WiFi Direct用在无限播放中的前景如何？

[Ollie]

如果09那么大的东西里面能实现WiFi Direct连接电脑和手机，大耳也可以移动了。

耗电比蓝牙多很多吗？蓝牙实现无损传输音频，看不到希望啊。

WiFi Direct: https://baike.baidu.com/item/Wi-Fi%20Direct/6311824

[客服六号]

wifi直连的问题在于，你使用了Wifi直连就没法上网了。

这个比蓝芽还没有应用前景。

[Ollie]

是这样啊，我还以为WiFi和WiFi Direct是两种不同的标准，就像WiFi和Bluetooth。不过从下面的引文看，好像是这样啊。

与室外无热点的状况不同，在企业环境中，原本建设了大量的有线网络和无线网络，Wi-Fi Direct设备需要与原有网络融合。事实上，Wi-Fi Direct提供了并发机制，设备可以在加入小组的同时，保持WLAN基础设施连接（如图2），这台接入多个网络的Wi-Fi Direct设备被称之为并发设备。可由一部无线设备为并发连接提供支持，并发设备也可支持不同信道的连接，同时参与多个小组。并发运行要求支持多个不同的MAC实体，其中一个实体用于WLAN站点运行，一个则作为Wi-Fi Direct设备运行。MAC实体并不要求必须是物理实体，也可以是包含两个虚拟MAC实体的单一物理层实体。

Q：1个装置是否能够同时连结至一般Wi-Fi网络以及其它支持Wi-Fi Direct装置？
A：所有通过Wi-Fi Direct认证的装置都可以支持一般Wi-Fi或是Wi-Fi Direct联机。由于同时支持一般Wi-Fi以及Wi-Fi Direct是选择性的功能，因此不一定所有的装置都具备这样的功能。

来源：https://blog.csdn.net/gjsisi/article/details/7774002

wi-fi.org网站的回答：

Can a device simultaneously connect to a regular Wi-Fi network and a group of Wi-Fi Direct-certified devices at the same time?

All devices certified under the Wi-Fi Direct program allow the user to connect to an infrastructure or a Wi-Fi Direct-certified network. Some devices certified under the Wi-Fi Direct program support connections to both an infrastructure network and Wi-Fi Direct-certified group at the same time (e.g. a laptop may support an infrastructure connection while also belonging to a Wi-Fi Direct-certified group). Simultaneous connection to a Wi-Fi Direct-certified group and an infrastructure network is an optional feature.

来源：https://www.wi-fi.org/knowledge-center/ ... a-group-of

而且貌似已经有实现的：

Can WIFI direct and WIFI station work simultaneously? https://stackoverflow.com/questions/155 ... ltaneously

[Ollie]

是这样啊，我还以为WiFi和WiFi Direct可以同时连接。不过从下面的引文看，好像是这样啊。

与室外无热点的状况不同，在企业环境中，原本建设了大量的有线网络和无线网络，Wi-Fi Direct设备需要与原有网络融合。事实上，Wi-Fi Direct提供了并发机制，设备可以在加入小组的同时，保持WLAN基础设施连接（如图2），这台接入多个网络的Wi-Fi Direct设备被称之为并发设备。可由一部无线设备为并发连接提供支持，并发设备也可支持不同信道的连接，同时参与多个小组。并发运行要求支持多个不同的MAC实体，其中一个实体用于WLAN站点运行，一个则作为Wi-Fi Direct设备运行。MAC实体并不要求必须是物理实体，也可以是包含两个虚拟MAC实体的单一物理层实体。

Q：1个装置是否能够同时连结至一般Wi-Fi网络以及其它支持Wi-Fi Direct装置？
A：所有通过Wi-Fi Direct认证的装置都可以支持一般Wi-Fi或是Wi-Fi Direct联机。由于同时支持一般Wi-Fi以及Wi-Fi Direct是选择性的功能，因此不一定所有的装置都具备这样的功能。

来源：https://blog.csdn.net/gjsisi/article/details/7774002

wi-fi.org网站的回答：

Can a device simultaneously connect to a regular Wi-Fi network and a group of Wi-Fi Direct-certified devices at the same time?

All devices certified under the Wi-Fi Direct program allow the user to connect to an infrastructure or a Wi-Fi Direct-certified network. Some devices certified under the Wi-Fi Direct program support connections to both an infrastructure network and Wi-Fi Direct-certified group at the same time (e.g. a laptop may support an infrastructure connection while also belonging to a Wi-Fi Direct-certified group). Simultaneous connection to a Wi-Fi Direct-certified group and an infrastructure network is an optional feature.

来源：https://www.wi-fi.org/knowledge-center/ ... a-group-of

而且貌似已经有实现的：

Can WIFI direct and WIFI station work simultaneously? https://stackoverflow.com/questions/155 ... ltaneously

[客服六号]

首先得手机支持才行，手机厂家不支持，没戏。

手机你又不能给人家装个驱动啥的。

[Ollie]

如果09那么大的东西里面能实现WiFi Direct连接电脑和手机，大耳也可以移动了。

耗电比蓝牙多很多吗？蓝牙实现无损传输音频，看不到希望啊。

WiFi Direct: https://baike.baidu.com/item/Wi-Fi%20Direct/6311824

[客服六号]

蓝芽我们在研发新技术了，可以期盼一下。

USB在乐之邦没有自己研发之前，大家都觉得不行，比PCI差远了。

[Ollie]

貌似Android早已支持了

Laptops[edit]
Intel included Wi-Fi Direct on the Centrino 2 platform, in its My WiFi technology by 2008.[13] Wi-Fi Direct devices can connect to a notebook computer that plays the role of a software Access Point (AP). The notebook computer can then provide Internet access to the Wi-Fi Direct-enabled devices without a Wi-Fi AP. Marvell Technology Group,[14] Atheros, Broadcom, Intel, Ralink and Realtek announced their first products in October 2010.[15] Redpine Signals's chipset was Wi-Fi Direct certified in November of the same year.[16]

Mobile devices[edit]

An icon to indicate Wi-Fi Direct operation under Android.
Google announced Wi-Fi Direct support in Android 4.0 in October 2011.[17] While some Android 2.3 devices like Samsung Galaxy S II have had this feature through proprietary operating system extensions developed by OEMs, the Galaxy Nexus (released November 2011) was the first Android device to ship with Google's implementation of this feature and an API for developers.[citation needed] Ozmo Devices, which developed integrated circuits (chips) designed for Wi-Fi Direct, was acquired by Atmel in 2012.[18][19]

Wi-Fi Direct became available with the Blackberry 10.2 upgrade.[20][21]

As of March 2016, no iPhone device implements Wi-Fi Direct; instead, iOS has its own proprietary feature, namely Apple's MultipeerConnectivity.[22] This protocol and others are used in the feature AirDrop, used to transfer large files between Apple devices using a similar (but proprietary) technology to Wi-Fi Direct.

Game consoles[edit]
The Xbox One, released in 2013, supports Wi-Fi Direct.[23]

NVIDIA's SHIELD controller uses Wi-Fi Direct to connect to compatible devices. NVIDIA claims a reduction in latency and increase in throughput over competing Bluetooth controllers.[24]

Televisions[edit]
In March 2016 Sony, LG, Philips and X.VISION have implemented Wi-Fi Direct on some of their televisions.

来源：https://en.wikipedia.org/wiki/Wi-Fi_Direct

[Ollie]

天天期待着呢！

前面重复的贴子，麻烦帮着删掉前面的那个吧。谢六号。

[客服六号]

放着吧，别删了