Wi-Fi Direct

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http://www.wi-fi.org/zh-hans/discover-wi-fi/wi-fi-direct

http://www.wi-fi.org/zh-hans/file/wi-fi-direct-wi-fi-2015

Wi-Fi CERTIFIED Wi-Fi Direct@ 是一种认证项目，用于认证实施了设备间Wi-Fi@ 对等连接的产品，这种连接无需连接接入点。自Wi-Fi Alliance@ 于2010年推出Wi-Fi Direct认证项目以来，Wi-Fi Direct迅速受到用户欢迎，目前已得到2014年出厂的24亿多部设备的支持。在2015年出厂的所有Wi-Fi设备中，将有一半以上的设备支持Wi-Fi Direct。

Wi-Fi Direct的设备与服务发现功能得到了改进，这种功能可用于标准化服务，以优化用户的整体Wi-Fi体验。四种预定义服务，即Wi-Fi Direct Send、Wi-Fi Direct Print、Wi-Fi Direct for DLNA@和Miracast@（一种Wi-Fi CERTIFIED解决方案），都利用这种简化的连接技术支持无线显示功能。Wi-Fi Direct工具集（Toolkit）为第三方开发商提供标准化开发者接口，用于创建未来企业应用。

许多企业都开始研究Wi-Fi Direct的优势，主要将其用于文件分发、打印、无线投影、平板屏幕显示及白板应用。有些企业在企业网络中积极运用Wi-Fi Direct服务，其他企业则对Wi-Fi Direct技术对流量管理和网络安全性的影响进行管理。

Wi-Fi Alliance建议所有企业都评估Wi-Fi Direct与其网络连接与流量的影响，并制定Wi-Fi Direct政策，覆盖两个主要领域：

1. 安全。企业需要根据具体安全要求保护现有的Wi-Fi基础设施流量与设备间Wi-Fi Direct流量，屏蔽非授权设备的潜在进入点。

2. 频谱与网络资源管理。Wi-Fi Direct与基础设施Wi-Fi网络共享频谱资源，企业应在规划新网络、扩展现有网络及管理信道分配时考虑预期中的Wi-Fi Direct流量。

Wi-Fi CERTIFIED Wi-Fi Direct^?是一种认证标志，表示设备间支持Wi-Fi直接互联，帮助用户以更为简单而便捷的方式完成打印、共享、同步和显示等任务。带有Wi-Fi Direct标志的产品可以在不加入传统的家庭、办公或热点网络的情况下互相连接。

利用这种技术，手机、照相机、打印机、个人电脑和游戏设备将能够直接互连，以迅速而轻松的方式传输内容、共享应用。Wi-Fi Direct可以支持一对一直连，也可以实现多台设备同时连接。连接Wi-Fi Direct认证设备的操作简单方便，按下按钮、同时点击两个支持NFC的设备，或输入PIN码这三种方法均可实现连接。此外，所有的Wi-Fi Direct连接都采用WPA2?加密方式，这是Wi-Fi最新的安全技术。通过Wi-Fi Direct，您无需接入点或互联网连接，便可在任何地方享受个人Wi-Fi网络。

预先设定的一系列服务可以让用户轻松地在不同供应商的设备之间发送文件、打印文档、播放媒体文件以及显示屏幕。标准的增强型服务让用户只需一个步骤，即可“发现、连接并操作”，执行这些常见的任务。这一全新的服务平台也为新应用程序带来了创新发展机遇，可以充分利用直接的设备到设备连接所具有的无限优势。

在没有互联网连接的情况下，使用Wi-Fi Direct

通过Wi-Fi Direct认证的设备可用于各类应用，实现内容共享、数据同步、社交、玩游戏、播放音频和视频等所有Wi-Fi设备现在能帮您做的事情，并且更加简单便捷，您也无需四处奔走寻找互联网连接。Wi-Fi Direct认证设备几乎能与您所有的现有Wi-Fi CERTIFIED?设备实现连接。创建一个小组，您只需一个Wi-Fi Direct设备。现在，Wi-Fi不仅仅是一项联网技术，而且还可以连接您和您朋友的Wi-Fi设备，随时随地打造互联生活。

Wi-Fi Direct打造随时随地的网络连接

即使在没有Wi-Fi网络的环境中，Wi-Fi Direct设备也可以随时随地实现互联。Wi-Fi Direct设备向区域内其他设备发出信号，让它们知道可以创建连接。用户可以查看能与之建立连接的设备，发送连接请求，或者也可能收到连接至另一设备的邀请。当两个或两个以上的Wi-Fi Direct-certified设备直接互联，它们便组成了一个Wi-Fi Direct小组，这个小组支持Wi-Fi Protected Setup?并且采用Wi-Fi最新的安全加密方式。

Product Finder Wi-Fi Direct-certified products News See All Wi-Fi Alliance on Future of Wi-Fi, Smart Home Wi-Fi Alliance? "Fifteen for 2015" predictions Industry-driven advances for Wi-Fi Direct? Wi-Fi Alliance? 升级Wi-Fi CERTIFIED Wi-Fi Direct? Wi-Fi CERTIFIED Wi-Fi Direct?已被收入DLNA?可互操作指南 Download Additional Resources

Wi-Fi Peer-to-Peer Services Technical Specification Package v1.2
企业中的Wi Fi Direct?：评估Wi Fi? 对等连接 (2015)
Wi-Fi CERTIFIED Wi-Fi Direct?: 个人便携式 Wi-Fi? ，随时随地连接设备 (2014)
Wi-Fi CERTIFIED Wi-Fi Direct?: 个人便携式Wi-Fi?技术 (2014)

Frequently Asked Questions

What are the pre-defined services for Wi-Fi Direct?
What is the Wi-Fi Direct Toolkit?
How do I communicate using the Wi-Fi Direct trademark?
How is Miracast related to Wi-Fi Direct?
What is the difference between TDLS and Wi-Fi Direct?
If I make a Wi-Fi Direct group with another person, can they see all of the contents of my device?
Do products certified under the Wi-Fi Direct program interoperate with my other Wi-Fi devices?
How does Wi-Fi Alliance help ensure product compatibility and a good user experience for certified products?
How does service discovery work?
What about power management protocols? Are devices implementing the technology behind Wi-Fi Direct a power hog?
Which Wi-Fi Direct-certified device will create and manage the connection?
Can a network based on devices certified under the Wi-Fi Direct program cross connect to an infrastructure network for internet connectivity?
Can all devices start a network based on the specification underlying the Wi-Fi Direct program?
How does security work for Wi-Fi Direct-certified products?
How does the specification underlying the Wi-Fi Direct certification program work?
How far does a Wi-Fi Direct connection travel?
How fast is Wi-Fi Direct?
How many devices can connect?
Does the specification underlying the Wi-Fi Direct certification program work on both frequency bands?
Can a device simultaneously connect to a regular Wi-Fi network and a group of Wi-Fi Direct-certified devices at the same time?

- See more at: http://www.wi-fi.org/zh-hans/discover-wi-fi/wi-fi-direct#sthash.TCyef0rH.dpuf

在没有互联网连接的情况下，使用Wi-Fi Direct

Wi-Fi Direct打造随时随地的网络连接

Wi-Fi Peer-to-Peer Services Technical Specification Package v1.2
企业中的Wi Fi Direct?：评估Wi Fi? 对等连接 (2015)
Wi-Fi CERTIFIED Wi-Fi Direct?: 个人便携式 Wi-Fi? ，随时随地连接设备 (2014)
Wi-Fi CERTIFIED Wi-Fi Direct?: 个人便携式Wi-Fi?技术 (2014)

Frequently Asked Questions

What are the pre-defined services for Wi-Fi Direct?
What is the Wi-Fi Direct Toolkit?
How do I communicate using the Wi-Fi Direct trademark?
How is Miracast related to Wi-Fi Direct?
What is the difference between TDLS and Wi-Fi Direct?
If I make a Wi-Fi Direct group with another person, can they see all of the contents of my device?
Do products certified under the Wi-Fi Direct program interoperate with my other Wi-Fi devices?
How does Wi-Fi Alliance help ensure product compatibility and a good user experience for certified products?
How does service discovery work?
What about power management protocols? Are devices implementing the technology behind Wi-Fi Direct a power hog?
Which Wi-Fi Direct-certified device will create and manage the connection?
Can a network based on devices certified under the Wi-Fi Direct program cross connect to an infrastructure network for internet connectivity?
Can all devices start a network based on the specification underlying the Wi-Fi Direct program?
How does security work for Wi-Fi Direct-certified products?
How does the specification underlying the Wi-Fi Direct certification program work?
How far does a Wi-Fi Direct connection travel?
How fast is Wi-Fi Direct?
How many devices can connect?
Does the specification underlying the Wi-Fi Direct certification program work on both frequency bands?
Can a device simultaneously connect to a regular Wi-Fi network and a group of Wi-Fi Direct-certified devices at the same time?

- See more at: http://www.wi-fi.org/zh-hans/discover-wi-fi/wi-fi-direct#sthash.TCyef0rH.dpuf

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