公开(公告)号：US07697523B2

公开(公告)日：2010-04-13

申请号：US09970487

申请日：2001-10-03

申请人： Nikolai K. N. Leung ,  Nileshkumar J. Parekh ,  Raymond T. Hsu

发明人： Nikolai K. N. Leung ,  Nileshkumar J. Parekh ,  Raymond T. Hsu

IPC分类号： H04L12/28

CPC分类号： H04W76/002 ,  H04L12/1886 ,  H04L12/189 ,  H04L12/4633 ,  H04L45/16 ,  H04L47/10 ,  H04L47/14 ,  H04L47/15 ,  H04L47/70 ,  H04L47/806 ,  H04L47/824 ,  H04L47/825 ,  H04L2212/00 ,  H04W4/06 ,  H04W76/40 ,  H04W80/00

摘要： Method and apparatus for data packet transport in a wireless transmission system supporting broadcast transmissions. A multicast tree is built between nodes through neighboring routers. The multicast tree forms a tunnel through which the broadcast content is transmitted. The broadcast message is encapsulated in an Internet Protocol packet for transmission through the multicast tree. At least one multicast tree is formed between the Internet portion of the system and the wireless portion of the system, such as the Access Network. In one embodiment, an external multicast tree is formed between a content source and a packet data service node, and an internal multicast tree is formed between the packet data service node and a packet control function node.

摘要翻译： 支持广播传输的无线传输系统中的数据分组传输的方法和装置。 通过相邻路由器在节点之间建立多播树。 组播树形成广播内容通过该隧道传输的隧道。 广播消息被封装在因特网协议分组中，以通过多播树进行传输。 在系统的因特网部分和诸如接入网络的系统的无线部分之间形成至少一个多播树。 在一个实施例中，在内容源和分组数据服务节点之间形成外部多播树，并且在分组数据服务节点和分组控制功能节点之间形成内部多播树。

公开(公告)号：US07593408B2

公开(公告)日：2009-09-22

申请号：US11406741

申请日：2006-04-18

申请人： Ramin Rezaiifar ,  Nikolai K. N. Leung

发明人： Ramin Rezaiifar ,  Nikolai K. N. Leung

IPC分类号： H04L12/56

CPC分类号： H04L47/10 ,  H04L1/1841 ,  H04L47/14 ,  H04L47/17 ,  H04L47/34

摘要： A method and apparatus for resolving ambiguity in reception of multiple retransmitted frames includes ascertaining for each data frame received from a transmitter whether the frame is a retransmitted frame. If the frame is a retransmitted frame, the frame may be stored in a resequencing buffer. If an abort timer associated with the second round of retransmission has been set for the retransmitted frame, an associated negative-acknowledgment-list (NAK-list) entry is not removed from a NAK list until the abort timer has expired. If the abort timer has not been set for the retransmitted frame, the associated NAK-list entry is removed from the NAK list. The method and apparatus may reside in a transport function in which a transmitter sends data frames to a receiver in accordance with the Radio Link Protocol interface. The transport function may reside in, e.g., a data-capable cellular or satellite-based base station and subscriber unit.

公开(公告)号：US07212810B2

公开(公告)日：2007-05-01

申请号：US10816314

申请日：2004-04-01

申请人： Uppinder Babbar ,  Nikolai K. N. Leung ,  Marcello Lioy ,  Siva Veerepalli ,  Anup Kuzhiyil ,  James J. Willkie ,  Jeffrey A. Dyck

发明人： Uppinder Babbar ,  Nikolai K. N. Leung ,  Marcello Lioy ,  Siva Veerepalli ,  Anup Kuzhiyil ,  James J. Willkie ,  Jeffrey A. Dyck

IPC分类号： H04Q7/22 ,  H04Q7/20 ,  H04M3/42

CPC分类号： H04W88/06 ,  H04W8/18 ,  H04W48/17

摘要： Techniques for performing system selection based on a usage model that uses “access strings”, “profiles”, and “activation strings” are described. Access strings are defined for wireless data services and provide a highly intuitive user interface. Each access string is associated with one or more profiles. Each profile includes various parameters needed to establish a specific data call. Each profile is further associated with an activation string that contains connection information for the data call. System selection is performed in two parts. In the first part, a wireless user views access strings for available data services, selects the access string for the desired data service, and returns the selected access string. In the second part, the wireless device selects a profile for a system most suited to provide the desired data service, from among all profiles associated with the selected access string.

摘要翻译： 描述了基于使用“访问字符串”，“简档”和“激活字符串”的使用模型执行系统选择的技术。 访问字符串被定义为无线数据服务，并提供高度直观的用户界面。 每个访问字符串与一个或多个配置文件相关联。 每个配置文件包括建立特定数据呼叫所需的各种参数。 每个配置文件进一步与包含数据呼叫的连接信息的激活串相关联。 系统选择分两部分进行。 在第一部分中，无线用户查看可用数据服务的访问字符串，选择所需数据服务的访问字符串，并返回所选择的访问字符串。 在第二部分中，无线设备从与所选择的访问串相关联的所有简档中选择最适合于提供期望数据服务的系统的简档。

公开(公告)号：US06819454B2

公开(公告)日：2004-11-16

申请号：US09900250

申请日：2001-07-06

申请人： Nikolai K. N. Leung

发明人： Nikolai K. N. Leung

IPC分类号： H04N100

CPC分类号： H04N1/32797 ,  H04N1/00281 ,  H04N2201/0015 ,  H04N2201/3335 ,  H04N2201/33364 ,  H04W88/181

摘要： Apparatus and methods for supporting analog fax calls between two wireless subscriber stations in a tandem configuration are presented herein. To support the tandem configuration, full duplex communication may be established between the two base stations. Full duplex communication may be realized by incorporating an echo canceler in the base station, or by utilizing both BFSK channels of the V.21 fax system for communication. The tandem configuration may also be supported by advanced flag synchronization, wherein a second base station will immediately start sending preamble flags to a first base station after a message is transmitted from the first base station to the second base station. The first base station may then synchronize its receiver for immediate receipt of the return message from the second base station.

摘要翻译： 本文介绍了用于在串联配置中的两个无线用户站之间支持模拟传真呼叫的装置和方法。 为了支持串联配置，可以在两个基站之间建立全双工通信。 全双工通信可以通过在基站中并入回波消除器，或者通过利用V.21传真系统的两个BFSK信道进行通信来实现。 串联配置还可以由高级标志同步来支持，其中在从第一基站向第二基站发送消息之后，第二基站将立即开始向第一基站发送前导码标志。 然后，第一基站可以同步其接收机，以便立即从第二基站收到返回消息。

公开(公告)号：US06529527B1

公开(公告)日：2003-03-04

申请号：US09612075

申请日：2000-07-07

申请人： Tao Chen ,  Nikolai K. N. Leung ,  Raymond Tah-Sheng Hsu

发明人： Tao Chen ,  Nikolai K. N. Leung ,  Raymond Tah-Sheng Hsu

IPC分类号： H04J306

CPC分类号： H04W28/06 ,  H04L1/18

摘要： A method and apparatus for reducing transmission delay in a wireless communication system that carries packetized voice and data information. Interruptions in the traffic channels cause loss of synchronization between a header compressor and a header decompressor. Rather than transmitting resynchronization information on the traffic channel, the information dropped by an interruption is re-transmitted on a non-traffic channel in parallel with the traffic channel. At the remote station, information from the traffic channel and the non-traffic channel is reassembled before input into the decompressor. Alternatively, the non-traffic channel can be used to carry overflow information so that a higher average data rate can be achieved than the average data rate of the traffic channel alone.

摘要翻译： 一种在携带分组语音和数据信息的无线通信系统中减少传输延迟的方法和装置。 业务信道中的中断导致报头压缩器和报头解压缩器之间的同步丢失。 不是在业务信道上发送再同步信息，而是在与业务信道并行的非业务信道上重新发送由中断丢弃的信息。 在远程站处，在输入到解压缩器之前重新组合来自业务信道和非业务信道的信息。 或者，非业务信道可以用于承载溢出信息，使得可以实现比单独的业务信道的平均数据速率更高的平均数据速率。

公开(公告)号：US06487179B1

公开(公告)日：2002-11-26

申请号：US09677499

申请日：2000-10-02

申请人： Nikolai K. N. Leung

发明人： Nikolai K. N. Leung

IPC分类号： H04B320

CPC分类号： H04N1/32619 ,  H04B7/015 ,  H04L1/1887 ,  H04N1/00281 ,  H04N1/32614 ,  H04N1/32641 ,  H04N1/32646 ,  H04N1/32683 ,  H04N1/327 ,  H04N2201/0015 ,  H04W24/00 ,  H04W74/0816 ,  H04W74/0825

摘要： In a half-duplex communication system in which additional delays in the communication channel may cause a message collision between a message and a response, a collision detector is utilized to prevent and detect message collisions. The collision detector determines if a response may be transmitted from the communication device while it is receiving the current message. If no response is expected, the collision detector is placed into a train mode. If a response is possible, the collision detector is placed into the monitor mode. In the monitor mode, the collision detector monitors the communication channel and determines if a message collision has occurred during transmission of the message. A detection of a message collision causes retransmission of the message or possibly a new message at a later time after it has been determined that the communication channel is clear.

摘要翻译： 在通信信道中的附加延迟可能导致消息与响应之间的消息冲突的半双工通信系统中，利用冲突检测器来防止和检测消息冲突。 冲突检测器确定在接收当前消息时是否可以从通信设备发送响应。 如果没有预期的响应，则将碰撞检测器置于列车模式。 如果可以进行响应，则将碰撞检测器置于监视模式。 在监视模式中，碰撞检测器监视通信信道，并确定消息传输过程中是否发生了消息冲突。 在确定通信信道清楚之后，消息冲突的检测在稍后的时间引起消息的重传或可能的新消息。

公开(公告)号：US06374122B1

公开(公告)日：2002-04-16

申请号：US09076340

申请日：1998-05-11

申请人： Nikolai K. N. Leung

发明人： Nikolai K. N. Leung

IPC分类号： H04B07204

CPC分类号： H04W8/22 ,  H04W12/06

摘要： A 32 bit digital “amended electronic serial number” (AESN) is generated from a 56 bit “extended electronic serial number” (EESN). The AESN distinguishes each subscriber unit within a wireless system from each other subscriber unit. Two distinct methods are disclosed. In the first method, a manufacturers code field (“MFR”) is tested to determine whether the subscriber unit has been assigned an EESN. If so, then the least significant 8 bits of the manufacturer's code field (“EMFR”) are appended to the “serial number” field (“SN”). In the second method, each manufacturer generates serial numbers by applying a pseudo-random sequence. The “seed” for the pseudo-random sequence is based on the manufacturer's EMFR. This serial number is then combined with the 8 bit MFR.

摘要翻译： 从56位“扩展电子序列号”（EESN）生成32位数字“修改电子序列号”（AESN）。 AESN将无线系统中的每个用户单元与每个其他用户单元区分开。 公开了两种不同的方法。 在第一种方法中，测试制造商代码字段（“MFR”）以确定用户单元是否已被分配了EESN。 如果是这样，则制造商代码字段（“EMFR”）的最低有效8位被附加到“序列号”字段（“SN”）。 在第二种方法中，每个制造商通过应用伪随机序列产生序列号。 伪随机序列的“种子”是基于制造商的EMFR。 然后将该序列号与8位MFR组合。

公开(公告)号：US06281988B1

公开(公告)日：2001-08-28

申请号：US09629121

申请日：2000-07-31

申请人： Nikolai K. N. Leung

发明人： Nikolai K. N. Leung

IPC分类号： H04N100

CPC分类号： H04N1/32797 ,  H04N1/00281 ,  H04N2201/0015 ,  H04N2201/3335 ,  H04N2201/33364 ,  H04W88/181

摘要： The present invention provides an apparatus and method for supporting analog fax calls between two wireless subscriber stations in a tandem configuration. The existence of a tandem configuration is detected, and a more efficient communication protocol is established between two base stations upon detection of the tandem configuration. A message generator in a first base station generates an identification message. If the identification message is received by a second base station, the second base station will be informed that the tandem configuration exists. A message generator in a second base station may then generate a return message, which when received by the first base station, will notify the first base station of the existence of the tandem configuration. To support the tandem configuration, full duplex communication may be established between the two base stations. Full duplex communication may be realized by incorporating an echo canceler in the base station, or by utilizing both BFSK channels of the V.21 fax system for communication. The tandem configuration may also be supported by advanced flag synchronization. Thus, after a message is transmitted from a first base station to a second base station, the second base station will immediately start sending preamble flags to the first base station. The first base station may then synchronize its receiver for immediate receipt of the return message from the second base station.

摘要翻译： 本发明提供一种用于在串联配置中的两个无线用户站之间支持模拟传真呼叫的装置和方法。 检测到串联配置的存在，并且在检测到串联配置之后，在两个基站之间建立更有效的通信协议。 第一基站中的消息发生器产生识别消息。 如果识别消息由第二基站接收到，则将通知第二基站串联配置。 然后，第二基站中的消息发生器可以生成返回消息，当第一基站接收到该消息时将向第一基站通知串联配置的存在。 为了支持串联配置，可以在两个基站之间建立全双工通信。 全双工通信可以通过在基站中并入回波消除器，或者通过利用V.21传真系统的两个BFSK信道进行通信来实现。 串行配置也可以通过高级标志同步来支持。 因此，在从第一基站发送到第二基站的消息之后，第二基站将立即开始向第一基站发送前导码标志。 然后，第一基站可以同步其接收机，以便立即从第二基站收到返回消息。

公开(公告)号：US6075847A

公开(公告)日：2000-06-13

申请号：US247881

申请日：1999-02-10

申请人： Nikolai K. N. Leung

发明人： Nikolai K. N. Leung

IPC分类号： H04N1/32 ,  H04M11/00 ,  H04N1/327

CPC分类号： H04N1/32708 ,  H04N1/32704 ,  H04N1/32719 ,  H04N1/32721

摘要： A method and system for detecting fax calls in a network that alternatively operates in either a voice mode or a fax mode. A detection threshold is first initialized, a first detector detects whether a calling tone has been transmitted from a calling fax machine to a called fax machine, and a second detector detects whether an identification tone has been sent from the called fax machine to the calling fax machine. If the calling tone has been transmitted from the calling fax machine to the called fax machine the detection threshold is decremented a first amount, if the identification tone has been transmitted from the called fax machine to the calling fax machine the detection threshold is decremented a second amount, and if both the calling tone and the identification tone have been sent the detection threshold is decremented a third amount. A flag measure is generated by monitoring, with a third detector, signals sent from the called fax machine. The flag measure is representative of the number of information flags detected by the third detector. The flag measure is compared to the detection threshold and, if the flag measure exceeds the detection threshold, a fax call is detected. The detection of the fax call may then be used to switch a network from voice mode to fax mode. The vocoder used in the voice mode is temporarily muted when the detection threshold is first exceeded in order to confirm the existence of the fax call before switching from voice mode to fax mode.

摘要翻译： 一种在网络中检测传真呼叫的方法和系统，其可以以语音模式或传真模式操作。 检测阈值首先被初始化，第一检测器检测呼叫音是否已经从呼叫传真机发送到被叫传真机，而第二检测器检测是否已经从被叫传真机发送识别音到主叫传真 机。 如果已经从主叫传真机向被叫传真机传送呼叫音，则检测阈值递减第一量，如果已经从被叫传真机向主叫传真机发送了识别音，则检测阈值递减一秒 量，并且如果呼叫音和识别音都已经被发送，则检测阈值递减第三量。 通过使用第三检测器监视从被叫传真机发送的信号来生成标志测量。 标志测量表示由第三检测器检测的信息标志的数量。 将标志测量与检测阈值进行比较，如果标志测量超过检测阈值，则检测到传真呼叫。 然后可以使用传真呼叫的检测来将网络从语音模式切换到传真模式。 当首先超过检测阈值时，在语音模式下使用的声码器暂时被静音，以便在从语音模式切换到传真模式之前确认传真呼叫的存在。