公开(公告)号：US20090175239A1

公开(公告)日：2009-07-09

申请号：US11970169

申请日：2008-01-07

Applicant: Edward Grinshpun ,  Chung Zin Liu ,  E-Ling Lou ,  Harinath Rachapalli ,  Lily Zhu

Inventor： Edward Grinshpun ,  Chung Zin Liu ,  E-Ling Lou ,  Harinath Rachapalli ,  Lily Zhu

IPC: H04Q7/00

CPC classification number: H04W36/28 ,  H04W36/0011 ,  H04W76/20 ,  H04W88/06

Abstract: The present invention provides a method of handing off a mobile unit that supports multiple quality-of-service (QoS) application layer clients that operate according to multiple wireless access technologies in a packet-switched communication system. The method includes receiving information indicating a request to hand off the mobile unit from a first access network that operates according to a first wireless access technology to a second access network that operates according to a second wireless access technology. The mobile unit established a first session according to the first wireless access technology at a first QoS level. The method also includes establishing, concurrently with the first session and in response to receiving the handoff request, a second session according to the second wireless access technology at the first QoS level. The method further includes communicating with the mobile unit at the first QoS level using the first and second sessions.

Abstract translation: 本发明提供一种在分组交换通信系统中移交支持根据多种无线接入技术操作的多个服务质量（QoS）应用层客户端的移动单元的方法。 该方法包括：接收指示将移动单元从根据第一无线接入技术操作的第一接入网络切换到根据第二无线接入技术进行操作的第二接入网络的请求的信息。 移动单元根据第一无线接入技术在第一QoS级别建立第一会话。 该方法还包括与第一会话同时建立并且响应于接收切换请求，在第一QoS级别根据第二无线接入技术建立第二会话。 该方法还包括使用第一和第二会话在第一QoS级别与移动单元进行通信。

公开(公告)号：US07013129B2

公开(公告)日：2006-03-14

申请号：US09882697

申请日：2001-06-14

Applicant: Stephen C. Goss ,  Jeffrey Ross Light ,  Chung-Zin Liu ,  Omar Hernando Salvador ,  Gitesh P. Shah ,  Mark Kevin Stockert ,  Kenneth Wayne Strom ,  Charles Varvaro ,  Randall Joe Wilson

Inventor： Stephen C. Goss ,  Jeffrey Ross Light ,  Chung-Zin Liu ,  Omar Hernando Salvador ,  Gitesh P. Shah ,  Mark Kevin Stockert ,  Kenneth Wayne Strom ,  Charles Varvaro ,  Randall Joe Wilson

IPC: H04M1/00 ,  H04M1/64 ,  H04M3/42 ,  H04Q1/00 ,  H04B7/00

CPC classification number: H04W76/18 ,  H04W4/16

Abstract: Apparatus and a method for establishing a cellular mobile call. If no radio traffic (voice or data) channels are available for a calling Mobile Station (MS), then a test is made to determine the expected wait time before a channel becomes available. If the expected wait time is less than a first threshold, then the call request is queued. If a channel does not become available before a second time threshold, then the caller is notified that the call has been queued and is expected to be established in a short time. A control message is sent to the MS to trigger an indication of the queued status to the user. The indication may be one or more tones, a data display, or the playing of a pre-recorded announcement. If the expected wait time is more than the first threshold, the caller is given the opportunity to be called back when a radio channel becomes available. Advantageously, the number of failed calls because of unavailable traffic channels is reduced, and the caller's annoyance level is reduced.

公开(公告)号：US06658255B1

公开(公告)日：2003-12-02

申请号：US09517687

申请日：2000-03-02

Applicant: Stephen Clifford Goss ,  Jeffrey Ross Light ,  Chung-Zin Liu ,  Omar Hernando Salvador ,  Gitesh P. Shah ,  Mark Kevin Stockert ,  Kenneth Wayne Strom ,  Charles Varvaro ,  Randall Joe Wilson

Inventor： Stephen Clifford Goss ,  Jeffrey Ross Light ,  Chung-Zin Liu ,  Omar Hernando Salvador ,  Gitesh P. Shah ,  Mark Kevin Stockert ,  Kenneth Wayne Strom ,  Charles Varvaro ,  Randall Joe Wilson

IPC: H04Q720

CPC classification number: H04W28/02 ,  H04Q3/0029 ,  H04W4/16 ,  H04W76/10

Abstract: Apparatus and a method for establishing a cellular mobile call. If no radio traffic (voice or data) channels are available for a calling or called mobile station (MS), then a test is made to determine the expected wait time before a channel becomes available. If the expected wait time is less than a first threshold, then the call or the call request is queued. If a channel for an incoming call to an MS does not become available before a second time threshold, then the caller is notified by an announcement that the call has been queued and is expected to be established in a short time. If the caller of an incoming call to the MS does not disconnect, then the MSC waits for an available channel and establishes a connection to the MS over that available channel. For an outgoing call from an MS, a control message is sent to the MS to trigger an indication of the queued status to the user. The indication may be one or more tones, a data display, or the playing of a pre-recorded announcement. Advantageously, the number of calls blocked because of unavailable traffic channels is reduced. Advantageously, the same arrangement can be used to reduce blocking of calls because of unavailability of trunks for a link of a call connection.

Abstract translation: 用于建立蜂窝移动呼叫的装置和方法。 如果呼叫或被叫移动台（MS）没有可用的无线电业务（语音或数据）信道，则进行测试以确定信道变得可用之前的预期等待时间。 如果预期的等待时间小于第一阈值，则呼叫或呼叫请求被排队。 如果用于MS呼入呼叫的信道在第二时间阈值之前不可用，则呼叫者被通告通知呼叫已经排队并预期在短时间内被建立。 如果MS的来电呼叫方没有断开连接，则MSC等待可用信道，并通过该可用信道建立与MS的连接。 对于来自MS的去话呼叫，向MS发送控制消息以触发向用户排队状态的指示。 该指示可以是一个或多个音调，数据显示或预录制通知的播放。 有利地，由于不可用的业务信道而被阻塞的呼叫数量减少。 有利地，由于呼叫连接的链路的中继线不可用，可以使用相同的布置来减少呼叫的阻塞。

公开(公告)号：US06625153B1

公开(公告)日：2003-09-23

申请号：US09392369

申请日：1999-09-08

Applicant: Chung Zin Liu

Inventor： Chung Zin Liu

IPC: H04L1228

CPC classification number: H04W88/16 ,  H04L41/00

Abstract: The distributed cellular communication system architecture for the co-existence of multiple technologies uses the mapping table capability of the Asynchronous Transfer Mode network and the multi-layer nature of the signaling protocol that is used in cellular communication networks to transparently interconnect cellular communication network elements that use different technologies and/or signaling protocols. The present distributed cellular communication system architecture avoids the need for significant changes in the cellular call processing software to accommodate new cellular communication network components by inserting signal routing data into the Asynchronous Transfer Mode network routing tables to thereby interconnect signals between compatible endpoints that are connected to the Asynchronous Transfer Mode network. The layer 1 and layer 2 protocols of the Asynchronous Transfer Mode network are used as the conduit that carries the signals between endpoints and are the same for all technologies and signaling protocols. The data contained in the upper layers of the multi-layer protocol are technology and signaling protocol specific, but are not interpreted by the Asynchronous Transfer Mode network, they are simply routed to a designated endpoint pursuant to the data entries in the routing tables of the Asynchronous Transfer Mode network.

Abstract translation: 用于多个技术的共存的分布式蜂窝通信系统架构使用异步传输模式网络的映射表能力和蜂窝通信网络中使用的信令协议的多层性质来透明地互连蜂窝通信网络元件， 使用不同的技术和/或信令协议。 本发明的分布式蜂窝通信系统架构避免了蜂窝呼叫处理软件的重大变化的需要，以通过将信号路由数据插入到异步传输模式网络路由表中来适应新的蜂窝通信网络组件，从而将连接到 异步传输模式网络。 异步传输模式网络的第1层和第2层协议被用作在端点之间传送信号并且对于所有技术和信令协议是相同的导线。 包含在多层协议的上层的数据是技术和信令协议特定的，但不被异步传输模式网络解释，它们根据路由表中的数据条目被简单地路由到指定的端点 异步传输模式网络。

公开(公告)号：US06434139B1

公开(公告)日：2002-08-13

申请号：US09371385

申请日：1999-08-10

Applicant: Chung-Zin Liu ,  Kenneth Wayne Strom

Inventor： Chung-Zin Liu ,  Kenneth Wayne Strom

IPC: H04L1266

CPC classification number: H04M7/0072 ,  H04M7/1245 ,  H04M2207/18 ,  H04M2207/206 ,  H04Q2213/13034 ,  H04Q2213/13098 ,  H04Q2213/13196 ,  H04Q2213/13209 ,  H04Q2213/1329 ,  H04Q2213/13292 ,  H04Q2213/13294 ,  H04Q2213/13389 ,  H04W88/181

Abstract: A telecommunication system routs real-time information traffic from an originating digital radio unit served by an originating network to a terminating unit served by a terminating network via an intermediate network interconnecting the originating and terminating networks. The originating digital radio unit has an encoder/decoder (e.g., a vocoder) for generating digital wireless frames from information that is input thereto. The originating network includes an originating node with an encoder/decoder for performing wireless-specific conversion of the digital wireless frames to digital wireline (e.g., PCM) traffic. The intermediate network includes an originating-end interface node with an encoder/decoder for compressing the digital wireline traffic for transport across the intermediate network. Optimization of communications routed between the originating and terminating units is achieved by routing the digital wireless frames without wireless-specific conversion being performed at the originating node of the originating network nor compression conversion being performed at the originating-end interface node of the intermediate network, such that the rate of information traffic throughput is maximized.

Abstract translation: 电信系统将来自始发数字无线电单元的始发数字无线电单元的实时信息业务通过互连起始和终止网络的中间网络路由由终端网络服务的终接单元。 始发数字无线电单元具有用于从输入到其的信息生成数字无线帧的编码器/解码器（例如声码器）。 始发网络包括具有编码器/解码器的始发节点，用于执行数字无线帧到数字有线（例如PCM）业务的无线特定转换。 中间网络包括具有编码器/解码器的起始端接口节点，用于压缩数字有线线路以用于中间网络的传输。 通过在始发网络的始发节点处执行无特定转换的数字无线帧的路由，并且在中间网络的始发端接口节点执行压缩转换来实现在始发单元和终端单元之间路由的通信的优化， 使得信息业务吞吐量的速率最大化。

公开(公告)号：US06285877B1

公开(公告)日：2001-09-04

申请号：US09123179

申请日：1998-07-27

Applicant: Chung-Zin Liu ,  Jin Wang

Inventor： Chung-Zin Liu ,  Jin Wang

IPC: H04Q720

CPC classification number: H04W88/08 ,  H04W4/00

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.

Abstract translation: 具有呼叫模型的并发实例的蜂窝呼叫处理器支持混合媒体通信连接。 蜂窝呼叫处理器以独立但协调的方式处理混合媒体通信连接的每个媒体分量。 因此，可以以有效的媒体特定方式处理混合媒体通信连接的每个媒体组件，甚至可以针对不同的目的地进行处理。 蜂窝呼叫处理器可以以多种方式实现该功能，其中之一是维持现有的语音呼叫模型，并以媒体特定的方式为每个其他呼叫组件创建一个新的呼叫模型。 或者，可以使用相同呼叫模型的多个实例，每个呼叫组件由呼叫处理代码的单独实例服务。 呼叫模型的各种实例之间的通信仅在呼叫建立和释放时发生，并且呼叫模型可以在相同的物理网元中实现，或者可以在针对被处理的呼叫组件的类型定制的单独的网络元件中实现。

公开(公告)号：US6061337A

公开(公告)日：2000-05-09

申请号：US759332

申请日：1996-12-02

Applicant: Jeffrey Ross Light ,  Chung-Zin Liu ,  Charles Varvaro

Inventor： Jeffrey Ross Light ,  Chung-Zin Liu ,  Charles Varvaro

IPC: H04W36/32 ,  H04Q7/22

CPC classification number: H04W36/32

Abstract: A system and method for measuring the approximate distance and direction of a mobile unit from a plurality of cells in order to determine whether and how to handoff the mobile unit and which cell may be the best serving cell. The CDMA timing system is used to provide an estimate of the subscriber's location to be determined by a CDMA base station. A distance calculation is made by the serving cell site sending a request for signal strength message to a mobile unit. The mobile unit measures pilot signal strength and a time offset from the expected time of such pilot signals. The signal strength and time offsets are returned to the cell site. a processor in the system can then determine if a handoff is really desirable, and with which of the cell sites is the best serving all for the mobile unit the mobile unit with a high degree of confidence that the call will be maintained. Also, an adaptive database may be implemented wherein a mobile unit is tracked to the edge of the coverage area and, a database is kept of successful handoffs to another carrier.

Abstract translation: 一种用于测量来自多个小区的移动单元的近似距离和方向的系统和方法，以便确定是否以及如何切换移动单元以及哪个小区可以是最佳服务小区。 CDMA定时系统用于提供由CDMA基站确定的用户位置的估计。 由服务小区站点向移动单元发送对信号强度消息的请求进行距离计算。 移动单元测量导频信号强度和与这种导频信号的预期时间的时间偏移。 信号强度和时间偏移返回到小区站点。 系统中的处理器然后可以确定切换是否是真正期望的，并且对于移动单元，哪个小区站点最适合为移动单元提供呼叫将被维持的高度置信度。 此外，可以实现自适应数据库，其中移动单元被跟踪到覆盖区域的边缘，并且保持数据库成功切换到另一个载波。

公开(公告)号：US6002679A

公开(公告)日：1999-12-14

申请号：US778388

申请日：1996-12-31

Applicant: Chung-Zin Liu ,  Kenneth Wayne Strom

Inventor： Chung-Zin Liu ,  Kenneth Wayne Strom

IPC: H04W8/04 ,  H04W8/18 ,  H04W8/20 ,  H04W48/12 ,  H04W48/18 ,  H04W60/00 ,  H04B7/216

CPC classification number: H04W48/18 ,  H04W48/12 ,  H04W60/00 ,  H04W8/04 ,  H04W8/18 ,  H04W8/183 ,  H04W8/205

Abstract: A wireless telecommunications system is disclosed that is capable of providing both public wireless service and virtual private network service on existing IS-95 CDMA facilities without changes to the air interface, the hardware design or the protocols for interacting with home location registers. An illustrative embodiment of the present invention comprises: 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; transmitting to the home location register a pseudo directory number that is 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; and receiving from the database a feature set based on the pseudo directory number.

Abstract translation: 公开了能够在现有IS-95 CDMA设施上提供公共无线服务和虚拟专用网络服务的无线电信系统，而无需改变空中接口，硬件设计或用于与归属位置寄存器交互的协议。 本发明的说明性实施例包括：从无线电广播第一SID / NID信号和FOR-NID-REG信号到无线终端，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; 向本地位置发送注册基于第一用户区域的伪目录号码，该第一用户区域是在优先级用户区域列表中具有最高优先级的用户区域，并且还是第二组 用户区; 并且从数据库接收基于伪目录号码的特征集。

公开(公告)号：US20120157041A1

公开(公告)日：2012-06-21

申请号：US13408604

申请日：2012-02-29

Applicant: Yigang Cai ,  Chung-Zin Liu

Inventor： Yigang Cai ,  Chung-Zin Liu

IPC: H04W4/26

CPC classification number: H04W4/24 ,  H04L12/1403 ,  H04L12/1446 ,  H04L12/1453

Abstract: Communication networks and methods are disclosed for performing online charging credit control in a visited network when a user is roaming. The visited network which is providing service to a roaming user includes a proxy online charging system (OCS) that communicates with a home OCS in a home network of the user. The proxy OCS transmits an online charging request message to a home OCS in a home network for the roaming user requesting charging information for the roaming user. The proxy OCS receives an online charging response message from the home OCS that includes the charging information for the roaming user. The proxy OCS then processes the charging information to perform credit control for one or more network elements in the visited network that is serving the session.

Abstract translation: 公开了当用户正在漫游时在访问网络中执行在线计费信用控制的通信网络和方法。 向漫游用户提供服务的访问网络包括与用户家庭网络中的家庭OCS通信的代理在线计费系统（OCS）。 代理OCS向家庭网络中的家庭OCS发送在线计费请求消息，用于漫游用户请求用于漫游用户的计费信息。 代理OCS从家庭OCS接收包括漫游用户的计费信息的在线计费响应消息。 代理OCS然后处理计费信息以对正在服务会话的被访问网络中的一个或多个网络元件执行信用控制。

公开(公告)号：US08204022B2

公开(公告)日：2012-06-19

申请号：US12243989

申请日：2008-10-02

Applicant: Harold Aaron Lassers ,  Chung-Zin Liu

Inventor： Harold Aaron Lassers ,  Chung-Zin Liu

IPC: H04W4/00 ,  H04W36/00 ,  H04J3/16

CPC classification number: H04W88/181 ,  H04W36/0033

Abstract: The present invention provides a method for supporting handoffs of a first mobile unit in a wireless communication system that supports multiple vocoder technologies. The method includes allocating, prior to completion of a handoff of the first mobile unit, a transcoder function to the first mobile unit. The method also includes detecting a change in a format of at least one packet received from the first mobile unit. The change indicates that the vocoder technology used by the first mobile unit to form packets has changed. The method also includes transcoding packets in response to detecting the change in the format.

Abstract translation: 本发明提供了一种用于支持在支持多个声码器技术的无线通信系统中的第一移动单元的切换的方法。 该方法包括在完成第一移动单元的切换之前向第一移动单元分配代码转换器功能。 该方法还包括检测从第一移动单元接收的至少一个分组的格式的变化。 该变化表示第一移动单元使用的声码器技术来形成分组已经改变。 该方法还包括响应于检测到格式的变化而转码分组。