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1. 发明授权

US08116775B2 System and method of providing user equipment initiated and assisted backward handover in heterogeneous wireless networks 有权
标题翻译：在异构无线网络中提供用户设备启动和辅助反向切换的系统和方法
公开(公告)号：US08116775B2
公开(公告)日：2012-02-14
申请号：US12443564
申请日：2007-09-20
申请人： Sung-Ho Choi , O-Sok Song , Rajavelsamy Rajadurai
发明人： Sung-Ho Choi , O-Sok Song , Rajavelsamy Rajadurai
IPC分类号： H04W36/00
CPC分类号： H04W36/36 , H04W36/0066
摘要： The present invention relates to the field of mobility in heterogeneous wireless networks. In particular, the invention proposes a system and method of providing User Equipment (UE) initiated and assisted backward handover in the heterogeneous wireless networks. Depending on certain criteria, the UE may decide that if it needs a handover from a serving network to a target network. The UE initiates the backward handover by sending handover request message to the target network through the serving network. The serving network checks for the capabilities of the UE and authorizes the backward handover. The target network prepares for the backward handover and informs the UE when the target network is ready. The UE then starts the handover procedure.
摘要翻译：本发明涉及异构无线网络中的移动性领域。特别地，本发明提出了一种在异构无线网络中提供用户设备（UE）发起和辅助的反向切换的系统和方法。根据某些标准，UE可以决定是否需要从服务网络到目标网络的切换。 UE通过服务网络向目标网络发送切换请求消息来发起向后切换。服务网络检查UE的能力并授权向后切换。目标网络准备反向切换，并且当目标网络准备就绪时通知UE。然后，UE开始切换过程。

2. 发明申请

US20100190500A1 SYSTEM AND METHOD OF PROVIDING USER EQUIPMENT INITIATED AND ASSISTED BACKWARD HANDOVER IN HETEROGENEOUS WIRELESS NETWORKS 有权
标题翻译：在异质无线网络中提供用户设备启动和辅助后向切换的系统和方法
公开(公告)号：US20100190500A1
公开(公告)日：2010-07-29
申请号：US12443564
申请日：2007-09-20
申请人： Sung-Ho Choi , O-Sok Song , Rajavelsamy Rajadurai
发明人： Sung-Ho Choi , O-Sok Song , Rajavelsamy Rajadurai
IPC分类号： H04W36/00
CPC分类号： H04W36/36 , H04W36/0066
摘要： The present invention relates to the field of mobility in heterogeneous wireless networks. In particular, the invention proposes a system and method of providing User Equipment (UE) initiated and assisted backward handover in the heterogeneous wireless networks. Depending on certain criteria, the UE may decide that if it needs a handover from a serving network to a target network. The UE initiates the backward handover by sending handover request message to the target network through the serving network. The serving network checks for the capabilities of the UE and authorizes the backward handover. The target network prepares for the backward handover and informs the UE when the target network is ready. The UE then starts the handover procedure.
摘要翻译：本发明涉及异构无线网络中的移动性领域。特别地，本发明提出了一种在异构无线网络中提供用户设备（UE）发起和辅助的反向切换的系统和方法。根据某些标准，UE可以决定是否需要从服务网络到目标网络的切换。 UE通过服务网络向目标网络发送切换请求消息来发起向后切换。服务网络检查UE的能力并授权向后切换。目标网络准备反向切换，并且当目标网络准备就绪时通知UE。然后，UE开始切换过程。

3. 发明授权

US08910271B2 System and method for handover between interworking WLAN and EUTRAN access systems 有权
标题翻译：互通WLAN与EUTRAN接入系统之间切换的系统和方法
公开(公告)号：US08910271B2
公开(公告)日：2014-12-09
申请号：US13635213
申请日：2006-10-27
申请人： Rajavelsamy Rajadurai , Venkateswar Jeedigunta , Rahul Suhas Vaidya , O-Sok Song , Sung-Ho Choi
发明人： Rajavelsamy Rajadurai , Venkateswar Jeedigunta , Rahul Suhas Vaidya , O-Sok Song , Sung-Ho Choi
IPC分类号： H04L29/06 , H04W36/00 , H04W88/06 , H04W12/06
CPC分类号： H04L63/0892 , H04W12/06 , H04W36/0022 , H04W36/0038 , H04W36/14 , H04W84/12 , H04W88/06
摘要： This invention relates to the area of Mobility and Handover between heterogeneous wireless networks. The scope of the invention also covers the case when the UE is capable of accessing both the WLAN and EUTRAN access systems simultaneously and also the case where the UE is not capable of accessing both the WLAN and EUTRAN access systems simultaneously. This invention provides a system and method to perform Mobility between the access systems with optimized authentication procedure using security context transfer between the access systems and also minimize the data loss by buffering the data during the handover. More specifically, this invention provides a system and method to support handover between the I-WLAN and the EUTRAN access systems.
摘要翻译：本发明涉及异构无线网络之间的移动和切换的领域。本发明的范围还涵盖了UE能够同时访问WLAN和EUTRAN接入系统两者的情况，还涉及UE不能同时接入WLAN和EUTRAN接入系统的情况。本发明提供了一种使用优化的认证过程在接入系统之间执行移动性的系统和方法，该接入系统使用接入系统之间的安全上下文传输，并且还通过在切换期间缓冲数据来最小化数据丢失。更具体地，本发明提供了支持I-WLAN和EUTRAN接入系统之间的切换的系统和方法。

4. 发明授权

US08462742B2 System and method for optimizing authentication procedure during inter access system handovers 有权
标题翻译：在互访系统切换期间优化认证过程的系统和方法
公开(公告)号：US08462742B2
公开(公告)日：2013-06-11
申请号：US11732202
申请日：2007-04-02
申请人： O-Sok Song , Rajavelsamy Rajadurai , Jedigunta Venkateshwar
发明人： O-Sok Song , Rajavelsamy Rajadurai , Jedigunta Venkateshwar
IPC分类号： H04W4/00 , H04W36/00
CPC分类号： H04W36/0016 , H04L63/08 , H04W12/04 , H04W12/06 , H04W36/14
摘要： Disclosed is a method and system of deriving new keys for accessing a new system. The method enables an optimized authentication procedure during handover form an existing system to a new system by using the existing system access keys. The user equipment that is accessing the new system receives a temporary ID during handover preparation which enables the user equipment to perform a fast re-authentication. The method uses existing system access keys to derive system access keys for the new network.
摘要翻译：公开了一种导出用于访问新系统的新密钥的方法和系统。该方法通过使用现有的系统访问密钥使得在切换期间的优化认证过程成为现有系统到新系统。正在接入新系统的用户设备在切换准备期间接收临时ID，使得用户设备能够进行快速重新认证。该方法使用现有的系统访问密钥来导出新网络的系统访问密钥。

5. 发明申请

US20070249352A1 System and method for optimizing authentication procedure during inter access system handovers 有权
标题翻译：在互访系统切换期间优化认证过程的系统和方法
公开(公告)号：US20070249352A1
公开(公告)日：2007-10-25
申请号：US11732202
申请日：2007-04-02
申请人： O-Sok Song , Rajavelsamy Rajadurai , Jedigunta Venkateshwar
发明人： O-Sok Song , Rajavelsamy Rajadurai , Jedigunta Venkateshwar
IPC分类号： H04Q7/20
CPC分类号： H04W36/0016 , H04L63/08 , H04W12/04 , H04W12/06 , H04W36/14
摘要： Disclosed is a method and system of deriving new keys for accessing a new system. The method enables an optimized authentication procedure during handover form an existing system to a new system by using the existing system access keys. The user equipment that is accessing the new system receives a temporary ID during handover preparation which enables the user equipment to perform a fast re-authentication. The method uses existing system access keys to derive system access keys for the new network.
摘要翻译：公开了一种导出用于访问新系统的新密钥的方法和系统。该方法通过使用现有的系统访问密钥使得在切换期间的优化认证过程成为现有系统到新系统。正在接入新系统的用户设备在切换准备期间接收临时ID，使得用户设备能够进行快速重新认证。该方法使用现有的系统访问密钥来导出新网络的系统访问密钥。

6. 发明授权

US08681625B2 Method and apparatus for controlling rate of voice service in a mobile communication system supporting voice service via packet network 有权
标题翻译：在通过分组网络支持语音服务的移动通信系统中控制语音服务速率的方法和装置
公开(公告)号：US08681625B2
公开(公告)日：2014-03-25
申请号：US12659168
申请日：2010-02-26
申请人： Soeng-Hun Kim , Sung-Ho Choi , Gert-Jan Van Lieshout , Himke Van Der Velde , O-Sok Song , No-Jun Kwak , Kyeong-In Jeong
发明人： Soeng-Hun Kim , Sung-Ho Choi , Gert-Jan Van Lieshout , Himke Van Der Velde , O-Sok Song , No-Jun Kwak , Kyeong-In Jeong
IPC分类号： G01R31/08
CPC分类号： H04W72/0406 , H04L29/06027 , H04L65/80 , H04W88/181
摘要： A method for controlling a rate of a voice service in a mobile communication system supporting the voice service via a packet network. The method includes the steps of receiving a control message at a terminal from a radio network controller (RNC); if the control message indicates control of a downlink rate, determining a downlink rate according to the control message; setting a Change Mode Request (CMR) field of an uplink Voice over Internet Protocol (VoIP) packet according to the downlink rate, and transmitting the uplink VoIP packet from the terminal to the RNC; if the received control message indicates control of an uplink rate, determining an uplink rate according to the control message; and generating an uplink VoIP packet including uplink voice data generated according to the determined uplink rate and frame type (FT) information indicating the determined uplink rate, and transmitting the uplink VoIP packet from the terminal to the RNC.
摘要翻译：一种用于在经由分组网络支持语音服务的移动通信系统中控制语音服务的速率的方法。该方法包括以下步骤：在终端从无线网络控制器（RNC）接收控制消息; 如果所述控制消息指示下行链路速率的控制，则根据所述控制消息确定下行链路速率; 根据下行速率设置上行语音上网语音（VoIP）分组的变化模式请求（CMR）字段，并从终端向RNC发送上行VoIP分组; 如果所接收的控制消息指示对上行链路速率的控制，则根据控制消息确定上行链路速率; 以及生成包括根据所确定的上行链路速率生成的上行链路语音数据和指示所确定的上行链路速率的帧类型（FT）信息的上行链路VoIP分组，以及将所述上行链路VoIP分组从所述终端发送到所述RNC。

7. 发明授权

US08565772B2 Handover apparatus and method in a heterogeneous wireless communication system 有权
标题翻译：异构无线通信系统中的切换装置和方法
公开(公告)号：US08565772B2
公开(公告)日：2013-10-22
申请号：US12053825
申请日：2008-03-24
申请人： Eun-Hui Bae , Sung-Ho Choi , O-Sok Song , Tae-Sun Yeoum , Han-Na Lim , Jai-Yong Lee , Hyun-Duk Jung , Kyung-Min Kim
发明人： Eun-Hui Bae , Sung-Ho Choi , O-Sok Song , Tae-Sun Yeoum , Han-Na Lim , Jai-Yong Lee , Hyun-Duk Jung , Kyung-Min Kim
IPC分类号： H04W36/00
CPC分类号： H04W36/30 , H04W36/0022 , H04W36/0033 , H04W80/10 , H04W88/06
摘要： Provided is a handover method, in which a call manager of a network having a Circuit Switching (CS) network, a Long Term Evolution (LTE) network, and an Internet Protocol Multimedia Subsystem (IMS) network, provides handover, from the LTE network to the CS network, to a terminal that uses one radio channel. The handover method includes upon receiving a request for handover from the terminal via a node of the LTE network, establishing a line to a Mobile Switching Center (MSC) of the CS network; sending, to the call manager, a request for a change in a session to another party's terminal in communication with the terminal, to establish an Internet Protocol (IP) bearer between the call manager and the other party's terminal; and sending a handover command to the terminal during the establishment of an IP bearer, to establish a radio channel to the base station of the CS network.
摘要翻译：提供了一种切换方法，其中具有电路交换（CS）网络，长期演进（LTE）网络和因特网协议多媒体子系统（IMS）网络的网络的呼叫管理器从LTE网络提供切换到CS网络，到使用一个无线电信道的终端。切换方法包括：经由LTE网络的节点从终端接收到切换请求，建立到CS网络的移动交换中心（MSC）的线路; 向所述呼叫管理器发送对与所述终端通信的另一方的终端的会话改变的请求，以在所述呼叫管理器与所述另一方的终端之间建立因特网协议（IP）承载; 以及在建立IP承载期间向终端发送切换命令，以建立到CS网络的基站的无线电信道。

8. 发明授权

US08335197B2 Method and apparatus for transmitting SIP data of idle mode UE in a mobile communication system 有权
标题翻译：用于在移动通信系统中发送空闲模式UE的SIP数据的方法和装置
公开(公告)号：US08335197B2
公开(公告)日：2012-12-18
申请号：US12160166
申请日：2007-01-04
申请人： Kyeong-In Jeong , Himke Van Der Velde , Sung-Ho Choi , Soeng-Hun Kim , O-Sok Song , No-Jun Kwak , Gert Jan Van Lieshout
发明人： Kyeong-In Jeong , Himke Van Der Velde , Sung-Ho Choi , Soeng-Hun Kim , O-Sok Song , No-Jun Kwak , Gert Jan Van Lieshout
IPC分类号： H04W4/00
CPC分类号： H04W76/10 , H04L65/1016 , H04W72/1284 , H04W80/10
摘要： A method and apparatus are provided for transmitting a Session Initiation Protocol (SIP) message by a User Equipment (UE) in an idle mode in an Internet Protocol Multimedia Subsystem (IMS) system. The UE transmits one combined message of an AS control message and a NAS control message including information indicating transmission of an SIP message, thereby having an effect on an upper node to reduce a delay due to message processing.
摘要翻译：提供了一种用于在因特网协议多媒体子系统（IMS）系统中以空闲模式由用户设备（UE）发送会话发起协议（SIP）消息的方法和装置。 UE发送AS控制消息的一个组合消息和包括指示SIP消息的传输的信息的NAS控制消息，从而对上层节点具有影响，以减少由于消息处理引起的延迟。

9. 发明授权

US08325708B2 Method and apparatus for interworking voice and multimedia services between CSI terminal and IMS terminal 有权
标题翻译： CSI终端与IMS终端之间语音和多媒体业务互通的方法和装置
公开(公告)号：US08325708B2
公开(公告)日：2012-12-04
申请号：US11496712
申请日：2006-08-01
申请人： Han-Na Lim , O-Sok Song , Sung-Ho Choi , Eun-Hui Bae , Tae-Sun Yeoum
发明人： Han-Na Lim , O-Sok Song , Sung-Ho Choi , Eun-Hui Bae , Tae-Sun Yeoum
IPC分类号： H04L12/66
CPC分类号： H04W76/02 , H04L29/06027 , H04L65/1016 , H04L65/1069 , H04M7/006 , H04W76/10 , H04W76/15 , H04W88/14 , H04W92/02
摘要： A method and apparatus is provided for communication between a first terminal capable of using both a Circuit Switched (CS) call and an Internet Protocol Multimedia Subsystem (IMS) session, and a second terminal capable of using the IMS session, in a communication system supporting a Combined CS call and IMS session (CSI service). If the second terminal sends a Session Initiation Protocol (SIP) request (INVITE) message to originate a voice service or a multimedia service including the voice service with the first terminal, a CSI Application Server (AS) of an IMS domain managing the first terminal separates a voice service-related component included in the request message from a multimedia service-related component, and generates and sends first and second request messages to the first terminal. Upon receipt of first and second response messages corresponding to the first and second request messages from the first terminal, the CSI AS generates a combined response message and sends the combined response message to the second terminal.
摘要翻译：提供一种方法和装置，用于在能够使用电路交换（CS）呼叫和因特网协议多媒体子系统（IMS）会话的第一终端和能够使用IMS会话的第二终端之间进行通信，所述通信系统支持组合CS呼叫和IMS会话（CSI服务）。如果第二终端发送会话发起协议（SIP）请求（INVITE）消息以产生包括与第一终端的语音服务的语音服务或多媒体服务，则管理第一终端的IMS域的CSI应用服务器（AS）将包括在请求消息中的语音服务相关组件与多媒体业务相关组件分离，并产生并向第一终端发送第一和第二请求消息。在接收到来自第一终端的与第一和第二请求消息对应的第一和第二响应消息时，CSI AS生成组合的响应消息，并将组合的响应消息发送到第二终端。

10. 发明授权

US08260297B2 Method and apparatus for performing uplink timing synchronization procedure upon handover in a mobile communication system 有权
标题翻译：用于在移动通信系统中切换时执行上行链路定时同步过程的方法和装置
公开(公告)号：US08260297B2
公开(公告)日：2012-09-04
申请号：US11704422
申请日：2007-02-09
申请人： Kyeong-In Jeong , Sung-Ho Choi , Ju-Ho Lee , O-Sok Song , Gert-Jan Van Lieshout , Himke Van Dervelde
发明人： Kyeong-In Jeong , Sung-Ho Choi , Ju-Ho Lee , O-Sok Song , Gert-Jan Van Lieshout , Himke Van Dervelde
IPC分类号： H04W36/00
CPC分类号： H04W56/0005 , H04B7/2681 , H04W36/08
摘要： An efficient uplink timing synchronization procedure performed with a target cell upon handover of a User Equipment (UE) in active mode in a mobile communication system is provided, in which a cell transmitter signals to the UE that the uplink timing synchronization procedure is not required in the target cell, and the UE carries out uplink transmission to the target cell at an uplink timing used in a source cell without the uplink timing synchronization procedure.
摘要翻译：提供了一种在移动通信系统中在用户设备（UE）以活动模式切换时与目标小区执行的有效的上行链路定时同步过程，其中小区发射机向UE指示上行链路定时同步过程不需要目标小区，并且UE在源小区中使用的上行链路定时不执行上行链路定时同步过程的情况下，向目标小区进行上行链路传输。

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