WiFi 6已成为新流行语！除了知道它是 802.11ax 规范之后的第六代WiFi，我们对这项技术知之甚少。那么，这项技术对我们有什么意义，它与以前的迭代有何不同。这些是我们将在今天的帖子中尝试回答的一些问题！
什么是 Wi-Fi 6
Wi-Fi 6是由(Wi-Fi 6)Wi-Fi Alliance制定的新标签公约， Wi-Fi Alliance是一个推广(Alliance)Wi-Fi技术并认证Wi-Fi产品符合某些互操作性标准的非营利组织。新标签被认为是我们使用了十多年的Wi-Fi技术的更快版本。(Wi-Fi)
该组织提出了该约定，因为较早的名称难以回忆（真实名称为 802.11ax）。当前使用的Wi-Fi 802.11ac 也称为Wi-Fi 5，支持高达 3.5 Gbps的速度。Wi-Fi 6 将支持 9.6 Gbps ，是使用(Gbps)Wi-Fi 5获得的 3.5 Gbps的两倍多。
话虽如此，让我们进一步探索：
- Wi-Fi 4、Wi-Fi 5和Wi-Fi 6技术的区别
- 为什么我们需要 Wi-Fi 6
- Wi-Fi 6 技术的主要优势
- Wi-Fi 6 技术将如何运作？
1] Wi-Fi 4(Wi-Fi 4)、Wi-Fi 5 和 Wi-Fi 6 技术之间的差异。
| WiFi 4 | WiFi 5 | WiFi 6 |
| identifies devices that support 802.11n technology | identifies devices that support 802.11ac technology | identifies devices that support 802.11ax technology |
| This standard support speeds up to 600Mbps | This standard supports data rates up to 3.46Gbps. | support 9.6 Gbps, (Almost double the 3.5 Gbps you get with Wi-Fi 5 |
| Operates between two frequencies – 2.4GHz and 5GHz, | Operate in the 5 GHz frequency space | While still operating in the 2.4GHz and 5GHz spectrum this standard aims to improve the performance in WLAN deployments in dense scenarios, such as sports stadiums, airports, etc. |
| WiFi 4 has a modulation of just 64-QAM | In modulation mode, WiFi is 5-256-QAM | WiFi-6 has a modulation mode of1024-QAM |
2] 为什么选择 Wi-Fi 6
Wi-Fi的普遍性及其与人工智能(Artificial Intelligence)等其他无线技术相辅相成的能力正在慢慢将连接每个人和一切的愿景变为现实。同时，Wi-Fi 的普及创造了Wi-Fi非常(Wi-Fi)多样化和人口密集的条件。这就需要新的技术进步来满足用户的需求。Wi-Fi 6 相信，它可以解决这个问题，因为它将拥有使Wi-Fi设备能够在最密集和动态的连接设置中高效运行的能力。
除了强大的连接性和速度之外，用户还需要在最苛刻的 Wi-Fi 环境中保持稳定的性能。Wi-Fi 6 承诺提供这一点以及其他好处。
阅读(Read)： 什么是 Wi-Fi 6E(What is Wi-Fi 6E)？
3] Wi-Fi 6技术的主要(Key)优势
- 在连接了许多设备的环境中具有高性能。
- 增加容量
- 更高的数据传输率
- 提高电源效率
除上述内容外，通过该技术（即Wi-Fi CERTIFIED 6设备）认证的设备将满足最高的安全性和互操作性标准。此外，它们还将降低电池消耗，使其成为物联网(Internet)( IoT ) 和新兴应用的首选，例如，(Things)
Wi-Fi 6之所以被认为是物联网(Things)发展(Internet)的闲置选择，是因为它支持TWT（Target Wakeup Time）技术。该技术使设备能够确定允许它们发送或接收数据的次数，从而允许 802.11ax ( WiFi 6 ) 接入点有效地增加设备睡眠时间并显着延长电池寿命。这个想法仍然是物联网(IoT)发展的核心特征。除此之外，目标唤醒时间(Target Wake Time)使无线接入点和设备能够协商和定义访问媒体的特定时间。这通过流形优化了频谱效率，并减少了用户之间的争用和重叠。
4] Wi-Fi 6 技术如何工作？
Wi-Fi 6 主要使用了两种技术——MU-MIMO和OFDMA。
- MU-MIMO——代表“多用户、多输入、多输出”。它由路由器和端点设备支持。该技术用于增加无线路由器上用于接收和发送的天线数量，从而提高无线连接的容量。
- OFDMA – 它代表“正交频分多址”，顾名思义，该技术允许单个 AP 同时连接到具有不同带宽要求的多个客户端。
我们已经体验到对增加容量和吞吐速度的需求。这将继续进一步增长，因为用户将不断向每个网络添加更多无线设备，并期望他们的活动（流式传输喜爱的视频或下载大文件）的响应时间更快。因此，转向有望满足所有需求的WiFi 6或 802.11ax 技术我们的要求似乎是最可行的选择。
What is Wi-Fi 6? All you need to know about it!
WiFi 6 has become a new buzzword! Apart from knowing that it is the sixth generation of WiFi behind the 802.11ax specification, we have little idea about this technology. So, wha,t this technology holds for us and how is it different from its previous iterations. These are some of the questions we will attempt to answer in today’s post!
What is Wi-Fi 6
Wi-Fi 6 is a new labeling convention developed by Wi-Fi Alliance, which is a non-profit organization that promotes Wi-Fi technology and certifies Wi-Fi products in compliance with certain standards of interoperability. The new labeling is considered as the faster version of Wi-Fi technology we have been using for more than a decade now.
The organization came up with the convention since the earlier names were difficult to recall (real name being 802.11ax). The Wi-Fi currently in use, 802.11ac, is also known as Wi-Fi 5 and supports a speed of up to 3.5 Gbps. Wi-Fi 6 will support 9.6 Gbps, more than double the 3.5 Gbps you get with Wi-Fi 5.
Having said that, let us further explore:
- Differences between Wi-Fi 4, Wi-Fi 5 and Wi-Fi 6 technology
- Why do we need Wi-Fi 6
- Key benefits of Wi-Fi 6 technology
- How Wi-Fi 6 technology will work?
1] Differences between Wi-Fi 4, Wi-Fi 5 and Wi-Fi 6 technology.
| WiFi 4 | WiFi 5 | WiFi 6 |
| identifies devices that support 802.11n technology | identifies devices that support 802.11ac technology | identifies devices that support 802.11ax technology |
| This standard support speeds up to 600Mbps | This standard supports data rates up to 3.46Gbps. | support 9.6 Gbps, (Almost double the 3.5 Gbps you get with Wi-Fi 5 |
| Operates between two frequencies – 2.4GHz and 5GHz, | Operate in the 5 GHz frequency space | While still operating in the 2.4GHz and 5GHz spectrum this standard aims to improve the performance in WLAN deployments in dense scenarios, such as sports stadiums, airports, etc. |
| WiFi 4 has a modulation of just 64-QAM | In modulation mode, WiFi is 5-256-QAM | WiFi-6 has a modulation mode of1024-QAM |
2] Why Wi-Fi 6
The ubiquity of Wi-Fi and its ability to complement other wireless technologies like Artificial Intelligence is slowly translating the vision of connecting everyone and everything into reality. At the same time, the popularity of Wi-Fi has created very diverse and densely populated Wi-Fi conditions. This calls for new technological advances to meet the needs of users. Wi-Fi 6 believes, it has answers to this as it will possess the capability to enable Wi-Fi devices to operate efficiently in the most dense and dynamic connectivity settings.
Apart from robust connectivity and speed, users demand stable performance in most demanding Wi-Fi environments. Wi-Fi 6 promises to deliver this, alongside other benefits.
Read: What is Wi-Fi 6E?
3] Key benefits of Wi-Fi 6 technology
- High performance in environments having many devices connected.
- Increased capacity
- Higher data transfer rates
- Improved power efficiency
In addition to the above, devices certified by this technology a.k.a. Wi-Fi CERTIFIED 6 devices will meet the highest standards for security and interoperability. Besides, they’ll also enable lower battery consumption, making it a preferred choice for the Internet of Things (IoT) and emerging applications like,
- Virtual and augmented reality used in e-Learning
- Healthcare
- Telepresence
The reason why Wi-Fi 6 is considered as the idle choice for the development of the Internet of Things is that it supports the TWT (Target Wakeup Time) technology. The technology enables devices to determine the number of times they can be allowed to send or receive data which in turn allows 802.11ax (WiFi 6) access points to effectively increase device sleep time and significantly conserve battery life. This idea remains a core feature in the development of IoT. In addition to this, Target Wake Time enables wireless access points and devices to negotiate and define specific times to access the medium. This optimizes spectral efficiency by manifolds and reduces contention and overlap between users.
4] How Wi-Fi 6 technology works?
Wi-Fi 6 mainly uses two technologies – MU-MIMO and OFDMA.
- MU-MIMO – stands for ‘multi-user, multiple-input, multiple-output’. It is supported by routers and endpoint devices. The technology is used to increase the number of antennas on a wireless router that is used for both receiving and transmitting, improving capacity for wireless connections.
- OFDMA – It stands for ‘orthogonal frequency division multiple access’ and as the name suggests, the technology allows single AP connect simultaneously to multiple clients with varying bandwidth requirements.
Already, we are experiencing a demand for increased capacity and throughput speeds. This will continue to grow further as users will keep adding more wireless devices to each network and expect faster response times for their activities (streaming favorite videos or downloading large files) As such, moving to WiFi 6 or 802.11ax technology that promises to meet all our demands will seem as the most viable option.
