发明申请
- 专利标题: Range extension between two wireless devices
- 专利标题(中): 两个无线设备之间的范围扩展
-
申请号: US11193875申请日: 2005-07-29
-
公开(公告)号: US20070025388A1公开(公告)日: 2007-02-01
- 发明人: Abhishek Abhishek , Amer Hassan , Christian Huitema , Jiandong Ruan , Poovanpilli Madhavan
- 申请人: Abhishek Abhishek , Amer Hassan , Christian Huitema , Jiandong Ruan , Poovanpilli Madhavan
- 申请人地址: US WA Redmond
- 专利权人: Microsoft Corporation
- 当前专利权人: Microsoft Corporation
- 当前专利权人地址: US WA Redmond
- 主分类号: H04L12/413
- IPC分类号: H04L12/413
摘要:
A mechanism is provided to extend the range of wireless devices beyond the range limit that results from timing restrictions imposed by the IEEE 802.11 standard. The mechanism, which operates at the upper level of the 802.11 MAC, determines whether the wireless devices are far apart or not far apart. When the wireless devices are determined to be far apart, the standard retransmission protocol at the lower level of the 802.11 MAC is disabled and a custom ACK packet is utilized. Delivery of a transmitted packet is confirmed if the custom ACK packet is received within a maximum delay period that takes into account the longer propagation delay between wireless devices that are far apart.
公开/授权文献
- US07483412B2 Range extension between two wireless devices 公开/授权日:2009-01-27