发明授权
- 专利标题: Method and apparatus for packet data service discovery
- 专利标题(中): 分组数据业务发现的方法和装置
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申请号: US10533957申请日: 2003-06-23
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公开(公告)号: US07701872B2公开(公告)日: 2010-04-20
- 发明人: Khaledul M. Islam , Asif Hossain
- 申请人: Khaledul M. Islam , Asif Hossain
- 申请人地址: CA Waterloo, Ontario
- 专利权人: Research In Motion Limited
- 当前专利权人: Research In Motion Limited
- 当前专利权人地址: CA Waterloo, Ontario
- 代理机构: Borden Ladner Gervais LLP
- 代理商 Curtis B. Behmann
- 国际申请: PCT/CA03/00955 WO 20030623
- 国际公布: WO2004/043098 WO 20040521
- 主分类号: H04L12/28
- IPC分类号: H04L12/28 ; H04W4/00
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.
公开/授权文献
- US20060104211A1 Method and apparatus for packet data service discovery 公开/授权日:2006-05-18