文档介绍：北京惠捷朗科技有限公司 WLAN 技术交流本文由 2影视网整理发布 Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. 标准演变 Mesh 扩展 QoS 扩展安全扩展射频管理更高的速率基于的标准演化 Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. 基于 CAPWAP 的WLAN 运营网络 WLAN MAC : Split MAC 、 Local MAC 数据转发:集中转发、本地转发组网方式: 2层组网, 3层组网管理和状态:协议预定义、厂家私有 Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. WLAN 相关新技术? Wi-Fi Direct ? Wi-Fi Display ?超低功耗 Wi-Fi ? Wireless protect setup ( WPS ) ? Wi-Fi 热点认证计划 Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. WLAN 空口性能 2 1 WLAN 连接管理机制 WLAN 与室分合路 34 WLAN 抓包分析案例 Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. 扫描与关联?扫描的过程是识别当前空间存在的 WLAN 无线网络。?扫描中主要的参数: BSStype 、 DSSID 、 SSID 、扫描方式、信道列表、探测延时、最大和最小信道时间?关联是 STA 和 AP 建立连接的过程 Station AP1 AP2 被动扫描:侦听 Beacon 主动扫描: Probe request 连接过程: ?STA 对发 Probe Requset ?AP发Probe response Sta 选择 AP ?Station 发Association request ?AP回应 Association Respones 封包告知 STA 取得 AID 被动扫描:侦听 Beacon 主动扫描: Probe request 连接过程: ?STA 对发 Probe Requset ?AP发Probe response Sta 选择 AP ?Station 发Association request ?AP回应 Association Respones 封包告知 STA 取得 AID Reass