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1. 发明申请

US20050083899A1 System selection for wireless data services 有权
标题翻译：无线数据业务的系统选择
公开(公告)号：US20050083899A1
公开(公告)日：2005-04-21
申请号：US10816314
申请日：2004-04-01
申请人： Uppinder Babbar , Nikolai Leung , Marcello Lioy , Siva Veerepalli , Anup Kuzhiyil , James Willkie , Jeffrey Dyck
发明人： Uppinder Babbar , Nikolai Leung , Marcello Lioy , Siva Veerepalli , Anup Kuzhiyil , James Willkie , Jeffrey Dyck
IPC分类号： H04W8/18 , H04W48/00 , H04W88/06 , H04B7/216
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。

2. 发明申请

US20070002798A1 Method and system for hard handoff in a broadcast communication system 有权
标题翻译：广播通信系统中硬切换的方法和系统
公开(公告)号：US20070002798A1
公开(公告)日：2007-01-04
申请号：US11514638
申请日：2006-08-31
申请人： Nikolai Leung
发明人： Nikolai 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.
摘要翻译：公开了广播通信系统中切换的方法和系统。由于例如高信令负载，难以同步广播传输，用户辅助切换在广播通信系统中是不切实际的。另一方面，少量的广播信道使得用户台能够自主地进行切换。在广播传输之间执行切换时，由于广播传输之间缺乏同步而发生服务中断。为了减少服务中断，在检测到切换需要时，较低层向应用层通知即将进行的切换。因此，应用层可以采取措施来减少或防止中断。

3. 发明申请

US20060023715A1 System and method for frame re-transmission in a broadcast communication system 有权
标题翻译：广播通信系统中帧重传的系统和方法
公开(公告)号：US20060023715A1
公开(公告)日：2006-02-02
申请号：US11227887
申请日：2005-09-14
申请人： Tao Chen , Nikolai Leung , Edward Tiedemann , Ragulan Sinnarajah
发明人： Tao Chen , Nikolai Leung , Edward Tiedemann , Ragulan Sinnarajah
IPC分类号： H04L12/56
CPC分类号： H04L1/1887 , H04L2001/0093
摘要： An apparatus for providing frame re-transmission in a broadcast communication system. Frame re-transmission is accomplished only when a predetermined number of negative acknowledgement messages are received with respect to one or more data frames. The predetermined number may vary in accordance with various operating parameters, such as the latency of the transmission and/or the number of wireless communication devices currently receiving a broadcast transmission.
摘要翻译：一种用于在广播通信系统中提供帧重传的装置。仅当相对于一个或多个数据帧接收到预定数量的否定确认消息时才实现帧重传。预定数量可以根据各种操作参数而变化，例如传输的等待时间和/或当前正在接收广播传输的无线通信设备的数量。

4. 发明申请

US20050169203A1 Method and system for a multicast service initiation in a communication system 有权
公开(公告)号：US20050169203A1
公开(公告)日：2005-08-04
申请号：US11097594
申请日：2005-04-01
申请人： Ragulan Sinnarajah , Jun Wang , Nikolai Leung , Tao Chen
发明人： Ragulan Sinnarajah , Jun Wang , Nikolai Leung , Tao Chen
IPC分类号： H04M3/42 , H04B7/26 , H04L12/28 , H04L12/56 , H04W4/06 , H04J3/24
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.

5. 发明申请

US20050117521A1 Radio link protocol enhancements to reduce setup time for data calls 有权
标题翻译：无线链路协议增强，减少数据呼叫的建立时间
公开(公告)号：US20050117521A1
公开(公告)日：2005-06-02
申请号：US10600146
申请日：2003-06-19
申请人： Nischal Abrol , Nikolai Leung
发明人： Nischal Abrol , Nikolai Leung
IPC分类号： H04L29/08 , H04B7/26 , H04L1/18 , H04L1/20 , H04L12/28 , H04W28/04 , H04W76/02 , H04W76/04 , H04L12/26
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。

6. 发明申请

US20050007636A1 Apparatus and method for supporting analog fax calls in a tandem configuration 有权
标题翻译：用于以串联配置支持模拟传真呼叫的装置和方法
公开(公告)号：US20050007636A1
公开(公告)日：2005-01-13
申请号：US10912928
申请日：2004-08-06
申请人： Nikolai Leung
发明人： Nikolai Leung
IPC分类号： H04N1/32 , H04B14/04 , H04N1/00 , H04W88/18 , H04M1/00
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。

7. 发明授权

US06618375B2 Radio link protocol frame sorting mechanism for dynamic capacity wireless data channels 有权
标题翻译：无线链路协议帧分类机制，用于动态容量无线数据信道
公开(公告)号：US06618375B2
公开(公告)日：2003-09-09
申请号：US09394974
申请日：1999-09-13
申请人： Ramin Rezaiifar , Nischal Abrol , Nikolai Leung , Stein S. Lundby
发明人： Ramin Rezaiifar , Nischal Abrol , Nikolai Leung , Stein S. Lundby
IPC分类号： H04L1256
CPC分类号： H04L1/1809 , H04L1/1841 , H04L29/06 , H04L69/14 , H04L69/32 , H04L69/324
摘要： The present invention is a novel and improved method and system that prevents RLP3E from generating unnecessary NAKs, thus preventing unnecessary data frame retransmissions. The present invention is efficient, neither delaying the delivery of data frames to the higher data services layer nor delaying the delivery of necessary NAKs to the multiplex sublayer. Additionally, the present invention can be implemented with minimal changes to an existing RLP3E implementation. The present invention is applicable to systems such as cdma2000, W-CDMA, and EDGE, wherein data is transferred using an ARQ (automatic request for retransmission) mechanism, and wherein data packets are sometimes received in an order different from that in which they were transmitted.
摘要翻译：本发明是一种防止RLP3E产生不必要的NAK的新颖改进的方法和系统，从而防止不必要的数据帧重传。本发明是有效的，既不延迟将数据帧传送到较高数据服务层，也不延迟向多路复用子层递送必要的NAK。另外，本发明可以通过对现有RLP3E实现的最小改变来实现。本发明适用于诸如cdma2000，W-CDMA和EDGE的系统，其中使用ARQ（自动重发请求）机制传送数据，并且其中数据分组有时以与它们不同的顺序接收传输。

8. 发明申请

US20060256794A1 Method and apparatus for resolving ambiguity in reception of multiple retransmitted frames 有权
公开(公告)号：US20060256794A1
公开(公告)日：2006-11-16
申请号：US11406741
申请日：2006-04-18
申请人： Ramin Rezaiifar , Nikolai Leung
发明人： Ramin Rezaiifar , Nikolai 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.

9. 发明申请

US20050163161A1 RLP retransmission for CDMA communication systems 有权
标题翻译： CDMA通信系统的RLP重传
公开(公告)号：US20050163161A1
公开(公告)日：2005-07-28
申请号：US11075589
申请日：2005-03-08
申请人： Yongbin Wei , Sai Duncan Ho , Nikolai Leung
发明人： Yongbin Wei , Sai Duncan Ho , Nikolai Leung
IPC分类号： H04J13/00 , H04L1/18 , H04L29/08 , H04J3/16
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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