The wireless world is evolving rapidly in response to the explosion of intelligent devices, applications and data, and the IEEE 802.11ad standard, commonly known as WiGig, is poised to help.
WiGig is a step change from the 802.11 evolution we have witnessed over the last 10 years, adding a new frequency band, 60 GHz, to existing products: 802.11n operates in the 2.4-GHz and 5-GHz bands, while newer 802.11ac products operate in the 5-GHz band.
By enabling the emergence of tri-band products -- such as 802.11n/ac + 802.11ad -- WiGig opens the door to exciting applications and makes it more possible for all intelligent devices to be connected through a high speed Wi-Fi network.
But, we get ahead of ourselves. First, let’s see what WiGig is all about.
Speed.The WiGig spec is defined to support speeds up to 7Gbps, but this is really just a start. By using some of the basic techniques we see today in .11n and .11ac, up to 100Gbps is achievable within the next few years. How?
- While .11ac can go up to 8x8 MIMO, 256 QAM modulation and channel bond four 40 MHz channels, .11ad is able to achieve the same speeds with one spatial stream, 64 QAM modulation and a single channel.
- Using all of the techniques that 802.11 has used in the last decade to achieve higher performance in the legacy bands (channel bonding and MIMO and higher modulation), the Wi-Fi industry can easily achieve much faster speeds.
- 使用行业类比 - 60 GHz技术今天是技术演变的“.11b阶段”。我们只是在令人兴奋的技术路线图进展的开始，将使用经过验证的技术以及尚未被发现的新技术将Wigig带到新的高度。
High capacity.16-32天线元素阵列产生真正的空间分离，使高容量无线部署成为现实。
- Approximately the same area of a single 2.4 GHz antenna module can contain 32 or more 60GHz antennas.
- 波束成形与这种大天线阵列允许高度指示通信，允许多个设备在同一室中并排工作，对它们周围的装置效果最小。
- Interference-free transmissions allow for capacity to be additive. In most omni-directional radio technologies, the overall bandwidth is divided by the number of users, which is dilutive rather than additive.
Most power efficient Wi-Fi technology yet.Running multiple gigabits per second of real throughput at only hundreds of milliwatts total system power is achievable with 802.11ad, making it far and away the most power efficient technology in the Wi-Fi portfolio.
- 起权力分割不同的感情n 60GHz radios and traditional Wi-Fi products in legacy bands.
- Receiver data processing is biggest energy consumer, rather than transmit power amplifiers.
- 完整的系统，产生20+ DBM有效的各向同性辐射功率（EIRP）和维持4Gbps链路，可以以0.5 W（1/2瓦）构建，对准电话/平板电脑集成。
Great free space rate/range.通过天线增益和宽通道偏移的路径损耗使得即使在低信噪比（SNR）情况下也能实现高速。100英尺的2Gbps是“简单”。
- 60GHz最大的误解之一是它是短的范围。
- 60 GHz没有范围问题。事实上，在自由空间的视线中，60GHz拥有任何Wi-Fi技术的最佳速率/范围。
- 但是60GHz确实有封锁问题。它不会经历大多数墙壁或通过人。相反，它反映了。因此，虽然60GHz具有最佳速率/范围，但它通常必须使用此范围来查找反射路径才能实现其目标。
Coverage.When discussing WiGig performance, we need some new terminology. Standard rate/range graphs have become familiar but do not apply here.
- One can be 100 feet away and get 2Gbps or, due to blockage and required reflections, one can be 10 feet away but only get 1Gbps.
- For WiGig, we talk about coverage. In a typical room, what percent of the time can I achieve a specific rate – for example, in a conference room, 65% of the locations can achieve 4Gbps, 80% can achieve 2Gbps, and 95% can achieve 1Gbps.
Very low latency.大约〜10微秒（美国）往返是真实的，与线延迟相当。
- WiGig was designed from the ground up to be extremely low latency – ~10 us round trip – comparable to wired-equivalent latencies. This is important, because now the latencies are close enough that you can trick the system that it is running over a wire. And if the system thinks there is a wire, you can reuse all of the software that has been developed for that environment.
For example, WiGig Wireless Bus Extension (WBE) is able to run the PCIe bus over the air, and therefore, seamlessly reuse the last decade’s worth of host controllers and device drivers that have already been developed.
总之，Wigig提供了无与伦比的原始速度，干扰电阻，良好的范围，高容量网络，在手持式电源信封中的多千兆位实际吞吐量，以及近导线等效延迟。鉴于这些优势，Wigig非常适合广泛的应用，从三频段网络（2.4 / 5/60 GHz）到无线存储和边缘缓存到无线对接。整合Wigig的产品目前可在市场上提供，包括多个Ultrabook Skus和无线扩展坞，更多的产品在地平线上。
Wilocityis the leading developer of 60 GHz multi-gigabit wireless chipsets, allowing revolutionary performance and capacity by enabling a tenfold increase compared to legacy Wi-Fi. The company is committed to making wireless the ubiquitous connectivity solution for mobile platforms everywhere – where wireless is simply faster and easier than wires – in the office, at home, and on the road. Wilocity has partnered with industry leaders to provide greater wireless performance in short-range wireless networking, docking, point-to-point outdoor links, and more.