发明名称 |
TRANSPONDER SUBSYSTEM FOR SUPPORTING LOCATION AWARENESS IN WIRELESS NETWORKS |
摘要 |
The present invention is related to an apparatus and method for determining the location of a communication device within a wireless network in order to provide a geolocation functionality to the communication device participating under an access protocol of a wireless local-area network (WLAN) infrastructure such as IEEE 802.11 or Hiperlan. The apparatus comprises at least two transponder units for communicating with the communication device when the communication device is situated in a coverage area of the wireless network and a processing unit for deriving the location of the communication device within the coverage area in dependence on information received from the transponder units.
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申请公布号 |
KR20050032095(A) |
申请公布日期 |
2005.04.06 |
申请号 |
KR20057000732 |
申请日期 |
2005.01.14 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION. |
发明人 |
GFELLER, FRITZ;HIRT, WALTER |
分类号 |
G01S19/48;H04L12/28;H04W64/00;(IPC1-7):H04L12/28 |
主分类号 |
G01S19/48 |
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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