公开(公告)号：US20040264410A1

公开(公告)日：2004-12-30

申请号：US10610277

申请日：2003-06-30

Applicant: MOTOROLA, INC.

Inventor： Uday C. Sagi ,  Jheroen P. Dorenbosch ,  Anand B. Alen

IPC: H04Q007/00

CPC classification number: H04W36/0005 ,  H04L65/1006 ,  H04W36/14 ,  H04W36/36 ,  H04W80/04 ,  H04W80/10

Abstract: A communication unit (10) includes a mobility agent (225) for providing handoffs between a cellular network and a wireless local area network (11). The communication unit (10) determines if it should switch between the wireless local area network (11) and the cellular network for obtaining service, requests a handoff to the wireless local area network (11) or to the cellular network by sending a SIP message addressed to either a public number (229) or a private number (231) associated with the communication unit (10) upon making the determination. The communication unit (10) accepts a new call from an enterprise server (12) over the determined network. Corresponding methods of providing a hand-off is described.

Abstract translation: 通信单元（10）包括用于在蜂窝网络和无线局域网（11）之间提供切换的移动代理（225）。 通信单元（10）确定是否应该在无线局域网（11）和蜂窝网络之间切换以获得服务，通过发送SIP消息来请求向无线局域网（11）或蜂窝网络的切换 在作出确定时，寻址到与通信单元（10）相关联的公共号码（229）或私人号码（231）。 通信单元（10）通过所确定的网络接受来自企业服务器（12）的新呼叫。 描述提供越区切换的相应方法。