发明申请
- 专利标题： ACCESS POINT AND METHODS FOR DISTINGUISHING HEW PHYSICAL LAYER PACKETS WITH BACKWARDS COMPATIBILITY
- 专利标题（中）： 用于辨别具有背景兼容性的物理层包的接入点和方法
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申请号： US14304041申请日： 2014-06-13
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公开(公告)号： US20150139205A1公开(公告)日： 2015-05-21
- 发明人: Thomas J. Kenney , Eldad Perahia , Shahrnaz Azizi
- 申请人： Thomas J. Kenney , Eldad Perahia , Shahrnaz Azizi
- 主分类号： H04W16/14
- IPC分类号： H04W16/14 ; H04W28/06
摘要：
Embodiments of a system and methods for distinguishing high-efficiency Wi-Fi (HEW) packets from legacy packets are generally described herein. In some embodiments, an access point may select a value for the length field of a legacy signal field (L-SIG) that is non-divisible by three for communicating with HEW stations and may select a value for the length field that is divisible by three for communicating with legacy stations. In some embodiments, the access point may select a phase rotation for application to the BPSK modulation of at least one of the first and second symbols of a subsequent signal field to distinguish a high-throughput (HT) PPDU, a very-high throughput (VHT) PPDU and an HEW PPDU.