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. |
申请公布号 |
AU2007246111(B2) |
申请公布日期 |
2010.12.02 |
申请号 |
AU20070246111 |
申请日期 |
2007.04.27 |
申请人 |
RESEARCH IN MOTION LIMITED |
发明人 |
TERENCE D. TODD;VYTAUTAS ROBERTAS KEZYS |
分类号 |
H04L12/28;H04L12/66;H04L29/02;H04M11/06;H04W36/14;H04W76/02;H04W84/12;H04W92/18 |
主分类号 |
H04L12/28 |
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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