发明名称 |
METHOD AND APPARATUS FOR PACKET DATA SERVICE DISCOVERY |
摘要 |
A method and apparatus for packet data service discovery are described. A current blacklist comprising entries for wireless networks not providing packet data services (i.e. either not supporting the services or not having a packet data services roaming agreement) is kept in memory of the mobile device based on previous attempts to connect to such networks. Current preferred roaming lists identify whether a given wireless network can be acquired, but do not identify whether a data services roaming agreement exists. At least one of the following advantages is provided: no advance knowledge of data services roaming agreements is required; no mobile device software change is required when the data services roaming agreement changes; mobile device can notify a server of a wireless network status change; significant power savings at the mobile device; and avoid unnecessary network access, which in turn saves network resources and capacity. |
申请公布号 |
CA2504803(C) |
申请公布日期 |
2012.12.11 |
申请号 |
CA20032504803 |
申请日期 |
2003.06.23 |
申请人 |
RESEARCH IN MOTION LIMITED |
发明人 |
HOSSAIN, ASIF;ISLAM, M. KHALEDUL |
分类号 |
H04W48/16;H04L29/06;H04L29/08;H04W4/00;H04W12/06;H04W48/18;H04W88/02 |
主分类号 |
H04W48/16 |
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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