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    Method and apparatus for data packet transport in a wireless communication system using an internet protocol
    4.
    发明授权
    Method and apparatus for data packet transport in a wireless communication system using an internet protocol 有权
    在使用因特网协议的无线通信系统中进行数据分组传输的方法和装置

    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。

    Method and system for a multicast service initiation in a communication system
    5.
    发明授权
    Method and system for a multicast service initiation in a communication system 有权
    通信系统中组播服务启动的方法和系统

    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

    IPC分类号： H04H20/71 ,  H04W4/06 ,  H04W72/00

    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。

    Method and system for hard handoff in a broadcast communication system
    6.
    发明授权
    Method and system for hard handoff in a broadcast communication system 有权

    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.

    Method and system for a multicast service initiation in a communication system
    7.
    发明授权
    Method and system for a multicast service initiation in a communication system 有权
    通信系统中组播服务启动的方法和系统

    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。

    RLP retransmission for CDMA communication systems
    8.
    发明授权
    RLP retransmission for CDMA communication systems 有权
    CDMA通信系统的RLP重传

    公开(公告)号：US07502385B2

    公开(公告)日：2009-03-10

    申请号：US11075589

    申请日：2005-03-08

    申请人： Yongbin Wei ,  Sai Yiu Duncan Ho ,  Nikolai K. N. Leung

    发明人： Yongbin Wei ,  Sai Yiu Duncan Ho ,  Nikolai K. N. Leung

    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。

    Radio link protocol enhancements to reduce setup time for data calls
    9.
    发明授权
    Radio link protocol enhancements to reduce setup time for data calls 有权
    无线链路协议增强，减少数据呼叫的建立时间

    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

    IPC分类号： H04J13/00 ,  G08C25/02

    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。