发明名称 |
WLAN And WWAN Connection Migration Methods And Apparatus |
摘要 |
Intra-enterprise wireless handset (WH) calls between WHs operating in a wireless local area network (WLAN) are established directly between the WHs via a call connection that is maintained within the LAN without being routed through the cellular network (CN). This eliminates the cost of placing and maintaining calls through the CN for intra-enterprise calls, and also enables use of capabilities that are available in the enterprise telecomm equipment. Upon detection of a trigger condition, if and when it is more likely that a complete vertical handover (VHO) may be needed, the call connection between the WHs in the LAN is replaced by one that is routed through the CN. Thereafter, a VHO may occur (if at all) upon detection of a radio handover condition.
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申请公布号 |
US2007265003(A1) |
申请公布日期 |
2007.11.15 |
申请号 |
US20070741028 |
申请日期 |
2007.04.27 |
申请人 |
RESEARCH IN MOTION LIMITED;MCMASTER UNIVERSITY |
发明人 |
KEZYS VYTAUTAS R.;TODD TERENCE D. |
分类号 |
H04W36/14;H04W76/02;H04W84/12;H04W92/18 |
主分类号 |
H04W36/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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