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安卓系统下关于 WiFi -Direct 的研究 PowerPoint PPT Presentation


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安卓系统下关于 WiFi -Direct 的研究. 姓名:龚强 学 号: 10274003 班级:思源 1001 指导老师:陈一帅. 1. 2. 3. 4. Wifi -direct 的介绍. WiFi -Direct 与快传、蓝牙等的比较. WiFi -Direct 在多人通信时存在的问题. 解决多人通信问题的中间件. Contents. WiFi -Direct 的拓扑结构. Wifi -direct 扫描过程. Wifi -direct 的服务发现过程. Wifi -direct 的小组建立过程.

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安卓系统下关于 WiFi -Direct 的研究

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Wifi direct

安卓系统下关于WiFi-Direct的研究

  • 姓名:龚强

  • 学号:10274003

  • 班级:思源1001

  • 指导老师:陈一帅


Contents

1

2

3

4

Wifi-direct的介绍

WiFi-Direct与快传、蓝牙等的比较

WiFi-Direct在多人通信时存在的问题

解决多人通信问题的中间件

Contents

Company Logo


Wifi direct1

WiFi-Direct的拓扑结构


Wifi direct2

Wifi-direct扫描过程


Wifi direct3

Wifi-direct的服务发现过程


Wifi direct4

Wifi-direct的小组建立过程


Wifi direct5

WiFi-Direct与茄子快传在待机功耗上的比较


Wifidirect

WiFiDirect与蓝牙、茄子快传在传输速度上的比较

  • 使用这3种方式传输同一段13M视频的耗时对比


Wifi direct6

WiFi-Direct在多人通信场景下的问题

GroupOwner

IP:192.168.49.1

Peer3

Peer2

Peer1


Wifi direct

中间件的设计

  • 当设备成立或加入小组则给GO发送自己的MAC地址

GroupOwner

Mac3

Peer3

Mac1

Mac2

Peer1

Peer2


Go mac ip

GO分发当前组内成员MAC/IP映射表

  • 每当GO收到MAC即更新映射表然后分发给组员

GroupOwner

jsonlist

Peer3

MAC:XX:XX:XX:XX:XX:XX, IP:192.168.49.xxx; …..

jsonlist

jsonlist

Peer1

Peer2


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