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    Method and apparatus in a wireless communication system for facilitating a handoff
    1.
    发明授权
    Method and apparatus in a wireless communication system for facilitating a handoff 有权
    无线通信系统中的便利切换的方法和装置

    公开(公告)号：US07155225B2

    公开(公告)日：2006-12-26

    申请号：US10652125

    申请日：2003-08-29

    申请人： Niranjan N. Segal ,  Anatoly S. Belkin ,  Alex P. Hirsbrunner ,  Ajaykumar Idnani ,  Jennifer Pierce

    发明人： Niranjan N. Segal ,  Anatoly S. Belkin ,  Alex P. Hirsbrunner ,  Ajaykumar Idnani ,  Jennifer Pierce

    IPC分类号： H04Q7/20

    CPC分类号： H04W36/0011 ,  H04W8/26 ,  H04W36/14 ,  H04W36/18 ,  H04W76/20 ,  H04W84/12 ,  H04W88/06

    摘要： A dual-band wireless subscriber unit (SU) (112) having an enterprise address of E1 and a cellular address of C1, corresponding method (200), software program (310–320), and WLAN (104) determines (202) that the SU is about to leave a wireless local area network (WLAN) (104). In response, when the SU is involved in a call on E1, the SU sends (212, 208) to the WLAN a SIP message, for example a Refer message with a “Refer To” field of C1 if an ongoing call or a SIP Redirect message with a contact address of C1 if a new call is attempting to begin on E1. In response to receiving either message, the WLAN seamlessly transfers (210, 214) the call to C1.

    摘要翻译： 具有E 1的企业地址和C 1的蜂窝地址，相应的方法（200），软件程序（310-320）和WLAN（104）的双频无线用户单元（112）确定（202） ）SU即将离开无线局域网（WLAN）（104）。 作为响应，当SU参与到E 1上的呼叫时，SU将（212,208）向SIP发送SIP消息，例如具有C 1的“参考”字段的Refer消息，如果正在进行的呼叫或 如果新呼叫试图在E 1上开始，则具有C 1的联系人地址的SIP重定向消息。 响应于接收到任一消息，WLAN无缝地将呼叫转移（210,214）到C 1。

    Prevention of call forwarding loops in communication networks
    3.
    发明申请
    Prevention of call forwarding loops in communication networks 有权
    防止通信网络中的呼叫转移环路

    公开(公告)号：US20050111649A1

    公开(公告)日：2005-05-26

    申请号：US10720858

    申请日：2003-11-24

    申请人： Anatoly Belkin ,  Alex Hirsbrunner ,  Jennifer Pierce ,  Jheroen Dorenbosch

    发明人： Anatoly Belkin ,  Alex Hirsbrunner ,  Jennifer Pierce ,  Jheroen Dorenbosch

    IPC分类号： H04M3/533 ,  H04M3/54 ,  H04M3/42 ,  H04M7/00 ,  H04Q7/20

    CPC分类号： H04M3/54 ,  H04M3/53308 ,  H04M3/545

    摘要： Circular call forwarding loops are prevented for a communications unit (12) capable of operating in a first communications network (14) and a second communications network (16) within a loosely coupled network (16), and respectively having a first network number and a second network number, as well as a first network voice mail. A call directed to the first network number (50) of the communications unit is forwarded to the second network number (52) of the communications unit when the communications unit is not operating in the first network. A first network voice mail number (P3) may be associated with calls so that calls are forwarded directly to the first network voice mail (56) when received again at the first network (54). Alternatively, if a call is subsequently received from the second communications network, and data of the subsequently received call matches data of the initial call, or if call forwarding indicia associated with the forwarded call is also associated with the subsequent call, the subsequent call is then forwarded to the first network voice mail of the communications unit.

    摘要翻译： 对于能够在松散耦合网络（16）内的第一通信网络（14）和第二通信网络（16）中运行的通信单元（12），并且分别具有第一网络号码和 第二个网络号码，以及第一个网络语音邮件。 当通信单元不在第一网络中操作时，定向到通信单元的第一网络号码（50）的呼叫被转发到通信单元的第二网络号码（52）。 第一网络语音邮件号码（P 3）可以与呼叫相关联，使得当在第一网络（54）再次接收时，呼叫被直接转发到第一网络语音邮件（56）。 或者，如果随后从第二通信网络接收到呼叫，并且随后接收到的呼叫的数据与初始呼叫的数据匹配，或者如果与转发呼叫相关联的呼叫转移标记也与后续呼叫相关联，则后续呼叫 然后转发到通信单元的第一个网络语音邮件。