公开(公告)号：US20100128613A1

公开(公告)日：2010-05-27

申请号：US12313630

申请日：2008-11-21

Applicant: Chung-Zin Liu ,  Stinson Samuel Mathai

Inventor： Chung-Zin Liu ,  Stinson Samuel Mathai

IPC: G06F11/30

CPC classification number: H04L65/1016 ,  H04L41/0681 ,  H04L43/0811 ,  H04L65/80

Abstract: The present invention provides a method for detecting bearer loss in an IP-based multimedia session. A multimedia session is initiated by an access terminal. A Policy and Charging Rules Function (PCRF) communicates the Session setup information and the bearer characteristics to a Signaling Gateway (SGW). The SGW uses this information to adjust the dormancy timers on the originating side so that the originating access link remains active during the call setup.

Abstract translation: 本发明提供了一种用于检测基于IP的多媒体会话中的承载丢失的方法。 多媒体会话由接入终端发起。 策略和计费规则功能（PCRF）将会话建立信息和承载特性传送给信令网关（SGW）。 SGW使用此信息来调整始发方的休眠定时器，以便始发接入链路在呼叫建立过程中保持活动状态。

公开(公告)号：US20090141683A1

公开(公告)日：2009-06-04

申请号：US11948248

申请日：2007-11-30

Applicant: Edward Grinshpun ,  Chung-Zin Liu ,  Lily H. Zhu

Inventor： Edward Grinshpun ,  Chung-Zin Liu ,  Lily H. Zhu

IPC: H04Q7/00

CPC classification number: H04W60/06 ,  H04W36/0066

Abstract: The present invention provides a method of best effort hand off that is implemented in a mobile unit capable of communicating with a network according to multiple wireless access technologies. The method includes performing a handoff of the mobile unit from a first wireless communication link established according to a first wireless access technology to a second wireless communication link established according to a second wireless access technology. The method also includes transmitting, over the second wireless communication link, a de-registration message requesting de-registration of the first wireless communication link in response to performing the handoff.

Abstract translation: 本发明提供了一种在能够根据多种无线接入技术与网络进行通信的移动单元中实施的尽力切换的方法。 该方法包括：将移动单元从根据第一无线接入技术建立的第一无线通信链路切换到根据第二无线接入技术建立的第二无线通信链路。 该方法还包括响应于执行切换，在第二无线通信链路上发送请求去注册第一无线通信链路的解除注册消息。

公开(公告)号：US20090037999A1

公开(公告)日：2009-02-05

申请号：US11888175

申请日：2007-07-31

Applicant: Thomas W. Anderson ,  Chung-Zin Liu ,  Harold A. Lassers ,  Stinson S. Mathai

Inventor： Thomas W. Anderson ,  Chung-Zin Liu ,  Harold A. Lassers ,  Stinson S. Mathai

IPC: G06F9/00

CPC classification number: H04W28/16 ,  H04L69/14 ,  H04W8/082 ,  H04W76/10 ,  H04W80/04 ,  H04W80/10

Abstract: A method of supporting access to a selected Internet Protocol (IP) multimedia application via an IP Multimedia Subsystem (IMS) is provided for a roaming mobile node (MN)—i.e., user equipment (UE) (10)—served by a wireless telecommunications system. The method includes: establishing a first IP tunnel (20) between the UE (10) and a local access gateway (30) of a visited network in which the UE (10) is roaming, the first tunnel (20) being anchored at the local access gateway (30); establishing a second IP tunnel (22′) between the UE (10) and a home gateway (40′) of a home network to which the UE (10) belongs, the second tunnel (22′) being anchored at the home gateway (40′); receiving data packets at the local access gateway (30) for the UE (10); filtering the packets received at the local access gateway (30) to suitably classify corresponding traffic into one of a plurality of data flows (20a, 20b, . . . 20n) supported within the first tunnel (20) at varying Quality of Service (QoS) levels; receiving data packets at the home gateway (40′) for the UE (10); and, filtering the packets received at the home gateway (40′) to suitably classify corresponding traffic into one of a plurality of data flows (22a, 22b, . . . 22n) supported within the second tunnel (22′) at varying QoS levels.

Abstract translation: 为漫游移动节点（MN）提供支持通过IP多媒体子系统（IMS）对所选择的因特网协议（IP）多媒体应用的访问的方法，即由无线电信服务的用户设备（UE）（10） 系统。 该方法包括：在UE（10）和UE（10）正在漫游的被访问网络的本地接入网关（30）之间建立第一IP隧道（20），第一隧道（20）锚定在 本地接入网关（30）; 在所述UE（10）和所述UE（10）所属的归属网络的家庭网关（40'）之间建立第二IP隧道（22'），所述第二隧道（22'）锚定在所述家庭网关 40'）; 在所述UE（10）的本地接入网关（30）处接收数据分组; 过滤在本地接入网关（30）处接收到的分组，以适当地将对应的流量分类为在改变服务质量（QoS）的情况下支持在第一隧道（20）内的多个数据流（20a，20b，...，20n）之一 ）水平; 在所述家庭网关（40'）处为所述UE（10）接收数据分组; 并且对在家庭网关（40'）处接收到的分组进行过滤以将相应的业务适当地分类为在不同QoS级别下支持在第二隧道（22'）内的多个数据流（22a，22b，...，22n）中的一个 。

公开(公告)号：US20080095136A1

公开(公告)日：2008-04-24

申请号：US11585695

申请日：2006-10-24

Applicant: Chung-Zin Liu ,  Thomas Trayer Towle

Inventor： Chung-Zin Liu ,  Thomas Trayer Towle

IPC: H04B7/216

CPC classification number: H04L47/10 ,  H04L45/50 ,  H04L47/196 ,  H04L47/20 ,  H04L47/2416 ,  H04L65/80

Abstract: An apparatus in one example has: at least one access network operatively coupled to an access and data network; and a controller in the access and packet data network, the controller determining access of data flow from the access network through the access and data network. Embodiments allow access or packet data service providers to control which types of services are allowed over their respective access and packet data networks.

Abstract translation: 一个示例中的装置具有：操作地耦合到接入和数据网络的至少一个接入网络; 以及访问和分组数据网络中的控制器，所述控制器确定从所述接入网络通过所述接入和数据网络访问数据流。 实施例允许接入或分组数据服务提供商控制在其各自的接入和分组数据网络上允许哪些类型的业务。

公开(公告)号：US07062265B1

公开(公告)日：2006-06-13

申请号：US09587732

申请日：2000-06-05

Applicant: Young-fu Chang ,  Michael Francis Dolan ,  Chung-Zin Liu ,  John P. Menard ,  Milo Orsic ,  Jin Yang

Inventor： Young-fu Chang ,  Michael Francis Dolan ,  Chung-Zin Liu ,  John P. Menard ,  Milo Orsic ,  Jin Yang

IPC: H04Q7/20 ,  H04Q7/38

CPC classification number: H04Q3/0062 ,  H04L12/2803 ,  H04W4/00 ,  H04W8/00

Abstract: An architecture to support service features for wireless calls in a wireless telecommunication system is disclosed. Service feature administration for a wireless terminal is provided by a packet data feature server in a home network that is connected to a packet data network. During call setup on behalf of the wireless terminal, the feature server is accessed via the packet data network to manage service features that are specific to the wireless terminal.

Abstract translation: 公开了一种在无线电信系统中支持无线呼叫的服务特征的架构。 用于无线终端的服务特征管理由连接到分组数据网络的归属网络中的分组数据特征服务器提供。 在代表无线终端的呼叫建立期间，通过分组数据网络访问特征服务器，以管理无线终端特有的服务特征。

公开(公告)号：US06434382B1

公开(公告)日：2002-08-13

申请号：US09803860

申请日：2001-03-12

Applicant: Chung-Zin Liu ,  Jin Wang

Inventor： Chung-Zin Liu ,  Jin Wang

IPC: H04Q720

Abstract: The cellular call processor having concurrent instances of call models supports mixed media communication connections. The cellular call processor processes each of the media components of the mixed media communication connection in an independent, yet coordinated manner. Thus, each of the media components of the mixed media communication connection can be processed in an efficient media-specific manner and even directed to different destinations. The cellular call processor can implement this capability in a plurality of ways, one of which is to maintain the existing voice call model and create a new call model for each of the other call components in a media-specific manner. Alternatively, multiple instances of the same call model can be used, with each call component being served by a separate instance of the call processing code. Communications among the various instances of the call models occur only at the call setup and release and the call models can be implemented in the same physical network element or can be implemented in separate network elements that are customized for the type of call component being processed.

公开(公告)号：US06405040B1

公开(公告)日：2002-06-11

申请号：US08938755

申请日：1997-09-26

Applicant: Chung-Zin Liu ,  Robert Shaw Sellinger

Inventor： Chung-Zin Liu ,  Robert Shaw Sellinger

IPC: H04Q720

CPC classification number: H04W88/06

Abstract: A wireless terminal is disclosed that is capable of establishing a communications channel with either a public wireless network or a private wireless network on existing IS-95 CDMA facilities without changing the air interface or requiring the existence of independent private network facilities. Furthermore, a wireless terminal is disclosed that enables a user of a wireless terminal to affect which private wireless network the wireless terminal accesses, again on existing IS-95 facilities and without changing the air interface. The wireless terminal comprises two or more lists of SID/NID signals: a default list and at least one override list. Both the default list and the override list provide a different preference for which public or private network the wireless terminal accesses when a call is placed from the wireless terminal. A switch in the wireless terminal advantageously causes the wireless terminal to use either the default list of SID/NID signals or one of the override lists of SID/NID signals. The switch can be activated either manually by the user or by inserting the wireless terminal into a cradle in accordance with the present invention.

Abstract translation: 公开了能够在现有IS-95 CDMA设施上与公共无线网络或专用无线网络建立通信信道的无线终端，而不改变空中接口或要求存在独立的专用网络设施。 此外，公开了一种无线终端，其使得无线终端的用户能够再次在现有的IS-95设施上影响无线终端访问的专用无线网络，并且不改变空中接口。无线终端包括两个或更多个SID列表 / NID信号：默认列表和至少一个覆盖列表。 默认列表和覆盖列表为从无线终端发出呼叫时无线终端访问的公共或专用网络提供不同的优先级。 无线终端中的交换机有利地使无线终端使用SID / NID信号的默认列表或SID / NID信号的覆盖列表之一。 根据本发明，可以由用户手动激活开关或者通过将无线终端插入到支架中来激活。

公开(公告)号：US06377572B1

公开(公告)日：2002-04-23

申请号：US09080769

申请日：1998-05-18

Applicant: Michael F. Dolan ,  Chung-Zin Liu ,  Harvey Rubin ,  Kenneth Wayne Strom

Inventor： Michael F. Dolan ,  Chung-Zin Liu ,  Harvey Rubin ,  Kenneth Wayne Strom

IPC: H04L1258

CPC classification number: H04W28/16 ,  H04W76/10 ,  Y10S370/913

Abstract: A system includes a first virtual end point processor (332) operably coupled to a plurality of channel elements (304) and a second virtual end point processor (340) operably coupled to a plurality of frame selectors (314). The system also includes at least one signaling manager (318, 334) that is arranged and constructed to establish a communication path that terminates at the first virtual end point processor (332) and the second virtual end point processor (340) prior to receiving a request for resources for a data call, such that set-up time for the data call through a wireless network is reduced.

Abstract translation: 系统包括可操作地耦合到多个通道元件（304）的第一虚拟终点处理器（332）和可操作地耦合到多个框架选择器（314）的第二虚拟终点处理器（340）。 该系统还包括至少一个信令管理器（318,334），其被布置和构造成在接收到第一虚拟终点处理器之前建立终止于第一虚拟终点处理器（332）和第二虚拟终点处理器（340）的通信路径 请求数据呼叫的资源，从而减少通过无线网络进行数据呼叫的建立时间。

公开(公告)号：US5943332A

公开(公告)日：1999-08-24

申请号：US775551

申请日：1996-12-31

Applicant: Chung-Zin Liu ,  Kenneth Wayne Strom

Inventor： Chung-Zin Liu ,  Kenneth Wayne Strom

IPC: H04W8/26 ,  H04W48/16 ,  H04W60/00 ,  H04W84/00 ,  H04B7/216

CPC classification number: H04W84/00 ,  H04W48/16 ,  H04W60/00 ,  H04W8/26

Abstract: A wireless telecommunications system that is capable of providing multiple virtual wireless networks (e.g., a public network and/or one or more private networks) from a single IS-95 compliant CDMA radio without changing the air interface or modifying existing hardware designs. Includes the steps of broadcasting from a radio a first SID/NID signal and a FOR.sub.-- NID.sub.-- REG signal to a wireless terminal, wherein the first SID/NID signal is associated with a first set of user zones; receiving from the wireless terminal: (1) a indicium of the wireless terminal's identity, and (2) a request to register the wireless terminal based on a second SID/NID signal, wherein the second SID/NID signal is associated with a second set of user zones; transmitting the indicium of the wireless terminal's identity to a database; receiving from the database a prioritized list of user zones based on the indicium of the wireless terminal's identity; and registering the wireless terminal based on a first user zone, which first user zone is the user zone that has the highest priority in the prioritized list of user zones and that is also a member of the second set of user zones.

Abstract translation: 能够从单个IS-95兼容的CDMA无线电提供多个虚拟无线网络（例如，公共网络和/或一个或多个专用网络）而无需改变空中接口或修改现有硬件设计的无线电信系统。 包括从无线电广播第一SID / NID信号和FOR-NID-REG信号到无线终端的步骤，其中第一SID / NID信号与第一组用户区域相关联; 从无线终端接收：（1）无线终端身份的标记，以及（2）基于第二SID / NID信号注册无线终端的请求，其中第二SID / NID信号与第二组相关联 的用户区域; 将无线终端身份的标识传送到数据库; 基于无线终端身份的标记从数据库接收用户区域的优先列表; 以及基于第一用户区域注册所述无线终端，所述第一用户区域是所述优先级用户区域列表中具有最高优先级并且也是所述第二组用户区域的成员的所述用户区域。