发明授权
- 专利标题: Fine-grained channel access in wireless networks
- 专利标题(中): 无线网络中的细粒度通道接入
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申请号: US12824104申请日: 2010-06-25
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公开(公告)号: US09445432B2公开(公告)日: 2016-09-13
- 发明人: Kun Tan , Jiansong Zhang , Yongguang Zhang , Ji Fang
- 申请人: Kun Tan , Jiansong Zhang , Yongguang Zhang , Ji Fang
- 申请人地址: US WA Redmond
- 专利权人: Microsoft Technology Licensing, LLC
- 当前专利权人: Microsoft Technology Licensing, LLC
- 当前专利权人地址: US WA Redmond
- 代理商 Sandy Swain; Micky Minhas
- 主分类号: H04W74/08
- IPC分类号: H04W74/08 ; H04L27/26 ; H04W72/00 ; H04W72/04 ; H04W84/12
摘要:
A fine-grained channel access system and method to facilitate fine-grained channel access in a high-data rate wide-band wireless local-area network (WLAN). Embodiments of the system and method divide an entire wireless channel into proper size subchannels commensurate with the physical layer data rate and typical frame size. Once the subchannels are defined, each node on the WLAN contends independently for each of the fine-grained subchannels. A first orthogonal frequency-division multiplexing (OFDM) technique is used to signal an access point on the WLAN that the node desires one or more of the subchannels. A second OFDM technique (which is different from the first OFDM technique) is used for data transmission. Sometimes there is contention between nodes that want the same subchannel. The access point resolves any contention between the nodes using a frequency domain contention technique that includes a frequency domain backoff technique.
公开/授权文献
- US20110317633A1 FINE-GRAINED CHANNEL ACCESS IN WIRELESS NETWORKS 公开/授权日:2011-12-29