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1.发明授权Digital wireless telephone system interface for analog telecommunications equipment 失效用于模拟电信设备的数字无线电话系统接口
公开(公告)号：US5864763A
公开(公告)日：1999-01-26
申请号：US719112
申请日：1996-09-24
摘要： A novel and improved method and apparatus for providing an interface to a digital wireless telephone system compatible with standard analog wire line telephones, analog wire line fax machines, and computer modems is described. At the start of a telephone call, a data pump interprets the digits dialed, and if a first set of digits are received a control system configures the data pump for processing analog fax data. If a second set of digits are received, the control system configures the data pump for processing analog computer modem data. If a telephone number is received, the control system configures the interface system to pass additional data to a vocoder which encodes any digitized audio information received.
摘要翻译： 描述了一种用于提供与标准模拟有线电话，模拟有线线路传真机和计算机调制解调器兼容的数字无线电话系统的接口的新颖和改进的方法和装置。 在电话开始时，数据泵解释拨打的数字，如果接收到第一组数字，则控制系统配置数据泵以处理模拟传真数据。 如果接收到第二组数字，则控制系统配置用于处理模拟计算机调制解调器数据的数据泵。 如果接收到电话号码，则控制系统配置接口系统以将附加数据传送到编码所接收的任何数字化音频信息的声码器。
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公开(公告)号：US06700676B1
公开(公告)日：2004-03-02
申请号：US09460872
申请日：1999-12-13
IPC分类号： G06F1300
CPC分类号： H04N1/00095
摘要： A novel and improved method and apparatus for providing an interface to a digital wireless telephone system compatible with standard analog wire line fax machines is described. To process a fax, a source interface waits until an interface to a destination fax machine has been established before establishing an interface to a source fax machine. The source fax transmission rate must be less than or equal to the destination fax transmission rate and the data rate of the digital channel. To establish the source fax interface at the proper rate, the source interface first selects and initial data rate from a set of standard fax transmission rates. The source interface sends unacceptable rate (failure to train) messages to the source fax machine until the source fax transmission rate is less than or equal to the data channel rate and the destination fax transmission rate. During fax processing, the destination interface inserts non-printing data (fill bits) if the destination fax transmission rate is greater than the source fax transmission rate. Fill bits are also inserted to compensate for transmission delays.
摘要翻译： 描述了一种用于向与标准模拟有线线路传真机兼容的数字无线电话系统提供接口的新颖和改进的方法和装置。 要处理传真，源接口将在建立到源传真机的接口之前等待直到目标传真机的接口建立。 源传真传输速率必须小于或等于目的传真传输速率和数字频道的数据速率。 要以适当的速率建立源传真接口，源接口首先从一组标准传真传输速率中选择和初始化数据速率。 源接口发送不可接受的速率（无法训练）消息到源传真机，直到源传真传输速率小于或等于数据信道速率和目的传真传输速率。 在传真处理过程中，如果目标传真传输速率大于源传真传输速率，则目标接口插入非打印数据（填充位）。 还插入填充位以补偿传输延迟。
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3.发明授权Method and apparatus for preventing message collisions in a half-duplex communication system 失效用于防止半双工通信系统中的消息冲突的方法和装置
公开(公告)号：US6147978A
公开(公告)日：2000-11-14
申请号：US780764
申请日：1997-01-08
IPC分类号： H04N1/32 , H04L1/16 , H04L1/18 , H04L5/16 , H04L29/02 , H04N1/00 , G06F11/00 , H04B7/14 , H04J3/16
CPC分类号： H04L1/1874 , H04L1/1803 , H04L1/188 , H04L5/16 , H04N1/00281 , H04N1/32795 , H04L1/1657 , H04N2201/0015 , H04N2201/0034
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 timer based collision prevention circuit is utilized to prevent the message collision. The collision prevention circuit determines if the message transmitted by a communication device will be repeated. If the message is to be repeated, the collision prevention circuit sets a countdown collision timer to a predetermined period of time shorter than the shortest repetition interval of the repeated message. A response is only sent to the communication device if the collision timer has not expired. If the timer expires, the collision prevention circuit waits for the message to be retransmitted by the source device before sending the response to the communication device.
摘要翻译： 在通信信道中的附加延迟可能导致消息和响应之间的消息冲突的半双工通信系统中，使用基于定时器的防冲突电路来防止消息冲突。 防撞电路确定是否重复由通信装置发送的消息。 如果要重复消息，则防撞电路将倒计时冲突定时器设置为比重复消息的最短重复间隔短的预定时间段。 如果碰撞定时器尚未过期，则只将响应发送到通信设备。 如果定时器到期，则在将响应发送到通信设备之前，防止冲突电路等待源设备重传该消息。
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公开(公告)号：US6038037A
公开(公告)日：2000-03-14
申请号：US766639
申请日：1996-12-13
CPC分类号： H04N1/00095
摘要： A novel and improved method and apparatus for providing an interface to a digital wireless telephone system compatible with standard analog wire line fax machines is described. To process a fax, a source interface waits until an interface to a destination fax machine has been established before establishing an interface to a source fax machine. The source fax transmission rate must be less than or equal to the destination fax transmission rate and the data rate of the digital channel. To establish the source fax interface at the proper rate, the source interface first selects and initial data rate from a set of standard fax transmission rates. The source interface sends unacceptable rate (failure to train) messages to the source fax machine until the source fax transmission rate is less than or equal to the data channel rate and the destination fax transmission rate. During fax processing, the destination interface inserts non-printing data (fill bits) if the destination fax transmission rate is greater than the source fax transmission rate. Fill bits are also inserted to compensate for transmission delays.
摘要翻译： 描述了一种用于向与标准模拟有线线路传真机兼容的数字无线电话系统提供接口的新颖和改进的方法和装置。 要处理传真，源接口将在建立到源传真机的接口之前等待直到目标传真机的接口建立。 源传真传输速率必须小于或等于目的传真传输速率和数字频道的数据速率。 要以适当的速率建立源传真接口，源接口首先从一组标准传真传输速率中选择和初始化数据速率。 源接口发送不可接受的速率（无法训练）消息到源传真机，直到源传真传输速率小于或等于数据信道速率和目的传真传输速率。 在传真处理过程中，如果目标传真传输速率大于源传真传输速率，则目标接口插入非打印数据（填充位）。 还插入填充位以补偿传输延迟。
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5.发明授权公开(公告)号：US08989075B2
公开(公告)日：2015-03-24
申请号：US13494739
申请日：2012-06-12
申请人： Ragulan Sinnarajah , Jun Wang , Nikolai K. N. Leung , Tao Chen
发明人： Ragulan Sinnarajah , Jun Wang , Nikolai K. N. Leung , Tao Chen
CPC分类号： H04W4/06 , H04W72/005
摘要： Method and a system for multicast service notification in cellular telephone system to enable the cellular telephone systems to provide both multicast and point-to-point services are disclosed. Several embodiments describe the signaling interaction between an access network and subscriber stations belonging to a multicast group to allow the access network to properly notify the subscriber stations of a the multicast service. Such a signaling further allows the subscriber stations to recognize the multicast service notification to participate in the multicast service.
摘要翻译： 公开了蜂窝电话系统中的多播服务通知的方法和系统，以使蜂窝电话系统能够提供组播和点到点服务。 几个实施例描述了属于多播组的接入网络和用户站之间的信令交互，以允许接入网络正确地通知多播服务的订户站。 这样的信令进一步允许用户站识别多播服务通知以参与组播服务。
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公开(公告)号：US08526394B2
公开(公告)日：2013-09-03
申请号：US11514638
申请日：2006-08-31
申请人： Nikolai K. N. Leung
发明人： Nikolai K. N. Leung
IPC分类号： H04Q7/00
CPC分类号： H04W72/005 , H04W56/00
摘要： A method and system for a handoff in a broadcast communication system is disclosed. A subscriber-assisted handoff is impractical in a broadcast communication system due to e.g., a high signaling load, a difficulty to synchronize the broadcast transmission. On the other hand, the small number of broadcast channels enables the subscriber station to perform the handoff autonomously. While performing a handoff between broadcast transmissions, a disruption of service occurs due to lack of synchronization among the broadcast transmissions. To reduce the service disruption, upon detecting a need for handoff, the lower layers inform the application layer about the forthcoming handoff. The application layer thus may take measures to reduce or prevent the disruption.
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7.发明授权公开(公告)号：US08243644B2
公开(公告)日：2012-08-14
申请号：US11097594
申请日：2005-04-01
申请人： Ragulan Sinnarajah , Jun Wang , Nikolai K. N. Leung , Tao Chen
发明人： Ragulan Sinnarajah , Jun Wang , Nikolai K. N. Leung , Tao Chen
IPC分类号： H04H20/71
CPC分类号： H04W4/06 , H04W72/005
摘要： Method and a system for multicast service notification in cellular telephone system to enable the cellular telephone systems to provide both multicast and point-to-point services are disclosed. Several embodiments describe the signaling interaction between an access network and subscriber stations belonging to a multicast group to allow the access network to properly notify the subscriber stations of a the multicast service. Such a signaling further allows the subscriber stations to recognize the multicast service notification to participate in the multicast service.
摘要翻译： 公开了蜂窝电话系统中的多播服务通知的方法和系统，以使蜂窝电话系统能够提供组播和点到点服务。 几个实施例描述了属于多播组的接入网络和用户站之间的信令交互，以允许接入网络正确地通知多播服务的订户站。 这样的信令进一步允许用户站识别多播服务通知以参与组播服务。
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公开(公告)号：US07502385B2
公开(公告)日：2009-03-10
申请号：US11075589
申请日：2005-03-08
IPC分类号： H04J3/22
CPC分类号： H04L1/1851 , H04L1/1812 , H04L1/1848 , H04L1/188 , H04L1/1883
摘要： Techniques for retransmitting data via RLP in a CDMA (e.g., cdma2000) system with a first retransmission mechanism provided by the RLP and a second retransmission mechanism provided by an HARQ-CF. In one method, missing RLP frames are first detected (e.g., by a receiver RLP). A dynamic timer is then maintained (e.g., by a receiver HARQ-CF) for each RLP frame detected to be missing. The dynamic timers are event-driven and have variable time durations. Each dynamic timer is updated based on events known to the receiver HARQ-CF. Fixed timers with fixed time durations may also be maintained (e.g., by the receiver RLP) for the missing RLP frames. Whether or not a missing RLP frame is lost is determined based on the dynamic timer and the fixed timer (if any) maintained for the RLP frame. A NAK may be issued for retransmission of each RLP frame deemed to be lost.
摘要翻译： 在具有由RLP提供的第一重传机制的CDMA（例如，cdma2000）系统中通过RLP重传数据的技术和由HARQ-CF提供的第二重传机制。 在一种方法中，首先检测到丢失的RLP帧（例如，由接收机RLP）。 然后，针对检测到丢失的每个RLP帧维护动态定时器（例如，由接收机HARQ-CF）。 动态定时器是事件驱动的，具有可变的持续时间。 基于接收机HARQ-CF已知的事件来更新每个动态定时器。 具有固定时间持续时间的固定定时器也可以由丢失的RLP帧保持（例如由接收器RLP）。 基于为RLP帧维护的动态定时器和固定定时器（如果有的话）确定丢失的RLP帧是否丢失。 可以发出NAK以重传被认为丢失的每个RLP帧。
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9.发明授权公开(公告)号：US07333440B2
公开(公告)日：2008-02-19
申请号：US10600146
申请日：2003-06-19
申请人： Nischal Abrol , Nikolai K. N. Leung
发明人： Nischal Abrol , Nikolai K. N. Leung
CPC分类号： H04L1/1858 , H04L1/1809 , H04L1/1829 , H04L1/1848 , H04L1/20 , H04W76/10
摘要： An improved method and system for determining round-trip time (RTT) during a radio link protocol (RLP) wireless communication link. The RTT estimate is negotiated by both sides of the RLP communication link without the need for the 3-way handshake generally required for RLP synchronization. The method includes techniques used by both sides of the RLP communication link to dynamically update and refine their initial, negotiated RTT estimates.
摘要翻译： 一种在无线电链路协议（RLP）无线通信链路中确定往返时间（RTT）的改进方法和系统。 RTT估计由RLP通信链路的双方协商，而不需要RLP同步通常需要的3次握手。 该方法包括RLP通信链路的双方使用的技术来动态地更新和改进其初始协商的RTT估计。
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公开(公告)号：US06985479B2
公开(公告)日：2006-01-10
申请号：US10091069
申请日：2002-03-04
IPC分类号： H04L12/66
CPC分类号： H04W4/18 , H04L29/06 , H04L29/12009 , H04L29/1216 , H04L29/12367 , H04L29/12377 , H04L29/12415 , H04L61/157 , H04L61/2514 , H04L61/2517 , H04L61/2532 , H04W8/26 , H04W60/00 , H04W80/04 , H04W88/16
摘要： Method and apparatus for data packet communications in a communication system. Packets are received at a gateway having an Internet Protocol (IP) destination address and Network Access Identifier (NAI). The gateway maps the received NAI to a local network, such as supported by a Network Address Translator (NAT). The gateway then converts the destination address to a NAT address of the local network. The gateway also adds a port number that allows the NAT to identify the target recipient. The mapping within the gateway is created and maintained as Mobile Stations send registration requests upon arrival within a local network. In one embodiment, the registration request is a Session Initiation Protocol (SIP) registration.
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