN call request from said another user terminal.
摘要翻译：一种由具有WWAN和WLAN接口的用户终端执行的方法，包括以下步骤：经由WWAN接口进行通信; 检查其WLAN接口是否可用; 如果WLAN接口可用，则从WWAN活动状态进入WWAN到WLAN状态; 所述用户终端向其提供已知网络地址的公共服务器，其存在信息表示WWAN至WLAN状态; 以及从所述服务器获取与所述用户终端通信的另一用户终端的网络地址，通过使用所述地址向所述另一用户终端发送WLAN呼叫请求; 在接收到来自所述另一个用户终端的WLAN呼叫请求的消息之后进入WLAN活动状态。

3. 发明申请

US20100220697A1 METHOD AND APPARATUS FOR MULTI-MODE CONVERSATIONS IN WIRELESS NETWORKS 审中-公开
标题翻译：无线网络中多模式对话的方法与装置
公开(公告)号：US20100220697A1
公开(公告)日：2010-09-02
申请号：US11993666
申请日：2006-06-29
申请人： Bo Liu , Xiaohui Jin , Xiaoling Shao , Rob Davies , Yonggang Du
发明人： Bo Liu , Xiaohui Jin , Xiaoling Shao , Rob Davies , Yonggang Du
IPC分类号： H04W4/00
CPC分类号： H04W64/003 , H04M1/2535 , H04W8/08 , H04W60/04 , H04W84/12 , H04W88/06
摘要： The present invention proposes a method for performing multi-mode conversations for mobile terminals, comprising the steps of: 1)detecting whether there is Wireless Local Area Network (WLAN) available nearby; 2)accessing a network device for correlative location information of another mobile terminal which it intends to communicate with when there is a WLAN available; 3)establishing communication with said another mobile terminal by using said correlative location information via said WLAN after receiving said correlative location information of said another mobile terminal sent back by said network device; and 4)accessing said network device to request updating correlative location information of said mobile terminal when said correlative location information of said mobile terminal changes.
摘要翻译：本发明提出了一种用于对移动终端进行多模对话的方法，包括步骤：1）检测是否存在附近可用的无线局域网（WLAN）; 2）访问网络设备以获得当有WLAN可用时打算与其通信的另一移动终端的相关位置信息; 3）在接收到由所述网络设备发回的所述另一个移动终端的所述相关位置信息之后，经由所述WLAN利用所述相关位置信息建立与所述另一移动终端的通信; 以及4）当所述移动终端的所述相关位置信息改变时，访问所述网络设备以请求更新所述移动终端的相关位置信息。

4. 发明申请

US20070147327A1 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：US20070147327A1
公开(公告)日：2007-06-28
申请号：US10579024
申请日：2004-11-05
申请人： Xiaohui Jin , Bo Liu , Xiaoling Shao , Lei Feng , Yonggang Du
发明人： Xiaohui Jin , Bo Liu , Xiaoling Shao , Lei Feng , Yonggang Du
IPC分类号： H04B7/216 , H04J1/02
CPC分类号： H04W76/20 , H04W76/15
摘要： A method is proposed for a mobile terminal in mobile communication systems to transfer non-speech data in voice channel, comprising steps of: encapsulating the non-speech data to be sent to another mobile terminal into IBD frames; storing said IBD frames in a buffer; detecting whether a speech burst sent to said another mobile terminal is over; checking whether there is non-speech data to be sent to said another mobile terminal if detecting that said speech burst is over; sending at least one non-speech data to said another mobile terminal via voice channel if there is non-speech data to be sent. By modifying the SID frame and silence speech frame, this method realizes transmission of non-speech via voice channel rather than via dedicated data channel, so as to save radio resources of the system.
摘要翻译：提出一种用于移动通信系统中的移动终端在语音信道中传送非语音数据的方法，包括以下步骤：将要发送到另一个移动终端的非语音数据封装成IBD帧; 将所述IBD帧存储在缓冲器中; 检测发送到所述另一个移动终端的语音突发是否结束; 如果检测到所述语音突发结束，则检查是否存在要发送到所述另一个移动终端的非语音数据; 如果存在要发送的非语音数据，则通过语音信道向所述另一移动终端发送至少一个非语音数据。通过修改SID帧和静音语音帧，该方法通过语音信道而不是经由专用数据信道实现非语音传输，从而节省系统的无线资源。

5. 发明申请

US20070082671A1 Method and system for handover between wireless local area network and wireless wide area network 有权
标题翻译：无线局域网与无线广域网之间切换的方法和系统
公开(公告)号：US20070082671A1
公开(公告)日：2007-04-12
申请号：US10571815
申请日：2004-08-19
申请人： Lei Feng , Xiaoling Shao , Xiaohui Jin , Yonggang Du , Bo Liu , Xiaolu Sun
发明人： Lei Feng , Xiaoling Shao , Xiaohui Jin , Yonggang Du , Bo Liu , Xiaolu Sun
IPC分类号： H04Q7/20
CPC分类号： H04W36/0016 , H04L51/00 , H04L51/04 , H04W36/14
摘要： A method to be performed by a user terminal with WWAN and WLAN interfaces, comprising steps of: communicating via the WWAN interface; inspecting whether its WLAN interface is available; entering into a WWAN-to WLAN state from a WWAN active state if its WLAN interface is available; said user terminal provides a public server with known network address with its presence information said WWAN-to-WLAN state; and acquiring the network address of another user terminal communicating with said user terminal from said server, sending a WLAN call request to said another user terminal by using said address; entering into WLAN active state after receiving the message for accepting the WLAN call request from said another user terminal.
摘要翻译：一种由具有WWAN和WLAN接口的用户终端执行的方法，包括以下步骤：经由WWAN接口进行通信; 检查其WLAN接口是否可用; 如果WLAN接口可用，则从WWAN活动状态进入WWAN到WLAN状态; 所述用户终端向其提供已知网络地址的公共服务器，其存在信息表示WWAN至WLAN状态; 以及从所述服务器获取与所述用户终端通信的另一用户终端的网络地址，通过使用所述地址向所述另一用户终端发送WLAN呼叫请求; 在接收到来自所述另一个用户终端的WLAN呼叫请求的消息之后进入WLAN活动状态。

6. 发明授权

US08432868B2 Systems and methods for seamlessly roaming between a wireless wide area network and a wireless local area network 有权
标题翻译：在无线广域网和无线局域网之间无缝漫游的系统和方法
公开(公告)号：US08432868B2
公开(公告)日：2013-04-30
申请号：US10555676
申请日：2004-05-06
申请人： Lei Feng , Xiaoling Shao , Jiawen Tu , Yonggang Du , Bo Liu , Xiaohui Jin , Jianbo Tian , Xiaolu Sun
发明人： Lei Feng , Xiaoling Shao , Jiawen Tu , Yonggang Du , Bo Liu , Xiaohui Jin , Jianbo Tian , Xiaolu Sun
IPC分类号： H04W4/00
CPC分类号： H04W36/18 , H04L65/1069 , H04W8/26 , H04W36/14 , H04W72/048 , H04W76/10 , H04W80/04 , H04W84/04 , H04W84/12 , H04W88/06
摘要： The present invention takes the advantage of the WLAN resources in hotspots for voice and data connections and enables seamless handover between WWAN and WLAN and vice versa. This allows two users in the hotspots to communicate with each other by making a voice over IP (VoIP) or video call, thus achieving cost savings for the end users and WWAN resources savings for the wireless operators. According to one embodiment of the invention, a mobile terminal has wireless wide area network (WWAN) and wireless local area network (WLAN) interfaces. The mobile terminal via a WWAN. If a WLAN is present, the mobile terminal sends a handover request together with its network address to the called mobile terminal, using a short message service (SMS) technique or a watermarking technique, for initiating a WLAN call with the called mobile terminal via a WLAN. After the WLAN call is established with the called mobile terminal, the mobile terminal releases the WWAN call.
摘要翻译：本发明利用WLAN资源在热点中进行语音和数据连接，并实现WWAN与WLAN之间的无缝切换，反之亦然。这允许热点中的两个用户通过IP（VoIP）或视频呼叫进行通信，从而为终端用户节省成本，并为无线运营商节省WWAN资源。根据本发明的一个实施例，移动终端具有无线广域网（WWAN）和无线局域网（WLAN）接口。移动终端通过WWAN。如果存在WLAN，则移动终端使用短消息服务（SMS）技术或水印技术将与其网络地址一起的切换请求发送到被叫移动终端，以通过经由呼叫的移动终端发起WLAN呼叫 WLAN。在与被叫移动终端建立WLAN呼叫之后，移动终端释放WWAN呼叫。

7. 发明授权

US08325672B2 Method and system for seamless handover between WLAN and WWAN 有权
标题翻译： WLAN与WWAN无缝切换的方法和系统
公开(公告)号：US08325672B2
公开(公告)日：2012-12-04
申请号：US10578932
申请日：2004-11-03
申请人： Yonggang Du , Xiaoling Shao , Xiaohui Jin , Lei Feng , Bo Liu
发明人： Yonggang Du , Xiaoling Shao , Xiaohui Jin , Lei Feng , Bo Liu
IPC分类号： H04W4/00
CPC分类号： H04W36/0011 , H04W8/26 , H04W60/00 , H04W84/04 , H04W84/12
摘要： A communication method for a mobile terminal to perform seamless handover between a WWAN and a WLAN. The method comprises receiving a registration message sent by the mobile terminal when it enters the WLAN, wherein the registration message at least contains a WLAN address that the mobile terminal acquires when entering the WLAN; establishing the mapping relationship between the WWAN address and the WLAN address of the mobile terminal according to the registration message; encapsulating the WLAN address into the data information to be sent to the mobile terminal according to the mapping relationship when receiving the data information to be sent to the mobile terminal from a source address; and sending the data information containing the WLAN address to the mobile terminal via the WLAN.
摘要翻译：一种用于移动终端在WWAN和WLAN之间执行无缝切换的通信方法。该方法包括：当移动终端进入WLAN时，接收由移动终端发送的注册消息，其中注册消息至少包含移动终端在进入WLAN时获取的WLAN地址; 根据注册消息建立移动终端的WWAN地址和WLAN地址之间的映射关系; 在从源地址接收要发送到移动终端的数据信息时，根据映射关系将WLAN地址封装成要发送到移动终端的数据信息; 并通过WLAN将包含WLAN地址的数据信息发送到移动终端。

8. 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。

9. 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。

10. 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。

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